From 0f6f2525f7b19c7de18bafe464b5ced1c714430a Mon Sep 17 00:00:00 2001 From: Gloria Wang Date: Thu, 4 Feb 2010 13:58:20 -0800 Subject: Replace Tremor with Tremolo (an ARM optimised version of the Tremor library for doing Ogg Vorbis decompression) --- Android.mk | 36 + MODULE_LICENSE_BSD_LIKE | 0 NOTICE | 372 +++++++++ README | 114 +++ Tremolo/asm_arm.h | 245 ++++++ Tremolo/bitwise.c | 849 +++++++++++++++++++ Tremolo/bitwiseARM.s | 368 ++++++++ Tremolo/codebook.c | 874 +++++++++++++++++++ Tremolo/codebook.h | 69 ++ Tremolo/codec_internal.h | 215 +++++ Tremolo/config_types.h | 26 + Tremolo/dpen.s | 459 ++++++++++ Tremolo/dsp.c | 306 +++++++ Tremolo/floor0.c | 428 ++++++++++ Tremolo/floor1.c | 386 +++++++++ Tremolo/floor1ARM.s | 36 + Tremolo/floor1LARM.s | 35 + Tremolo/floor_lookup.c | 92 ++ Tremolo/framing.c | 1149 +++++++++++++++++++++++++ Tremolo/ivorbiscodec.h | 104 +++ Tremolo/ivorbisfile.h | 122 +++ Tremolo/lsp_lookup.h | 108 +++ Tremolo/mapping0.c | 241 ++++++ Tremolo/mdct.c | 562 +++++++++++++ Tremolo/mdct.h | 59 ++ Tremolo/mdctARM.s | 1187 ++++++++++++++++++++++++++ Tremolo/mdctLARM.s | 1175 ++++++++++++++++++++++++++ Tremolo/mdct_lookup.h | 539 ++++++++++++ Tremolo/misc.c | 208 +++++ Tremolo/misc.h | 192 +++++ Tremolo/ogg.h | 223 +++++ Tremolo/os.h | 62 ++ Tremolo/os_types.h | 104 +++ Tremolo/res012.c | 224 +++++ Tremolo/treminfo.c | 348 ++++++++ Tremolo/vorbisfile.c | 1592 +++++++++++++++++++++++++++++++++++ Tremolo/window_lookup.h | 2087 ++++++++++++++++++++++++++++++++++++++++++++++ 37 files changed, 15196 insertions(+) create mode 100644 Android.mk create mode 100644 MODULE_LICENSE_BSD_LIKE create mode 100644 NOTICE create mode 100644 README create mode 100644 Tremolo/asm_arm.h create mode 100644 Tremolo/bitwise.c create mode 100644 Tremolo/bitwiseARM.s create mode 100644 Tremolo/codebook.c create mode 100644 Tremolo/codebook.h create mode 100644 Tremolo/codec_internal.h create mode 100644 Tremolo/config_types.h create mode 100644 Tremolo/dpen.s create mode 100644 Tremolo/dsp.c create mode 100644 Tremolo/floor0.c create mode 100644 Tremolo/floor1.c create mode 100644 Tremolo/floor1ARM.s create mode 100644 Tremolo/floor1LARM.s create mode 100644 Tremolo/floor_lookup.c create mode 100644 Tremolo/framing.c create mode 100644 Tremolo/ivorbiscodec.h create mode 100644 Tremolo/ivorbisfile.h create mode 100644 Tremolo/lsp_lookup.h create mode 100644 Tremolo/mapping0.c create mode 100644 Tremolo/mdct.c create mode 100644 Tremolo/mdct.h create mode 100644 Tremolo/mdctARM.s create mode 100644 Tremolo/mdctLARM.s create mode 100644 Tremolo/mdct_lookup.h create mode 100644 Tremolo/misc.c create mode 100644 Tremolo/misc.h create mode 100644 Tremolo/ogg.h create mode 100644 Tremolo/os.h create mode 100644 Tremolo/os_types.h create mode 100644 Tremolo/res012.c create mode 100644 Tremolo/treminfo.c create mode 100644 Tremolo/vorbisfile.c create mode 100644 Tremolo/window_lookup.h diff --git a/Android.mk b/Android.mk new file mode 100644 index 0000000..637b949 --- /dev/null +++ b/Android.mk @@ -0,0 +1,36 @@ +LOCAL_PATH := $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES = \ + Tremolo/bitwise.c \ + Tremolo/codebook.c \ + Tremolo/dsp.c \ + Tremolo/floor0.c \ + Tremolo/floor1.c \ + Tremolo/floor_lookup.c \ + Tremolo/framing.c \ + Tremolo/mapping0.c \ + Tremolo/mdct.c \ + Tremolo/misc.c \ + Tremolo/res012.c \ + Tremolo/treminfo.c \ + Tremolo/vorbisfile.c \ + Tremolo/bitwiseARM.s \ + Tremolo/dpen.s \ + Tremolo/floor1ARM.s \ + Tremolo/mdctARM.s + +LOCAL_CFLAGS+= -O2 + +ifeq ($(TARGET_ARCH),arm) +LOCAL_CFLAGS+= -D_ARM_ASSEM_ +endif + +LOCAL_C_INCLUDES:= \ + $(LOCAL_PATH)/Tremolo + +LOCAL_ARM_MODE := arm + +LOCAL_MODULE := libvorbisidec + +include $(BUILD_SHARED_LIBRARY) diff --git a/MODULE_LICENSE_BSD_LIKE b/MODULE_LICENSE_BSD_LIKE new file mode 100644 index 0000000..e69de29 diff --git a/NOTICE b/NOTICE new file mode 100644 index 0000000..4a470cf --- /dev/null +++ b/NOTICE @@ -0,0 +1,372 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. + +--------------------------------------------------------------------- +Original COPYING file from Tremor distribution + +Copyright (c) 2002, Xiph.org Foundation + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +- Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +- Neither the name of the Xiph.org Foundation nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/README b/README new file mode 100644 index 0000000..3f94094 --- /dev/null +++ b/README @@ -0,0 +1,114 @@ +This version of Tremolo is derived from Tremolo library version +0.07. It has been patched against publicly known vulnerabilities +with sample files available here: + + http://static.dataspill.org/releases/ogg/examples/ + +When syncing with svn, please ensure that these defects are not +reintroduced. + +--------------------------------------------------------------------------- + +This README covers the Tremolo library, version 0.07. + +Tremolo is a modified version of the Ogg Vorbis 'Tremor' integer +playback codec, branching from 1.0.2 of the low memory branch of +that source from svn. + +Tremolo is released under different licenses to Tremor. + +Tremor is released under a BSD like license (see the original README +included below, and other documentation for an exact statement of +its licensing terms). + +Tremolo is released under twin licenses. + +Firstly it is released under the GPL (v2) - this is so that fully +GPLd software such as ScummVM may use it with no problems. + +Secondly it is released under a homebrew license of my own. If you +want to use Tremolo in free(*) software, you may do so without +charge. If you want to use Tremolo in non-free(*) software then +you must contact me and come to an agreement first. + +* Free software, for the purposes of this definition is defined to +be software that is given away for free to anyone, with no more than +a nominal charge for media permitted. + +Software that comes bundled with hardware, or is tied to specific +hardware is NOT free. + +Software given away only on magazine discs, or only to subscribers +for another service is NOT free (though software which is given away +to everyone clearly may be included on magazine discs or given to +subscribers). + +Shareware is NOT free, but reasonably priced shareware will generally +get permission to use it as it it was free by contacting me first. + +If in doubt about whether your software counts as 'free' or not, +contact me. (In fact, contact me if you use the software in anything, +it'd be nice to know!) + +I am not looking to make my fortune with this, but if (say) Apple +wanted to put it in the firmware for an iPod, it'd be nice to get +something for my efforts. + +I Am Not A Lawyer, so all this is probably horribly unclear. If +anyone wants to hire me a lawyer for the afternoon, we can formalise +it. + +Robin Watts + +tremolo@wss.co.uk + +---------------------------------------------------------------------- + + + +This README covers the Ogg Vorbis 'Tremor' integer playback codec +source as of date 2002 09 02, version 1.0.0. + + ****** + +The C source in this package will build on any ANSI C compiler and +function completely and properly on any platform. The included build +system assumes GNU build system and make tools (m4, automake, +autoconf, libtool and gmake). GCC is not required, although GCC is +the most tested compiler. To build using GNU tools, type in the +source directory: + +./autogen.sh +make + +Currently, the source implements playback in pure C on all platforms +except ARM, where a [currently] small amount of assembly (see +asm_arm.h) is used to implement 64 bit math operations and fast LSP +computation. If building on ARM without the benefit of GNU build +system tools, be sure that '_ARM_ASSEM_' is #defined by the build +system if this assembly is desired, else the resulting library will +use whatever 64 bit math builtins the compiler implements. + +No math library is required by this source. No floating point +operations are used at any point in either setup or decode. This +decoder library will properly decode any past, current or future +Vorbis I file or stream. + + ******** + +The build system produces a static and [when supported by the OS] +dynamic library named 'libvorbisidec'. This library exposes an API +nearly identical to the BSD reference library's 'libvorbisfile', +including all the features familiar to users of vorbisfile. This API +is similar enough that the proper header file to include is named +'ivorbisfile.h' [included in the source build directory]. Lower level +libvorbis-style headers and structures are in 'ivorbiscodec.h' +[included in the source build directory]. A simple example program, +ivorbisfile_example.c, can be built with 'make example'. + + ******** + +Detailed Tremor API Documentation begins at doc/index.html + +Monty +xiph.org diff --git a/Tremolo/asm_arm.h b/Tremolo/asm_arm.h new file mode 100644 index 0000000..4a61eff --- /dev/null +++ b/Tremolo/asm_arm.h @@ -0,0 +1,245 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: arm7 and later wide math functions + + ********************************************************************/ + +#ifdef _ARM_ASSEM_ + +#if !defined(_V_WIDE_MATH) && !defined(_LOW_ACCURACY_) +#define _V_WIDE_MATH + +static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + int lo,hi; + asm volatile("smull\t%0, %1, %2, %3" + : "=&r"(lo),"=&r"(hi) + : "%r"(x),"r"(y) + : "cc"); + return(hi); +} + +static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return MULT32(x,y)<<1; +} + +static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + int lo,hi; + asm volatile("smull %0, %1, %2, %3\n\t" + "movs %0, %0, lsr #15\n\t" + "adc %1, %0, %1, lsl #17\n\t" + : "=&r"(lo),"=&r"(hi) + : "%r"(x),"r"(y) + : "cc"); + return(hi); +} + +#define MB() asm volatile ("" : : : "memory") + +static inline void XPROD32(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "smull %0, %1, %4, %6\n\t" + "smlal %0, %1, %5, %7\n\t" + "rsb %3, %4, #0\n\t" + "smull %0, %2, %5, %6\n\t" + "smlal %0, %2, %3, %7" + : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) + : "3" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1; + MB(); + *y = y1; +} + +/* x = (a*t + b*v)>>31, y = (b*t - a*v)>>31 */ +static inline void XPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "smull %0, %1, %4, %6\n\t" + "smlal %0, %1, %5, %7\n\t" + "rsb %3, %4, #0\n\t" + "smull %0, %2, %5, %6\n\t" + "smlal %0, %2, %3, %7" + : "=&r" (l), "=&r" (x1), "=&r" (y1), "=r" (a) + : "3" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1 << 1; + MB(); + *y = y1 << 1; +} + +/* x = (a*t - b*v)>>31, y = (b*t + a*v)>>31 */ +static inline void XNPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + int x1, y1, l; + asm( "rsb %2, %4, #0\n\t" + "smull %0, %1, %3, %5\n\t" + "smlal %0, %1, %2, %6\n\t" + "smull %0, %2, %4, %5\n\t" + "smlal %0, %2, %3, %6" + : "=&r" (l), "=&r" (x1), "=&r" (y1) + : "r" (a), "r" (b), "r" (t), "r" (v) + : "cc" ); + *x = x1 << 1; + MB(); + *y = y1 << 1; +} + +#endif + +#ifndef _V_CLIP_MATH +#define _V_CLIP_MATH + +static inline ogg_int32_t CLIP_TO_15(ogg_int32_t x) { + int tmp; + asm volatile("subs %1, %0, #32768\n\t" + "movpl %0, #0x7f00\n\t" + "orrpl %0, %0, #0xff\n" + "adds %1, %0, #32768\n\t" + "movmi %0, #0x8000" + : "+r"(x),"=r"(tmp) + : + : "cc"); + return(x); +} + +#endif + +#ifndef _V_LSP_MATH_ASM +#define _V_LSP_MATH_ASM + +static inline void lsp_loop_asm(ogg_uint32_t *qip,ogg_uint32_t *pip, + ogg_int32_t *qexpp, + ogg_int32_t *ilsp,ogg_int32_t wi, + ogg_int32_t m){ + + ogg_uint32_t qi=*qip,pi=*pip; + ogg_int32_t qexp=*qexpp; + + asm("mov r0,%3;" + "mov r1,%5,asr#1;" + "add r0,r0,r1,lsl#3;" + "1:" + + "ldmdb r0!,{r1,r3};" + "subs r1,r1,%4;" //ilsp[j]-wi + "rsbmi r1,r1,#0;" //labs(ilsp[j]-wi) + "umull %0,r2,r1,%0;" //qi*=labs(ilsp[j]-wi) + + "subs r1,r3,%4;" //ilsp[j+1]-wi + "rsbmi r1,r1,#0;" //labs(ilsp[j+1]-wi) + "umull %1,r3,r1,%1;" //pi*=labs(ilsp[j+1]-wi) + + "cmn r2,r3;" // shift down 16? + "beq 0f;" + "add %2,%2,#16;" + "mov %0,%0,lsr #16;" + "orr %0,%0,r2,lsl #16;" + "mov %1,%1,lsr #16;" + "orr %1,%1,r3,lsl #16;" + "0:" + "cmp r0,%3;\n" + "bhi 1b;\n" + + // odd filter assymetry + "ands r0,%5,#1;\n" + "beq 2f;\n" + "add r0,%3,%5,lsl#2;\n" + + "ldr r1,[r0,#-4];\n" + "mov r0,#0x4000;\n" + + "subs r1,r1,%4;\n" //ilsp[j]-wi + "rsbmi r1,r1,#0;\n" //labs(ilsp[j]-wi) + "umull %0,r2,r1,%0;\n" //qi*=labs(ilsp[j]-wi) + "umull %1,r3,r0,%1;\n" //pi*=labs(ilsp[j+1]-wi) + + "cmn r2,r3;\n" // shift down 16? + "beq 2f;\n" + "add %2,%2,#16;\n" + "mov %0,%0,lsr #16;\n" + "orr %0,%0,r2,lsl #16;\n" + "mov %1,%1,lsr #16;\n" + "orr %1,%1,r3,lsl #16;\n" + + //qi=(pi>>shift)*labs(ilsp[j]-wi); + //pi=(qi>>shift)*labs(ilsp[j+1]-wi); + //qexp+=shift; + + //} + + /* normalize to max 16 sig figs */ + "2:" + "mov r2,#0;" + "orr r1,%0,%1;" + "tst r1,#0xff000000;" + "addne r2,r2,#8;" + "movne r1,r1,lsr #8;" + "tst r1,#0x00f00000;" + "addne r2,r2,#4;" + "movne r1,r1,lsr #4;" + "tst r1,#0x000c0000;" + "addne r2,r2,#2;" + "movne r1,r1,lsr #2;" + "tst r1,#0x00020000;" + "addne r2,r2,#1;" + "movne r1,r1,lsr #1;" + "tst r1,#0x00010000;" + "addne r2,r2,#1;" + "mov %0,%0,lsr r2;" + "mov %1,%1,lsr r2;" + "add %2,%2,r2;" + + : "+r"(qi),"+r"(pi),"+r"(qexp) + : "r"(ilsp),"r"(wi),"r"(m) + : "r0","r1","r2","r3","cc"); + + *qip=qi; + *pip=pi; + *qexpp=qexp; +} + +static inline void lsp_norm_asm(ogg_uint32_t *qip,ogg_int32_t *qexpp){ + + ogg_uint32_t qi=*qip; + ogg_int32_t qexp=*qexpp; + + asm("tst %0,#0x0000ff00;" + "moveq %0,%0,lsl #8;" + "subeq %1,%1,#8;" + "tst %0,#0x0000f000;" + "moveq %0,%0,lsl #4;" + "subeq %1,%1,#4;" + "tst %0,#0x0000c000;" + "moveq %0,%0,lsl #2;" + "subeq %1,%1,#2;" + "tst %0,#0x00008000;" + "moveq %0,%0,lsl #1;" + "subeq %1,%1,#1;" + : "+r"(qi),"+r"(qexp) + : + : "cc"); + *qip=qi; + *qexpp=qexp; +} + +#endif +#endif + diff --git a/Tremolo/bitwise.c b/Tremolo/bitwise.c new file mode 100644 index 0000000..bcdf153 --- /dev/null +++ b/Tremolo/bitwise.c @@ -0,0 +1,849 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: packing variable sized words into an octet stream + + ********************************************************************/ + +/* We're 'LSb' endian; if we write a word but read individual bits, + then we'll read the lsb first */ + +#include +#include +#include "misc.h" +#include "ogg.h" + +#include + + +#if !defined(ARM_LITTLE_ENDIAN) || defined(_V_BIT_TEST) +static unsigned long mask[]= +{0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f, + 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff, + 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff, + 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff, + 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff, + 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff, + 0x3fffffff,0x7fffffff,0xffffffff }; +#endif + +#ifdef ARM_LITTLE_ENDIAN + +#ifdef DEBUGGING_BITWISE +extern void oggpack_readinitARM(oggpack_buffer *b,ogg_reference *r); + +void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ + oggpack_readinitARM(b,r); + //fprintf(stderr, "Init: buffer=(%d,%x,%d,%d) %08x%08x\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, + // b->ptr[1], b->ptr[0]); + //fflush(stderr); +} + +extern long oggpack_lookARM(oggpack_buffer *b,int bits); + +long oggpack_look(oggpack_buffer *b,int bits){ + long l; + + //fprintf(stderr, "PreLook: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, + // b->ptr[1], b->ptr[0], bits); + //fflush(stderr); + l = oggpack_lookARM(b,bits); + //fprintf(stderr, "Look: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, + // b->ptr[1], b->ptr[0], bits, l); + //fflush(stderr); + + return l; +} + +extern void oggpack_advARM(oggpack_buffer *b,int bits); + +void oggpack_adv(oggpack_buffer *b,int bits){ + //fprintf(stderr, "Adv before: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, + // b->ptr[1], b->ptr[0],bits); + //fflush(stderr); + oggpack_advARM(b,bits); + //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %08x%08x\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, + // b->ptr[1], b->ptr[0]); + //fflush(stderr); +} + +extern long oggpack_readARM(oggpack_buffer *b,int bits); + +/* bits <= 32 */ +long oggpack_read(oggpack_buffer *b,int bits){ + long l; + + //fprintf(stderr, "PreRead: buffer=(%d,%x,%d,%d) %08x%08x (%d bits)\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, + // b->ptr[1], b->ptr[0], bits); + //fflush(stderr); + l = oggpack_readARM(b,bits); + //fprintf(stderr, "Read: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", + // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, + // b->ptr[1], b->ptr[0], bits, l); + //fflush(stderr); + + return l; +} +#endif + +int oggpack_eop(oggpack_buffer *b){ + int ret; + if(b->bitsLeftInSegment<0)ret= -1; + else ret = 0; + //fprintf(stderr, "EOP %d\n", ret); + //fflush(stderr); + return ret; +} + +long oggpack_bytes(oggpack_buffer *b){ + long ret; + if(b->bitsLeftInSegment<0) ret = b->count+b->head->length; + else ret = b->count + b->head->length - (b->bitsLeftInSegment)/8; + //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", + // b->count, b->head->length, b->bitsLeftInSegment); + //fflush(stderr); + return ret; +} + +long oggpack_bits(oggpack_buffer *b){ + long ret; + if(b->bitsLeftInSegment<0) ret=(b->count+b->head->length)*8; + else ret = b->count*8 + b->head->length*8 - b->bitsLeftInSegment; + //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", + // b->count, b->head->length, b->bitsLeftInSegment); + //fflush(stderr); + return ret; +} + +#else + +/* spans forward, skipping as many bytes as headend is negative; if + headend is zero, simply finds next byte. If we're up to the end + of the buffer, leaves headend at zero. If we've read past the end, + halt the decode process. */ + +static void _span(oggpack_buffer *b){ + while(b->headend-(b->headbit>>3)<1){ + b->headend-=b->headbit>>3; + b->headbit&=0x7; + + if(b->head && b->head->next){ + b->count+=b->head->length; + b->head=b->head->next; + + if(b->headend+b->head->length>0) + b->headptr=b->head->buffer->data+b->head->begin-b->headend; + + b->headend+=b->head->length; + }else{ + /* we've either met the end of decode, or gone past it. halt + only if we're past */ + if(b->headend*8headbit) + /* read has fallen off the end */ + b->headend=-1; + break; + } + } +} + +void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ + memset(b,0,sizeof(*b)); + + b->tail=b->head=r; + b->count=0; + if (b->head) { + b->headptr=b->head->buffer->data+b->head->begin; + b->headend=b->head->length; + } else { + b->headptr=0; + b->headend=0; + } + _span(b); + + //fprintf(stderr, + // "Init: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x\n", + // b->headbit, b->headptr, b->headend, b->count, + // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], + // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0]); + //fflush(stderr); +} + +#define _lookspan() while(!end){\ + head=head->next;\ + if(!head) return -1;\ + ptr=head->buffer->data + head->begin;\ + end=head->length;\ + } + +/* Read in bits without advancing the bitptr; bits <= 32 */ +long oggpack_look(oggpack_buffer *b,int bits){ + unsigned long m=mask[bits]; + unsigned long ret; + int BITS = bits; + + bits+=b->headbit; + + if(bits >= b->headend<<3){ + int end=b->headend; + unsigned char *ptr=b->headptr; + ogg_reference *head=b->head; + + if(end<0)return -1; + if (!head || !end)return -1; + + if(bits){ + _lookspan(); + ret=*ptr++>>b->headbit; + if(bits>8){ + --end; + _lookspan(); + ret|=*ptr++<<(8-b->headbit); + if(bits>16){ + --end; + _lookspan(); + ret|=*ptr++<<(16-b->headbit); + if(bits>24){ + --end; + _lookspan(); + ret|=*ptr++<<(24-b->headbit); + if(bits>32 && b->headbit){ + --end; + _lookspan(); + ret|=*ptr<<(32-b->headbit); + } + } + } + } + } + + }else{ + + /* make this a switch jump-table */ + ret=b->headptr[0]>>b->headbit; + if(bits>8){ + ret|=b->headptr[1]<<(8-b->headbit); + if(bits>16){ + ret|=b->headptr[2]<<(16-b->headbit); + if(bits>24){ + ret|=b->headptr[3]<<(24-b->headbit); + if(bits>32 && b->headbit) + ret|=b->headptr[4]<<(32-b->headbit); + } + } + } + } + + ret&=m; + //fprintf(stderr, + // "Look: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits) return=%x\n", + // b->headbit, b->headptr, b->headend, b->count, + // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], + // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], + // BITS, ret); + //fflush(stderr); + return ret; +} + +/* limited to 32 at a time */ +void oggpack_adv(oggpack_buffer *b,int bits){ + int BITS=bits; + bits+=b->headbit; + b->headbit=bits&7; + b->headend-=(bits>>3); + b->headptr+=(bits>>3); + if(b->headend<1)_span(b); + //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", + // b->headbit, b->headptr, b->headend,b->count, + // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], + // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], + // BITS); + //fflush(stderr); +} + +int oggpack_eop(oggpack_buffer *b){ + int ret; + if(b->headend<0)ret= -1; + else ret = 0; + //fprintf(stderr, "EOP %d\n", ret); + //fflush(stderr); + return ret; +} + +long oggpack_bytes(oggpack_buffer *b){ + long ret; + if(b->headend<0) ret = b->count+b->head->length; + ret = b->count + b->head->length-b->headend + (b->headbit+7)/8; + //fprintf(stderr, "Bytes: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bytes)\n", + // b->headbit, b->headptr, b->headend, b->count, + // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], + // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], + // ret); + //fflush(stderr); + return ret; +} + +long oggpack_bits(oggpack_buffer *b){ + long ret; + if(b->headend<0) ret = (b->count+b->head->length)*8; + else ret = (b->count + b->head->length-b->headend)*8 + b->headbit; + //fprintf(stderr, "Bits: buffer=(%x,%x,%x) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", + // b->headbit, b->headptr, b->headend, + // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], + // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], + // ret); + //fflush(stderr); + return ret; +} + +/* bits <= 32 */ +long oggpack_read(oggpack_buffer *b,int bits){ + long ret=oggpack_look(b,bits); + oggpack_adv(b,bits); + return(ret); +} + +#endif + +/* Self test of the bitwise routines; everything else is based on + them, so they damned well better be solid. */ + +#ifdef _V_BIT_TEST +#include +#include +#include +#include "framing.c" + +static int ilog(unsigned long v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +oggpack_buffer r; +oggpack_buffer o; +ogg_buffer_state *bs; +ogg_reference *or; +#define TESTWORDS 256 + +void report(char *in){ + fprintf(stderr,"%s",in); + exit(1); +} + +int getbyte(ogg_reference *or,int position){ + while(or && position>=or->length){ + position-=or->length; + or=or->next; + if(or==NULL){ + fprintf(stderr,"\n\tERROR: getbyte ran off end of buffer.\n"); + exit(1); + } + } + + if((position+or->begin)&1) + return (or->buffer->data[(position+or->begin)>>1])&0xff; + else + return (or->buffer->data[(position+or->begin)>>1]>>8)&0xff; +} + +void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){ + long i,bitcount=0; + ogg_reference *or=ogg_buffer_alloc(bs,64); + for(i=0;ibuffer->data[i]= comp[i]; + or->length=i; + + oggpack_readinit(&r,or); + for(i=0;i7) + report("\nERROR: too many bits reported left over.\n"); + + /* does reading to exactly byte alignment *not* trip EOF? */ + if(oggpack_read(&o,leftover)==-1) + report("\nERROR: read to but not past exact end tripped EOF.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read to but not past exact end reported bad bitcount.\n"); + + /* does EOF trip properly after a single additional bit? */ + if(oggpack_read(&o,1)!=-1) + report("\nERROR: read past exact end did not trip EOF.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read past exact end reported bad bitcount.\n"); + + /* does EOF stay set over additional bit reads? */ + for(i=0;i<=32;i++){ + if(oggpack_read(&o,i)!=-1) + report("\nERROR: EOF did not stay set on stream.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read past exact end reported bad bitcount.\n"); + } +} + +void _end_verify2(int count){ + int i; + + /* are the proper number of bits left over? */ + int leftover=count*8-oggpack_bits(&o); + if(leftover>7) + report("\nERROR: too many bits reported left over.\n"); + + /* does reading to exactly byte alignment *not* trip EOF? */ + oggpack_adv(&o,leftover); +#ifdef ARM_LITTLE_ENDIAN + if(o.bitsLeftInSegment!=0) +#else + if(o.headend!=0) +#endif + report("\nERROR: read to but not past exact end tripped EOF.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read to but not past exact end reported bad bitcount.\n"); + + /* does EOF trip properly after a single additional bit? */ + oggpack_adv(&o,1); +#ifdef ARM_LITTLE_ENDIAN + if(o.bitsLeftInSegment>=0) +#else + if(o.headend>=0) +#endif + report("\nERROR: read past exact end did not trip EOF.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read past exact end reported bad bitcount.\n"); + + /* does EOF stay set over additional bit reads? */ + for(i=0;i<=32;i++){ + oggpack_adv(&o,i); +#ifdef ARM_LITTLE_ENDIAN + if(o.bitsLeftInSegment>=0) +#else + if(o.headend>=0) +#endif + report("\nERROR: EOF did not stay set on stream.\n"); + if(oggpack_bits(&o)!=count*8) + report("\nERROR: read past exact end reported bad bitcount.\n"); + } +} + +long ogg_buffer_length(ogg_reference *or){ + int count=0; + while(or){ + count+=or->length; + or=or->next; + } + return count; +} + +ogg_reference *ogg_buffer_extend(ogg_reference *or,long bytes){ + if(or){ + while(or->next){ + or=or->next; + } + or->next=ogg_buffer_alloc(or->buffer->ptr.owner,bytes); + return(or->next); + } + return 0; +} + +void ogg_buffer_posttruncate(ogg_reference *or,long pos){ + /* walk to the point where we want to begin truncate */ + while(or && pos>or->length){ + pos-=or->length; + or=or->next; + } + if(or){ + ogg_buffer_release(or->next); + or->next=0; + or->length=pos; + } +} + +int main(void){ + long i; + static unsigned long testbuffer1[]= + {18,12,103948,4325,543,76,432,52,3,65,4,56,32,42,34,21,1,23,32,546,456,7, + 567,56,8,8,55,3,52,342,341,4,265,7,67,86,2199,21,7,1,5,1,4}; + int test1size=43; + + static unsigned long testbuffer2[]= + {216531625L,1237861823,56732452,131,3212421,12325343,34547562,12313212, + 1233432,534,5,346435231,14436467,7869299,76326614,167548585, + 85525151,0,12321,1,349528352}; + int test2size=21; + + static unsigned long testbuffer3[]= + {1,0,14,0,1,0,12,0,1,0,0,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,1,1,1,1,0,0,1, + 0,1,30,1,1,1,0,0,1,0,0,0,12,0,11,0,1,0,0,1}; + int test3size=56; + + static unsigned long large[]= + {2136531625L,2137861823,56732452,131,3212421,12325343,34547562,12313212, + 1233432,534,5,2146435231,14436467,7869299,76326614,167548585, + 85525151,0,12321,1,2146528352}; + + int onesize=33; + static int one[33]={146,25,44,151,195,15,153,176,233,131,196,65,85,172,47,40, + 34,242,223,136,35,222,211,86,171,50,225,135,214,75,172, + 223,4}; + + int twosize=6; + static int two[6]={61,255,255,251,231,29}; + + int threesize=54; + static int three[54]={169,2,232,252,91,132,156,36,89,13,123,176,144,32,254, + 142,224,85,59,121,144,79,124,23,67,90,90,216,79,23,83, + 58,135,196,61,55,129,183,54,101,100,170,37,127,126,10, + 100,52,4,14,18,86,77,1}; + + int foursize=38; + static int four[38]={18,6,163,252,97,194,104,131,32,1,7,82,137,42,129,11,72, + 132,60,220,112,8,196,109,64,179,86,9,137,195,208,122,169, + 28,2,133,0,1}; + + int fivesize=45; + static int five[45]={169,2,126,139,144,172,30,4,80,72,240,59,130,218,73,62, + 241,24,210,44,4,20,0,248,116,49,135,100,110,130,181,169, + 84,75,159,2,1,0,132,192,8,0,0,18,22}; + + int sixsize=7; + static int six[7]={17,177,170,242,169,19,148}; + + /* Test read/write together */ + /* Later we test against pregenerated bitstreams */ + bs=ogg_buffer_create(); + + fprintf(stderr,"\nSmall preclipped packing (LSb): "); + cliptest(testbuffer1,test1size,0,one,onesize); + fprintf(stderr,"ok."); + + fprintf(stderr,"\nNull bit call (LSb): "); + cliptest(testbuffer3,test3size,0,two,twosize); + fprintf(stderr,"ok."); + + fprintf(stderr,"\nLarge preclipped packing (LSb): "); + cliptest(testbuffer2,test2size,0,three,threesize); + fprintf(stderr,"ok."); + + fprintf(stderr,"\n32 bit preclipped packing (LSb): "); + + or=ogg_buffer_alloc(bs,128); + for(i=0;ibuffer->data[i*4] = large[i]&0xff; + or->buffer->data[i*4+1] = (large[i]>>8)&0xff; + or->buffer->data[i*4+2] = (large[i]>>16)&0xff; + or->buffer->data[i*4+3] = (large[i]>>24)&0xff; + } + or->length=test2size*4; + oggpack_readinit(&r,or); + for(i=0;i>k)&0x1)<7){ + bit=0; + word++; + } + } + } + } + count2=(bitcount+7)>>3; + + /* construct random-length buffer chain from flat vector; random + byte starting offset within the length of the vector */ + { + ogg_reference *or=NULL,*orl=NULL; + long pos=0; + + /* build buffer chain */ + while(count2){ + int ilen=(rand()%32),k; + int ibegin=(rand()%32); + + + if(ilen>count2)ilen=count2; + + if(or) + orl=ogg_buffer_extend(orl,64); + else + or=orl=ogg_buffer_alloc(bs,64); + + orl->length=ilen; + orl->begin=ibegin; + + for(k=0;kbuffer->data[ibegin++]= flat[pos++]; + + count2-=ilen; + } + + if(ogg_buffer_length(or)!=(bitcount+7)/8){ + fprintf(stderr,"\nERROR: buffer length incorrect after build.\n"); + exit(1); + } + + + { + int begin=0; //=(rand()%TESTWORDS); + int ilen=(rand()%(TESTWORDS-begin)); + int bitoffset,bitcount=0; + unsigned long temp; + + for(j=0;j>(32-bitsLeftInWord) + ADDLE r12,r12,#32 @ r12= bitsLeftInWord += 32 + RSB r14,r14,#32 @ r14= 32-bitsLeftInWord + ORRLT r10,r10,r11,LSL r14 @ r10= Next 32 bits. + MOV r14,#1 + RSB r14,r14,r14,LSL r1 + AND r0,r10,r14 + LDMFD r13!,{r10,r11,PC} + +look_slow: + STMFD r13!,{r5,r6} + ADDS r10,r2,r1 @ r10= bitsLeftInSegment + bits (i.e. + @ the initial value of bitsLeftInSeg) + @ r10 = bitsLeftInSegment (initial) + @ r12 = bitsLeftInWord + RSB r14,r12,#32 @ r14= 32-bitsLeftInWord + MOV r5,r10 @ r5 = bitsLeftInSegment (initial) + BLT look_overrun + BEQ look_next_segment @ r10= r12 = 0, if we branch + CMP r12,r10 @ If bitsLeftInWord < bitsLeftInSeg + @ there must be more in the next word + LDR r10,[r3],#4 @ r10= ptr[0] + LDRLT r6,[r3] @ r6 = ptr[1] + MOV r11,#1 + MOV r10,r10,LSR r14 @ r10= first bitsLeftInWord bits + ORRLT r10,r10,r6,LSL r12 @ r10= first bitsLeftInSeg bits+crap + RSB r11,r11,r11,LSL r5 @ r11= mask + AND r10,r10,r11 @ r10= first r5 bits + @ Load the next segments data +look_next_segment: + @ At this point, r10 contains the first r5 bits of the result + LDR r11,[r0,#12] @ r11= head = b->head + @ Stall + @ Stall +look_next_segment_2: + LDR r11,[r11,#12] @ r11= head = head->next + @ Stall + @ Stall + CMP r11,#0 + BEQ look_out_of_data + LDMIA r11,{r6,r12,r14} @ r6 = buffer + @ r12= begin + @ r14= length + LDR r6,[r6] @ r6 = buffer->data + CMP r14,#0 + BEQ look_next_segment_2 + ADD r6,r6,r12 @ r6 = buffer->data+begin +look_slow_loop: + LDRB r12,[r6],#1 @ r12= *buffer + SUBS r14,r14,#1 @ r14= length + @ Stall + ORR r10,r10,r12,LSL r5 @ r10= first r5+8 bits + ADD r5,r5,#8 + BLE look_really_slow + CMP r5,r1 + BLT look_slow_loop + MOV r14,#1 + RSB r14,r14,r14,LSL r1 + AND r0,r10,r14 + LDMFD r13!,{r5,r6,r10,r11,PC} + + +look_really_slow: + CMP r5,r1 + BLT look_next_segment_2 + MOV r14,#1 + RSB r14,r14,r14,LSL r1 + AND r0,r10,r14 + LDMFD r13!,{r5,r6,r10,r11,PC} + +look_out_of_data: + @MVN r0,#0 ; return -1 + MOV r0,#0 + LDMFD r13!,{r5,r6,r10,r11,PC} + +look_overrun: + @ We had overrun when we started, so we need to skip -r10 bits. + LDR r11,[r0,#12] @ r11 = head = b->head + @ stall + @ stall +look_overrun_next_segment: + LDR r11,[r11,#12] @ r11 = head->next + @ stall + @ stall + CMP r11,#0 + BEQ look_out_of_data + LDMIA r11,{r6,r7,r14} @ r6 = buffer + @ r7 = begin + @ r14= length + LDR r6,[r6] @ r6 = buffer->data + @ stall + @ stall + ADD r6,r6,r7 @ r6 = buffer->data+begin + MOV r14,r14,LSL #3 @ r14= length in bits + ADDS r14,r14,r10 @ r14= length in bits-bits to skip + MOVLE r10,r14 + BLE look_overrun_next_segment + RSB r10,r10,#0 @ r10= bits to skip + ADD r6,r10,r10,LSR #3 @ r6 = pointer to data + MOV r10,#0 + B look_slow_loop + +oggpack_adv: + @ r0 = oggpack_buffer *b + @ r1 = bits + LDMIA r0,{r2,r3,r12} + @ r2 = bitsLeftInSegment + @ r3 = ptr + @ r12= bitsLeftInWord + SUBS r2,r2,r1 @ Does this run us out of bits in the + BLE adv_slow @ segment? If so, do it slowly + SUBS r12,r12,r1 + ADDLE r12,r12,#32 + ADDLE r3,r3,#4 + STMIA r0,{r2,r3,r12} + MOV PC,R14 +adv_slow: + STMFD r13!,{r10,r14} + + LDR r14,[r0,#12] @ r14= head + @ stall +adv_slow_loop: + LDR r1,[r0,#20] @ r1 = count + LDR r10,[r14,#8] @ r10= head->length + LDR r14,[r14,#12] @ r14= head->next + @ stall + ADD r1,r1,r10 @ r1 = count += head->length + CMP r14,#0 + BEQ adv_end + STR r1,[r0,#20] @ b->count = count + STR r14,[r0,#12] @ b->head = head + LDMIA r14,{r3,r10,r12} @ r3 = buffer + @ r10= begin + @ r12= length + LDR r3,[r3] @ r3 = buffer->data + ADD r3,r3,r10 @ r3 = Pointer to start (byte) + AND r10,r3,#3 @ r10= bytes to backtrk to word align + MOV r10,r10,LSL #3 @ r10= bits to backtrk to word align + RSB r10,r10,#32 @ r10= bits left in word + ADDS r10,r10,r2 @ r10= bits left in word after skip + ADDLE r10,r10,#32 + ADDLE r3,r3,#4 + BIC r3,r3,#3 @ r3 = Pointer to start (word) + ADDS r2,r2,r12,LSL #3 @ r2 = length in bits after advance + BLE adv_slow_loop + STMIA r0,{r2,r3,r10} + + LDMFD r13!,{r10,PC} +adv_end: + MOV r2, #0 + MOV r12,#0 + STMIA r0,{r2,r3,r12} + + LDMFD r13!,{r10,PC} + +oggpack_readinit: + @ r0 = oggpack_buffer *b + @ r1 = oggreference *r + STR r1,[r0,#12] @ b->head = r1 + STR r1,[r0,#16] @ b->tail = r1 + LDMIA r1,{r2,r3,r12} @ r2 = b->head->buffer + @ r3 = b->head->begin + @ r12= b->head->length + LDR r2,[r2] @ r2 = b->head->buffer->data + MOV r1,r12,LSL #3 @ r1 = BitsInSegment + MOV r12,#0 + ADD r3,r2,r3 @ r3 = r2+b->head->begin + BIC r2,r3,#3 @ r2 = b->headptr (word) + AND r3,r3,#3 + MOV r3,r3,LSL #3 + RSB r3,r3,#32 @ r3 = BitsInWord + STMIA r0,{r1,r2,r3} + STR r12,[r0,#20] + MOV PC,R14 + +oggpack_read: + @ r0 = oggpack_buffer *b + @ r1 = int bits + STMFD r13!,{r10,r11,r14} + LDMIA r0,{r2,r3,r12} + @ r2 = bitsLeftInSegment + @ r3 = ptr + @ r12= bitsLeftInWord + SUBS r2,r2,r1 @ bitsLeftinSegment -= bits + BLT read_slow @ Not enough bits in this segment for + @ this request. Do it slowly. + LDR r10,[r3] @ r10= ptr[0] + RSB r14,r12,#32 @ r14= 32-bitsLeftInWord + SUBS r12,r12,r1 @ r12= bitsLeftInWord -= bits + ADDLE r3,r3,#4 + LDRLT r11,[r3] @ r11= ptr[1] + MOV r10,r10,LSR r14 @ r10= ptr[0]>>(32-bitsLeftInWord) + ADDLE r12,r12,#32 @ r12= bitsLeftInWord += 32 + RSB r14,r14,#32 @ r14= 32-bitsLeftInWord + ORRLT r10,r10,r11,LSL r14 @ r10= Next 32 bits. + STMIA r0,{r2,r3,r12} + MOV r14,#1 + RSB r14,r14,r14,LSL r1 + AND r0,r10,r14 + LDMFD r13!,{r10,r11,PC} + +read_slow: + STMFD r13!,{r5,r6} + ADDS r10,r2,r1 @ r10= bitsLeftInSegment + bits (i.e. + @ the initial value of bitsLeftInSeg) + @ r10 = bitsLeftInSegment (initial) + @ r12 = bitsLeftInWord + RSB r14,r12,#32 @ r14= 32-bitsLeftInWord + MOV r5,r10 @ r5 = bitsLeftInSegment (initial) + BLT read_overrun + BEQ read_next_segment @ r10= r12 = 0, if we branch + CMP r12,r10 @ If bitsLeftInWord < bitsLeftInSeg + @ there must be more in the next word + LDR r10,[r3],#4 @ r10= ptr[0] + LDRLT r6,[r3] @ r6 = ptr[1] + MOV r11,#1 + MOV r10,r10,LSR r14 @ r10= first bitsLeftInWord bits + ORRLT r10,r10,r6,LSL r12 @ r10= first bitsLeftInSeg bits+crap + RSB r11,r11,r11,LSL r5 @ r11= mask + AND r10,r10,r11 @ r10= first r5 bits + @ Load the next segments data +read_next_segment: + @ At this point, r10 contains the first r5 bits of the result + LDR r11,[r0,#12] @ r11= head = b->head + @ Stall +read_next_segment_2: + @ r11 = head + LDR r6,[r0,#20] @ r6 = count + LDR r12,[r11,#8] @ r12= length + LDR r11,[r11,#12] @ r11= head = head->next + @ Stall + ADD r6,r6,r12 @ count += length + CMP r11,#0 + BEQ read_out_of_data + STR r11,[r0,#12] + STR r6,[r0,#20] @ b->count = count + LDMIA r11,{r6,r12,r14} @ r6 = buffer + @ r12= begin + @ r14= length + LDR r6,[r6] @ r6 = buffer->data + CMP r14,#0 + BEQ read_next_segment_2 + ADD r6,r6,r12 @ r6 = buffer->data+begin +read_slow_loop: + LDRB r12,[r6],#1 @ r12= *buffer + SUBS r14,r14,#1 @ r14= length + @ Stall + ORR r10,r10,r12,LSL r5 @ r10= first r5+8 bits + ADD r5,r5,#8 + BLE read_really_slow + CMP r5,r1 + BLT read_slow_loop +read_end: + MOV r12,#1 + RSB r12,r12,r12,LSL r1 + + @ Store back the new position + @ r2 = -number of bits to go from this segment + @ r6 = ptr + @ r14= bytesLeftInSegment + @ r11= New head value + LDMIA r11,{r3,r6,r14} @ r3 = buffer + @ r6 = begin + @ r14= length + LDR r3,[r3] @ r3 = buffer->data + ADD r1,r2,r14,LSL #3 @ r1 = bitsLeftInSegment + @ stall + ADD r6,r3,r6 @ r6 = pointer + AND r3,r6,#3 @ r3 = bytes used in first word + RSB r3,r2,r3,LSL #3 @ r3 = bits used in first word + BIC r2,r6,#3 @ r2 = word ptr + RSBS r3,r3,#32 @ r3 = bitsLeftInWord + ADDLE r3,r3,#32 + ADDLE r2,r2,#4 + STMIA r0,{r1,r2,r3} + + AND r0,r10,r12 + LDMFD r13!,{r5,r6,r10,r11,PC} + + +read_really_slow: + CMP r5,r1 + BGE read_end + LDR r14,[r11,#8] @ r14= length of segment just done + @ stall + @ stall + ADD r2,r2,r14,LSL #3 @ r2 = -bits to use from next seg + B read_next_segment_2 + +read_out_of_data: + @ Store back the new position + @ r2 = -number of bits to go from this segment + @ r6 = ptr + @ r14= bytesLeftInSegment + @ RJW: This may be overkill - we leave the buffer empty, with -1 + @ bits left in it. We might get away with just storing the + @ bitsLeftInSegment as -1. + LDR r11,[r0,#12] @ r11=head + + LDMIA r11,{r3,r6,r14} @ r3 = buffer + @ r6 = begin + @ r14= length + LDR r3,[r3] @ r3 = buffer->data + ADD r6,r3,r6 @ r6 = pointer + ADD r6,r6,r14 + AND r3,r6,#3 @ r3 = bytes used in first word + MOV r3,r3,LSL #3 @ r3 = bits used in first word + BIC r2,r6,#3 @ r2 = word ptr + RSBS r3,r3,#32 @ r3 = bitsLeftInWord + MVN r1,#0 @ r1 = -1 = bitsLeftInSegment + STMIA r0,{r1,r2,r3} + @MVN r0,#0 ; return -1 + MOV r0,#0 + LDMFD r13!,{r5,r6,r10,r11,PC} + +read_overrun: + @ We had overrun when we started, so we need to skip -r10 bits. + LDR r11,[r0,#12] @ r11 = head = b->head + @ stall + @ stall +read_overrun_next_segment: + LDR r11,[r11,#12] @ r11 = head->next + @ stall + @ stall + CMP r11,#0 + BEQ read_out_of_data + LDMIA r11,{r6,r7,r14} @ r6 = buffer + @ r7 = begin + @ r14= length + LDR r6,[r6] @ r6 = buffer->data + @ stall + @ stall + ADD r6,r6,r7 @ r6 = buffer->data+begin + MOV r14,r14,LSL #3 @ r14= length in bits + ADDS r14,r14,r10 @ r14= length in bits-bits to skip + MOVLE r10,r14 + BLE read_overrun_next_segment + RSB r10,r10,#0 @ r10= bits to skip + ADD r6,r10,r10,LSR #3 @ r6 = pointer to data + MOV r10,#0 + B read_slow_loop + + @ END diff --git a/Tremolo/codebook.c b/Tremolo/codebook.c new file mode 100644 index 0000000..5f46594 --- /dev/null +++ b/Tremolo/codebook.c @@ -0,0 +1,874 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: basic codebook pack/unpack/code/decode operations + + ********************************************************************/ + +#include +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codebook.h" +#include "misc.h" +#include "os.h" + + +/**** pack/unpack helpers ******************************************/ +int _ilog(unsigned int v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +static ogg_uint32_t decpack(long entry,long used_entry,long quantvals, + codebook *b,oggpack_buffer *opb,int maptype){ + ogg_uint32_t ret=0; + int j; + + switch(b->dec_type){ + + case 0: + return (ogg_uint32_t)entry; + + case 1: + if(maptype==1){ + /* vals are already read into temporary column vector here */ + for(j=0;jdim;j++){ + ogg_uint32_t off=entry%quantvals; + entry/=quantvals; + ret|=((ogg_uint16_t *)(b->q_val))[off]<<(b->q_bits*j); + } + }else{ + for(j=0;jdim;j++) + ret|=oggpack_read(opb,b->q_bits)<<(b->q_bits*j); + } + return ret; + + case 2: + for(j=0;jdim;j++){ + ogg_uint32_t off=entry%quantvals; + entry/=quantvals; + ret|=off<<(b->q_pack*j); + } + return ret; + + case 3: + return (ogg_uint32_t)used_entry; + + } + return 0; /* silence compiler */ +} + +/* 32 bit float (not IEEE; nonnormalized mantissa + + biased exponent) : neeeeeee eeemmmmm mmmmmmmm mmmmmmmm + Why not IEEE? It's just not that important here. */ + +static ogg_int32_t _float32_unpack(long val,int *point){ + long mant=val&0x1fffff; + int sign=val&0x80000000; + + *point=((val&0x7fe00000L)>>21)-788; + + if(mant){ + while(!