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FFmpeg/libswscale/rgb2rgb_template.c

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/*
* software RGB to RGB converter
* pluralize by software PAL8 to RGB converter
* software YUV to YUV converter
* software YUV to RGB converter
* Written by Nick Kurshev.
* palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
* lot of big-endian byte order fixes by Alex Beregszaszi
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stddef.h>
static inline void rgb24tobgr32_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint8_t *dest = dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
#if HAVE_BIGENDIAN
/* RGB24 (= R, G, B) -> RGB32 (= A, B, G, R) */
*dest++ = 255;
*dest++ = s[2];
*dest++ = s[1];
*dest++ = s[0];
s += 3;
#else
*dest++ = *s++;
*dest++ = *s++;
*dest++ = *s++;
*dest++ = 255;
#endif
}
}
static inline void rgb32tobgr24_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint8_t *dest = dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
#if HAVE_BIGENDIAN
/* RGB32 (= A, B, G, R) -> RGB24 (= R, G, B) */
s++;
dest[2] = *s++;
dest[1] = *s++;
dest[0] = *s++;
dest += 3;
#else
*dest++ = *s++;
*dest++ = *s++;
*dest++ = *s++;
s++;
#endif
}
}
/*
* original by Strepto/Astral
* ported to gcc & bugfixed: A'rpi
* MMXEXT, 3DNOW optimization by Nick Kurshev
* 32-bit C version, and and&add trick by Michael Niedermayer
*/
static inline void rgb15to16_c(const uint8_t *src, uint8_t *dst, int src_size)
{
register uint8_t *d = dst;
register const uint8_t *s = src;
register const uint8_t *end = s + src_size;
const uint8_t *mm_end = end - 3;
while (s < mm_end) {
register unsigned x = *((const uint32_t *)s);
*((uint32_t *)d) = (x & 0x7FFF7FFF) + (x & 0x7FE07FE0);
d += 4;
s += 4;
}
if (s < end) {
register unsigned short x = *((const uint16_t *)s);
*((uint16_t *)d) = (x & 0x7FFF) + (x & 0x7FE0);
}
}
static inline void rgb16to15_c(const uint8_t *src, uint8_t *dst, int src_size)
{
register uint8_t *d = dst;
register const uint8_t *s = src;
register const uint8_t *end = s + src_size;
const uint8_t *mm_end = end - 3;
while (s < mm_end) {
register uint32_t x = *((const uint32_t *)s);
*((uint32_t *)d) = ((x >> 1) & 0x7FE07FE0) | (x & 0x001F001F);
s += 4;
d += 4;
}
if (s < end) {
register uint16_t x = *((const uint16_t *)s);
*((uint16_t *)d) = ((x >> 1) & 0x7FE0) | (x & 0x001F);
}
}
static inline void rgb32to16_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
register int rgb = *(const uint32_t *)s;
s += 4;
*d++ = ((rgb & 0xFF) >> 3) +
((rgb & 0xFC00) >> 5) +
((rgb & 0xF80000) >> 8);
}
}
static inline void rgb32tobgr16_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
register int rgb = *(const uint32_t *)s;
s += 4;
*d++ = ((rgb & 0xF8) << 8) +
((rgb & 0xFC00) >> 5) +
((rgb & 0xF80000) >> 19);
}
}
static inline void rgb32to15_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
register int rgb = *(const uint32_t *)s;
s += 4;
*d++ = ((rgb & 0xFF) >> 3) +
((rgb & 0xF800) >> 6) +
((rgb & 0xF80000) >> 9);
}
}
static inline void rgb32tobgr15_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
register int rgb = *(const uint32_t *)s;
s += 4;
*d++ = ((rgb & 0xF8) << 7) +
((rgb & 0xF800) >> 6) +
((rgb & 0xF80000) >> 19);
}
}
static inline void rgb24tobgr16_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
const int b = *s++;
const int g = *s++;
const int r = *s++;
*d++ = (b >> 3) | ((g & 0xFC) << 3) | ((r & 0xF8) << 8);
}
}
static inline void rgb24to16_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
const int r = *s++;
const int g = *s++;
const int b = *s++;
*d++ = (b >> 3) | ((g & 0xFC) << 3) | ((r & 0xF8) << 8);
}
}
static inline void rgb24tobgr15_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
const int b = *s++;
const int g = *s++;
const int r = *s++;
*d++ = (b >> 3) | ((g & 0xF8) << 2) | ((r & 0xF8) << 7);
}
}
static inline void rgb24to15_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t *d = (uint16_t *)dst;
const uint8_t *s = src;
const uint8_t *end = s + src_size;
while (s < end) {
const int r = *s++;
const int g = *s++;
const int b = *s++;
*d++ = (b >> 3) | ((g & 0xF8) << 2) | ((r & 0xF8) << 7);
}
}
/*
* I use less accurate approximation here by simply left-shifting the input
* value and filling the low order bits with zeroes. This method improves PNG
* compression but this scheme cannot reproduce white exactly, since it does
* not generate an all-ones maximum value; the net effect is to darken the
* image slightly.
