aboutsummaryrefslogtreecommitdiffstats
path: root/Tremolo/bitwise.c
diff options
context:
space:
mode:
Diffstat (limited to 'Tremolo/bitwise.c')
-rw-r--r--Tremolo/bitwise.c849
1 files changed, 849 insertions, 0 deletions
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 <string.h>
+#include <stdlib.h>
+#include "misc.h"
+#include "ogg.h"
+
+#include <stdio.h>
+
+
+#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*8<b->headbit)
+ /* 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 <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#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;i<compsize;i++)
+ or->buffer->data[i]= comp[i];
+ or->length=i;
+
+ oggpack_readinit(&r,or);
+ for(i=0;i<vals;i++){
+ unsigned long test;
+ int tbit=bits?bits:ilog(b[i]);
+ if((test=oggpack_look(&r,tbit))==0xffffffff)
+ report("out of data!\n");
+ if(test!=(b[i]&mask[tbit])){
+ fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test);
+ report("looked at incorrect value!\n");
+ }
+ if((test=oggpack_read(&r,tbit))==0xffffffff){
+ report("premature end of data when reading!\n");
+ }
+ if(test!=(b[i]&mask[tbit])){
+ fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test);
+ report("read incorrect value!\n");
+ }
+ bitcount+=tbit;
+
+ if(bitcount!=oggpack_bits(&r))
+ report("wrong number of bits while reading!\n");
+ if((bitcount+7)/8!=oggpack_bytes(&r))
+ report("wrong number of bytes while reading!\n");
+
+ }
+ if(oggpack_bytes(&r)!=(bitcount+7)/8){
+ fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), (bitcount+7)/8);
+ report("leftover bytes after read!\n");
+ }
+ ogg_buffer_release(or);
+}
+
+void _end_verify(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? */
+ 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;i<test2size;i++){
+ or->buffer->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<test2size;i++){
+ unsigned long test;
+ if((test=oggpack_look(&r,32))==0xffffffffUL)report("out of data. failed!");
+ if(test!=large[i]){
+ fprintf(stderr,"%ld != %ld (%lx!=%lx):",test,large[i],
+ test,large[i]);
+ report("read incorrect value!\n");
+ }
+ oggpack_adv(&r,32);
+ }
+ ogg_buffer_release(or);
+ if(oggpack_bytes(&r)!=test2size*4){
+ fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), test2size*4);
+ report("leftover bytes after read!\n");
+ }
+ fprintf(stderr,"ok.");
+
+ fprintf(stderr,"\nSmall unclipped packing (LSb): ");
+ cliptest(testbuffer1,test1size,7,four,foursize);
+ fprintf(stderr,"ok.");
+
+ fprintf(stderr,"\nLarge unclipped packing (LSb): ");
+ cliptest(testbuffer2,test2size,17,five,fivesize);
+ fprintf(stderr,"ok.");
+
+ fprintf(stderr,"\nSingle bit unclipped packing (LSb): ");
+ cliptest(testbuffer3,test3size,1,six,sixsize);
+ fprintf(stderr,"ok.");
+
+ fprintf(stderr,"\nTesting read past end (LSb): ");
+ {
+ unsigned char dda[]={0,0,0,0};
+ ogg_buffer lob={dda,8,0,{0}};
+ ogg_reference lor={&lob,0,8,0};
+
+ oggpack_readinit(&r,&lor);
+ for(i=0;i<64;i++){
+ if(oggpack_read(&r,1)<0){
+ fprintf(stderr,"failed; got -1 prematurely.\n");
+ exit(1);
+ }
+ }
+ if(oggpack_look(&r,1)!=-1 ||
+ oggpack_read(&r,1)!=-1){
+ fprintf(stderr,"failed; read past end without -1.\n");
+ exit(1);
+ }
+ }
+ {
+ unsigned char dda[]={0,0,0,0};
+ ogg_buffer lob={dda,8,0,{0}};
+ ogg_reference lor={&lob,0,8,0};
+ unsigned long test;
+
+ oggpack_readinit(&r,&lor);
+ if((test=oggpack_read(&r,30))==0xffffffffUL ||
+ (test=oggpack_read(&r,16))==0xffffffffUL){
+ fprintf(stderr,"failed 2; got -1 prematurely.\n");
+ exit(1);
+ }
+
+ if((test=oggpack_look(&r,18))==0xffffffffUL){
+ fprintf(stderr,"failed 3; got -1 prematurely.\n");