(mant&0x40000000)){ + mant<<=1; + *point-=1; + } + if(sign)mant= -mant; + }else{ + *point=-9999; + } + return mant; +} + +/* choose the smallest supported node size that fits our decode table. + Legal bytewidths are 1/1 1/2 2/2 2/4 4/4 */ +static int _determine_node_bytes(long used, int leafwidth){ + + /* special case small books to size 4 to avoid multiple special + cases in repack */ + if(used<2) + return 4; + + if(leafwidth==3)leafwidth=4; + if(_ilog(3*used-6)+1 <= leafwidth*4) + return leafwidth/2?leafwidth/2:1; + return leafwidth; +} + +/* convenience/clarity; leaves are specified as multiple of node word + size (1 or 2) */ +static int _determine_leaf_words(int nodeb, int leafwidth){ + if(leafwidth>nodeb)return 2; + return 1; +} + +/* given a list of word lengths, number of used entries, and byte + width of a leaf, generate the decode table */ +static int _make_words(char *l,long n,ogg_uint32_t *r,long quantvals, + codebook *b, oggpack_buffer *opb,int maptype){ + long i,j,count=0; + long top=0; + ogg_uint32_t marker[33]; + + if (n<1) + return 1; + + if(n<2){ + r[0]=0x80000000; + }else{ + memset(marker,0,sizeof(marker)); + + for(i=0;i>(length-j-1))&1; + if(chase>=top){ + if (chase < 0 || chase >= n) return 1; + top++; + r[chase*2]=top; + r[chase*2+1]=0; + }else + if (chase < 0 || chase >= n || chase*2+bit > n*2+1) return 1; + if(!r[chase*2+bit]) + r[chase*2+bit]=top; + chase=r[chase*2+bit]; + if (chase < 0 || chase >= n) return 1; + } + { + int bit=(entry>>(length-j-1))&1; + if(chase>=top){ + top++; + r[chase*2+1]=0; + } + r[chase*2+bit]= decpack(i,count++,quantvals,b,opb,maptype) | + 0x80000000; + } + + /* Look to see if the next shorter marker points to the node + above. if so, update it and repeat. */ + for(j=length;j>0;j--){ + if(marker[j]&1){ + marker[j]=marker[j-1]<<1; + break; + } + marker[j]++; + } + + /* prune the tree; the implicit invariant says all the longer + markers were dangling from our just-taken node. Dangle them + from our *new* node. */ + for(j=length+1;j<33;j++) + if((marker[j]>>1) == entry){ + entry=marker[j]; + marker[j]=marker[j-1]<<1; + }else + break; + } + } + } + + return 0; +} + +static int _make_decode_table(codebook *s,char *lengthlist,long quantvals, + oggpack_buffer *opb,int maptype){ + int i; + ogg_uint32_t *work; + + if (!lengthlist) return 1; + if(s->dec_nodeb==4){ + /* Over-allocate by using s->entries instead of used_entries. + * This means that we can use s->entries to enforce size in + * _make_words without messing up length list looping. + * This probably wastes a bit of space, but it shouldn't + * impact behavior or size too much. + */ + s->dec_table=_ogg_malloc((s->entries*2+1)*sizeof(*work)); + if (!s->dec_table) return 1; + /* +1 (rather than -2) is to accommodate 0 and 1 sized books, + which are specialcased to nodeb==4 */ + if(_make_words(lengthlist,s->entries, + s->dec_table,quantvals,s,opb,maptype))return 1; + + return 0; + } + + if (s->used_entries > INT_MAX/2 || + s->used_entries*2 > INT_MAX/((long) sizeof(*work)) - 1) return 1; + /* Overallocate as above */ + work=alloca((s->entries*2+1)*sizeof(*work)); + if(_make_words(lengthlist,s->entries,work,quantvals,s,opb,maptype))return 1; + if (s->used_entries > INT_MAX/(s->dec_leafw+1)) return 1; + if (s->dec_nodeb && s->used_entries * (s->dec_leafw+1) > INT_MAX/s->dec_nodeb) return 1; + s->dec_table=_ogg_malloc((s->used_entries*(s->dec_leafw+1)-2)* + s->dec_nodeb); + if (!s->dec_table) return 1; + + if(s->dec_leafw==1){ + switch(s->dec_nodeb){ + case 1: + for(i=0;iused_entries*2-2;i++) + ((unsigned char *)s->dec_table)[i]=(unsigned char) + (((work[i] & 0x80000000UL) >> 24) | work[i]); + break; + case 2: + for(i=0;iused_entries*2-2;i++) + ((ogg_uint16_t *)s->dec_table)[i]=(ogg_uint16_t) + (((work[i] & 0x80000000UL) >> 16) | work[i]); + break; + } + + }else{ + /* more complex; we have to do a two-pass repack that updates the + node indexing. */ + long top=s->used_entries*3-2; + if(s->dec_nodeb==1){ + unsigned char *out=(unsigned char *)s->dec_table; + + for(i=s->used_entries*2-4;i>=0;i-=2){ + if(work[i]&0x80000000UL){ + if(work[i+1]&0x80000000UL){ + top-=4; + out[top]=(work[i]>>8 & 0x7f)|0x80; + out[top+1]=(work[i+1]>>8 & 0x7f)|0x80; + out[top+2]=work[i] & 0xff; + out[top+3]=work[i+1] & 0xff; + }else{ + top-=3; + out[top]=(work[i]>>8 & 0x7f)|0x80; + out[top+1]=work[work[i+1]*2]; + out[top+2]=work[i] & 0xff; + } + }else{ + if(work[i+1]&0x80000000UL){ + top-=3; + out[top]=work[work[i]*2]; + out[top+1]=(work[i+1]>>8 & 0x7f)|0x80; + out[top+2]=work[i+1] & 0xff; + }else{ + top-=2; + out[top]=work[work[i]*2]; + out[top+1]=work[work[i+1]*2]; + } + } + work[i]=top; + } + }else{ + ogg_uint16_t *out=(ogg_uint16_t *)s->dec_table; + for(i=s->used_entries*2-4;i>=0;i-=2){ + if(work[i]&0x80000000UL){ + if(work[i+1]&0x80000000UL){ + top-=4; + out[top]=(work[i]>>16 & 0x7fff)|0x8000; + out[top+1]=(work[i+1]>>16 & 0x7fff)|0x8000; + out[top+2]=work[i] & 0xffff; + out[top+3]=work[i+1] & 0xffff; + }else{ + top-=3; + out[top]=(work[i]>>16 & 0x7fff)|0x8000; + out[top+1]=work[work[i+1]*2]; + out[top+2]=work[i] & 0xffff; + } + }else{ + if(work[i+1]&0x80000000UL){ + top-=3; + out[top]=work[work[i]*2]; + out[top+1]=(work[i+1]>>16 & 0x7fff)|0x8000; + out[top+2]=work[i+1] & 0xffff; + }else{ + top-=2; + out[top]=work[work[i]*2]; + out[top+1]=work[work[i+1]*2]; + } + } + work[i]=top; + } + } + } + + return 0; +} + +/* most of the time, entries%dimensions == 0, but we need to be + well defined. We define that the possible vales at each + scalar is values == entries/dim. If entries%dim != 0, we'll + have 'too few' values (values*dimentries); + int vals=b->entries>>((bits-1)*(b->dim-1)/b->dim); + + while(1){ + long acc=1; + long acc1=1; + int i; + for(i=0;idim;i++){ + acc*=vals; + acc1*=vals+1; + } + if(acc<=b->entries && acc1>b->entries){ + return(vals); + }else{ + if(acc>b->entries){ + vals--; + }else{ + vals++; + } + } + } +} + +void vorbis_book_clear(codebook *b){ + /* static book is not cleared; we're likely called on the lookup and + the static codebook belongs to the info struct */ + if(b->q_val)_ogg_free(b->q_val); + if(b->dec_table)_ogg_free(b->dec_table); + if(b->dec_buf)_ogg_free(b->dec_buf); + + memset(b,0,sizeof(*b)); +} + +int vorbis_book_unpack(oggpack_buffer *opb,codebook *s){ + char *lengthlist=NULL; + int quantvals=0; + long i,j; + int maptype; + + memset(s,0,sizeof(*s)); + + /* make sure alignment is correct */ + if(oggpack_read(opb,24)!=0x564342)goto _eofout; + + /* first the basic parameters */ + s->dim=oggpack_read(opb,16); + s->dec_buf=_ogg_malloc(sizeof(ogg_int32_t)*s->dim); + if (s->dec_buf == NULL) + goto _errout; + s->entries=oggpack_read(opb,24); + if(s->entries<=0)goto _eofout; + if(s->dim<=0)goto _eofout; + if(_ilog(s->dim)+_ilog(s->entries)>24)goto _eofout; + if (s->dim > INT_MAX/s->entries) goto _eofout; + + /* codeword ordering.... length ordered or unordered? */ + switch((int)oggpack_read(opb,1)){ + case 0: + /* unordered */ + lengthlist=(char *)alloca(sizeof(*lengthlist)*s->entries); + if(!lengthlist) goto _eofout; + + /* allocated but unused entries? */ + if(oggpack_read(opb,1)){ + /* yes, unused entries */ + + for(i=0;ientries;i++){ + if(oggpack_read(opb,1)){ + long num=oggpack_read(opb,5); + if(num==-1)goto _eofout; + lengthlist[i]=(char)(num+1); + s->used_entries++; + if(num+1>s->dec_maxlength)s->dec_maxlength=num+1; + }else + lengthlist[i]=0; + } + }else{ + /* all entries used; no tagging */ + s->used_entries=s->entries; + for(i=0;ientries;i++){ + long num=oggpack_read(opb,5); + if(num==-1)goto _eofout; + lengthlist[i]=(char)(num+1); + if(num+1>s->dec_maxlength)s->dec_maxlength=num+1; + } + } + + break; + case 1: + /* ordered */ + { + long length=oggpack_read(opb,5)+1; + + s->used_entries=s->entries; + lengthlist=(char *)alloca(sizeof(*lengthlist)*s->entries); + if (!lengthlist) goto _eofout; + + for(i=0;ientries;){ + long num=oggpack_read(opb,_ilog(s->entries-i)); + if(num<0)goto _eofout; + for(j=0;jentries;j++,i++) + lengthlist[i]=(char)length; + s->dec_maxlength=length; + length++; + } + } + break; + default: + /* EOF */ + goto _eofout; + } + + + /* Do we have a mapping to unpack? */ + + if((maptype=oggpack_read(opb,4))>0){ + s->q_min=_float32_unpack(oggpack_read(opb,32),&s->q_minp); + s->q_del=_float32_unpack(oggpack_read(opb,32),&s->q_delp); + s->q_bits=oggpack_read(opb,4)+1; + s->q_seq=oggpack_read(opb,1); + + s->q_del>>=s->q_bits; + s->q_delp+=s->q_bits; + } + + switch(maptype){ + case 0: + + /* no mapping; decode type 0 */ + + /* how many bytes for the indexing? */ + /* this is the correct boundary here; we lose one bit to + node/leaf mark */ + s->dec_nodeb=_determine_node_bytes(s->used_entries,_ilog(s->entries)/8+1); + s->dec_leafw=_determine_leaf_words(s->dec_nodeb,_ilog(s->entries)/8+1); + s->dec_type=0; + + if(_make_decode_table(s,lengthlist,quantvals,opb,maptype)) goto _errout; + break; + + case 1: + + /* mapping type 1; implicit values by lattice position */ + quantvals=_book_maptype1_quantvals(s); + + /* dec_type choices here are 1,2; 3 doesn't make sense */ + { + /* packed values */ + long total1=(s->q_bits*s->dim+8)/8; /* remember flag bit */ + if (s->dim > (INT_MAX-8)/s->q_bits) goto _eofout; + /* vector of column offsets; remember flag bit */ + long total2=(_ilog(quantvals-1)*s->dim+8)/8+(s->q_bits+7)/8; + + + if(total1<=4 && total1<=total2){ + /* use dec_type 1: vector of packed values */ + + /* need quantized values before */ + s->q_val=alloca(sizeof(ogg_uint16_t)*quantvals); + if (!s->q_val) goto _eofout; + for(i=0;iq_val)[i]=(ogg_uint16_t)oggpack_read(opb,s->q_bits); + + if(oggpack_eop(opb)){ + s->q_val=0; /* cleanup must not free alloca memory */ + goto _eofout; + } + + s->dec_type=1; + s->dec_nodeb=_determine_node_bytes(s->used_entries, + (s->q_bits*s->dim+8)/8); + s->dec_leafw=_determine_leaf_words(s->dec_nodeb, + (s->q_bits*s->dim+8)/8); + if(_make_decode_table(s,lengthlist,quantvals,opb,maptype)){ + s->q_val=0; /* cleanup must not free alloca memory */ + goto _errout; + } + + s->q_val=0; /* about to go out of scope; _make_decode_table + was using it */ + + }else{ + /* use dec_type 2: packed vector of column offsets */ + + /* need quantized values before */ + if(s->q_bits<=8){ + s->q_val=_ogg_malloc(quantvals); + if (!s->q_val) goto _eofout; + for(i=0;iq_val)[i]=(unsigned char)oggpack_read(opb,s->q_bits); + }else{ + s->q_val=_ogg_malloc(quantvals*2); + if (!s->q_val) goto _eofout; + for(i=0;iq_val)[i]=(ogg_uint16_t)oggpack_read(opb,s->q_bits); + } + + if(oggpack_eop(opb))goto _eofout; + + s->q_pack=_ilog(quantvals-1); + s->dec_type=2; + s->dec_nodeb=_determine_node_bytes(s->used_entries, + (_ilog(quantvals-1)*s->dim+8)/8); + s->dec_leafw=_determine_leaf_words(s->dec_nodeb, + (_ilog(quantvals-1)*s->dim+8)/8); + if(_make_decode_table(s,lengthlist,quantvals,opb,maptype))goto _errout; + + } + } + break; + case 2: + + /* mapping type 2; explicit array of values */ + quantvals=s->entries*s->dim; + /* dec_type choices here are 1,3; 2 is not possible */ + + if( (s->q_bits*s->dim+8)/8 <=4){ /* remember flag bit */ + /* use dec_type 1: vector of packed values */ + + s->dec_type=1; + s->dec_nodeb=_determine_node_bytes(s->used_entries,(s->q_bits*s->dim+8)/8); + s->dec_leafw=_determine_leaf_words(s->dec_nodeb,(s->q_bits*s->dim+8)/8); + if(_make_decode_table(s,lengthlist,quantvals,opb,maptype))goto _errout; + + }else{ + /* use dec_type 3: scalar offset into packed value array */ + + s->dec_type=3; + s->dec_nodeb=_determine_node_bytes(s->used_entries,_ilog(s->used_entries-1)/8+1); + s->dec_leafw=_determine_leaf_words(s->dec_nodeb,_ilog(s->used_entries-1)/8+1); + if(_make_decode_table(s,lengthlist,quantvals,opb,maptype))goto _errout; + + /* get the vals & pack them */ + s->q_pack=(s->q_bits+7)/8*s->dim; + s->q_val=_ogg_malloc(s->q_pack*s->used_entries); + + if(s->q_bits<=8){ + for(i=0;iused_entries*s->dim;i++) + ((unsigned char *)(s->q_val))[i]=(unsigned char)oggpack_read(opb,s->q_bits); + }else{ + for(i=0;iused_entries*s->dim;i++) + ((ogg_uint16_t *)(s->q_val))[i]=(ogg_uint16_t)oggpack_read(opb,s->q_bits); + } + } + break; + default: + goto _errout; + } + + if (s->dec_nodeb==1) + if (s->dec_leafw == 1) + s->dec_method = 0; + else + s->dec_method = 1; + else if (s->dec_nodeb==2) + if (s->dec_leafw == 1) + s->dec_method = 2; + else + s->dec_method = 3; + else + s->dec_method = 4; + + if(oggpack_eop(opb))goto _eofout; + + return 0; + _errout: + _eofout: + vorbis_book_clear(s); + return -1; +} + +#ifndef ONLY_C +ogg_uint32_t decode_packed_entry_number(codebook *book, + oggpack_buffer *b); +#else +static inline ogg_uint32_t decode_packed_entry_number(codebook *book, + oggpack_buffer *b){ + ogg_uint32_t chase=0; + int read=book->dec_maxlength; + long lok = oggpack_look(b,read),i; + + while(lok<0 && read>1) + lok = oggpack_look(b, --read); + + if(lok<0){ + oggpack_adv(b,1); /* force eop */ + return -1; + } + + /* chase the tree with the bits we got */ + switch (book->dec_method) + { + case 0: + { + /* book->dec_nodeb==1, book->dec_leafw==1 */ + /* 8/8 - Used */ + unsigned char *t=(unsigned char *)book->dec_table; + + for(i=0;i>i)&1)]; + if(chase&0x80UL)break; + } + chase&=0x7fUL; + break; + } + case 1: + { + /* book->dec_nodeb==1, book->dec_leafw!=1 */ + /* 8/16 - Used by infile2 */ + unsigned char *t=(unsigned char *)book->dec_table; + for(i=0;i>i)&1; + int next=t[chase+bit]; + if(next&0x80){ + chase= (next<<8) | t[chase+bit+1+(!bit || t[chase]&0x80)]; + break; + } + chase=next; + } + //chase&=0x7fffUL; + chase&=~0x8000UL; + break; + } + case 2: + { + /* book->dec_nodeb==2, book->dec_leafw==1 */ + /* 16/16 - Used */ + for(i=0;idec_table))[chase*2+((lok>>i)&1)]; + if(chase&0x8000UL)break; + } + //chase&=0x7fffUL; + chase&=~0x8000UL; + break; + } + case 3: + { + /* book->dec_nodeb==2, book->dec_leafw!=1 */ + /* 16/32 - Used by infile2 */ + ogg_uint16_t *t=(ogg_uint16_t *)book->dec_table; + for(i=0;i>i)&1; + int next=t[chase+bit]; + if(next&0x8000){ + chase= (next<<16) | t[chase+bit+1+(!bit || t[chase]&0x8000)]; + break; + } + chase=next; + } + //chase&=0x7fffffffUL; + chase&=~0x80000000UL; + break; + } + case 4: + { + Output("32/32"); + for(i=0;idec_table))[chase*2+((lok>>i)&1)]; + if(chase&0x80000000UL)break; + } + //chase&=0x7fffffffUL; + chase&=~0x80000000UL; + break; + } + } + + if(idec_type)return -1; + return decode_packed_entry_number(book,b); +} + +#ifndef ONLY_C +int decode_map(codebook *s, oggpack_buffer *b, ogg_int32_t *v, int point); +#else +static int decode_map(codebook *s, oggpack_buffer *b, ogg_int32_t *v, int point){ + ogg_uint32_t entry = decode_packed_entry_number(s,b); + int i; + if(oggpack_eop(b))return(-1); + + /* 1 used by test file 0 */ + + /* according to decode type */ + switch(s->dec_type){ + case 1:{ + /* packed vector of values */ + int mask=(1<q_bits)-1; + for(i=0;idim;i++){ + v[i]=entry&mask; + entry>>=s->q_bits; + } + break; + } + case 2:{ + /* packed vector of column offsets */ + int mask=(1<q_pack)-1; + for(i=0;idim;i++){ + if(s->q_bits<=8) + v[i]=((unsigned char *)(s->q_val))[entry&mask]; + else + v[i]=((ogg_uint16_t *)(s->q_val))[entry&mask]; + entry>>=s->q_pack; + } + break; + } + case 3:{ + /* offset into array */ + void *ptr=s->q_val+entry*s->q_pack; + + if(s->q_bits<=8){ + for(i=0;idim;i++) + v[i]=((unsigned char *)ptr)[i]; + }else{ + for(i=0;idim;i++) + v[i]=((ogg_uint16_t *)ptr)[i]; + } + break; + } + default: + return -1; + } + + /* we have the unpacked multiplicands; compute final vals */ + { + int shiftM = point-s->q_delp; + ogg_int32_t add = point-s->q_minp; + int mul = s->q_del; + + if(add>0) + add= s->q_min >> add; + else + add= s->q_min << -add; + if (shiftM<0) + { + mul <<= -shiftM; + shiftM = 0; + } + add <<= shiftM; + + for(i=0;idim;i++) + v[i]= ((add + v[i] * mul) >> shiftM); + + if(s->q_seq) + for(i=1;idim;i++) + v[i]+=v[i-1]; + } + + return 0; +} +#endif + +/* returns 0 on OK or -1 on eof *************************************/ +long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + int step=n/book->dim; + ogg_int32_t *v = book->dec_buf;//(ogg_int32_t *)alloca(sizeof(*v)*book->dim); + int i,j,o; + if (!v) return -1; + + for (j=0;jdim;i++,o+=step) + a[o]+=v[i]; + } + } + return 0; +} + +long vorbis_book_decodev_add(codebook *book,ogg_int32_t *a, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + ogg_int32_t *v = book->dec_buf;//(ogg_int32_t *)alloca(sizeof(*v)*book->dim); + int i,j; + + if (!v) return -1; + for(i=0;idim;j++) + a[i++]+=v[j]; + } + } + return 0; +} + +long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + ogg_int32_t *v = book->dec_buf;//(ogg_int32_t *)alloca(sizeof(*v)*book->dim); + int i,j; + + if (!v) return -1; + for(i=0;idim;j++) + a[i++]=v[j]; + } + }else{ + int i,j; + + for(i=0;idim;j++) + a[i++]=0; + } + } + + return 0; +} + +#ifndef ONLY_C +long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a, + long offset,int ch, + oggpack_buffer *b,int n,int point); +#else +long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a, + long offset,int ch, + oggpack_buffer *b,int n,int point){ + if(book->used_entries>0){ + + ogg_int32_t *v = book->dec_buf;//(ogg_int32_t *)alloca(sizeof(*v)*book->dim); + long i,j; + int chptr=0; + + if (!v) return -1; + for(i=offset;idim;j++){ + a[chptr++][i]+=v[j]; + if(chptr==ch){ + chptr=0; + i++; + } + } + } + } + + return 0; +} +#endif diff --git a/Tremolo/codebook.h b/Tremolo/codebook.h new file mode 100644 index 0000000..5a58bb2 --- /dev/null +++ b/Tremolo/codebook.h @@ -0,0 +1,69 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: basic shared codebook operations + + ********************************************************************/ + +#ifndef _V_CODEBOOK_H_ +#define _V_CODEBOOK_H_ + +#include "ogg.h" + +typedef struct codebook{ + /* Top 15 used in ARM code */ + int dec_maxlength; + void *dec_table; + int dec_method; + int dec_type; /* 0 = entry number + 1 = packed vector of values + 2 = packed vector of column offsets, maptype 1 + 3 = scalar offset into value array, maptype 2 */ + int q_bits; + long dim; /* codebook dimensions (elements per vector) */ + int q_delp; + int q_minp; + ogg_int32_t q_del; + ogg_int32_t q_min; + int q_seq; + int q_pack; + void *q_val; + long used_entries; /* populated codebook entries */ + ogg_int32_t *dec_buf; + + /* C only */ + int dec_nodeb; + int dec_leafw; + + long entries; /* codebook entries */ + +} codebook; + +extern void vorbis_book_clear(codebook *b); +extern int vorbis_book_unpack(oggpack_buffer *b,codebook *c); + +extern long vorbis_book_decode(codebook *book, oggpack_buffer *b); +extern long vorbis_book_decodevs_add(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_set(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_add(codebook *book, ogg_int32_t *a, + oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodevv_add(codebook *book, ogg_int32_t **a, + long off,int ch, + oggpack_buffer *b,int n,int point); + +extern int _ilog(unsigned int v); + + +#endif diff --git a/Tremolo/codec_internal.h b/Tremolo/codec_internal.h new file mode 100644 index 0000000..6b3085b --- /dev/null +++ b/Tremolo/codec_internal.h @@ -0,0 +1,215 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: libvorbis codec headers + + ********************************************************************/ + +#ifndef _V_CODECI_H_ +#define _V_CODECI_H_ + +#define CHUNKSIZE 1024 + +#include "codebook.h" +#include "ivorbiscodec.h" + +#define VI_TRANSFORMB 1 +#define VI_WINDOWB 1 +#define VI_TIMEB 1 +#define VI_FLOORB 2 +#define VI_RESB 3 +#define VI_MAPB 1 + +typedef void vorbis_info_floor; + +/* vorbis_dsp_state buffers the current vorbis audio + analysis/synthesis state. The DSP state belongs to a specific + logical bitstream ****************************************************/ +struct vorbis_dsp_state{ + vorbis_info *vi; + oggpack_buffer opb; + + ogg_int32_t **work; + ogg_int32_t **mdctright; + int out_begin; + int out_end; + + long lW; + long W; + + ogg_int64_t granulepos; + ogg_int64_t sequence; + ogg_int64_t sample_count; + +}; + + +/* Floor backend generic *****************************************/ + +extern vorbis_info_floor *floor0_info_unpack(vorbis_info *,oggpack_buffer *); +extern void floor0_free_info(vorbis_info_floor *); +extern int floor0_memosize(vorbis_info_floor *); +extern ogg_int32_t *floor0_inverse1(struct vorbis_dsp_state *, + vorbis_info_floor *,ogg_int32_t *); +extern int floor0_inverse2 (struct vorbis_dsp_state *,vorbis_info_floor *, + ogg_int32_t *buffer,ogg_int32_t *); + +extern vorbis_info_floor *floor1_info_unpack(vorbis_info *,oggpack_buffer *); +extern void floor1_free_info(vorbis_info_floor *); +extern int floor1_memosize(vorbis_info_floor *); +extern ogg_int32_t *floor1_inverse1(struct vorbis_dsp_state *, + vorbis_info_floor *,ogg_int32_t *); +extern int floor1_inverse2 (struct vorbis_dsp_state *,vorbis_info_floor *, + ogg_int32_t *buffer,ogg_int32_t *); + +typedef struct{ + int order; + long rate; + long barkmap; + + int ampbits; + int ampdB; + + int numbooks; /* <= 16 */ + char books[16]; + +} vorbis_info_floor0; + +typedef struct{ + char class_dim; /* 1 to 8 */ + char class_subs; /* 0,1,2,3 (bits: 1<max_length + @ r6 = book->dec_table + @ r7 = book->dec_method + MOV r5,r1 @ r5 = b + + MOV r0,r5 @ r0 = b + MOV r1,r4 @ r1 = read + BL oggpack_look +dpen_read_return: + CMP r0,#0 + BLT dpen_readfailed + + @ r0 = lok + @ r4 = read + @ r5 = b + @ r6 = dec_table + @ r7 = dec_method + + CMP r7, #3 + BGT meth4 + BEQ meth3 + CMP r7, #1 + BGT meth2 + BEQ meth1 +meth0: + RSB r1, r4, #0 @ r1 = i-read = 0-read + MOV r7, #0 @ r7 = chase +m0_loop: + MOVS r0, r0, LSR #1 @ r0 = lok>>1 C = bottom bit + ADC r2, r6, r7, LSL #1 @ r8 = &t[chase*2+C] + LDRB r7, [r2] + ADDS r1, r1, #1 @ r1 = i-read++ (i-read<0 => i= 0) === (i >= read) + MVNGT r7, #0 @ if (i >= read) value to return = -1 + ADD r1, r1, r4 @ r1 = i-read+read+1 = i +1 + MOV r0, r5 @ r0 = b + BL oggpack_adv @ oggpack_adv(b, i+1); + MOV r0, r7 @ return chase + LDMFD r13!,{r4-r8,r10,PC} + +meth1: + @ r0 = lok + @ r4 = read + @ r5 = b + @ r6 = dec_table + RSB r1, r4, #0 @ r1 = i = -read + MOV r10,#0 @ r10= next = 0 +m1_loop: + MOV r7, r10 @ r7 = chase=next + MOVS r0, r0, LSR #1 @ r0 = lok>>1 C = bottom bit + ADC r8, r6, r7 @ r8 = t+chase+bit + LDRB r10,[r8], -r6 @ r10= next=t[chase+bit] r8=chase+bit + ADDS r1, r1, #1 @ r1 = i++ + @ stall Xscale + CMPLT r10,#0x80 @ if (next & 0x80) == 0 + BLT m1_loop + + ADD r1, r1, r4 @ r1 = i+read + MOV r0, r5 @ r0 = b + BL oggpack_adv @ oggpack_adv(b, i) + + CMP r10,#0x80 + BLT duff + + CMP r8, r7 @ if bit==0 (chase+bit==chase) (sets C) + LDRNEB r14,[r6, r7] @ r14= t[chase] + MOVEQ r14,#128 + ADC r12,r8, r6 @ r12= chase+bit+1+t + LDRB r14,[r12,r14,LSR #7] @ r14= t[chase+bit+1+(!bit || t[chase]0x0x80)] + BIC r10,r10,#0x80 @ r3 = next &= ~0x80 + @ stall Xscale + ORR r0, r14,r10,LSL #8 @ r7 = chase = (next<<8) | r14 + + LDMFD r13!,{r4-r8,r10,PC} + + +meth2: + RSB r1, r4, #0 @ r1 = i-read = 0-read + MOV r7, #0 @ r7 = chase + MOV r6, r6, LSR #1 +m2_loop: + MOVS r0, r0, LSR #1 @ r0 = lok>>1 C = bottom bit + ADC r2, r6, r7, LSL #1 @ r8 = &t[chase*2+C] + LDRH r7, [r2, r2] + ADDS r1, r1, #1 @ r1 = i-read++ (i-read<0 => i= 0) === (i >= read) + MVNGT r7, #0 @ if (i >= read) value to return = -1 + ADD r1, r1, r4 @ r1 = i-read+read+1 = i +1 + MOV r0, r5 @ r0 = b + BL oggpack_adv @ oggpack_adv(b, i+1); + MOV r0, r7 @ return chase + LDMFD r13!,{r4-r8,r10,PC} + +meth3: + @ r0 = lok + @ r4 = read + @ r5 = b + @ r6 = dec_table + RSB r1, r4, #0 @ r1 = i = -read + MOV r10,#0 @ r10= next = 0 +m3_loop: + MOV r7, r10 @ r7 = chase=next + MOVS r0, r0, LSR #1 @ r0 = lok>>1 C = bottom bit + ADC r8, r7, #0 @ r8 = chase+bit + MOV r8, r8, LSL #1 @ r8 = (chase+bit)<<1 + LDRH r10,[r6, r8] @ r10= next=t[chase+bit] + ADDS r1, r1, #1 @ r1 = i++ + @ stall Xscale + CMPLT r10,#0x8000 @ if (next & 0x8000) == 0 + BLT m3_loop + + ADD r1, r1, r4 @ r1 = i+read + MOV r0, r5 @ r0 = b + BL oggpack_adv @ oggpack_adv(b, i) + + CMP r10,#0x8000 + BLT duff + + MOV r7, r7, LSL #1 + CMP r8, r7 @ if bit==0 (chase+bit==chase) sets C + LDRNEH r14,[r6, r7] @ r14= t[chase] + MOVEQ r14,#0x8000 + ADC r12,r8, r14,LSR #15 @ r12= 1+((chase+bit)<<1)+(!bit || t[chase]0x0x8000) + ADC r12,r12,r14,LSR #15 @ r12= t + (1+chase+bit+(!bit || t[chase]0x0x8000))<<1 + LDRH r14,[r6, r12] @ r14= t[chase+bit+1 + BIC r10,r10,#0x8000 @ r3 = next &= ~0x8000 + @ stall Xscale + ORR r0, r14,r10,LSL #16 @ r7 = chase = (next<<16) | r14 + + LDMFD r13!,{r4-r8,r10,PC} + +meth4: + RSB r1, r4, #0 @ r1 = i-read = 0-read + MOV r7, #0 @ r7 = chase +m4_loop: + MOVS r0, r0, LSR #1 @ r0 = lok>>1 C = bottom bit + ADC r2, r7, r7 @ r8 = chase*2+C + LDR r7, [r6, r2, LSL #2] + ADDS r1, r1, #1 @ r1 = i-read++ (i-read<0 => i= 0) === (i >= read) + MVNGT r7, #0 @ if (i >= read) value to return = -1 + ADD r1, r1, r4 @ r1 = i-read+read+1 = i +1 + MOV r0, r5 @ r0 = b + BL oggpack_adv @ oggpack_adv(b, i+1); + MOV r0, r7 @ return chase + LDMFD r13!,{r4-r8,r10,PC} + +decode_map: + @ r0 = codebook *s + @ r1 = oggpack_buffer *b + @ r2 = int v + @ r3 = int point + STMFD r13!,{r4-r11,r14} + + MOV r4, r0 @ r4 = s + MOV r5, r1 @ r5 = b + MOV r6, r2 @ r6 = v + MOV r7, r3 @ r7 = point + BL decode_packed_entry_number + MOV r8, r0 + + MOV r0, r5 + BL oggpack_eop + CMP r0, #0 + BNE dm_duff + + @ r4 = s + @ r5 = b + @ r6 = v + @ r7 = point + @ r8 = entry + + LDR r1, [r4,#12] @ r1 = s->dec_type + LDR r2, [r4,#16] @ r2 = s->q_bits + LDR r3, [r4,#20] @ r3 = s->dim + LDR r5, [r4,#24] @ r5 = s->q_delp + LDR r11,[r4,#28] @ r11= s->q_minp + LDR r12,[r4,#32] @ r12= s->q_del = mul + LDR r14,[r4,#36] @ r14= s->q_min + SUBS r11,r7, r11 @ r11= add = point - s->q_minp + + MOVGT r14,r14,ASR r11 @ r14= add = s->q_min >> add (if add >0) + RSBLT r11,r11,#0 + MOVLT r14,r14,LSL r11 @ r14= add = s->q_min << -add (if add < 0) + + SUBS r5, r7, r5 @ r5 = shiftM = point - s->q_delp + LDR r7, [r4,#40] @ r7 = s->q_seq + RSBLT r5, r5, #0 @ if (shiftM<0) r5 =-shiftM + MOVLT r12,r12,LSL r5 @ r12=mul<<-shiftM + MOVLT r5, #0 @ r5 =shiftM = 0 + MOVGT r14,r14,LSL r5 @ add <<= shiftM + + CMP r7,#0 @ seqMask = (s->q_seq?-1:0) + MVNNE r7,#0 + + CMP r1, #2 + BEQ dm2 + BGT dm3 + CMP r1,#0 @ probably never happens + BLE dm_duff +dm1: + @ r1 = s->dec_type + @ r2 = s->q_bits + @ r3 = s->dim + @ r5 = shiftM + @ r6 = v + @ r7 = seqMask + @ r8 = entry + @ r12= mul + @ r14= add + MOV r0, #1 + RSB r0, r0, r0, LSL r2 @ r0 = mask = (1<q_bits)-1 + MOV r11,#0 @ r11= prev = 0 +dm1_loop: + AND r1, r8, r0 @ r1 = v = entry & mask + MLA r1, r12, r1, r14 @ r1 = (add + mul*v) + MOV r8, r8, LSR r2 @ r8 = entry>>s->q_bits + SUBS r3, r3, #1 + ADD r1, r11,r1, ASR r5 @ r1 = v = prev+((add+mul*v)>>shiftM) + AND r11,r1, r7 @ r11= prev = seqMask & v + STR r1, [r6], #4 @ *v++ = v + BGT dm1_loop + + MOV r0, #0 + LDMFD r13!,{r4-r11,PC} +dm2: + @ r1 = s->dec_type + @ r2 = s->q_bits + @ r3 = s->dim + @ r4 = s + @ r5 = shiftM + @ r6 = v + @ r7 = seqMask + @ r8 = entry + @ r12= mul + @ r14= add + LDR r1, [r4,#44] @ r1 = s->q_pack + LDR r4, [r4,#48] @ r4 = s->q_val + MOV r11,#0 @ r11= prev + MOV r0, #1 + RSB r0, r0, r0, LSL r1 @ r8 = mask = (1<q_pack)-1 + CMP r2,#8 + BGT dm2_hword +dm2_loop: + AND r2, r8, r0 @ r2 = entry & mask + LDRB r2, [r4, r2] @ r2 = v = q->val[entry & mask] + MOV r8, r8, LSR r1 @ r8 = entry>>q_pack + MLA r2, r12,r2, r14 @ r2 = (add+mul*v) + SUBS r3, r3, #1 + ADD r2, r11,r2, ASR r5 @ r2 = v = prev+(add+mul*v)>>shiftM + AND r11,r2, r7 @ r11= prev = seqMask & v + STR r2, [r6], #4 @ *v++ = v + BGT dm2_loop + MOV r0, #0 + LDMFD r13!,{r4-r11,PC} + +dm2_hword: + AND r2, r8, r0 @ r2 = entry & mask + MOV r2, r2, LSL #1 @ r2 = 2*r2 + LDRH r2, [r4, r2] @ r2 = v = q->val[entry & mask] + MOV r8, r8, LSR r1 @ r8 = entry>>q_pack + MLA r2, r12,r2, r14 @ r2 = (add+mul*v) + SUBS r3, r3, #1 + ADD r2, r11,r2, ASR r5 @ r2 = v = prev+(add+mul*v)>>shiftM + AND r11,r2, r7 @ r11= prev = seqMask & v + STR r2, [r6], #4 @ *v++ = v + BGT dm2_hword + MOV r0, #0 + LDMFD r13!,{r4-r11,PC} + +dm3: + @ r1 = s->dec_type + @ r2 = s->q_bits + @ r3 = s->dim + @ r4 = s + @ r5 = shiftM + @ r6 = v + @ r7 = seqMask + @ r8 = entry + @ r12= mul + @ r14= add + LDR r1, [r4,#44] @ r1 = s->q_pack + LDR r4, [r4,#52] @ r4 = s->q_val + CMP r2,#8 + MOV r11,#0 @ r11= prev + MLA r4,r1,r8,r4 @ r4 = ptr = s->q_val+entry*s->q_pack + + BGT dm3_hword +dm3_loop: + LDRB r2, [r4], #1 @ r2 = v = *ptr++ + SUBS r3, r3, #1 + MLA r2, r12,r2, r14 @ r2 = (add+mul*v) + ADD r2, r11,r2, ASR r5 @ r2 = v = prev+(add+mul*v)>>shiftM + AND r11,r2, r7 @ r11= prev = seqMask & v + STR r2, [r6], #4 @ *v++ = v + BGT dm3_loop + MOV r0, #0 + LDMFD r13!,{r4-r11,PC} + +dm3_hword: + LDRH r2, [r4], #2 @ r2 = *ptr++ + SUBS r3, r3, #1 + MLA r2, r12,r2, r14 @ r2 = (add+mul*v) + ADD r2, r11,r2, ASR r5 @ r2 = v = prev+(add+mul*v)>>shiftM + AND r11,r2, r7 @ r11= prev = seqMask & v + STR r2, [r6], #4 @ *v++ = v + BGT dm3_hword + MOV r0, #0 + LDMFD r13!,{r4-r11,PC} + +dm_duff: + MVN r0,#0 + LDMFD r13!,{r4-r11,PC} + +vorbis_book_decodevv_add: + @ r0 = codebook *book + @ r1 = ogg_int32_t **a + @ r2 = long offset + @ r3 = int ch + @ <> = b + @ <> = n + @ <> = point + STMFD r13!,{r4-r11,R14} + LDR r7, [r0, #13*4] @ r7 = used_entries + MOV r9, r0 @ r9 = book + MOV r10,r1 @ r10= 0xa[chptr] chptr=0 + MOV r6, r3 @ r6 = ch + ADD r8, r10,r3, LSL #2 @ r8 = 0xa[ch] + MOV r11,r2 @ r11= offset + CMP r7, #0 @ if (used_entries <= 0) + BLE vbdvva_exit @ exit + LDR r5, [r13,#10*4] @ r5 = n +vbdvva_loop1: + @ r5 = n + @ r6 = ch + @ r8 = 0xa[ch] + @ r9 = book + @ r10= 0xa[chptr] + @ r11= offset + MOV r0, r9 @ r0 = book + LDR r1, [r13,# 9*4] @ r1 = b + LDR r2, [r9, #14*4] @ r2 = v = dec_buf + LDR r3, [r13,#11*4] @ r3 = point + BL decode_map + CMP r0, #0 + BNE vbdvva_fail + + LDR r0, [r9, # 5*4] @ r0 = book->dim + LDR r1, [r9, #14*4] @ r1 = v = dec_buf +vbdvva_loop2: + LDR r2, [r10],#4 @ r2 = a[chptr++] + LDR r12,[r1], #4 @ r1 = v[j++] + CMP r10,r8 @ if (chptr == ch) + SUBEQ r10,r10,r6, LSL #2 @ chptr = 0 + LDR r14,[r2, r11,LSL #2]! @ r2 = 0xa[chptr++][i] r14=[r12] + ADDEQ r11,r11,#1 @ i++ + SUBEQ r5, r5, #1 @ n-- + SUBS r0, r0, #1 @ r0-- + ADD r12,r12,r14 @ r12= a[chptr++][i]+ v[j] + STR r12,[r2] @ r12= a[chptr++][i]+=v[j] + BGT vbdvva_loop2 + CMP r5,#0 + BGT vbdvva_loop1 +vbdvva_exit: + MOV r0, #0 @ return 0 + LDMFD r13!,{r4-r11,PC} +vbdvva_fail: + MVN r0, #0 @ return -1 + LDMFD r13!,{r4-r11,PC} + +_checksum: + @ r0 = ogg_reference *or + @ r1 = bytes + STMFD r13!,{r5-r6,r14} + + LDR r5,=crc_lookup + MOV r14,#0 @ r14= crc_reg = 0 + MOVS r12,r0 + BEQ _cs_end +_cs_loop1: + LDMIA r12,{r0,r2,r3,r12} @ r0 = or->buffer + @ r2 = or->begin + @ r3 = or->length + @ r12= or->next + LDR r0,[r0] @ r0 = or->buffer->data + CMP r1,r3 @ r3 = post = (bytes < or->length ? + MOVLT r3,r1 @ bytes : or->length) + MOVS r6,r3 @ r6 = j = post + BEQ _cs_no_bytes + ADD r0,r0,r2 @ r0 = or->buffer->data + or->begin +_cs_loop2: + LDRB r2, [r0],#1 @ r2 = data[j] + @ stall + @ stall Xscale + EOR r2, r2, r14,LSR #24 @ r2 = (crc_reg>>24)^data[j] + LDR r2, [r5, r2, LSL #2] @ r2 = crc_lkp[(crc_reg>>24)^data[j]] + SUBS r6, r6, #1 @ j-- + @ stall Xscale + EOR r14,r2, r14,LSL #8 @ r14= crc_reg = (crc_reg<<8)^r2 + BGT _cs_loop2 +_cs_no_bytes: + SUBS r1, r1, r3 + CMPNE r12,#0 + BNE _cs_loop1 +_cs_end: + MOV r0,r14 + LDMFD r13!,{r5-r6,PC} + + @ END diff --git a/Tremolo/dsp.c b/Tremolo/dsp.c new file mode 100644 index 0000000..affe73c --- /dev/null +++ b/Tremolo/dsp.c @@ -0,0 +1,306 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: PCM data vector blocking, windowing and dis/reassembly + + ********************************************************************/ + +#include +#include "ogg.h" +#include "mdct.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "misc.h" +#include "window_lookup.h" + +int vorbis_dsp_restart(vorbis_dsp_state *v){ + if(!v)return -1; + { + vorbis_info *vi=v->vi; + codec_setup_info *ci; + + if(!vi)return -1; + ci=vi->codec_setup; + if(!ci)return -1; + + v->out_end=-1; + v->out_begin=-1; + + v->granulepos=-1; + v->sequence=-1; + v->sample_count=-1; + } + return 0; +} + +int vorbis_dsp_init(vorbis_dsp_state *v,vorbis_info *vi){ + int i; + + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + + v->vi=vi; + + v->work=(ogg_int32_t **)_ogg_malloc(vi->channels*sizeof(*v->work)); + v->mdctright=(ogg_int32_t **)_ogg_malloc(vi->channels*sizeof(*v->mdctright)); + for(i=0;ichannels;i++){ + v->work[i]=(ogg_int32_t *)_ogg_calloc(1,(ci->blocksizes[1]>>1)* + sizeof(*v->work[i])); + v->mdctright[i]=(ogg_int32_t *)_ogg_calloc(1,(ci->blocksizes[1]>>2)* + sizeof(*v->mdctright[i])); + } + + v->lW=0; /* previous window size */ + v->W=0; /* current window size */ + + vorbis_dsp_restart(v); + return 0; +} + +vorbis_dsp_state *vorbis_dsp_create(vorbis_info *vi){ + vorbis_dsp_state *v=_ogg_calloc(1,sizeof(*v)); + vorbis_dsp_init(v,vi); + return v; +} + +void vorbis_dsp_clear(vorbis_dsp_state *v){ + int i; + if(v){ + vorbis_info *vi=v->vi; + + if(v->work){ + for(i=0;ichannels;i++) + if(v->work[i])_ogg_free(v->work[i]); + _ogg_free(v->work); + } + if(v->mdctright){ + for(i=0;ichannels;i++) + if(v->mdctright[i])_ogg_free(v->mdctright[i]); + _ogg_free(v->mdctright); + } + } +} + +void vorbis_dsp_destroy(vorbis_dsp_state *v){ + vorbis_dsp_clear(v); + _ogg_free(v); +} + +static LOOKUP_T *_vorbis_window(int left){ + switch(left){ + case 32: + return vwin64; + case 64: + return vwin128; + case 128: + return vwin256; + case 256: + return vwin512; + case 512: + return vwin1024; + case 1024: + return vwin2048; + case 2048: + return vwin4096; +#ifndef LIMIT_TO_64kHz + case 4096: + return vwin8192; +#endif + default: + return(0); + } +} + +/* pcm==0 indicates we just want the pending samples, no more */ +int vorbis_dsp_pcmout(vorbis_dsp_state *v,ogg_int16_t *pcm,int samples){ + vorbis_info *vi=v->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + if(v->out_begin>-1 && v->out_beginout_end){ + int n=v->out_end-v->out_begin; + if(pcm){ + int i; + if(n>samples)n=samples; + for(i=0;ichannels;i++) + mdct_unroll_lap(ci->blocksizes[0],ci->blocksizes[1], + v->lW,v->W,v->work[i],v->mdctright[i], + _vorbis_window(ci->blocksizes[0]>>1), + _vorbis_window(ci->blocksizes[1]>>1), + pcm+i,vi->channels, + v->out_begin,v->out_begin+n); + } + return(n); + } + return(0); +} + +int vorbis_dsp_read(vorbis_dsp_state *v,int s){ + if(s && v->out_begin+s>v->out_end)return(OV_EINVAL); + v->out_begin+=s; + return(0); +} + +long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + oggpack_buffer opb; + int mode; + int modebits=0; + int v=ci->modes; + + oggpack_readinit(&opb,op->packet); + + /* Check the packet type */ + if(oggpack_read(&opb,1)!=0){ + /* Oops. This is not an audio data packet */ + return(OV_ENOTAUDIO); + } + + while(v>1){ + modebits++; + v>>=1; + } + + /* read our mode and pre/post windowsize */ + mode=oggpack_read(&opb,modebits); + if(mode==-1)return(OV_EBADPACKET); + return(ci->blocksizes[ci->mode_param[mode].blockflag]); +} + + +static int ilog(ogg_uint32_t v){ + int ret=0; + if(v)--v; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +int vorbis_dsp_synthesis(vorbis_dsp_state *vd,ogg_packet *op,int decodep){ + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int mode,i; + + oggpack_readinit(&vd->opb,op->packet); + + /* Check the packet type */ + if(oggpack_read(&vd->opb,1)!=0){ + /* Oops. This is not an audio data packet */ + return OV_ENOTAUDIO ; + } + + /* read our mode and pre/post windowsize */ + mode=oggpack_read(&vd->opb,ilog(ci->modes)); + if(mode==-1 || mode>=ci->modes) return OV_EBADPACKET; + + /* shift information we still need from last window */ + vd->lW=vd->W; + vd->W=ci->mode_param[mode].blockflag; + for(i=0;ichannels;i++) + mdct_shift_right(ci->blocksizes[vd->lW],vd->work[i],vd->mdctright[i]); + + if(vd->W){ + int temp; + oggpack_read(&vd->opb,1); + temp=oggpack_read(&vd->opb,1); + if(temp==-1) return OV_EBADPACKET; + } + + /* packet decode and portions of synthesis that rely on only this block */ + if(decodep){ + mapping_inverse(vd,ci->map_param+ci->mode_param[mode].mapping); + + if(vd->out_begin==-1){ + vd->out_begin=0; + vd->out_end=0; + }else{ + vd->out_begin=0; + vd->out_end=ci->blocksizes[vd->lW]/4+ci->blocksizes[vd->W]/4; + } + } + + /* track the frame number... This is for convenience, but also + making sure our last packet doesn't end with added padding. + + This is not foolproof! It will be confused if we begin + decoding at the last page after a seek or hole. In that case, + we don't have a starting point to judge where the last frame + is. For this reason, vorbisfile will always try to make sure + it reads the last two marked pages in proper sequence */ + + /* if we're out of sequence, dump granpos tracking until we sync back up */ + if(vd->sequence==-1 || vd->sequence+1 != op->packetno-3){ + /* out of sequence; lose count */ + vd->granulepos=-1; + vd->sample_count=-1; + } + + vd->sequence=op->packetno; + vd->sequence=vd->sequence-3; + + if(vd->sample_count==-1){ + vd->sample_count=0; + }else{ + vd->sample_count+= + ci->blocksizes[vd->lW]/4+ci->blocksizes[vd->W]/4; + } + + if(vd->granulepos==-1){ + if(op->granulepos!=-1){ /* only set if we have a + position to set to */ + + vd->granulepos=op->granulepos; + + /* is this a short page? */ + if(vd->sample_count>vd->granulepos){ + /* corner case; if this is both the first and last audio page, + then spec says the end is cut, not beginning */ + if(op->e_o_s){ + /* trim the end */ + /* no preceeding granulepos; assume we started at zero (we'd + have to in a short single-page stream) */ + /* granulepos could be -1 due to a seek, but that would result + in a long coun t, not short count */ + + vd->out_end-=(int)(vd->sample_count-vd->granulepos); + }else{ + /* trim the beginning */ + vd->out_begin+=(int)(vd->sample_count-vd->granulepos); + if(vd->out_begin>vd->out_end) + vd->out_begin=vd->out_end; + } + + } + + } + }else{ + vd->granulepos+= + ci->blocksizes[vd->lW]/4+ci->blocksizes[vd->W]/4; + if(op->granulepos!=-1 && vd->granulepos!