*
* The better method should be "left bit replication":
*
* 4 3 2 1 0
* ---------
* 1 1 0 1 1
*
* 7 6 5 4 3 2 1 0
* ----------------
* 1 1 0 1 1 1 1 0
* |=======| |===|
* | leftmost bits repeated to fill open bits
* |
* original bits
*/
static inline void rgb15tobgr24_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
const uint16_t *end = s + src_size / 2;
while (s < end) {
register uint16_t bgr = *s++;
*d++ = (bgr & 0x1F) << 3;
*d++ = (bgr & 0x3E0) >> 2;
*d++ = (bgr & 0x7C00) >> 7;
}
}
static inline void rgb16tobgr24_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
uint8_t *d = (uint8_t *)dst;
const uint16_t *s = (const uint16_t *)src;
const uint16_t *end = s + src_size / 2;
while (s < end) {
register uint16_t bgr = *s++;
*d++ = (bgr & 0x1F) << 3;
*d++ = (bgr & 0x7E0) >> 3;
*d++ = (bgr & 0xF800) >> 8;
}
}
static inline void rgb15to32_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
const uint16_t *end = s + src_size / 2;
while (s < end) {
register uint16_t bgr = *s++;
#if HAVE_BIGENDIAN
*d++ = 255;
*d++ = (bgr & 0x7C00) >> 7;
*d++ = (bgr & 0x3E0) >> 2;
*d++ = (bgr & 0x1F) << 3;
#else
*d++ = (bgr & 0x1F) << 3;
*d++ = (bgr & 0x3E0) >> 2;
*d++ = (bgr & 0x7C00) >> 7;
*d++ = 255;
#endif
}
}
static inline void rgb16to32_c(const uint8_t *src, uint8_t *dst, int src_size)
{
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
const uint16_t *end = s + src_size / 2;
while (s < end) {
register uint16_t bgr = *s++;
#if HAVE_BIGENDIAN
*d++ = 255;
*d++ = (bgr & 0xF800) >> 8;
*d++ = (bgr & 0x7E0) >> 3;
*d++ = (bgr & 0x1F) << 3;
#else
*d++ = (bgr & 0x1F) << 3;
*d++ = (bgr & 0x7E0) >> 3;
*d++ = (bgr & 0xF800) >> 8;
*d++ = 255;
#endif
}
}
static inline void shuffle_bytes_2103_c(const uint8_t *src, uint8_t *dst,
int src_size)
{
int idx = 15 - src_size;
const uint8_t *s = src - idx;
uint8_t *d = dst - idx;
for (; idx < 15; idx += 4) {
register int v = *(const uint32_t *)&s[idx], g = v & 0xff00ff00;
v &= 0xff00ff;
*(uint32_t *)&d[idx] = (v >> 16) + g + (v << 16);
}
}
static inline void rgb24tobgr24_c(const uint8_t *src, uint8_t *dst, int src_size)
{
unsigned i;
for (i = 0; i < src_size; i += 3) {
register uint8_t x = src[i + 2];
dst[i + 1] = src[i + 1];
dst[i + 2] = src[i + 0];
dst[i + 0] = x;
}
}
static inline void yuvPlanartoyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height,
int lumStride, int chromStride,
int dstStride, int vertLumPerChroma)
{
int y, i;
const int chromWidth = width >> 1;
for (y = 0; y < height; y++) {
#if HAVE_FAST_64BIT
uint64_t *ldst = (uint64_t *)dst;
const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
for (i = 0; i < chromWidth; i += 2) {
uint64_t k = yc[0] + (uc[0] << 8) +
(yc[1] << 16) + (vc[0] << 24);
uint64_t l = yc[2] + (uc[1] << 8) +
(yc[3] << 16) + (vc[1] << 24);
*ldst++ = k + (l << 32);
yc += 4;
uc += 2;
vc += 2;
}
#else
int *idst = (int32_t *)dst;
const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
for (i = 0; i < chromWidth; i++) {
#if HAVE_BIGENDIAN
*idst++ = (yc[0] << 24) + (uc[0] << 16) +
(yc[1] << 8) + (vc[0] << 0);
#else
*idst++ = yc[0] + (uc[0] << 8) +
(yc[1] << 16) + (vc[0] << 24);
#endif
yc += 2;
uc++;
vc++;
}
#endif
if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
usrc += chromStride;
vsrc += chromStride;
}
ysrc += lumStride;
dst += dstStride;
}
}
/**
* Height should be a multiple of 2 and width should be a multiple of 16.
