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ffmpeg/libswscale/rgb2rgb.c
Diego Biurrun 4fadc2b4f1 Add official GPL header to make license explicit as discussed on ffmpeg-devel. 
Originally committed as revision 19709 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
2006-09-06 10:24:19 +00:00

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/*
*
* rgb2rgb.c, Software RGB to RGB convertor
* pluralize by Software PAL8 to RGB convertor
* Software YUV to YUV convertor
* Software YUV to RGB convertor
* Written by Nick Kurshev.
* palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include "config.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
#include "x86_cpu.h"
#include "bswap.h"
#ifdef USE_FASTMEMCPY
#include "libvo/fastmemcpy.h"
#endif
#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
void (*rgb24to32)(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 (*rgb32to24)(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 (*rgb15to24)(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 (*rgb16to24)(const uint8_t *src,uint8_t *dst,long src_size);
void (*rgb16to32)(const uint8_t *src,uint8_t *dst,long src_size);
//void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
void (*rgb24tobgr24)(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 (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
//void (*rgb32tobgr24)(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 (*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)(uint8_t *src1, 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);
#if defined(ARCH_X86) || defined(ARCH_X86_64)
static const uint64_t mmx_null __attribute__((aligned(8))) = 0x0000000000000000ULL;
static const uint64_t mmx_one __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
static const uint64_t mask32b attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
static const uint64_t mask32g attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
static const uint64_t mask32r attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
static const uint64_t mask32 __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
static const uint64_t mask3216br __attribute__((aligned(8)))=0x00F800F800F800F8ULL;
static const uint64_t mask3216g __attribute__((aligned(8)))=0x0000FC000000FC00ULL;
static const uint64_t mask3215g __attribute__((aligned(8)))=0x0000F8000000F800ULL;
static const uint64_t mul3216 __attribute__((aligned(8))) = 0x2000000420000004ULL;
static const uint64_t mul3215 __attribute__((aligned(8))) = 0x2000000820000008ULL;
static const uint64_t mask24b attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
static const uint64_t mask24g attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
static const uint64_t mask24r attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
static const uint64_t mask24l __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
static const uint64_t mask24h __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
static const uint64_t mask24hh __attribute__((aligned(8))) = 0xffff000000000000ULL;
static const uint64_t mask24hhh __attribute__((aligned(8))) = 0xffffffff00000000ULL;
static const uint64_t mask24hhhh __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
static const uint64_t mask15b __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
static const uint64_t mask15s __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
static const uint64_t mask15g __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
static const uint64_t mask15r __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
#define mask16b mask15b
static const uint64_t mask16g __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
static const uint64_t mask16r __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
static const uint64_t red_16mask __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
static const uint64_t green_16mask __attribute__((aligned(8)))= 0x000007e0000007e0ULL;
static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
static const uint64_t red_15mask __attribute__((aligned(8))) = 0x00007c000000f800ULL;
static const uint64_t green_15mask __attribute__((aligned(8)))= 0x000003e0000007e0ULL;
static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
#ifdef FAST_BGR2YV12
static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
#else
static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
#endif
static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
#if 0
