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|
; Copyright (c) 2011 The Chromium Authors. All rights reserved.
; Use of this source code is governed by a BSD-style license that can be
; found in the LICENSE file.
%include "third_party/x86inc/x86inc.asm"
;
; This file uses SSE, SSE2, SSE3, and SSSE3, which are supported by all ATOM
; processors.
;
SECTION_TEXT
CPU SSE, SSE3, SSE3, SSSE3
;
; XMM registers representing constants. We must not use these registers as
; destination operands.
; for (int i = 0; i < 16; i += 4) {
; xmm7.b[i] = 25; xmm7.b[i+1] = 2; xmm7.b[i+2] = 66; xmm7.b[i+3] = 0;
; xmm6.b[i] = 0; xmm6.b[i+1] = 127; xmm6.b[i+2] = 0; xmm6.b[i+3] = 0;
; xmm5.b[i] = 112; xmm5.b[i+1] = -74; xmm5.b[i+2] = -38; xmm5.b[i+3] = 0;
; xmm4.b[i] = -18; xmm4.b[i+1] = -94; xmm4.b[i+2] = 112; xmm4.b[i+3] = 0;
; }
;
%define XMM_CONST_Y0 xmm7
%define XMM_CONST_Y1 xmm6
%define XMM_CONST_U xmm5
%define XMM_CONST_V xmm4
%define XMM_CONST_128 xmm3
;
; LOAD_XMM %1 (xmm), %2 (imm32)
; Loads an immediate value to an XMM register.
; %1.d[0] = %1.d[1] = %1.d[2] = %1.d[3] = %2;
;
%macro LOAD_XMM 2
mov TEMPd, %2
movd %1, TEMPd
pshufd %1, %1, 00000000B
%endmacro
;
; UNPACKRGB %1 (xmm), %2 (imm8)
; Unpacks one RGB pixel in the specified XMM register.
; for (int i = 15; i > %2; --i) %1.b[i] = %1.b[i - 1];
; %1.b[%2] = 0;
; for (int i = %2 - 1; i >= 0; --i) %1.b[i] = %1.b[i];
;
%macro UNPACKRGB 2
movdqa xmm1, %1
psrldq xmm1, %2
pslldq xmm1, %2
pxor %1, xmm1
pslldq xmm1, 1
por %1, xmm1
%endmacro
;
; READ_ARGB %1 (xmm), %2 (imm)
; Read the specified number of ARGB (or RGB) pixels from the source and store
; them to the destination xmm register. If the input format is RGB, we read RGB
; pixels and convert them to ARGB pixels. (For this case, the alpha values of
; the output pixels become 0.)
;
%macro READ_ARGB 2
%if PIXELSIZE == 4
; Read ARGB pixels from the source. (This macro assumes the input buffer may
; not be aligned to a 16-byte boundary.)
%if %2 == 1
movd %1, DWORD [ARGBq + WIDTHq * 4 * 2]
%elif %2 == 2
movq %1, QWORD [ARGBq + WIDTHq * 4 * 2]
%elif %2 == 4
movdqu %1, DQWORD [ARGBq + WIDTHq * 4 * 2]
%else
%error unsupported number of pixels.
%endif
%elif PIXELSIZE == 3
; Read RGB pixels from the source and convert them to ARGB pixels.
%if %2 == 1
; Read one RGB pixel and convert it to one ARGB pixel.
; Save the WIDTH register to xmm1. (This macro needs to break it.)
MOVq xmm1, WIDTHq
; Once read three bytes from the source to TEMPd, and copy it to the
; destination xmm register.
lea WIDTHq, [WIDTHq + WIDTHq * 2]
movzx TEMPd, BYTE [ARGBq + WIDTHq * 2 + 2]
shl TEMPd, 16
mov TEMPw, WORD [ARGBq + WIDTHq * 2]
movd %1, TEMPd
; Restore the WIDTH register.
MOVq WIDTHq, xmm1
%elif %2 == 2
; Read two RGB pixels and convert them to two ARGB pixels.
; Read six bytes from the source to the destination xmm register.
mov TEMPq, WIDTHq
lea TEMPq, [TEMPq + TEMPq * 2]
movd %1, DWORD [ARGBq + TEMPq * 2]
pinsrw %1, WORD [ARGBq + TEMPq * 2 + 4], 3
; Fill the alpha values of these RGB pixels with 0 and convert them to two
; ARGB pixels.