* (If this is a problem for anyone then tell me, and I will fix it.)
*/
static inline void yv12toyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride,
int chromStride, int dstStride)
{
//FIXME interpolate chroma
yuvPlanartoyuy2_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
chromStride, dstStride, 2);
}
static inline void yuvPlanartouyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height,
int lumStride, int chromStride,
int dstStride, int vertLumPerChroma)
{
int y, i;
const int chromWidth = width >> 1;
for (y = 0; y < height; y++) {
#if HAVE_FAST_64BIT
uint64_t *ldst = (uint64_t *)dst;
const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
for (i = 0; i < chromWidth; i += 2) {
uint64_t k = uc[0] + (yc[0] << 8) +
(vc[0] << 16) + (yc[1] << 24);
uint64_t l = uc[1] + (yc[2] << 8) +
(vc[1] << 16) + (yc[3] << 24);
*ldst++ = k + (l << 32);
yc += 4;
uc += 2;
vc += 2;
}
#else
int *idst = (int32_t *)dst;
const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;
for (i = 0; i < chromWidth; i++) {
#if HAVE_BIGENDIAN
*idst++ = (uc[0] << 24) + (yc[0] << 16) +
(vc[0] << 8) + (yc[1] << 0);
#else
*idst++ = uc[0] + (yc[0] << 8) +
(vc[0] << 16) + (yc[1] << 24);
#endif
yc += 2;
uc++;
vc++;
}
#endif
if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
usrc += chromStride;
vsrc += chromStride;
}
ysrc += lumStride;
dst += dstStride;
}
}
/**
* Height should be a multiple of 2 and width should be a multiple of 16
* (If this is a problem for anyone then tell me, and I will fix it.)
*/
static inline void yv12touyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride,
int chromStride, int dstStride)
{
//FIXME interpolate chroma
yuvPlanartouyvy_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
chromStride, dstStride, 2);
}
/**
* Width should be a multiple of 16.
*/
static inline void yuv422ptouyvy_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride,
int chromStride, int dstStride)
{
yuvPlanartouyvy_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
chromStride, dstStride, 1);
}
/**
* Width should be a multiple of 16.
*/
static inline void yuv422ptoyuy2_c(const uint8_t *ysrc, const uint8_t *usrc,
const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride,
int chromStride, int dstStride)
{
yuvPlanartoyuy2_c(ysrc, usrc, vsrc, dst, width, height, lumStride,
chromStride, dstStride, 1);
}
/**
* Height should be a multiple of 2 and width should be a multiple of 16.
* (If this is a problem for anyone then tell me, and I will fix it.)
