/*
* Copyright (c) 2011 The LibYuv project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "row.h"
extern "C" {
#ifdef HAS_ARGBTOYROW_SSSE3
// Constant multiplication table for converting ARGB to I400.
extern "C" TALIGN16(const uint8, kMultiplyMaskARGBToI400[16]) = {
13u, 64u, 33u, 0u, 13u, 64u, 33u, 0u, 13u, 64u, 33u, 0u, 13u, 64u, 33u, 0u
};
extern "C" TALIGN16(const uint8, kAdd16[16]) = {
1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u
};
// Shuffle table for converting BG24 to ARGB.
extern "C" TALIGN16(const uint8, kShuffleMaskBG24ToARGB[16]) = {
0u, 1u, 2u, 12u, 3u, 4u, 5u, 13u, 6u, 7u, 8u, 14u, 9u, 10u, 11u, 15u
};
// Shuffle table for converting RAW to ARGB.
extern "C" TALIGN16(const uint8, kShuffleMaskRAWToARGB[16]) = {
2u, 1u, 0u, 12u, 5u, 4u, 3u, 13u, 8u, 7u, 6u, 14u, 11u, 10u, 9u, 15u
};
void ARGBToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
asm volatile(
"movdqa (%3),%%xmm7\n"
"movdqa (%4),%%xmm6\n"
"movdqa %%xmm6,%%xmm5\n"
"psllw $0x4,%%xmm5\n" // Generate a mask of 0x10 on each byte.
"1:"
"movdqa (%0),%%xmm0\n"
"pmaddubsw %%xmm7,%%xmm0\n"
"movdqa 0x10(%0),%%xmm1\n"
"psrlw $0x7,%%xmm0\n"
"pmaddubsw %%xmm7,%%xmm1\n"
"lea 0x20(%0),%0\n"
"psrlw $0x7,%%xmm1\n"
"packuswb %%xmm1,%%xmm0\n"
"pmaddubsw %%xmm6,%%xmm0\n"
"packuswb %%xmm0,%%xmm0\n"
"paddb %%xmm5,%%xmm0\n"
"movq %%xmm0,(%1)\n"
"lea 0x8(%1),%1\n"
"sub $0x8,%2\n"
"ja 1b\n"
: "+r"(src_argb), // %0
"+r"(dst_y), // %1
"+r"(pix) // %2
: "r"(kMultiplyMaskARGBToI400), // %3
"r"(kAdd16) // %4
: "memory"
);
}
#endif
#ifdef HAS_BG24TOARGBROW_SSSE3
void BG24ToARGBRow_SSSE3(const uint8* src_bg24, uint8* dst_argb, int pix) {
asm volatile(
"pcmpeqb %%xmm7,%%xmm7\n" // generate mask 0xff000000
"pslld $0x18,%%xmm7\n"
"movdqa (%3),%%xmm6\n"
"1:"
"movdqa (%0),%%xmm0\n"
"movdqa 0x10(%0),%%xmm1\n"
"movdqa 0x20(%0),%%xmm3\n"
"lea 0x30(%0),%0\n"
"movdqa %%xmm3,%%xmm2\n"
"palignr $0x8,%%xmm1,%%xmm2\n" // xmm2 = { xmm3[0:3] xmm1[8:15] }
"pshufb %%xmm6,%%xmm2\n"
"por %%xmm7,%%xmm2\n"
"palignr $0xc,%%xmm0,%%xmm1\n" // xmm1 = { xmm3[0:7] xmm0[12:15] }
"pshufb %%xmm6,%%xmm0\n"
"movdqa %%xmm2,0x20(%1)\n"
"por %%xmm7,%%xmm0\n"
"pshufb %%xmm6,%%xmm1\n"
"movdqa %%xmm0,(%1)\n"
"por %%xmm7,%%xmm1\n"
"palignr $0x4,%%xmm3,%%xmm3\n" // xmm3 = { xmm3[4:15] }
"pshufb %%xmm6,%%xmm3\n"
"movdqa %%xmm1,0x10(%1)\n"
"por %%xmm7,%%xmm3\n"
"movdqa %%xmm3,0x30(%1)\n"
"lea 0x40(%1),%1\n"
