git.sesse.net Git - ffmpeg/blob - libswscale/rgb2rgb.c

   1 /*
   2  *
   3  *  rgb2rgb.c, Software RGB to RGB convertor
   4  *  pluralize by Software PAL8 to RGB convertor
   5  *               Software YUV to YUV convertor
   6  *               Software YUV to RGB convertor
   7  *  Written by Nick Kurshev.
   8  *  palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
   9  *
  10  * This file is part of FFmpeg.
  11  *
  12  * FFmpeg is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * FFmpeg is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with FFmpeg; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  25  */
  26 #include <inttypes.h>
  27 #include "config.h"
  28 #include "rgb2rgb.h"
  29 #include "swscale.h"
  30 #include "swscale_internal.h"
  31 #include "x86_cpu.h"
  32 #include "bswap.h"
  33 #ifdef USE_FASTMEMCPY
  34 #include "libvo/fastmemcpy.h"
  35 #endif
  36
  37 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
  38
  39 void (*rgb24to32)(const uint8_t *src,uint8_t *dst,long src_size);
  40 void (*rgb24to16)(const uint8_t *src,uint8_t *dst,long src_size);
  41 void (*rgb24to15)(const uint8_t *src,uint8_t *dst,long src_size);
  42 void (*rgb32to24)(const uint8_t *src,uint8_t *dst,long src_size);
  43 void (*rgb32to16)(const uint8_t *src,uint8_t *dst,long src_size);
  44 void (*rgb32to15)(const uint8_t *src,uint8_t *dst,long src_size);
  45 void (*rgb15to16)(const uint8_t *src,uint8_t *dst,long src_size);
  46 void (*rgb15to24)(const uint8_t *src,uint8_t *dst,long src_size);
  47 void (*rgb15to32)(const uint8_t *src,uint8_t *dst,long src_size);
  48 void (*rgb16to15)(const uint8_t *src,uint8_t *dst,long src_size);
  49 void (*rgb16to24)(const uint8_t *src,uint8_t *dst,long src_size);
  50 void (*rgb16to32)(const uint8_t *src,uint8_t *dst,long src_size);
  51 //void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
  52 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  53 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
  54 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
  55 void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
  56 //void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
  57 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
  58 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
  59
  60 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  61         long width, long height,
  62         long lumStride, long chromStride, long dstStride);
  63 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  64         long width, long height,
  65         long lumStride, long chromStride, long dstStride);
  66 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
  67         long width, long height,
  68         long lumStride, long chromStride, long dstStride);
  69 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
  70         long width, long height,
  71         long lumStride, long chromStride, long srcStride);
  72 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
  73         long width, long height,
  74         long lumStride, long chromStride, long srcStride);
  75 void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
  76         long srcStride, long dstStride);
  77 void (*interleaveBytes)(uint8_t *src1, uint8_t *src2, uint8_t *dst,
  78                             long width, long height, long src1Stride,
  79                             long src2Stride, long dstStride);
  80 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
  81                         uint8_t *dst1, uint8_t *dst2,
  82                         long width, long height,
  83                         long srcStride1, long srcStride2,
  84                         long dstStride1, long dstStride2);
  85 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
  86                         uint8_t *dst,
  87                         long width, long height,
  88                         long srcStride1, long srcStride2,
  89                         long srcStride3, long dstStride);
  90
  91 #if defined(ARCH_X86) || defined(ARCH_X86_64)
  92 static const uint64_t mmx_null  __attribute__((aligned(8))) = 0x0000000000000000ULL;
  93 static const uint64_t mmx_one   __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
  94 static const uint64_t mask32b  attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
  95 static const uint64_t mask32g  attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