=op->granulepos){ + + if(vd->granulepos>op->granulepos){ + long extra=(long)(vd->granulepos-op->granulepos); + + if(extra) + if(op->e_o_s){ + /* partial last frame. Strip the extra samples off */ + vd->out_end-=extra; + } /* else {Shouldn't happen *unless* the bitstream is out of + spec. Either way, believe the bitstream } */ + } /* else {Shouldn't happen *unless* the bitstream is out of + spec. Either way, believe the bitstream } */ + vd->granulepos=op->granulepos; + } + } + + return(0); +} diff --git a/Tremolo/floor0.c b/Tremolo/floor0.c new file mode 100644 index 0000000..07a61da --- /dev/null +++ b/Tremolo/floor0.c @@ -0,0 +1,428 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: floor backend 0 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "codebook.h" +#include "misc.h" +#include "os.h" + +#define LSP_FRACBITS 14 +extern const ogg_int32_t FLOOR_fromdB_LOOKUP[]; + +/*************** LSP decode ********************/ + +#include "lsp_lookup.h" + +/* interpolated 1./sqrt(p) where .5 <= a < 1. (.100000... to .111111...) in + 16.16 format + returns in m.8 format */ + +static long ADJUST_SQRT2[2]={8192,5792}; +static inline ogg_int32_t vorbis_invsqlook_i(long a,long e){ + long i=(a&0x7fff)>>(INVSQ_LOOKUP_I_SHIFT-1); + long d=a&INVSQ_LOOKUP_I_MASK; /* 0.10 */ + long val=INVSQ_LOOKUP_I[i]- /* 1.16 */ + ((INVSQ_LOOKUP_IDel[i]*d)>>INVSQ_LOOKUP_I_SHIFT); /* result 1.16 */ + val*=ADJUST_SQRT2[e&1]; + e=(e>>1)+21; + return(val>>e); +} + +/* interpolated lookup based fromdB function, domain -140dB to 0dB only */ +/* a is in n.12 format */ +#ifdef _LOW_ACCURACY_ +static inline ogg_int32_t vorbis_fromdBlook_i(long a){ + if(a>0) return 0x7fffffff; + if(a<(-140<<12)) return 0; + return FLOOR_fromdB_LOOKUP[((a+140)*467)>>20]<<9; +} +#else +static inline ogg_int32_t vorbis_fromdBlook_i(long a){ + if(a>0) return 0x7fffffff; + if(a<(-140<<12)) return 0; + return FLOOR_fromdB_LOOKUP[((a+(140<<12))*467)>>20]; +} +#endif + +/* interpolated lookup based cos function, domain 0 to PI only */ +/* a is in 0.16 format, where 0==0, 2^^16-1==PI, return 0.14 */ +static inline ogg_int32_t vorbis_coslook_i(long a){ + int i=a>>COS_LOOKUP_I_SHIFT; + int d=a&COS_LOOKUP_I_MASK; + return COS_LOOKUP_I[i]- ((d*(COS_LOOKUP_I[i]-COS_LOOKUP_I[i+1]))>> + COS_LOOKUP_I_SHIFT); +} + +/* interpolated half-wave lookup based cos function */ +/* a is in 0.16 format, where 0==0, 2^^16==PI, return .LSP_FRACBITS */ +static inline ogg_int32_t vorbis_coslook2_i(long a){ + int i=a>>COS_LOOKUP_I_SHIFT; + int d=a&COS_LOOKUP_I_MASK; + return ((COS_LOOKUP_I[i]<> + (COS_LOOKUP_I_SHIFT-LSP_FRACBITS+14); +} + +static const ogg_uint16_t barklook[54]={ + 0,51,102,154, 206,258,311,365, + 420,477,535,594, 656,719,785,854, + 926,1002,1082,1166, 1256,1352,1454,1564, + 1683,1812,1953,2107, 2276,2463,2670,2900, + 3155,3440,3756,4106, 4493,4919,5387,5901, + 6466,7094,7798,8599, 9528,10623,11935,13524, + 15453,17775,20517,23667, 27183,31004 +}; + +/* used in init only; interpolate the long way */ +static inline ogg_int32_t toBARK(int n){ + int i; + for(i=0;i<54;i++) + if(n>=barklook[i] && n>17); + } +} + +static const unsigned char MLOOP_1[64]={ + 0,10,11,11, 12,12,12,12, 13,13,13,13, 13,13,13,13, + 14,14,14,14, 14,14,14,14, 14,14,14,14, 14,14,14,14, + 15,15,15,15, 15,15,15,15, 15,15,15,15, 15,15,15,15, + 15,15,15,15, 15,15,15,15, 15,15,15,15, 15,15,15,15, +}; + +static const unsigned char MLOOP_2[64]={ + 0,4,5,5, 6,6,6,6, 7,7,7,7, 7,7,7,7, + 8,8,8,8, 8,8,8,8, 8,8,8,8, 8,8,8,8, + 9,9,9,9, 9,9,9,9, 9,9,9,9, 9,9,9,9, + 9,9,9,9, 9,9,9,9, 9,9,9,9, 9,9,9,9, +}; + +static const unsigned char MLOOP_3[8]={0,1,2,2,3,3,3,3}; + +void vorbis_lsp_to_curve(ogg_int32_t *curve,int n,int ln, + ogg_int32_t *lsp,int m, + ogg_int32_t amp, + ogg_int32_t ampoffset, + ogg_int32_t nyq){ + + /* 0 <= m < 256 */ + + /* set up for using all int later */ + int i; + int ampoffseti=ampoffset*4096; + int ampi=amp; + ogg_int32_t *ilsp=(ogg_int32_t *)alloca(m*sizeof(*ilsp)); + + ogg_uint32_t inyq= (1UL<<31) / toBARK(nyq); + ogg_uint32_t imap= (1UL<<31) / ln; + ogg_uint32_t tBnyq1 = toBARK(nyq)<<1; + + /* Besenham for frequency scale to avoid a division */ + int f=0; + int fdx=n; + int fbase=nyq/fdx; + int ferr=0; + int fdy=nyq-fbase*fdx; + int map=0; + +#ifdef _LOW_ACCURACY_ + ogg_uint32_t nextbark=((tBnyq1<<11)/ln)>>12; +#else + ogg_uint32_t nextbark=MULT31(imap>>1,tBnyq1); +#endif + int nextf=barklook[nextbark>>14]+(((nextbark&0x3fff)* + (barklook[(nextbark>>14)+1]-barklook[nextbark>>14]))>>14); + + /* lsp is in 8.24, range 0 to PI; coslook wants it in .16 0 to 1*/ + for(i=0;i>10)*0x517d)>>14; +#endif + + /* safeguard against a malicious stream */ + if(val<0 || (val>>COS_LOOKUP_I_SHIFT)>=COS_LOOKUP_I_SZ){ + memset(curve,0,sizeof(*curve)*n); + return; + } + + ilsp[i]=vorbis_coslook_i(val); + } + + i=0; + while(i>15); + + +#ifdef _V_LSP_MATH_ASM + lsp_loop_asm(&qi,&pi,&qexp,ilsp,wi,m); + + pi=((pi*pi)>>16); + qi=((qi*qi)>>16); + + if(m&1){ + qexp= qexp*2-28*((m+1)>>1)+m; + pi*=(1<<14)-((wi*wi)>>14); + qi+=pi>>14; + }else{ + qexp= qexp*2-13*m; + + pi*=(1<<14)-wi; + qi*=(1<<14)+wi; + + qi=(qi+pi)>>14; + } + + if(qi&0xffff0000){ /* checks for 1.xxxxxxxxxxxxxxxx */ + qi>>=1; qexp++; + }else + lsp_norm_asm(&qi,&qexp); + +#else + + qi*=labs(ilsp[0]-wi); + pi*=labs(ilsp[1]-wi); + + for(j=3;j>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + + qi=(qi>>shift)*labs(ilsp[j-1]-wi); + pi=(pi>>shift)*labs(ilsp[j]-wi); + qexp+=shift; + } + if(!(shift=MLOOP_1[(pi|qi)>>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + + /* pi,qi normalized collectively, both tracked using qexp */ + + if(m&1){ + /* odd order filter; slightly assymetric */ + /* the last coefficient */ + qi=(qi>>shift)*labs(ilsp[j-1]-wi); + pi=(pi>>shift)<<14; + qexp+=shift; + + if(!(shift=MLOOP_1[(pi|qi)>>25])) + if(!(shift=MLOOP_2[(pi|qi)>>19])) + shift=MLOOP_3[(pi|qi)>>16]; + + pi>>=shift; + qi>>=shift; + qexp+=shift-14*((m+1)>>1); + + pi=((pi*pi)>>16); + qi=((qi*qi)>>16); + qexp=qexp*2+m; + + pi*=(1<<14)-((wi*wi)>>14); + qi+=pi>>14; + + }else{ + /* even order filter; still symmetric */ + + /* p*=p(1-w), q*=q(1+w), let normalization drift because it isn't + worth tracking step by step */ + + pi>>=shift; + qi>>=shift; + qexp+=shift-7*m; + + pi=((pi*pi)>>16); + qi=((qi*qi)>>16); + qexp=qexp*2+m; + + pi*=(1<<14)-wi; + qi*=(1<<14)+wi; + qi=(qi+pi)>>14; + + } + + + /* we've let the normalization drift because it wasn't important; + however, for the lookup, things must be normalized again. We + need at most one right shift or a number of left shifts */ + + if(qi&0xffff0000){ /* checks for 1.xxxxxxxxxxxxxxxx */ + qi>>=1; qexp++; + }else + while(qi && !(qi&0x8000)){ /* checks for 0.0xxxxxxxxxxxxxxx or less*/ + qi<<=1; qexp--; + } + +#endif + + amp=vorbis_fromdBlook_i(ampi* /* n.4 */ + vorbis_invsqlook_i(qi,qexp)- + /* m.8, m+n<=8 */ + ampoffseti); /* 8.12[0] */ + +#ifdef _LOW_ACCURACY_ + amp>>=9; +#endif + curve[i]= MULT31_SHIFT15(curve[i],amp); + + while(++i=fdx){ + ferr-=fdx; + f++; + } + f+=fbase; + + if(f>=nextf)break; + + curve[i]= MULT31_SHIFT15(curve[i],amp); + } + + while(1){ + map++; + + if(map+1>12; +#else + nextbark=MULT31((map+1)*(imap>>1),tBnyq1); +#endif + nextf=barklook[nextbark>>14]+ + (((nextbark&0x3fff)* + (barklook[(nextbark>>14)+1]-barklook[nextbark>>14]))>>14); + if(f<=nextf)break; + + }else{ + nextf=9999999; + break; + } + } + if(map>=ln){ + map=ln-1; /* guard against the approximation */ + nextf=9999999; + } + } +} + +/*************** vorbis decode glue ************/ + +void floor0_free_info(vorbis_info_floor *i){ + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + if(info)_ogg_free(info); +} + +vorbis_info_floor *floor0_info_unpack (vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int j; + + vorbis_info_floor0 *info=(vorbis_info_floor0 *)_ogg_malloc(sizeof(*info)); + info->order=oggpack_read(opb,8); + info->rate=oggpack_read(opb,16); + info->barkmap=oggpack_read(opb,16); + info->ampbits=oggpack_read(opb,6); + info->ampdB=oggpack_read(opb,8); + info->numbooks=oggpack_read(opb,4)+1; + + if(info->order<1)goto err_out; + if(info->rate<1)goto err_out; + if(info->barkmap<1)goto err_out; + + for(j=0;jnumbooks;j++){ + info->books[j]=(char)oggpack_read(opb,8); + if(info->books[j]>=ci->books)goto err_out; + } + + if(oggpack_eop(opb))goto err_out; + return(info); + + err_out: + floor0_free_info(info); + return(NULL); +} + +int floor0_memosize(vorbis_info_floor *i){ + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + return info->order+1; +} + +ogg_int32_t *floor0_inverse1(vorbis_dsp_state *vd,vorbis_info_floor *i, + ogg_int32_t *lsp){ + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + int j,k; + + int ampraw=oggpack_read(&vd->opb,info->ampbits); + if(ampraw>0){ /* also handles the -1 out of data case */ + long maxval=(1<ampbits)-1; + int amp=((ampraw*info->ampdB)<<4)/maxval; + int booknum=oggpack_read(&vd->opb,_ilog(info->numbooks)); + + if(booknum!=-1 && booknumnumbooks){ /* be paranoid */ + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + codebook *b=ci->book_param+info->books[booknum]; + ogg_int32_t last=0; + + for(j=0;jorder;j+=b->dim) + if(vorbis_book_decodev_set(b,lsp+j,&vd->opb,b->dim,-24)==-1)goto eop; + for(j=0;jorder;){ + for(k=0;kdim;k++,j++)lsp[j]+=last; + last=lsp[j-1]; + } + + lsp[info->order]=amp; + return(lsp); + } + } + eop: + return(NULL); +} + +int floor0_inverse2(vorbis_dsp_state *vd,vorbis_info_floor *i, + ogg_int32_t *lsp,ogg_int32_t *out){ + vorbis_info_floor0 *info=(vorbis_info_floor0 *)i; + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + + if(lsp){ + ogg_int32_t amp=lsp[info->order]; + + /* take the coefficients back to a spectral envelope curve */ + vorbis_lsp_to_curve(out,ci->blocksizes[vd->W]/2,info->barkmap, + lsp,info->order,amp,info->ampdB, + info->rate>>1); + return(1); + } + memset(out,0,sizeof(*out)*ci->blocksizes[vd->W]/2); + return(0); +} + diff --git a/Tremolo/floor1.c b/Tremolo/floor1.c new file mode 100644 index 0000000..e3c7e29 --- /dev/null +++ b/Tremolo/floor1.c @@ -0,0 +1,386 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: floor backend 1 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "codebook.h" +#include "misc.h" + +extern const ogg_int32_t FLOOR_fromdB_LOOKUP[]; +#define floor1_rangedB 140 /* floor 1 fixed at -140dB to 0dB range */ +#define VIF_POSIT 63 + +/***********************************************/ + +void floor1_free_info(vorbis_info_floor *i){ + vorbis_info_floor1 *info=(vorbis_info_floor1 *)i; + if(info){ + if(info->class)_ogg_free(info->class); + if(info->partitionclass)_ogg_free(info->partitionclass); + if(info->postlist)_ogg_free(info->postlist); + if(info->forward_index)_ogg_free(info->forward_index); + if(info->hineighbor)_ogg_free(info->hineighbor); + if(info->loneighbor)_ogg_free(info->loneighbor); + memset(info,0,sizeof(*info)); + _ogg_free(info); + } +} + +static int ilog(unsigned int v){ + int ret=0; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +static void mergesort(char *index,ogg_uint16_t *vals,ogg_uint16_t n){ + ogg_uint16_t i,j; + char *temp,*A=index,*B=_ogg_malloc(n*sizeof(*B)); + + for(i=1;icodec_setup; + int j,k,count=0,maxclass=-1,rangebits; + + vorbis_info_floor1 *info=(vorbis_info_floor1 *)_ogg_calloc(1,sizeof(*info)); + /* read partitions */ + info->partitions=oggpack_read(opb,5); /* only 0 to 31 legal */ + info->partitionclass= + (char *)_ogg_malloc(info->partitions*sizeof(*info->partitionclass)); + for(j=0;jpartitions;j++){ + info->partitionclass[j]=(char)oggpack_read(opb,4); /* only 0 to 15 legal */ + if(maxclasspartitionclass[j])maxclass=info->partitionclass[j]; + } + + /* read partition classes */ + info->class= + (floor1class *)_ogg_malloc((maxclass+1)*sizeof(*info->class)); + for(j=0;jclass[j].class_dim=(char)oggpack_read(opb,3)+1; /* 1 to 8 */ + info->class[j].class_subs=(char)oggpack_read(opb,2); /* 0,1,2,3 bits */ + if(oggpack_eop(opb)<0) goto err_out; + if(info->class[j].class_subs) + info->class[j].class_book=(unsigned char)oggpack_read(opb,8); + else + info->class[j].class_book=0; + if(info->class[j].class_book>=ci->books)goto err_out; + for(k=0;k<(1<class[j].class_subs);k++){ + info->class[j].class_subbook[k]=(unsigned char)(oggpack_read(opb,8)-1); + if(info->class[j].class_subbook[k]>=ci->books && + info->class[j].class_subbook[k]!=0xff)goto err_out; + } + } + + /* read the post list */ + info->mult=oggpack_read(opb,2)+1; /* only 1,2,3,4 legal now */ + rangebits=oggpack_read(opb,4); + + for(j=0,k=0;jpartitions;j++) + count+=info->class[info->partitionclass[j]].class_dim; + info->postlist= + (ogg_uint16_t *)_ogg_malloc((count+2)*sizeof(*info->postlist)); + info->forward_index= + (char *)_ogg_malloc((count+2)*sizeof(*info->forward_index)); + info->loneighbor= + (char *)_ogg_malloc(count*sizeof(*info->loneighbor)); + info->hineighbor= + (char *)_ogg_malloc(count*sizeof(*info->hineighbor)); + + count=0; + for(j=0,k=0;jpartitions;j++){ + count+=info->class[info->partitionclass[j]].class_dim; + for(;kpostlist[k+2]=(ogg_uint16_t)oggpack_read(opb,rangebits); + if(t>=(1<postlist[0]=0; + info->postlist[1]=1<posts=count+2; + + /* also store a sorted position index */ + for(j=0;jposts;j++)info->forward_index[j]=j; + mergesort(info->forward_index,info->postlist,info->posts); + + /* discover our neighbors for decode where we don't use fit flags + (that would push the neighbors outward) */ + for(j=0;jposts-2;j++){ + int lo=0; + int hi=1; + int lx=0; + int hx=info->postlist[1]; + int currentx=info->postlist[j+2]; + for(k=0;kpostlist[k]; + if(x>lx && xcurrentx){ + hi=k; + hx=x; + } + } + info->loneighbor[j]=lo; + info->hineighbor[j]=hi; + } + + return(info); + + err_out: + floor1_free_info(info); + return(NULL); +} + +#ifdef ONLY_C +static +#endif +int render_point(int x0,int x1,int y0,int y1,int x){ + y0&=0x7fff; /* mask off flag */ + y1&=0x7fff; + + { + int dy=y1-y0; + int adx=x1-x0; + int ady=abs(dy); + int err=ady*(x-x0); + + int off=err/adx; + if(dy<0)return(y0-off); + return(y0+off); + } +} + +#ifndef ONLY_C +void render_lineARM(int n, ogg_int32_t *d,const ogg_int32_t *floor, int base, int err, int adx, int ady); +#endif + +static void render_line(int n,int x0,int x1,int y0,int y1,ogg_int32_t *d){ + int dy; + int adx; + int ady; + int base; + int err; + const ogg_int32_t *floor; + + if(n>x1)n=x1; + n -= x0; + if (n <= 0) + return; + dy=y1-y0; + adx=x1-x0; + ady=abs(dy); + base=dy/adx; + err=adx-1; + floor=&FLOOR_fromdB_LOOKUP[y0]; + d += x0; + ady-=abs(base*adx); + + /* We should add base each time, and then: + * if dy >=0 we occasionally add 1 + * else occasionally subtract 1. + * As an optimisation we say that if dy <0 we make base 1 smaller. + * Then we need to add 1 occassionally, rather than subtract 1 - but we + * need to add 1 in all the cases when we wouldn't have done so before. + * Previously we'd have added 1 (100*ady/adx)% of the time. Now we want + * to do so (100*(adx-ady)/adx)% of the time. + */ + if (dy < 0){ + base--; + ady = adx-ady; + err = 0; + } + + //if(x0); +#else + render_lineARM(n,d,floor,base,err,adx,ady); +#endif +} + +int floor1_memosize(vorbis_info_floor *i){ + vorbis_info_floor1 *info=(vorbis_info_floor1 *)i; + return info->posts; +} + +static int quant_look[4]={256,128,86,64}; + +ogg_int32_t *floor1_inverse1(vorbis_dsp_state *vd,vorbis_info_floor *in, + ogg_int32_t *fit_value){ + vorbis_info_floor1 *info=(vorbis_info_floor1 *)in; + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + + int i,j,k; + codebook *books=ci->book_param; + int quant_q=quant_look[info->mult-1]; + + /* unpack wrapped/predicted values from stream */ + if(oggpack_read(&vd->opb,1)==1){ + fit_value[0]=oggpack_read(&vd->opb,ilog(quant_q-1)); + fit_value[1]=oggpack_read(&vd->opb,ilog(quant_q-1)); + + /* partition by partition */ + /* partition by partition */ + for(i=0,j=2;ipartitions;i++){ + int classv=info->partitionclass[i]; + int cdim=info->class[classv].class_dim; + int csubbits=info->class[classv].class_subs; + int csub=1<class[classv].class_book,&vd->opb); + + if(cval==-1)goto eop; + } + + for(k=0;kclass[classv].class_subbook[cval&(csub-1)]; + cval>>=csubbits; + if(book!=0xff){ + if((fit_value[j+k]=vorbis_book_decode(books+book,&vd->opb))==-1) + goto eop; + }else{ + fit_value[j+k]=0; + } + } + j+=cdim; + } + + /* unwrap positive values and reconsitute via linear interpolation */ + for(i=2;iposts;i++){ + int predicted=render_point(info->postlist[info->loneighbor[i-2]], + info->postlist[info->hineighbor[i-2]], + fit_value[info->loneighbor[i-2]], + fit_value[info->hineighbor[i-2]], + info->postlist[i]); + int hiroom=quant_q-predicted; + int loroom=predicted; + int room=(hiroom=room){ + if(hiroom>loroom){ + val = val-loroom; + }else{ + val = -1-(val-hiroom); + } + }else{ + if(val&1){ + val= -((val+1)>>1); + }else{ + val>>=1; + } + } + + fit_value[i]=val+predicted; + fit_value[info->loneighbor[i-2]]&=0x7fff; + fit_value[info->hineighbor[i-2]]&=0x7fff; + + }else{ + fit_value[i]=predicted|0x8000; + } + + } + + return(fit_value); + } + eop: + return(NULL); +} + +int floor1_inverse2(vorbis_dsp_state *vd,vorbis_info_floor *in, + ogg_int32_t *fit_value,ogg_int32_t *out){ + vorbis_info_floor1 *info=(vorbis_info_floor1 *)in; + + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + int n=ci->blocksizes[vd->W]/2; + int j; + + if(fit_value){ + /* render the lines */ + int hx=0; + int lx=0; + int ly=fit_value[0]*info->mult; + for(j=1;jposts;j++){ + int current=info->forward_index[j]; + int hy=fit_value[current]&0x7fff; + if(hy==fit_value[current]){ + + hy*=info->mult; + hx=info->postlist[current]; + + render_line(n,lx,hx,ly,hy,out); + + lx=hx; + ly=hy; + } + } + for(j=hx;j = err + @ <> = adx + @ <> = ady + MOV r12,r13 + STMFD r13!,{r4-r6,r11,r14} + LDMFD r12,{r11,r12,r14} @ r11 = err + @ r12 = adx + @ r14 = ady +rl_loop: + LDR r4,[r1] @ r4 = *d + LDR r5,[r2],r3,LSL #2 @ r5 = *floor r2 = floor+base + SUBS r11,r11,r14 @ err -= ady + ADDLT r11,r11,r12 @ if (err < 0) err+=adx + SMULL r6, r5, r4, r5 @ (r6,r5) = *d * *floor + ADDLT r2, r2, #4 @ floor+=1 + MOVS r6, r6, LSR #15 + ADC r5, r6, r5, LSL #17 @ r5 = MULT31_SHIFT15 + STR r5,[r1],#4 + SUBS r0, r0, #1 + BGT rl_loop + + LDMFD r13!,{r4-r6,r11,PC} + + @ END diff --git a/Tremolo/floor1LARM.s b/Tremolo/floor1LARM.s new file mode 100644 index 0000000..6b719a1 --- /dev/null +++ b/Tremolo/floor1LARM.s @@ -0,0 +1,35 @@ +@ Tremolo library +@ Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd + + .text + + .global render_lineARM + +render_lineARM: + @ r0 = n + @ r1 = d + @ r2 = floor + @ r3 = base + @ <> = err + @ <> = adx + @ <> = ady + MOV r12,r13 + STMFD r13!,{r4-r6,r11,r14} + LDMFD r12,{r11,r12,r14} @ r11 = err + @ r12 = adx + @ r14 = ady +rl_loop: + LDR r4, [r1] @ r4 = *d + LDR r5, [r2], r3,LSL #2 @ r5 = *floor r2 = floor+base + SUBS r11,r11,r14 @ err -= ady + MOV r4, r4, ASR #6 + MUL r5, r4, r5 @ r5 = MULT31_SHIFT15 + ADDLT r11,r11,r12 @ if (err < 0) err+=adx + ADDLT r2, r2, #4 @ floor+=1 + SUBS r0, r0, #1 + STR r5, [r1], #4 + BGT rl_loop + + LDMFD r13!,{r4-r6,r11,PC} + + @ END diff --git a/Tremolo/floor_lookup.c b/Tremolo/floor_lookup.c new file mode 100644 index 0000000..be0554e --- /dev/null +++ b/Tremolo/floor_lookup.c @@ -0,0 +1,92 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: floor dB lookup + + ********************************************************************/ + +#include "os.h" + +#ifdef _LOW_ACCURACY_ +# define XdB(n) ((((n)>>8)+1)>>1) +#else +# define XdB(n) (n) +#endif + +const ogg_int32_t FLOOR_fromdB_LOOKUP[256]={ + XdB(0x000000e5), XdB(0x000000f4), XdB(0x00000103), XdB(0x00000114), + XdB(0x00000126), XdB(0x00000139), XdB(0x0000014e), XdB(0x00000163), + XdB(0x0000017a), XdB(0x00000193), XdB(0x000001ad), XdB(0x000001c9), + XdB(0x000001e7), XdB(0x00000206), XdB(0x00000228), XdB(0x0000024c), + XdB(0x00000272), XdB(0x0000029b), XdB(0x000002c6), XdB(0x000002f4), + XdB(0x00000326), XdB(0x0000035a), XdB(0x00000392), XdB(0x000003cd), + XdB(0x0000040c), XdB(0x00000450), XdB(0x00000497), XdB(0x000004e4), + XdB(0x00000535), XdB(0x0000058c), XdB(0x000005e8), XdB(0x0000064a), + XdB(0x000006b3), XdB(0x00000722), XdB(0x00000799), XdB(0x00000818), + XdB(0x0000089e), XdB(0x0000092e), XdB(0x000009c6), XdB(0x00000a69), + XdB(0x00000b16), XdB(0x00000bcf), XdB(0x00000c93), XdB(0x00000d64), + XdB(0x00000e43), XdB(0x00000f30), XdB(0x0000102d), XdB(0x0000113a), + XdB(0x00001258), XdB(0x0000138a), XdB(0x000014cf), XdB(0x00001629), + XdB(0x0000179a), XdB(0x00001922), XdB(0x00001ac4), XdB(0x00001c82), + XdB(0x00001e5c), XdB(0x00002055), XdB(0x0000226f), XdB(0x000024ac), + XdB(0x0000270e), XdB(0x00002997), XdB(0x00002c4b), XdB(0x00002f2c), + XdB(0x0000323d), XdB(0x00003581), XdB(0x000038fb), XdB(0x00003caf), + XdB(0x000040a0), XdB(0x000044d3), XdB(0x0000494c), XdB(0x00004e10), + XdB(0x00005323), XdB(0x0000588a), XdB(0x00005e4b), XdB(0x0000646b), + XdB(0x00006af2), XdB(0x000071e5), XdB(0x0000794c), XdB(0x0000812e), + XdB(0x00008993), XdB(0x00009283), XdB(0x00009c09), XdB(0x0000a62d), + XdB(0x0000b0f9), XdB(0x0000bc79), XdB(0x0000c8b9), XdB(0x0000d5c4), + XdB(0x0000e3a9), XdB(0x0000f274), XdB(0x00010235), XdB(0x000112fd), + XdB(0x000124dc), XdB(0x000137e4), XdB(0x00014c29), XdB(0x000161bf), + XdB(0x000178bc), XdB(0x00019137), XdB(0x0001ab4a), XdB(0x0001c70e), + XdB(0x0001e4a1), XdB(0x0002041f), XdB(0x000225aa), XdB(0x00024962), + XdB(0x00026f6d), XdB(0x000297f0), XdB(0x0002c316), XdB(0x0002f109), + XdB(0x000321f9), XdB(0x00035616), XdB(0x00038d97), XdB(0x0003c8b4), + XdB(0x000407a7), XdB(0x00044ab2), XdB(0x00049218), XdB(0x0004de23), + XdB(0x00052f1e), XdB(0x0005855c), XdB(0x0005e135), XdB(0x00064306), + XdB(0x0006ab33), XdB(0x00071a24), XdB(0x0007904b), XdB(0x00080e20), + XdB(0x00089422), XdB(0x000922da), XdB(0x0009bad8), XdB(0x000a5cb6), + XdB(0x000b091a), XdB(0x000bc0b1), XdB(0x000c8436), XdB(0x000d5471), + XdB(0x000e3233), XdB(0x000f1e5f), XdB(0x001019e4), XdB(0x001125c1), + XdB(0x00124306), XdB(0x001372d5), XdB(0x0014b663), XdB(0x00160ef7), + XdB(0x00177df0), XdB(0x001904c1), XdB(0x001aa4f9), XdB(0x001c603d), + XdB(0x001e384f), XdB(0x00202f0f), XdB(0x0022467a), XdB(0x002480b1), + XdB(0x0026dff7), XdB(0x002966b3), XdB(0x002c1776), XdB(0x002ef4fc), + XdB(0x0032022d), XdB(0x00354222), XdB(0x0038b828), XdB(0x003c67c2), + XdB(0x004054ae), XdB(0x004482e8), XdB(0x0048f6af), XdB(0x004db488), + XdB(0x0052c142), XdB(0x005821ff), XdB(0x005ddc33), XdB(0x0063f5b0), + XdB(0x006a74a7), XdB(0x00715faf), XdB(0x0078bdce), XdB(0x0080967f), + XdB(0x0088f1ba), XdB(0x0091d7f9), XdB(0x009b5247), XdB(0x00a56a41), + XdB(0x00b02a27), XdB(0x00bb9ce2), XdB(0x00c7ce12), XdB(0x00d4ca17), + XdB(0x00e29e20), XdB(0x00f15835), XdB(0x0101074b), XdB(0x0111bb4e), + XdB(0x01238531), XdB(0x01367704), XdB(0x014aa402), XdB(0x016020a7), + XdB(0x017702c3), XdB(0x018f6190), XdB(0x01a955cb), XdB(0x01c4f9cf), + XdB(0x01e269a8), XdB(0x0201c33b), XdB(0x0223265a), XdB(0x0246b4ea), + XdB(0x026c9302), XdB(0x0294e716), XdB(0x02bfda13), XdB(0x02ed9793), + XdB(0x031e4e09), XdB(0x03522ee4), XdB(0x03896ed0), XdB(0x03c445e2), + XdB(0x0402efd6), XdB(0x0445ac4b), XdB(0x048cbefc), XdB(0x04d87013), + XdB(0x05290c67), XdB(0x057ee5ca), XdB(0x05da5364), XdB(0x063bb204), + XdB(0x06a36485), XdB(0x0711d42b), XdB(0x0787710e), XdB(0x0804b299), + XdB(0x088a17ef), XdB(0x0918287e), XdB(0x09af747c), XdB(0x0a50957e), + XdB(0x0afc2f19), XdB(0x0bb2ef7f), XdB(0x0c759034), XdB(0x0d44d6ca), + XdB(0x0e2195bc), XdB(0x0f0cad0d), XdB(0x10070b62), XdB(0x1111aeea), + XdB(0x122da66c), XdB(0x135c120f), XdB(0x149e24d9), XdB(0x15f525b1), + XdB(0x176270e3), XdB(0x18e7794b), XdB(0x1a85c9ae), XdB(0x1c3f06d1), + XdB(0x1e14f07d), XdB(0x200963d7), XdB(0x221e5ccd), XdB(0x2455f870), + XdB(0x26b2770b), XdB(0x29363e2b), XdB(0x2be3db5c), XdB(0x2ebe06b6), + XdB(0x31c7a55b), XdB(0x3503ccd4), XdB(0x3875c5aa), XdB(0x3c210f44), + XdB(0x4009632b), XdB(0x4432b8cf), XdB(0x48a149bc), XdB(0x4d59959e), + XdB(0x52606733), XdB(0x57bad899), XdB(0x5d6e593a), XdB(0x6380b298), + XdB(0x69f80e9a), XdB(0x70dafda8), XdB(0x78307d76), XdB(0x7fffffff), +}; + diff --git a/Tremolo/framing.c b/Tremolo/framing.c new file mode 100644 index 0000000..377269a --- /dev/null +++ b/Tremolo/framing.c @@ -0,0 +1,1149 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: decode Ogg streams back into raw packets + + note: The CRC code is directly derived from public domain code by + Ross Williams (ross@guest.adelaide.edu.au). See docs/framing.html + for details. + + ********************************************************************/ + +#include +#include +#include "ogg.h" +#include "misc.h" + + +/* A complete description of Ogg framing exists in docs/framing.html */ + +/* basic, centralized Ogg memory management based on linked lists of + references to refcounted memory buffers. References and buffers + are both recycled. Buffers are passed around and consumed in + reference form. */ + +static ogg_buffer_state *ogg_buffer_create(void){ + ogg_buffer_state *bs=_ogg_calloc(1,sizeof(*bs)); + return bs; +} + +/* destruction is 'lazy'; there may be memory references outstanding, + and yanking the buffer state out from underneath would be + antisocial. Dealloc what is currently unused and have + _release_one watch for the stragglers to come in. When they do, + finish destruction. */ + +/* call the helper while holding lock */ +static void _ogg_buffer_destroy(ogg_buffer_state *bs){ + ogg_buffer *bt; + ogg_reference *rt; + + if(bs->shutdown){ + + bt=bs->unused_buffers; + rt=bs->unused_references; + + while(bt){ + ogg_buffer *b=bt; + bt=b->ptr.next; + if(b->data)_ogg_free(b->data); + _ogg_free(b); + } + bs->unused_buffers=0; + while(rt){ + ogg_reference *r=rt; + rt=r->next; + _ogg_free(r); + } + bs->unused_references=0; + + if(!bs->outstanding) + _ogg_free(bs); + + } +} + +static void ogg_buffer_destroy(ogg_buffer_state *bs){ + bs->shutdown=1; + _ogg_buffer_destroy(bs); +} + +static ogg_buffer *_fetch_buffer(ogg_buffer_state *bs,long bytes){ + ogg_buffer *ob; + bs->outstanding++; + + /* do we have an unused buffer sitting in the pool? */ + if(bs->unused_buffers){ + ob=bs->unused_buffers; + bs->unused_buffers=ob->ptr.next; + + /* if the unused buffer is too small, grow it */ + if(ob->sizedata=_ogg_realloc(ob->data,bytes); + ob->size=bytes; + } + }else{ + /* allocate a new buffer */ + ob=_ogg_malloc(sizeof(*ob)); + ob->data=_ogg_malloc(bytes<16?16:bytes); + ob->size=bytes; + } + + ob->refcount=1; + ob->ptr.owner=bs; + return ob; +} + +static ogg_reference *_fetch_ref(ogg_buffer_state *bs){ + ogg_reference *or; + bs->outstanding++; + + /* do we have an unused reference sitting in the pool? */ + if(bs->unused_references){ + or=bs->unused_references; + bs->unused_references=or->next; + }else{ + /* allocate a new reference */ + or=_ogg_malloc(sizeof(*or)); + } + + or->begin=0; + or->length=0; + or->next=0; + return or; +} + +/* fetch a reference pointing to a fresh, initially continguous buffer + of at least [bytes] length */ +static ogg_reference *ogg_buffer_alloc(ogg_buffer_state *bs,long bytes){ + ogg_buffer *ob=_fetch_buffer(bs,bytes); + ogg_reference *or=_fetch_ref(bs); + or->buffer=ob; + return or; +} + +/* enlarge the data buffer in the current link */ +static void ogg_buffer_realloc(ogg_reference *or,long bytes){ + ogg_buffer *ob=or->buffer; + + /* if the unused buffer is too small, grow it */ + if(ob->sizedata=_ogg_realloc(ob->data,bytes); + ob->size=bytes; + } +} + +static void _ogg_buffer_mark_one(ogg_reference *or){ + or->buffer->refcount++; +} + +/* increase the refcount of the buffers to which the reference points */ +static void ogg_buffer_mark(ogg_reference *or){ + while(or){ + _ogg_buffer_mark_one(or); + or=or->next; + } +} + +/* duplicate a reference (pointing to the same actual buffer memory) + and increment buffer refcount. If the desired segment is zero + length, a zero length ref is returned. */ +static ogg_reference *ogg_buffer_sub(ogg_reference *or,long length){ + ogg_reference *ret=0,*head=0; + + /* duplicate the reference chain; increment refcounts */ + while(or && length){ + ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); + if(head) + head->next=temp; + else + ret=temp; + head=temp; + head->buffer=or->buffer; + head->begin=or->begin; + head->length=length; + if(head->length>or->length) + head->length=or->length; + + length-=head->length; + or=or->next; + } + + ogg_buffer_mark(ret); + return ret; +} + +ogg_reference *ogg_buffer_dup(ogg_reference *or){ + ogg_reference *ret=0,*head=0; + /* duplicate the reference chain; increment refcounts */ + while(or){ + ogg_reference *temp=_fetch_ref(or->buffer->ptr.owner); + if(head) + head->next=temp; + else + ret=temp; + head=temp; + head->buffer=or->buffer; + head->begin=or->begin; + head->length=or->length; + or=or->next; + } + + ogg_buffer_mark(ret); + return ret; +} + +/* split a reference into two references; 'return' is a reference to + the buffer preceeding pos and 'head'/'tail' are the buffer past the + split. If pos is at or past the end of the passed in segment, + 'head/tail' are NULL */ +static ogg_reference *ogg_buffer_split(ogg_reference **tail, + ogg_reference **head,long pos){ + + /* walk past any preceeding fragments to one of: + a) the exact boundary that seps two fragments + b) the fragment that needs split somewhere in the middle */ + ogg_reference *ret=*tail; + ogg_reference *or=*tail; + + while(or && pos>or->length){ + pos-=or->length; + or=or->next; + } + + if(!or || pos==0){ + + return 0; + + }else{ + + if(pos>=or->length){ + /* exact split, or off the end? */ + if(or->next){ + + /* a split */ + *tail=or->next; + or->next=0; + + }else{ + + /* off or at the end */ + *tail=*head=0; + + } + }else{ + + /* split within a fragment */ + long lengthA=pos; + long beginB=or->begin+pos; + long lengthB=or->length-pos; + + /* make a new reference to tail the second piece */ + *tail=_fetch_ref(or->buffer->ptr.owner); + + (*tail)->buffer=or->buffer; + (*tail)->begin=beginB; + (*tail)->length=lengthB; + (*tail)->next=or->next; + _ogg_buffer_mark_one(*tail); + if(head && or==*head)*head=*tail; + + /* update the first piece */ + or->next=0; + or->length=lengthA; + + } + } + return ret; +} + +static void ogg_buffer_release_one(ogg_reference *or){ + ogg_buffer *ob=or->buffer; + ogg_buffer_state *bs=ob->ptr.owner; + + ob->refcount--; + if(ob->refcount==0){ + bs->outstanding--; /* for the returned buffer */ + ob->ptr.next=bs->unused_buffers; + bs->unused_buffers=ob; + } + + bs->outstanding--; /* for the returned reference */ + or->next=bs->unused_references; + bs->unused_references=or; + + _ogg_buffer_destroy(bs); /* lazy cleanup (if needed) */ + +} + +/* release the references, decrease the refcounts of buffers to which + they point, release any buffers with a refcount that drops to zero */ +static void ogg_buffer_release(ogg_reference *or){ + while(or){ + ogg_reference *next=or->next; + ogg_buffer_release_one(or); + or=next; + } +} + +static ogg_reference *ogg_buffer_pretruncate(ogg_reference *or,long pos){ + /* release preceeding fragments we don't want */ + while(or && pos>=or->length){ + ogg_reference *next=or->next; + pos-=or->length; + ogg_buffer_release_one(or); + or=next; + } + if (or) { + or->begin+=pos; + or->length-=pos; + } + return or; +} + +static ogg_reference *ogg_buffer_walk(ogg_reference *or){ + if(!or)return NULL; + while(or->next){ + or=or->next; + } + return(or); +} + +/* *head is appended to the front end (head) of *tail; both continue to + be valid pointers, with *tail at the tail and *head at the head */ +static ogg_reference *ogg_buffer_cat(ogg_reference *tail, ogg_reference *head){ + if(!tail)return head; + + while(tail->next){ + tail=tail->next; + } + tail->next=head; + return ogg_buffer_walk(head); +} + +static void _positionB(oggbyte_buffer *b,int pos){ + if(pospos){ + /* start at beginning, scan forward */ + b->ref=b->baseref; + b->pos=0; + b->end=b->pos+b->ref->length; + b->ptr=b->ref->buffer->data+b->ref->begin; + } +} + +static void _positionF(oggbyte_buffer *b,int pos){ + /* scan forward for position */ + while(pos>=b->end){ + /* just seek forward */ + b->pos+=b->ref->length; + b->ref=b->ref->next; + b->end=b->ref->length+b->pos; + b->ptr=b->ref->buffer->data+b->ref->begin; + } +} + +static int oggbyte_init(oggbyte_buffer *b,ogg_reference *or){ + memset(b,0,sizeof(*b)); + if(or){ + b->ref=b->baseref=or; + b->pos=0; + b->end=b->ref->length; + b->ptr=b->ref->buffer->data+b->ref->begin; + return 0; + }else + return -1; +} + +static void oggbyte_set4(oggbyte_buffer *b,ogg_uint32_t val,int pos){ + int i; + _positionB(b,pos); + for(i=0;i<4;i++){ + _positionF(b,pos); + b->ptr[pos-b->pos]=val; + val>>=8; + ++pos; + } +} + +static unsigned char oggbyte_read1(oggbyte_buffer *b,int pos){ + _positionB(b,pos); + _positionF(b,pos); + return b->ptr[pos-b->pos]; +} + +static ogg_uint32_t oggbyte_read4(oggbyte_buffer *b,int pos){ + ogg_uint32_t ret; + _positionB(b,pos); + _positionF(b,pos); + ret=b->ptr[pos-b->pos]; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<8; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<16; + _positionF(b,++pos); + ret|=b->ptr[pos-b->pos]<<24; + return ret; +} + +static ogg_int64_t oggbyte_read8(oggbyte_buffer *b,int pos){ + ogg_int64_t ret; + unsigned char t[7]; + int i; + _positionB(b,pos); + for(i=0;i<7;i++){ + _positionF(b,pos); + t[i]=b->ptr[pos++ -b->pos]; + } + + _positionF(b,pos); + ret=b->ptr[pos-b->pos]; + + for(i=6;i>=0;--i) + ret= ret<<8 | t[i]; + + return ret; +} + +/* Now we get to the actual framing code */ + +int ogg_page_version(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return -1; + return oggbyte_read1(&ob,4); +} + +int ogg_page_continued(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return -1; + return oggbyte_read1(&ob,5)&0x01; +} + +int ogg_page_bos(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return -1; + return oggbyte_read1(&ob,5)&0x02; +} + +int ogg_page_eos(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return -1; + return oggbyte_read1(&ob,5)&0x04; +} + +ogg_int64_t ogg_page_granulepos(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return -1; + return oggbyte_read8(&ob,6); +} + +ogg_uint32_t ogg_page_serialno(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header)) return 0xffffffffUL; + return oggbyte_read4(&ob,14); +} + +ogg_uint32_t ogg_page_pageno(ogg_page *og){ + oggbyte_buffer ob; + if(oggbyte_init(&ob,og->header))return 0xffffffffUL; + return oggbyte_read4(&ob,18); +} + +/* returns the number of packets that are completed on this page (if + the leading packet is begun on a previous page, but ends on this + page, it's counted */ + +/* NOTE: +If a page consists of a packet begun on a previous page, and a new +packet begun (but not completed) on this page, the return will be: + ogg_page_packets(page) ==1, + ogg_page_continued(page) !=0 + +If a page happens to be a single packet that was begun on a +previous page, and spans to the next page (in the case of a three or +more page packet), the return will be: + ogg_page_packets(page) ==0, + ogg_page_continued(page) !=0 +*/ + +int ogg_page_packets(ogg_page *og){ + int i; + int n; + int count=0; + oggbyte_buffer ob; + oggbyte_init(&ob,og->header); + + n=oggbyte_read1(&ob,26); + for(i=0;ibufferpool=ogg_buffer_create(); +} + +ogg_sync_state *ogg_sync_create(void){ + ogg_sync_state *oy=_ogg_calloc(1,sizeof(*oy)); + memset(oy,0,sizeof(*oy)); + oy->bufferpool=ogg_buffer_create(); + return oy; +} + +int ogg_sync_clear(ogg_sync_state *oy){ + if(oy){ + ogg_sync_reset(oy); + ogg_buffer_destroy(oy->bufferpool); + memset(oy,0,sizeof(*oy)); + } + return OGG_SUCCESS; +} + +int ogg_sync_destroy(ogg_sync_state *oy){ + if(oy){ + ogg_sync_reset(oy); + ogg_buffer_destroy(oy->bufferpool); + memset(oy,0,sizeof(*oy)); + _ogg_free(oy); + } + return OGG_SUCCESS; +} + +unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long bytes){ + + /* [allocate and] expose a buffer for data submission. + + If there is no head fragment + allocate one and expose it + else + if the current head fragment has sufficient unused space + expose it + else + if the current head fragment is unused + resize and expose it + else + allocate new fragment and expose it + */ + + /* base case; fifo uninitialized */ + if(!oy->fifo_head){ + oy->fifo_head=oy->fifo_tail=ogg_buffer_alloc(oy->bufferpool,bytes); + return oy->fifo_head->buffer->data; + } + + /* space left in current fragment case */ + if(oy->fifo_head->buffer->size- + oy->fifo_head->length- + oy->fifo_head->begin >= bytes) + return oy->fifo_head->buffer->data+ + oy->fifo_head->length+oy->fifo_head->begin; + + /* current fragment is unused, but too small */ + if(!oy->fifo_head->length){ + ogg_buffer_realloc(oy->fifo_head,bytes); + return oy->fifo_head->buffer->data+oy->fifo_head->begin; + } + + /* current fragment used/full; get new fragment */ + { + ogg_reference *new=ogg_buffer_alloc(oy->bufferpool,bytes); + oy->fifo_head->next=new; + oy->fifo_head=new; + } + return oy->fifo_head->buffer->data; +} + +int ogg_sync_wrote(ogg_sync_state *oy, long bytes){ + if(!oy->fifo_head)return OGG_EINVAL; + if(oy->fifo_head->buffer->size-oy->fifo_head->length-oy->fifo_head->begin < + bytes)return OGG_EINVAL; + oy->fifo_head->length+=bytes; + oy->fifo_fill+=bytes; + return OGG_SUCCESS; +} + +#ifndef ONLY_C +ogg_uint32_t _checksum(ogg_reference *or, int bytes); +#else +static ogg_uint32_t _checksum(ogg_reference *or, int bytes){ + ogg_uint32_t crc_reg=0; + int j,post; + + while(or){ + unsigned char *data=or->buffer->data+or->begin; + post=(byteslength?bytes:or->length); + for(j=0;j> 24)&0xff)^data[j]]; + bytes-=j; + or=or->next; + } + + return crc_reg; +} +#endif + +/* sync the stream. This is meant to be useful for finding page + boundaries. + + return values for this: + -n) skipped n bytes + 0) page not ready; more data (no bytes skipped) + n) page synced at current location; page length n bytes + +*/ + +long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){ + oggbyte_buffer page; + long bytes,ret=0; + + ogg_page_release(og); + + bytes=oy->fifo_fill; + oggbyte_init(&page,oy->fifo_tail); + + if(oy->headerbytes==0){ + if(bytes<27)goto sync_out; /* not enough for even a minimal header */ + + /* verify capture pattern */ + if(oggbyte_read1(&page,0)!=(int)'O' || + oggbyte_read1(&page,1)!=(int)'g' || + oggbyte_read1(&page,2)!=(int)'g' || + oggbyte_read1(&page,3)!=(int)'S' ) goto sync_fail; + + oy->headerbytes=oggbyte_read1(&page,26)+27; + } + if(bytesheaderbytes)goto sync_out; /* not enough for header + + seg table */ + if(oy->bodybytes==0){ + int i; + /* count up body length in the segment table */ + for(i=0;iheaderbytes-27;i++) + oy->bodybytes+=oggbyte_read1(&page,27+i); + } + + if(oy->bodybytes+oy->headerbytes>bytes)goto sync_out; + + /* we have what appears to be a complete page; last test: verify + checksum */ + { + ogg_uint32_t chksum=oggbyte_read4(&page,22); + oggbyte_set4(&page,0,22); + + /* Compare checksums; memory continues to be common access */ + if(chksum!=_checksum(oy->fifo_tail,oy->bodybytes+oy->headerbytes)){ + + /* D'oh. Mismatch! Corrupt page (or miscapture and not a page + at all). replace the computed checksum with the one actually + read in; remember all the memory is common access */ + + oggbyte_set4(&page,chksum,22); + goto sync_fail; + } + oggbyte_set4(&page,chksum,22); + } + + /* We have a page. Set up page return. */ + if(og){ + /* set up page output */ + og->header=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->headerbytes); + og->header_len=oy->headerbytes; + og->body=ogg_buffer_split(&oy->fifo_tail,&oy->fifo_head,oy->bodybytes); + og->body_len=oy->bodybytes; + }else{ + /* simply advance */ + oy->fifo_tail= + ogg_buffer_pretruncate(oy->fifo_tail,oy->headerbytes+oy->bodybytes); + if(!oy->fifo_tail)oy->fifo_head=0; + } + + ret=oy->headerbytes+oy->bodybytes; + oy->unsynced=0; + oy->headerbytes=0; + oy->bodybytes=0; + oy->fifo_fill-=ret; + + return ret; + + sync_fail: + + oy->headerbytes=0; + oy->bodybytes=0; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,1); + ret--; + + /* search forward through fragments for possible capture */ + while(oy->fifo_tail){ + /* invariant: fifo_cursor points to a position in fifo_tail */ + unsigned char *now=oy->fifo_tail->buffer->data+oy->fifo_tail->begin; + unsigned char *next=memchr(now, 'O', oy->fifo_tail->length); + + if(next){ + /* possible capture in this segment */ + long bytes=next-now; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); + ret-=bytes; + break; + }else{ + /* no capture. advance to next segment */ + long bytes=oy->fifo_tail->length; + ret-=bytes; + oy->fifo_tail=ogg_buffer_pretruncate(oy->fifo_tail,bytes); + } + } + if(!oy->fifo_tail)oy->fifo_head=0; + oy->fifo_fill+=ret; + + sync_out: + return ret; +} + +/* sync the stream and get a page. Keep trying until we find a page. + Supress 'sync errors' after reporting the first. + + return values: + OGG_HOLE) recapture (hole in data) + 0) need more data + 1) page returned + + Returns pointers into buffered data; invalidated by next call to + _stream, _clear, _init, or _buffer */ + +int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){ + + /* all we need to do is verify a page at the head of the stream + buffer. If it doesn't verify, we look for the next potential + frame */ + + while(1){ + long ret=ogg_sync_pageseek(oy,og); + if(ret>0){ + /* have a page */ + return 1; + } + if(ret==0){ + /* need more data */ + return 0; + } + + /* head did not start a synced page... skipped some bytes */ + if(!oy->unsynced){ + oy->unsynced=1; + return OGG_HOLE; + } + + /* loop. keep looking */ + + } +} + +/* clear things to an initial state. Good to call, eg, before seeking */ +int ogg_sync_reset(ogg_sync_state *oy){ + + ogg_buffer_release(oy->fifo_tail); + oy->fifo_tail=0; + oy->fifo_head=0; + oy->fifo_fill=0; + + oy->unsynced=0; + oy->headerbytes=0; + oy->bodybytes=0; + return OGG_SUCCESS; +} + +void ogg_stream_init(ogg_stream_state *os, int serialno){ + memset(os, 0, sizeof(*os)); + os->serialno=serialno; + os->pageno=-1; +} + +ogg_stream_state *ogg_stream_create(int serialno){ + ogg_stream_state *os=_ogg_calloc(1,sizeof(*os)); + os->serialno=serialno; + os->pageno=-1; + return os; +} + +int ogg_stream_clear(ogg_stream_state *os){ + if(os){ + ogg_buffer_release(os->header_tail); + ogg_buffer_release(os->body_tail); + memset(os,0,sizeof(*os)); + } + return OGG_SUCCESS; +} + +int ogg_stream_destroy(ogg_stream_state *os){ + if(os){ + ogg_buffer_release(os->header_tail); + ogg_buffer_release(os->body_tail); + memset(os,0,sizeof(*os)); + _ogg_free(os); + } + return OGG_SUCCESS; +} + + +#define FINFLAG 0x80000000UL +#define FINMASK 0x7fffffffUL + +static void _next_lace(oggbyte_buffer *ob,ogg_stream_state *os){ + /* search ahead one lace */ + os->body_fill_next=0; + while(os->laceptrlacing_fill){ + int val=oggbyte_read1(ob,27+os->laceptr++); + os->body_fill_next+=val; + if(val<255){ + os->body_fill_next|=FINFLAG; + os->clearflag=1; + break; + } + } +} + +static void _span_queued_page(ogg_stream_state *os){ + while( !