"sub $0x10,%2\n"
"ja 1b\n"
: "+r"(src_bg24), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
: "r"(kShuffleMaskBG24ToARGB) // %3
: "memory"
);
}
void RAWToARGBRow_SSSE3(const uint8* src_raw, uint8* dst_argb, int pix) {
asm volatile(
"pcmpeqb %%xmm7,%%xmm7\n" // generate mask 0xff000000
"pslld $0x18,%%xmm7\n"
"movdqa (%3),%%xmm6\n"
"1:"
"movdqa (%0),%%xmm0\n"
"movdqa 0x10(%0),%%xmm1\n"
"movdqa 0x20(%0),%%xmm3\n"
"lea 0x30(%0),%0\n"
"movdqa %%xmm3,%%xmm2\n"
"palignr $0x8,%%xmm1,%%xmm2\n" // xmm2 = { xmm3[0:3] xmm1[8:15] }
"pshufb %%xmm6,%%xmm2\n"
"por %%xmm7,%%xmm2\n"
"palignr $0xc,%%xmm0,%%xmm1\n" // xmm1 = { xmm3[0:7] xmm0[12:15] }
"pshufb %%xmm6,%%xmm0\n"
"movdqa %%xmm2,0x20(%1)\n"
"por %%xmm7,%%xmm0\n"
"pshufb %%xmm6,%%xmm1\n"
"movdqa %%xmm0,(%1)\n"
"por %%xmm7,%%xmm1\n"
"palignr $0x4,%%xmm3,%%xmm3\n" // xmm3 = { xmm3[4:15] }
"pshufb %%xmm6,%%xmm3\n"
"movdqa %%xmm1,0x10(%1)\n"
"por %%xmm7,%%xmm3\n"
"movdqa %%xmm3,0x30(%1)\n"
"lea 0x40(%1),%1\n"
"sub $0x10,%2\n"
"ja 1b\n"
: "+r"(src_raw), // %0
"+r"(dst_argb), // %1
"+r"(pix) // %2
: "r"(kShuffleMaskRAWToARGB) // %3
: "memory"
);
}
#endif
#if defined(__x86_64__)
// 64 bit linux gcc version
void FastConvertYUVToRGB32Row(const uint8* y_buf, // rdi
const uint8* u_buf, // rsi
const uint8* v_buf, // rdx
uint8* rgb_buf, // rcx
int width) { // r8
asm volatile(
"1:"
"movzb (%1),%%r10\n"
"lea 1(%1),%1\n"
"movzb (%2),%%r11\n"
"lea 1(%2),%2\n"
"movq 2048(%5,%%r10,8),%%xmm0\n"
"movzb (%0),%%r10\n"
"movq 4096(%5,%%r11,8),%%xmm1\n"
"movzb 0x1(%0),%%r11\n"
"paddsw %%xmm1,%%xmm0\n"
"movq (%5,%%r10,8),%%xmm2\n"
"lea 2(%0),%0\n"
"movq (%5,%%r11,8),%%xmm3\n"
"paddsw %%xmm0,%%xmm2\n"
"paddsw %%xmm0,%%xmm3\n"
"shufps $0x44,%%xmm3,%%xmm2\n"
"psraw $0x6,%%xmm2\n"
"packuswb %%xmm2,%%xmm2\n"
"movq %%xmm2,0x0(%3)\n"
"lea 8(%3),%3\n"
"sub $0x2,%4\n"
"ja 1b\n"
: "+r"(y_buf), // %0
"+r"(u_buf), // %1
"+r"(v_buf), // %2
"+r"(rgb_buf), // %3
"+r"(width) // %4
: "r" (_kCoefficientsRgbY) // %5
: "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3"
);
}
void FastConvertYUVToBGRARow(const uint8* y_buf, // rdi
const uint8* u_buf, // rsi
const uint8* v_buf, // rdx
uint8* rgb_buf, // rcx
int width) { // r8
asm volatile(
"1:"
"movzb (%1),%%r10\n"
"lea 1(%1),%1\n"
"movzb (%2),%%r11\n"
"lea 1(%2),%2\n"
"movq 2048(%5,%%r10,8),%%xmm0\n"
"movzb (%0),%%r10\n"
"movq 4096(%5,%%r11,8),%%xmm1\n"
"movzb 0x1(%0),%%r11\n"