+ exit(1);
+ }
+ if((test=oggpack_look(&r,19))!=0xffffffffUL){
+ fprintf(stderr,"failed; read past end without -1.\n");
+ exit(1);
+ }
+ if((test=oggpack_look(&r,32))!=0xffffffffUL){
+ fprintf(stderr,"failed; read past end without -1.\n");
+ exit(1);
+ }
+ }
+ fprintf(stderr,"ok.\n");
+
+ /* now the scary shit: randomized testing */
+
+ for(i=0;i<10000;i++){
+ long j,count=0,count2=0,bitcount=0;
+ unsigned long values[TESTWORDS];
+ int len[TESTWORDS];
+ unsigned char flat[4*TESTWORDS]; /* max possible needed size */
+
+ memset(flat,0,sizeof(flat));
+ fprintf(stderr,"\rRandomized testing (LSb)... (%ld) ",10000-i);
+
+ /* generate a list of words and lengths */
+ /* write the required number of bits out to packbuffer */
+ {
+ long word=0;
+ long bit=0;
+ int k;
+
+ for(j=0;j<TESTWORDS;j++){
+ values[j]=rand();
+ len[j]=(rand()%33);
+
+ for(k=0;k<len[j];k++){
+ flat[word] |= ((values[j]>>k)&0x1)<<bit;
+ bit++;
+ bitcount++;
+ if(bit>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;k<ilen;k++)
+ orl->buffer->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<begin;j++)
+ bitcount+=len[j];
+ or=ogg_buffer_pretruncate(or,bitcount/8);
+ bitoffset=bitcount%=8;
+ for(;j<begin+ilen;j++)
+ bitcount+=len[j];
+ ogg_buffer_posttruncate(or,((bitcount+7)/8));
+
+ if((count=ogg_buffer_length(or))!=(bitcount+7)/8){
+ fprintf(stderr,"\nERROR: buffer length incorrect after truncate.\n");
+ exit(1);
+ }
+
+ oggpack_readinit(&o,or);
+
+ /* verify bit count */
+ if(oggpack_bits(&o)!=0){
+ fprintf(stderr,"\nERROR: Read bitcounter not zero!\n");
+ exit(1);
+ }
+ if(oggpack_bytes(&o)!=0){
+ fprintf(stderr,"\nERROR: Read bytecounter not zero!\n");
+ exit(1);
+ }
+
+ bitcount=bitoffset;
+ oggpack_read(&o,bitoffset);
+
+ /* read and compare to original list */
+ for(j=begin;j<begin+ilen;j++){
+ temp=oggpack_read(&o,len[j]);
+ if(temp==0xffffffffUL){
+ fprintf(stderr,"\nERROR: End of stream too soon! word: %ld,%d\n",
+ j-begin,ilen);
+ exit(1);
+ }
+ if(temp!=(values[j]&mask[len[j]])){
+ fprintf(stderr,"\nERROR: Incorrect read %lx != %lx, word %ld, len %d\n"
+,
+ values[j]&mask[len[j]],temp,j-begin,len[j]);
+ exit(1);
+ }
+ bitcount+=len[j];
+ if(oggpack_bits(&o)!=bitcount){
+ fprintf(stderr,"\nERROR: Read bitcounter %d != %ld!\n",
+ bitcount,oggpack_bits(&o));
+ exit(1);
+ }
+ if(oggpack_bytes(&o)!=(bitcount+7)/8){
+ fprintf(stderr,"\nERROR: Read bytecounter %d != %ld!\n",
+ (bitcount+7)/8,oggpack_bytes(&o));
+ exit(1);
+ }
+
+ }
+ _end_verify(count);
+
+ /* look/adv version */
+ oggpack_readinit(&o,or);
+ bitcount=bitoffset;
+ oggpack_adv(&o,bitoffset);
+
+ /* read and compare to original list */
+ for(j=begin;j<begin+ilen;j++){
+ temp=oggpack_look(&o,len[j]);
+
+ if(temp==0xffffffffUL){
+ fprintf(stderr,"\nERROR: End of stream too soon! word: %ld\n",
+ j-begin);
+ exit(1);
+ }
+ if(temp!=(values[j]&mask[len[j]])){
+ fprintf(stderr,"\nERROR: Incorrect look %lx != %lx, word %ld, len %d\n"
+,
+ values[j]&mask[len[j]],temp,j-begin,len[j]);
+ exit(1);
+ }
+ oggpack_adv(&o,len[j]);
+ bitcount+=len[j];
+ if(oggpack_bits(&o)!=bitcount){
+ fprintf(stderr,"\nERROR: Look/Adv bitcounter %d != %ld!\n",
+ bitcount,oggpack_bits(&o));
+ exit(1);
+ }
+ if(oggpack_bytes(&o)!=(bitcount+7)/8){
+ fprintf(stderr,"\nERROR: Look/Adv bytecounter %d != %ld!\n",
+ (bitcount+7)/8,oggpack_bytes(&o));
+ exit(1);
+ }
+
+ }
+ _end_verify2(count);
+
+ }
+ ogg_buffer_release(or);
+ }
+ }
+ fprintf(stderr,"\rRandomized testing (LSb)... ok. \n");
+
+ return(0);
+}
+
+#ifdef _WIN32_WCE
+int WinMain(void){
+ return main();
+}
+#endif
+
+#endif
generated by cgit v1.1 at 2024-04-28 00:27:40 +0000