static volatile uint64_t __attribute__((aligned(8))) b5Dither;
static volatile uint64_t __attribute__((aligned(8))) g5Dither;
static volatile uint64_t __attribute__((aligned(8))) g6Dither;
static volatile uint64_t __attribute__((aligned(8))) r5Dither;
static uint64_t __attribute__((aligned(8))) dither4[2]={
0x0103010301030103LL,
0x0200020002000200LL,};
static uint64_t __attribute__((aligned(8))) dither8[2]={
0x0602060206020602LL,
0x0004000400040004LL,};
#endif
#endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
#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 version therse no 3DNOW+MMX2 one
//Plain C versions
#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#undef HAVE_SSE2
#define RENAME(a) a ## _C
#include "rgb2rgb_template.c"
#if defined(ARCH_X86) || defined(ARCH_X86_64)
//MMX versions
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#undef HAVE_SSE2
#define RENAME(a) a ## _MMX
#include "rgb2rgb_template.c"
//MMX2 versions
#undef RENAME
#define HAVE_MMX
#define HAVE_MMX2
#undef HAVE_3DNOW
#undef HAVE_SSE2
#define RENAME(a) a ## _MMX2
#include "rgb2rgb_template.c"
//3DNOW versions
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#define HAVE_3DNOW
#undef HAVE_SSE2
#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
32bit c version, and and&add trick by Michael Niedermayer
*/
void sws_rgb2rgb_init(int flags){
#if defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX)
if(flags & SWS_CPU_CAPS_MMX2){
rgb15to16= rgb15to16_MMX2;
rgb15to24= rgb15to24_MMX2;
rgb15to32= rgb15to32_MMX2;
rgb16to24= rgb16to24_MMX2;
rgb16to32= rgb16to32_MMX2;
rgb16to15= rgb16to15_MMX2;
rgb24to16= rgb24to16_MMX2;
rgb24to15= rgb24to15_MMX2;
rgb24to32= rgb24to32_MMX2;
rgb32to16= rgb32to16_MMX2;
rgb32to15= rgb32to15_MMX2;
rgb32to24= rgb32to24_MMX2;
rgb24tobgr15= rgb24tobgr15_MMX2;
rgb24tobgr16= rgb24tobgr16_MMX2;
rgb24tobgr24= rgb24tobgr24_MMX2;
rgb32tobgr32= rgb32tobgr32_MMX2;
rgb32tobgr16= rgb32tobgr16_MMX2;
rgb32tobgr15= rgb32tobgr15_MMX2;
yv12toyuy2= yv12toyuy2_MMX2;
yv12touyvy= yv12touyvy_MMX2;
yuv422ptoyuy2= yuv422ptoyuy2_MMX2;
yuy2toyv12= yuy2toyv12_MMX2;
// uyvytoyv12= uyvytoyv12_MMX2;
// yvu9toyv12= yvu9toyv12_MMX2;
planar2x= planar2x_MMX2;
rgb24toyv12= rgb24toyv12_MMX2;
interleaveBytes= interleaveBytes_MMX2;
vu9_to_vu12= vu9_to_vu12_MMX2;
yvu9_to_yuy2= yvu9_to_yuy2_MMX2;
}else if(flags & SWS_CPU_CAPS_3DNOW){
rgb15to16= rgb15to16_3DNOW;
rgb15to24= rgb15to24_3DNOW;
rgb15to32= rgb15to32_3DNOW;
rgb16to24= rgb16to24_3DNOW;
rgb16to32= rgb16to32_3DNOW;
rgb16to15= rgb16to15_3DNOW;
rgb24to16= rgb24to16_3DNOW;
rgb24to15= rgb24to15_3DNOW;
rgb24to32= rgb24to32_3DNOW;
rgb32to16= rgb32to16_3DNOW;
rgb32to15= rgb32to15_3DNOW;
rgb32to24= rgb32to24_3DNOW;
rgb24tobgr15= rgb24tobgr15_3DNOW;
rgb24tobgr16= rgb24tobgr16_3DNOW;
rgb24tobgr24= rgb24tobgr24_3DNOW;
rgb32tobgr32= rgb32tobgr32_3DNOW;
rgb32tobgr16= rgb32tobgr16_3DNOW;
rgb32tobgr15= rgb32tobgr15_3DNOW;
yv12toyuy2= yv12toyuy2_3DNOW;
yv12touyvy= yv12touyvy_3DNOW;
yuv422ptoyuy2= yuv422ptoyuy2_3DNOW;
yuy2toyv12= yuy2toyv12_3DNOW;
// uyvytoyv12= uyvytoyv12_3DNOW;
// yvu9toyv12= yvu9toyv12_3DNOW;
planar2x= planar2x_3DNOW;
rgb24toyv12= rgb24toyv12_3DNOW;
interleaveBytes= interleaveBytes_3DNOW;
vu9_to_vu12= vu9_to_vu12_3DNOW;
yvu9_to_yuy2= yvu9_to_yuy2_3DNOW;
}else if(flags & SWS_CPU_CAPS_MMX){
rgb15to16= rgb15to16_MMX;
rgb15to24= rgb15to24_MMX;
rgb15to32= rgb15to32_MMX;
rgb16to24= rgb16to24_MMX;
rgb16to32= rgb16to32_MMX;
rgb16to15= rgb16to15_MMX;
rgb24to16= rgb24to16_MMX;
rgb24to15= rgb24to15_MMX;
rgb24to32= rgb24to32_MMX;
rgb32to16= rgb32to16_MMX;
rgb32to15= rgb32to15_MMX;
rgb32to24= rgb32to24_MMX;
rgb24tobgr15= rgb24tobgr15_MMX;
rgb24tobgr16= rgb24tobgr16_MMX;
rgb24tobgr24= rgb24tobgr24_MMX;
rgb32tobgr32= rgb32tobgr32_MMX;
rgb32tobgr16= rgb32tobgr16_MMX;
rgb32tobgr15= rgb32tobgr15_MMX;
yv12toyuy2= yv12toyuy2_MMX;
yv12touyvy= yv12touyvy_MMX;
yuv422ptoyuy2= yuv422ptoyuy2_MMX;
yuy2toyv12= yuy2toyv12_MMX;
// uyvytoyv12= uyvytoyv12_MMX;
// yvu9toyv12= yvu9toyv12_MMX;
planar2x= planar2x_MMX;
rgb24toyv12= rgb24toyv12_MMX;
interleaveBytes= interleaveBytes_MMX;
vu9_to_vu12= vu9_to_vu12_MMX;
yvu9_to_yuy2= yvu9_to_yuy2_MMX;
}else
#endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
{
rgb15to16= rgb15to16_C;
rgb15to24= rgb15to24_C;
rgb15to32= rgb15to32_C;
rgb16to24= rgb16to24_C;
rgb16to32= rgb16to32_C;
rgb16to15= rgb16to15_C;
rgb24to16= rgb24to16_C;
rgb24to15= rgb24to15_C;
rgb24to32= rgb24to32_C;
rgb32to16= rgb32to16_C;
rgb32to15= rgb32to15_C;
rgb32to24= rgb32to24_C;