"paddsw %%xmm1,%%xmm0\n"
"movq (%5,%%r10,8),%%xmm2\n"
"lea 2(%0),%0\n"
"movq (%5,%%r11,8),%%xmm3\n"
"paddsw %%xmm0,%%xmm2\n"
"paddsw %%xmm0,%%xmm3\n"
"shufps $0x44,%%xmm3,%%xmm2\n"
"psraw $0x6,%%xmm2\n"
"packuswb %%xmm2,%%xmm2\n"
"movq %%xmm2,0x0(%3)\n"
"lea 8(%3),%3\n"
"sub $0x2,%4\n"
"ja 1b\n"
: "+r"(y_buf), // %0
"+r"(u_buf), // %1
"+r"(v_buf), // %2
"+r"(rgb_buf), // %3
"+r"(width) // %4
: "r" (_kCoefficientsBgraY) // %5
: "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3"
);
}
void FastConvertYUVToABGRRow(const uint8* y_buf, // rdi
const uint8* u_buf, // rsi
const uint8* v_buf, // rdx
uint8* rgb_buf, // rcx
int width) { // r8
asm volatile(
"1:"
"movzb (%1),%%r10\n"
"lea 1(%1),%1\n"
"movzb (%2),%%r11\n"
"lea 1(%2),%2\n"
"movq 2048(%5,%%r10,8),%%xmm0\n"
"movzb (%0),%%r10\n"
"movq 4096(%5,%%r11,8),%%xmm1\n"
"movzb 0x1(%0),%%r11\n"
"paddsw %%xmm1,%%xmm0\n"
"movq (%5,%%r10,8),%%xmm2\n"
"lea 2(%0),%0\n"
"movq (%5,%%r11,8),%%xmm3\n"
"paddsw %%xmm0,%%xmm2\n"
"paddsw %%xmm0,%%xmm3\n"
"shufps $0x44,%%xmm3,%%xmm2\n"
"psraw $0x6,%%xmm2\n"
"packuswb %%xmm2,%%xmm2\n"
"movq %%xmm2,0x0(%3)\n"
"lea 8(%3),%3\n"
"sub $0x2,%4\n"
"ja 1b\n"
: "+r"(y_buf), // %0
"+r"(u_buf), // %1
"+r"(v_buf), // %2
"+r"(rgb_buf), // %3
"+r"(width) // %4
: "r" (_kCoefficientsAbgrY) // %5
: "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3"
);
}
void FastConvertYUV444ToRGB32Row(const uint8* y_buf, // rdi
const uint8* u_buf, // rsi
const uint8* v_buf, // rdx
uint8* rgb_buf, // rcx
int width) { // r8
asm volatile(
"1:"
"movzb (%1),%%r10\n"
"lea 1(%1),%1\n"
"movzb (%2),%%r11\n"
"lea 1(%2),%2\n"
"movq 2048(%5,%%r10,8),%%xmm0\n"
"movzb (%0),%%r10\n"
"movq 4096(%5,%%r11,8),%%xmm1\n"
"paddsw %%xmm1,%%xmm0\n"
"movq (%5,%%r10,8),%%xmm2\n"
"lea 1(%0),%0\n"
"paddsw %%xmm0,%%xmm2\n"
"shufps $0x44,%%xmm2,%%xmm2\n"
"psraw $0x6,%%xmm2\n"
"packuswb %%xmm2,%%xmm2\n"
"movd %%xmm2,0x0(%3)\n"
"lea 4(%3),%3\n"
"sub $0x1,%4\n"
"ja 1b\n"
: "+r"(y_buf), // %0
"+r"(u_buf), // %1
"+r"(v_buf), // %2
"+r"(rgb_buf), // %3
"+r"(width) // %4
: "r" (_kCoefficientsRgbY) // %5
: "memory", "r10", "r11", "xmm0", "xmm1", "xmm2"
);
}
void FastConvertYToRGB32Row(const uint8* y_buf, // rdi
uint8* rgb_buf, // rcx
int width) { // r8
asm volatile(
"1:"
"movzb (%0),%%r10\n"
"movzb 0x1(%0),%%r11\n"
"movq (%3,%%r10,8),%%xmm2\n"
"lea 2(%0),%0\n"
"movq (%3,%%r11,8),%%xmm3\n"
"shufps $0x44,%%xmm3,%%xmm2\n"
"psraw $0x6,%%xmm2\n"