  96 static const uint64_t mask32r  attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
  97 static const uint64_t mask32   __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
  98 static const uint64_t mask3216br __attribute__((aligned(8)))=0x00F800F800F800F8ULL;
  99 static const uint64_t mask3216g  __attribute__((aligned(8)))=0x0000FC000000FC00ULL;
 100 static const uint64_t mask3215g  __attribute__((aligned(8)))=0x0000F8000000F800ULL;
 101 static const uint64_t mul3216  __attribute__((aligned(8))) = 0x2000000420000004ULL;
 102 static const uint64_t mul3215  __attribute__((aligned(8))) = 0x2000000820000008ULL;
 103 static const uint64_t mask24b  attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
 104 static const uint64_t mask24g  attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
 105 static const uint64_t mask24r  attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
 106 static const uint64_t mask24l  __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
 107 static const uint64_t mask24h  __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
 108 static const uint64_t mask24hh  __attribute__((aligned(8))) = 0xffff000000000000ULL;
 109 static const uint64_t mask24hhh  __attribute__((aligned(8))) = 0xffffffff00000000ULL;
 110 static const uint64_t mask24hhhh  __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
 111 static const uint64_t mask15b  __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
 112 static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
 113 static const uint64_t mask15s  __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
 114 static const uint64_t mask15g  __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
 115 static const uint64_t mask15r  __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
 116 #define mask16b mask15b
 117 static const uint64_t mask16g  __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
 118 static const uint64_t mask16r  __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
 119 static const uint64_t red_16mask  __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
 120 static const uint64_t green_16mask __attribute__((aligned(8)))= 0x000007e0000007e0ULL;
 121 static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
 122 static const uint64_t red_15mask  __attribute__((aligned(8))) = 0x00007c000000f800ULL;
 123 static const uint64_t green_15mask __attribute__((aligned(8)))= 0x000003e0000007e0ULL;
 124 static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
 125
 126 #ifdef FAST_BGR2YV12
 127 static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
 128 static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
 129 static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
 130 #else
 131 static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
 132 static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
 133 static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
 134 #endif
 135 static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
 136 static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
 137 static const uint64_t w1111       attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
 138
 139 #if 0
 140 static volatile uint64_t __attribute__((aligned(8))) b5Dither;
 141 static volatile uint64_t __attribute__((aligned(8))) g5Dither;
 142 static volatile uint64_t __attribute__((aligned(8))) g6Dither;
 143 static volatile uint64_t __attribute__((aligned(8))) r5Dither;
 144
 145 static uint64_t __attribute__((aligned(8))) dither4[2]={
 146         0x0103010301030103LL,
 147         0x0200020002000200LL,};
 148
 149 static uint64_t __attribute__((aligned(8))) dither8[2]={
 150         0x0602060206020602LL,
 151         0x0004000400040004LL,};
 152 #endif
 153 #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
 154
 155 #define RGB2YUV_SHIFT 8
 156 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
 157 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
 158 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
 159 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
 160 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
 161 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
 162 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
 163 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