(os->body_fill&FINFLAG) ){ + + if(!os->header_tail)break; + + /* first flush out preceeding page header (if any). Body is + flushed as it's consumed, so that's not done here. */ + + if(os->lacing_fill>=0) + os->header_tail=ogg_buffer_pretruncate(os->header_tail, + os->lacing_fill+27); + os->lacing_fill=0; + os->laceptr=0; + os->clearflag=0; + + if(!os->header_tail){ + os->header_head=0; + break; + }else{ + + /* process/prepare next page, if any */ + + long pageno; + oggbyte_buffer ob; + ogg_page og; /* only for parsing header values */ + og.header=os->header_tail; /* only for parsing header values */ + pageno=ogg_page_pageno(&og); + + oggbyte_init(&ob,os->header_tail); + os->lacing_fill=oggbyte_read1(&ob,26); + + /* are we in sequence? */ + if(pageno!=os->pageno){ + if(os->pageno==-1) /* indicates seek or reset */ + os->holeflag=1; /* set for internal use */ + else + os->holeflag=2; /* set for external reporting */ + + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill); + if(os->body_tail==0)os->body_head=0; + os->body_fill=0; + + } + + if(ogg_page_continued(&og)){ + if(os->body_fill==0){ + /* continued packet, but no preceeding data to continue */ + /* dump the first partial packet on the page */ + _next_lace(&ob,os); + os->body_tail= + ogg_buffer_pretruncate(os->body_tail,os->body_fill_next&FINMASK); + if(os->body_tail==0)os->body_head=0; + /* set span flag */ + if(!os->spanflag && !os->holeflag)os->spanflag=2; + } + }else{ + if(os->body_fill>0){ + /* preceeding data to continue, but not a continued page */ + /* dump body_fill */ + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill); + if(os->body_tail==0)os->body_head=0; + os->body_fill=0; + + /* set espan flag */ + if(!os->spanflag && !os->holeflag)os->spanflag=2; + } + } + + if(os->laceptrlacing_fill){ + os->granulepos=ogg_page_granulepos(&og); + + /* get current packet size & flag */ + _next_lace(&ob,os); + os->body_fill+=os->body_fill_next; /* addition handles the flag fine; + unsigned on purpose */ + /* ...and next packet size & flag */ + _next_lace(&ob,os); + + } + + os->pageno=pageno+1; + os->e_o_s=ogg_page_eos(&og); + os->b_o_s=ogg_page_bos(&og); + + } + } +} + +/* add the incoming page to the stream state; we decompose the page + into packet segments here as well. */ + +int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){ + + int serialno=ogg_page_serialno(og); + int version=ogg_page_version(og); + + /* check the serial number */ + if(serialno!=os->serialno){ + //ogg_page_release(og); + return OGG_ESERIAL; + } + if(version>0){ + //ogg_page_release(og); + return OGG_EVERSION; + } + + /* add to fifos */ + if(!os->body_tail){ + os->body_tail=og->body; + os->body_head=ogg_buffer_walk(og->body); + }else{ + os->body_head=ogg_buffer_cat(os->body_head,og->body); + } + if(!os->header_tail){ + os->header_tail=og->header; + os->header_head=ogg_buffer_walk(og->header); + os->lacing_fill=-27; + }else{ + os->header_head=ogg_buffer_cat(os->header_head,og->header); + } + + memset(og,0,sizeof(*og)); + return OGG_SUCCESS; +} + +int ogg_stream_reset(ogg_stream_state *os){ + + ogg_buffer_release(os->header_tail); + ogg_buffer_release(os->body_tail); + os->header_tail=os->header_head=0; + os->body_tail=os->body_head=0; + + os->e_o_s=0; + os->b_o_s=0; + os->pageno=-1; + os->packetno=0; + os->granulepos=0; + + os->body_fill=0; + os->lacing_fill=0; + + os->holeflag=0; + os->spanflag=0; + os->clearflag=0; + os->laceptr=0; + os->body_fill_next=0; + + return OGG_SUCCESS; +} + +int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){ + ogg_stream_reset(os); + os->serialno=serialno; + return OGG_SUCCESS; +} + +static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){ + + ogg_packet_release(op); + _span_queued_page(os); + + if(os->holeflag){ + int temp=os->holeflag; + if(os->clearflag) + os->holeflag=0; + else + os->holeflag=1; + if(temp==2){ + os->packetno++; + return OGG_HOLE; + } + } + if(os->spanflag){ + int temp=os->spanflag; + if(os->clearflag) + os->spanflag=0; + else + os->spanflag=1; + if(temp==2){ + os->packetno++; + return OGG_SPAN; + } + } + + if(!(os->body_fill&FINFLAG)) return 0; + if(!op && !adv)return 1; /* just using peek as an inexpensive way + to ask if there's a whole packet + waiting */ + if(op){ + op->b_o_s=os->b_o_s; + if(os->e_o_s && os->body_fill_next==0) + op->e_o_s=os->e_o_s; + else + op->e_o_s=0; + if( (os->body_fill&FINFLAG) && !(os->body_fill_next&FINFLAG) ) + op->granulepos=os->granulepos; + else + op->granulepos=-1; + op->packetno=os->packetno; + } + + if(adv){ + oggbyte_buffer ob; + oggbyte_init(&ob,os->header_tail); + + /* split the body contents off */ + if(op){ + op->packet=ogg_buffer_split(&os->body_tail,&os->body_head, + os->body_fill&FINMASK); + op->bytes=os->body_fill&FINMASK; + }else{ + os->body_tail=ogg_buffer_pretruncate(os->body_tail, + os->body_fill&FINMASK); + if(os->body_tail==0)os->body_head=0; + } + + /* update lacing pointers */ + os->body_fill=os->body_fill_next; + _next_lace(&ob,os); + }else{ + if(op){ + op->packet=ogg_buffer_sub(os->body_tail,os->body_fill&FINMASK); + op->bytes=os->body_fill&FINMASK; + } + } + + if(adv){ + os->packetno++; + os->b_o_s=0; + } + + return 1; +} + +int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){ + return _packetout(os,op,1); +} + +int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){ + return _packetout(os,op,0); +} + +int ogg_packet_release(ogg_packet *op) { + if(op){ + ogg_buffer_release(op->packet); + memset(op, 0, sizeof(*op)); + } + return OGG_SUCCESS; +} + +int ogg_page_release(ogg_page *og) { + if(og){ + ogg_buffer_release(og->header); + ogg_buffer_release(og->body); + memset(og, 0, sizeof(*og)); + } + return OGG_SUCCESS; +} + +void ogg_page_dup(ogg_page *dup,ogg_page *orig){ + dup->header_len=orig->header_len; + dup->body_len=orig->body_len; + dup->header=ogg_buffer_dup(orig->header); + dup->body=ogg_buffer_dup(orig->body); +} + diff --git a/Tremolo/ivorbiscodec.h b/Tremolo/ivorbiscodec.h new file mode 100644 index 0000000..d7f3709 --- /dev/null +++ b/Tremolo/ivorbiscodec.h @@ -0,0 +1,104 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: libvorbis codec headers + + ********************************************************************/ + +#ifndef _vorbis_codec_h_ +#define _vorbis_codec_h_ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +#include "ogg.h" + +struct vorbis_dsp_state; +typedef struct vorbis_dsp_state vorbis_dsp_state; + +typedef struct vorbis_info{ + int version; + int channels; + long rate; + + /* The below bitrate declarations are *hints*. + Combinations of the three values carry the following implications: + + all three set to the same value: + implies a fixed rate bitstream + only nominal set: + implies a VBR stream that averages the nominal bitrate. No hard + upper/lower limit + upper and or lower set: + implies a VBR bitstream that obeys the bitrate limits. nominal + may also be set to give a nominal rate. + none set: + the coder does not care to speculate. + */ + + long bitrate_upper; + long bitrate_nominal; + long bitrate_lower; + long bitrate_window; + + void *codec_setup; +} vorbis_info; + +typedef struct vorbis_comment{ + char **user_comments; + int *comment_lengths; + int comments; + char *vendor; + +} vorbis_comment; + + +/* Vorbis PRIMITIVES: general ***************************************/ + +extern void vorbis_info_init(vorbis_info *vi); +extern void vorbis_info_clear(vorbis_info *vi); +extern int vorbis_info_blocksize(vorbis_info *vi,int zo); +extern void vorbis_comment_init(vorbis_comment *vc); +extern void vorbis_comment_add(vorbis_comment *vc, char *comment); +extern void vorbis_comment_add_tag(vorbis_comment *vc, + char *tag, char *contents); +extern char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count); +extern int vorbis_comment_query_count(vorbis_comment *vc, char *tag); +extern void vorbis_comment_clear(vorbis_comment *vc); + +/* Vorbis ERRORS and return codes ***********************************/ + +#define OV_FALSE -1 +#define OV_EOF -2 +#define OV_HOLE -3 + +#define OV_EREAD -128 +#define OV_EFAULT -129 +#define OV_EIMPL -130 +#define OV_EINVAL -131 +#define OV_ENOTVORBIS -132 +#define OV_EBADHEADER -133 +#define OV_EVERSION -134 +#define OV_ENOTAUDIO -135 +#define OV_EBADPACKET -136 +#define OV_EBADLINK -137 +#define OV_ENOSEEK -138 + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif + diff --git a/Tremolo/ivorbisfile.h b/Tremolo/ivorbisfile.h new file mode 100644 index 0000000..7ebc042 --- /dev/null +++ b/Tremolo/ivorbisfile.h @@ -0,0 +1,122 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: stdio-based convenience library for opening/seeking/decoding + + ********************************************************************/ + +#ifndef _OV_FILE_H_ +#define _OV_FILE_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +#include +#include "ivorbiscodec.h" + +/* The function prototypes for the callbacks are basically the same as for + * the stdio functions fread, fseek, fclose, ftell. + * The one difference is that the FILE * arguments have been replaced with + * a void * - this is to be used as a pointer to whatever internal data these + * functions might need. In the stdio case, it's just a FILE * cast to a void * + * + * If you use other functions, check the docs for these functions and return + * the right values. For seek_func(), you *MUST* return -1 if the stream is + * unseekable + */ +typedef struct { + size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource); + int (*seek_func) (void *datasource, ogg_int64_t offset, int whence); + int (*close_func) (void *datasource); + long (*tell_func) (void *datasource); +} ov_callbacks; + +typedef struct OggVorbis_File { + void *datasource; /* Pointer to a FILE *, etc. */ + int seekable; + ogg_int64_t offset; + ogg_int64_t end; + ogg_sync_state *oy; + + /* If the FILE handle isn't seekable (eg, a pipe), only the current + stream appears */ + int links; + ogg_int64_t *offsets; + ogg_int64_t *dataoffsets; + ogg_uint32_t *serialnos; + ogg_int64_t *pcmlengths; + vorbis_info vi; + vorbis_comment vc; + + /* Decoding working state local storage */ + ogg_int64_t pcm_offset; + int ready_state; + ogg_uint32_t current_serialno; + int current_link; + + ogg_int64_t bittrack; + ogg_int64_t samptrack; + + ogg_stream_state *os; /* take physical pages, weld into a logical + stream of packets */ + vorbis_dsp_state *vd; /* central working state for the packet->PCM decoder */ + + ov_callbacks callbacks; + +} OggVorbis_File; + +extern int ov_clear(OggVorbis_File *vf); +extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); + +extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); +extern int ov_test_open(OggVorbis_File *vf); + +extern long ov_bitrate(OggVorbis_File *vf,int i); +extern long ov_bitrate_instant(OggVorbis_File *vf); +extern long ov_streams(OggVorbis_File *vf); +extern long ov_seekable(OggVorbis_File *vf); +extern long ov_serialnumber(OggVorbis_File *vf,int i); + +extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_time_total(OggVorbis_File *vf,int i); + +extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t pos); + +extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_time_tell(OggVorbis_File *vf); + +extern vorbis_info *ov_info(OggVorbis_File *vf,int link); +extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link); + +extern long ov_read(OggVorbis_File *vf,void *buffer,int length, + int *bitstream); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif + + diff --git a/Tremolo/lsp_lookup.h b/Tremolo/lsp_lookup.h new file mode 100644 index 0000000..72c7581 --- /dev/null +++ b/Tremolo/lsp_lookup.h @@ -0,0 +1,108 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: lookup data + + ********************************************************************/ + +#ifndef _V_LOOKUP_DATA_H_ +#define _V_LOOKUP_DATA_H_ + +#include "os_types.h" + +#define INVSQ_LOOKUP_I_SHIFT 10 +#define INVSQ_LOOKUP_I_MASK 1023 +static const long INVSQ_LOOKUP_I[64+1]={ + 92682, 91966, 91267, 90583, + 89915, 89261, 88621, 87995, + 87381, 86781, 86192, 85616, + 85051, 84497, 83953, 83420, + 82897, 82384, 81880, 81385, + 80899, 80422, 79953, 79492, + 79039, 78594, 78156, 77726, + 77302, 76885, 76475, 76072, + 75674, 75283, 74898, 74519, + 74146, 73778, 73415, 73058, + 72706, 72359, 72016, 71679, + 71347, 71019, 70695, 70376, + 70061, 69750, 69444, 69141, + 68842, 68548, 68256, 67969, + 67685, 67405, 67128, 66855, + 66585, 66318, 66054, 65794, + 65536, +}; + +static const long INVSQ_LOOKUP_IDel[64]={ + 716, 699, 684, 668, + 654, 640, 626, 614, + 600, 589, 576, 565, + 554, 544, 533, 523, + 513, 504, 495, 486, + 477, 469, 461, 453, + 445, 438, 430, 424, + 417, 410, 403, 398, + 391, 385, 379, 373, + 368, 363, 357, 352, + 347, 343, 337, 332, + 328, 324, 319, 315, + 311, 306, 303, 299, + 294, 292, 287, 284, + 280, 277, 273, 270, + 267, 264, 260, 258, +}; + +#define COS_LOOKUP_I_SHIFT 9 +#define COS_LOOKUP_I_MASK 511 +#define COS_LOOKUP_I_SZ 128 +static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={ + 16384, 16379, 16364, 16340, + 16305, 16261, 16207, 16143, + 16069, 15986, 15893, 15791, + 15679, 15557, 15426, 15286, + 15137, 14978, 14811, 14635, + 14449, 14256, 14053, 13842, + 13623, 13395, 13160, 12916, + 12665, 12406, 12140, 11866, + 11585, 11297, 11003, 10702, + 10394, 10080, 9760, 9434, + 9102, 8765, 8423, 8076, + 7723, 7366, 7005, 6639, + 6270, 5897, 5520, 5139, + 4756, 4370, 3981, 3590, + 3196, 2801, 2404, 2006, + 1606, 1205, 804, 402, + 0, -401, -803, -1204, + -1605, -2005, -2403, -2800, + -3195, -3589, -3980, -4369, + -4755, -5138, -5519, -5896, + -6269, -6638, -7004, -7365, + -7722, -8075, -8422, -8764, + -9101, -9433, -9759, -10079, + -10393, -10701, -11002, -11296, + -11584, -11865, -12139, -12405, + -12664, -12915, -13159, -13394, + -13622, -13841, -14052, -14255, + -14448, -14634, -14810, -14977, + -15136, -15285, -15425, -15556, + -15678, -15790, -15892, -15985, + -16068, -16142, -16206, -16260, + -16304, -16339, -16363, -16378, + -16383, +}; + +#endif + + + + + diff --git a/Tremolo/mapping0.c b/Tremolo/mapping0.c new file mode 100644 index 0000000..f3e4c96 --- /dev/null +++ b/Tremolo/mapping0.c @@ -0,0 +1,241 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: channel mapping 0 implementation + + ********************************************************************/ + +#include +#include +#include +#include +#include "ogg.h" +#include "os.h" +#include "ivorbiscodec.h" +#include "mdct.h" +#include "codec_internal.h" +#include "codebook.h" +#include "misc.h" + +void mapping_clear_info(vorbis_info_mapping *info){ + if(info){ + if(info->chmuxlist)_ogg_free(info->chmuxlist); + if(info->submaplist)_ogg_free(info->submaplist); + if(info->coupling)_ogg_free(info->coupling); + memset(info,0,sizeof(*info)); + } +} + +static int ilog(unsigned int v){ + int ret=0; + if(v)--v; + while(v){ + ret++; + v>>=1; + } + return(ret); +} + +/* also responsible for range checking */ +int mapping_info_unpack(vorbis_info_mapping *info,vorbis_info *vi, + oggpack_buffer *opb){ + int i; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + memset(info,0,sizeof(*info)); + + if(oggpack_read(opb,1)) + info->submaps=oggpack_read(opb,4)+1; + else + info->submaps=1; + + if(oggpack_read(opb,1)){ + info->coupling_steps=oggpack_read(opb,8)+1; + info->coupling= + _ogg_malloc(info->coupling_steps*sizeof(*info->coupling)); + + for(i=0;icoupling_steps;i++){ + int testM=info->coupling[i].mag=(unsigned char)(oggpack_read(opb,ilog(vi->channels))); + int testA=info->coupling[i].ang=(unsigned char)(oggpack_read(opb,ilog(vi->channels))); + + if(testM<0 || + testA<0 || + testM==testA || + testM>=vi->channels || + testA>=vi->channels) goto err_out; + } + + } + + if(oggpack_read(opb,2)>0)goto err_out; /* 2,3:reserved */ + + if(info->submaps>1){ + info->chmuxlist=_ogg_malloc(sizeof(*info->chmuxlist)*vi->channels); + for(i=0;ichannels;i++){ + info->chmuxlist[i]=(unsigned char)(oggpack_read(opb,4)); + if(info->chmuxlist[i]>=info->submaps)goto err_out; + } + } + + info->submaplist=_ogg_malloc(sizeof(*info->submaplist)*info->submaps); + for(i=0;isubmaps;i++){ + int temp=oggpack_read(opb,8); + info->submaplist[i].floor=(char)oggpack_read(opb,8); + if(info->submaplist[i].floor>=ci->floors)goto err_out; + info->submaplist[i].residue=(char)oggpack_read(opb,8); + if(info->submaplist[i].residue>=ci->residues)goto err_out; + } + + return 0; + + err_out: + mapping_clear_info(info); + return -1; +} + +int mapping_inverse(vorbis_dsp_state *vd,vorbis_info_mapping *info){ + vorbis_info *vi=vd->vi; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + + int i,j; + long n=ci->blocksizes[vd->W]; + + ogg_int32_t **pcmbundle= + alloca(sizeof(*pcmbundle)*vi->channels); + int *zerobundle= + alloca(sizeof(*zerobundle)*vi->channels); + int *nonzero= + alloca(sizeof(*nonzero)*vi->channels); + ogg_int32_t **floormemo= + alloca(sizeof(*floormemo)*vi->channels); + + /* recover the spectral envelope; store it in the PCM vector for now */ + for(i=0;ichannels;i++){ + int submap=0; + int floorno; + + if(info->submaps>1) + submap=info->chmuxlist[i]; + floorno=info->submaplist[submap].floor; + + if(ci->floor_type[floorno]){ + /* floor 1 */ + floormemo[i]=alloca(sizeof(*floormemo[i])* + floor1_memosize(ci->floor_param[floorno])); + floormemo[i]=floor1_inverse1(vd,ci->floor_param[floorno],floormemo[i]); + }else{ + /* floor 0 */ + floormemo[i]=alloca(sizeof(*floormemo[i])* + floor0_memosize(ci->floor_param[floorno])); + floormemo[i]=floor0_inverse1(vd,ci->floor_param[floorno],floormemo[i]); + } + + if(floormemo[i]) + nonzero[i]=1; + else + nonzero[i]=0; + memset(vd->work[i],0,sizeof(*vd->work[i])*n/2); + } + + /* channel coupling can 'dirty' the nonzero listing */ + for(i=0;icoupling_steps;i++){ + if(nonzero[info->coupling[i].mag] || + nonzero[info->coupling[i].ang]){ + nonzero[info->coupling[i].mag]=1; + nonzero[info->coupling[i].ang]=1; + } + } + + /* recover the residue into our working vectors */ + for(i=0;isubmaps;i++){ + int ch_in_bundle=0; + for(j=0;jchannels;j++){ + if(!info->chmuxlist || info->chmuxlist[j]==i){ + if(nonzero[j]) + zerobundle[ch_in_bundle]=1; + else + zerobundle[ch_in_bundle]=0; + pcmbundle[ch_in_bundle++]=vd->work[j]; + } + } + + res_inverse(vd,ci->residue_param+info->submaplist[i].residue, + pcmbundle,zerobundle,ch_in_bundle); + } + + //for(j=0;jchannels;j++) + //_analysis_output("coupled",seq+j,vb->pcm[j],-8,n/2,0,0); + + /* channel coupling */ + for(i=info->coupling_steps-1;i>=0;i--){ + ogg_int32_t *pcmM=vd->work[info->coupling[i].mag]; + ogg_int32_t *pcmA=vd->work[info->coupling[i].ang]; + + for(j=0;j0) + if(ang>0){ + pcmM[j]=mag; + pcmA[j]=mag-ang; + }else{ + pcmA[j]=mag; + pcmM[j]=mag+ang; + } + else + if(ang>0){ + pcmM[j]=mag; + pcmA[j]=mag+ang; + }else{ + pcmA[j]=mag; + pcmM[j]=mag-ang; + } + } + } + + //for(j=0;jchannels;j++) + //_analysis_output("residue",seq+j,vb->pcm[j],-8,n/2,0,0); + + /* compute and apply spectral envelope */ + for(i=0;ichannels;i++){ + ogg_int32_t *pcm=vd->work[i]; + int submap=0; + int floorno; + + if(info->submaps>1) + submap=info->chmuxlist[i]; + floorno=info->submaplist[submap].floor; + + if(ci->floor_type[floorno]){ + /* floor 1 */ + floor1_inverse2(vd,ci->floor_param[floorno],floormemo[i],pcm); + }else{ + /* floor 0 */ + floor0_inverse2(vd,ci->floor_param[floorno],floormemo[i],pcm); + } + } + + //for(j=0;jchannels;j++) + //_analysis_output("mdct",seq+j,vb->pcm[j],-24,n/2,0,1); + + /* transform the PCM data; takes PCM vector, vb; modifies PCM vector */ + /* only MDCT right now.... */ + for(i=0;ichannels;i++) + mdct_backward(n,vd->work[i]); + + //for(j=0;jchannels;j++) + //_analysis_output("imdct",seq+j,vb->pcm[j],-24,n,0,0); + + /* all done! */ + return(0); +} diff --git a/Tremolo/mdct.c b/Tremolo/mdct.c new file mode 100644 index 0000000..450819b --- /dev/null +++ b/Tremolo/mdct.c @@ -0,0 +1,562 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: normalized modified discrete cosine transform + power of two length transform only [64 <= n ] + last mod: $Id: mdct.c,v 1.9.6.5 2003/04/29 04:03:27 xiphmont Exp $ + + Original algorithm adapted long ago from _The use of multirate filter + banks for coding of high quality digital audio_, by T. Sporer, + K. Brandenburg and B. Edler, collection of the European Signal + Processing Conference (EUSIPCO), Amsterdam, June 1992, Vol.1, pp + 211-214 + + The below code implements an algorithm that no longer looks much like + that presented in the paper, but the basic structure remains if you + dig deep enough to see it. + + This module DOES NOT INCLUDE code to generate/apply the window + function. Everybody has their own weird favorite including me... I + happen to like the properties of y=sin(.5PI*sin^2(x)), but others may + vehemently disagree. + + ********************************************************************/ + +#include "ivorbiscodec.h" +#include "os.h" +#include "misc.h" +#include "mdct.h" +#include "mdct_lookup.h" + +#include + +#if defined(ONLY_C) +STIN void presymmetry(DATA_TYPE *in,int n2,int step){ + DATA_TYPE *aX; + DATA_TYPE *bX; + LOOKUP_T *T; + int n4=n2>>1; + + aX = in+n2-3; + T = sincos_lookup0; + + do{ + REG_TYPE s0= aX[0]; + REG_TYPE s2= aX[2]; + XPROD31( s0, s2, T[0], T[1], &aX[0], &aX[2] ); T+=step; + aX-=4; + }while(aX>=in+n4); + do{ + REG_TYPE s0= aX[0]; + REG_TYPE s2= aX[2]; + XPROD31( s0, s2, T[1], T[0], &aX[0], &aX[2] ); T-=step; + aX-=4; + }while(aX>=in); + + aX = in+n2-4; + bX = in; + T = sincos_lookup0; + do{ + REG_TYPE ri0= aX[0]; + REG_TYPE ri2= aX[2]; + REG_TYPE ro0= bX[0]; + REG_TYPE ro2= bX[2]; + + XNPROD31( ro2, ro0, T[1], T[0], &aX[0], &aX[2] ); T+=step; + XNPROD31( ri2, ri0, T[0], T[1], &bX[0], &bX[2] ); + + aX-=4; + bX+=4; + }while(aX>=bX); +} + +/* 8 point butterfly (in place) */ +STIN void mdct_butterfly_8(DATA_TYPE *x){ + + REG_TYPE s0 = x[0] + x[1]; + REG_TYPE s1 = x[0] - x[1]; + REG_TYPE s2 = x[2] + x[3]; + REG_TYPE s3 = x[2] - x[3]; + REG_TYPE s4 = x[4] + x[5]; + REG_TYPE s5 = x[4] - x[5]; + REG_TYPE s6 = x[6] + x[7]; + REG_TYPE s7 = x[6] - x[7]; + + x[0] = s5 + s3; + x[1] = s7 - s1; + x[2] = s5 - s3; + x[3] = s7 + s1; + x[4] = s4 - s0; + x[5] = s6 - s2; + x[6] = s4 + s0; + x[7] = s6 + s2; + MB(); +} + +/* 16 point butterfly (in place, 4 register) */ +STIN void mdct_butterfly_16(DATA_TYPE *x){ + + REG_TYPE s0, s1, s2, s3; + + s0 = x[ 8] - x[ 9]; x[ 8] += x[ 9]; + s1 = x[10] - x[11]; x[10] += x[11]; + s2 = x[ 1] - x[ 0]; x[ 9] = x[ 1] + x[0]; + s3 = x[ 3] - x[ 2]; x[11] = x[ 3] + x[2]; + x[ 0] = MULT31((s0 - s1) , cPI2_8); + x[ 1] = MULT31((s2 + s3) , cPI2_8); + x[ 2] = MULT31((s0 + s1) , cPI2_8); + x[ 3] = MULT31((s3 - s2) , cPI2_8); + MB(); + + s2 = x[12] - x[13]; x[12] += x[13]; + s3 = x[14] - x[15]; x[14] += x[15]; + s0 = x[ 4] - x[ 5]; x[13] = x[ 5] + x[ 4]; + s1 = x[ 7] - x[ 6]; x[15] = x[ 7] + x[ 6]; + x[ 4] = s2; x[ 5] = s1; + x[ 6] = s3; x[ 7] = s0; + MB(); + + mdct_butterfly_8(x); + mdct_butterfly_8(x+8); +} + +/* 32 point butterfly (in place, 4 register) */ +STIN void mdct_butterfly_32(DATA_TYPE *x){ + + REG_TYPE s0, s1, s2, s3; + + s0 = x[16] - x[17]; x[16] += x[17]; + s1 = x[18] - x[19]; x[18] += x[19]; + s2 = x[ 1] - x[ 0]; x[17] = x[ 1] + x[ 0]; + s3 = x[ 3] - x[ 2]; x[19] = x[ 3] + x[ 2]; + XNPROD31( s0, s1, cPI3_8, cPI1_8, &x[ 0], &x[ 2] ); + XPROD31 ( s2, s3, cPI1_8, cPI3_8, &x[ 1], &x[ 3] ); + MB(); + + s0 = x[20] - x[21]; x[20] += x[21]; + s1 = x[22] - x[23]; x[22] += x[23]; + s2 = x[ 5] - x[ 4]; x[21] = x[ 5] + x[ 4]; + s3 = x[ 7] - x[ 6]; x[23] = x[ 7] + x[ 6]; + x[ 4] = MULT31((s0 - s1) , cPI2_8); + x[ 5] = MULT31((s3 + s2) , cPI2_8); + x[ 6] = MULT31((s0 + s1) , cPI2_8); + x[ 7] = MULT31((s3 - s2) , cPI2_8); + MB(); + + s0 = x[24] - x[25]; x[24] += x[25]; + s1 = x[26] - x[27]; x[26] += x[27]; + s2 = x[ 9] - x[ 8]; x[25] = x[ 9] + x[ 8]; + s3 = x[11] - x[10]; x[27] = x[11] + x[10]; + XNPROD31( s0, s1, cPI1_8, cPI3_8, &x[ 8], &x[10] ); + XPROD31 ( s2, s3, cPI3_8, cPI1_8, &x[ 9], &x[11] ); + MB(); + + s0 = x[28] - x[29]; x[28] += x[29]; + s1 = x[30] - x[31]; x[30] += x[31]; + s2 = x[12] - x[13]; x[29] = x[13] + x[12]; + s3 = x[15] - x[14]; x[31] = x[15] + x[14]; + x[12] = s0; x[13] = s3; + x[14] = s1; x[15] = s2; + MB(); + + mdct_butterfly_16(x); + mdct_butterfly_16(x+16); +} + +/* N/stage point generic N stage butterfly (in place, 2 register) */ +STIN void mdct_butterfly_generic(DATA_TYPE *x,int points,int step){ + LOOKUP_T *T = sincos_lookup0; + DATA_TYPE *x1 = x + points - 4; + DATA_TYPE *x2 = x + (points>>1) - 4; + REG_TYPE s0, s1, s2, s3; + + do{ + s0 = x1[0] - x1[1]; x1[0] += x1[1]; + s1 = x1[3] - x1[2]; x1[2] += x1[3]; + s2 = x2[1] - x2[0]; x1[1] = x2[1] + x2[0]; + s3 = x2[3] - x2[2]; x1[3] = x2[3] + x2[2]; + XPROD31( s1, s0, T[0], T[1], &x2[0], &x2[2] ); + XPROD31( s2, s3, T[0], T[1], &x2[1], &x2[3] ); T+=step; + x1-=4; + x2-=4; + }while(T>1) + (points>>2) - 4; + x2 = x + (points>>2) - 4; + T = sincos_lookup0+1024; + do{ + s0 = x1[0] - x1[1]; x1[0] += x1[1]; + s1 = x1[2] - x1[3]; x1[2] += x1[3]; + s2 = x2[0] - x2[1]; x1[1] = x2[1] + x2[0]; + s3 = x2[3] - x2[2]; x1[3] = x2[3] + x2[2]; + XNPROD31( s0, s1, T[0], T[1], &x2[0], &x2[2] ); + XNPROD31( s3, s2, T[0], T[1], &x2[1], &x2[3] ); T-=step; + x1-=4; + x2-=4; + }while(T>sincos_lookup0); +} + +STIN void mdct_butterflies(DATA_TYPE *x,int points,int shift){ + + int stages=7-shift; + int i,j; + + for(i=0;--stages>=0;i++){ + for(j=0;j<(1<>i)*j,points>>i,4<<(i+shift)); + } + } + + for(j=0;j>8]|(bitrev[(x&0x0f0)>>4]<<4)|(((int)bitrev[x&0x00f])<<8); +} + +STIN void mdct_bitreverse(DATA_TYPE *x,int n,int shift){ + int bit = 0; + DATA_TYPE *w = x+(n>>1); + + do{ + DATA_TYPE b = bitrev12(bit++); + DATA_TYPE *xx = x + (b>>shift); + REG_TYPE r; + + w -= 2; + + if(w>xx){ + + r = xx[0]; + xx[0] = w[0]; + w[0] = r; + + r = xx[1]; + xx[1] = w[1]; + w[1] = r; + } + }while(w>x); +} + +STIN void mdct_step7(DATA_TYPE *x,int n,int step){ + DATA_TYPE *w0 = x; + DATA_TYPE *w1 = x+(n>>1); + LOOKUP_T *T = (step>=4)?(sincos_lookup0+(step>>1)):sincos_lookup1; + LOOKUP_T *Ttop = T+1024; + REG_TYPE s0, s1, s2, s3; + + do{ + w1 -= 2; + + s0 = w0[0] + w1[0]; + s1 = w1[1] - w0[1]; + s2 = MULT32(s0, T[1]) + MULT32(s1, T[0]); + s3 = MULT32(s1, T[1]) - MULT32(s0, T[0]); + T+=step; + + s0 = (w0[1] + w1[1])>>1; + s1 = (w0[0] - w1[0])>>1; + w0[0] = s0 + s2; + w0[1] = s1 + s3; + w1[0] = s0 - s2; + w1[1] = s3 - s1; + + w0 += 2; + }while(T>1; + s1 = (w0[0] - w1[0])>>1; + w0[0] = s0 + s2; + w0[1] = s1 + s3; + w1[0] = s0 - s2; + w1[1] = s3 - s1; + + w0 += 2; + }while(w0>1); + + switch(step) { +#if defined(ONLY_C) + default: + T=(step>=4)?(sincos_lookup0+(step>>1)):sincos_lookup1; + do{ + REG_TYPE s0 = x[0]; + REG_TYPE s1 = -x[1]; + XPROD31( s0, s1, T[0], T[1], x, x+1); T+=step; + x +=2; + }while(x>1; + t1 = (*T++)>>1; + do{ + s0 = x[0]; + s1 = -x[1]; + t0 += (v0 = (*V++)>>1); + t1 += (v1 = (*V++)>>1); + XPROD31( s0, s1, t0, t1, x, x+1 ); + + s0 = x[2]; + s1 = -x[3]; + v0 += (t0 = (*T++)>>1); + v1 += (t1 = (*T++)>>1); + XPROD31( s0, s1, v0, v1, x+2, x+3 ); + + x += 4; + }while(x>2); + t1 += (q1 = (v1-t1)>>2); + s0 = x[0]; + s1 = -x[1]; + XPROD31( s0, s1, t0, t1, x, x+1 ); + t0 = v0-q0; + t1 = v1-q1; + s0 = x[2]; + s1 = -x[3]; + XPROD31( s0, s1, t0, t1, x+2, x+3 ); + + t0 = *T++; + t1 = *T++; + v0 += (q0 = (t0-v0)>>2); + v1 += (q1 = (t1-v1)>>2); + s0 = x[4]; + s1 = -x[5]; + XPROD31( s0, s1, v0, v1, x+4, x+5 ); + v0 = t0-q0; + v1 = t1-q1; + s0 = x[6]; + s1 = -x[7]; + XPROD31( s0, s1, v0, v1, x+5, x+6 ); + + x+=8; + }while(x>1,step); + mdct_butterflies(in,n>>1,shift); + mdct_bitreverse(in,n,shift); + mdct_step7(in,n,step); + mdct_step8(in,n,step>>2); +#else + step = mdct_backwardARM(n, in); + if (step < 1) + mdct_step8(in,n,step); +#endif +} + +#if defined(ONLY_C) +void mdct_shift_right(int n, DATA_TYPE *in, DATA_TYPE *right){ + int i; + n>>=2; + in+=1; + + for(i=0;i>1 : n0>>1); + DATA_TYPE *r=right+(lW ? n1>>2 : n0>>2); + DATA_TYPE *post; + LOOKUP_T *wR=(W && lW ? w1+(n1>>1) : w0+(n0>>1)); + LOOKUP_T *wL=(W && lW ? w1 : w0 ); + + int preLap=(lW && !W ? (n1>>2)-(n0>>2) : 0 ); + int halfLap=(lW && W ? (n1>>2) : (n0>>2) ); + int postLap=(!lW && W ? (n1>>2)-(n0>>2) : 0 ); + int n,off; + + /* preceeding direct-copy lapping from previous frame, if any */ + if(preLap){ + n = (endpost){ + *out = CLIP_TO_15((*--r)>>9); + out+=step; + } +#else + out = mdct_unroll_prelap(out,post,r,step); + n -= off; + if (n < 0) + n = 0; + r -= n; +#endif + } + + /* cross-lap; two halves due to wrap-around */ + n = (endpost){ + l-=2; + *out = CLIP_TO_15((MULT31(*--r,*--wR) + MULT31(*l,*wL++))>>9); + out+=step; + } +#else + out = mdct_unroll_part2(out, post, l, r, step, wL, wR); + n -= off; + if (n < 0) + n = 0; + l -= 2*n; + r -= n; + wR -= n; + wL += n; +#endif + + n = (end>9); + out+=step; + l+=2; + } +#else + out = mdct_unroll_part3(out, post, l, r, step, wL, wR); + n -= off; + if (n < 0) + n = 0; + l += 2*n; + r += n; + wR -= n; + wL += n; +#endif + + /* preceeding direct-copy lapping from previous frame, if any */ + if(postLap){ + n = (end>9); + out+=step; + l+=2; + } +#else + out = mdct_unroll_postlap(out,post,l,step); +#endif + } +} + diff --git a/Tremolo/mdct.h b/Tremolo/mdct.h new file mode 100644 index 0000000..5e865d0 --- /dev/null +++ b/Tremolo/mdct.h @@ -0,0 +1,59 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: modified discrete cosine transform prototypes + + ********************************************************************/ + +#ifndef _OGG_mdct_H_ +#define _OGG_mdct_H_ + +#include "ivorbiscodec.h" +#include "misc.h" + +#define DATA_TYPE ogg_int32_t +#define REG_TYPE register ogg_int32_t + +#ifdef _LOW_ACCURACY_ +#define cPI3_8 (0x0062) +#define cPI2_8 (0x00b5) +#define cPI1_8 (0x00ed) +#else +#define cPI3_8 (0x30fbc54d) +#define cPI2_8 (0x5a82799a) +#define cPI1_8 (0x7641af3d) +#endif + +extern void mdct_backward(int n, DATA_TYPE *in); +extern void mdct_shift_right(int n, DATA_TYPE *in, DATA_TYPE *right); +extern void mdct_unroll_lap(int n0,int n1, + int lW,int W, + DATA_TYPE *in,DATA_TYPE *right, + LOOKUP_T *w0,LOOKUP_T *w1, + ogg_int16_t *out, + int step, + int start,int end /* samples, this frame */); + +#endif + + + + + + + + + + + + diff --git a/Tremolo/mdctARM.s b/Tremolo/mdctARM.s new file mode 100644 index 0000000..2141c4a --- /dev/null +++ b/Tremolo/mdctARM.s @@ -0,0 +1,1187 @@ +@ Tremolo library +@ Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd + + .text + + @ full accuracy version + + .global mdct_backwardARM + .global mdct_shift_right + .global mdct_unroll_prelap + .global mdct_unroll_part2 + .global mdct_unroll_part3 + .global mdct_unroll_postlap + + .extern sincos_lookup0 + .extern sincos_lookup1 + +mdct_unroll_prelap: + @ r0 = out + @ r1 = post + @ r2 = r + @ r3 = step + STMFD r13!,{r4-r7,r14} + MVN r4, #0x8000 + MOV r3, r3, LSL #1 + SUB r1, r2, r1 @ r1 = r - post + SUBS r1, r1, #16 @ r1 = r - post - 16 + BLT unroll_over +unroll_loop: + LDMDB r2!,{r5,r6,r7,r12} + + MOV r5, r5, ASR #9 @ r5 = (*--r)>>9 + MOV r6, r6, ASR #9 @ r6 = (*--r)>>9 + MOV r7, r7, ASR #9 @ r7 = (*--r)>>9 + MOV r12,r12,ASR #9 @ r12= (*--r)>>9 + + MOV r14,r12,ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r12,r4, r14,ASR #31 + STRH r12,[r0], r3 + + MOV r14,r7, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r7, r4, r14,ASR #31 + STRH r7, [r0], r3 + + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r3 + + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + + SUBS r1, r1, #16 + BGE unroll_loop + +unroll_over: + ADDS r1, r1, #16 + BLE unroll_end +unroll_loop2: + LDR r5,[r2,#-4]! + @ stall + @ stall (Xscale) + MOV r5, r5, ASR #9 @ r5 = (*--r)>>9 + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + SUBS r1, r1, #4 + BGT unroll_loop2 +unroll_end: + LDMFD r13!,{r4-r7,PC} + +mdct_unroll_postlap: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = step + STMFD r13!,{r4-r7,r14} + MVN r4, #0x8000 + MOV r3, r3, LSL #1 + SUB r1, r1, r2 @ r1 = post - l + MOV r1, r1, ASR #1 @ r1 = (post - l)>>1 + SUBS r1, r1, #16 @ r1 = ((post - l)>>1) - 4 + BLT unroll_over3 +unroll_loop3: + LDR r12,[r2],#8 + LDR r7, [r2],#8 + LDR r6, [r2],#8 + LDR r5, [r2],#8 + + RSB r12,r12,#0 + RSB r5, r5, #0 + RSB r6, r6, #0 + RSB r7, r7, #0 + + MOV r12, r12,ASR #9 @ r12= (-*l)>>9 + MOV r5, r5, ASR #9 @ r5 = (-*l)>>9 + MOV r6, r6, ASR #9 @ r6 = (-*l)>>9 + MOV r7, r7, ASR #9 @ r7 = (-*l)>>9 + + MOV r14,r12,ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r12,r4, r14,ASR #31 + STRH r12,[r0], r3 + + MOV r14,r7, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r7, r4, r14,ASR #31 + STRH r7, [r0], r3 + + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r3 + + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + + SUBS r1, r1, #16 + BGE unroll_loop3 + +unroll_over3: + ADDS r1, r1, #16 + BLE unroll_over4 +unroll_loop4: + LDR r5,[r2], #8 + @ stall + @ stall (Xscale) + RSB r5, r5, #0 + MOV r5, r5, ASR #9 @ r5 = (-*l)>>9 + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + SUBS r1, r1, #4 + BGT unroll_loop4 +unroll_over4: + LDMFD r13!,{r4-r7,PC} + +mdct_unroll_part2: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = r + @ <> = step + @ <> = wL + @ <> = wR + MOV r12,r13 + STMFD r13!,{r4,r6-r11,r14} + LDMFD r12,{r8,r9,r10} @ r8 = step + @ r9 = wL + @ r10= wR + MVN r4, #0x8000 + MOV r8, r8, LSL #1 + SUBS r1, r3, r1 @ r1 = (r - post) + BLE unroll_over5 +unroll_loop5: + LDR r12,[r2, #-8]! @ r12= *l (but l -= 2 first) + LDR r11,[r9],#4 @ r11= *wL++ + LDR r7, [r3, #-4]! @ r7 = *--r + LDR r6, [r10,#-4]! @ r6 = *--wR + + @ Can save a cycle here, at the cost of 1bit errors in rounding + SMULL r14,r11,r12,r11 @ (r14,r11) = *l * *wL++ + SMULL r14,r6, r7, r6 @ (r14,r6) = *--r * *--wR + ADD r6, r6, r11 + MOV r6, r6, ASR #8 + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r8 + + SUBS r1, r1, #4 + BGT unroll_loop5 + +unroll_over5: + LDMFD r13!,{r4,r6-r11,PC} + +mdct_unroll_part3: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = r + @ <> = step + @ <> = wL + @ <> = wR + MOV r12,r13 + STMFD r13!,{r4,r6-r11,r14} + LDMFD r12,{r8,r9,r10} @ r8 = step + @ r9 = wL + @ r10= wR + MVN r4, #0x8000 + MOV r8, r8, LSL #1 + SUBS r1, r1, r3 @ r1 = (post - r) + BLE unroll_over6 +unroll_loop6: + LDR r12,[r2],#8 @ r12= *l (but l += 2 first) + LDR r11,[r9],#4 @ r11= *wL++ + LDR r7, [r3],#4 @ r7 = *r++ + LDR r6, [r10,#-4]! @ r6 = *--wR + + @ Can save a cycle here, at the cost of 1bit errors in rounding + SMULL r14,r11,r12,r11 @ (r14,r11) = *l * *wL++ + SMULL r14,r6, r7, r6 @ (r14,r6) = *--r * *--wR + SUB r6, r6, r11 + MOV r6, r6, ASR #8 + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r8 + + SUBS r1, r1, #4 + BGT unroll_loop6 + +unroll_over6: + LDMFD r13!,{r4,r6-r11,PC} + +mdct_shift_right: + @ r0 = n + @ r1 = in + @ r2 = right + STMFD r13!,{r4-r11,r14} + + MOV r0, r0, LSR #2 @ n >>= 2 + ADD r1, r1, #4 + + SUBS r0, r0, #8 + BLT sr_less_than_8 +sr_loop: + LDR r3, [r1], #8 + LDR r4, [r1], #8 + LDR r5, [r1], #8 + LDR r6, [r1], #8 + LDR r7, [r1], #8 + LDR r8, [r1], #8 + LDR r12,[r1], #8 + LDR r14,[r1], #8 + SUBS r0, r0, #8 + STMIA r2!,{r3,r4,r5,r6,r7,r8,r12,r14} + BGE sr_loop +sr_less_than_8: + ADDS r0, r0, #8 + BEQ sr_end +sr_loop2: + LDR r3, [r1], #8 + SUBS r0, r0, #1 + STR r3, [r2], #4 + BGT sr_loop2 +sr_end: + LDMFD r13!,{r4-r11,PC} + +mdct_backwardARM: + @ r0 = n + @ r1 = in + STMFD r13!,{r4-r11,r14} + + MOV r2,#1<<4 @ r2 = 1<>1) + ADD r14,r1, r0 @ r14= in+(n>>2) + SUB r4, r4, #3*4 @ r4 = aX = in+n2-3 + LDR r5, =sincos_lookup0 @ r5 = T=sincos_lookup0 + +presymmetry_loop1: + LDR r7, [r4,#8] @ r6 = s2 = aX[2] + LDR r11,[r5,#4] @ r11= T[1] + LDR r6, [r4] @ r6 = s0 = aX[0] + LDR r10,[r5],r2,LSL #2 @ r10= T[0] T += step + + @ XPROD31(s0, s2, T[0], T[1], 0xaX[0], &ax[2]) + SMULL r8, r9, r7, r11 @ (r8, r9) = s2*T[1] + @ stall + @ stall ? + SMLAL r8, r9, r6, r10 @ (r8, r9) += s0*T[0] + RSB r6, r6, #0 + @ stall ? + SMULL r8, r12,r7, r10 @ (r8, r12) = s2*T[0] + MOV r9, r9, LSL #1 + @ stall ? + SMLAL r8, r12,r6, r11 @ (r8, r12) -= s0*T[1] + STR r9, [r4],#-16 @ aX[0] = r9 + CMP r4,r14 + MOV r12,r12,LSL #1 + STR r12,[r4,#8+16] @ aX[2] = r12 + + BGE presymmetry_loop1 @ while (aX >= in+n4) + +presymmetry_loop2: + LDR r6,[r4] @ r6 = s0 = aX[0] + LDR r10,[r5,#4] @ r10= T[1] + LDR r7,[r4,#8] @ r6 = s2 = aX[2] + LDR r11,[r5],-r2,LSL #2 @ r11= T[0] T -= step + + @ XPROD31(s0, s2, T[1], T[0], 0xaX[0], &ax[2]) + SMULL r8, r9, r6, r10 @ (r8, r9) = s0*T[1] + @ stall + @ stall ? + SMLAL r8, r9, r7, r11 @ (r8, r9) += s2*T[0] + RSB r6, r6, #0 + @ stall ? + SMULL r8, r12,r7, r10 @ (r8, r12) = s2*T[1] + MOV r9, r9, LSL #1 + @ stall ? + SMLAL r8, r12,r6, r11 @ (r8, r12) -= s0*T[0] + STR r9, [r4],#-16 @ aX[0] = r9 + CMP r4,r1 + MOV r12,r12,LSL #1 + STR r12,[r4,#8+16] @ aX[2] = r12 + + BGE presymmetry_loop2 @ while (aX >= in) + + @ r0 = n + @ r1 = in + @ r2 = step + @ r3 = shift + STMFD r13!,{r3} + LDR r5, =sincos_lookup0 @ r5 = T=sincos_lookup0 + ADD r4, r1, r0, LSL #1 @ r4 = aX = in+(n>>1) + SUB r4, r4, #4*4 @ r4 = aX = in+(n>>1)-4 + LDR r11,[r5,#4] @ r11= T[1] + LDR r10,[r5],r2, LSL #2 @ r10= T[0] T += step +presymmetry_loop3: + LDR r8,[r1],#16 @ r8 = ro0 = bX[0] + LDR r9,[r1,#8-16] @ r9 = ro2 = bX[2] + LDR r6,[r4] @ r6 = ri0 = aX[0] + + @ XNPROD31( ro2, ro0, T[1], T[0], 0xaX[0], &aX[2] ) + @ aX[0] = (ro2*T[1] - ro0*T[0])>>31 aX[2] = (ro0*T[1] + ro2*T[0])>>31 + SMULL r14,r12,r8, r11 @ (r14,r12) = ro0*T[1] + RSB r8,r8,#0 @ r8 = -ro0 + @ Stall ? + SMLAL r14,r12,r9, r10 @ (r14,r12) += ro2*T[0] + LDR r7,[r4,#8] @ r7 = ri2 = aX[2] + @ Stall ? + SMULL r14,r3, r9, r11 @ (r14,r3) = ro2*T[1] + MOV r12,r12,LSL #1 + LDR r11,[r5,#4] @ r11= T[1] + SMLAL r14,r3, r8, r10 @ (r14,r3) -= ro0*T[0] + LDR r10,[r5],r2, LSL #2 @ r10= T[0] T += step + STR r12,[r4,#8] + MOV r3, r3, LSL #1 + STR r3, [r4],#-16 + + @ XNPROD31( ri2, ri0, T[0], T[1], 0xbX[0], &bX[2] ) + @ bX[0] = (ri2*T[0] - ri0*T[1])>>31 bX[2] = (ri0*T[0] + ri2*T[1])>>31 + SMULL r14,r12,r6, r10 @ (r14,r12) = ri0*T[0] + RSB r6,r6,#0 @ r6 = -ri0 + @ stall ? + SMLAL r14,r12,r7, r11 @ (r14,r12) += ri2*T[1] + @ stall ? + @ stall ? + SMULL r14,r3, r7, r10 @ (r14,r3) = ri2*T[0] + MOV r12,r12,LSL #1 + @ stall ? + SMLAL r14,r3, r6, r11 @ (r14,r3) -= ri0*T[1] + CMP r4,r1 + STR r12,[r1,#8-16] + MOV r3, r3, LSL #1 + STR r3, [r1,#-16] + + BGE presymmetry_loop3 + + SUB r1,r1,r0 @ r1 = in -= n>>2 (i.e. restore in) + + LDR r3,[r13] + STR r2,[r13,#-4]! + + @ mdct_butterflies + @ r0 = n = (points * 2) + @ r1 = in = x + @ r2 = i + @ r3 = shift + STMFD r13!,{r0-r1} + RSBS r4,r3,#6 @ r4 = stages = 7-shift then --stages + LDR r5,=sincos_lookup0 + BLE no_generics + MOV r14,#4 @ r14= 4 (i=0) + MOV r6, r14,LSL r3 @ r6 = (4<>i = POINTS + MOV r2, r14,LSR #2 @ r2 = (1<>1) + ADD r7,r1,r0,LSL #1 @ r7 = x1+4 = x + POINTS + ADD r12,r5,#1024*4 @ r12= sincos_lookup0+1024 + +mdct_bufferfly_generic_loop1: + LDMDB r7!,{r2,r3,r8,r11} @ r2 = x1[0] + @ r3 = x1[1] + @ r8 = x1[2] + @ r11= x1[3] x1 -= 4 + LDMDB r1!,{r4,r9,r10,r14} @ r4 = x2[0] + @ r9 = x2[1] + @ r10= x2[2] + @ r14= x2[3] x2 -= 4 + + SUB r2, r2, r3 @ r2 = s0 = x1[0] - x1[1] + ADD r3, r2, r3, LSL #1 @ r3 = x1[0] + x1[1] (-> x1[0]) + SUB r11,r11,r8 @ r11= s1 = x1[3] - x1[2] + ADD r8, r11,r8, LSL #1 @ r8 = x1[3] + x1[2] (-> x1[2]) + SUB r9, r9, r4 @ r9 = s2 = x2[1] - x2[0] + ADD r4, r9, r4, LSL #1 @ r4 = x2[1] + x2[0] (-> x1[1]) + SUB r14,r14,r10 @ r14= s3 = x2[3] - x2[2] + ADD r10,r14,r10,LSL #1 @ r10= x2[3] + x2[2] (-> x1[3]) + STMIA r7,{r3,r4,r8,r10} + + @ r0 = points + @ r1 = x2 + @ r2 = s0 + @ r3 free + @ r4 free + @ r5 = T + @ r6 = step + @ r7 = x1 + @ r8 free + @ r9 = s2 + @ r10 free + @ r11= s1 + @ r12= limit + @ r14= s3 + + LDR r8, [r5,#4] @ r8 = T[1] + LDR r10,[r5],r6,LSL #2 @ r10= T[0] T += step + + @ XPROD31(s1, s0, T[0], T[1], &x2[0], &x2[2]) + @ x2[0] = (s1*T[0] + s0*T[1])>>31 x2[2] = (s0*T[0] - s1*T[1])>>31 + @ stall Xscale + SMULL r4, r3, r2, r8 @ (r4, r3) = s0*T[1] + SMLAL r4, r3, r11,r10 @ (r4, r3) += s1*T[0] + RSB r11,r11,#0 + SMULL r11,r4, r8, r11 @ (r11,r4) = -s1*T[1] + SMLAL r11,r4, r2, r10 @ (r11,r4) += s0*T[0] + MOV r2, r3, LSL #1 @ r2 = r3<<1 = Value for x2[0] + + @ XPROD31(s2, s3, T[0], T[1], &x2[1], &x2[3]) + @ x2[1] = (s2*T[0] + s3*T[1])>>31 x2[3] = (s3*T[0] - s2*T[1])>>31 + SMULL r11,r3, r9, r10 @ (r11,r3) = s2*T[0] + MOV r4, r4, LSL #1 @ r4 = r4<<1 = Value for x2[2] + SMLAL r11,r3, r14,r8 @ (r11,r3) += s3*T[1] + RSB r9, r9, #0 + SMULL r10,r11,r14,r10 @ (r10,r11) = s3*T[0] + MOV r3, r3, LSL #1 @ r3 = r3<<1 = Value for x2[1] + SMLAL r10,r11,r9,r8 @ (r10,r11) -= s2*T[1] + CMP r5, r12 + MOV r11,r11,LSL #1 @ r11= r11<<1 = Value for x2[3] + + STMIA r1,{r2,r3,r4,r11} + + BLT mdct_bufferfly_generic_loop1 + + SUB r12,r12,#1024*4 +mdct_bufferfly_generic_loop2: + LDMDB r7!,{r2,r3,r9,r10} @ r2 = x1[0] + @ r3 = x1[1] + @ r9 = x1[2] + @ r10= x1[3] x1 -= 4 + LDMDB r1!,{r4,r8,r11,r14} @ r4 = x2[0] + @ r8 = x2[1] + @ r11= x2[2] + @ r14= x2[3] x2 -= 4 + + SUB r2, r2, r3 @ r2 = s0 = x1[0] - x1[1] + ADD r3, r2, r3, LSL #1 @ r3 = x1[0] + x1[1] (-> x1[0]) + SUB r9, r9,r10 @ r9 = s1 = x1[2] - x1[3] + ADD r10,r9,r10, LSL #1 @ r10= x1[2] + x1[3] (-> x1[2]) + SUB r4, r4, r8 @ r4 = s2 = x2[0] - x2[1] + ADD r8, r4, r8, LSL #1 @ r8 = x2[0] + x2[1] (-> x1[1]) + SUB r14,r14,r11 @ r14= s3 = x2[3] - x2[2] + ADD r11,r14,r11,LSL #1 @ r11= x2[3] + x2[2] (-> x1[3]) + STMIA r7,{r3,r8,r10,r11} + + @ r0 = points + @ r1 = x2 + @ r2 = s0 + @ r3 free + @ r4 = s2 + @ r5 = T + @ r6 = step + @ r7 = x1 + @ r8 free + @ r9 = s1 + @ r10 free + @ r11 free + @ r12= limit + @ r14= s3 + + LDR r8, [r5,#4] @ r8 = T[1] + LDR r10,[r5],-r6,LSL #2 @ r10= T[0] T -= step + + @ XNPROD31(s0, s1, T[0], T[1], &x2[0], &x2[2]) + @ x2[0] = (s0*T[0] - s1*T[1])>>31 x2[2] = (s1*T[0] + s0*T[1])>>31 + @ stall Xscale + SMULL r3, r11,r2, r8 @ (r3, r11) = s0*T[1] + SMLAL r3, r11,r9, r10 @ (r3, r11) += s1*T[0] + RSB r9, r9, #0 + SMULL r3, r2, r10,r2 @ (r3, r2) = s0*T[0] + SMLAL r3, r2, r9, r8 @ (r3, r2) += -s1*T[1] + MOV r9, r11,LSL #1 @ r9 = r11<<1 = Value for x2[2] + + @ XNPROD31(s3, s2, T[0], T[1], &x2[1], &x2[3]) + @ x2[1] = (s3*T[0] - s2*T[1])>>31 x2[3] = (s2*T[0] + s3*T[1])>>31 + SMULL r3, r11,r4, r10 @ (r3,r11) = s2*T[0] + MOV r2, r2, LSL #1 @ r2 = r2<<1 = Value for x2[0] + SMLAL r3, r11,r14,r8 @ (r3,r11) += s3*T[1] + RSB r4, r4, #0 + SMULL r10,r3,r14,r10 @ (r10,r3) = s3*T[0] + MOV r11,r11,LSL #1 @ r11= r11<<1 = Value for x2[3] + SMLAL r10,r3, r4, r8 @ (r10,r3) -= s2*T[1] + CMP r5, r12 + MOV r3, r3, LSL #1 @ r3 = r3<<1 = Value for x2[1] + + STMIA r1,{r2,r3,r9,r11} + + BGT mdct_bufferfly_generic_loop2 + + LDR r2,[r13],#4 @ unstack r2 + ADD r1, r1, r0, LSL #2 @ r1 = x+POINTS*j + @ stall Xscale + SUBS r2, r2, #1 @ r2-- (j++) + BGT mdct_butterflies_loop2 + + LDMFD r13!,{r4,r14} + + LDR r1,[r13,#4] + + SUBS r4, r4, #1 @ stages-- + MOV r14,r14,LSL #1 @ r14= 4< x[16] + SUB r9, r9, r10 @ r9 = s1 = x[18] - x[19] + ADD r10,r9, r10,LSL #1 @ r10= x[18] + x[19] -> x[18] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[17] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[19] + STMIA r4!,{r6,r7,r10,r11} + + LDR r6,cPI1_8 + LDR r7,cPI3_8 + + @ XNPROD31( s0, s1, cPI3_8, cPI1_8, &x[ 0], &x[ 2] ) + @ x[0] = s0*cPI3_8 - s1*cPI1_8 x[2] = s1*cPI3_8 + s0*cPI1_8 + @ stall Xscale + SMULL r14,r11,r5, r6 @ (r14,r11) = s0*cPI1_8 + SMLAL r14,r11,r9, r7 @ (r14,r11) += s1*cPI3_8 + RSB r9, r9, #0 + SMULL r14,r5, r7, r5 @ (r14,r5) = s0*cPI3_8 + SMLAL r14,r5, r9, r6 @ (r14,r5) -= s1*cPI1_8 + MOV r11,r11,LSL #1 + MOV r5, r5, LSL #1 + + @ XPROD31 ( s2, s3, cPI1_8, cPI3_8, &x[ 1], &x[ 3] ) + @ x[1] = s2*cPI1_8 + s3*cPI3_8 x[3] = s3*cPI1_8 - s2*cPI3_8 + SMULL r14,r9, r8, r6 @ (r14,r9) = s2*cPI1_8 + SMLAL r14,r9, r12,r7 @ (r14,r9) += s3*cPI3_8 + RSB r8,r8,#0 + SMULL r14,r12,r6, r12 @ (r14,r12) = s3*cPI1_8 + SMLAL r14,r12,r8, r7 @ (r14,r12) -= s2*cPI3_8 + MOV r9, r9, LSL #1 + MOV r12,r12,LSL #1 + STMIA r1!,{r5,r9,r11,r12} + + @ block2 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[20] + @ r6 = x[21] + @ r9 = x[22] + @ r10= x[23] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[4] + @ r8 = x[5] + @ r11= x[6] + @ r12= x[7] + SUB r5, r5, r6 @ r5 = s0 = x[20] - x[21] + ADD r6, r5, r6, LSL #1 @ r6 = x[20] + x[21] -> x[20] + SUB r9, r9, r10 @ r9 = s1 = x[22] - x[23] + ADD r10,r9, r10,LSL #1 @ r10= x[22] + x[23] -> x[22] + SUB r8, r8, r7 @ r8 = s2 = x[ 5] - x[ 4] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 5] + x[ 4] -> x[21] + SUB r12,r12,r11 @ r12= s3 = x[ 7] - x[ 6] + ADD r11,r12,r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[23] + LDR r14,cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + SMULL r6, r5, r14,r5 @ (r6,r5) = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + SMULL r6, r8, r14,r8 @ (r6,r8) = (s3+s2)*cPI2_8 + MOV r5, r5, LSL #1 + SMULL r6, r9, r14,r9 @ (r6,r9) = (s0+s1)*cPI2_8 + MOV r8, r8, LSL #1 + SMULL r6, r12,r14,r12 @ (r6,r12) = (s3-s2)*cPI2_8 + MOV r9, r9, LSL #1 + MOV r12,r12,LSL #1 + STMIA r1!,{r5,r8,r9,r12} + + @ block3 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[24] + @ r6 = x[25] + @ r9 = x[25] + @ r10= x[26] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[8] + @ r8 = x[9] + @ r11= x[10] + @ r12= x[11] + SUB r5, r5, r6 @ r5 = s0 = x[24] - x[25] + ADD r6, r5, r6, LSL #1 @ r6 = x[24] + x[25] -> x[25] + SUB r9, r9, r10 @ r9 = s1 = x[26] - x[27] + ADD r10,r9, r10,LSL #1 @ r10= x[26] + x[27] -> x[26] + SUB r8, r8, r7 @ r8 = s2 = x[ 9] - x[ 8] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 9] + x[ 8] -> x[25] + SUB r12,r12,r11 @ r12= s3 = x[11] - x[10] + ADD r11,r12,r11, LSL #1 @ r11= x[11] + x[10] -> x[27] + STMIA r4!,{r6,r7,r10,r11} + + LDR r6,cPI3_8 + LDR r7,cPI1_8 + + @ XNPROD31( s0, s1, cPI1_8, cPI3_8, &x[ 8], &x[10] ) + @ x[8] = s0*cPI1_8 - s1*cPI3_8 x[10] = s1*cPI1_8 + s0*cPI3_8 + @ stall Xscale + SMULL r14,r11,r5, r6 @ (r14,r11) = s0*cPI3_8 + SMLAL r14,r11,r9, r7 @ (r14,r11) += s1*cPI1_8 + RSB r9, r9, #0 + SMULL r14,r5, r7, r5 @ (r14,r5) = s0*cPI1_8 + SMLAL r14,r5, r9, r6 @ (r14,r5) -= s1*cPI3_8 + MOV r11,r11,LSL #1 + MOV r5, r5, LSL #1 + + @ XPROD31 ( s2, s3, cPI3_8, cPI1_8, &x[ 9], &x[11] ) + @ x[9] = s2*cPI3_8 + s3*cPI1_8 x[11] = s3*cPI3_8 - s2*cPI1_8 + SMULL r14,r9, r8, r6 @ (r14,r9) = s2*cPI3_8 + SMLAL r14,r9, r12,r7 @ (r14,r9) += s3*cPI1_8 + RSB r8,r8,#0 + SMULL r14,r12,r6, r12 @ (r14,r12) = s3*cPI3_8 + SMLAL r14,r12,r8, r7 @ (r14,r12) -= s2*cPI1_8 + MOV r9, r9, LSL #1 + MOV r12,r12,LSL #1 + STMIA r1!,{r5,r9,r11,r12} + + @ block4 + LDMIA r4,{r5,r6,r10,r11} @ r5 = x[28] + @ r6 = x[29] + @ r10= x[30] + @ r11= x[31] + LDMIA r1,{r8,r9,r12,r14} @ r8 = x[12] + @ r9 = x[13] + @ r12= x[14] + @ r14= x[15] + SUB r5, r5, r6 @ r5 = s0 = x[28] - x[29] + ADD r6, r5, r6, LSL #1 @ r6 = x[28] + x[29] -> x[28] + SUB r7, r14,r12 @ r7 = s3 = x[15] - x[14] + ADD r12,r7, r12, LSL #1 @ r12= x[15] + x[14] -> x[31] + SUB r10,r10,r11 @ r10= s1 = x[30] - x[31] + ADD r11,r10,r11,LSL #1 @ r11= x[30] + x[31] -> x[30] + SUB r14, r8, r9 @ r14= s2 = x[12] - x[13] + ADD r9, r14, r9, LSL #1 @ r9 = x[12] + x[13] -> x[29] + STMIA r4!,{r6,r9,r11,r12} + STMIA r1!,{r5,r7,r10,r14} + + @ mdct_butterfly16 (1st version) + @ block 1 + SUB r1,r1,#16*4 + ADD r4,r1,#8*4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[ 8] + @ r6 = x[ 9] + @ r9 = x[10] + @ r10= x[11] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[0] + @ r8 = x[1] + @ r11= x[2] + @ r12= x[3] + SUB r5, r5, r6 @ r5 = s0 = x[ 8] - x[ 9] + ADD r6, r5, r6, LSL #1 @ r6 = x[ 8] + x[ 9] -> x[ 8] + SUB r9, r9, r10 @ r9 = s1 = x[10] - x[11] + ADD r10,r9, r10,LSL #1 @ r10= x[10] + x[11] -> x[10] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[ 9] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[11] + LDR r14,cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + SMULL r6, r5, r14,r5 @ (r6,r5) = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + SMULL r6, r8, r14,r8 @ (r6,r8) = (s3+s2)*cPI2_8 + MOV r5, r5, LSL #1 + SMULL r6, r9, r14,r9 @ (r6,r9) = (s0+s1)*cPI2_8 + MOV r8, r8, LSL #1 + SMULL r6, r12,r14,r12 @ (r6,r12) = (s3-s2)*cPI2_8 + MOV r9, r9, LSL #1 + MOV r12,r12,LSL #1 + STMIA r1!,{r5,r8,r9,r12} + + @ block4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[12] + @ r6 = x[13] + @ r9 = x[14] + @ r10= x[15] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[ 4] + @ r8 = x[ 5] + @ r11= x[ 6] + @ r12= x[ 7] + SUB r14,r7, r8 @ r14= s0 = x[ 4] - x[ 5] + ADD r8, r14,r8, LSL #1 @ r8 = x[ 4] + x[ 5] -> x[13] + SUB r7, r12,r11 @ r7 = s1 = x[ 7] - x[ 6] + ADD r11,r7, r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[15] + SUB r5, r5, r6 @ r5 = s2 = x[12] - x[13] + ADD r6, r5, r6, LSL #1 @ r6 = x[12] + x[13] -> x[12] + SUB r12,r9, r10 @ r12= s3 = x[14] - x[15] + ADD r10,r12,r10,LSL #1 @ r10= x[14] + x[15] -> x[14] + STMIA r4!,{r6,r8,r10,r11} + STMIA r1!,{r5,r7,r12,r14} + + @ mdct_butterfly_8 + LDMDB r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMDB r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ mdct_butterfly_8 + LDMIA r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMIA r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ block 2 + ADD r1,r1,#16*4-8*4 + ADD r4,r1,#8*4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[ 8] + @ r6 = x[ 9] + @ r9 = x[10] + @ r10= x[11] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[0] + @ r8 = x[1] + @ r11= x[2] + @ r12= x[3] + SUB r5, r5, r6 @ r5 = s0 = x[ 8] - x[ 9] + ADD r6, r5, r6, LSL #1 @ r6 = x[ 8] + x[ 9] -> x[ 8] + SUB r9, r9, r10 @ r9 = s1 = x[10] - x[11] + ADD r10,r9, r10,LSL #1 @ r10= x[10] + x[11] -> x[10] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[ 9] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[11] + LDR r14,cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + SMULL r6, r5, r14,r5 @ (r6,r5) = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + SMULL r6, r8, r14,r8 @ (r6,r8) = (s3+s2)*cPI2_8 + MOV r5, r5, LSL #1 + SMULL r6, r9, r14,r9 @ (r6,r9) = (s0+s1)*cPI2_8 + MOV r8, r8, LSL #1 + SMULL r6, r12,r14,r12 @ (r6,r12) = (s3-s2)*cPI2_8 + MOV r9, r9, LSL #1 + MOV r12,r12,LSL #1 + STMIA r1!,{r5,r8,r9,r12} + + @ block4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[12] + @ r6 = x[13] + @ r9 = x[14] + @ r10= x[15] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[ 4] + @ r8 = x[ 5] + @ r11= x[ 6] + @ r12= x[ 7] + SUB r5, r5, r6 @ r5 = s2 = x[12] - x[13] + ADD r6, r5, r6, LSL #1 @ r6 = x[12] + x[13] -> x[12] + SUB r9, r9, r10 @ r9 = s3 = x[14] - x[15] + ADD r10,r9, r10,LSL #1 @ r10= x[14] + x[15] -> x[14] + SUB r14,r7, r8 @ r14= s0 = x[ 4] - x[ 5] + ADD r8, r14,r8, LSL #1 @ r8 = x[ 4] + x[ 5] -> x[13] + SUB r7, r12,r11 @ r7 = s1 = x[ 7] - x[ 6] + ADD r11,r7, r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[15] + STMIA r4!,{r6,r8,r10,r11} + STMIA r1!,{r5,r7,r9,r14} + + @ mdct_butterfly_8 + LDMDB r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMDB r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ mdct_butterfly_8 + LDMIA r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMIA r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + ADD r1,r1,#8*4 + SUBS r0,r0,#64 + BGT mdct_bufferflies_loop3 + + LDMFD r13,{r0-r3} + +mdct_bitreverseARM: + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift + + MOV r4, #0 @ r4 = bit = 0 + ADD r5, r1, r0, LSL #1 @ r5 = w = x + (n>>1) + ADR r6, bitrev + SUB r3, r3, #2 @ r3 = shift -= 2 + SUB r5, r5, #8 +brev_lp: + LDRB r7, [r6, r4, LSR #6] + AND r8, r4, #0x3f + LDRB r8, [r6, r8] + ADD r4, r4, #1 @ bit++ + @ stall XScale + ORR r7, r7, r8, LSL #6 @ r7 = bitrev[bit] + ADD r9, r1, r7, LSR r3 @ r9 = xx = x + (b>>shift) + CMP r5, r9 @ if (w > xx) + LDR r10,[r5],#-8 @ r10 = w[0] w -= 2 + LDRGT r11,[r5,#12] @ r11 = w[1] + LDRGT r12,[r9] @ r12 = xx[0] + LDRGT r14,[r9,#4] @ r14 = xx[1] + STRGT r10,[r9] @ xx[0]= w[0] + STRGT r11,[r9,#4] @ xx[1]= w[1] + STRGT r12,[r5,#8] @ w[0] = xx[0] + STRGT r14,[r5,#12] @ w[1] = xx[1] + CMP r5,r1 + BGT brev_lp + + @ mdct_step7 + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift-2 + + CMP r2, #4 @ r5 = T = (step>=4) ? + LDRGE r5, =sincos_lookup0 @ sincos_lookup0 + + LDRLT r5, =sincos_lookup1 @ sincos_lookup0 + + ADD r7, r1, r0, LSL #1 @ r7 = w1 = x + (n>>1) + ADDGE r5, r5, r2, LSL #1 @ (step>>1) + ADD r8, r5, #1024*4 @ r8 = Ttop +step7_loop1: + LDR r6, [r1] @ r6 = w0[0] + LDR r9, [r1,#4] @ r9 = w0[1] + LDR r10,[r7,#-8]! @ r10= w1[0] w1 -= 2 + LDR r11,[r7,#4] @ r11= w1[1] + LDR r14,[r5,#4] @ r14= T[1] + LDR r12,[r5],r2,LSL #2 @ r12= T[0] T += step + + ADD r6, r6, r10 @ r6 = s0 = w0[0] + w1[0] + SUB r10,r6, r10,LSL #1 @ r10= s1b= w0[0] - w1[0] + SUB r11,r11,r9 @ r11= s1 = w1[1] - w0[1] + ADD r9, r11,r9, LSL #1 @ r9 = s0b= w1[1] + w0[1] + + @ Can save 1 cycle by using SMULL SMLAL - at the cost of being + @ 1 off. + SMULL r0, r3, r6, r14 @ (r0,r3) = s0*T[1] + SMULL r0, r4, r11,r12 @ (r0,r4) += s1*T[0] = s2 + ADD r3, r3, r4 + SMULL r0, r14,r11,r14 @ (r0,r14) = s1*T[1] + SMULL r0, r12,r6, r12 @ (r0,r12) += s0*T[0] = s3 + SUB r14,r14,r12 + + @ r9 = s0b<<1 + @ r10= s1b<<1 + ADD r9, r3, r9, ASR #1 @ r9 = s0b + s2 + SUB r3, r9, r3, LSL #1 @ r3 = s0b - s2 + + SUB r12,r14,r10,ASR #1 @ r12= s3 - s1b + ADD r10,r14,r10,ASR #1 @ r10= s3 + s1b + STR r9, [r1],#4 + STR r10,[r1],#4 @ w0 += 2 + STR r3, [r7] + STR r12,[r7,#4] + + CMP r5,r8 + BLT step7_loop1 + +step7_loop2: + LDR r6, [r1] @ r6 = w0[0] + LDR r9, [r1,#4] @ r9 = w0[1] + LDR r10,[r7,#-8]! @ r10= w1[0] w1 -= 2 + LDR r11,[r7,#4] @ r11= w1[1] + LDR r14,[r5,-r2,LSL #2]! @ r12= T[1] T -= step + LDR r12,[r5,#4] @ r14= T[0] + + ADD r6, r6, r10 @ r6 = s0 = w0[0] + w1[0] + SUB r10,r6, r10,LSL #1 @ r10= s1b= w0[0] - w1[0] + SUB r11,r11,r9 @ r11= s1 = w1[1] - w0[1] + ADD r9, r11,r9, LSL #1 @ r9 = s0b= w1[1] + w0[1] + + @ Can save 1 cycle by using SMULL SMLAL - at the cost of being + @ 1 off. + SMULL r0, r3, r6, r14 @ (r0,r3) = s0*T[0] + SMULL r0, r4, r11,r12 @ (r0,r4) += s1*T[1] = s2 + ADD r3, r3, r4 + SMULL r0, r14,r11,r14 @ (r0,r14) = s1*T[0] + SMULL r0, r12,r6, r12 @ (r0,r12) += s0*T[1] = s3 + SUB r14,r14,r12 + + @ r9 = s0b<<1 + @ r10= s1b<<1 + ADD r9, r3, r9, ASR #1 @ r9 = s0b + s2 + SUB r3, r9, r3, LSL #1 @ r3 = s0b - s2 + + SUB r12,r14,r10,ASR #1 @ r12= s3 - s1b + ADD r10,r14,r10,ASR #1 @ r10= s3 + s1b + STR r9, [r1],#4 + STR r10,[r1],#4 @ w0 += 2 + STR r3, [r7] + STR r12,[r7,#4] + + CMP r1,r7 + BLT step7_loop2 + + LDMFD r13!,{r0-r3} + + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift + MOV r2, r2, ASR #2 @ r2 = step >>= 2 + CMP r2, #0 + CMPNE r2, #1 + BEQ mdct_end + + @ step > 1 (default case) + CMP r2, #4 @ r5 = T = (step>=4) ? + LDRGE r5, =sincos_lookup0 @ sincos_lookup0 + + LDRLT r5, =sincos_lookup1 @ sincos_lookup1 + ADD r7, r1, r0, LSL #1 @ r7 = iX = x + (n>>1) + ADDGE r5, r5, r2, LSL #1 @ (step>>1) +mdct_step8_default: + LDR r6, [r1],#4 @ r6 = s0 = x[0] + LDR r8, [r1],#4 @ r8 = -s1 = x[1] + LDR r12,[r5,#4] @ r12= T[1] + LDR r14,[r5],r2,LSL #2 @ r14= T[0] T += step + RSB r8, r8, #0 @ r8 = s1 + + @ XPROD31(s0, s1, T[0], T[1], x, x+1) + @ x[0] = s0 * T[0] + s1 * T[1] x[1] = s1 * T[0] - s0 * T[1] + SMULL r9, r10, r8, r12 @ (r9,r10) = s1 * T[1] + CMP r1, r7 + SMLAL r9, r10, r6, r14 @ (r9,r10) += s0 * T[0] + RSB r6, r6, #0 @ r6 = -s0 + SMULL r9, r11, r8, r14 @ (r9,r11) = s1 * T[0] + MOV r10,r10,LSL #1 + SMLAL r9, r11, r6, r12 @ (r9,r11) -= s0 * T[1] + STR r10,[r1,#-8] + MOV r11,r11,LSL #1 + STR r11,[r1,#-4] + BLT mdct_step8_default + +mdct_end: + MOV r0, r2 + LDMFD r13!,{r4-r11,PC} + +cPI1_8: + .word 0x7641af3d +cPI2_8: + .word 0x5a82799a +cPI3_8: + .word 0x30fbc54d +bitrev: + .byte 0 + .byte 32 + .byte 16 + .byte 48 + .byte 8 + .byte 40 + .byte 24 + .byte 56 + .byte 4 + .byte 36 + .byte 20 + .byte 52 + .byte 12 + .byte 44 + .byte 28 + .byte 60 + .byte 2 + .byte 34 + .byte 18 + .byte 50 + .byte 10 + .byte 42 + .byte 26 + .byte 58 + .byte 6 + .byte 38 + .byte 22 + .byte 54 + .byte 14 + .byte 46 + .byte 30 + .byte 62 + .byte 1 + .byte 33 + .byte 17 + .byte 49 + .byte 9 + .byte 41 + .byte 25 + .byte 57 + .byte 5 + .byte 37 + .byte 21 + .byte 53 + .byte 13 + .byte 45 + .byte 29 + .byte 61 + .byte 3 + .byte 35 + .byte 19 + .byte 51 + .byte 11 + .byte 43 + .byte 27 + .byte 59 + .byte 7 + .byte 39 + .byte 23 + .byte 55 + .byte 15 + .byte 47 + .byte 31 + .byte 63 + + @ END diff --git a/Tremolo/mdctLARM.s b/Tremolo/mdctLARM.s new file mode 100644 index 0000000..d1bd5e4 --- /dev/null +++ b/Tremolo/mdctLARM.s @@ -0,0 +1,1175 @@ +@ Tremolo library +@ Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd + + .text + + @ low accuracy version + + .global mdct_backwardARM + .global mdct_shift_right + .global mdct_unroll_prelap + .global mdct_unroll_part2 + .global mdct_unroll_part3 + .global mdct_unroll_postlap + + .extern sincos_lookup0 + .extern sincos_lookup1 + +mdct_unroll_prelap: + @ r0 = out + @ r1 = post + @ r2 = r + @ r3 = step + STMFD r13!,{r4-r7,r14} + MVN r4, #0x8000 + MOV r3, r3, LSL #1 + SUB r1, r2, r1 @ r1 = r - post + SUBS r1, r1, #16 @ r1 = r - post - 16 + BLT unroll_over +unroll_loop: + LDMDB r2!,{r5,r6,r7,r12} + + MOV r5, r5, ASR #9 @ r5 = (*--r)>>9 + MOV r6, r6, ASR #9 @ r6 = (*--r)>>9 + MOV r7, r7, ASR #9 @ r7 = (*--r)>>9 + MOV r12,r12,ASR #9 @ r12= (*--r)>>9 + + MOV r14,r12,ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r12,r4, r14,ASR #31 + STRH r12,[r0], r3 + + MOV r14,r7, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r7, r4, r14,ASR #31 + STRH r7, [r0], r3 + + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r3 + + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + + SUBS r1, r1, #16 + BGE unroll_loop + +unroll_over: + ADDS r1, r1, #16 + BLE unroll_end +unroll_loop2: + LDR r5,[r2,#-4]! + @ stall + @ stall (Xscale) + MOV r5, r5, ASR #9 @ r5 = (*--r)>>9 + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + SUBS r1, r1, #4 + BGT unroll_loop2 +unroll_end: + LDMFD r13!,{r4-r7,PC} + +mdct_unroll_postlap: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = step + STMFD r13!,{r4-r7,r14} + MVN r4, #0x8000 + MOV r3, r3, LSL #1 + SUB r1, r1, r2 @ r1 = post - l + MOV r1, r1, ASR #1 @ r1 = (post - l)>>1 + SUBS r1, r1, #16 @ r1 = ((post - l)>>1) - 4 + BLT unroll_over3 +unroll_loop3: + LDR r12,[r2],#8 + LDR r7, [r2],#8 + LDR r6, [r2],#8 + LDR r5, [r2],#8 + + RSB r12,r12,#0 + RSB r5, r5, #0 + RSB r6, r6, #0 + RSB r7, r7, #0 + + MOV r12, r12,ASR #9 @ r12= (-*l)>>9 + MOV r5, r5, ASR #9 @ r5 = (-*l)>>9 + MOV r6, r6, ASR #9 @ r6 = (-*l)>>9 + MOV r7, r7, ASR #9 @ r7 = (-*l)>>9 + + MOV r14,r12,ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r12,r4, r14,ASR #31 + STRH r12,[r0], r3 + + MOV r14,r7, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r7, r4, r14,ASR #31 + STRH r7, [r0], r3 + + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r3 + + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + + SUBS r1, r1, #16 + BGE unroll_loop3 + +unroll_over3: + ADDS r1, r1, #16 + BLE unroll_over4 +unroll_loop4: + LDR r5,[r2], #8 + @ stall + @ stall (Xscale) + RSB r5, r5, #0 + MOV r5, r5, ASR #9 @ r5 = (-*l)>>9 + MOV r14,r5, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r5, r4, r14,ASR #31 + STRH r5, [r0], r3 + SUBS r1, r1, #4 + BGT unroll_loop4 +unroll_over4: + LDMFD r13!,{r4-r7,PC} + +mdct_unroll_part2: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = r + @ <> = step + @ <> = wL + @ <> = wR + MOV r12,r13 + STMFD r13!,{r4,r6-r11,r14} + LDMFD r12,{r8,r9,r10} @ r8 = step + @ r9 = wL + @ r10= wR + MVN r4, #0x8000 + MOV r8, r8, LSL #1 + SUBS r1, r3, r1 @ r1 = (r - post) + BLE unroll_over5 +unroll_loop5: + LDR r12,[r2, #-8]! @ r12= *l (but l -= 2 first) + LDR r7, [r3, #-4]! @ r7 = *--r + LDRB r6, [r10,#-1]! @ r6 = *--wR + LDRB r11,[r9],#1 @ r11= *wL++ + + MOV r12, r12, ASR #8 + @ Can save a cycle here, at the cost of 1bit errors in rounding + MUL r11,r12,r11 @ r11 = *l * *wL++ + MOV r7, r7, ASR #8 + MLA r6, r7, r6, r11 @ r6 = *--r * *--wR + MOV r6, r6, ASR #9 + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r8 + + SUBS r1, r1, #4 + BGT unroll_loop5 + +unroll_over5: + LDMFD r13!,{r4,r6-r11,PC} + +mdct_unroll_part3: + @ r0 = out + @ r1 = post + @ r2 = l + @ r3 = r + @ <> = step + @ <> = wL + @ <> = wR + MOV r12,r13 + STMFD r13!,{r4,r6-r11,r14} + LDMFD r12,{r8,r9,r10} @ r8 = step + @ r9 = wL + @ r10= wR + MVN r4, #0x8000 + MOV r8, r8, LSL #1 + SUBS r1, r1, r3 @ r1 = (post - r) + BLE unroll_over6 +unroll_loop6: + LDR r12,[r2],#8 @ r12= *l (but l += 2 first) + LDR r7, [r3],#4 @ r7 = *r++ + LDRB r11,[r9],#1 @ r11= *wL++ + LDRB r6, [r10,#-1]! @ r6 = *--wR + + @ Can save a cycle here, at the cost of 1bit errors in rounding + MOV r12,r12,ASR #8 + MUL r11,r12,r11 @ (r14,r11) = *l * *wL++ + MOV r7, r7, ASR #8 + MUL r6, r7, r6 @ (r14,r6) = *--r * *--wR + SUB r6, r6, r11 + MOV r6, r6, ASR #9 + MOV r14,r6, ASR #15 + TEQ r14,r14,ASR #31 @ if r14==0 || r14==-1 then in range + EORNE r6, r4, r14,ASR #31 + STRH r6, [r0], r8 + + SUBS r1, r1, #4 + BGT unroll_loop6 + +unroll_over6: + LDMFD r13!,{r4,r6-r11,PC} + +mdct_shift_right: + @ r0 = n + @ r1 = in + @ r2 = right + STMFD r13!,{r4-r11,r14} + + MOV r0, r0, LSR #2 @ n >>= 2 + ADD r1, r1, #4 + + SUBS r0, r0, #8 + BLT sr_less_than_8 +sr_loop: + LDR r3, [r1], #8 + LDR r4, [r1], #8 + LDR r5, [r1], #8 + LDR r6, [r1], #8 + LDR r7, [r1], #8 + LDR r8, [r1], #8 + LDR r12,[r1], #8 + LDR r14,[r1], #8 + SUBS r0, r0, #8 + STMIA r2!,{r3,r4,r5,r6,r7,r8,r12,r14} + BGE sr_loop +sr_less_than_8: + ADDS r0, r0, #8 + BEQ sr_end +sr_loop2: + LDR r3, [r1], #8 + SUBS r0, r0, #1 + STR r3, [r2], #4 + BGT sr_loop2 +sr_end: + LDMFD r13!,{r4-r11,PC} + +mdct_backwardARM: + @ r0 = n + @ r1 = in + STMFD r13!,{r4-r11,r14} + + MOV r2, #1<<4 @ r2 = 1<>1) + ADD r14,r1, r0 @ r14= in+(n>>2) + SUB r4, r4, #3*4 @ r4 = aX = in+n2-3 + LDR r5, =sincos_lookup0 @ r5 = T=sincos_lookup0 + +presymmetry_loop1: + LDR r7, [r4,#8] @ r6 = s2 = aX[2] + LDRB r11,[r5,#1] @ r11= T[1] + LDR r6, [r4],#-16 @ r6 = s0 = aX[0] + LDRB r10,[r5],r2 @ r10= T[0] T += step + MOV r6, r6, ASR #8 + MOV r7, r7, ASR #8 + + @ XPROD31(s0, s2, T[0], T[1], 0xaX[0], &ax[2]) + MUL r9, r6, r10 @ r9 = s0*T[0] + RSB r6, r6, #0 + MLA r9, r7, r11,r9 @ r9 += s2*T[1] + CMP r4, r14 + MUL r12,r7, r10 @ r12 = s2*T[0] + STR r9, [r4,#16] @ aX[0] = r9 + MLA r12,r6, r11,r12 @ r12 -= s0*T[1] + STR r12,[r4,#8+16] @ aX[2] = r12 + + BGE presymmetry_loop1 @ while (aX >= in+n4) + +presymmetry_loop2: + LDR r6, [r4],#-16 @ r6 = s0 = aX[0] + LDRB r10,[r5,#1] @ r10= T[1] + LDR r7, [r4,#16+8] @ r6 = s2 = aX[2] + LDRB r11,[r5],-r2 @ r11= T[0] T -= step + MOV r6, r6, ASR #8 + MOV r7, r7, ASR #8 + + @ XPROD31(s0, s2, T[1], T[0], 0xaX[0], &ax[2]) + MUL r9, r6, r10 @ r9 = s0*T[1] + RSB r6, r6, #0 + MLA r9, r7, r11,r9 @ r9 += s2*T[0] + CMP r4, r1 + MUL r12,r7, r10 @ r12 = s2*T[1] + STR r9, [r4,#16] @ aX[0] = r9 + MLA r12,r6, r11,r12 @ r12 -= s0*T[0] + STR r12,[r4,#8+16] @ aX[2] = r12 + + BGE presymmetry_loop2 @ while (aX >= in) + + @ r0 = n + @ r1 = in + @ r2 = step + @ r3 = shift + STMFD r13!,{r3} + LDR r5, =sincos_lookup0 @ r5 = T=sincos_lookup0 + ADD r4, r1, r0, LSL #1 @ r4 = aX = in+(n>>1) + SUB r4, r4, #4*4 @ r4 = aX = in+(n>>1)-4 + LDRB r11,[r5,#1] @ r11= T[1] + LDRB r10,[r5],r2 @ r10= T[0] T += step +presymmetry_loop3: + LDR r8, [r1],#16 @ r8 = ro0 = bX[0] + LDR r9, [r1,#8-16] @ r9 = ro2 = bX[2] + LDR r6, [r4],#-16 @ r6 = ri0 = aX[0] + LDR r7, [r4,#8+16] @ r7 = ri2 = aX[2] + MOV r8, r8, ASR #8 + MOV r9, r9, ASR #8 + MOV r6, r6, ASR #8 + + @ XNPROD31( ro2, ro0, T[1], T[0], 0xaX[0], &aX[2] ) + @ aX[0] = (ro2*T[1] - ro0*T[0])>>31 aX[2] = (ro0*T[1] + ro2*T[0])>>31 + MUL r12,r8, r11 @ r12 = ro0*T[1] + MOV r7, r7, ASR #8 + MLA r12,r9, r10,r12 @ r12 += ro2*T[0] + RSB r8, r8, #0 @ r8 = -ro0 + MUL r3, r9, r11 @ r3 = ro2*T[1] + LDRB r11,[r5,#1] @ r11= T[1] + MLA r3, r8, r10,r3 @ r3 -= ro0*T[0] + LDRB r10,[r5],r2 @ r10= T[0] T += step + STR r12,[r4,#16+8] + STR r3, [r4,#16] + + @ XNPROD31( ri2, ri0, T[0], T[1], 0xbX[0], &bX[2] ) + @ bX[0] = (ri2*T[0] - ri0*T[1])>>31 bX[2] = (ri0*T[0] + ri2*T[1])>>31 + MUL r12,r6, r10 @ r12 = ri0*T[0] + RSB r6, r6, #0 @ r6 = -ri0 + MLA r12,r7, r11,r12 @ r12 += ri2*T[1] + CMP r4, r1 + MUL r3, r7, r10 @ r3 = ri2*T[0] + STR r12,[r1,#8-16] + MLA r3, r6, r11,r3 @ r3 -= ri0*T[1] + STR r3, [r1,#-16] + + BGE presymmetry_loop3 + + SUB r1,r1,r0 @ r1 = in -= n>>2 (i.e. restore in) + + LDR r3,[r13] + STR r2,[r13,#-4]! + + @ mdct_butterflies + @ r0 = n = (points * 2) + @ r1 = in = x + @ r2 = i + @ r3 = shift + STMFD r13!,{r0-r1} + RSBS r4,r3,#6 @ r4 = stages = 7-shift then --stages + LDR r5,=sincos_lookup0 + BLE no_generics + MOV r14,#4 @ r14= 4 (i=0) + MOV r6, r14,LSL r3 @ r6 = (4<>i = POINTS + MOV r2, r14,LSR #2 @ r2 = (1<>1) + ADD r7,r1,r0,LSL #1 @ r7 = x1+4 = x + POINTS + ADD r12,r5,#1024 @ r12= sincos_lookup0+1024 + +mdct_bufferfly_generic_loop1: + LDMDB r7!,{r2,r3,r8,r11} @ r2 = x1[0] + @ r3 = x1[1] + @ r8 = x1[2] + @ r11= x1[3] x1 -= 4 + LDMDB r1!,{r4,r9,r10,r14} @ r4 = x2[0] + @ r9 = x2[1] + @ r10= x2[2] + @ r14= x2[3] x2 -= 4 + + SUB r2, r2, r3 @ r2 = s0 = x1[0] - x1[1] + ADD r3, r2, r3, LSL #1 @ r3 = x1[0] + x1[1] (-> x1[0]) + SUB r11,r11,r8 @ r11= s1 = x1[3] - x1[2] + ADD r8, r11,r8, LSL #1 @ r8 = x1[3] + x1[2] (-> x1[2]) + SUB r9, r9, r4 @ r9 = s2 = x2[1] - x2[0] + ADD r4, r9, r4, LSL #1 @ r4 = x2[1] + x2[0] (-> x1[1]) + SUB r14,r14,r10 @ r14= s3 = x2[3] - x2[2] + ADD r10,r14,r10,LSL #1 @ r10= x2[3] + x2[2] (-> x1[3]) + STMIA r7,{r3,r4,r8,r10} + + @ r0 = points + @ r1 = x2 + @ r2 = s0 + @ r3 free + @ r4 free + @ r5 = T + @ r6 = step + @ r7 = x1 + @ r8 free + @ r9 = s2 + @ r10 free + @ r11= s1 + @ r12= limit + @ r14= s3 + + LDRB r8, [r5,#1] @ r8 = T[1] + LDRB r10,[r5],r6 @ r10= T[0] T += step + MOV r2, r2, ASR #8 + MOV r11,r11,ASR #8 + MOV r9, r9, ASR #8 + MOV r14,r14,ASR #8 + + @ XPROD31(s1, s0, T[0], T[1], &x2[0], &x2[2]) + @ x2[0] = (s1*T[0] + s0*T[1])>>31 x2[2] = (s0*T[0] - s1*T[1])>>31 + @ stall Xscale + MUL r3, r2, r8 @ r3 = s0*T[1] + MLA r3, r11,r10,r3 @ r3 += s1*T[0] + RSB r11,r11,#0 + MUL r4, r8, r11 @ r4 = -s1*T[1] + MLA r4, r2, r10,r4 @ r4 += s0*T[0] = Value for x2[2] + MOV r2, r3 @ r2 = r3 = Value for x2[0] + + @ XPROD31(s2, s3, T[0], T[1], &x2[1], &x2[3]) + @ x2[1] = (s2*T[0] + s3*T[1])>>31 x2[3] = (s3*T[0] - s2*T[1])>>31 + MUL r3, r9, r10 @ r3 = s2*T[0] + MLA r3, r14,r8, r3 @ r3 += s3*T[1] = Value for x2[1] + RSB r9, r9, #0 + MUL r11,r14,r10 @ r11 = s3*T[0] + MLA r11,r9, r8, r11 @ r11 -= s2*T[1] = Value for x2[3] + CMP r5, r12 + + STMIA r1,{r2,r3,r4,r11} + + BLT mdct_bufferfly_generic_loop1 + + SUB r12,r12,#1024 +mdct_bufferfly_generic_loop2: + LDMDB r7!,{r2,r3,r9,r10} @ r2 = x1[0] + @ r3 = x1[1] + @ r9 = x1[2] + @ r10= x1[3] x1 -= 4 + LDMDB r1!,{r4,r8,r11,r14} @ r4 = x2[0] + @ r8 = x2[1] + @ r11= x2[2] + @ r14= x2[3] x2 -= 4 + + SUB r2, r2, r3 @ r2 = s0 = x1[0] - x1[1] + ADD r3, r2, r3, LSL #1 @ r3 = x1[0] + x1[1] (-> x1[0]) + SUB r9, r9,r10 @ r9 = s1 = x1[2] - x1[3] + ADD r10,r9,r10, LSL #1 @ r10= x1[2] + x1[3] (-> x1[2]) + SUB r4, r4, r8 @ r4 = s2 = x2[0] - x2[1] + ADD r8, r4, r8, LSL #1 @ r8 = x2[0] + x2[1] (-> x1[1]) + SUB r14,r14,r11 @ r14= s3 = x2[3] - x2[2] + ADD r11,r14,r11,LSL #1 @ r11= x2[3] + x2[2] (-> x1[3]) + STMIA r7,{r3,r8,r10,r11} + + @ r0 = points + @ r1 = x2 + @ r2 = s0 + @ r3 free + @ r4 = s2 + @ r5 = T + @ r6 = step + @ r7 = x1 + @ r8 free + @ r9 = s1 + @ r10 free + @ r11 free + @ r12= limit + @ r14= s3 + + LDRB r8, [r5,#1] @ r8 = T[1] + LDRB r10,[r5],-r6 @ r10= T[0] T -= step + MOV r2, r2, ASR #8 + MOV r9, r9, ASR #8 + MOV r4, r4, ASR #8 + MOV r14,r14,ASR #8 + + @ XNPROD31(s0, s1, T[0], T[1], &x2[0], &x2[2]) + @ x2[0] = (s0*T[0] - s1*T[1])>>31 x2[2] = (s1*T[0] + s0*T[1])>>31 + @ stall Xscale + MUL r11,r2, r8 @ r11 = s0*T[1] + MLA r11,r9, r10,r11 @ r11 += s1*T[0] + RSB r9, r9, #0 + MUL r2, r10,r2 @ r2 = s0*T[0] + MLA r2, r9, r8, r2 @ r2 += -s1*T[1] = Value for x2[0] + MOV r9, r11 @ r9 = r11 = Value for x2[2] + + @ XNPROD31(s3, s2, T[0], T[1], &x2[1], &x2[3]) + @ x2[1] = (s3*T[0] - s2*T[1])>>31 x2[3] = (s2*T[0] + s3*T[1])>>31 + MUL r11,r4, r10 @ r11 = s2*T[0] + MLA r11,r14,r8, r11 @ r11 += s3*T[1] = Value for x2[3] + RSB r4, r4, #0 + MUL r3, r14,r10 @ r3 = s3*T[0] + MLA r3, r4, r8, r3 @ r3 -= s2*T[1] = Value for x2[1] + CMP r5, r12 + + STMIA r1,{r2,r3,r9,r11} + + BGT mdct_bufferfly_generic_loop2 + + LDR r2,[r13],#4 @ unstack r2 + ADD r1, r1, r0, LSL #2 @ r1 = x+POINTS*j + @ stall Xscale + SUBS r2, r2, #1 @ r2-- (j++) + BGT mdct_butterflies_loop2 + + LDMFD r13!,{r4,r14} + + LDR r1,[r13,#4] + + SUBS r4, r4, #1 @ stages-- + MOV r14,r14,LSL #1 @ r14= 4< x[16] + SUB r9, r9, r10 @ r9 = s1 = x[18] - x[19] + ADD r10,r9, r10,LSL #1 @ r10= x[18] + x[19] -> x[18] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[17] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[19] + STMIA r4!,{r6,r7,r10,r11} + + MOV r6,#0xed @ r6 =cPI1_8 + MOV r7,#0x62 @ r7 =cPI3_8 + + MOV r5, r5, ASR #8 + MOV r9, r9, ASR #8 + MOV r8, r8, ASR #8 + MOV r12,r12,ASR #8 + + @ XNPROD31( s0, s1, cPI3_8, cPI1_8, &x[ 0], &x[ 2] ) + @ x[0] = s0*cPI3_8 - s1*cPI1_8 x[2] = s1*cPI3_8 + s0*cPI1_8 + @ stall Xscale + MUL r11,r5, r6 @ r11 = s0*cPI1_8 + MLA r11,r9, r7, r11 @ r11 += s1*cPI3_8 + RSB r9, r9, #0 + MUL r5, r7, r5 @ r5 = s0*cPI3_8 + MLA r5, r9, r6, r5 @ r5 -= s1*cPI1_8 + + @ XPROD31 ( s2, s3, cPI1_8, cPI3_8, &x[ 1], &x[ 3] ) + @ x[1] = s2*cPI1_8 + s3*cPI3_8 x[3] = s3*cPI1_8 - s2*cPI3_8 + MUL r9, r8, r6 @ r9 = s2*cPI1_8 + MLA r9, r12,r7, r9 @ r9 += s3*cPI3_8 + RSB r8,r8,#0 + MUL r12,r6, r12 @ r12 = s3*cPI1_8 + MLA r12,r8, r7, r12 @ r12 -= s2*cPI3_8 + STMIA r1!,{r5,r9,r11,r12} + + @ block2 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[20] + @ r6 = x[21] + @ r9 = x[22] + @ r10= x[23] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[4] + @ r8 = x[5] + @ r11= x[6] + @ r12= x[7] + SUB r5, r5, r6 @ r5 = s0 = x[20] - x[21] + ADD r6, r5, r6, LSL #1 @ r6 = x[20] + x[21] -> x[20] + SUB r9, r9, r10 @ r9 = s1 = x[22] - x[23] + ADD r10,r9, r10,LSL #1 @ r10= x[22] + x[23] -> x[22] + SUB r8, r8, r7 @ r8 = s2 = x[ 5] - x[ 4] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 5] + x[ 4] -> x[21] + SUB r12,r12,r11 @ r12= s3 = x[ 7] - x[ 6] + ADD r11,r12,r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[23] + MOV r14,#0xb5 @ cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + MOV r5, r5, ASR #8 + MUL r5, r14,r5 @ r5 = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + MOV r8, r8, ASR #8 + MUL r8, r14,r8 @ r8 = (s3+s2)*cPI2_8 + MOV r9, r9, ASR #8 + MUL r9, r14,r9 @ r9 = (s0+s1)*cPI2_8 + MOV r12,r12,ASR #8 + MUL r12,r14,r12 @ r12 = (s3-s2)*cPI2_8 + STMIA r1!,{r5,r8,r9,r12} + + @ block3 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[24] + @ r6 = x[25] + @ r9 = x[25] + @ r10= x[26] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[8] + @ r8 = x[9] + @ r11= x[10] + @ r12= x[11] + SUB r5, r5, r6 @ r5 = s0 = x[24] - x[25] + ADD r6, r5, r6, LSL #1 @ r6 = x[24] + x[25] -> x[25] + SUB r9, r9, r10 @ r9 = s1 = x[26] - x[27] + ADD r10,r9, r10,LSL #1 @ r10= x[26] + x[27] -> x[26] + SUB r8, r8, r7 @ r8 = s2 = x[ 9] - x[ 8] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 9] + x[ 8] -> x[25] + SUB r12,r12,r11 @ r12= s3 = x[11] - x[10] + ADD r11,r12,r11, LSL #1 @ r11= x[11] + x[10] -> x[27] + STMIA r4!,{r6,r7,r10,r11} + + MOV r6,#0x62 @ r6 = cPI3_8 + MOV r7,#0xED @ r7 = cPI1_8 + + @ XNPROD31( s0, s1, cPI1_8, cPI3_8, &x[ 8], &x[10] ) + @ x[8] = s0*cPI1_8 - s1*cPI3_8 x[10] = s1*cPI1_8 + s0*cPI3_8 + @ stall Xscale + MOV r5, r5, ASR #8 + MUL r11,r5, r6 @ r11 = s0*cPI3_8 + MOV r9, r9, ASR #8 + MLA r11,r9, r7, r11 @ r11 += s1*cPI1_8 + RSB r9, r9, #0 + MUL r5, r7, r5 @ r5 = s0*cPI1_8 + MLA r5, r9, r6, r5 @ r5 -= s1*cPI3_8 + + @ XPROD31 ( s2, s3, cPI3_8, cPI1_8, &x[ 9], &x[11] ) + @ x[9] = s2*cPI3_8 + s3*cPI1_8 x[11] = s3*cPI3_8 - s2*cPI1_8 + MOV r8, r8, ASR #8 + MUL r9, r8, r6 @ r9 = s2*cPI3_8 + MOV r12,r12,ASR #8 + MLA r9, r12,r7, r9 @ r9 += s3*cPI1_8 + RSB r8,r8,#0 + MUL r12,r6, r12 @ r12 = s3*cPI3_8 + MLA r12,r8, r7, r12 @ r12 -= s2*cPI1_8 + STMIA r1!,{r5,r9,r11,r12} + + @ block4 + LDMIA r4,{r5,r6,r10,r11} @ r5 = x[28] + @ r6 = x[29] + @ r10= x[30] + @ r11= x[31] + LDMIA r1,{r8,r9,r12,r14} @ r8 = x[12] + @ r9 = x[13] + @ r12= x[14] + @ r14= x[15] + SUB r5, r5, r6 @ r5 = s0 = x[28] - x[29] + ADD r6, r5, r6, LSL #1 @ r6 = x[28] + x[29] -> x[28] + SUB r7, r14,r12 @ r7 = s3 = x[15] - x[14] + ADD r12,r7, r12, LSL #1 @ r12= x[15] + x[14] -> x[31] + SUB r10,r10,r11 @ r10= s1 = x[30] - x[31] + ADD r11,r10,r11,LSL #1 @ r11= x[30] + x[31] -> x[30] + SUB r14, r8, r9 @ r14= s2 = x[12] - x[13] + ADD r9, r14, r9, LSL #1 @ r9 = x[12] + x[13] -> x[29] + STMIA r4!,{r6,r9,r11,r12} + STMIA r1!,{r5,r7,r10,r14} + + @ mdct_butterfly16 (1st version) + @ block 1 + SUB r1,r1,#16*4 + ADD r4,r1,#8*4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[ 8] + @ r6 = x[ 9] + @ r9 = x[10] + @ r10= x[11] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[0] + @ r8 = x[1] + @ r11= x[2] + @ r12= x[3] + SUB r5, r5, r6 @ r5 = s0 = x[ 8] - x[ 9] + ADD r6, r5, r6, LSL #1 @ r6 = x[ 8] + x[ 9] -> x[ 8] + SUB r9, r9, r10 @ r9 = s1 = x[10] - x[11] + ADD r10,r9, r10,LSL #1 @ r10= x[10] + x[11] -> x[10] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[ 9] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[11] + MOV r14,#0xB5 @ r14= cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + MOV r5, r5, ASR #8 + MUL r5, r14,r5 @ r5 = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + MOV r8, r8, ASR #8 + MUL r8, r14,r8 @ r8 = (s3+s2)*cPI2_8 + MOV r9, r9, ASR #8 + MUL r9, r14,r9 @ r9 = (s0+s1)*cPI2_8 + MOV r12,r12,ASR #8 + MUL r12,r14,r12 @ r12 = (s3-s2)*cPI2_8 + STMIA r1!,{r5,r8,r9,r12} + + @ block2 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[12] + @ r6 = x[13] + @ r9 = x[14] + @ r10= x[15] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[ 4] + @ r8 = x[ 5] + @ r11= x[ 6] + @ r12= x[ 7] + SUB r14,r7, r8 @ r14= s0 = x[ 4] - x[ 5] + ADD r8, r14,r8, LSL #1 @ r8 = x[ 4] + x[ 5] -> x[13] + SUB r7, r12,r11 @ r7 = s1 = x[ 7] - x[ 6] + ADD r11,r7, r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[15] + SUB r5, r5, r6 @ r5 = s2 = x[12] - x[13] + ADD r6, r5, r6, LSL #1 @ r6 = x[12] + x[13] -> x[12] + SUB r12,r9, r10 @ r12= s3 = x[14] - x[15] + ADD r10,r12,r10,LSL #1 @ r10= x[14] + x[15] -> x[14] + STMIA r4!,{r6,r8,r10,r11} + STMIA r1!,{r5,r7,r12,r14} + + @ mdct_butterfly_8 + LDMDB r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMDB r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ mdct_butterfly_8 + LDMIA r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMIA r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ mdct_butterfly16 (2nd version) + @ block 1 + ADD r1,r1,#16*4-8*4 + ADD r4,r1,#8*4 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[ 8] + @ r6 = x[ 9] + @ r9 = x[10] + @ r10= x[11] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[0] + @ r8 = x[1] + @ r11= x[2] + @ r12= x[3] + SUB r5, r5, r6 @ r5 = s0 = x[ 8] - x[ 9] + ADD r6, r5, r6, LSL #1 @ r6 = x[ 8] + x[ 9] -> x[ 8] + SUB r9, r9, r10 @ r9 = s1 = x[10] - x[11] + ADD r10,r9, r10,LSL #1 @ r10= x[10] + x[11] -> x[10] + SUB r8, r8, r7 @ r8 = s2 = x[ 1] - x[ 0] + ADD r7, r8, r7, LSL #1 @ r7 = x[ 1] + x[ 0] -> x[ 9] + SUB r12,r12,r11 @ r12= s3 = x[ 3] - x[ 2] + ADD r11,r12,r11, LSL #1 @ r11= x[ 3] + x[ 2] -> x[11] + MOV r14,#0xb5 @ r14= cPI2_8 + STMIA r4!,{r6,r7,r10,r11} + + SUB r5, r5, r9 @ r5 = s0 - s1 + ADD r9, r5, r9, LSL #1 @ r9 = s0 + s1 + MOV r5, r5, ASR #8 + MUL r5, r14,r5 @ r5 = (s0-s1)*cPI2_8 + SUB r12,r12,r8 @ r12= s3 - s2 + ADD r8, r12,r8, LSL #1 @ r8 = s3 + s2 + + MOV r8, r8, ASR #8 + MUL r8, r14,r8 @ r8 = (s3+s2)*cPI2_8 + MOV r9, r9, ASR #8 + MUL r9, r14,r9 @ r9 = (s0+s1)*cPI2_8 + MOV r12,r12,ASR #8 + MUL r12,r14,r12 @ r12 = (s3-s2)*cPI2_8 + STMIA r1!,{r5,r8,r9,r12} + + @ block2 + LDMIA r4,{r5,r6,r9,r10} @ r5 = x[12] + @ r6 = x[13] + @ r9 = x[14] + @ r10= x[15] + LDMIA r1,{r7,r8,r11,r12} @ r7 = x[ 4] + @ r8 = x[ 5] + @ r11= x[ 6] + @ r12= x[ 7] + SUB r5, r5, r6 @ r5 = s2 = x[12] - x[13] + ADD r6, r5, r6, LSL #1 @ r6 = x[12] + x[13] -> x[12] + SUB r9, r9, r10 @ r9 = s3 = x[14] - x[15] + ADD r10,r9, r10,LSL #1 @ r10= x[14] + x[15] -> x[14] + SUB r14,r7, r8 @ r14= s0 = x[ 4] - x[ 5] + ADD r8, r14,r8, LSL #1 @ r8 = x[ 4] + x[ 5] -> x[13] + SUB r7, r12,r11 @ r7 = s1 = x[ 7] - x[ 6] + ADD r11,r7, r11, LSL #1 @ r11= x[ 7] + x[ 6] -> x[15] + STMIA r4!,{r6,r8,r10,r11} + STMIA r1!,{r5,r7,r9,r14} + + @ mdct_butterfly_8 + LDMDB r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMDB r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + @ mdct_butterfly_8 + LDMIA r1,{r6,r7,r8,r9,r10,r11,r12,r14} + @ r6 = x[0] + @ r7 = x[1] + @ r8 = x[2] + @ r9 = x[3] + @ r10= x[4] + @ r11= x[5] + @ r12= x[6] + @ r14= x[7] + ADD r6, r6, r7 @ r6 = s0 = x[0] + x[1] + SUB r7, r6, r7, LSL #1 @ r7 = s1 = x[0] - x[1] + ADD r8, r8, r9 @ r8 = s2 = x[2] + x[3] + SUB r9, r8, r9, LSL #1 @ r9 = s3 = x[2] - x[3] + ADD r10,r10,r11 @ r10= s4 = x[4] + x[5] + SUB r11,r10,r11,LSL #1 @ r11= s5 = x[4] - x[5] + ADD r12,r12,r14 @ r12= s6 = x[6] + x[7] + SUB r14,r12,r14,LSL #1 @ r14= s7 = x[6] - x[7] + + ADD r2, r11,r9 @ r2 = x[0] = s5 + s3 + SUB r4, r2, r9, LSL #1 @ r4 = x[2] = s5 - s3 + SUB r3, r14,r7 @ r3 = x[1] = s7 - s1 + ADD r5, r3, r7, LSL #1 @ r5 = x[3] = s7 + s1 + SUB r10,r10,r6 @ r10= x[4] = s4 - s0 + SUB r11,r12,r8 @ r11= x[5] = s6 - s2 + ADD r12,r10,r6, LSL #1 @ r12= x[6] = s4 + s0 + ADD r14,r11,r8, LSL #1 @ r14= x[7] = s6 + s2 + STMIA r1,{r2,r3,r4,r5,r10,r11,r12,r14} + + ADD r1,r1,#8*4 + SUBS r0,r0,#64 + BGT mdct_bufferflies_loop3 + + LDMFD r13,{r0-r3} + +mdct_bitreverseARM: + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift + + MOV r4, #0 @ r4 = bit = 0 + ADD r5, r1, r0, LSL #1 @ r5 = w = x + (n>>1) + ADR r6, bitrev + SUB r3, r3, #2 @ r3 = shift -= 2 + SUB r5, r5, #8 +brev_lp: + LDRB r7, [r6, r4, LSR #6] + AND r8, r4, #0x3f + LDRB r8, [r6, r8] + ADD r4, r4, #1 @ bit++ + @ stall XScale + ORR r7, r7, r8, LSL #6 @ r7 = bitrev[bit] + ADD r9, r1, r7, LSR r3 @ r9 = xx = x + (b>>shift) + CMP r5, r9 @ if (w > xx) + LDR r10,[r5],#-8 @ r10 = w[0] w -= 2 + LDRGT r11,[r5,#12] @ r11 = w[1] + LDRGT r12,[r9] @ r12 = xx[0] + LDRGT r14,[r9,#4] @ r14 = xx[1] + STRGT r10,[r9] @ xx[0]= w[0] + STRGT r11,[r9,#4] @ xx[1]= w[1] + STRGT r12,[r5,#8] @ w[0] = xx[0] + STRGT r14,[r5,#12] @ w[1] = xx[1] + CMP r5,r1 + BGT brev_lp + + @ mdct_step7 + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift-2 + + CMP r2, #4 @ r5 = T = (step>=4) ? + LDRGE r5, =sincos_lookup0 @ sincos_lookup0 + + LDRLT r5, =sincos_lookup1 @ sincos_lookup0 + + ADD r7, r1, r0, LSL #1 @ r7 = w1 = x + (n>>1) + ADDGE r5, r5, r2, LSR #1 @ (step>>1) + ADD r8, r5, #1024 @ r8 = Ttop +step7_loop1: + LDR r6, [r1] @ r6 = w0[0] + LDR r9, [r1,#4] @ r9 = w0[1] + LDR r10,[r7,#-8]! @ r10= w1[0] w1 -= 2 + LDR r11,[r7,#4] @ r11= w1[1] + LDRB r14,[r5,#1] @ r14= T[1] + LDRB r12,[r5],r2 @ r12= T[0] T += step + + ADD r6, r6, r10 @ r6 = s0 = w0[0] + w1[0] + SUB r10,r6, r10,LSL #1 @ r10= s1b= w0[0] - w1[0] + SUB r11,r11,r9 @ r11= s1 = w1[1] - w0[1] + ADD r9, r11,r9, LSL #1 @ r9 = s0b= w1[1] + w0[1] + + MOV r6, r6, ASR #9 + MUL r3, r6, r14 @ r3 = s0*T[1] + MOV r11,r11,ASR #9 + MUL r4, r11,r12 @ r4 += s1*T[0] = s2 + ADD r3, r3, r4 + MUL r14,r11,r14 @ r14 = s1*T[1] + MUL r12,r6, r12 @ r12 += s0*T[0] = s3 + SUB r14,r14,r12 + + @ r9 = s0b<<1 + @ r10= s1b<<1 + ADD r9, r3, r9, ASR #1 @ r9 = s0b + s2 + SUB r3, r9, r3, LSL #1 @ r3 = s0b - s2 + + SUB r12,r14,r10,ASR #1 @ r12= s3 - s1b + ADD r10,r14,r10,ASR #1 @ r10= s3 + s1b + STR r9, [r1],#4 + STR r10,[r1],#4 @ w0 += 2 + STR r3, [r7] + STR r12,[r7,#4] + + CMP r5,r8 + BLT step7_loop1 + +step7_loop2: + LDR r6, [r1] @ r6 = w0[0] + LDR r9, [r1,#4] @ r9 = w0[1] + LDR r10,[r7,#-8]! @ r10= w1[0] w1 -= 2 + LDR r11,[r7,#4] @ r11= w1[1] + LDRB r14,[r5,-r2]! @ r12= T[1] T -= step + LDRB r12,[r5,#1] @ r14= T[0] + + ADD r6, r6, r10 @ r6 = s0 = w0[0] + w1[0] + SUB r10,r6, r10,LSL #1 @ r10= s1b= w0[0] - w1[0] + SUB r11,r11,r9 @ r11= s1 = w1[1] - w0[1] + ADD r9, r11,r9, LSL #1 @ r9 = s0b= w1[1] + w0[1] + + MOV r6, r6, ASR #9 + MUL r3, r6, r14 @ r3 = s0*T[0] + MOV r11,r11,ASR #9 + MUL r4, r11,r12 @ r4 += s1*T[1] = s2 + ADD r3, r3, r4 + MUL r14,r11,r14 @ r14 = s1*T[0] + MUL r12,r6, r12 @ r12 += s0*T[1] = s3 + SUB r14,r14,r12 + + @ r9 = s0b<<1 + @ r10= s1b<<1 + ADD r9, r3, r9, ASR #1 @ r9 = s0b + s2 + SUB r3, r9, r3, LSL #1 @ r3 = s0b - s2 + + SUB r12,r14,r10,ASR #1 @ r12= s3 - s1b + ADD r10,r14,r10,ASR #1 @ r10= s3 + s1b + STR r9, [r1],#4 + STR r10,[r1],#4 @ w0 += 2 + STR r3, [r7] + STR r12,[r7,#4] + + CMP r1,r7 + BLT step7_loop2 + + LDMFD r13!,{r0-r3} + + @ r0 = points + @ r1 = in + @ r2 = step + @ r3 = shift + MOV r2, r2, ASR #2 @ r2 = step >>= 2 + CMP r2, #0 + CMPNE r2, #1 + BEQ mdct_end + + @ step > 1 (default case) + CMP r2, #4 @ r5 = T = (step>=4) ? + LDRGE r5, =sincos_lookup0 @ sincos_lookup0 + + LDRLT r5, =sincos_lookup1 @ sincos_lookup1 + ADD r7, r1, r0, LSL #1 @ r7 = iX = x + (n>>1) + ADDGE r5, r5, r2, LSR #1 @ (step>>1) +mdct_step8_default: + LDR r6, [r1],#4 @ r6 = s0 = x[0] + LDR r8, [r1],#4 @ r8 = -s1 = x[1] + LDRB r12,[r5,#1] @ r12= T[1] + LDRB r14,[r5],r2 @ r14= T[0] T += step + RSB r8, r8, #0 @ r8 = s1 + + @ XPROD31(s0, s1, T[0], T[1], x, x+1) + @ x[0] = s0 * T[0] + s1 * T[1] x[1] = s1 * T[0] - s0 * T[1] + MOV r6, r6, ASR #8 + MOV r8, r8, ASR #8 + MUL r10,r8, r12 @ r10 = s1 * T[1] + CMP r1, r7 + MLA r10,r6, r14,r10 @ r10 += s0 * T[0] + RSB r6, r6, #0 @ r6 = -s0 + MUL r11,r8, r14 @ r11 = s1 * T[0] + MLA r11,r6, r12,r11 @ r11 -= s0 * T[1] + STR r10,[r1,#-8] + STR r11,[r1,#-4] + BLT mdct_step8_default + +mdct_end: + MOV r0, r2 + LDMFD r13!,{r4-r11,PC} + +bitrev: + .byte 0 + .byte 32 + .byte 16 + .byte 48 + .byte 8 + .byte 40 + .byte 24 + .byte 56 + .byte 4 + .byte 36 + .byte 20 + .byte 52 + .byte 12 + .byte 44 + .byte 28 + .byte 60 + .byte 2 + .byte 34 + .byte 18 + .byte 50 + .byte 10 + .byte 42 + .byte 26 + .byte 58 + .byte 6 + .byte 38 + .byte 22 + .byte 54 + .byte 14 + .byte 46 + .byte 30 + .byte 62 + .byte 1 + .byte 33 + .byte 17 + .byte 49 + .byte 9 + .byte 41 + .byte 25 + .byte 57 + .byte 5 + .byte 37 + .byte 21 + .byte 53 + .byte 13 + .byte 45 + .byte 29 + .byte 61 + .byte 3 + .byte 35 + .byte 19 + .byte 51 + .byte 11 + .byte 43 + .byte 27 + .byte 59 + .byte 7 + .byte 39 + .byte 23 + .byte 55 + .byte 15 + .byte 47 + .byte 31 + .byte 63 + + @ END diff --git a/Tremolo/mdct_lookup.h b/Tremolo/mdct_lookup.h new file mode 100644 index 0000000..b0a0677 --- /dev/null +++ b/Tremolo/mdct_lookup.h @@ -0,0 +1,539 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: sin,cos lookup tables + + ********************************************************************/ + +#include "os_types.h" + +/* {sin(2*i*PI/4096), cos(2*i*PI/4096)}, with i = 0 to 512 */ +LOOKUP_T sincos_lookup0[1026] = { + X(0x00000000), X(0x7fffffff), X(0x003243f5), X(0x7ffff621), + X(0x006487e3), X(0x7fffd886), X(0x0096cbc1), X(0x7fffa72c), + X(0x00c90f88), X(0x7fff6216), X(0x00fb5330), X(0x7fff0943), + X(0x012d96b1), X(0x7ffe9cb2), X(0x015fda03), X(0x7ffe1c65), + X(0x01921d20), X(0x7ffd885a), X(0x01c45ffe), X(0x7ffce093), + X(0x01f6a297), X(0x7ffc250f), X(0x0228e4e2), X(0x7ffb55ce), + X(0x025b26d7), X(0x7ffa72d1), X(0x028d6870), X(0x7ff97c18), + X(0x02bfa9a4), X(0x7ff871a2), X(0x02f1ea6c), X(0x7ff75370), + X(0x03242abf), X(0x7ff62182), X(0x03566a96), X(0x7ff4dbd9), + X(0x0388a9ea), X(0x7ff38274), X(0x03bae8b2), X(0x7ff21553), + X(0x03ed26e6), X(0x7ff09478), X(0x041f6480), X(0x7feeffe1), + X(0x0451a177), X(0x7fed5791), X(0x0483ddc3), X(0x7feb9b85), + X(0x04b6195d), X(0x7fe9cbc0), X(0x04e8543e), X(0x7fe7e841), + X(0x051a8e5c), X(0x7fe5f108), X(0x054cc7b1), X(0x7fe3e616), + X(0x057f0035), X(0x7fe1c76b), X(0x05b137df), X(0x7fdf9508), + X(0x05e36ea9), X(0x7fdd4eec), X(0x0615a48b), X(0x7fdaf519), + X(0x0647d97c), X(0x7fd8878e), X(0x067a0d76), X(0x7fd6064c), + X(0x06ac406f), X(0x7fd37153), X(0x06de7262), X(0x7fd0c8a3), + X(0x0710a345), X(0x7fce0c3e), X(0x0742d311), X(0x7fcb3c23), + X(0x077501be), X(0x7fc85854), X(0x07a72f45), X(0x7fc560cf), + X(0x07d95b9e), X(0x7fc25596), X(0x080b86c2), X(0x7fbf36aa), + X(0x083db0a7), X(0x7fbc040a), X(0x086fd947), X(0x7fb8bdb8), + X(0x08a2009a), X(0x7fb563b3), X(0x08d42699), X(0x7fb1f5fc), + X(0x09064b3a), X(0x7fae7495), X(0x09386e78), X(0x7faadf7c), + X(0x096a9049), X(0x7fa736b4), X(0x099cb0a7), X(0x7fa37a3c), + X(0x09cecf89), X(0x7f9faa15), X(0x0a00ece8), X(0x7f9bc640), + X(0x0a3308bd), X(0x7f97cebd), X(0x0a6522fe), X(0x7f93c38c), + X(0x0a973ba5), X(0x7f8fa4b0), X(0x0ac952aa), X(0x7f8b7227), + X(0x0afb6805), X(0x7f872bf3), X(0x0b2d7baf), X(0x7f82d214), + X(0x0b5f8d9f), X(0x7f7e648c), X(0x0b919dcf), X(0x7f79e35a), + X(0x0bc3ac35), X(0x7f754e80), X(0x0bf5b8cb), X(0x7f70a5fe), + X(0x0c27c389), X(0x7f6be9d4), X(0x0c59cc68), X(0x7f671a05), + X(0x0c8bd35e), X(0x7f62368f), X(0x0cbdd865), X(0x7f5d3f75), + X(0x0cefdb76), X(0x7f5834b7), X(0x0d21dc87), X(0x7f531655), + X(0x0d53db92), X(0x7f4de451), X(0x0d85d88f), X(0x7f489eaa), + X(0x0db7d376), X(0x7f434563), X(0x0de9cc40), X(0x7f3dd87c), + X(0x0e1bc2e4), X(0x7f3857f6), X(0x0e4db75b), X(0x7f32c3d1), + X(0x0e7fa99e), X(0x7f2d1c0e), X(0x0eb199a4), X(0x7f2760af), + X(0x0ee38766), X(0x7f2191b4), X(0x0f1572dc), X(0x7f1baf1e), + X(0x0f475bff), X(0x7f15b8ee), X(0x0f7942c7), X(0x7f0faf25), + X(0x0fab272b), 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X(0x60ec3830), X(0x53c13439), X(0x60cb5bb7), + X(0x53e73097), X(0x60aa7050), X(0x540d2005), X(0x60897601), + X(0x5433027d), X(0x60686ccf), X(0x5458d7f9), X(0x604754bf), + X(0x547ea073), X(0x60262dd6), X(0x54a45be6), X(0x6004f819), + X(0x54ca0a4b), X(0x5fe3b38d), X(0x54efab9c), X(0x5fc26038), + X(0x55153fd4), X(0x5fa0fe1f), X(0x553ac6ee), X(0x5f7f8d46), + X(0x556040e2), X(0x5f5e0db3), X(0x5585adad), X(0x5f3c7f6b), + X(0x55ab0d46), X(0x5f1ae274), X(0x55d05faa), X(0x5ef936d1), + X(0x55f5a4d2), X(0x5ed77c8a), X(0x561adcb9), X(0x5eb5b3a2), + X(0x56400758), X(0x5e93dc1f), X(0x566524aa), X(0x5e71f606), + X(0x568a34a9), X(0x5e50015d), X(0x56af3750), X(0x5e2dfe29), + X(0x56d42c99), X(0x5e0bec6e), X(0x56f9147e), X(0x5de9cc33), + X(0x571deefa), X(0x5dc79d7c), X(0x5742bc06), X(0x5da5604f), + X(0x57677b9d), X(0x5d8314b1), X(0x578c2dba), X(0x5d60baa7), + X(0x57b0d256), X(0x5d3e5237), X(0x57d5696d), X(0x5d1bdb65), + X(0x57f9f2f8), X(0x5cf95638), X(0x581e6ef1), X(0x5cd6c2b5), + X(0x5842dd54), X(0x5cb420e0), X(0x58673e1b), X(0x5c9170bf), + X(0x588b9140), X(0x5c6eb258), X(0x58afd6bd), X(0x5c4be5b0), + X(0x58d40e8c), X(0x5c290acc), X(0x58f838a9), X(0x5c0621b2), + X(0x591c550e), X(0x5be32a67), X(0x594063b5), X(0x5bc024f0), + X(0x59646498), X(0x5b9d1154), X(0x598857b2), X(0x5b79ef96), + X(0x59ac3cfd), X(0x5b56bfbd), X(0x59d01475), X(0x5b3381ce), + X(0x59f3de12), X(0x5b1035cf), X(0x5a1799d1), X(0x5aecdbc5), + X(0x5a3b47ab), X(0x5ac973b5), X(0x5a5ee79a), X(0x5aa5fda5), + X(0x5a82799a), X(0x5a82799a) + }; + + /* {sin((2*i+1)*PI/4096), cos((2*i+1)*PI/4096)}, with i = 0 to 511 */ +LOOKUP_T sincos_lookup1[1024] = { + X(0x001921fb), X(0x7ffffd88), X(0x004b65ee), X(0x7fffe9cb), + X(0x007da9d4), X(0x7fffc251), X(0x00afeda8), X(0x7fff8719), + X(0x00e23160), X(0x7fff3824), X(0x011474f6), X(0x7ffed572), + X(0x0146b860), X(0x7ffe5f03), X(0x0178fb99), X(0x7ffdd4d7), + X(0x01ab3e97), X(0x7ffd36ee), X(0x01dd8154), X(0x7ffc8549), + X(0x020fc3c6), X(0x7ffbbfe6), X(0x024205e8), X(0x7ffae6c7), + X(0x027447b0), X(0x7ff9f9ec), X(0x02a68917), X(0x7ff8f954), + X(0x02d8ca16), X(0x7ff7e500), X(0x030b0aa4), X(0x7ff6bcf0), + X(0x033d4abb), X(0x7ff58125), X(0x036f8a51), X(0x7ff4319d), + X(0x03a1c960), X(0x7ff2ce5b), X(0x03d407df), X(0x7ff1575d), + X(0x040645c7), X(0x7fefcca4), X(0x04388310), X(0x7fee2e30), + X(0x046abfb3), X(0x7fec7c02), X(0x049cfba7), X(0x7feab61a), + X(0x04cf36e5), X(0x7fe8dc78), X(0x05017165), X(0x7fe6ef1c), + X(0x0533ab20), X(0x7fe4ee06), X(0x0565e40d), X(0x7fe2d938), + X(0x05981c26), X(0x7fe0b0b1), X(0x05ca5361), X(0x7fde7471), + X(0x05fc89b8), X(0x7fdc247a), X(0x062ebf22), X(0x7fd9c0ca), + X(0x0660f398), X(0x7fd74964), X(0x06932713), X(0x7fd4be46), + X(0x06c5598a), X(0x7fd21f72), X(0x06f78af6), X(0x7fcf6ce8), + X(0x0729bb4e), X(0x7fcca6a7), X(0x075bea8c), X(0x7fc9ccb2), + X(0x078e18a7), X(0x7fc6df08), X(0x07c04598), X(0x7fc3dda9), + X(0x07f27157), X(0x7fc0c896), X(0x08249bdd), X(0x7fbd9fd0), + X(0x0856c520), X(0x7fba6357), X(0x0888ed1b), X(0x7fb7132b), + X(0x08bb13c5), X(0x7fb3af4e), X(0x08ed3916), X(0x7fb037bf), + X(0x091f5d06), X(0x7facac7f), X(0x09517f8f), X(0x7fa90d8e), + X(0x0983a0a7), X(0x7fa55aee), X(0x09b5c048), X(0x7fa1949e), + X(0x09e7de6a), X(0x7f9dbaa0), X(0x0a19fb04), X(0x7f99ccf4), + X(0x0a4c1610), X(0x7f95cb9a), X(0x0a7e2f85), X(0x7f91b694), + X(0x0ab0475c), X(0x7f8d8de1), X(0x0ae25d8d), X(0x7f895182), + X(0x0b147211), X(0x7f850179), X(0x0b4684df), X(0x7f809dc5), + X(0x0b7895f0), X(0x7f7c2668), X(0x0baaa53b), X(0x7f779b62), + X(0x0bdcb2bb), X(0x7f72fcb4), X(0x0c0ebe66), X(0x7f6e4a5e), + X(0x0c40c835), X(0x7f698461), X(0x0c72d020), X(0x7f64aabf), + X(0x0ca4d620), X(0x7f5fbd77), X(0x0cd6da2d), X(0x7f5abc8a), + X(0x0d08dc3f), X(0x7f55a7fa), X(0x0d3adc4e), X(0x7f507fc7), + X(0x0d6cda53), X(0x7f4b43f2), X(0x0d9ed646), X(0x7f45f47b), + X(0x0dd0d01f), X(0x7f409164), X(0x0e02c7d7), X(0x7f3b1aad), + X(0x0e34bd66), X(0x7f359057), X(0x0e66b0c3), X(0x7f2ff263), + X(0x0e98a1e9), X(0x7f2a40d2), X(0x0eca90ce), X(0x7f247ba5), + X(0x0efc7d6b), X(0x7f1ea2dc), X(0x0f2e67b8), X(0x7f18b679), + X(0x0f604faf), X(0x7f12b67c), X(0x0f923546), X(0x7f0ca2e7), + X(0x0fc41876), X(0x7f067bba), X(0x0ff5f938), X(0x7f0040f6), + X(0x1027d784), X(0x7ef9f29d), X(0x1059b352), X(0x7ef390ae), + X(0x108b8c9b), X(0x7eed1b2c), X(0x10bd6356), X(0x7ee69217), + X(0x10ef377d), X(0x7edff570), X(0x11210907), X(0x7ed94538), + X(0x1152d7ed), X(0x7ed28171), X(0x1184a427), X(0x7ecbaa1a), + X(0x11b66dad), X(0x7ec4bf36), X(0x11e83478), X(0x7ebdc0c6), + X(0x1219f880), X(0x7eb6aeca), X(0x124bb9be), X(0x7eaf8943), + X(0x127d7829), X(0x7ea85033), X(0x12af33ba), X(0x7ea1039b), + X(0x12e0ec6a), X(0x7e99a37c), X(0x1312a230), X(0x7e922fd6), + X(0x13445505), X(0x7e8aa8ac), X(0x137604e2), X(0x7e830dff), + X(0x13a7b1bf), X(0x7e7b5fce), X(0x13d95b93), X(0x7e739e1d), + X(0x140b0258), X(0x7e6bc8eb), X(0x143ca605), X(0x7e63e03b), + X(0x146e4694), X(0x7e5be40c), X(0x149fe3fc), X(0x7e53d462), + X(0x14d17e36), X(0x7e4bb13c), X(0x1503153a), X(0x7e437a9c), + X(0x1534a901), X(0x7e3b3083), X(0x15663982), X(0x7e32d2f4), + X(0x1597c6b7), X(0x7e2a61ed), X(0x15c95097), X(0x7e21dd73), + X(0x15fad71b), X(0x7e194584), X(0x162c5a3b), X(0x7e109a24), + X(0x165dd9f0), X(0x7e07db52), X(0x168f5632), X(0x7dff0911), + X(0x16c0cef9), X(0x7df62362), X(0x16f2443e), X(0x7ded2a47), + X(0x1723b5f9), X(0x7de41dc0), X(0x17552422), X(0x7ddafdce), + X(0x17868eb3), X(0x7dd1ca75), X(0x17b7f5a3), X(0x7dc883b4), + X(0x17e958ea), X(0x7dbf298d), X(0x181ab881), X(0x7db5bc02), + X(0x184c1461), X(0x7dac3b15), X(0x187d6c82), X(0x7da2a6c6), + X(0x18aec0db), X(0x7d98ff17), X(0x18e01167), X(0x7d8f4409), + X(0x19115e1c), X(0x7d85759f), X(0x1942a6f3), X(0x7d7b93da), + X(0x1973ebe6), X(0x7d719eba), X(0x19a52ceb), X(0x7d679642), + X(0x19d669fc), X(0x7d5d7a74), X(0x1a07a311), X(0x7d534b50), + X(0x1a38d823), X(0x7d4908d9), X(0x1a6a0929), X(0x7d3eb30f), + X(0x1a9b361d), X(0x7d3449f5), X(0x1acc5ef6), X(0x7d29cd8c), + X(0x1afd83ad), X(0x7d1f3dd6), X(0x1b2ea43a), X(0x7d149ad5), + X(0x1b5fc097), X(0x7d09e489), X(0x1b90d8bb), X(0x7cff1af5), + X(0x1bc1ec9e), X(0x7cf43e1a), X(0x1bf2fc3a), X(0x7ce94dfb), + X(0x1c240786), X(0x7cde4a98), X(0x1c550e7c), X(0x7cd333f3), + X(0x1c861113), X(0x7cc80a0f), X(0x1cb70f43), X(0x7cbcccec), + X(0x1ce80906), X(0x7cb17c8d), X(0x1d18fe54), X(0x7ca618f3), + X(0x1d49ef26), X(0x7c9aa221), X(0x1d7adb73), X(0x7c8f1817), + X(0x1dabc334), X(0x7c837ad8), X(0x1ddca662), X(0x7c77ca65), + X(0x1e0d84f5), X(0x7c6c06c0), X(0x1e3e5ee5), X(0x7c602fec), + X(0x1e6f342c), X(0x7c5445e9), X(0x1ea004c1), X(0x7c4848ba), + X(0x1ed0d09d), X(0x7c3c3860), X(0x1f0197b8), X(0x7c3014de), + X(0x1f325a0b), X(0x7c23de35), X(0x1f63178f), X(0x7c179467), + X(0x1f93d03c), X(0x7c0b3777), X(0x1fc4840a), X(0x7bfec765), + X(0x1ff532f2), X(0x7bf24434), X(0x2025dcec), X(0x7be5ade6), + X(0x205681f1), X(0x7bd9047c), X(0x208721f9), X(0x7bcc47fa), + X(0x20b7bcfe), X(0x7bbf7860), X(0x20e852f6), X(0x7bb295b0), + X(0x2118e3dc), X(0x7ba59fee), X(0x21496fa7), X(0x7b989719), + X(0x2179f64f), X(0x7b8b7b36), X(0x21aa77cf), X(0x7b7e4c45), + X(0x21daf41d), X(0x7b710a49), X(0x220b6b32), X(0x7b63b543), + X(0x223bdd08), X(0x7b564d36), X(0x226c4996), X(0x7b48d225), + X(0x229cb0d5), X(0x7b3b4410), X(0x22cd12bd), X(0x7b2da2fa), + X(0x22fd6f48), X(0x7b1feee5), X(0x232dc66d), X(0x7b1227d3), + X(0x235e1826), X(0x7b044dc7), X(0x238e646a), X(0x7af660c2), + X(0x23beab33), X(0x7ae860c7), X(0x23eeec78), X(0x7ada4dd8), + X(0x241f2833), X(0x7acc27f7), X(0x244f5e5c), X(0x7abdef25), + X(0x247f8eec), X(0x7aafa367), X(0x24afb9da), X(0x7aa144bc), + X(0x24dfdf20), X(0x7a92d329), X(0x250ffeb7), X(0x7a844eae), + X(0x25401896), X(0x7a75b74f), X(0x25702cb7), X(0x7a670d0d), + X(0x25a03b11), X(0x7a584feb), X(0x25d0439f), X(0x7a497feb), + X(0x26004657), X(0x7a3a9d0f), X(0x26304333), X(0x7a2ba75a), + X(0x26603a2c), X(0x7a1c9ece), X(0x26902b39), X(0x7a0d836d), + X(0x26c01655), X(0x79fe5539), X(0x26effb76), X(0x79ef1436), + X(0x271fda96), X(0x79dfc064), X(0x274fb3ae), X(0x79d059c8), + X(0x277f86b5), X(0x79c0e062), X(0x27af53a6), X(0x79b15435), + X(0x27df1a77), X(0x79a1b545), X(0x280edb23), X(0x79920392), + X(0x283e95a1), X(0x79823f20), X(0x286e49ea), X(0x797267f2), + X(0x289df7f8), X(0x79627e08), X(0x28cd9fc1), X(0x79528167), + X(0x28fd4140), X(0x79427210), X(0x292cdc6d), X(0x79325006), + X(0x295c7140), X(0x79221b4b), X(0x298bffb2), X(0x7911d3e2), + X(0x29bb87bc), X(0x790179cd), X(0x29eb0957), X(0x78f10d0f), + X(0x2a1a847b), X(0x78e08dab), X(0x2a49f920), X(0x78cffba3), + X(0x2a796740), X(0x78bf56f9), X(0x2aa8ced3), X(0x78ae9fb0), + X(0x2ad82fd2), X(0x789dd5cb), X(0x2b078a36), X(0x788cf94c), + X(0x2b36ddf7), X(0x787c0a36), X(0x2b662b0e), X(0x786b088c), + X(0x2b957173), X(0x7859f44f), X(0x2bc4b120), X(0x7848cd83), + X(0x2bf3ea0d), X(0x7837942b), X(0x2c231c33), X(0x78264849), + X(0x2c52478a), X(0x7814e9df), X(0x2c816c0c), X(0x780378f1), + X(0x2cb089b1), X(0x77f1f581), X(0x2cdfa071), X(0x77e05f91), + X(0x2d0eb046), X(0x77ceb725), X(0x2d3db928), X(0x77bcfc3f), + 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BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * by the XIPHOPHORUS Company http://www.xiph.org/ * + * * + ********************************************************************/ + +#define HEAD_ALIGN 64 +#include +#include +#include +#define MISC_C +#include "misc.h" +//#include + +static void **pointers=NULL; +static long *insertlist=NULL; /* We can't embed this in the pointer list; + a pointer can have any value... */ + +static char **files=NULL; +static long *file_bytes=NULL; +static int filecount=0; + +static int ptop=0; +static int palloced=0; +static int pinsert=0; + +typedef struct { + char *file; + long line; + long ptr; + long bytes; +} head; + +long global_bytes=0; +long start_time=-1; + +static void *_insert(void *ptr,long bytes,char *file,long line){ + ((head *)ptr)->file=file; + ((head *)ptr)->line=line; + ((head *)ptr)->ptr=pinsert; + ((head *)ptr)->bytes=bytes-HEAD_ALIGN; + + if(pinsert>=palloced){ + palloced+=64; + if(pointers){ + pointers=(void **)realloc(pointers,sizeof(void **)*palloced); + insertlist=(long *)realloc(insertlist,sizeof(long *)*palloced); + }else{ + pointers=(void **)malloc(sizeof(void **)*palloced); + insertlist=(long *)malloc(sizeof(long *)*palloced); + } + } + + pointers[pinsert]=ptr; + + if(pinsert==ptop) + pinsert=++ptop; + else + pinsert=insertlist[pinsert]; + +#ifdef _VDBG_GRAPHFILE + { + FILE *out; + struct timeval tv; + static struct timezone tz; + int i; + char buffer[80]; + gettimeofday(&tv,&tz); + + for(i=0;ifile; + long bytes =((head *)ptr)->bytes; + int i; + + gettimeofday(&tv,&tz); + fprintf(out,"%ld, %ld\n",-start_time+(tv.tv_sec*1000)+(tv.tv_usec/1000), + global_bytes); + fprintf(out,"%ld, %ld\n",-start_time+(tv.tv_sec*1000)+(tv.tv_usec/1000), + global_bytes-((head *)ptr)->bytes); + fclose(out); + + for(i=0;ibytes; + + insert=((head *)ptr)->ptr; + insertlist[insert]=pinsert; + pinsert=insert; + + if(pointers[insert]==NULL){ + fprintf(stderr,"DEBUGGING MALLOC ERROR: freeing previously freed memory\n"); + fprintf(stderr,"\t%s %ld\n",((head *)ptr)->file,((head *)ptr)->line); + } + + if(global_bytes<0){ + fprintf(stderr,"DEBUGGING MALLOC ERROR: freeing unmalloced memory\n"); + } + + pointers[insert]=NULL; +} + +void _VDBG_dump(void){ + int i; + for(i=0;ifile,ptr->line); + } + +} + +extern void *_VDBG_malloc(void *ptr,long bytes,char *file,long line){ + bytes+=HEAD_ALIGN; + if(ptr){ + ptr=(void *)(((char *)ptr)-HEAD_ALIGN); + _ripremove(ptr); + ptr=realloc(ptr,bytes); + }else{ + ptr=malloc(bytes); + memset(ptr,0,bytes); + } + return _insert(ptr,bytes,file,line); +} + +extern void _VDBG_free(void *ptr,char *file,long line){ + if(ptr){ + ptr=(void *)(((char *)ptr)-HEAD_ALIGN); + _ripremove(ptr); + free(ptr); + } +} + diff --git a/Tremolo/misc.h b/Tremolo/misc.h new file mode 100644 index 0000000..b6b9386 --- /dev/null +++ b/Tremolo/misc.h @@ -0,0 +1,192 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: miscellaneous math and prototypes + + ********************************************************************/ + +#ifndef _V_RANDOM_H_ +#define _V_RANDOM_H_ +#include "ivorbiscodec.h" +#include "os_types.h" + +/*#define _VDBG_GRAPHFILE "_0.m"*/ + + +#ifdef _VDBG_GRAPHFILE +extern void *_VDBG_malloc(void *ptr,long bytes,char *file,long line); +extern void _VDBG_free(void *ptr,char *file,long line); + +#undef _ogg_malloc +#undef _ogg_calloc +#undef _ogg_realloc +#undef _ogg_free + +#define _ogg_malloc(x) _VDBG_malloc(NULL,(x),__FILE__,__LINE__) +#define _ogg_calloc(x,y) _VDBG_malloc(NULL,(x)*(y),__FILE__,__LINE__) +#define _ogg_realloc(x,y) _VDBG_malloc((x),(y),__FILE__,__LINE__) +#define _ogg_free(x) _VDBG_free((x),__FILE__,__LINE__) +#endif + +#include "asm_arm.h" + +#ifndef _V_WIDE_MATH +#define _V_WIDE_MATH + +#ifndef _LOW_ACCURACY_ +/* 64 bit multiply */ + +#include + +#if BYTE_ORDER==LITTLE_ENDIAN +union magic { + struct { + ogg_int32_t lo; + ogg_int32_t hi; + } halves; + ogg_int64_t whole; +}; +#endif + +#if BYTE_ORDER==BIG_ENDIAN +union magic { + struct { + ogg_int32_t hi; + ogg_int32_t lo; + } halves; + ogg_int64_t whole; +}; +#endif + +static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + union magic magic; + magic.whole = (ogg_int64_t)x * y; + return magic.halves.hi; +} + +static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return MULT32(x,y)<<1; +} + +static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + union magic magic; + magic.whole = (ogg_int64_t)x * y; + return ((ogg_uint32_t)(magic.halves.lo)>>15) | ((magic.halves.hi)<<17); +} + +#else +/* 32 bit multiply, more portable but less accurate */ + +/* + * Note: Precision is biased towards the first argument therefore ordering + * is important. Shift values were chosen for the best sound quality after + * many listening tests. + */ + +/* + * For MULT32 and MULT31: The second argument is always a lookup table + * value already preshifted from 31 to 8 bits. We therefore take the + * opportunity to save on text space and use unsigned char for those + * tables in this case. + */ + +static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { + return (x >> 9) * y; /* y preshifted >>23 */ +} + +static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { + return (x >> 8) * y; /* y preshifted >>23 */ +} + +static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { + return (x >> 6) * y; /* y preshifted >>9 */ +} + +#endif + +/* + * This should be used as a memory barrier, forcing all cached values in + * registers to wr writen back to memory. Might or might not be beneficial + * depending on the architecture and compiler. + */ +#define MB() + +/* + * The XPROD functions are meant to optimize the cross products found all + * over the place in mdct.c by forcing memory operation ordering to avoid + * unnecessary register reloads as soon as memory is being written to. + * However this is only beneficial on CPUs with a sane number of general + * purpose registers which exclude the Intel x86. On Intel, better let the + * compiler actually reload registers directly from original memory by using + * macros. + */ + +#ifdef __i386__ + +#define XPROD32(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT32(_a,_t)+MULT32(_b,_v); \ + *(_y)=MULT32(_b,_t)-MULT32(_a,_v); } +#define XPROD31(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT31(_a,_t)+MULT31(_b,_v); \ + *(_y)=MULT31(_b,_t)-MULT31(_a,_v); } +#define XNPROD31(_a, _b, _t, _v, _x, _y) \ + { *(_x)=MULT31(_a,_t)-MULT31(_b,_v); \ + *(_y)=MULT31(_b,_t)+MULT31(_a,_v); } + +#else + +static inline void XPROD32(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT32(a, t) + MULT32(b, v); + *y = MULT32(b, t) - MULT32(a, v); +} + +static inline void XPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT31(a, t) + MULT31(b, v); + *y = MULT31(b, t) - MULT31(a, v); +} + +static inline void XNPROD31(ogg_int32_t a, ogg_int32_t b, + ogg_int32_t t, ogg_int32_t v, + ogg_int32_t *x, ogg_int32_t *y) +{ + *x = MULT31(a, t) - MULT31(b, v); + *y = MULT31(b, t) + MULT31(a, v); +} + +#endif + +#endif + +#ifndef _V_CLIP_MATH +#define _V_CLIP_MATH + +static inline ogg_int32_t CLIP_TO_15(ogg_int32_t x) { + int ret=x; + ret-= ((x<=32767)-1)&(x-32767); + ret-= ((x>=-32768)-1)&(x+32768); + return(ret); +} + +#endif + +#endif + + + + diff --git a/Tremolo/ogg.h b/Tremolo/ogg.h new file mode 100644 index 0000000..c5c3106 --- /dev/null +++ b/Tremolo/ogg.h @@ -0,0 +1,223 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE Theorarm SOFTWARE CODEC SOURCE CODE. * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE Theora/Tremor SOURCE CODE IS COPYRIGHT (C) 2002-2009 * + * by the Xiph.Org Foundation and contributors http://www.xiph.org/ * + * Modifications/Additions Copyright (C) 2009 Robin Watts for * + * Pinknoise Productions Ltd. * + * * + ******************************************************************** + + function: subsumed libogg includes + + ********************************************************************/ +#ifndef _OGG_H +#define _OGG_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "os_types.h" + +#ifndef ONLY_C +#define ARM_LITTLE_ENDIAN +#endif + +typedef struct ogg_buffer_state{ + struct ogg_buffer *unused_buffers; + struct ogg_reference *unused_references; + int outstanding; + int shutdown; +} ogg_buffer_state; + +typedef struct ogg_buffer { + unsigned char *data; + long size; + int refcount; + + union { + ogg_buffer_state *owner; + struct ogg_buffer *next; + } ptr; +} ogg_buffer; + +typedef struct ogg_reference { + ogg_buffer *buffer; + long begin; + long length; + + struct ogg_reference *next; +} ogg_reference; + +typedef struct oggpack_buffer { +#ifdef ARM_LITTLE_ENDIAN + int bitsLeftInSegment; + ogg_uint32_t *ptr; + long bitsLeftInWord; +#else + int headbit; + unsigned char *headptr; + long headend; +#endif /* ARM_LITTLE_ENDIAN */ + /* memory management */ + ogg_reference *head; + ogg_reference *tail; + + /* render the byte/bit counter API constant time */ + long count; /* doesn't count the tail */ +} oggpack_buffer; + +typedef struct oggbyte_buffer { + ogg_reference *baseref; + + ogg_reference *ref; + unsigned char *ptr; + long pos; + long end; +} oggbyte_buffer; + +typedef struct ogg_sync_state { + /* decode memory management pool */ + ogg_buffer_state *bufferpool; + + /* stream buffers */ + ogg_reference *fifo_head; + ogg_reference *fifo_tail; + long fifo_fill; + + /* stream sync management */ + int unsynced; + int headerbytes; + int bodybytes; + +} ogg_sync_state; + +typedef struct ogg_stream_state { + ogg_reference *header_head; + ogg_reference *header_tail; + ogg_reference *body_head; + ogg_reference *body_tail; + + int e_o_s; /* set when we have buffered the last + packet in the logical bitstream */ + int b_o_s; /* set after we've written the initial page + of a logical bitstream */ + long serialno; + long pageno; + ogg_int64_t packetno; /* sequence number for decode; the framing + knows where there's a hole in the data, + but we need coupling so that the codec + (which is in a seperate abstraction + layer) also knows about the gap */ + ogg_int64_t granulepos; + + int lacing_fill; + ogg_uint32_t body_fill; + + /* decode-side state data */ + int holeflag; + int spanflag; + int clearflag; + int laceptr; + ogg_uint32_t body_fill_next; + +} ogg_stream_state; + +typedef struct { + ogg_reference *packet; + long bytes; + long b_o_s; + long e_o_s; + ogg_int64_t granulepos; + ogg_int64_t packetno; /* sequence number for decode; the framing + knows where there's a hole in the data, + but we need coupling so that the codec + (which is in a seperate abstraction + layer) also knows about the gap */ +} ogg_packet; + +typedef struct { + ogg_reference *header; + int header_len; + ogg_reference *body; + long body_len; +} ogg_page; + +/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/ + +extern void oggpack_readinit(oggpack_buffer *b,ogg_reference *r); +extern long oggpack_look(oggpack_buffer *b,int bits); +extern void oggpack_adv(oggpack_buffer *b,int bits); +extern long oggpack_read(oggpack_buffer *b,int bits); +extern long oggpack_bytes(oggpack_buffer *b); +extern long oggpack_bits(oggpack_buffer *b); +extern int oggpack_eop(oggpack_buffer *b); + +// Quick hack +#define oggpack_bytesleft(B) (((B)->bitsLeftInSegment+7)/8) + +/* Ogg BITSTREAM PRIMITIVES: decoding **************************/ + +extern void ogg_sync_init(ogg_sync_state *oy); +extern ogg_sync_state *ogg_sync_create(void); +extern int ogg_sync_clear(ogg_sync_state *oy); +extern int ogg_sync_destroy(ogg_sync_state *oy); +extern int ogg_sync_reset(ogg_sync_state *oy); + +extern unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long size); +extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes); +extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og); +extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og); +extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og); +extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op); +extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op); + +/* Ogg BITSTREAM PRIMITIVES: general ***************************/ + +extern void ogg_stream_init(ogg_stream_state *os, int serialno); +extern ogg_stream_state *ogg_stream_create(int serialno); +extern int ogg_stream_destroy(ogg_stream_state *os); +extern int ogg_stream_clear(ogg_stream_state *os); +extern int ogg_stream_reset(ogg_stream_state *os); +extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno); +extern int ogg_stream_eos(ogg_stream_state *os); + +extern int ogg_page_checksum_set(ogg_page *og); + +extern int ogg_page_version(ogg_page *og); +extern int ogg_page_continued(ogg_page *og); +extern int ogg_page_bos(ogg_page *og); +extern int ogg_page_eos(ogg_page *og); +extern ogg_int64_t ogg_page_granulepos(ogg_page *og); +extern ogg_uint32_t ogg_page_serialno(ogg_page *og); +extern ogg_uint32_t ogg_page_pageno(ogg_page *og); +extern int ogg_page_packets(ogg_page *og); +extern int ogg_page_getbuffer(ogg_page *og, unsigned char **buffer); + +extern int ogg_packet_release(ogg_packet *op); +extern int ogg_page_release(ogg_page *og); + +extern void ogg_page_dup(ogg_page *d, ogg_page *s); + +/* Ogg BITSTREAM PRIMITIVES: return codes ***************************/ + +#define OGG_SUCCESS 0 + +#define OGG_HOLE -10 +#define OGG_SPAN -11 +#define OGG_EVERSION -12 +#define OGG_ESERIAL -13 +#define OGG_EINVAL -14 +#define OGG_EEOS -15 + + +#ifdef __cplusplus +} +#endif + +#endif /* _OGG_H */ diff --git a/Tremolo/os.h b/Tremolo/os.h new file mode 100644 index 0000000..65a4992 --- /dev/null +++ b/Tremolo/os.h @@ -0,0 +1,62 @@ +#ifndef _OS_H +#define _OS_H +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: #ifdef jail to whip a few platforms into the UNIX ideal. + + ********************************************************************/ + +#include +#include "os_types.h" + +#ifndef _V_IFDEFJAIL_H_ +# define _V_IFDEFJAIL_H_ + +# ifdef __GNUC__ +# define STIN static __inline__ +# elif _WIN32 +# define STIN static __inline +# endif +#else +# define STIN static +#endif + +#ifndef M_PI +# define M_PI (3.1415926536f) +#endif + +#ifdef _WIN32 +# include +# define rint(x) (floor((x)+0.5f)) +# define NO_FLOAT_MATH_LIB +# define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) +#endif + +#ifdef HAVE_ALLOCA_H +# include +#endif + +#ifdef USE_MEMORY_H +# include +#endif + +#ifndef min +# define min(x,y) ((x)>(y)?(y):(x)) +#endif + +#ifndef max +# define max(x,y) ((x)<(y)?(y):(x)) +#endif + +#endif /* _OS_H */ diff --git a/Tremolo/os_types.h b/Tremolo/os_types.h new file mode 100644 index 0000000..1549b80 --- /dev/null +++ b/Tremolo/os_types.h @@ -0,0 +1,104 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE Theorarm SOFTWARE CODEC SOURCE CODE. * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE Theora/Tremor SOURCE CODE IS COPYRIGHT (C) 2002-2009 * + * by the Xiph.Org Foundation and contributors http://www.xiph.org/ * + * Modifications/Additions Copyright (C) 2009 Robin Watts for * + * Pinknoise Productions Ltd. * + * * + ******************************************************************** + + function: #ifdef jail to whip a few platforms into the UNIX ideal. + + ********************************************************************/ +#ifndef _OS_TYPES_H +#define _OS_TYPES_H + +#ifdef _LOW_ACCURACY_ +# define X(n) (((((n)>>22)+1)>>1) - ((((n)>>22)+1)>>9)) +# define LOOKUP_T const unsigned char +#else +# define X(n) (n) +# define LOOKUP_T const ogg_int32_t +#endif + +/* make it easy on the folks that want to compile the libs with a + different malloc than stdlib */ +#define _ogg_malloc malloc +#define _ogg_calloc calloc +#define _ogg_realloc realloc +#define _ogg_free free + +#if defined (_WIN32_WCE) + + typedef unsigned short ogg_uint16_t; + typedef short ogg_int16_t; + typedef int ogg_int32_t; + typedef unsigned int ogg_uint32_t; + typedef __int64 ogg_int64_t; + + #define inline + +#elif defined(_WIN32) + +# ifndef __GNUC__ + /* MSVC/Borland */ + typedef __int64 ogg_int64_t; + typedef __int32 ogg_int32_t; + typedef unsigned __int32 ogg_uint32_t; + typedef __int16 ogg_int16_t; + typedef unsigned __int16 ogg_uint16_t; +# else + /* Cygwin */ + #include <_G_config.h> + typedef _G_int64_t ogg_int64_t; + typedef _G_int32_t ogg_int32_t; + typedef _G_uint32_t ogg_uint32_t; + typedef _G_int16_t ogg_int16_t; + typedef _G_uint16_t ogg_uint16_t; +# endif + +#elif defined(__MACOS__) + +# include + typedef SInt16 ogg_int16_t; + typedef UInt16 ogg_uint16_t; + typedef SInt32 ogg_int32_t; + typedef UInt32 ogg_uint32_t; + typedef SInt64 ogg_int64_t; + +#elif defined(__MACOSX__) /* MacOS X Framework build */ + +# include + typedef int16_t ogg_int16_t; + typedef u_int16_t ogg_uint16_t; + typedef int32_t ogg_int32_t; + typedef u_int32_t ogg_uint32_t; + typedef int64_t ogg_int64_t; + +#elif defined(__BEOS__) + + /* Be */ +# include + +#elif defined (__EMX__) + + /* OS/2 GCC */ + typedef short ogg_int16_t; + typedef unsigned short ogg_uint16_t; + typedef int ogg_int32_t; + typedef unsigned int ogg_uint32_t; + typedef long long ogg_int64_t; + +#else + +# include +# include "config_types.h" + +#endif + +#endif /* _OS_TYPES_H */ diff --git a/Tremolo/res012.c b/Tremolo/res012.c new file mode 100644 index 0000000..4f659af --- /dev/null +++ b/Tremolo/res012.c @@ -0,0 +1,224 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: residue backend 0, 1 and 2 implementation + + ********************************************************************/ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "codebook.h" +#include "misc.h" +#include "os.h" + +void res_clear_info(vorbis_info_residue *info){ + if(info){ + if(info->stagemasks)_ogg_free(info->stagemasks); + if(info->stagebooks)_ogg_free(info->stagebooks); + memset(info,0,sizeof(*info)); + } +} + + +/* vorbis_info is for range checking */ +int res_unpack(vorbis_info_residue *info, + vorbis_info *vi,oggpack_buffer *opb){ + int j,k; + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + memset(info,0,sizeof(*info)); + + info->type=oggpack_read(opb,16); + if(info->type>2 || info->type<0)goto errout; + info->begin=oggpack_read(opb,24); + info->end=oggpack_read(opb,24); + info->grouping=oggpack_read(opb,24)+1; + info->partitions=(char)(oggpack_read(opb,6)+1); + info->groupbook=(unsigned char)oggpack_read(opb,8); + if(info->groupbook>=ci->books)goto errout; + + info->stagemasks=_ogg_malloc(info->partitions*sizeof(*info->stagemasks)); + info->stagebooks=_ogg_malloc(info->partitions*8*sizeof(*info->stagebooks)); + + for(j=0;jpartitions;j++){ + int cascade=oggpack_read(opb,3); + if(oggpack_read(opb,1)) + cascade|=(oggpack_read(opb,5)<<3); + info->stagemasks[j]=cascade; + } + + for(j=0;jpartitions;j++){ + for(k=0;k<8;k++){ + if((info->stagemasks[j]>>k)&1){ + unsigned char book=(unsigned char)oggpack_read(opb,8); + if(book>=ci->books)goto errout; + info->stagebooks[j*8+k]=book; + if(k+1>info->stages)info->stages=k+1; + }else + info->stagebooks[j*8+k]=0xff; + } + } + + if(oggpack_eop(opb))goto errout; + + return 0; + errout: + res_clear_info(info); + return 1; +} + +int res_inverse(vorbis_dsp_state *vd,vorbis_info_residue *info, + ogg_int32_t **in,int *nonzero,int ch){ + + int i,j,k,s,used=0; + codec_setup_info *ci=(codec_setup_info *)vd->vi->codec_setup; + codebook *phrasebook=ci->book_param+info->groupbook; + int samples_per_partition=info->grouping; + int partitions_per_word=phrasebook->dim; + int pcmend=ci->blocksizes[vd->W]; + + if(info->type<2){ + int max=pcmend>>1; + int end=(info->endend:max); + int n=end-info->begin; + + if(n>0){ + int partvals=n/samples_per_partition; + int partwords=(partvals+partitions_per_word-1)/partitions_per_word; + + for(i=0;istages;s++){ + + for(i=0;i=0;k--) + partword[0][i+k]=partword[0][i+k+1]*info->partitions; + + for(j=1;j=0;k--) + partword[j][i+k]=partword[j-1][i+k]; + + for(j=0;jopb); + if(temp==-1)goto eopbreak; + + /* this can be done quickly in assembly due to the quotient + always being at most six bits */ + for(k=0;kbegin+i*samples_per_partition; + if(info->stagemasks[(int)partword[j][i]]&(1<book_param+ + info->stagebooks[(partword[j][i]<<3)+s]; + if(info->type){ + if(vorbis_book_decodev_add(stagebook,in[j]+offset,&vd->opb, + samples_per_partition,-8)==-1) + goto eopbreak; + }else{ + if(vorbis_book_decodevs_add(stagebook,in[j]+offset,&vd->opb, + samples_per_partition,-8)==-1) + goto eopbreak; + } + } + } + } + } + } + } + }else{ + int max=(pcmend*ch)>>1; + int end=(info->endend:max); + int n=end-info->begin; + + if(n>0){ + int partvals=n/samples_per_partition; + int partwords=(partvals+partitions_per_word-1)/partitions_per_word; + + char *partword= + (char *)alloca(partwords*partitions_per_word*sizeof(*partword)); + int beginoff=info->begin/ch; + + for(i=0;istages;s++){ + for(i=0;i=0;k--) + partword[i+k]=partword[i+k+1]*info->partitions; + + /* fetch the partition word */ + temp=vorbis_book_decode(phrasebook,&vd->opb); + if(temp==-1)goto eopbreak; + + /* this can be done quickly in assembly due to the quotient + always being at most six bits */ + for(k=0;kstagemasks[(int)partword[i]]&(1<book_param+ + info->stagebooks[(partword[i]<<3)+s]; + if(vorbis_book_decodevv_add(stagebook,in, + i*samples_per_partition+beginoff,ch, + &vd->opb, + samples_per_partition,-8)==-1) + goto eopbreak; + } + } + } + } + } + eopbreak: + + return 0; +} + diff --git a/Tremolo/treminfo.c b/Tremolo/treminfo.c new file mode 100644 index 0000000..5373885 --- /dev/null +++ b/Tremolo/treminfo.c @@ -0,0 +1,348 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: maintain the info structure, info <-> header packets + + ********************************************************************/ + +/* general handling of the header and the vorbis_info structure (and + substructures) */ + +#include +#include +#include +#include "ogg.h" +#include "ivorbiscodec.h" +#include "codec_internal.h" +#include "codebook.h" +#include "misc.h" +#include "os.h" + +/* helpers */ +static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){ + while(bytes--){ + *buf++=(char)oggpack_read(o,8); + } +} + +void vorbis_comment_init(vorbis_comment *vc){ + memset(vc,0,sizeof(*vc)); +} + +/* This is more or less the same as strncasecmp - but that doesn't exist + * everywhere, and this is a fairly trivial function, so we include it */ +static int tagcompare(const char *s1, const char *s2, int n){ + int c=0; + while(c < n){ + if(toupper(s1[c]) != toupper(s2[c])) + return !0; + c++; + } + return 0; +} + +char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count){ + long i; + int found = 0; + int taglen = strlen(tag)+1; /* +1 for the = we append */ + char *fulltag = (char *)alloca(taglen+ 1); + + strcpy(fulltag, tag); + strcat(fulltag, "="); + + for(i=0;icomments;i++){ + if(!tagcompare(vc->user_comments[i], fulltag, taglen)){ + if(count == found) + /* We return a pointer to the data, not a copy */ + return vc->user_comments[i] + taglen; + else + found++; + } + } + return NULL; /* didn't find anything */ +} + +int vorbis_comment_query_count(vorbis_comment *vc, char *tag){ + int i,count=0; + int taglen = strlen(tag)+1; /* +1 for the = we append */ + char *fulltag = (char *)alloca(taglen+1); + strcpy(fulltag,tag); + strcat(fulltag, "="); + + for(i=0;icomments;i++){ + if(!tagcompare(vc->user_comments[i], fulltag, taglen)) + count++; + } + + return count; +} + +void vorbis_comment_clear(vorbis_comment *vc){ + if(vc){ + long i; + for(i=0;icomments;i++) + if(vc->user_comments[i])_ogg_free(vc->user_comments[i]); + if(vc->user_comments)_ogg_free(vc->user_comments); + if(vc->comment_lengths)_ogg_free(vc->comment_lengths); + if(vc->vendor)_ogg_free(vc->vendor); + } + memset(vc,0,sizeof(*vc)); +} + +/* blocksize 0 is guaranteed to be short, 1 is guarantted to be long. + They may be equal, but short will never ge greater than long */ +int vorbis_info_blocksize(vorbis_info *vi,int zo){ + codec_setup_info *ci = (codec_setup_info *)vi->codec_setup; + return ci ? ci->blocksizes[zo] : -1; +} + +/* used by synthesis, which has a full, alloced vi */ +void vorbis_info_init(vorbis_info *vi){ + memset(vi,0,sizeof(*vi)); + vi->codec_setup=(codec_setup_info *)_ogg_calloc(1,sizeof(codec_setup_info)); +} + +void vorbis_info_clear(vorbis_info *vi){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int i; + + if(ci){ + + if(ci->mode_param)_ogg_free(ci->mode_param); + + if(ci->map_param){ + for(i=0;imaps;i++) /* unpack does the range checking */ + mapping_clear_info(ci->map_param+i); + _ogg_free(ci->map_param); + } + + if(ci->floor_param){ + for(i=0;ifloors;i++) /* unpack does the range checking */ + if(ci->floor_type[i]) + floor1_free_info(ci->floor_param[i]); + else + floor0_free_info(ci->floor_param[i]); + _ogg_free(ci->floor_param); + _ogg_free(ci->floor_type); + } + + if(ci->residue_param){ + for(i=0;iresidues;i++) /* unpack does the range checking */ + res_clear_info(ci->residue_param+i); + _ogg_free(ci->residue_param); + } + + if(ci->book_param){ + for(i=0;ibooks;i++) + vorbis_book_clear(ci->book_param+i); + _ogg_free(ci->book_param); + } + + _ogg_free(ci); + } + + memset(vi,0,sizeof(*vi)); +} + +/* Header packing/unpacking ********************************************/ + +static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + if(!ci)return(OV_EFAULT); + + vi->version=oggpack_read(opb,32); + if(vi->version!=0)return(OV_EVERSION); + + vi->channels=oggpack_read(opb,8); + vi->rate=oggpack_read(opb,32); + + vi->bitrate_upper=oggpack_read(opb,32); + vi->bitrate_nominal=oggpack_read(opb,32); + vi->bitrate_lower=oggpack_read(opb,32); + + ci->blocksizes[0]=1<blocksizes[1]=1<rate>=64000 || ci->blocksizes[1]>4096)goto err_out; +#else + if(vi->rate<64000 && ci->blocksizes[1]>4096)goto err_out; +#endif + + if(vi->rate<1)goto err_out; + if(vi->channels<1)goto err_out; + if(ci->blocksizes[0]<64)goto err_out; + if(ci->blocksizes[1]blocksizes[0])goto err_out; + if(ci->blocksizes[1]>8192)goto err_out; + + if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */ + + return(0); + err_out: + vorbis_info_clear(vi); + return(OV_EBADHEADER); +} + +static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){ + int i; + int vendorlen=oggpack_read(opb,32); + if(vendorlen<0)goto err_out; + vc->vendor=(char *)_ogg_calloc(vendorlen+1,1); + _v_readstring(opb,vc->vendor,vendorlen); + vc->comments=oggpack_read(opb,32); + if(vc->comments<0)goto err_out; + vc->user_comments=(char **)_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments)); + vc->comment_lengths=(int *)_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths)); + + for(i=0;icomments;i++){ + int len=oggpack_read(opb,32); + if(len<0)goto err_out; + vc->comment_lengths[i]=len; + vc->user_comments[i]=(char *)_ogg_calloc(len+1,1); + _v_readstring(opb,vc->user_comments[i],len); + } + if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */ + + return(0); + err_out: + vorbis_comment_clear(vc); + return(OV_EBADHEADER); +} + +/* all of the real encoding details are here. The modes, books, + everything */ +static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){ + codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; + int i; + if(!ci)return(OV_EFAULT); + + /* codebooks */ + ci->books=oggpack_read(opb,8)+1; + ci->book_param=(codebook *)_ogg_calloc(ci->books,sizeof(*ci->book_param)); + for(i=0;ibooks;i++) + if(vorbis_book_unpack(opb,ci->book_param+i))goto err_out; + + /* time backend settings, not actually used */ + i=oggpack_read(opb,6); + for(;i>=0;i--) + if(oggpack_read(opb,16)!=0)goto err_out; + + /* floor backend settings */ + ci->floors=oggpack_read(opb,6)+1; + ci->floor_param=_ogg_malloc(sizeof(*ci->floor_param)*ci->floors); + ci->floor_type=_ogg_malloc(sizeof(*ci->floor_type)*ci->floors); + for(i=0;ifloors;i++){ + ci->floor_type[i]=(char)oggpack_read(opb,16); + if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)goto err_out; + if(ci->floor_type[i]) + ci->floor_param[i]=floor1_info_unpack(vi,opb); + else + ci->floor_param[i]=floor0_info_unpack(vi,opb); + if(!ci->floor_param[i])goto err_out; + } + + /* residue backend settings */ + ci->residues=oggpack_read(opb,6)+1; + ci->residue_param=_ogg_malloc(sizeof(*ci->residue_param)*ci->residues); + for(i=0;iresidues;i++) + if(res_unpack(ci->residue_param+i,vi,opb))goto err_out; + + /* map backend settings */ + ci->maps=oggpack_read(opb,6)+1; + ci->map_param=_ogg_malloc(sizeof(*ci->map_param)*ci->maps); + for(i=0;imaps;i++){ + if(oggpack_read(opb,16)!