rgb24tobgr15= rgb24tobgr15_C;
rgb24tobgr16= rgb24tobgr16_C;
rgb24tobgr24= rgb24tobgr24_C;
rgb32tobgr32= rgb32tobgr32_C;
rgb32tobgr16= rgb32tobgr16_C;
rgb32tobgr15= rgb32tobgr15_C;
yv12toyuy2= yv12toyuy2_C;
yv12touyvy= yv12touyvy_C;
yuv422ptoyuy2= yuv422ptoyuy2_C;
yuy2toyv12= yuy2toyv12_C;
// uyvytoyv12= uyvytoyv12_C;
// yvu9toyv12= yvu9toyv12_C;
planar2x= planar2x_C;
rgb24toyv12= rgb24toyv12_C;
interleaveBytes= interleaveBytes_C;
vu9_to_vu12= vu9_to_vu12_C;
yvu9_to_yuy2= yvu9_to_yuy2_C;
}
}
/**
* Pallete is assumed to contain bgr32
*/
void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
for(i=0; i<num_pixels; i++)
((unsigned *)dst)[i] = ((unsigned *)palette)[ src[i] ];
*/
for(i=0; i<num_pixels; i++)
{
#ifdef WORDS_BIGENDIAN
dst[3]= palette[ src[i]*4+2 ];
dst[2]= palette[ src[i]*4+1 ];
dst[1]= palette[ src[i]*4+0 ];
#else
//FIXME slow?
dst[0]= palette[ src[i]*4+2 ];
dst[1]= palette[ src[i]*4+1 ];
dst[2]= palette[ src[i]*4+0 ];
//dst[3]= 0; /* do we need this cleansing? */
#endif
dst+= 4;
}
}
void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for(i=0; i<num_pixels; i++)
{
#ifdef WORDS_BIGENDIAN
dst[3]= palette[ src[i]*4+0 ];
dst[2]= palette[ src[i]*4+1 ];
dst[1]= palette[ src[i]*4+2 ];
#else
//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]= 0; /* do we need this cleansing? */
#endif
dst+= 4;
}
}
/**
* Pallete is assumed to contain bgr32
*/
void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
writes 1 byte o much and might cause alignment issues on some architectures?
for(i=0; i<num_pixels; i++)
((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
*/
for(i=0; i<num_pixels; i++)
{
//FIXME slow?
dst[0]= palette[ src[i]*4+2 ];
dst[1]= palette[ src[i]*4+1 ];
dst[2]= palette[ src[i]*4+0 ];
dst+= 3;
}
}
void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
writes 1 byte o much and might cause alignment issues on some architectures?
for(i=0; i<num_pixels; i++)
((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[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] = ((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(((uint16_t *)palette)[ src[i] ]);
}
/**
* Pallete 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] = ((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(((uint16_t *)palette)[ src[i] ]);
}
void rgb32tobgr24(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++)
{
#ifdef WORDS_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 rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
{
long i;
for(i=0; 3*i<src_size; i++)
{
#ifdef WORDS_BIGENDIAN
/* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
dst[4*i + 0] = 0;
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] = 0;
#endif
}
}
void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = (uint8_t *)dst;
const uint16_t *s = (uint16_t *)src;
end = s + src_size/2;
while(s < end)
{
register uint16_t bgr;
bgr = *s++;
#ifdef WORDS_BIGENDIAN
*d++ = 0;
*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++ = 0;
#endif
}
}
void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = (uint8_t *)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 b,g,r;
register uint16_t rgb;
rgb = src[2*i];
r = rgb&0x1F;
g = (rgb&0x7E0)>>5;
b = (rgb&0xF800)>>11;
dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<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 b,g,r;
register uint16_t rgb;
rgb = src[2*i];
r = rgb&0x1F;
g = (rgb&0x7E0)>>5;
b = (rgb&0xF800)>>11;
dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
}
}
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = (uint8_t *)dst;
const uint16_t *s = (const uint16_t *)src;
end = s + src_size/2;
while(s < end)
{
register uint16_t bgr;
bgr = *s++;
#ifdef WORDS_BIGENDIAN
*d++ = 0;
*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++ = 0;
#endif
}
}
void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
{
const uint16_t *end;
uint8_t *d = (uint8_t *)dst;
const uint16_t *s = (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 b,g,r;
register uint16_t rgb;
rgb = src[2*i];
r = rgb&0x1F;
g = (rgb&0x3E0)>>5;
b = (rgb&0x7C00)>>10;
dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<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 b,g,r;
register uint16_t rgb;
rgb = src[2*i];
r = rgb&0x1F;
g = (rgb&0x3E0)>>5;
b = (rgb&0x7C00)>>10;
dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
}
}
void rgb8tobgr8(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);
}
}
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