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FFmpeg/libswscale/rgb2rgb.c
Michael Niedermayer a37fd7f957 sws: Update rgb24toyv12_c() to user supplied rgb2yuv tables 
As the function arguments change, we also change the function name
to ensure that anyone using this (non public) function doesnt end
with hard to debug crashes. The new name also has a proper prefix.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-04-15 03:08:37 +02:00

391 lines
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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)
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include "libavutil/attributes.h"
#include "libavutil/bswap.h"
#include "config.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);
void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
void (*yv12toyuy2)(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);
void (*yv12touyvy)(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);
void (*yuv422ptoyuy2)(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);
void (*yuv422ptouyvy)(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);
void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
uint8_t *udst, uint8_t *vdst,
int width, int height,
int lumStride, int chromStride, int srcStride);
void (*ff_rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
uint8_t *udst, uint8_t *vdst,
int width, int height,
int lumStride, int chromStride, int srcStride,
int32_t *rgb2yuv);
void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
int srcStride, int dstStride);
void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
int width, int height, int src1Stride,
int src2Stride, int dstStride);
void (*vu9_to_vu12)(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);
void (*yvu9_to_yuy2)(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);
void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
#define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
//plain C versions
#include "rgb2rgb_template.c"
/*
* RGB15->RGB16 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
*/
av_cold void sws_rgb2rgb_init(void)
{
rgb2rgb_init_c();
if (HAVE_MMX)
rgb2rgb_init_x86();
}
void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
{
int i, num_pixels = src_size >> 2;
for (i = 0; i < num_pixels; i++) {
#if HAVE_BIGENDIAN
/* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
dst[3 * i + 0] = src[4 * i + 1];
dst[3 * i + 1] = src[4 * i + 2];
dst[3 * i + 2] = src[4 * i + 3];
#else
dst[3 * i + 0] = src[4 * i + 2];
dst[3 * i + 1] = src[4 * i + 1];
dst[3 * i + 2] = src[4 * i + 0];
#endif
}
}
void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
{
int i;
for (i = 0; 3 * i < src_size; i++) {
#if HAVE_BIGENDIAN
/* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
dst[4 * i + 0] = 255;
dst[4 * i + 1] = src[3 * i + 0];
dst[4 * i + 2] = src[3 * i + 1];
dst[4 * i + 3] = src[3 * i + 2];
#else
dst[4 * i + 0] = src[3 * i + 2];
dst[4 * i + 1] = src[3 * i + 1];
dst[4 * i + 2] = src[3 * i + 0];
dst[4 * i + 3] = 255;
#endif
}
}
void rgb16tobgr32(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&0x001F)<<3) | ((bgr&0x001F)>> 2);
*d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
*d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
#else
*d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
*d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
*d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
*d++ = 255;
#endif
}
}
void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t rgb, r, g, b;
uint16_t *d = (uint16_t *)dst;
const uint16_t *s = (const uint16_t *)src;
const uint16_t *end = s + src_size / 2;
while (s < end) {
rgb = *s++;
r = rgb & 0xF00;
g = rgb & 0x0F0;
b = rgb & 0x00F;
r = (r << 3) | ((r & 0x800) >> 1);
g = (g << 2) | ((g & 0x080) >> 2);
b = (b << 1) | ( b >> 3);
*d++ = r | g | b;
}
}
void rgb16to24(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&0xF800)>>8) | ((bgr&0xF800)>>13);
*d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
*d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
}
}
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
{
int i, num_pixels = src_size >> 1;
for (i = 0; i < num_pixels; i++) {
unsigned rgb = ((const uint16_t *)src)[i];
((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
}
}
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
{
int i, num_pixels = src_size >> 1;
for (i = 0; i < num_pixels; i++) {
unsigned rgb = ((const uint16_t *)src)[i];
((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
}
}
void rgb15tobgr32(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&0x001F)<<3) | ((bgr&0x001F)>> 2);
*d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
*d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
#else
*d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
*d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
*d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
*d++ = 255;
#endif
}
}
void rgb15to24(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&0x7C00)>>7) | ((bgr&0x7C00)>>12);
*d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
*d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
}
}
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
{
int i, num_pixels = src_size >> 1;
for (i = 0; i < num_pixels; i++) {
unsigned rgb = ((const uint16_t *)src)[i];
((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
}
}
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
{
int i, num_pixels = src_size >> 1;
for (i = 0; i < num_pixels; i++) {
unsigned rgb = ((const uint16_t *)src)[i];
unsigned br = rgb & 0x7C1F;
((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
}
}
void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
{
uint16_t *d = (uint16_t *)dst;
uint16_t *s = (uint16_t *)src;
int i, num_pixels = src_size >> 1;
for (i = 0; i < num_pixels; i++) {
unsigned rgb = s[i];
d[i] = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
}
}
#define DEFINE_SHUFFLE_BYTES(a, b, c, d) \
void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src, \
uint8_t *dst, int src_size) \
{ \
int i; \
\
for (i = 0; i < src_size; i += 4) { \
dst[i + 0] = src[i + a]; \
dst[i + 1] = src[i + b]; \
dst[i + 2] = src[i + c]; \
dst[i + 3] = src[i + d]; \
} \
}
DEFINE_SHUFFLE_BYTES(0, 3, 2, 1)
DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)
#define DEFINE_RGB48TOBGR48(need_bswap, swap) \
void rgb48tobgr48_ ## need_bswap(const uint8_t *src, \
uint8_t *dst, int src_size) \
{ \
uint16_t *d = (uint16_t *)dst; \
uint16_t *s = (uint16_t *)src; \
int i, num_pixels = src_size >> 1; \
\
for (i = 0; i < num_pixels; i += 3) { \
d[i ] = swap ? av_bswap16(s[i + 2]) : s[i + 2]; \
d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1]; \
d[i + 2] = swap ? av_bswap16(s[i ]) : s[i ]; \
} \
}
DEFINE_RGB48TOBGR48(nobswap, 0)
DEFINE_RGB48TOBGR48(bswap, 1)
#define DEFINE_RGB64TOBGR48(need_bswap, swap) \
void rgb64tobgr48_ ## need_bswap(const uint8_t *src, \
uint8_t *dst, int src_size) \
{ \
uint16_t *d = (uint16_t *)dst; \
uint16_t *s = (uint16_t *)src; \
int i, num_pixels = src_size >> 3; \
\
for (i = 0; i < num_pixels; i++) { \
d[3 * i ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
d[3 * i + 2] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
} \
}
DEFINE_RGB64TOBGR48(nobswap, 0)
DEFINE_RGB64TOBGR48(bswap, 1)
#define DEFINE_RGB64TO48(need_bswap, swap) \
void rgb64to48_ ## need_bswap(const uint8_t *src, \
uint8_t *dst, int src_size) \
{ \
uint16_t *d = (uint16_t *)dst; \
uint16_t *s = (uint16_t *)src; \
int i, num_pixels = src_size >> 3; \
\
for (i = 0; i < num_pixels; i++) { \
d[3 * i ] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
} \
}
DEFINE_RGB64TO48(nobswap, 0)
DEFINE_RGB64TO48(bswap, 1)
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