*/
static inline void yuy2toyv12_c(const uint8_t *src, uint8_t *ydst,
uint8_t *udst, uint8_t *vdst,
int width, int height, int lumStride,
int chromStride, int srcStride)
{
int y;
const int chromWidth = width >> 1;
for (y = 0; y < height; y += 2) {
int i;
for (i = 0; i < chromWidth; i++) {
ydst[2 * i + 0] = src[4 * i + 0];
udst[i] = src[4 * i + 1];
ydst[2 * i + 1] = src[4 * i + 2];
vdst[i] = src[4 * i + 3];
}
ydst += lumStride;
src += srcStride;
for (i = 0; i < chromWidth; i++) {
ydst[2 * i + 0] = src[4 * i + 0];
ydst[2 * i + 1] = src[4 * i + 2];
}
udst += chromStride;
vdst += chromStride;
ydst += lumStride;
src += srcStride;
}
}
static inline void planar2x_c(const uint8_t *src, uint8_t *dst, int srcWidth,
int srcHeight, int srcStride, int dstStride)
{
int x, y;
dst[0] = src[0];
// first line
for (x = 0; x < srcWidth - 1; x++) {
dst[2 * x + 1] = (3 * src[x] + src[x + 1]) >> 2;
dst[2 * x + 2] = (src[x] + 3 * src[x + 1]) >> 2;
}
dst[2 * srcWidth - 1] = src[srcWidth - 1];
dst += dstStride;
for (y = 1; y < srcHeight; y++) {
const int mmxSize = 1;
dst[0] = (src[0] * 3 + src[srcStride]) >> 2;
dst[dstStride] = (src[0] + 3 * src[srcStride]) >> 2;
for (x = mmxSize - 1; x < srcWidth - 1; x++) {
dst[2 * x + 1] = (src[x + 0] * 3 + src[x + srcStride + 1]) >> 2;
dst[2 * x + dstStride + 2] = (src[x + 0] + 3 * src[x + srcStride + 1]) >> 2;
dst[2 * x + dstStride + 1] = (src[x + 1] + 3 * src[x + srcStride]) >> 2;
dst[2 * x + 2] = (src[x + 1] * 3 + src[x + srcStride]) >> 2;
}
dst[srcWidth * 2 - 1] = (src[srcWidth - 1] * 3 + src[srcWidth - 1 + srcStride]) >> 2;
dst[srcWidth * 2 - 1 + dstStride] = (src[srcWidth - 1] + 3 * src[srcWidth - 1 + srcStride]) >> 2;
dst += dstStride * 2;
src += srcStride;
}
// last line
dst[0] = src[0];
for (x = 0; x < srcWidth - 1; x++) {
dst[2 * x + 1] = (src[x] * 3 + src[x + 1]) >> 2;
dst[2 * x + 2] = (src[x] + 3 * src[x + 1]) >> 2;
}
dst[2 * srcWidth - 1] = src[srcWidth - 1];
}
/**
* Height should be a multiple of 2 and width should be a multiple of 16.
* (If this is a problem for anyone then tell me, and I will fix it.)
* Chrominance data is only taken from every second line, others are ignored.
* FIXME: Write HQ version.
*/
static inline void uyvytoyv12_c(const uint8_t *src, uint8_t *ydst,
uint8_t *udst, uint8_t *vdst,
int width, int height, int lumStride,
int chromStride, int srcStride)
{
int y;
const int chromWidth = width >> 1;
for (y = 0; y < height; y += 2) {
int i;
for (i = 0; i < chromWidth; i++) {
udst[i] = src[4 * i + 0];
ydst[2 * i + 0] = src[4 * i + 1];
vdst[i] = src[4 * i + 2];
ydst[2 * i + 1] = src[4 * i + 3];
}
ydst += lumStride;
src += srcStride;
for (i = 0; i < chromWidth; i++) {
ydst[2 * i + 0] = src[4 * i + 1];
ydst[2 * i + 1] = src[4 * i + 3];
}
udst += chromStride;
vdst += chromStride;
ydst += lumStride;
src += srcStride;
}
}
/**
* Height should be a multiple of 2 and width should be a multiple of 2.
* (If this is a problem for anyone then tell me, and I will fix it.)
* Chrominance data is only taken from every second line,
* others are ignored in the C version.
* FIXME: Write HQ version.