=0)goto err_out; + if(mapping_info_unpack(ci->map_param+i,vi,opb))goto err_out; + } + + /* mode settings */ + ci->modes=oggpack_read(opb,6)+1; + ci->mode_param= + (vorbis_info_mode *)_ogg_malloc(ci->modes*sizeof(*ci->mode_param)); + for(i=0;imodes;i++){ + ci->mode_param[i].blockflag=(unsigned char)oggpack_read(opb,1); + if(oggpack_read(opb,16))goto err_out; + if(oggpack_read(opb,16))goto err_out; + ci->mode_param[i].mapping=(unsigned char)oggpack_read(opb,8); + if(ci->mode_param[i].mapping>=ci->maps)goto err_out; + } + + if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */ + + return(0); + err_out: + vorbis_info_clear(vi); + return(OV_EBADHEADER); +} + +/* The Vorbis header is in three packets; the initial small packet in + the first page that identifies basic parameters, a second packet + with bitstream comments and a third packet that holds the + codebook. */ + +int vorbis_dsp_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){ + oggpack_buffer opb; + + if(op){ + oggpack_readinit(&opb,op->packet); + + /* Which of the three types of header is this? */ + /* Also verify header-ness, vorbis */ + { + char buffer[6]; + int packtype=oggpack_read(&opb,8); + memset(buffer,0,6); + _v_readstring(&opb,buffer,6); + if(memcmp(buffer,"vorbis",6)){ + /* not a vorbis header */ + return(OV_ENOTVORBIS); + } + switch(packtype){ + case 0x01: /* least significant *bit* is read first */ + if(!op->b_o_s){ + /* Not the initial packet */ + return(OV_EBADHEADER); + } + if(vi->rate!=0){ + /* previously initialized info header */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_info(vi,&opb)); + + case 0x03: /* least significant *bit* is read first */ + if(vi->rate==0){ + /* um... we didn't get the initial header */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_comment(vc,&opb)); + + case 0x05: /* least significant *bit* is read first */ + if(vi->rate==0 || vc->vendor==NULL){ + /* um... we didn;t get the initial header or comments yet */ + return(OV_EBADHEADER); + } + + return(_vorbis_unpack_books(vi,&opb)); + + default: + /* Not a valid vorbis header type */ + return(OV_EBADHEADER); + break; + } + } + } + return(OV_EBADHEADER); +} + diff --git a/Tremolo/vorbisfile.c b/Tremolo/vorbisfile.c new file mode 100644 index 0000000..7b6ce47 --- /dev/null +++ b/Tremolo/vorbisfile.c @@ -0,0 +1,1592 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: stdio-based convenience library for opening/seeking/decoding + last mod: $Id: vorbisfile.c,v 1.6.2.5 2003/11/20 06:16:17 xiphmont Exp $ + + ********************************************************************/ + +#include +#include +//#include +#include +#include + +#include "codec_internal.h" +#include "ivorbisfile.h" + +#include "os.h" +#include "misc.h" + +int errno; + +#define NOTOPEN 0 +#define PARTOPEN 1 +#define OPENED 2 +#define STREAMSET 3 /* serialno and link set, but not to current link */ +#define LINKSET 4 /* serialno and link set to current link */ +#define INITSET 5 + +/* A 'chained bitstream' is a Vorbis bitstream that contains more than + one logical bitstream arranged end to end (the only form of Ogg + multiplexing allowed in a Vorbis bitstream; grouping [parallel + multiplexing] is not allowed in Vorbis) */ + +/* A Vorbis file can be played beginning to end (streamed) without + worrying ahead of time about chaining (see decoder_example.c). If + we have the whole file, however, and want random access + (seeking/scrubbing) or desire to know the total length/time of a + file, we need to account for the possibility of chaining. */ + +/* We can handle things a number of ways; we can determine the entire + bitstream structure right off the bat, or find pieces on demand. + This example determines and caches structure for the entire + bitstream, but builds a virtual decoder on the fly when moving + between links in the chain. */ + +/* There are also different ways to implement seeking. Enough + information exists in an Ogg bitstream to seek to + sample-granularity positions in the output. Or, one can seek by + picking some portion of the stream roughly in the desired area if + we only want coarse navigation through the stream. */ + +/************************************************************************* + * Many, many internal helpers. The intention is not to be confusing; + * rampant duplication and monolithic function implementation would be + * harder to understand anyway. The high level functions are last. Begin + * grokking near the end of the file */ + + +/* read a little more data from the file/pipe into the ogg_sync framer */ +static long _get_data(OggVorbis_File *vf){ + errno=0; + if(vf->datasource){ + unsigned char *buffer=ogg_sync_bufferin(vf->oy,CHUNKSIZE); + long bytes=(vf->callbacks.read_func)(buffer,1,CHUNKSIZE,vf->datasource); + if(bytes>0)ogg_sync_wrote(vf->oy,bytes); + if(bytes==0 && errno)return -1; + return bytes; + }else + return 0; +} + +/* save a tiny smidge of verbosity to make the code more readable */ +static void _seek_helper(OggVorbis_File *vf,ogg_int64_t offset){ + if(vf->datasource){ + (vf->callbacks.seek_func)(vf->datasource, offset, SEEK_SET); + vf->offset=offset; + ogg_sync_reset(vf->oy); + }else{ + /* shouldn't happen unless someone writes a broken callback */ + return; + } +} + +/* The read/seek functions track absolute position within the stream */ + +/* from the head of the stream, get the next page. boundary specifies + if the function is allowed to fetch more data from the stream (and + how much) or only use internally buffered data. + + boundary: -1) unbounded search + 0) read no additional data; use cached only + n) search for a new page beginning for n bytes + + return: <0) did not find a page (OV_FALSE, OV_EOF, OV_EREAD) + n) found a page at absolute offset n + + produces a refcounted page */ + +static ogg_int64_t _get_next_page(OggVorbis_File *vf,ogg_page *og, + ogg_int64_t boundary){ + if(boundary>0)boundary+=vf->offset; + while(1){ + long more; + + if(boundary>0 && vf->offset>=boundary)return OV_FALSE; + more=ogg_sync_pageseek(vf->oy,og); + + if(more<0){ + /* skipped n bytes */ + vf->offset-=more; + }else{ + if(more==0){ + /* send more paramedics */ + if(!boundary)return OV_FALSE; + { + long ret=_get_data(vf); + if(ret==0)return OV_EOF; + if(ret<0)return OV_EREAD; + } + }else{ + /* got a page. Return the offset at the page beginning, + advance the internal offset past the page end */ + ogg_int64_t ret=vf->offset; + vf->offset+=more; + return ret; + + } + } + } +} + +/* find the latest page beginning before the current stream cursor + position. Much dirtier than the above as Ogg doesn't have any + backward search linkage. no 'readp' as it will certainly have to + read. */ +/* returns offset or OV_EREAD, OV_FAULT and produces a refcounted page */ + +static ogg_int64_t _get_prev_page(OggVorbis_File *vf,ogg_page *og){ + ogg_int64_t begin=vf->offset; + ogg_int64_t end=begin; + ogg_int64_t ret; + ogg_int64_t offset=-1; + + while(offset==-1){ + begin-=CHUNKSIZE; + if(begin<0) + begin=0; + _seek_helper(vf,begin); + while(vf->offsetoffset); + if(ret==OV_EREAD)return OV_EREAD; + if(ret<0){ + break; + }else{ + offset=ret; + } + } + } + + /* we have the offset. Actually snork and hold the page now */ + _seek_helper(vf,offset); + ret=_get_next_page(vf,og,CHUNKSIZE); + if(ret<0) + /* this shouldn't be possible */ + return OV_EFAULT; + + return offset; +} + +/* finds each bitstream link one at a time using a bisection search + (has to begin by knowing the offset of the lb's initial page). + Recurses for each link so it can alloc the link storage after + finding them all, then unroll and fill the cache at the same time */ +static int _bisect_forward_serialno(OggVorbis_File *vf, + ogg_int64_t begin, + ogg_int64_t searched, + ogg_int64_t end, + ogg_uint32_t currentno, + long m){ + ogg_int64_t endsearched=end; + ogg_int64_t next=end; + ogg_page og={0,0,0,0}; + ogg_int64_t ret; + + /* the below guards against garbage seperating the last and + first pages of two links. */ + while(searched=0)next=ret; + }else{ + searched=ret+og.header_len+og.body_len; + } + ogg_page_release(&og); + } + + _seek_helper(vf,next); + ret=_get_next_page(vf,&og,-1); + if(ret==OV_EREAD)return OV_EREAD; + + if(searched>=end || ret<0){ + ogg_page_release(&og); + vf->links=m+1; + vf->offsets=_ogg_malloc((vf->links+1)*sizeof(*vf->offsets)); + vf->serialnos=_ogg_malloc(vf->links*sizeof(*vf->serialnos)); + vf->offsets[m+1]=searched; + }else{ + ret=_bisect_forward_serialno(vf,next,vf->offset, + end,ogg_page_serialno(&og),m+1); + ogg_page_release(&og); + if(ret==OV_EREAD)return OV_EREAD; + } + + vf->offsets[m]=begin; + vf->serialnos[m]=currentno; + return 0; +} + +static int _decode_clear(OggVorbis_File *vf){ + if(vf->ready_state==INITSET){ + vorbis_dsp_destroy(vf->vd); + vf->vd=0; + vf->ready_state=STREAMSET; + } + + if(vf->ready_state>=STREAMSET){ + vorbis_info_clear(&vf->vi); + vorbis_comment_clear(&vf->vc); + vf->ready_state=OPENED; + } + return 0; +} + +/* uses the local ogg_stream storage in vf; this is important for + non-streaming input sources */ +/* consumes the page that's passed in (if any) */ +/* state is LINKSET upon successful return */ + +static int _fetch_headers(OggVorbis_File *vf, + vorbis_info *vi, + vorbis_comment *vc, + ogg_uint32_t *serialno, + ogg_page *og_ptr){ + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + int i,ret; + + if(vf->ready_state>OPENED)_decode_clear(vf); + + if(!og_ptr){ + ogg_int64_t llret=_get_next_page(vf,&og,CHUNKSIZE); + if(llret==OV_EREAD)return OV_EREAD; + if(llret<0)return OV_ENOTVORBIS; + og_ptr=&og; + } + + ogg_stream_reset_serialno(vf->os,ogg_page_serialno(og_ptr)); + if(serialno)*serialno=vf->os->serialno; + + /* extract the initial header from the first page and verify that the + Ogg bitstream is in fact Vorbis data */ + + vorbis_info_init(vi); + vorbis_comment_init(vc); + + i=0; + while(i<3){ + ogg_stream_pagein(vf->os,og_ptr); + while(i<3){ + int result=ogg_stream_packetout(vf->os,&op); + if(result==0)break; + if(result==-1){ + ret=OV_EBADHEADER; + goto bail_header; + } + if((ret=vorbis_dsp_headerin(vi,vc,&op))){ + goto bail_header; + } + i++; + } + if(i<3) + if(_get_next_page(vf,og_ptr,CHUNKSIZE)<0){ + ret=OV_EBADHEADER; + goto bail_header; + } + } + + ogg_packet_release(&op); + ogg_page_release(&og); + vf->ready_state=LINKSET; + return 0; + + bail_header: + ogg_packet_release(&op); + ogg_page_release(&og); + vorbis_info_clear(vi); + vorbis_comment_clear(vc); + vf->ready_state=OPENED; + + return ret; +} + +/* we no longer preload all vorbis_info (and the associated + codec_setup) structs. Call this to seek and fetch the info from + the bitstream, if needed */ +static int _set_link_number(OggVorbis_File *vf,int link){ + if(link != vf->current_link) _decode_clear(vf); + if(vf->ready_stateoffsets[link]); + ogg_stream_reset_serialno(vf->os,vf->serialnos[link]); + vf->current_serialno=vf->serialnos[link]; + vf->current_link=link; + return _fetch_headers(vf,&vf->vi,&vf->vc,&vf->current_serialno,NULL); + } + return 0; +} + +static int _set_link_number_preserve_pos(OggVorbis_File *vf,int link){ + ogg_int64_t pos=vf->offset; + int ret=_set_link_number(vf,link); + if(ret)return ret; + _seek_helper(vf,pos); + if(posoffsets[link] || pos>=vf->offsets[link+1]) + vf->ready_state=STREAMSET; + return 0; +} + +/* last step of the OggVorbis_File initialization; get all the offset + positions. Only called by the seekable initialization (local + stream storage is hacked slightly; pay attention to how that's + done) */ + +/* this is void and does not propogate errors up because we want to be + able to open and use damaged bitstreams as well as we can. Just + watch out for missing information for links in the OggVorbis_File + struct */ +static void _prefetch_all_offsets(OggVorbis_File *vf, ogg_int64_t dataoffset){ + ogg_page og={0,0,0,0}; + int i; + ogg_int64_t ret; + + vf->dataoffsets=_ogg_malloc(vf->links*sizeof(*vf->dataoffsets)); + vf->pcmlengths=_ogg_malloc(vf->links*2*sizeof(*vf->pcmlengths)); + + for(i=0;ilinks;i++){ + if(i==0){ + /* we already grabbed the initial header earlier. Just set the offset */ + vf->dataoffsets[i]=dataoffset; + _seek_helper(vf,dataoffset); + + }else{ + + /* seek to the location of the initial header */ + + _seek_helper(vf,vf->offsets[i]); + if(_fetch_headers(vf,&vf->vi,&vf->vc,NULL,NULL)<0){ + vf->dataoffsets[i]=-1; + }else{ + vf->dataoffsets[i]=vf->offset; + } + } + + /* fetch beginning PCM offset */ + + if(vf->dataoffsets[i]!=-1){ + ogg_int64_t accumulated=0,pos; + long lastblock=-1; + int result; + + ogg_stream_reset_serialno(vf->os,vf->serialnos[i]); + + while(1){ + ogg_packet op={0,0,0,0,0,0}; + + ret=_get_next_page(vf,&og,-1); + if(ret<0) + /* this should not be possible unless the file is + truncated/mangled */ + break; + + if(ogg_page_serialno(&og)!=vf->serialnos[i]) + break; + + pos=ogg_page_granulepos(&og); + + /* count blocksizes of all frames in the page */ + ogg_stream_pagein(vf->os,&og); + while((result=ogg_stream_packetout(vf->os,&op))){ + if(result>0){ /* ignore holes */ + long thisblock=vorbis_packet_blocksize(&vf->vi,&op); + if(lastblock!=-1) + accumulated+=(lastblock+thisblock)>>2; + lastblock=thisblock; + } + } + ogg_packet_release(&op); + + if(pos!=-1){ + /* pcm offset of last packet on the first audio page */ + accumulated= pos-accumulated; + break; + } + } + + /* less than zero? This is a stream with samples trimmed off + the beginning, a normal occurrence; set the offset to zero */ + if(accumulated<0)accumulated=0; + + vf->pcmlengths[i*2]=accumulated; + } + + /* get the PCM length of this link. To do this, + get the last page of the stream */ + { + ogg_int64_t end=vf->offsets[i+1]; + _seek_helper(vf,end); + + while(1){ + ret=_get_prev_page(vf,&og); + if(ret<0){ + /* this should not be possible */ + vorbis_info_clear(&vf->vi); + vorbis_comment_clear(&vf->vc); + break; + } + if(ogg_page_granulepos(&og)!=-1){ + vf->pcmlengths[i*2+1]=ogg_page_granulepos(&og)-vf->pcmlengths[i*2]; + break; + } + vf->offset=ret; + } + } + } + ogg_page_release(&og); +} + +static int _make_decode_ready(OggVorbis_File *vf){ + int i; + switch(vf->ready_state){ + case OPENED: + case STREAMSET: + for(i=0;ilinks;i++) + if(vf->offsets[i+1]>=vf->offset)break; + if(i==vf->links)return -1; + i=_set_link_number_preserve_pos(vf,i); + if(i)return i; + /* fall through */ + case LINKSET: + vf->vd=vorbis_dsp_create(&vf->vi); + vf->ready_state=INITSET; + vf->bittrack=0; + vf->samptrack=0; + case INITSET: + return 0; + default: + return -1; + } + +} + +static int _open_seekable2(OggVorbis_File *vf){ + ogg_uint32_t serialno=vf->current_serialno; + ogg_uint32_t tempserialno; + ogg_int64_t dataoffset=vf->offset, end; + ogg_page og={0,0,0,0}; + + /* we're partially open and have a first link header state in + storage in vf */ + /* we can seek, so set out learning all about this file */ + (vf->callbacks.seek_func)(vf->datasource,0,SEEK_END); + vf->offset=vf->end=(vf->callbacks.tell_func)(vf->datasource); + + /* We get the offset for the last page of the physical bitstream. + Most OggVorbis files will contain a single logical bitstream */ + end=_get_prev_page(vf,&og); + if(end<0)return (int)end; + + /* more than one logical bitstream? */ + tempserialno=ogg_page_serialno(&og); + ogg_page_release(&og); + + if(tempserialno!=serialno){ + + /* Chained bitstream. Bisect-search each logical bitstream + section. Do so based on serial number only */ + if(_bisect_forward_serialno(vf,0,0,end+1,serialno,0)<0)return OV_EREAD; + + }else{ + + /* Only one logical bitstream */ + if(_bisect_forward_serialno(vf,0,end,end+1,serialno,0))return OV_EREAD; + + } + + /* the initial header memory is referenced by vf after; don't free it */ + _prefetch_all_offsets(vf,dataoffset); + return ov_raw_seek(vf,0); +} + +/* fetch and process a packet. Handles the case where we're at a + bitstream boundary and dumps the decoding machine. If the decoding + machine is unloaded, it loads it. It also keeps pcm_offset up to + date (seek and read both use this. seek uses a special hack with + readp). + + return: <0) error, OV_HOLE (lost packet) or OV_EOF + 0) need more data (only if readp==0) + 1) got a packet +*/ + +static int _fetch_and_process_packet(OggVorbis_File *vf, + int readp, + int spanp){ + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + int ret=0; + + /* handle one packet. Try to fetch it from current stream state */ + /* extract packets from page */ + while(1){ + + /* process a packet if we can. If the machine isn't loaded, + neither is a page */ + if(vf->ready_state==INITSET){ + while(1) { + int result=ogg_stream_packetout(vf->os,&op); + ogg_int64_t granulepos; + + if(result<0){ + ret=OV_HOLE; /* hole in the data. */ + goto cleanup; + } + if(result>0){ + /* got a packet. process it */ + granulepos=op.granulepos; + if(!vorbis_dsp_synthesis(vf->vd,&op,1)){ /* lazy check for lazy + header handling. The + header packets aren't + audio, so if/when we + submit them, + vorbis_synthesis will + reject them */ + + vf->samptrack+=vorbis_dsp_pcmout(vf->vd,NULL,0); + vf->bittrack+=op.bytes*8; + + /* update the pcm offset. */ + if(granulepos!=-1 && !op.e_o_s){ + int link=(vf->seekable?vf->current_link:0); + int i,samples; + + /* this packet has a pcm_offset on it (the last packet + completed on a page carries the offset) After processing + (above), we know the pcm position of the *last* sample + ready to be returned. Find the offset of the *first* + + As an aside, this trick is inaccurate if we begin + reading anew right at the last page; the end-of-stream + granulepos declares the last frame in the stream, and the + last packet of the last page may be a partial frame. + So, we need a previous granulepos from an in-sequence page + to have a reference point. Thus the !op.e_o_s clause + above */ + + if(vf->seekable && link>0) + granulepos-=vf->pcmlengths[link*2]; + if(granulepos<0)granulepos=0; /* actually, this + shouldn't be possible + here unless the stream + is very broken */ + + samples=vorbis_dsp_pcmout(vf->vd,NULL,0); + + granulepos-=samples; + for(i=0;ipcmlengths[i*2+1]; + vf->pcm_offset=granulepos; + } + ret=1; + goto cleanup; + } + } + else + break; + } + } + + if(vf->ready_state>=OPENED){ + int ret; + if(!readp){ + ret=0; + goto cleanup; + } + ret=(int)_get_next_page(vf,&og,-1); + if(ret<0){ + ret=OV_EOF; /* eof. leave unitialized */ + goto cleanup; + } + + /* bitrate tracking; add the header's bytes here, the body bytes + are done by packet above */ + vf->bittrack+=og.header_len*8; + + /* has our decoding just traversed a bitstream boundary? */ + if(vf->ready_state==INITSET){ + if(vf->current_serialno!=ogg_page_serialno(&og)){ + if(!spanp){ + ret=OV_EOF; + goto cleanup; + } + + _decode_clear(vf); + } + } + } + + /* Do we need to load a new machine before submitting the page? */ + /* This is different in the seekable and non-seekable cases. + + In the seekable case, we already have all the header + information loaded and cached; we just initialize the machine + with it and continue on our merry way. + + In the non-seekable (streaming) case, we'll only be at a + boundary if we just left the previous logical bitstream and + we're now nominally at the header of the next bitstream + */ + + if(vf->ready_state!=INITSET){ + int link,ret; + + if(vf->ready_stateseekable){ + vf->current_serialno=ogg_page_serialno(&og); + + /* match the serialno to bitstream section. We use this rather than + offset positions to avoid problems near logical bitstream + boundaries */ + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links){ + ret=OV_EBADLINK; /* sign of a bogus stream. error out, + leave machine uninitialized */ + goto cleanup; + } + + vf->current_link=link; + ret=_fetch_headers(vf,&vf->vi,&vf->vc,&vf->current_serialno,&og); + if(ret) goto cleanup; + + }else{ + /* we're streaming */ + /* fetch the three header packets, build the info struct */ + + int ret=_fetch_headers(vf,&vf->vi,&vf->vc,&vf->current_serialno,&og); + if(ret) goto cleanup; + vf->current_link++; + } + } + + if(_make_decode_ready(vf)) return OV_EBADLINK; + } + ogg_stream_pagein(vf->os,&og); + } + cleanup: + ogg_packet_release(&op); + ogg_page_release(&og); + return ret; +} + +/* if, eg, 64 bit stdio is configured by default, this will build with + fseek64 */ +static int _fseek64_wrap(FILE *f,ogg_int64_t off,int whence){ + if(f==NULL)return -1; + return fseek(f,(long)off,whence); +} + +static int _ov_open1(void *f,OggVorbis_File *vf,char *initial, + long ibytes, ov_callbacks callbacks){ + int offsettest=(f?callbacks.seek_func(f,0,SEEK_CUR):-1); + int ret; + + memset(vf,0,sizeof(*vf)); + + /* Tremor assumes in multiple places that right shift of a signed + integer is an arithmetic shift */ + if( (-1>>1) != -1) return OV_EIMPL; + + vf->datasource=f; + vf->callbacks = callbacks; + + /* init the framing state */ + vf->oy=ogg_sync_create(); + + /* perhaps some data was previously read into a buffer for testing + against other stream types. Allow initialization from this + previously read data (as we may be reading from a non-seekable + stream) */ + if(initial){ + unsigned char *buffer=ogg_sync_bufferin(vf->oy,ibytes); + memcpy(buffer,initial,ibytes); + ogg_sync_wrote(vf->oy,ibytes); + } + + /* can we seek? Stevens suggests the seek test was portable */ + if(offsettest!=-1)vf->seekable=1; + + /* No seeking yet; Set up a 'single' (current) logical bitstream + entry for partial open */ + vf->links=1; + vf->os=ogg_stream_create(-1); /* fill in the serialno later */ + + /* Try to fetch the headers, maintaining all the storage */ + if((ret=_fetch_headers(vf,&vf->vi,&vf->vc,&vf->current_serialno,NULL))<0){ + vf->datasource=NULL; + ov_clear(vf); + }else if(vf->ready_state < PARTOPEN) + vf->ready_state=PARTOPEN; + return ret; +} + +static int _ov_open2(OggVorbis_File *vf){ + if(vf->ready_state < OPENED) + vf->ready_state=OPENED; + if(vf->seekable){ + int ret=_open_seekable2(vf); + if(ret){ + vf->datasource=NULL; + ov_clear(vf); + } + return ret; + } + return 0; +} + + +/* clear out the OggVorbis_File struct */ +int ov_clear(OggVorbis_File *vf){ + if(vf){ + vorbis_dsp_destroy(vf->vd); + vf->vd=0; + ogg_stream_destroy(vf->os); + vorbis_info_clear(&vf->vi); + vorbis_comment_clear(&vf->vc); + if(vf->dataoffsets)_ogg_free(vf->dataoffsets); + if(vf->pcmlengths)_ogg_free(vf->pcmlengths); + if(vf->serialnos)_ogg_free(vf->serialnos); + if(vf->offsets)_ogg_free(vf->offsets); + ogg_sync_destroy(vf->oy); + + if(vf->datasource)(vf->callbacks.close_func)(vf->datasource); + memset(vf,0,sizeof(*vf)); + } +#ifdef DEBUG_LEAKS + _VDBG_dump(); +#endif + return 0; +} + +/* inspects the OggVorbis file and finds/documents all the logical + bitstreams contained in it. Tries to be tolerant of logical + bitstream sections that are truncated/woogie. + + return: -1) error + 0) OK +*/ + +int ov_open_callbacks(void *f,OggVorbis_File *vf,char *initial,long ibytes, + ov_callbacks callbacks){ + int ret=_ov_open1(f,vf,initial,ibytes,callbacks); + if(ret)return ret; + return _ov_open2(vf); +} + +int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes){ + ov_callbacks callbacks = { + (size_t (*)(void *, size_t, size_t, void *)) fread, + (int (*)(void *, ogg_int64_t, int)) _fseek64_wrap, + (int (*)(void *)) fclose, + (long (*)(void *)) ftell + }; + + return ov_open_callbacks((void *)f, vf, initial, ibytes, callbacks); +} + +/* Only partially open the vorbis file; test for Vorbisness, and load + the headers for the first chain. Do not seek (although test for + seekability). Use ov_test_open to finish opening the file, else + ov_clear to close/free it. Same return codes as open. */ + +int ov_test_callbacks(void *f,OggVorbis_File *vf,char *initial,long ibytes, + ov_callbacks callbacks) +{ + return _ov_open1(f,vf,initial,ibytes,callbacks); +} + +int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes){ + ov_callbacks callbacks = { + (size_t (*)(void *, size_t, size_t, void *)) fread, + (int (*)(void *, ogg_int64_t, int)) _fseek64_wrap, + (int (*)(void *)) fclose, + (long (*)(void *)) ftell + }; + + return ov_test_callbacks((void *)f, vf, initial, ibytes, callbacks); +} + +int ov_test_open(OggVorbis_File *vf){ + if(vf->ready_state!=PARTOPEN)return OV_EINVAL; + return _ov_open2(vf); +} + +/* How many logical bitstreams in this physical bitstream? */ +long ov_streams(OggVorbis_File *vf){ + return vf->links; +} + +/* Is the FILE * associated with vf seekable? */ +long ov_seekable(OggVorbis_File *vf){ + return vf->seekable; +} + +/* returns the bitrate for a given logical bitstream or the entire + physical bitstream. If the file is open for random access, it will + find the *actual* average bitrate. If the file is streaming, it + returns the nominal bitrate (if set) else the average of the + upper/lower bounds (if set) else -1 (unset). + + If you want the actual bitrate field settings, get them from the + vorbis_info structs */ + +long ov_bitrate(OggVorbis_File *vf,int i){ + if(vf->ready_state=vf->links)return OV_EINVAL; + if(!vf->seekable && i!=0)return ov_bitrate(vf,0); + if(i<0){ + ogg_int64_t bits=0; + int i; + for(i=0;ilinks;i++) + bits+=(vf->offsets[i+1]-vf->dataoffsets[i])*8; + /* This once read: return(rint(bits/ov_time_total(vf,-1))); + * gcc 3.x on x86 miscompiled this at optimisation level 2 and above, + * so this is slightly transformed to make it work. + */ + return (long)(bits*1000/ov_time_total(vf,-1)); + }else{ + if(vf->seekable){ + /* return the actual bitrate */ + return (long)((vf->offsets[i+1]-vf->dataoffsets[i])*8000/ov_time_total(vf,i)); + }else{ + /* return nominal if set */ + if(vf->vi.bitrate_nominal>0){ + return vf->vi.bitrate_nominal; + }else{ + if(vf->vi.bitrate_upper>0){ + if(vf->vi.bitrate_lower>0){ + return (vf->vi.bitrate_upper+vf->vi.bitrate_lower)/2; + }else{ + return vf->vi.bitrate_upper; + } + } + return OV_FALSE; + } + } + } +} + +/* returns the actual bitrate since last call. returns -1 if no + additional data to offer since last call (or at beginning of stream), + EINVAL if stream is only partially open +*/ +long ov_bitrate_instant(OggVorbis_File *vf){ + long ret; + if(vf->ready_statesamptrack==0)return OV_FALSE; + ret=(long)(vf->bittrack/vf->samptrack*vf->vi.rate); + vf->bittrack=0; + vf->samptrack=0; + return ret; +} + +/* Guess */ +long ov_serialnumber(OggVorbis_File *vf,int i){ + if(i>=vf->links)return ov_serialnumber(vf,vf->links-1); + if(!vf->seekable && i>=0)return ov_serialnumber(vf,-1); + if(i<0){ + return vf->current_serialno; + }else{ + return vf->serialnos[i]; + } +} + +/* returns: total raw (compressed) length of content if i==-1 + raw (compressed) length of that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the length) + or if stream is only partially open +*/ +ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return OV_EINVAL; + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_raw_total(vf,i); + return acc; + }else{ + return vf->offsets[i+1]-vf->offsets[i]; + } +} + +/* returns: total PCM length (samples) of content if i==-1 PCM length + (samples) of that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the + length) or only partially open +*/ +ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return OV_EINVAL; + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_pcm_total(vf,i); + return acc; + }else{ + return vf->pcmlengths[i*2+1]; + } +} + +/* returns: total milliseconds of content if i==-1 + milliseconds in that logical bitstream for i==0 to n + OV_EINVAL if the stream is not seekable (we can't know the + length) or only partially open +*/ +ogg_int64_t ov_time_total(OggVorbis_File *vf,int i){ + if(vf->ready_stateseekable || i>=vf->links)return OV_EINVAL; + if(i<0){ + ogg_int64_t acc=0; + int i; + for(i=0;ilinks;i++) + acc+=ov_time_total(vf,i); + return acc; + }else{ + return ((ogg_int64_t)vf->pcmlengths[i*2+1])*1000/vf->vi.rate; + } +} + +/* seek to an offset relative to the *compressed* data. This also + scans packets to update the PCM cursor. It will cross a logical + bitstream boundary, but only if it can't get any packets out of the + tail of the bitstream we seek to (so no surprises). + + returns zero on success, nonzero on failure */ + +int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){ + ogg_stream_state *work_os=NULL; + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + + if(vf->ready_stateseekable) + return OV_ENOSEEK; /* don't dump machine if we can't seek */ + + if(pos<0 || pos>vf->end)return OV_EINVAL; + + /* don't yet clear out decoding machine (if it's initialized), in + the case we're in the same link. Restart the decode lapping, and + let _fetch_and_process_packet deal with a potential bitstream + boundary */ + vf->pcm_offset=-1; + ogg_stream_reset_serialno(vf->os, + vf->current_serialno); /* must set serialno */ + vorbis_dsp_restart(vf->vd); + + _seek_helper(vf,pos); + + /* we need to make sure the pcm_offset is set, but we don't want to + advance the raw cursor past good packets just to get to the first + with a granulepos. That's not equivalent behavior to beginning + decoding as immediately after the seek position as possible. + + So, a hack. We use two stream states; a local scratch state and + the shared vf->os stream state. We use the local state to + scan, and the shared state as a buffer for later decode. + + Unfortuantely, on the last page we still advance to last packet + because the granulepos on the last page is not necessarily on a + packet boundary, and we need to make sure the granpos is + correct. + */ + + { + int lastblock=0; + int accblock=0; + int thisblock; + int eosflag; + + work_os=ogg_stream_create(vf->current_serialno); /* get the memory ready */ + while(1){ + if(vf->ready_state>=STREAMSET){ + /* snarf/scan a packet if we can */ + int result=ogg_stream_packetout(work_os,&op); + + if(result>0){ + + if(vf->vi.codec_setup){ + thisblock=vorbis_packet_blocksize(&vf->vi,&op); + if(thisblock<0){ + ogg_stream_packetout(vf->os,NULL); + thisblock=0; + }else{ + + if(eosflag) + ogg_stream_packetout(vf->os,NULL); + else + if(lastblock)accblock+=(lastblock+thisblock)>>2; + } + + if(op.granulepos!=-1){ + int i,link=vf->current_link; + ogg_int64_t granulepos=op.granulepos-vf->pcmlengths[link*2]; + if(granulepos<0)granulepos=0; + + for(i=0;ipcmlengths[i*2+1]; + vf->pcm_offset=granulepos-accblock; + break; + } + lastblock=thisblock; + continue; + }else + ogg_stream_packetout(vf->os,NULL); + } + } + + if(!lastblock){ + if(_get_next_page(vf,&og,-1)<0){ + vf->pcm_offset=ov_pcm_total(vf,-1); + break; + } + }else{ + /* huh? Bogus stream with packets but no granulepos */ + vf->pcm_offset=-1; + break; + } + + /* did we just grab a page from other than current link? */ + if(vf->ready_state>=STREAMSET) + if(vf->current_serialno!=ogg_page_serialno(&og)){ + _decode_clear(vf); /* clear out stream state */ + ogg_stream_destroy(work_os); + } + + if(vf->ready_statecurrent_serialno=ogg_page_serialno(&og); + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links) + goto seek_error; /* sign of a bogus stream. error out, + leave machine uninitialized */ + + /* need to initialize machine to this link */ + { + int ret=_set_link_number_preserve_pos(vf,link); + if(ret) goto seek_error; + } + ogg_stream_reset_serialno(vf->os,vf->current_serialno); + ogg_stream_reset_serialno(work_os,vf->current_serialno); + + + } + + { + ogg_page dup; + ogg_page_dup(&dup,&og); + eosflag=ogg_page_eos(&og); + ogg_stream_pagein(vf->os,&og); + ogg_stream_pagein(work_os,&dup); + } + } + } + + ogg_packet_release(&op); + ogg_page_release(&og); + ogg_stream_destroy(work_os); + vf->bittrack=0; + vf->samptrack=0; + return 0; + + seek_error: + ogg_packet_release(&op); + ogg_page_release(&og); + + /* dump the machine so we're in a known state */ + vf->pcm_offset=-1; + ogg_stream_destroy(work_os); + _decode_clear(vf); + return OV_EBADLINK; +} + +/* Page granularity seek (faster than sample granularity because we + don't do the last bit of decode to find a specific sample). + + Seek to the last [granule marked] page preceeding the specified pos + location, such that decoding past the returned point will quickly + arrive at the requested position. */ +int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos){ + int link=-1; + ogg_int64_t result=0; + ogg_int64_t total=ov_pcm_total(vf,-1); + ogg_page og={0,0,0,0}; + ogg_packet op={0,0,0,0,0,0}; + + if(vf->ready_stateseekable)return OV_ENOSEEK; + if(pos<0 || pos>total)return OV_EINVAL; + + /* which bitstream section does this pcm offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + total-=vf->pcmlengths[link*2+1]; + if(pos>=total)break; + } + + + if(link!=vf->current_link){ + int ret=_set_link_number(vf,link); + if(ret) goto seek_error; + }else{ + vorbis_dsp_restart(vf->vd); + } + + ogg_stream_reset_serialno(vf->os,vf->serialnos[link]); + + /* search within the logical bitstream for the page with the highest + pcm_pos preceeding (or equal to) pos. There is a danger here; + missing pages or incorrect frame number information in the + bitstream could make our task impossible. Account for that (it + would be an error condition) */ + + /* new search algorithm by HB (Nicholas Vinen) */ + { + ogg_int64_t end=vf->offsets[link+1]; + ogg_int64_t begin=vf->offsets[link]; + ogg_int64_t begintime = vf->pcmlengths[link*2]; + ogg_int64_t endtime = vf->pcmlengths[link*2+1]+begintime; + ogg_int64_t target=pos-total+begintime; + ogg_int64_t best=begin; + + while(beginoffset); + if(result==OV_EREAD) goto seek_error; + if(result<0){ + if(bisect<=begin+1) + end=begin; /* found it */ + else{ + if(bisect==0) goto seek_error; + bisect-=CHUNKSIZE; + if(bisect<=begin)bisect=begin+1; + _seek_helper(vf,bisect); + } + }else{ + ogg_int64_t granulepos=ogg_page_granulepos(&og); + if(granulepos==-1)continue; + if(granuleposoffset; /* raw offset of next page */ + begintime=granulepos; + + if(target-begintime>44100)break; + bisect=begin; /* *not* begin + 1 */ + }else{ + if(bisect<=begin+1) + end=begin; /* found it */ + else{ + if(end==vf->offset){ /* we're pretty close - we'd be stuck in */ + end=result; + bisect-=CHUNKSIZE; /* an endless loop otherwise. */ + if(bisect<=begin)bisect=begin+1; + _seek_helper(vf,bisect); + }else{ + end=result; + endtime=granulepos; + break; + } + } + } + } + } + } + + /* found our page. seek to it, update pcm offset. Easier case than + raw_seek, don't keep packets preceeding granulepos. */ + { + + /* seek */ + _seek_helper(vf,best); + vf->pcm_offset=-1; + + if(_get_next_page(vf,&og,-1)<0){ + ogg_page_release(&og); + return OV_EOF; /* shouldn't happen */ + } + + ogg_stream_pagein(vf->os,&og); + + /* pull out all but last packet; the one with granulepos */ + while(1){ + result=ogg_stream_packetpeek(vf->os,&op); + if(result==0){ + /* !!! the packet finishing this page originated on a + preceeding page. Keep fetching previous pages until we + get one with a granulepos or without the 'continued' flag + set. Then just use raw_seek for simplicity. */ + + _seek_helper(vf,best); + + while(1){ + result=_get_prev_page(vf,&og); + if(result<0) goto seek_error; + if(ogg_page_granulepos(&og)>-1 || + !ogg_page_continued(&og)){ + return ov_raw_seek(vf,result); + } + vf->offset=result; + } + } + if(result<0){ + result = OV_EBADPACKET; + goto seek_error; + } + if(op.granulepos!=-1){ + vf->pcm_offset=op.granulepos-vf->pcmlengths[vf->current_link*2]; + if(vf->pcm_offset<0)vf->pcm_offset=0; + vf->pcm_offset+=total; + break; + }else + result=ogg_stream_packetout(vf->os,NULL); + } + } + } + + /* verify result */ + if(vf->pcm_offset>pos || pos>ov_pcm_total(vf,-1)){ + result=OV_EFAULT; + goto seek_error; + } + vf->bittrack=0; + vf->samptrack=0; + + ogg_page_release(&og); + ogg_packet_release(&op); + return 0; + + seek_error: + + ogg_page_release(&og); + ogg_packet_release(&op); + + /* dump machine so we're in a known state */ + vf->pcm_offset=-1; + _decode_clear(vf); + return (int)result; +} + +/* seek to a sample offset relative to the decompressed pcm stream + returns zero on success, nonzero on failure */ + +int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos){ + ogg_packet op={0,0,0,0,0,0}; + ogg_page og={0,0,0,0}; + int thisblock,lastblock=0; + int ret=ov_pcm_seek_page(vf,pos); + if(ret<0)return ret; + if(_make_decode_ready(vf))return OV_EBADLINK; + + /* discard leading packets we don't need for the lapping of the + position we want; don't decode them */ + + while(1){ + + int ret=ogg_stream_packetpeek(vf->os,&op); + if(ret>0){ + thisblock=vorbis_packet_blocksize(&vf->vi,&op); + if(thisblock<0){ + ogg_stream_packetout(vf->os,NULL); + continue; /* non audio packet */ + } + if(lastblock)vf->pcm_offset+=(lastblock+thisblock)>>2; + + if(vf->pcm_offset+((thisblock+ + vorbis_info_blocksize(&vf->vi,1))>>2)>=pos)break; + + /* remove the packet from packet queue and track its granulepos */ + ogg_stream_packetout(vf->os,NULL); + vorbis_dsp_synthesis(vf->vd,&op,0); /* set up a vb with + only tracking, no + pcm_decode */ + + /* end of logical stream case is hard, especially with exact + length positioning. */ + + if(op.granulepos>-1){ + int i; + /* always believe the stream markers */ + vf->pcm_offset=op.granulepos-vf->pcmlengths[vf->current_link*2]; + if(vf->pcm_offset<0)vf->pcm_offset=0; + for(i=0;icurrent_link;i++) + vf->pcm_offset+=vf->pcmlengths[i*2+1]; + } + + lastblock=thisblock; + + }else{ + if(ret<0 && ret!=OV_HOLE)break; + + /* suck in a new page */ + if(_get_next_page(vf,&og,-1)<0)break; + if(vf->current_serialno!