"packuswb %%xmm2,%%xmm2\n"
"movq %%xmm2,0x0(%1)\n"
"lea 8(%1),%1\n"
"sub $0x2,%2\n"
"ja 1b\n"
: "+r"(y_buf), // %0
"+r"(rgb_buf), // %1
"+r"(width) // %2
: "r" (_kCoefficientsRgbY) // %3
: "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3"
);
}
#elif defined(__i386__)
// 32 bit gcc version
void FastConvertYUVToRGB32Row(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width);
asm(
".text\n"
#if defined(OSX) || defined(IOS)
".globl _FastConvertYUVToRGB32Row\n"
"_FastConvertYUVToRGB32Row:\n"
#else
".global FastConvertYUVToRGB32Row\n"
"FastConvertYUVToRGB32Row:\n"
#endif
"pusha\n"
"mov 0x24(%esp),%edx\n"
"mov 0x28(%esp),%edi\n"
"mov 0x2c(%esp),%esi\n"
"mov 0x30(%esp),%ebp\n"
"mov 0x34(%esp),%ecx\n"
"1:"
"movzbl (%edi),%eax\n"
"lea 1(%edi),%edi\n"
"movzbl (%esi),%ebx\n"
"lea 1(%esi),%esi\n"
"movq _kCoefficientsRgbY+2048(,%eax,8),%mm0\n"
"movzbl (%edx),%eax\n"
"paddsw _kCoefficientsRgbY+4096(,%ebx,8),%mm0\n"
"movzbl 0x1(%edx),%ebx\n"
"movq _kCoefficientsRgbY(,%eax,8),%mm1\n"
"lea 2(%edx),%edx\n"
"movq _kCoefficientsRgbY(,%ebx,8),%mm2\n"
"paddsw %mm0,%mm1\n"
"paddsw %mm0,%mm2\n"
"psraw $0x6,%mm1\n"
"psraw $0x6,%mm2\n"
"packuswb %mm2,%mm1\n"
"movntq %mm1,0x0(%ebp)\n"
"lea 8(%ebp),%ebp\n"
"sub $0x2,%ecx\n"
"ja 1b\n"
"popa\n"
"ret\n"
);
void FastConvertYUVToBGRARow(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width);
asm(
".text\n"
#if defined(OSX) || defined(IOS)
".globl _FastConvertYUVToBGRARow\n"
"_FastConvertYUVToBGRARow:\n"
#else
".global FastConvertYUVToBGRARow\n"
"FastConvertYUVToBGRARow:\n"
#endif
"pusha\n"
"mov 0x24(%esp),%edx\n"
"mov 0x28(%esp),%edi\n"
"mov 0x2c(%esp),%esi\n"
"mov 0x30(%esp),%ebp\n"
"mov 0x34(%esp),%ecx\n"
"1:"
"movzbl (%edi),%eax\n"
"lea 1(%edi),%edi\n"
"movzbl (%esi),%ebx\n"
"lea 1(%esi),%esi\n"
"movq _kCoefficientsBgraY+2048(,%eax,8),%mm0\n"
"movzbl (%edx),%eax\n"
"paddsw _kCoefficientsBgraY+4096(,%ebx,8),%mm0\n"
"movzbl 0x1(%edx),%ebx\n"
"movq _kCoefficientsBgraY(,%eax,8),%mm1\n"
"lea 2(%edx),%edx\n"
"movq _kCoefficientsBgraY(,%ebx,8),%mm2\n"
"paddsw %mm0,%mm1\n"
"paddsw %mm0,%mm2\n"
"psraw $0x6,%mm1\n"
"psraw $0x6,%mm2\n"
"packuswb %mm2,%mm1\n"
"movntq %mm1,0x0(%ebp)\n"
"lea 8(%ebp),%ebp\n"
"sub $0x2,%ecx\n"
"ja 1b\n"
"popa\n"
"ret\n"
);
void FastConvertYUVToABGRRow(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width);
asm(
".text\n"
#if defined(OSX) || defined(IOS)
