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FFmpeg/libswscale/rgb2rgb.c
Stefano Sabatini 82e5f86bd5 Implement shuffle_bytes_abcd() functions and use them for shuffling 
bytes when converting between RGB32 variants.

In particular fix the argb -> rgba and abgr -> bgra conversions.

See the thread:
Subject: [FFmpeg-devel] [RFC] RGB32 / BGR32 ethernal bug
Date: Tue, 26 Jan 2010 01:06:18 +0100

Originally committed as revision 30501 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
2010-02-03 23:46:00 +00:00

465 lines
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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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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
*
* The C code (not assembly, MMX, ...) of this file can be used
* under the LGPL license.
*/
#include <inttypes.h>
#include "config.h"
#include "libavutil/x86_cpu.h"
#include "libavutil/bswap.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
#define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32to16)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32to15)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb15to16)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb15to32)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb16to15)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb16to32)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24to16)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24to15)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
long width, long height,
long lumStride, long chromStride, long dstStride);
void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
long width, long height,
long lumStride, long chromStride, long dstStride);
void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
long width, long height,
long lumStride, long chromStride, long dstStride);
void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
long width, long height,
long lumStride, long chromStride, long dstStride);
void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
long width, long height,
long lumStride, long chromStride, long srcStride);
void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
long width, long height,
long lumStride, long chromStride, long srcStride);
void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
long srcStride, long dstStride);
void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
long width, long height, long src1Stride,
long src2Stride, long dstStride);
void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
uint8_t *dst1, uint8_t *dst2,
long width, long height,
long srcStride1, long srcStride2,
long dstStride1, long dstStride2);
void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
uint8_t *dst,
long width, long height,
long srcStride1, long srcStride2,
long srcStride3, long dstStride);
void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
long width, long height,
long lumStride, long chromStride, long srcStride);
void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
long width, long height,
long lumStride, long chromStride, long srcStride);
void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
long width, long height,
long lumStride, long chromStride, long srcStride);
void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
long width, long height,
long lumStride, long chromStride, long srcStride);
#if ARCH_X86 && CONFIG_GPL
DECLARE_ASM_CONST(8, uint64_t, mmx_null) = 0x0000000000000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_one) = 0xFFFFFFFFFFFFFFFFULL;
DECLARE_ASM_CONST(8, uint64_t, mask32b) = 0x000000FF000000FFULL;
DECLARE_ASM_CONST(8, uint64_t, mask32g) = 0x0000FF000000FF00ULL;
DECLARE_ASM_CONST(8, uint64_t, mask32r) = 0x00FF000000FF0000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask32a) = 0xFF000000FF000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask32) = 0x00FFFFFF00FFFFFFULL;
DECLARE_ASM_CONST(8, uint64_t, mask3216br) = 0x00F800F800F800F8ULL;
DECLARE_ASM_CONST(8, uint64_t, mask3216g) = 0x0000FC000000FC00ULL;
DECLARE_ASM_CONST(8, uint64_t, mask3215g) = 0x0000F8000000F800ULL;
DECLARE_ASM_CONST(8, uint64_t, mul3216) = 0x2000000420000004ULL;
DECLARE_ASM_CONST(8, uint64_t, mul3215) = 0x2000000820000008ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24b) = 0x00FF0000FF0000FFULL;
DECLARE_ASM_CONST(8, uint64_t, mask24g) = 0xFF0000FF0000FF00ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24r) = 0x0000FF0000FF0000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24l) = 0x0000000000FFFFFFULL;
DECLARE_ASM_CONST(8, uint64_t, mask24h) = 0x0000FFFFFF000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24hh) = 0xffff000000000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24hhh) = 0xffffffff00000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24hhhh) = 0xffffffffffff0000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15b) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
DECLARE_ASM_CONST(8, uint64_t, mask15rg) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
DECLARE_ASM_CONST(8, uint64_t, mask15s) = 0xFFE0FFE0FFE0FFE0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15g) = 0x03E003E003E003E0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15r) = 0x7C007C007C007C00ULL;
#define mask16b mask15b