 164 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
 165
 166 //Note: we have C, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
 167 //Plain C versions
 168 #undef HAVE_MMX
 169 #undef HAVE_MMX2
 170 #undef HAVE_3DNOW
 171 #undef HAVE_SSE2
 172 #define RENAME(a) a ## _C
 173 #include "rgb2rgb_template.c"
 174
 175 #if defined(ARCH_X86) || defined(ARCH_X86_64)
 176
 177 //MMX versions
 178 #undef RENAME
 179 #define HAVE_MMX
 180 #undef HAVE_MMX2
 181 #undef HAVE_3DNOW
 182 #undef HAVE_SSE2
 183 #define RENAME(a) a ## _MMX
 184 #include "rgb2rgb_template.c"
 185
 186 //MMX2 versions
 187 #undef RENAME
 188 #define HAVE_MMX
 189 #define HAVE_MMX2
 190 #undef HAVE_3DNOW
 191 #undef HAVE_SSE2
 192 #define RENAME(a) a ## _MMX2
 193 #include "rgb2rgb_template.c"
 194
 195 //3DNOW versions
 196 #undef RENAME
 197 #define HAVE_MMX
 198 #undef HAVE_MMX2
 199 #define HAVE_3DNOW
 200 #undef HAVE_SSE2
 201 #define RENAME(a) a ## _3DNOW
 202 #include "rgb2rgb_template.c"
 203
 204 #endif //ARCH_X86 || ARCH_X86_64
 205
 206 /*
 207  rgb15->rgb16 Original by Strepto/Astral
 208  ported to gcc & bugfixed : A'rpi
 209  MMX2, 3DNOW optimization by Nick Kurshev
 210  32bit c version, and and&add trick by Michael Niedermayer
 211 */
 212
 213 void sws_rgb2rgb_init(int flags){
 214 #if defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX)
 215         if(flags & SWS_CPU_CAPS_MMX2){
 216                 rgb15to16= rgb15to16_MMX2;
 217                 rgb15to24= rgb15to24_MMX2;
 218                 rgb15to32= rgb15to32_MMX2;
 219                 rgb16to24= rgb16to24_MMX2;
 220                 rgb16to32= rgb16to32_MMX2;
 221                 rgb16to15= rgb16to15_MMX2;
 222                 rgb24to16= rgb24to16_MMX2;
 223                 rgb24to15= rgb24to15_MMX2;
 224                 rgb24to32= rgb24to32_MMX2;
 225                 rgb32to16= rgb32to16_MMX2;
 226                 rgb32to15= rgb32to15_MMX2;
 227                 rgb32to24= rgb32to24_MMX2;
 228                 rgb24tobgr15= rgb24tobgr15_MMX2;
 229                 rgb24tobgr16= rgb24tobgr16_MMX2;
 230                 rgb24tobgr24= rgb24tobgr24_MMX2;
 231                 rgb32tobgr32= rgb32tobgr32_MMX2;
 232                 rgb32tobgr16= rgb32tobgr16_MMX2;
 233                 rgb32tobgr15= rgb32tobgr15_MMX2;
 234                 yv12toyuy2= yv12toyuy2_MMX2;
 235                 yv12touyvy= yv12touyvy_MMX2;
 236                 yuv422ptoyuy2= yuv422ptoyuy2_MMX2;
 237                 yuy2toyv12= yuy2toyv12_MMX2;
 238 //              uyvytoyv12= uyvytoyv12_MMX2;
 239 //              yvu9toyv12= yvu9toyv12_MMX2;
 240                 planar2x= planar2x_MMX2;
 241                 rgb24toyv12= rgb24toyv12_MMX2;
 242                 interleaveBytes= interleaveBytes_MMX2;
 243                 vu9_to_vu12= vu9_to_vu12_MMX2;
 244                 yvu9_to_yuy2= yvu9_to_yuy2_MMX2;
 245         }else if(flags & SWS_CPU_CAPS_3DNOW){
 246                 rgb15to16= rgb15to16_3DNOW;
 247                 rgb15to24= rgb15to24_3DNOW;
 248                 rgb15to32= rgb15to32_3DNOW;
 249                 rgb16to24= rgb16to24_3DNOW;
 250                 rgb16to32= rgb16to32_3DNOW;
 251                 rgb16to15= rgb16to15_3DNOW;
 252                 rgb24to16= rgb24to16_3DNOW;
 253                 rgb24to15= rgb24to15_3DNOW;
 254                 rgb24to32= rgb24to32_3DNOW;
 255                 rgb32to16= rgb32to16_3DNOW;
 256                 rgb32to15= rgb32to15_3DNOW;
 257                 rgb32to24= rgb32to24_3DNOW;
 258                 rgb24tobgr15= rgb24tobgr15_3DNOW;
 259                 rgb24tobgr16= rgb24tobgr16_3DNOW;
 260                 rgb24tobgr24= rgb24tobgr24_3DNOW;
 261                 rgb32tobgr32= rgb32tobgr32_3DNOW;
 262                 rgb32tobgr16= rgb32tobgr16_3DNOW;
 263                 rgb32tobgr15= rgb32tobgr15_3DNOW;
 264                 yv12toyuy2= yv12toyuy2_3DNOW;
 265                 yv12touyvy= yv12touyvy_3DNOW;
 266                 yuv422ptoyuy2= yuv422ptoyuy2_3DNOW;
 267                 yuy2toyv12= yuy2toyv12_3DNOW;
 268 //              uyvytoyv12= uyvytoyv12_3DNOW;
 269 //              yvu9toyv12= yvu9toyv12_3DNOW;
 270                 planar2x= planar2x_3DNOW;
 271                 rgb24toyv12= rgb24toyv12_3DNOW;
 272                 interleaveBytes= interleaveBytes_3DNOW;
 273                 vu9_to_vu12= vu9_to_vu12_3DNOW;
 274                 yvu9_to_yuy2= yvu9_to_yuy2_3DNOW;