".globl _FastConvertYUVToABGRRow\n"
"_FastConvertYUVToABGRRow:\n"
#else
".global FastConvertYUVToABGRRow\n"
"FastConvertYUVToABGRRow:\n"
#endif
"pusha\n"
"mov 0x24(%esp),%edx\n"
"mov 0x28(%esp),%edi\n"
"mov 0x2c(%esp),%esi\n"
"mov 0x30(%esp),%ebp\n"
"mov 0x34(%esp),%ecx\n"
"1:"
"movzbl (%edi),%eax\n"
"lea 1(%edi),%edi\n"
"movzbl (%esi),%ebx\n"
"lea 1(%esi),%esi\n"
"movq _kCoefficientsAbgrY+2048(,%eax,8),%mm0\n"
"movzbl (%edx),%eax\n"
"paddsw _kCoefficientsAbgrY+4096(,%ebx,8),%mm0\n"
"movzbl 0x1(%edx),%ebx\n"
"movq _kCoefficientsAbgrY(,%eax,8),%mm1\n"
"lea 2(%edx),%edx\n"
"movq _kCoefficientsAbgrY(,%ebx,8),%mm2\n"
"paddsw %mm0,%mm1\n"
"paddsw %mm0,%mm2\n"
"psraw $0x6,%mm1\n"
"psraw $0x6,%mm2\n"
"packuswb %mm2,%mm1\n"
"movntq %mm1,0x0(%ebp)\n"
"lea 8(%ebp),%ebp\n"
"sub $0x2,%ecx\n"
"ja 1b\n"
"popa\n"
"ret\n"
);
void FastConvertYUV444ToRGB32Row(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width);
asm(
".text\n"
#if defined(OSX) || defined(IOS)
".globl _FastConvertYUV444ToRGB32Row\n"
"_FastConvertYUV444ToRGB32Row:\n"
#else
".global FastConvertYUV444ToRGB32Row\n"
"FastConvertYUV444ToRGB32Row:\n"
#endif
"pusha\n"
"mov 0x24(%esp),%edx\n"
"mov 0x28(%esp),%edi\n"
"mov 0x2c(%esp),%esi\n"
"mov 0x30(%esp),%ebp\n"
"mov 0x34(%esp),%ecx\n"
"1:"
"movzbl (%edi),%eax\n"
"lea 1(%edi),%edi\n"
"movzbl (%esi),%ebx\n"
"lea 1(%esi),%esi\n"
"movq _kCoefficientsRgbY+2048(,%eax,8),%mm0\n"
"movzbl (%edx),%eax\n"
"paddsw _kCoefficientsRgbY+4096(,%ebx,8),%mm0\n"
"lea 1(%edx),%edx\n"
"paddsw _kCoefficientsRgbY(,%eax,8),%mm0\n"
"psraw $0x6,%mm0\n"
"packuswb %mm0,%mm0\n"
"movd %mm0,0x0(%ebp)\n"
"lea 4(%ebp),%ebp\n"
"sub $0x1,%ecx\n"
"ja 1b\n"
"popa\n"
"ret\n"
);
void FastConvertYToRGB32Row(const uint8* y_buf,
uint8* rgb_buf,
int width);
asm(
".text\n"
#if defined(OSX) || defined(IOS)
".globl _FastConvertYToRGB32Row\n"
"_FastConvertYToRGB32Row:\n"
#else
".global FastConvertYToRGB32Row\n"
"FastConvertYToRGB32Row:\n"
#endif
"push %ebx\n"
"mov 0x8(%esp),%eax\n"
"mov 0xc(%esp),%edx\n"
"mov 0x10(%esp),%ecx\n"
"1:"
"movzbl (%eax),%ebx\n"
"movq _kCoefficientsRgbY(,%ebx,8),%mm0\n"
"psraw $0x6,%mm0\n"
"movzbl 0x1(%eax),%ebx\n"
"movq _kCoefficientsRgbY(,%ebx,8),%mm1\n"
"psraw $0x6,%mm1\n"
"packuswb %mm1,%mm0\n"
"lea 0x2(%eax),%eax\n"
"movq %mm0,(%edx)\n"
"lea 0x8(%edx),%edx\n"
"sub $0x2,%ecx\n"
"ja 1b\n"
"pop %ebx\n"
"ret\n"
);
#else
// C reference code that mimic the YUV assembly.
