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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);

        }

}