 275         }else if(flags & SWS_CPU_CAPS_MMX){
 276                 rgb15to16= rgb15to16_MMX;
 277                 rgb15to24= rgb15to24_MMX;
 278                 rgb15to32= rgb15to32_MMX;
 279                 rgb16to24= rgb16to24_MMX;
 280                 rgb16to32= rgb16to32_MMX;
 281                 rgb16to15= rgb16to15_MMX;
 282                 rgb24to16= rgb24to16_MMX;
 283                 rgb24to15= rgb24to15_MMX;
 284                 rgb24to32= rgb24to32_MMX;
 285                 rgb32to16= rgb32to16_MMX;
 286                 rgb32to15= rgb32to15_MMX;
 287                 rgb32to24= rgb32to24_MMX;
 288                 rgb24tobgr15= rgb24tobgr15_MMX;
 289                 rgb24tobgr16= rgb24tobgr16_MMX;
 290                 rgb24tobgr24= rgb24tobgr24_MMX;
 291                 rgb32tobgr32= rgb32tobgr32_MMX;
 292                 rgb32tobgr16= rgb32tobgr16_MMX;
 293                 rgb32tobgr15= rgb32tobgr15_MMX;
 294                 yv12toyuy2= yv12toyuy2_MMX;
 295                 yv12touyvy= yv12touyvy_MMX;
 296                 yuv422ptoyuy2= yuv422ptoyuy2_MMX;
 297                 yuy2toyv12= yuy2toyv12_MMX;
 298 //              uyvytoyv12= uyvytoyv12_MMX;
 299 //              yvu9toyv12= yvu9toyv12_MMX;
 300                 planar2x= planar2x_MMX;
 301                 rgb24toyv12= rgb24toyv12_MMX;
 302                 interleaveBytes= interleaveBytes_MMX;
 303                 vu9_to_vu12= vu9_to_vu12_MMX;
 304                 yvu9_to_yuy2= yvu9_to_yuy2_MMX;
 305         }else
 306 #endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
 307         {
 308                 rgb15to16= rgb15to16_C;
 309                 rgb15to24= rgb15to24_C;
 310                 rgb15to32= rgb15to32_C;
 311                 rgb16to24= rgb16to24_C;
 312                 rgb16to32= rgb16to32_C;
 313                 rgb16to15= rgb16to15_C;
 314                 rgb24to16= rgb24to16_C;
 315                 rgb24to15= rgb24to15_C;
 316                 rgb24to32= rgb24to32_C;
 317                 rgb32to16= rgb32to16_C;
 318                 rgb32to15= rgb32to15_C;
 319                 rgb32to24= rgb32to24_C;
 320                 rgb24tobgr15= rgb24tobgr15_C;
 321                 rgb24tobgr16= rgb24tobgr16_C;
 322                 rgb24tobgr24= rgb24tobgr24_C;
 323                 rgb32tobgr32= rgb32tobgr32_C;
 324                 rgb32tobgr16= rgb32tobgr16_C;
 325                 rgb32tobgr15= rgb32tobgr15_C;
 326                 yv12toyuy2= yv12toyuy2_C;
 327                 yv12touyvy= yv12touyvy_C;
 328                 yuv422ptoyuy2= yuv422ptoyuy2_C;
 329                 yuy2toyv12= yuy2toyv12_C;
 330 //              uyvytoyv12= uyvytoyv12_C;
 331 //              yvu9toyv12= yvu9toyv12_C;
 332                 planar2x= planar2x_C;
 333                 rgb24toyv12= rgb24toyv12_C;
 334                 interleaveBytes= interleaveBytes_C;
 335                 vu9_to_vu12= vu9_to_vu12_C;
 336                 yvu9_to_yuy2= yvu9_to_yuy2_C;
 337         }
 338 }
 339
 340 /**
 341  * Pallete is assumed to contain bgr32
 342  */
 343 void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 344 {
 345         long i;
 346
 347 /*
 348         for(i=0; i<num_pixels; i++)
 349                 ((unsigned *)dst)[i] = ((unsigned *)palette)[ src[i] ];
 350 */
 351
 352         for(i=0; i<num_pixels; i++)
 353         {
 354                 #ifdef WORDS_BIGENDIAN
 355                         dst[3]= palette[ src[i]*4+2 ];
 356                         dst[2]= palette[ src[i]*4+1 ];
 357                         dst[1]= palette[ src[i]*4+0 ];
 358                 #else
 359                 //FIXME slow?
 360                         dst[0]= palette[ src[i]*4+2 ];
 361                         dst[1]= palette[ src[i]*4+1 ];
 362                         dst[2]= palette[ src[i]*4+0 ];
 363                         //dst[3]= 0; /* do we need this cleansing? */
 364                 #endif
 365                 dst+= 4;
 366         }
 367 }
 368
 369 void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 370 {
 371         long i;
 372         for(i=0; i<num_pixels; i++)
 373         {
 374                 #ifdef WORDS_BIGENDIAN
 375                         dst[3]= palette[ src[i]*4+0 ];
 376                         dst[2]= palette[ src[i]*4+1 ];
 377                         dst[1]= palette[ src[i]*4+2 ];
 378                 #else
 379                         //FIXME slow?