#define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x)))
#define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \
(((x) + (y)) > 32767 ? 32767 : ((x) + (y))))
static inline void YuvPixel(uint8 y,
uint8 u,
uint8 v,
uint8* rgb_buf,
int ashift,
int rshift,
int gshift,
int bshift) {
int b = _kCoefficientsRgbY[256+u][0];
int g = _kCoefficientsRgbY[256+u][1];
int r = _kCoefficientsRgbY[256+u][2];
int a = _kCoefficientsRgbY[256+u][3];
b = paddsw(b, _kCoefficientsRgbY[512+v][0]);
g = paddsw(g, _kCoefficientsRgbY[512+v][1]);
r = paddsw(r, _kCoefficientsRgbY[512+v][2]);
a = paddsw(a, _kCoefficientsRgbY[512+v][3]);
b = paddsw(b, _kCoefficientsRgbY[y][0]);
g = paddsw(g, _kCoefficientsRgbY[y][1]);
r = paddsw(r, _kCoefficientsRgbY[y][2]);
a = paddsw(a, _kCoefficientsRgbY[y][3]);
b >>= 6;
g >>= 6;
r >>= 6;
a >>= 6;
*reinterpret_cast<uint32*>(rgb_buf) = (packuswb(b) << bshift) |
(packuswb(g) << gshift) |
(packuswb(r) << rshift) |
(packuswb(a) << ashift);
}
void FastConvertYUVToRGB32Row(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; x += 2) {
uint8 u = u_buf[x >> 1];
uint8 v = v_buf[x >> 1];
uint8 y0 = y_buf[x];
YuvPixel(y0, u, v, rgb_buf, 24, 16, 8, 0);
if ((x + 1) < width) {
uint8 y1 = y_buf[x + 1];
YuvPixel(y1, u, v, rgb_buf + 4, 24, 16, 8, 0);
}
rgb_buf += 8; // Advance 2 pixels.
}
}
void FastConvertYUVToBGRARow(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; x += 2) {
uint8 u = u_buf[x >> 1];
uint8 v = v_buf[x >> 1];
uint8 y0 = y_buf[x];
YuvPixel(y0, u, v, rgb_buf, 0, 8, 16, 24);
if ((x + 1) < width) {
uint8 y1 = y_buf[x + 1];
YuvPixel(y1, u, v, rgb_buf + 4, 0, 8, 16, 24);
}
rgb_buf += 8; // Advance 2 pixels.
}
}
void FastConvertYUVToABGRRow(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; x += 2) {
uint8 u = u_buf[x >> 1];
uint8 v = v_buf[x >> 1];
uint8 y0 = y_buf[x];
YuvPixel(y0, u, v, rgb_buf, 24, 0, 8, 16);
if ((x + 1) < width) {
uint8 y1 = y_buf[x + 1];
YuvPixel(y1, u, v, rgb_buf + 4, 24, 0, 8, 16);
}
rgb_buf += 8; // Advance 2 pixels.
}
}
void FastConvertYUV444ToRGB32Row(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; ++x) {
uint8 u = u_buf[x];
uint8 v = v_buf[x];
uint8 y = y_buf[x];
YuvPixel(y, u, v, rgb_buf, 24, 16, 8, 0);
rgb_buf += 4; // Advance 1 pixel.
}
}
void FastConvertYToRGB32Row(const uint8* y_buf,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; ++x) {
uint8 y = y_buf[x];
YuvPixel(y, 128, 128, rgb_buf, 24, 16, 8, 0);
rgb_buf += 4; // Advance 1 pixel.
}
}
#endif
} // extern "C"