UNPACKRGB %1, 3
%elif %2 == 4
; Read four RGB pixels and convert them to four ARGB pixels.
; Read twelve bytes from the source to the destination xmm register.
mov TEMPq, WIDTHq
lea TEMPq, [TEMPq + TEMPq * 2]
movq %1, QWORD [ARGBq + TEMPq * 2]
movd xmm1, DWORD [ARGBq + TEMPq * 2 + 8]
shufps %1, xmm1, 01000100B
; Fill the alpha values of these RGB pixels with 0 and convert them to four
; ARGB pixels.
UNPACKRGB %1, 3
UNPACKRGB %1, 4 + 3
UNPACKRGB %1, 4 + 4 + 3
%else
%error unsupported number of pixels.
%endif
%else
%error unsupported PIXELSIZE value.
%endif
%endmacro
;
; CALC_Y %1 (xmm), %2 (xmm)
; Calculates four Y values from four ARGB pixels stored in %2.
; %1.b[0] = ToByte((25 * B(0) + 129 * G(0) + 66 * R(0) + 128) / 256 + 16);
; %1.b[1] = ToByte((25 * B(1) + 129 * G(1) + 66 * R(1) + 128) / 256 + 16);
; %1.b[2] = ToByte((25 * B(2) + 129 * G(2) + 66 * R(2) + 128) / 256 + 16);
; %1.b[3] = ToByte((25 * B(3) + 129 * G(3) + 66 * R(3) + 128) / 256 + 16);
;
%macro CALC_Y 2
; To avoid signed saturation, we divide this conversion formula into two
; formulae and store their results into two XMM registers %1 and xmm2.
; %1.w[0] = 25 * %2.b[0] + 2 * %2.b[1] + 66 * %2.b[2] + 0 * %2.b[3];
; %1.w[1] = 25 * %2.b[4] + 2 * %2.b[5] + 66 * %2.b[6] + 0 * %2.b[7];
; %1.w[2] = 25 * %2.b[8] + 2 * %2.b[9] + 66 * %2.b[10] + 0 * %2.b[11];
; %1.w[3] = 25 * %2.b[12] + 2 * %2.b[13] + 66 * %2.b[14] + 0 * %2.b[15];
; xmm2.w[0] = 0 * %2.b[0] + 127 * %2.b[1] + 0 * %2.b[2] + 0 * %2.b[3];
; xmm2.w[1] = 0 * %2.b[4] + 127 * %2.b[5] + 0 * %2.b[6] + 0 * %2.b[7];
; xmm2.w[2] = 0 * %2.b[8] + 127 * %2.b[9] + 0 * %2.b[10] + 0 * %2.b[11];
; xmm2.w[3] = 0 * %2.b[12] + 127 * %2.b[13] + 0 * %2.b[14] + 0 * %2.b[15];
movdqa %1, %2
pmaddubsw %1, XMM_CONST_Y0
phaddsw %1, %1
movdqa xmm2, %2
pmaddubsw xmm2, XMM_CONST_Y1
phaddsw xmm2, xmm2
; %1.b[0] = ToByte((%1.w[0] + xmm2.w[0] + 128) / 256 + 16);
; %1.b[1] = ToByte((%1.w[1] + xmm2.w[1] + 128) / 256 + 16);
; %1.b[2] = ToByte((%1.w[2] + xmm2.w[2] + 128) / 256 + 16);
; %1.b[3] = ToByte((%1.w[3] + xmm2.w[3] + 128) / 256 + 16);
paddw %1, xmm2
movdqa xmm2, XMM_CONST_128
paddw %1, xmm2
psrlw %1, 8
psrlw xmm2, 3
paddw %1, xmm2
packuswb %1, %1
%endmacro
;
; INIT_UV %1 (r32), %2 (reg) %3 (imm)
;
%macro INIT_UV 3
%if SUBSAMPLING == 1 && LINE == 1
%if %3 == 1 || %3 == 2
movzx %1, BYTE [%2 + WIDTHq]
%elif %3 == 4
movzx %1, WORD [%2 + WIDTHq]
%else
%error unsupported number of pixels.
%endif
%endif
%endmacro
;
; CALC_UV %1 (xmm), %2 (xmm), %3 (xmm), %4 (r32)
; Calculates two U (or V) values from four ARGB pixels stored in %2.