 380                         dst[0]= palette[ src[i]*4+0 ];
 381                         dst[1]= palette[ src[i]*4+1 ];
 382                         dst[2]= palette[ src[i]*4+2 ];
 383                         //dst[3]= 0; /* do we need this cleansing? */
 384                 #endif
 385
 386                 dst+= 4;
 387         }
 388 }
 389
 390 /**
 391  * Pallete is assumed to contain bgr32
 392  */
 393 void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 394 {
 395         long i;
 396 /*
 397         writes 1 byte o much and might cause alignment issues on some architectures?
 398         for(i=0; i<num_pixels; i++)
 399                 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
 400 */
 401         for(i=0; i<num_pixels; i++)
 402         {
 403                 //FIXME slow?
 404                 dst[0]= palette[ src[i]*4+2 ];
 405                 dst[1]= palette[ src[i]*4+1 ];
 406                 dst[2]= palette[ src[i]*4+0 ];
 407                 dst+= 3;
 408         }
 409 }
 410
 411 void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 412 {
 413         long i;
 414 /*
 415         writes 1 byte o much and might cause alignment issues on some architectures?
 416         for(i=0; i<num_pixels; i++)
 417                 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
 418 */
 419         for(i=0; i<num_pixels; i++)
 420         {
 421                 //FIXME slow?
 422                 dst[0]= palette[ src[i]*4+0 ];
 423                 dst[1]= palette[ src[i]*4+1 ];
 424                 dst[2]= palette[ src[i]*4+2 ];
 425                 dst+= 3;
 426         }
 427 }
 428
 429 /**
 430  * Palette is assumed to contain bgr16, see rgb32to16 to convert the palette
 431  */
 432 void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 433 {
 434         long i;
 435         for(i=0; i<num_pixels; i++)
 436                 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
 437 }
 438 void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 439 {
 440         long i;
 441         for(i=0; i<num_pixels; i++)
 442                 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
 443 }
 444
 445 /**
 446  * Pallete is assumed to contain bgr15, see rgb32to15 to convert the palette
 447  */
 448 void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 449 {
 450         long i;
 451         for(i=0; i<num_pixels; i++)
 452                 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
 453 }
 454 void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
 455 {
 456         long i;
 457         for(i=0; i<num_pixels; i++)
 458                 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
 459 }
 460
 461 void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
 462 {
 463         long i;
 464         long num_pixels = src_size >> 2;
 465         for(i=0; i<num_pixels; i++)
 466         {
 467                 #ifdef WORDS_BIGENDIAN
 468                         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
 469                         dst[3*i + 0] = src[4*i + 1];
 470                         dst[3*i + 1] = src[4*i + 2];
 471                         dst[3*i + 2] = src[4*i + 3];
 472                 #else
 473                         dst[3*i + 0] = src[4*i + 2];
 474                         dst[3*i + 1] = src[4*i + 1];
 475                         dst[3*i + 2] = src[4*i + 0];
 476                 #endif
 477         }
 478 }
 479
 480 void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
 481 {
 482         long i;
 483         for(i=0; 3*i<src_size; i++)
 484         {
 485                 #ifdef WORDS_BIGENDIAN
 486                         /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
 487                         dst[4*i + 0] = 0;
 488                         dst[4*i + 1] = src[3*i + 0];
 489                         dst[4*i + 2] = src[3*i + 1];
 490                         dst[4*i + 3] = src[3*i + 2];
 491                 #else
 492                         dst[4*i + 0] = src[3*i + 2];
 493                         dst[4*i + 1] = src[3*i + 1];
 494                         dst[4*i + 2] = src[3*i + 0];
 495                         dst[4*i + 3] = 0;
 496                 #endif
 497         }
 498 }
 499
 500 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
 501 {
 502         const uint16_t *end;
 503         uint8_t *d = (uint8_t *)dst;
 504         const uint16_t *s = (uint16_t *)src;
 505         end = s + src_size/2;
 506         while(s < end)
 507         {
 508                 register uint16_t bgr;
 509                 bgr = *s++;
 510                 #ifdef WORDS_BIGENDIAN
 511                         *d++ = 0;
 512                         *d++ = (bgr&0x1F)<<3;
 513                         *d++ = (bgr&0x7E0)>>3;