*/
void rgb24toyv12_c(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
uint8_t *vdst, int width, int height, int lumStride,
int chromStride, int srcStride)
{
int y;
const int chromWidth = width >> 1;
for (y = 0; y < height; y += 2) {
int i;
for (i = 0; i < chromWidth; i++) {
unsigned int b = src[6 * i + 0];
unsigned int g = src[6 * i + 1];
unsigned int r = src[6 * i + 2];
unsigned int Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
unsigned int V = ((RV * r + GV * g + BV * b) >> RGB2YUV_SHIFT) + 128;
unsigned int U = ((RU * r + GU * g + BU * b) >> RGB2YUV_SHIFT) + 128;
udst[i] = U;
vdst[i] = V;
ydst[2 * i] = Y;
b = src[6 * i + 3];
g = src[6 * i + 4];
r = src[6 * i + 5];
Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
ydst[2 * i + 1] = Y;
}
ydst += lumStride;
src += srcStride;
for (i = 0; i < chromWidth; i++) {
unsigned int b = src[6 * i + 0];
unsigned int g = src[6 * i + 1];
unsigned int r = src[6 * i + 2];
unsigned int Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
ydst[2 * i] = Y;
b = src[6 * i + 3];
g = src[6 * i + 4];
r = src[6 * i + 5];
Y = ((RY * r + GY * g + BY * b) >> RGB2YUV_SHIFT) + 16;
ydst[2 * i + 1] = Y;
}
udst += chromStride;
vdst += chromStride;
ydst += lumStride;
src += srcStride;
}
}
static void interleaveBytes_c(const uint8_t *src1, const uint8_t *src2,
uint8_t *dest, int width, int height,
int src1Stride, int src2Stride, int dstStride)
{
int h;
for (h = 0; h < height; h++) {
int w;
for (w = 0; w < width; w++) {
dest[2 * w + 0] = src1[w];
dest[2 * w + 1] = src2[w];
}
dest += dstStride;
src1 += src1Stride;
src2 += src2Stride;
}
}
static inline void vu9_to_vu12_c(const uint8_t *src1, const uint8_t *src2,
uint8_t *dst1, uint8_t *dst2,
int width, int height,
int srcStride1, int srcStride2,
int dstStride1, int dstStride2)
{
int x, y;
int w = width / 2;
int h = height / 2;
for (y = 0; y < h; y++) {
const uint8_t *s1 = src1 + srcStride1 * (y >> 1);
uint8_t *d = dst1 + dstStride1 * y;
for (x = 0; x < w; x++)
d[2 * x] = d[2 * x + 1] = s1[x];
}
for (y = 0; y < h; y++) {
const uint8_t *s2 = src2 + srcStride2 * (y >> 1);
uint8_t *d = dst2 + dstStride2 * y;
for (x = 0; x < w; x++)
d[2 * x] = d[2 * x + 1] = s2[x];
}
}
static inline void yvu9_to_yuy2_c(const uint8_t *src1, const uint8_t *src2,
const uint8_t *src3, uint8_t *dst,
int width, int height,
int srcStride1, int srcStride2,
int srcStride3, int dstStride)
{
int x, y;
int w = width / 2;
int h = height;
for (y = 0; y < h; y++) {
const uint8_t *yp = src1 + srcStride1 * y;
const uint8_t *up = src2 + srcStride2 * (y >> 2);
const uint8_t *vp = src3 + srcStride3 * (y >> 2);
uint8_t *d = dst + dstStride * y;
for (x = 0; x < w; x++) {
const int x2 = x << 2;
d[8 * x + 0] = yp[x2];
d[8 * x + 1] = up[x];
d[8 * x + 2] = yp[x2 + 1];
d[8 * x + 3] = vp[x];
d[8 * x + 4] = yp[x2 + 2];
d[8 * x + 5] = up[x];
d[8 * x + 6] = yp[x2 + 3];
d[8 * x + 7] = vp[x];
}
}
}
static void extract_even_c(const uint8_t *src, uint8_t *dst, int count)
{
dst += count;
src += count * 2;
count = -count;
while (count < 0) {
dst[count] = src[2 * count];
count++;
}
}
static void extract_even2_c(const uint8_t *src, uint8_t *dst0, uint8_t *dst1,
int count)
{
dst0 += count;
dst1 += count;
src += count * 4;
count = -count;
while (count < 0) {
dst0[count] = src[4 * count + 0];
dst1[count] = src[4 * count + 2];
count++;
}
}