DECLARE_ASM_CONST(8, uint64_t, mask16g) = 0x07E007E007E007E0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask16r) = 0xF800F800F800F800ULL;
DECLARE_ASM_CONST(8, uint64_t, red_16mask) = 0x0000f8000000f800ULL;
DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
DECLARE_ASM_CONST(8, uint64_t, blue_16mask) = 0x0000001f0000001fULL;
DECLARE_ASM_CONST(8, uint64_t, red_15mask) = 0x00007c0000007c00ULL;
DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
DECLARE_ASM_CONST(8, uint64_t, blue_15mask) = 0x0000001f0000001fULL;
#endif /* ARCH_X86 */
#define RGB2YUV_SHIFT 8
#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))
//Note: We have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW + MMX2 one.
//plain C versions
#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_AMD3DNOW
#undef HAVE_SSE2
#define HAVE_MMX 0
#define HAVE_MMX2 0
#define HAVE_AMD3DNOW 0
#define HAVE_SSE2 0
#define RENAME(a) a ## _C
#include "rgb2rgb_template.c"
#if ARCH_X86 && CONFIG_GPL
//MMX versions
#undef RENAME
#undef HAVE_MMX
#define HAVE_MMX 1
#define RENAME(a) a ## _MMX
#include "rgb2rgb_template.c"
//MMX2 versions
#undef RENAME
#undef HAVE_MMX2
#define HAVE_MMX2 1
#define RENAME(a) a ## _MMX2
#include "rgb2rgb_template.c"
//3DNOW versions
#undef RENAME
#undef HAVE_MMX2
#undef HAVE_AMD3DNOW
#define HAVE_MMX2 0
#define HAVE_AMD3DNOW 1
#define RENAME(a) a ## _3DNOW
#include "rgb2rgb_template.c"
#endif //ARCH_X86 || ARCH_X86_64
/*
RGB15->RGB16 original by Strepto/Astral
ported to gcc & bugfixed : A'rpi
MMX2, 3DNOW optimization by Nick Kurshev
32-bit C version, and and&add trick by Michael Niedermayer
*/
void sws_rgb2rgb_init(int flags)
{
#if (HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX) && CONFIG_GPL
if (flags & SWS_CPU_CAPS_MMX2)
rgb2rgb_init_MMX2();
else if (flags & SWS_CPU_CAPS_3DNOW)
rgb2rgb_init_3DNOW();
else if (flags & SWS_CPU_CAPS_MMX)
rgb2rgb_init_MMX();
else
#endif /* HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX */
rgb2rgb_init_C();
}
/**
* Convert the palette to the same packet 32-bit format as the palette
*/
void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
}
/**
* Palette format: ABCD -> dst format: ABC
*/
void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++) {
//FIXME slow?
dst[0]= palette[src[i]*4+0];
dst[1]= palette[src[i]*4+1];
dst[2]= palette[src[i]*4+2];
dst+= 3;
}
}
/**
* Palette is assumed to contain BGR16, see rgb32to16 to convert the palette.
*/
void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
}
void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
}
/**
* Palette is assumed to contain BGR15, see rgb32to15 to convert the palette.
*/
void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
}
void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
}
void rgb32to24(const uint8_t *src, uint8_t *dst, long src_size)
{
long i;
long 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, long src_size)
{
long 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, long src_size)
{
const uint16_t *end;
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
end = s + src_size/2;
while (s < end) {
register uint16_t bgr;
bgr = *s++;
#if HAVE_BIGENDIAN
*d++ = 255;
*d++ = (bgr&0x1F)<<3;
*d++ = (bgr&0x7E0)>>3;
*d++ = (bgr&0xF800)>>8;
#else
*d++ = (bgr&0xF800)>>8;
*d++ = (bgr&0x7E0)>>3;
*d++ = (bgr&0x1F)<<3;
*d++ = 255;
#endif
}
}
void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
end = s + src_size/2;
while (s < end) {
register uint16_t bgr;
bgr = *s++;
*d++ = (bgr&0xF800)>>8;
*d++ = (bgr&0x7E0)>>3;
*d++ = (bgr&0x1F)<<3;
}
}
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
{
long i;
long 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, long src_size)
{
long i;
long 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, long src_size)
{
const uint16_t *end;
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
end = s + src_size/2;
while (s < end) {
register uint16_t bgr;
bgr = *s++;
#if HAVE_BIGENDIAN
*d++ = 255;
*d++ = (bgr&0x1F)<<3;
*d++ = (bgr&0x3E0)>>2;
*d++ = (bgr&0x7C00)>>7;
#else
*d++ = (bgr&0x7C00)>>7;
*d++ = (bgr&0x3E0)>>2;
*d++ = (bgr&0x1F)<<3;
*d++ = 255;
#endif
}
}
void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = dst;
const uint16_t *s = (const uint16_t *)src;
end = s + src_size/2;
while (s < end) {
register uint16_t bgr;
bgr = *s++;
*d++ = (bgr&0x7C00)>>7;
*d++ = (bgr&0x3E0)>>2;
*d++ = (bgr&0x1F)<<3;
}
}
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
{
long i;
long 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, long src_size)
{
long i;
long num_pixels = src_size >> 1;
for (i=0; i<num_pixels; i++) {
unsigned br;
unsigned rgb = ((const uint16_t*)src)[i];
br = rgb&0x7c1F;
((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
}
}
void bgr8torgb8(const uint8_t *src, uint8_t *dst, long src_size)
{
long i;
long num_pixels = src_size;
for (i=0; i<num_pixels; i++) {
unsigned b,g,r;
register uint8_t rgb;
rgb = src[i];
r = (rgb&0x07);
g = (rgb&0x38)>>3;
b = (rgb&0xC0)>>6;
dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
}
}
#define DEFINE_SHUFFLE_BYTES(a, b, c, d) \
void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
{ \
long 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(2, 1, 0, 3);
DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
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