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