; if %3 == XMM_CONST_U
; if (SUBSAMPLING) {
; %1.b[0] = ToByte((112 * B(0) - 74 * G(0) - 38 * R(0) + 128) / 256 + 128);
; %1.b[0] = ToByte((112 * B(0) - 74 * G(0) - 38 * R(0) + 128) / 256 + 128);
; %1.b[1] = ToByte((112 * B(2) - 74 * G(2) - 38 * R(2) + 128) / 256 + 128);
; %1.b[1] = ToByte((112 * B(2) - 74 * G(2) - 38 * R(2) + 128) / 256 + 128);
; } else {
; %1.b[0] = ToByte((112 * B(0) - 74 * G(0) - 38 * R(0) + 128) / 256 + 128);
; %1.b[1] = ToByte((112 * B(2) - 74 * G(2) - 38 * R(2) + 128) / 256 + 128);
; }
; if %3 == XMM_CONST_V
; %1.b[0] = ToByte((-18 * B(0) - 94 * G(0) + 112 * R(0) + 128) / 256 + 128);
; %1.b[1] = ToByte((-18 * B(2) - 94 * G(2) + 112 * R(2) + 128) / 256 + 128);
;
%macro CALC_UV 4
; for (int i = 0; i < 4; ++i) {
; %1.w[i] = 0;
; for (int j = 0; j < 4; ++j)
; %1.w[i] += %3.b[i * 4 + j] + %2.b[i * 4 + j];
; }
movdqa %1, %2
pmaddubsw %1, %3
phaddsw %1, %1
%if SUBSAMPLING == 1
; %1.w[0] = (%1.w[0] + %1.w[1] + 1) / 2;
; %1.w[1] = (%1.w[1] + %1.w[0] + 1) / 2;
; %1.w[2] = (%1.w[2] + %1.w[3] + 1) / 2;
; %1.w[3] = (%1.w[3] + %1.w[2] + 1) / 2;
pshuflw xmm2, %1, 10110001B
pavgw %1, xmm2
%endif
; %1.b[0] = ToByte((%1.w[0] + 128) / 256 + 128);
; %1.b[1] = ToByte((%1.w[2] + 128) / 256 + 128);
pshuflw %1, %1, 10001000B
paddw %1, XMM_CONST_128
psraw %1, 8
paddw %1, XMM_CONST_128
packuswb %1, %1
%if SUBSAMPLING == 1 && LINE == 1
; %1.b[0] = (%1.b[0] + %3.b[0] + 1) / 2;
; %1.b[1] = (%1.b[1] + %3.b[1] + 1) / 2;
movd xmm2, %4
pavgb %1, xmm2
%endif
%endmacro
;
; extern "C" void ConvertARGBToYUVRow_SSSE3(const uint8* argb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertARGBToYUVRow_SSSE3
%define PIXELSIZE 4
%define SUBSAMPLING 0
%define LINE 0
%include "convert_rgb_to_yuv_ssse3.inc"
;
; extern "C" void ConvertRGBToYUVRow_SSSE3(const uint8* rgb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertRGBToYUVRow_SSSE3
%define PIXELSIZE 3
%define SUBSAMPLING 0
%define LINE 0
%include "convert_rgb_to_yuv_ssse3.inc"
;
; extern "C" void ConvertARGBToYUVEven_SSSE3(const uint8* argb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertARGBToYUVEven_SSSE3
%define PIXELSIZE 4
%define SUBSAMPLING 1
%define LINE 0
%include "convert_rgb_to_yuv_ssse3.inc"
;
; extern "C" void ConvertARGBToYUVOdd_SSSE3(const uint8* argb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertARGBToYUVOdd_SSSE3
%define PIXELSIZE 4
%define SUBSAMPLING 1
%define LINE 1
%include "convert_rgb_to_yuv_ssse3.inc"
;
; extern "C" void ConvertRGBToYUVEven_SSSE3(const uint8* rgb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertRGBToYUVEven_SSSE3
%define PIXELSIZE 3
%define SUBSAMPLING 1
%define LINE 0
%include "convert_rgb_to_yuv_ssse3.inc"
;
; extern "C" void ConvertRGBToYUVOdd_SSSE3(const uint8* rgb,
; uint8* y,
; uint8* u,
; uint8* v,
; ptrdiff_t width);
;
%define SYMBOL ConvertRGBToYUVOdd_SSSE3
%define PIXELSIZE 3
%define SUBSAMPLING 1
%define LINE 1
%include "convert_rgb_to_yuv_ssse3.inc"
|