 514                         *d++ = (bgr&0xF800)>>8;
 515                 #else
 516                         *d++ = (bgr&0xF800)>>8;
 517                         *d++ = (bgr&0x7E0)>>3;
 518                         *d++ = (bgr&0x1F)<<3;
 519                         *d++ = 0;
 520                 #endif
 521         }
 522 }
 523
 524 void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
 525 {
 526         const uint16_t *end;
 527         uint8_t *d = (uint8_t *)dst;
 528         const uint16_t *s = (const uint16_t *)src;
 529         end = s + src_size/2;
 530         while(s < end)
 531         {
 532                 register uint16_t bgr;
 533                 bgr = *s++;
 534                 *d++ = (bgr&0xF800)>>8;
 535                 *d++ = (bgr&0x7E0)>>3;
 536                 *d++ = (bgr&0x1F)<<3;
 537         }
 538 }
 539
 540 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
 541 {
 542         long i;
 543         long num_pixels = src_size >> 1;
 544
 545         for(i=0; i<num_pixels; i++)
 546         {
 547             unsigned b,g,r;
 548             register uint16_t rgb;
 549             rgb = src[2*i];
 550             r = rgb&0x1F;
 551             g = (rgb&0x7E0)>>5;
 552             b = (rgb&0xF800)>>11;
 553             dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
 554         }
 555 }
 556
 557 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
 558 {
 559         long i;
 560         long num_pixels = src_size >> 1;
 561
 562         for(i=0; i<num_pixels; i++)
 563         {
 564             unsigned b,g,r;
 565             register uint16_t rgb;
 566             rgb = src[2*i];
 567             r = rgb&0x1F;
 568             g = (rgb&0x7E0)>>5;
 569             b = (rgb&0xF800)>>11;
 570             dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
 571         }
 572 }
 573
 574 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
 575 {
 576         const uint16_t *end;
 577         uint8_t *d = (uint8_t *)dst;
 578         const uint16_t *s = (const uint16_t *)src;
 579         end = s + src_size/2;
 580         while(s < end)
 581         {
 582                 register uint16_t bgr;
 583                 bgr = *s++;
 584                 #ifdef WORDS_BIGENDIAN
 585                         *d++ = 0;
 586                         *d++ = (bgr&0x1F)<<3;
 587                         *d++ = (bgr&0x3E0)>>2;
 588                         *d++ = (bgr&0x7C00)>>7;
 589                 #else
 590                         *d++ = (bgr&0x7C00)>>7;
 591                         *d++ = (bgr&0x3E0)>>2;
 592                         *d++ = (bgr&0x1F)<<3;
 593                         *d++ = 0;
 594                 #endif
 595         }
 596 }
 597
 598 void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
 599 {
 600         const uint16_t *end;
 601         uint8_t *d = (uint8_t *)dst;
 602         const uint16_t *s = (uint16_t *)src;
 603         end = s + src_size/2;
 604         while(s < end)
 605         {
 606                 register uint16_t bgr;
 607                 bgr = *s++;
 608                 *d++ = (bgr&0x7C00)>>7;
 609                 *d++ = (bgr&0x3E0)>>2;
 610                 *d++ = (bgr&0x1F)<<3;
 611         }
 612 }
 613
 614 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
 615 {
 616         long i;
 617         long num_pixels = src_size >> 1;
 618
 619         for(i=0; i<num_pixels; i++)
 620         {
 621             unsigned b,g,r;
 622             register uint16_t rgb;
 623             rgb = src[2*i];
 624             r = rgb&0x1F;
 625             g = (rgb&0x3E0)>>5;
 626             b = (rgb&0x7C00)>>10;
 627             dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
 628         }
 629 }
 630
 631 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
 632 {
 633         long i;
 634         long num_pixels = src_size >> 1;
 635
 636         for(i=0; i<num_pixels; i++)
 637         {
 638             unsigned b,g,r;
 639             register uint16_t rgb;
 640             rgb = src[2*i];
 641             r = rgb&0x1F;
 642             g = (rgb&0x3E0)>>5;
 643             b = (rgb&0x7C00)>>10;
 644             dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
 645         }
 646 }
 647
 648 void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
 649 {
 650         long i;
 651         long num_pixels = src_size;
 652         for(i=0; i<num_pixels; i++)
 653         {
 654             unsigned b,g,r;
 655             register uint8_t rgb;
 656             rgb = src[i];
 657             r = (rgb&0x07);
 658             g = (rgb&0x38)>>3;
 659             b = (rgb&0xC0)>>6;
 660             dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
 661         }
 662 }