=ogg_page_serialno(&og))_decode_clear(vf); + + if(vf->ready_statecurrent_serialno=ogg_page_serialno(&og); + for(link=0;linklinks;link++) + if(vf->serialnos[link]==vf->current_serialno)break; + if(link==vf->links){ + ogg_page_release(&og); + ogg_packet_release(&op); + return OV_EBADLINK; + } + + + vf->current_link=link; + ret=_fetch_headers(vf,&vf->vi,&vf->vc,&vf->current_serialno,&og); + if(ret) return ret; + if(_make_decode_ready(vf))return OV_EBADLINK; + lastblock=0; + } + + ogg_stream_pagein(vf->os,&og); + } + } + + vf->bittrack=0; + vf->samptrack=0; + /* discard samples until we reach the desired position. Crossing a + logical bitstream boundary with abandon is OK. */ + while(vf->pcm_offsetpcm_offset; + long samples=vorbis_dsp_pcmout(vf->vd,NULL,0); + + if(samples>target)samples=(long)target; + vorbis_dsp_read(vf->vd,samples); + vf->pcm_offset+=samples; + + if(samplespcm_offset=ov_pcm_total(vf,-1); /* eof */ + } + + ogg_page_release(&og); + ogg_packet_release(&op); + return 0; +} + +/* seek to a playback time relative to the decompressed pcm stream + returns zero on success, nonzero on failure */ +int ov_time_seek(OggVorbis_File *vf,ogg_int64_t milliseconds){ + /* translate time to PCM position and call ov_pcm_seek */ + + int link=-1; + ogg_int64_t pcm_total=ov_pcm_total(vf,-1); + ogg_int64_t time_total=ov_time_total(vf,-1); + + if(vf->ready_stateseekable)return OV_ENOSEEK; + if(milliseconds<0 || milliseconds>time_total)return OV_EINVAL; + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(milliseconds>=time_total)break; + } + + /* enough information to convert time offset to pcm offset */ + { + int ret=_set_link_number(vf,link); + if(ret)return ret; + return + ov_pcm_seek(vf,pcm_total+(milliseconds-time_total)* + vf->vi.rate/1000); + } +} + +/* page-granularity version of ov_time_seek + returns zero on success, nonzero on failure */ +int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t milliseconds){ + /* translate time to PCM position and call ov_pcm_seek */ + + int link=-1; + ogg_int64_t pcm_total=ov_pcm_total(vf,-1); + ogg_int64_t time_total=ov_time_total(vf,-1); + + if(vf->ready_stateseekable)return OV_ENOSEEK; + if(milliseconds<0 || milliseconds>time_total)return OV_EINVAL; + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(milliseconds>=time_total)break; + } + + /* enough information to convert time offset to pcm offset */ + { + int ret=_set_link_number(vf,link); + if(ret)return ret; + return + ov_pcm_seek_page(vf,pcm_total+(milliseconds-time_total)* + vf->vi.rate/1000); + } +} + +/* tell the current stream offset cursor. Note that seek followed by + tell will likely not give the set offset due to caching */ +ogg_int64_t ov_raw_tell(OggVorbis_File *vf){ + if(vf->ready_stateoffset; +} + +/* return PCM offset (sample) of next PCM sample to be read */ +ogg_int64_t ov_pcm_tell(OggVorbis_File *vf){ + if(vf->ready_statepcm_offset; +} + +/* return time offset (milliseconds) of next PCM sample to be read */ +ogg_int64_t ov_time_tell(OggVorbis_File *vf){ + int link=0; + ogg_int64_t pcm_total=0; + ogg_int64_t time_total=0; + + if(vf->ready_stateseekable){ + pcm_total=ov_pcm_total(vf,-1); + time_total=ov_time_total(vf,-1); + + /* which bitstream section does this time offset occur in? */ + for(link=vf->links-1;link>=0;link--){ + pcm_total-=vf->pcmlengths[link*2+1]; + time_total-=ov_time_total(vf,link); + if(vf->pcm_offset>=pcm_total)break; + } + } + + return time_total+(1000*vf->pcm_offset-pcm_total)/vf->vi.rate; +} + +/* link: -1) return the vorbis_info struct for the bitstream section + currently being decoded + 0-n) to request information for a specific bitstream section + + In the case of a non-seekable bitstream, any call returns the + current bitstream. NULL in the case that the machine is not + initialized */ + +vorbis_info *ov_info(OggVorbis_File *vf,int link){ + if(vf->seekable){ + if(link>=vf->links)return NULL; + if(link>=0){ + int ret=_set_link_number_preserve_pos(vf,link); + if(ret)return NULL; + } + } + return &vf->vi; +} + +/* grr, strong typing, grr, no templates/inheritence, grr */ +vorbis_comment *ov_comment(OggVorbis_File *vf,int link){ + if(vf->seekable){ + if(link>=vf->links)return NULL; + if(link>=0){ + int ret=_set_link_number_preserve_pos(vf,link); + if(ret)return NULL; + } + } + return &vf->vc; +} + +/* up to this point, everything could more or less hide the multiple + logical bitstream nature of chaining from the toplevel application + if the toplevel application didn't particularly care. However, at + the point that we actually read audio back, the multiple-section + nature must surface: Multiple bitstream sections do not necessarily + have to have the same number of channels or sampling rate. + + ov_read returns the sequential logical bitstream number currently + being decoded along with the PCM data in order that the toplevel + application can take action on channel/sample rate changes. This + number will be incremented even for streamed (non-seekable) streams + (for seekable streams, it represents the actual logical bitstream + index within the physical bitstream. Note that the accessor + functions above are aware of this dichotomy). + + input values: buffer) a buffer to hold packed PCM data for return + length) the byte length requested to be placed into buffer + + return values: <0) error/hole in data (OV_HOLE), partial open (OV_EINVAL) + 0) EOF + n) number of bytes of PCM actually returned. The + below works on a packet-by-packet basis, so the + return length is not related to the 'length' passed + in, just guaranteed to fit. + + *section) set to the logical bitstream number */ + +long ov_read(OggVorbis_File *vf,void *buffer,int bytes_req,int *bitstream){ + + long samples; + long channels; + + if(vf->ready_stateready_state==INITSET){ + channels=vf->vi.channels; + samples=vorbis_dsp_pcmout(vf->vd,buffer,(bytes_req>>1)/channels); + if(samples){ + if(samples>0){ + vorbis_dsp_read(vf->vd,samples); + vf->pcm_offset+=samples; + if(bitstream)*bitstream=vf->current_link; + return samples*2*channels; + } + return samples; + } + } + + /* suck in another packet */ + { + int ret=_fetch_and_process_packet(vf,1,1); + if(ret==OV_EOF) + return 0; + if(ret<=0) + return ret; + } + + } +} diff --git a/Tremolo/window_lookup.h b/Tremolo/window_lookup.h new file mode 100644 index 0000000..1fd171b --- /dev/null +++ b/Tremolo/window_lookup.h @@ -0,0 +1,2087 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: window lookup tables + + ********************************************************************/ + + +#include "os_types.h" + +static LOOKUP_T vwin64[32] = { + X(0x001f0003), X(0x01168c98), X(0x030333c8), X(0x05dfe3a4), + X(0x09a49562), X(0x0e45df18), X(0x13b47ef2), X(0x19dcf676), + X(0x20a74d83), X(0x27f7137c), X(0x2fabb05a), X(0x37a1105a), + X(0x3fb0ab28), X(0x47b2dcd1), X(0x4f807bc6), X(0x56f48e70), + X(0x5dedfc79), X(0x64511653), X(0x6a08cfff), X(0x6f079328), + X(0x734796f4), X(0x76cab7f2), X(0x7999d6e8), X(0x7bc3cf9f), + X(0x7d5c20c1), X(0x7e7961df), X(0x7f33a567), X(0x7fa2e1d0), + X(0x7fdd78a5), X(0x7ff6ec6d), X(0x7ffed0e9), X(0x7ffffc3f), +}; + +static LOOKUP_T vwin128[64] = { + X(0x0007c04d), X(0x0045bb89), X(0x00c18b87), X(0x017ae294), + X(0x02714a4e), X(0x03a4217a), X(0x05129952), X(0x06bbb24f), + X(0x089e38a1), X(0x0ab8c073), X(0x0d09a228), X(0x0f8ef6bd), + X(0x12469488), X(0x152e0c7a), X(0x1842a81c), X(0x1b81686d), + X(0x1ee705d9), X(0x226ff15d), X(0x26185705), X(0x29dc21cc), + X(0x2db700fe), X(0x31a46f08), X(0x359fb9c1), X(0x39a40c0c), + X(0x3dac78b6), X(0x41b40674), X(0x45b5bcb0), X(0x49acb109), + X(0x4d94152b), X(0x516744bd), X(0x5521d320), X(0x58bf98a5), + X(0x5c3cbef4), X(0x5f95cc5d), X(0x62c7add7), X(0x65cfbf64), + X(0x68abd2ba), X(0x6b5a3405), X(0x6dd9acab), X(0x7029840d), + X(0x72497e38), X(0x7439d8ac), X(0x75fb4532), X(0x778ee30a), + X(0x78f6367e), X(0x7a331f1a), X(0x7b47cccd), X(0x7c36b416), + X(0x7d028192), X(0x7dae0d18), X(0x7e3c4caa), X(0x7eb04763), + X(0x7f0d08a7), X(0x7f5593b7), X(0x7f8cd7d5), X(0x7fb5a513), + X(0x7fd2a1fc), X(0x7fe64212), X(0x7ff2bd4c), X(0x7ffa0890), + X(0x7ffdcf39), X(0x7fff6dac), X(0x7fffed01), X(0x7fffffc4), +}; + +static LOOKUP_T vwin256[128] = { + X(0x0001f018), X(0x00117066), X(0x00306e9e), X(0x005ee5f1), + X(0x009ccf26), X(0x00ea208b), X(0x0146cdea), X(0x01b2c87f), + X(0x022dfedf), X(0x02b85ced), X(0x0351cbbd), X(0x03fa317f), + X(0x04b17167), X(0x05776b90), X(0x064bfcdc), X(0x072efedd), + X(0x082047b4), X(0x091fa9f1), X(0x0a2cf477), X(0x0b47f25d), + X(0x0c706ad2), X(0x0da620ff), X(0x0ee8d3ef), X(0x10383e75), + X(0x11941716), X(0x12fc0ff6), X(0x146fd6c8), X(0x15ef14c2), + X(0x17796e8e), X(0x190e844f), X(0x1aadf196), X(0x1c574d6e), + X(0x1e0a2a62), X(0x1fc61688), X(0x218a9b9c), X(0x23573f12), + X(0x252b823d), X(0x2706e269), X(0x28e8d913), X(0x2ad0dc0e), + X(0x2cbe5dc1), X(0x2eb0cd60), X(0x30a79733), X(0x32a224d5), + X(0x349fdd8b), X(0x36a02690), X(0x38a2636f), X(0x3aa5f65e), + X(0x3caa409e), X(0x3eaea2df), X(0x40b27da6), X(0x42b531b8), + X(0x44b62086), X(0x46b4ac99), X(0x48b03a05), X(0x4aa82ed5), + X(0x4c9bf37d), X(0x4e8af349), X(0x50749ccb), X(0x52586246), + X(0x5435ba1c), X(0x560c1f31), X(0x57db1152), X(0x59a21591), + X(0x5b60b6a3), X(0x5d168535), X(0x5ec31839), X(0x60660d36), + X(0x61ff0886), X(0x638db595), X(0x6511c717), X(0x668af734), + X(0x67f907b0), X(0x695bc207), X(0x6ab2f787), X(0x6bfe815a), + X(0x6d3e4090), X(0x6e721e16), X(0x6f9a0ab5), X(0x70b5fef8), + X(0x71c5fb16), X(0x72ca06cd), X(0x73c2313d), X(0x74ae90b2), + X(0x758f4275), X(0x76646a85), X(0x772e335c), X(0x77eccda0), + X(0x78a06fd7), X(0x79495613), X(0x79e7c19c), X(0x7a7bf894), + X(0x7b064596), X(0x7b86f757), X(0x7bfe6044), X(0x7c6cd615), + X(0x7cd2b16e), X(0x7d304d71), X(0x7d860756), X(0x7dd43e06), + X(0x7e1b51ad), X(0x7e5ba355), X(0x7e95947e), X(0x7ec986bb), + X(0x7ef7db4a), X(0x7f20f2b9), X(0x7f452c7f), X(0x7f64e6a7), + X(0x7f807d71), X(0x7f984aff), X(0x7faca700), X(0x7fbde662), + X(0x7fcc5b04), X(0x7fd85372), X(0x7fe21a99), X(0x7fe9f791), + X(0x7ff02d58), X(0x7ff4fa9e), X(0x7ff89990), X(0x7ffb3faa), + X(0x7ffd1d8b), X(0x7ffe5ecc), X(0x7fff29e0), X(0x7fff9ff3), + X(0x7fffdcd2), X(0x7ffff6d6), X(0x7ffffed0), X(0x7ffffffc), +}; + +static LOOKUP_T vwin512[256] = { + X(0x00007c06), X(0x00045c32), X(0x000c1c62), X(0x0017bc4c), + X(0x00273b7a), X(0x003a9955), X(0x0051d51c), X(0x006cede7), + X(0x008be2a9), X(0x00aeb22a), X(0x00d55b0d), X(0x00ffdbcc), + X(0x012e32b6), X(0x01605df5), X(0x01965b85), X(0x01d02939), + X(0x020dc4ba), X(0x024f2b83), X(0x02945ae6), X(0x02dd5004), + X(0x032a07d3), X(0x037a7f19), X(0x03ceb26e), X(0x04269e37), + X(0x04823eab), X(0x04e18fcc), X(0x05448d6d), X(0x05ab3329), + X(0x06157c68), X(0x0683645e), X(0x06f4e607), X(0x0769fc25), + X(0x07e2a146), X(0x085ecfbc), X(0x08de819f), X(0x0961b0cc), + X(0x09e856e3), X(0x0a726d46), X(0x0affed1d), X(0x0b90cf4c), + X(0x0c250c79), X(0x0cbc9d0b), X(0x0d577926), X(0x0df598aa), + X(0x0e96f337), X(0x0f3b8026), X(0x0fe3368f), X(0x108e0d42), + X(0x113bfaca), X(0x11ecf56b), X(0x12a0f324), X(0x1357e9ac), + X(0x1411ce70), X(0x14ce9698), X(0x158e3702), X(0x1650a444), + X(0x1715d2aa), X(0x17ddb638), X(0x18a842aa), X(0x19756b72), + X(0x1a4523b9), X(0x1b175e62), X(0x1bec0e04), X(0x1cc324f0), + X(0x1d9c9532), X(0x1e78508a), X(0x1f564876), X(0x20366e2e), + X(0x2118b2a2), X(0x21fd0681), X(0x22e35a37), X(0x23cb9dee), + X(0x24b5c18e), X(0x25a1b4c0), X(0x268f66f1), X(0x277ec74e), + X(0x286fc4cc), X(0x29624e23), X(0x2a5651d7), X(0x2b4bbe34), + X(0x2c428150), X(0x2d3a8913), X(0x2e33c332), X(0x2f2e1d35), + X(0x30298478), X(0x3125e62d), X(0x32232f61), X(0x33214cfc), + X(0x34202bc2), X(0x351fb85a), X(0x361fdf4f), X(0x37208d10), + X(0x3821adf7), X(0x39232e49), X(0x3a24fa3c), X(0x3b26fdf6), + X(0x3c292593), X(0x3d2b5d29), X(0x3e2d90c8), X(0x3f2fac7f), + X(0x40319c5f), X(0x41334c81), X(0x4234a905), X(0x43359e16), + X(0x443617f3), X(0x453602eb), X(0x46354b65), X(0x4733dde1), + X(0x4831a6ff), X(0x492e937f), X(0x4a2a9045), X(0x4b258a5f), + X(0x4c1f6f06), X(0x4d182ba2), X(0x4e0fadce), X(0x4f05e35b), + X(0x4ffaba53), X(0x50ee20fd), X(0x51e005e1), X(0x52d057ca), + X(0x53bf05ca), X(0x54abff3b), X(0x559733c7), X(0x56809365), + X(0x57680e62), X(0x584d955d), X(0x59311952), X(0x5a128b96), + X(0x5af1dddd), X(0x5bcf023a), X(0x5ca9eb27), X(0x5d828b81), + X(0x5e58d68d), X(0x5f2cbffc), X(0x5ffe3be9), X(0x60cd3edf), + X(0x6199bdda), X(0x6263ae45), X(0x632b0602), X(0x63efbb66), + X(0x64b1c53f), X(0x65711ad0), X(0x662db3d7), X(0x66e7888d), + X(0x679e91a5), X(0x6852c84e), X(0x69042635), X(0x69b2a582), + X(0x6a5e40dd), X(0x6b06f36c), X(0x6bacb8d2), X(0x6c4f8d30), + X(0x6cef6d26), X(0x6d8c55d4), X(0x6e2644d4), X(0x6ebd3840), + X(0x6f512ead), X(0x6fe2272e), X(0x7070214f), X(0x70fb1d17), + X(0x71831b06), X(0x72081c16), X(0x728a21b5), X(0x73092dc8), + X(0x738542a6), X(0x73fe631b), X(0x74749261), X(0x74e7d421), + X(0x75582c72), X(0x75c59fd5), X(0x76303333), X(0x7697ebdd), + X(0x76fccf85), X(0x775ee443), X(0x77be308a), X(0x781abb2e), + X(0x78748b59), X(0x78cba88e), X(0x79201aa7), X(0x7971e9cd), + X(0x79c11e79), X(0x7a0dc170), X(0x7a57dbc2), X(0x7a9f76c1), + X(0x7ae49c07), X(0x7b27556b), X(0x7b67ad02), X(0x7ba5ad1b), + X(0x7be1603a), X(0x7c1ad118), X(0x7c520a9e), X(0x7c8717e1), + X(0x7cba0421), X(0x7ceadac3), X(0x7d19a74f), X(0x7d46756e), + X(0x7d7150e5), X(0x7d9a4592), X(0x7dc15f69), X(0x7de6aa71), + X(0x7e0a32c0), X(0x7e2c0479), X(0x7e4c2bc7), X(0x7e6ab4db), + X(0x7e87abe9), X(0x7ea31d24), X(0x7ebd14be), X(0x7ed59edd), + X(0x7eecc7a3), X(0x7f029b21), X(0x7f17255a), X(0x7f2a723f), + X(0x7f3c8daa), X(0x7f4d835d), X(0x7f5d5f00), X(0x7f6c2c1b), + X(0x7f79f617), X(0x7f86c83a), X(0x7f92ada2), X(0x7f9db146), + X(0x7fa7ddf3), X(0x7fb13e46), X(0x7fb9dcb0), X(0x7fc1c36c), + X(0x7fc8fc83), X(0x7fcf91c7), X(0x7fd58cd2), X(0x7fdaf702), + X(0x7fdfd979), X(0x7fe43d1c), X(0x7fe82a8b), X(0x7febaa29), + X(0x7feec412), X(0x7ff1801c), X(0x7ff3e5d6), X(0x7ff5fc86), + X(0x7ff7cb29), X(0x7ff9586f), X(0x7ffaaaba), X(0x7ffbc81e), + X(0x7ffcb660), X(0x7ffd7af3), X(0x7ffe1afa), X(0x7ffe9b42), + X(0x7fff0047), X(0x7fff4e2f), X(0x7fff88c9), X(0x7fffb390), + X(0x7fffd1a6), X(0x7fffe5d7), X(0x7ffff296), X(0x7ffff9fd), + X(0x7ffffdcd), X(0x7fffff6d), X(0x7fffffed), X(0x7fffffff), +}; + +static LOOKUP_T vwin1024[512] = { + X(0x00001f02), X(0x0001170e), X(0x00030724), X(0x0005ef40), + X(0x0009cf59), X(0x000ea767), X(0x0014775e), X(0x001b3f2e), + X(0x0022fec8), X(0x002bb618), X(0x00356508), X(0x00400b81), + X(0x004ba968), X(0x00583ea0), X(0x0065cb0a), X(0x00744e84), + X(0x0083c8ea), X(0x00943a14), X(0x00a5a1da), X(0x00b80010), + X(0x00cb5488), X(0x00df9f10), X(0x00f4df76), X(0x010b1584), + X(0x01224101), X(0x013a61b2), X(0x01537759), X(0x016d81b6), + X(0x01888087), X(0x01a47385), X(0x01c15a69), X(0x01df34e6), + X(0x01fe02b1), X(0x021dc377), X(0x023e76e7), X(0x02601ca9), + X(0x0282b466), X(0x02a63dc1), X(0x02cab85d), X(0x02f023d6), + X(0x03167fcb), X(0x033dcbd3), X(0x03660783), X(0x038f3270), + X(0x03b94c29), X(0x03e4543a), X(0x04104a2e), X(0x043d2d8b), + X(0x046afdd5), X(0x0499ba8c), X(0x04c9632d), X(0x04f9f734), + X(0x052b7615), X(0x055ddf46), X(0x05913237), X(0x05c56e53), + X(0x05fa9306), X(0x06309fb6), X(0x066793c5), X(0x069f6e93), + X(0x06d82f7c), X(0x0711d5d9), X(0x074c60fe), X(0x0787d03d), + X(0x07c422e4), X(0x0801583e), X(0x083f6f91), X(0x087e681f), + X(0x08be4129), X(0x08fef9ea), X(0x0940919a), X(0x0983076d), + X(0x09c65a92), X(0x0a0a8a38), X(0x0a4f9585), X(0x0a957b9f), + X(0x0adc3ba7), X(0x0b23d4b9), X(0x0b6c45ee), X(0x0bb58e5a), + X(0x0bffad0f), X(0x0c4aa11a), X(0x0c966982), X(0x0ce3054d), + X(0x0d30737b), X(0x0d7eb308), X(0x0dcdc2eb), X(0x0e1da21a), + X(0x0e6e4f83), X(0x0ebfca11), X(0x0f1210ad), X(0x0f652238), + X(0x0fb8fd91), X(0x100da192), X(0x10630d11), X(0x10b93ee0), + X(0x111035cb), X(0x1167f09a), X(0x11c06e13), X(0x1219acf5), + X(0x1273abfb), X(0x12ce69db), X(0x1329e54a), X(0x13861cf3), + X(0x13e30f80), X(0x1440bb97), X(0x149f1fd8), X(0x14fe3ade), + X(0x155e0b40), X(0x15be8f92), X(0x161fc662), X(0x1681ae38), + X(0x16e4459b), X(0x17478b0b), X(0x17ab7d03), X(0x181019fb), + X(0x18756067), X(0x18db4eb3), X(0x1941e34a), X(0x19a91c92), + X(0x1a10f8ea), X(0x1a7976af), X(0x1ae29439), X(0x1b4c4fda), + X(0x1bb6a7e2), X(0x1c219a9a), X(0x1c8d2649), X(0x1cf9492e), + X(0x1d660188), X(0x1dd34d8e), X(0x1e412b74), X(0x1eaf996a), + X(0x1f1e959b), X(0x1f8e1e2f), X(0x1ffe3146), X(0x206ecd01), + X(0x20dfef78), X(0x215196c2), X(0x21c3c0f0), X(0x22366c10), + X(0x22a9962a), X(0x231d3d45), X(0x23915f60), X(0x2405fa7a), + X(0x247b0c8c), X(0x24f09389), X(0x25668d65), X(0x25dcf80c), + X(0x2653d167), X(0x26cb175e), X(0x2742c7d0), X(0x27bae09e), + X(0x28335fa2), X(0x28ac42b3), X(0x292587a5), X(0x299f2c48), + X(0x2a192e69), X(0x2a938bd1), X(0x2b0e4247), X(0x2b894f8d), + X(0x2c04b164), X(0x2c806588), X(0x2cfc69b2), X(0x2d78bb9a), + X(0x2df558f4), X(0x2e723f6f), X(0x2eef6cbb), X(0x2f6cde83), + X(0x2fea9270), X(0x30688627), X(0x30e6b74e), X(0x31652385), + X(0x31e3c86b), X(0x3262a39e), X(0x32e1b2b8), X(0x3360f352), + X(0x33e06303), X(0x345fff5e), X(0x34dfc5f8), X(0x355fb462), + X(0x35dfc82a), X(0x365ffee0), X(0x36e0560f), X(0x3760cb43), + X(0x37e15c05), X(0x386205df), X(0x38e2c657), X(0x39639af5), + X(0x39e4813e), X(0x3a6576b6), X(0x3ae678e3), X(0x3b678547), + X(0x3be89965), X(0x3c69b2c1), X(0x3ceacedc), X(0x3d6beb37), + X(0x3ded0557), X(0x3e6e1abb), X(0x3eef28e6), X(0x3f702d5a), + X(0x3ff1259a), X(0x40720f29), X(0x40f2e789), X(0x4173ac3f), + X(0x41f45ad0), X(0x4274f0c2), X(0x42f56b9a), X(0x4375c8e0), + X(0x43f6061d), X(0x447620db), X(0x44f616a5), X(0x4575e509), + X(0x45f58994), X(0x467501d6), X(0x46f44b62), X(0x477363cb), + X(0x47f248a6), X(0x4870f78e), X(0x48ef6e1a), X(0x496da9e8), + X(0x49eba897), X(0x4a6967c8), X(0x4ae6e521), X(0x4b641e47), + X(0x4be110e5), X(0x4c5dbaa7), X(0x4cda193f), X(0x4d562a5f), + X(0x4dd1ebbd), X(0x4e4d5b15), X(0x4ec87623), X(0x4f433aa9), + X(0x4fbda66c), X(0x5037b734), X(0x50b16acf), X(0x512abf0e), + X(0x51a3b1c5), X(0x521c40ce), X(0x52946a06), X(0x530c2b50), + X(0x53838292), X(0x53fa6db8), X(0x5470eab3), X(0x54e6f776), + X(0x555c91fc), X(0x55d1b844), X(0x56466851), X(0x56baa02f), + X(0x572e5deb), X(0x57a19f98), X(0x58146352), X(0x5886a737), + X(0x58f8696d), X(0x5969a81c), X(0x59da6177), X(0x5a4a93b4), + X(0x5aba3d0f), X(0x5b295bcb), X(0x5b97ee30), X(0x5c05f28d), + X(0x5c736738), X(0x5ce04a8d), X(0x5d4c9aed), X(0x5db856c1), + X(0x5e237c78), X(0x5e8e0a89), X(0x5ef7ff6f), X(0x5f6159b0), + X(0x5fca17d4), X(0x6032386e), X(0x6099ba15), X(0x61009b69), + X(0x6166db11), X(0x61cc77b9), X(0x62317017), X(0x6295c2e7), + X(0x62f96eec), X(0x635c72f1), X(0x63becdc8), X(0x64207e4b), + X(0x6481835a), X(0x64e1dbde), X(0x654186c8), X(0x65a0830e), + X(0x65fecfb1), X(0x665c6bb7), X(0x66b95630), X(0x67158e30), + X(0x677112d7), X(0x67cbe34b), X(0x6825feb9), X(0x687f6456), + X(0x68d81361), X(0x69300b1e), X(0x69874ada), X(0x69ddd1ea), + X(0x6a339fab), X(0x6a88b382), X(0x6add0cdb), X(0x6b30ab2a), + X(0x6b838dec), X(0x6bd5b4a6), X(0x6c271ee2), X(0x6c77cc36), + X(0x6cc7bc3d), X(0x6d16ee9b), X(0x6d6562fb), X(0x6db31911), + X(0x6e001099), X(0x6e4c4955), X(0x6e97c311), X(0x6ee27d9f), + X(0x6f2c78d9), X(0x6f75b4a2), X(0x6fbe30e4), X(0x7005ed91), + X(0x704ceaa1), X(0x70932816), X(0x70d8a5f8), X(0x711d6457), + X(0x7161634b), X(0x71a4a2f3), X(0x71e72375), X(0x7228e500), + X(0x7269e7c8), X(0x72aa2c0a), X(0x72e9b209), X(0x73287a12), + X(0x73668476), X(0x73a3d18f), X(0x73e061bc), X(0x741c3566), + X(0x74574cfa), X(0x7491a8ee), X(0x74cb49be), X(0x75042fec), + X(0x753c5c03), X(0x7573ce92), X(0x75aa882f), X(0x75e08979), + X(0x7615d313), X(0x764a65a7), X(0x767e41e5), X(0x76b16884), + X(0x76e3da40), X(0x771597dc), X(0x7746a221), X(0x7776f9dd), + X(0x77a69fe6), X(0x77d59514), X(0x7803da49), X(0x7831706a), + X(0x785e5861), X(0x788a9320), X(0x78b6219c), X(0x78e104cf), + X(0x790b3dbb), X(0x7934cd64), X(0x795db4d5), X(0x7985f51d), + X(0x79ad8f50), X(0x79d48486), X(0x79fad5de), X(0x7a208478), + X(0x7a45917b), X(0x7a69fe12), X(0x7a8dcb6c), X(0x7ab0fabb), + X(0x7ad38d36), X(0x7af5841a), X(0x7b16e0a3), X(0x7b37a416), + X(0x7b57cfb8), X(0x7b7764d4), X(0x7b9664b6), X(0x7bb4d0b0), + X(0x7bd2aa14), X(0x7beff23b), X(0x7c0caa7f), X(0x7c28d43c), + X(0x7c4470d2), X(0x7c5f81a5), X(0x7c7a081a), X(0x7c940598), + X(0x7cad7b8b), X(0x7cc66b5e), X(0x7cded680), X(0x7cf6be64), + X(0x7d0e247b), X(0x7d250a3c), X(0x7d3b711c), X(0x7d515a95), + X(0x7d66c822), X(0x7d7bbb3c), X(0x7d903563), X(0x7da43814), + X(0x7db7c4d0), X(0x7dcadd16), X(0x7ddd826a), X(0x7defb64d), + X(0x7e017a44), X(0x7e12cfd3), X(0x7e23b87f), X(0x7e3435cc), + X(0x7e444943), X(0x7e53f467), X(0x7e6338c0), X(0x7e7217d5), + X(0x7e80932b), X(0x7e8eac49), X(0x7e9c64b7), X(0x7ea9bdf8), + X(0x7eb6b994), X(0x7ec35910), X(0x7ecf9def), X(0x7edb89b6), + X(0x7ee71de9), X(0x7ef25c09), X(0x7efd4598), X(0x7f07dc16), + X(0x7f122103), X(0x7f1c15dc), X(0x7f25bc1f), X(0x7f2f1547), + X(0x7f3822cd), X(0x7f40e62b), X(0x7f4960d6), X(0x7f519443), + X(0x7f5981e7), X(0x7f612b31), X(0x7f689191), X(0x7f6fb674), + X(0x7f769b45), X(0x7f7d416c), X(0x7f83aa51), X(0x7f89d757), + X(0x7f8fc9df), X(0x7f958348), X(0x7f9b04ef), X(0x7fa0502e), + X(0x7fa56659), X(0x7faa48c7), X(0x7faef8c7), X(0x7fb377a7), + X(0x7fb7c6b3), X(0x7fbbe732), X(0x7fbfda67), X(0x7fc3a196), + X(0x7fc73dfa), X(0x7fcab0ce), X(0x7fcdfb4a), X(0x7fd11ea0), + X(0x7fd41c00), X(0x7fd6f496), X(0x7fd9a989), X(0x7fdc3bff), + X(0x7fdead17), X(0x7fe0fdee), X(0x7fe32f9d), X(0x7fe54337), + X(0x7fe739ce), X(0x7fe9146c), X(0x7fead41b), X(0x7fec79dd), + X(0x7fee06b2), X(0x7fef7b94), X(0x7ff0d97b), X(0x7ff22158), + X(0x7ff35417), X(0x7ff472a3), X(0x7ff57de0), X(0x7ff676ac), + X(0x7ff75de3), X(0x7ff8345a), X(0x7ff8fae4), X(0x7ff9b24b), + X(0x7ffa5b58), X(0x7ffaf6cd), X(0x7ffb8568), X(0x7ffc07e2), + X(0x7ffc7eed), X(0x7ffceb38), X(0x7ffd4d6d), X(0x7ffda631), + X(0x7ffdf621), X(0x7ffe3dd8), X(0x7ffe7dea), X(0x7ffeb6e7), + X(0x7ffee959), X(0x7fff15c4), X(0x7fff3ca9), X(0x7fff5e80), + X(0x7fff7bc0), X(0x7fff94d6), X(0x7fffaa2d), X(0x7fffbc29), + X(0x7fffcb29), X(0x7fffd786), X(0x7fffe195), X(0x7fffe9a3), + X(0x7fffeffa), X(0x7ffff4dd), X(0x7ffff889), X(0x7ffffb37), + X(0x7ffffd1a), X(0x7ffffe5d), X(0x7fffff29), X(0x7fffffa0), + X(0x7fffffdd), X(0x7ffffff7), X(0x7fffffff), X(0x7fffffff), +}; + +static LOOKUP_T vwin2048[1024] = { + X(0x000007c0), X(0x000045c4), X(0x0000c1ca), X(0x00017bd3), + X(0x000273de), X(0x0003a9eb), X(0x00051df9), X(0x0006d007), + X(0x0008c014), X(0x000aee1e), X(0x000d5a25), X(0x00100428), + X(0x0012ec23), X(0x00161216), X(0x001975fe), X(0x001d17da), + X(0x0020f7a8), X(0x00251564), X(0x0029710c), X(0x002e0a9e), + X(0x0032e217), X(0x0037f773), X(0x003d4ab0), X(0x0042dbca), + X(0x0048aabe), X(0x004eb788), X(0x00550224), X(0x005b8a8f), + X(0x006250c5), X(0x006954c1), X(0x0070967e), X(0x007815f9), + X(0x007fd32c), X(0x0087ce13), X(0x009006a9), X(0x00987ce9), + X(0x00a130cc), X(0x00aa224f), X(0x00b3516b), X(0x00bcbe1a), + X(0x00c66856), X(0x00d0501a), X(0x00da755f), X(0x00e4d81f), + X(0x00ef7853), X(0x00fa55f4), X(0x010570fc), X(0x0110c963), + X(0x011c5f22), X(0x01283232), X(0x0134428c), X(0x01409027), + X(0x014d1afb), X(0x0159e302), X(0x0166e831), X(0x01742a82), + X(0x0181a9ec), X(0x018f6665), X(0x019d5fe5), X(0x01ab9663), + X(0x01ba09d6), X(0x01c8ba34), X(0x01d7a775), X(0x01e6d18d), + X(0x01f63873), X(0x0205dc1e), X(0x0215bc82), X(0x0225d997), + X(0x02363350), X(0x0246c9a3), X(0x02579c86), X(0x0268abed), + X(0x0279f7cc), X(0x028b801a), X(0x029d44c9), X(0x02af45ce), + X(0x02c1831d), X(0x02d3fcaa), X(0x02e6b269), X(0x02f9a44c), + X(0x030cd248), X(0x03203c4f), X(0x0333e255), X(0x0347c44b), + X(0x035be225), X(0x03703bd5), X(0x0384d14d), X(0x0399a280), + X(0x03aeaf5e), X(0x03c3f7d9), X(0x03d97be4), X(0x03ef3b6e), + X(0x0405366a), X(0x041b6cc8), X(0x0431de78), X(0x04488b6c), + X(0x045f7393), X(0x047696dd), X(0x048df53b), X(0x04a58e9b), + X(0x04bd62ee), X(0x04d57223), X(0x04edbc28), X(0x050640ed), + X(0x051f0060), X(0x0537fa70), X(0x05512f0a), X(0x056a9e1e), + X(0x05844798), X(0x059e2b67), X(0x05b84978), X(0x05d2a1b8), + X(0x05ed3414), X(0x06080079), X(0x062306d3), X(0x063e470f), + X(0x0659c119), X(0x067574dd), X(0x06916247), X(0x06ad8941), + X(0x06c9e9b8), X(0x06e68397), X(0x070356c8), X(0x07206336), + X(0x073da8cb), X(0x075b2772), X(0x0778df15), X(0x0796cf9c), + X(0x07b4f8f3), X(0x07d35b01), X(0x07f1f5b1), X(0x0810c8eb), + X(0x082fd497), X(0x084f189e), X(0x086e94e9), X(0x088e495e), + X(0x08ae35e6), X(0x08ce5a68), X(0x08eeb6cc), X(0x090f4af8), + X(0x093016d3), X(0x09511a44), X(0x09725530), X(0x0993c77f), + X(0x09b57115), X(0x09d751d8), X(0x09f969ae), X(0x0a1bb87c), + X(0x0a3e3e26), X(0x0a60fa91), X(0x0a83eda2), X(0x0aa7173c), + X(0x0aca7743), X(0x0aee0d9b), X(0x0b11da28), X(0x0b35dccc), + X(0x0b5a156a), X(0x0b7e83e5), X(0x0ba3281f), X(0x0bc801fa), + X(0x0bed1159), X(0x0c12561c), X(0x0c37d025), X(0x0c5d7f55), + X(0x0c83638d), X(0x0ca97cae), X(0x0ccfca97), X(0x0cf64d2a), + X(0x0d1d0444), X(0x0d43efc7), X(0x0d6b0f92), X(0x0d926383), + X(0x0db9eb79), X(0x0de1a752), X(0x0e0996ee), X(0x0e31ba29), + X(0x0e5a10e2), X(0x0e829af6), X(0x0eab5841), X(0x0ed448a2), + X(0x0efd6bf4), X(0x0f26c214), X(0x0f504ade), X(0x0f7a062e), + X(0x0fa3f3df), X(0x0fce13cd), X(0x0ff865d2), X(0x1022e9ca), + X(0x104d9f8e), X(0x107886f9), X(0x10a39fe5), X(0x10ceea2c), + X(0x10fa65a6), X(0x1126122d), X(0x1151ef9a), X(0x117dfdc5), + X(0x11aa3c87), X(0x11d6abb6), X(0x12034b2c), X(0x12301ac0), + X(0x125d1a48), X(0x128a499b), X(0x12b7a891), X(0x12e536ff), + X(0x1312f4bb), X(0x1340e19c), X(0x136efd75), X(0x139d481e), + X(0x13cbc16a), X(0x13fa692f), X(0x14293f40), X(0x14584371), + X(0x14877597), X(0x14b6d585), X(0x14e6630d), X(0x15161e04), + X(0x1546063b), X(0x15761b85), X(0x15a65db3), X(0x15d6cc99), + X(0x16076806), X(0x16382fcd), X(0x166923bf), X(0x169a43ab), + X(0x16cb8f62), X(0x16fd06b5), X(0x172ea973), X(0x1760776b), + X(0x1792706e), X(0x17c49449), X(0x17f6e2cb), X(0x18295bc3), + X(0x185bfeff), X(0x188ecc4c), X(0x18c1c379), X(0x18f4e452), + X(0x19282ea4), X(0x195ba23c), X(0x198f3ee6), X(0x19c3046e), + X(0x19f6f2a1), X(0x1a2b094a), X(0x1a5f4833), X(0x1a93af28), + X(0x1ac83df3), X(0x1afcf460), X(0x1b31d237), X(0x1b66d744), + X(0x1b9c034e), 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X(0x7fffffe6), X(0x7ffffff3), X(0x7ffffffa), + X(0x7ffffffe), X(0x7fffffff), X(0x7fffffff), X(0x7fffffff), +}; + +static LOOKUP_T vwin4096[2048] = { + X(0x000001f0), X(0x00001171), X(0x00003072), X(0x00005ef5), + X(0x00009cf8), X(0x0000ea7c), X(0x00014780), X(0x0001b405), + X(0x0002300b), X(0x0002bb91), X(0x00035698), X(0x0004011e), + X(0x0004bb25), X(0x000584ac), X(0x00065db3), X(0x0007463a), + X(0x00083e41), X(0x000945c7), X(0x000a5ccc), X(0x000b8350), + X(0x000cb954), X(0x000dfed7), X(0x000f53d8), X(0x0010b857), + X(0x00122c55), X(0x0013afd1), X(0x001542ca), X(0x0016e541), + X(0x00189735), X(0x001a58a7), X(0x001c2995), X(0x001e09ff), + X(0x001ff9e6), X(0x0021f948), X(0x00240826), X(0x00262680), + X(0x00285454), X(0x002a91a3), X(0x002cde6c), X(0x002f3aaf), + X(0x0031a66b), X(0x003421a0), X(0x0036ac4f), X(0x00394675), + X(0x003bf014), X(0x003ea92a), X(0x004171b7), X(0x004449bb), + X(0x00473135), X(0x004a2824), X(0x004d2e8a), X(0x00504463), + X(0x005369b2), X(0x00569e74), X(0x0059e2aa), X(0x005d3652), + X(0x0060996d), X(0x00640bf9), X(0x00678df7), X(0x006b1f66), + X(0x006ec045), X(0x00727093), X(0x00763051), X(0x0079ff7d), + X(0x007dde16), X(0x0081cc1d), X(0x0085c991), X(0x0089d671), + X(0x008df2bc), X(0x00921e71), X(0x00965991), X(0x009aa41a), + X(0x009efe0c), X(0x00a36766), X(0x00a7e028), X(0x00ac6850), + X(0x00b0ffde), X(0x00b5a6d1), X(0x00ba5d28), X(0x00bf22e4), + X(0x00c3f802), X(0x00c8dc83), X(0x00cdd065), X(0x00d2d3a8), + X(0x00d7e64a), X(0x00dd084c), X(0x00e239ac), X(0x00e77a69), + X(0x00ecca83), X(0x00f229f9), X(0x00f798ca), X(0x00fd16f5), + X(0x0102a479), X(0x01084155), X(0x010ded89), X(0x0113a913), + X(0x011973f3), X(0x011f4e27), X(0x012537af), X(0x012b308a), + X(0x013138b7), X(0x01375035), X(0x013d7702), X(0x0143ad1f), + X(0x0149f289), X(0x01504741), X(0x0156ab44), X(0x015d1e92), + X(0x0163a12a), X(0x016a330b), X(0x0170d433), X(0x017784a3), + X(0x017e4458), X(0x01851351), X(0x018bf18e), X(0x0192df0d), + X(0x0199dbcd), X(0x01a0e7cd), X(0x01a8030c), X(0x01af2d89), + X(0x01b66743), X(0x01bdb038), X(0x01c50867), X(0x01cc6fd0), + X(0x01d3e670), X(0x01db6c47), X(0x01e30153), X(0x01eaa593), + X(0x01f25907), X(0x01fa1bac), X(0x0201ed81), X(0x0209ce86), + X(0x0211beb8), X(0x0219be17), X(0x0221cca2), X(0x0229ea56), + X(0x02321733), X(0x023a5337), X(0x02429e60), X(0x024af8af), + X(0x02536220), X(0x025bdab3), X(0x02646267), X(0x026cf93a), + X(0x02759f2a), X(0x027e5436), X(0x0287185d), X(0x028feb9d), + X(0x0298cdf4), X(0x02a1bf62), X(0x02aabfe5), X(0x02b3cf7b), + X(0x02bcee23), X(0x02c61bdb), X(0x02cf58a2), X(0x02d8a475), + X(0x02e1ff55), X(0x02eb693e), X(0x02f4e230), X(0x02fe6a29), + X(0x03080127), X(0x0311a729), X(0x031b5c2d), X(0x03252031), + X(0x032ef334), X(0x0338d534), X(0x0342c630), X(0x034cc625), + X(0x0356d512), X(0x0360f2f6), X(0x036b1fce), X(0x03755b99), + X(0x037fa655), X(0x038a0001), X(0x0394689a), X(0x039ee020), + X(0x03a9668f), X(0x03b3fbe6), X(0x03bea024), X(0x03c95347), + X(0x03d4154d), X(0x03dee633), X(0x03e9c5f9), X(0x03f4b49b), + X(0x03ffb219), X(0x040abe71), X(0x0415d9a0), X(0x042103a5), + X(0x042c3c7d), X(0x04378428), X(0x0442daa2), X(0x044e3fea), + X(0x0459b3fd), X(0x046536db), X(0x0470c880), X(0x047c68eb), + X(0x0488181a), X(0x0493d60b), X(0x049fa2bc), X(0x04ab7e2a), + X(0x04b76854), X(0x04c36137), X(0x04cf68d1), X(0x04db7f21), + X(0x04e7a424), X(0x04f3d7d8), X(0x05001a3b), X(0x050c6b4a), + X(0x0518cb04), X(0x05253966), X(0x0531b66e), X(0x053e421a), + X(0x054adc68), X(0x05578555), X(0x05643cdf), X(0x05710304), + X(0x057dd7c1), X(0x058abb15), X(0x0597acfd), X(0x05a4ad76), + X(0x05b1bc7f), X(0x05beda14), X(0x05cc0635), X(0x05d940dd), + X(0x05e68a0b), X(0x05f3e1bd), X(0x060147f0), X(0x060ebca1), + X(0x061c3fcf), X(0x0629d176), X(0x06377194), X(0x06452027), + X(0x0652dd2c), X(0x0660a8a2), X(0x066e8284), X(0x067c6ad1), + X(0x068a6186), X(0x069866a1), X(0x06a67a1e), X(0x06b49bfc), + X(0x06c2cc38), X(0x06d10acf), X(0x06df57bf), X(0x06edb304), + X(0x06fc1c9d), X(0x070a9487), X(0x07191abe), X(0x0727af40), + X(0x0736520b), X(0x0745031c), X(0x0753c270), X(0x07629004), + X(0x07716bd6), X(0x078055e2), X(0x078f4e26), X(0x079e549f), + X(0x07ad694b), X(0x07bc8c26), X(0x07cbbd2e), X(0x07dafc5f), + X(0x07ea49b7), X(0x07f9a533), X(0x08090ed1), X(0x0818868c), + X(0x08280c62), X(0x0837a051), X(0x08474255), X(0x0856f26b), + X(0x0866b091), X(0x08767cc3), X(0x088656fe), X(0x08963f3f), + X(0x08a63584), X(0x08b639c8), X(0x08c64c0a), X(0x08d66c45), + X(0x08e69a77), X(0x08f6d69d), X(0x090720b3), X(0x091778b7), + X(0x0927dea5), X(0x0938527a), X(0x0948d433), X(0x095963cc), + X(0x096a0143), X(0x097aac94), X(0x098b65bb), X(0x099c2cb6), + X(0x09ad0182), X(0x09bde41a), X(0x09ced47d), X(0x09dfd2a5), + X(0x09f0de90), X(0x0a01f83b), X(0x0a131fa3), X(0x0a2454c3), + X(0x0a359798), X(0x0a46e820), X(0x0a584656), X(0x0a69b237), + X(0x0a7b2bc0), X(0x0a8cb2ec), X(0x0a9e47ba), X(0x0aafea24), + X(0x0ac19a29), X(0x0ad357c3), X(0x0ae522ef), X(0x0af6fbab), + X(0x0b08e1f1), X(0x0b1ad5c0), X(0x0b2cd712), X(0x0b3ee5e5), + X(0x0b510234), X(0x0b632bfd), X(0x0b75633b), X(0x0b87a7eb), + X(0x0b99fa08), X(0x0bac5990), X(0x0bbec67e), X(0x0bd140cf), + X(0x0be3c87e), X(0x0bf65d89), X(0x0c08ffeb), X(0x0c1bafa1), + X(0x0c2e6ca6), X(0x0c4136f6), X(0x0c540e8f), X(0x0c66f36c), + X(0x0c79e588), X(0x0c8ce4e1), X(0x0c9ff172), X(0x0cb30b37), + X(0x0cc6322c), X(0x0cd9664d), X(0x0ceca797), X(0x0cfff605), + X(0x0d135193), X(0x0d26ba3d), X(0x0d3a2fff), X(0x0d4db2d5), + X(0x0d6142ba), X(0x0d74dfac), X(0x0d8889a5), X(0x0d9c40a1), + X(0x0db0049d), X(0x0dc3d593), X(0x0dd7b380), X(0x0deb9e60), + X(0x0dff962f), X(0x0e139ae7), X(0x0e27ac85), X(0x0e3bcb05), + X(0x0e4ff662), X(0x0e642e98), X(0x0e7873a2), X(0x0e8cc57d), + X(0x0ea12423), X(0x0eb58f91), X(0x0eca07c2), X(0x0ede8cb1), + X(0x0ef31e5b), X(0x0f07bcba), X(0x0f1c67cb), X(0x0f311f88), + X(0x0f45e3ee), X(0x0f5ab4f7), X(0x0f6f92a0), X(0x0f847ce3), + X(0x0f9973bc), X(0x0fae7726), X(0x0fc3871e), X(0x0fd8a39d), + X(0x0fedcca1), X(0x10030223), X(0x1018441f), X(0x102d9291), + X(0x1042ed74), X(0x105854c3), X(0x106dc879), X(0x10834892), + X(0x1098d508), X(0x10ae6dd8), X(0x10c412fc), X(0x10d9c46f), + X(0x10ef822d), X(0x11054c30), X(0x111b2274), X(0x113104f5), + X(0x1146f3ac), X(0x115cee95), X(0x1172f5ab), X(0x118908e9), + X(0x119f284a), X(0x11b553ca), X(0x11cb8b62), X(0x11e1cf0f), + X(0x11f81ecb), X(0x120e7a90), X(0x1224e25a), X(0x123b5624), + X(0x1251d5e9), X(0x126861a3), X(0x127ef94e), X(0x12959ce3), + X(0x12ac4c5f), X(0x12c307bb), X(0x12d9cef2), X(0x12f0a200), + X(0x130780df), X(0x131e6b8a), X(0x133561fa), X(0x134c642c), + X(0x1363721a), X(0x137a8bbe), X(0x1391b113), X(0x13a8e214), + X(0x13c01eba), X(0x13d76702), X(0x13eebae5), X(0x14061a5e), + X(0x141d8567), X(0x1434fbfb), X(0x144c7e14), X(0x14640bae), + X(0x147ba4c1), X(0x14934949), X(0x14aaf941), X(0x14c2b4a2), + X(0x14da7b67), X(0x14f24d8a), X(0x150a2b06), X(0x152213d5), + X(0x153a07f1), X(0x15520755), X(0x156a11fb), X(0x158227dd), + X(0x159a48f5), X(0x15b2753d), X(0x15caacb1), X(0x15e2ef49), + X(0x15fb3d01), X(0x161395d2), X(0x162bf9b6), X(0x164468a8), + X(0x165ce2a1), X(0x1675679c), X(0x168df793), X(0x16a69280), + X(0x16bf385c), X(0x16d7e922), X(0x16f0a4cc), X(0x17096b54), + X(0x17223cb4), X(0x173b18e5), X(0x1753ffe2), X(0x176cf1a5), + X(0x1785ee27), X(0x179ef562), X(0x17b80750), X(0x17d123eb), + X(0x17ea4b2d), X(0x18037d10), X(0x181cb98d), X(0x1836009e), + X(0x184f523c), X(0x1868ae63), X(0x1882150a), X(0x189b862c), + X(0x18b501c4), X(0x18ce87c9), X(0x18e81836), X(0x1901b305), + X(0x191b582f), X(0x193507ad), X(0x194ec17a), X(0x1968858f), + X(0x198253e5), X(0x199c2c75), X(0x19b60f3a), X(0x19cffc2d), + X(0x19e9f347), X(0x1a03f482), X(0x1a1dffd7), X(0x1a381540), + X(0x1a5234b5), X(0x1a6c5e31), X(0x1a8691ac), X(0x1aa0cf21), + X(0x1abb1687), X(0x1ad567da), X(0x1aefc311), X(0x1b0a2826), + X(0x1b249712), X(0x1b3f0fd0), X(0x1b599257), X(0x1b741ea1), + X(0x1b8eb4a7), X(0x1ba95462), X(0x1bc3fdcd), X(0x1bdeb0de), + X(0x1bf96d91), X(0x1c1433dd), 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X(0x7ffb0951), X(0x7ffb2dbf), + X(0x7ffb5164), X(0x7ffb7442), X(0x7ffb965d), X(0x7ffbb7b8), + X(0x7ffbd854), X(0x7ffbf836), X(0x7ffc175f), X(0x7ffc35d3), + X(0x7ffc5394), X(0x7ffc70a5), X(0x7ffc8d09), X(0x7ffca8c2), + X(0x7ffcc3d4), X(0x7ffcde3f), X(0x7ffcf809), X(0x7ffd1132), + X(0x7ffd29be), X(0x7ffd41ae), X(0x7ffd5907), X(0x7ffd6fc9), + X(0x7ffd85f9), X(0x7ffd9b97), X(0x7ffdb0a7), X(0x7ffdc52b), + X(0x7ffdd926), X(0x7ffdec99), X(0x7ffdff88), X(0x7ffe11f4), + X(0x7ffe23e0), X(0x7ffe354f), X(0x7ffe4642), X(0x7ffe56bc), + X(0x7ffe66bf), X(0x7ffe764e), X(0x7ffe856a), X(0x7ffe9416), + X(0x7ffea254), X(0x7ffeb026), X(0x7ffebd8e), X(0x7ffeca8f), + X(0x7ffed72a), X(0x7ffee362), X(0x7ffeef38), X(0x7ffefaaf), + X(0x7fff05c9), X(0x7fff1087), X(0x7fff1aec), X(0x7fff24f9), + X(0x7fff2eb1), X(0x7fff3816), X(0x7fff4128), X(0x7fff49eb), + X(0x7fff5260), X(0x7fff5a88), X(0x7fff6266), X(0x7fff69fc), + X(0x7fff714b), X(0x7fff7854), X(0x7fff7f1a), X(0x7fff859f), + X(0x7fff8be3), X(0x7fff91ea), X(0x7fff97b3), X(0x7fff9d41), + X(0x7fffa296), X(0x7fffa7b3), X(0x7fffac99), X(0x7fffb14b), + X(0x7fffb5c9), X(0x7fffba15), X(0x7fffbe31), X(0x7fffc21d), + X(0x7fffc5dc), X(0x7fffc96f), X(0x7fffccd8), X(0x7fffd016), + X(0x7fffd32d), X(0x7fffd61c), X(0x7fffd8e7), X(0x7fffdb8d), + X(0x7fffde0f), X(0x7fffe071), X(0x7fffe2b1), X(0x7fffe4d2), + X(0x7fffe6d5), X(0x7fffe8bb), X(0x7fffea85), X(0x7fffec34), + X(0x7fffedc9), X(0x7fffef45), X(0x7ffff0aa), X(0x7ffff1f7), + X(0x7ffff330), X(0x7ffff453), X(0x7ffff562), X(0x7ffff65f), + X(0x7ffff749), X(0x7ffff823), X(0x7ffff8ec), X(0x7ffff9a6), + X(0x7ffffa51), X(0x7ffffaee), X(0x7ffffb7e), X(0x7ffffc02), + X(0x7ffffc7a), X(0x7ffffce7), X(0x7ffffd4a), X(0x7ffffda3), + X(0x7ffffdf4), X(0x7ffffe3c), X(0x7ffffe7c), X(0x7ffffeb6), + X(0x7ffffee8), X(0x7fffff15), X(0x7fffff3c), X(0x7fffff5e), + X(0x7fffff7b), X(0x7fffff95), X(0x7fffffaa), X(0x7fffffbc), + X(0x7fffffcb), X(0x7fffffd7), X(0x7fffffe2), X(0x7fffffea), + X(0x7ffffff0), X(0x7ffffff5), X(0x7ffffff9), X(0x7ffffffb), + X(0x7ffffffd), X(0x7ffffffe), X(0x7fffffff), X(0x7fffffff), + X(0x7fffffff), X(0x7fffffff), X(0x7fffffff), X(0x7fffffff), +}; + +#ifndef LIMIT_TO_64kHz + +static LOOKUP_T vwin8192[4096] = { + X(0x0000007c), X(0x0000045c), X(0x00000c1d), X(0x000017bd), + X(0x0000273e), X(0x00003a9f), X(0x000051e0), X(0x00006d02), + X(0x00008c03), X(0x0000aee5), X(0x0000d5a7), X(0x00010049), + X(0x00012ecb), X(0x0001612d), X(0x00019770), X(0x0001d193), + X(0x00020f96), X(0x00025178), X(0x0002973c), X(0x0002e0df), + X(0x00032e62), X(0x00037fc5), X(0x0003d509), X(0x00042e2c), + X(0x00048b30), X(0x0004ec13), X(0x000550d7), X(0x0005b97a), + X(0x000625fe), X(0x00069661), X(0x00070aa4), X(0x000782c8), + X(0x0007fecb), X(0x00087eae), X(0x00090271), X(0x00098a14), + X(0x000a1597), X(0x000aa4f9), X(0x000b383b), X(0x000bcf5d), + X(0x000c6a5f), X(0x000d0941), X(0x000dac02), X(0x000e52a3), + X(0x000efd23), X(0x000fab84), X(0x00105dc3), X(0x001113e3), + X(0x0011cde2), X(0x00128bc0), X(0x00134d7e), X(0x0014131b), + X(0x0014dc98), X(0x0015a9f4), X(0x00167b30), X(0x0017504a), + X(0x00182945), X(0x0019061e), X(0x0019e6d7), X(0x001acb6f), + X(0x001bb3e6), X(0x001ca03c), X(0x001d9071), X(0x001e8485), + X(0x001f7c79), X(0x0020784b), X(0x002177fc), X(0x00227b8c), + X(0x002382fb), X(0x00248e49), X(0x00259d76), X(0x0026b081), + X(0x0027c76b), X(0x0028e234), X(0x002a00dc), X(0x002b2361), + X(0x002c49c6), X(0x002d7409), X(0x002ea22a), X(0x002fd42a), + X(0x00310a08), X(0x003243c5), X(0x00338160), X(0x0034c2d9), + X(0x00360830), X(0x00375165), X(0x00389e78), X(0x0039ef6a), + X(0x003b4439), X(0x003c9ce6), X(0x003df971), X(0x003f59da), + X(0x0040be20), X(0x00422645), X(0x00439247), X(0x00450226), + X(0x004675e3), X(0x0047ed7e), X(0x004968f5), X(0x004ae84b), + X(0x004c6b7d), X(0x004df28d), X(0x004f7d7a), X(0x00510c44), + X(0x00529eeb), X(0x00543570), X(0x0055cfd1), X(0x00576e0f), + X(0x00591029), X(0x005ab621), X(0x005c5ff5), X(0x005e0da6), + X(0x005fbf33), X(0x0061749d), X(0x00632de4), X(0x0064eb06), + X(0x0066ac05), X(0x006870e0), X(0x006a3998), X(0x006c062b), + X(0x006dd69b), X(0x006faae6), X(0x0071830d), X(0x00735f10), + X(0x00753eef), X(0x007722a9), X(0x00790a3f), X(0x007af5b1), + X(0x007ce4fe), X(0x007ed826), X(0x0080cf29), X(0x0082ca08), + X(0x0084c8c2), X(0x0086cb57), X(0x0088d1c7), X(0x008adc11), + X(0x008cea37), X(0x008efc37), X(0x00911212), X(0x00932bc7), + X(0x00954957), X(0x00976ac2), X(0x00999006), X(0x009bb925), + X(0x009de61e), X(0x00a016f1), X(0x00a24b9e), X(0x00a48425), + X(0x00a6c086), X(0x00a900c0), X(0x00ab44d4), X(0x00ad8cc2), + X(0x00afd889), X(0x00b22829), X(0x00b47ba2), X(0x00b6d2f5), + X(0x00b92e21), X(0x00bb8d26), X(0x00bdf004), X(0x00c056ba), + X(0x00c2c149), X(0x00c52fb1), X(0x00c7a1f1), X(0x00ca180a), + X(0x00cc91fb), X(0x00cf0fc5), X(0x00d19166), X(0x00d416df), + X(0x00d6a031), X(0x00d92d5a), X(0x00dbbe5b), X(0x00de5333), + X(0x00e0ebe3), X(0x00e3886b), X(0x00e628c9), X(0x00e8ccff), + X(0x00eb750c), X(0x00ee20f0), X(0x00f0d0ab), X(0x00f3843d), + X(0x00f63ba5), X(0x00f8f6e4), X(0x00fbb5fa), X(0x00fe78e5), + X(0x01013fa7), X(0x01040a3f), X(0x0106d8ae), X(0x0109aaf2), + X(0x010c810c), X(0x010f5afb), X(0x011238c0), X(0x01151a5b), + X(0x0117ffcb), X(0x011ae910), X(0x011dd62a), X(0x0120c719), + X(0x0123bbdd), X(0x0126b476), X(0x0129b0e4), X(0x012cb126), + X(0x012fb53c), X(0x0132bd27), X(0x0135c8e6), X(0x0138d879), + X(0x013bebdf), X(0x013f031a), X(0x01421e28), X(0x01453d0a), + X(0x01485fbf), X(0x014b8648), X(0x014eb0a4), X(0x0151ded2), + X(0x015510d4), X(0x015846a8), X(0x015b8050), X(0x015ebdc9), + X(0x0161ff15), X(0x01654434), X(0x01688d24), X(0x016bd9e6), + X(0x016f2a7b), X(0x01727ee1), X(0x0175d718), X(0x01793321), + X(0x017c92fc), X(0x017ff6a7), X(0x01835e24), X(0x0186c972), + X(0x018a3890), X(0x018dab7f), X(0x0191223f), X(0x01949ccf), + X(0x01981b2f), X(0x019b9d5f), X(0x019f235f), X(0x01a2ad2f), + X(0x01a63acf), X(0x01a9cc3e), X(0x01ad617c), X(0x01b0fa8a), + X(0x01b49767), X(0x01b83813), X(0x01bbdc8d), X(0x01bf84d6), + X(0x01c330ee), X(0x01c6e0d4), X(0x01ca9488), X(0x01ce4c0b), + X(0x01d2075b), X(0x01d5c679), X(0x01d98964), X(0x01dd501d), + X(0x01e11aa3), X(0x01e4e8f6), X(0x01e8bb17), X(0x01ec9104), + X(0x01f06abd), X(0x01f44844), X(0x01f82996), X(0x01fc0eb5), + X(0x01fff7a0), X(0x0203e456), X(0x0207d4d9), X(0x020bc926), + X(0x020fc140), X(0x0213bd24), X(0x0217bcd4), X(0x021bc04e), + X(0x021fc793), X(0x0223d2a3), X(0x0227e17d), X(0x022bf421), + X(0x02300a90), X(0x023424c8), X(0x023842ca), X(0x023c6495), + X(0x02408a2a), X(0x0244b389), X(0x0248e0b0), X(0x024d11a0), + X(0x02514659), X(0x02557eda), X(0x0259bb24), X(0x025dfb35), + X(0x02623f0f), X(0x026686b1), X(0x026ad21a), X(0x026f214b), + X(0x02737443), X(0x0277cb02), X(0x027c2588), X(0x028083d5), + X(0x0284e5e9), X(0x02894bc2), X(0x028db562), X(0x029222c8), + X(0x029693f4), X(0x029b08e6), X(0x029f819d), X(0x02a3fe19), + X(0x02a87e5b), X(0x02ad0261), X(0x02b18a2c), X(0x02b615bb), + X(0x02baa50f), X(0x02bf3827), X(0x02c3cf03), X(0x02c869a3), + X(0x02cd0807), X(0x02d1aa2d), X(0x02d65017), X(0x02daf9c4), + X(0x02dfa734), X(0x02e45866), X(0x02e90d5b), X(0x02edc612), + X(0x02f2828b), X(0x02f742c6), X(0x02fc06c3), X(0x0300ce80), + X(0x030599ff), X(0x030a6940), X(0x030f3c40), X(0x03141302), + X(0x0318ed84), X(0x031dcbc6), X(0x0322adc8), X(0x0327938a), + X(0x032c7d0c), X(0x03316a4c), X(0x03365b4d), X(0x033b500c), + X(0x03404889), X(0x034544c6), X(0x034a44c0), X(0x034f4879), + X(0x03544ff0), X(0x03595b24), X(0x035e6a16), X(0x03637cc5), + X(0x03689331), X(0x036dad5a), X(0x0372cb40), X(0x0377ece2), + X(0x037d1240), X(0x03823b5a), X(0x03876830), X(0x038c98c1), + X(0x0391cd0e), X(0x03970516), X(0x039c40d8), X(0x03a18055), + X(0x03a6c38d), X(0x03ac0a7f), X(0x03b1552b), X(0x03b6a390), + X(0x03bbf5af), X(0x03c14b88), X(0x03c6a519), X(0x03cc0263), + X(0x03d16366), X(0x03d6c821), X(0x03dc3094), X(0x03e19cc0), + X(0x03e70ca2), X(0x03ec803d), X(0x03f1f78e), X(0x03f77296), + X(0x03fcf155), X(0x040273cb), X(0x0407f9f7), X(0x040d83d9), + X(0x04131170), X(0x0418a2bd), X(0x041e37c0), X(0x0423d077), + X(0x04296ce4), X(0x042f0d04), X(0x0434b0da), X(0x043a5863), + X(0x044003a0), X(0x0445b290), X(0x044b6534), X(0x04511b8b), + X(0x0456d595), X(0x045c9352), X(0x046254c1), X(0x046819e1), + X(0x046de2b4), X(0x0473af39), X(0x04797f6e), X(0x047f5355), + X(0x04852aec), X(0x048b0635), X(0x0490e52d), X(0x0496c7d6), + X(0x049cae2e), X(0x04a29836), X(0x04a885ed), X(0x04ae7753), + X(0x04b46c68), X(0x04ba652b), X(0x04c0619d), X(0x04c661bc), + X(0x04cc658a), X(0x04d26d04), X(0x04d8782c), X(0x04de8701), + X(0x04e49983), X(0x04eaafb0), X(0x04f0c98a), X(0x04f6e710), + X(0x04fd0842), X(0x05032d1e), X(0x050955a6), X(0x050f81d8), + X(0x0515b1b5), X(0x051be53d), X(0x05221c6e), X(0x05285748), + X(0x052e95cd), X(0x0534d7fa), X(0x053b1dd0), X(0x0541674e), + X(0x0547b475), X(0x054e0544), X(0x055459bb), X(0x055ab1d9), + X(0x05610d9e), X(0x05676d0a), X(0x056dd01c), X(0x057436d5), + X(0x057aa134), X(0x05810f38), 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