static void extract_even2avg_c(const uint8_t *src0, const uint8_t *src1,
uint8_t *dst0, uint8_t *dst1, int count)
{
dst0 += count;
dst1 += count;
src0 += count * 4;
src1 += count * 4;
count = -count;
while (count < 0) {
dst0[count] = (src0[4 * count + 0] + src1[4 * count + 0]) >> 1;
dst1[count] = (src0[4 * count + 2] + src1[4 * count + 2]) >> 1;
count++;
}
}
static void extract_odd2_c(const uint8_t *src, uint8_t *dst0, uint8_t *dst1,
int count)
{
dst0 += count;
dst1 += count;
src += count * 4;
count = -count;
src++;
while (count < 0) {
dst0[count] = src[4 * count + 0];
dst1[count] = src[4 * count + 2];
count++;
}
}
static void extract_odd2avg_c(const uint8_t *src0, const uint8_t *src1,
uint8_t *dst0, uint8_t *dst1, int count)
{
dst0 += count;
dst1 += count;
src0 += count * 4;
src1 += count * 4;
count = -count;
src0++;
src1++;
while (count < 0) {
dst0[count] = (src0[4 * count + 0] + src1[4 * count + 0]) >> 1;
dst1[count] = (src0[4 * count + 2] + src1[4 * count + 2]) >> 1;
count++;
}
}
static void yuyvtoyuv420_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride)
{
int y;
const int chromWidth = -((-width) >> 1);
for (y = 0; y < height; y++) {
extract_even_c(src, ydst, width);
if (y & 1) {
extract_odd2avg_c(src - srcStride, src, udst, vdst, chromWidth);
udst += chromStride;
vdst += chromStride;
}
src += srcStride;
ydst += lumStride;
}
}
static void yuyvtoyuv422_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride)
{
int y;
const int chromWidth = -((-width) >> 1);
for (y = 0; y < height; y++) {
extract_even_c(src, ydst, width);
extract_odd2_c(src, udst, vdst, chromWidth);
src += srcStride;
ydst += lumStride;
udst += chromStride;
vdst += chromStride;
}
}
static void uyvytoyuv420_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride)
{
int y;
const int chromWidth = -((-width) >> 1);
for (y = 0; y < height; y++) {
extract_even_c(src + 1, ydst, width);
if (y & 1) {
extract_even2avg_c(src - srcStride, src, udst, vdst, chromWidth);
udst += chromStride;
vdst += chromStride;
}
src += srcStride;
ydst += lumStride;
}
}
static void uyvytoyuv422_c(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride)
{
int y;
const int chromWidth = -((-width) >> 1);
for (y = 0; y < height; y++) {
extract_even_c(src + 1, ydst, width);
extract_even2_c(src, udst, vdst, chromWidth);
src += srcStride;
ydst += lumStride;
udst += chromStride;
vdst += chromStride;
}
}
static inline void rgb2rgb_init_c(void)
{
rgb15to16 = rgb15to16_c;
rgb15tobgr24 = rgb15tobgr24_c;
rgb15to32 = rgb15to32_c;
rgb16tobgr24 = rgb16tobgr24_c;
rgb16to32 = rgb16to32_c;
rgb16to15 = rgb16to15_c;
rgb24tobgr16 = rgb24tobgr16_c;
rgb24tobgr15 = rgb24tobgr15_c;
rgb24tobgr32 = rgb24tobgr32_c;
rgb32to16 = rgb32to16_c;
rgb32to15 = rgb32to15_c;
rgb32tobgr24 = rgb32tobgr24_c;
rgb24to15 = rgb24to15_c;
rgb24to16 = rgb24to16_c;
rgb24tobgr24 = rgb24tobgr24_c;
shuffle_bytes_2103 = shuffle_bytes_2103_c;
rgb32tobgr16 = rgb32tobgr16_c;
rgb32tobgr15 = rgb32tobgr15_c;
yv12toyuy2 = yv12toyuy2_c;
yv12touyvy = yv12touyvy_c;
yuv422ptoyuy2 = yuv422ptoyuy2_c;
yuv422ptouyvy = yuv422ptouyvy_c;
yuy2toyv12 = yuy2toyv12_c;
planar2x = planar2x_c;
rgb24toyv12 = rgb24toyv12_c;
interleaveBytes = interleaveBytes_c;
vu9_to_vu12 = vu9_to_vu12_c;
yvu9_to_yuy2 = yvu9_to_yuy2_c;
uyvytoyuv420 = uyvytoyuv420_c;
uyvytoyuv422 = uyvytoyuv422_c;
yuyvtoyuv420 = yuyvtoyuv420_c;
yuyvtoyuv422 = yuyvtoyuv422_c;
}