src/misc/fourcc.c

   1 /*****************************************************************************
   2  * fourcc.c: fourcc helpers functions
   3  *****************************************************************************
   4  * Copyright © 2009-2011 Laurent Aimar
   5  *
   6  * Authors: Laurent Aimar <fenrir@videolan.org>
   7  *          Jean-Baptiste Kempf <jb@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_fourcc.h>
  33 #include <vlc_es.h>
  34 #include <assert.h>
  35
  36 #include "fourcc_tables.h"
  37
  38 static int fourcc_cmp(const void *key, const void *ent)
  39 {
  40     return memcmp(key, ent, 4);
  41 }
  42
  43 static vlc_fourcc_t Lookup(vlc_fourcc_t fourcc, const char **restrict dsc,
  44                            const struct fourcc_mapping *mapv, size_t mapc,
  45                            const struct fourcc_desc *dscv, size_t dscc)
  46 {
  47     const struct fourcc_mapping *mapping;
  48     const struct fourcc_desc *desc;
  49
  50     mapping = bsearch(&fourcc, mapv, mapc, sizeof (*mapv), fourcc_cmp);
  51     if (mapping != NULL)
  52     {
  53         if (dsc != NULL)
  54         {
  55             desc = bsearch(&fourcc, dscv, dscc, sizeof (*dscv), fourcc_cmp);
  56             if (desc != NULL)
  57             {
  58                 *dsc = desc->desc;
  59                 return mapping->fourcc;
  60             }
  61         }
  62         fourcc = mapping->fourcc;
  63     }
  64
  65     desc = bsearch(&fourcc, dscv, dscc, sizeof (*dscv), fourcc_cmp);
  66     if (desc == NULL)
  67         return 0; /* Unknown FourCC */
  68     if (dsc != NULL)
  69         *dsc = desc->desc;
  70     return fourcc; /* Known FourCC (has a description) */
  71 }
  72
  73 static vlc_fourcc_t LookupVideo(vlc_fourcc_t fourcc, const char **restrict dsc)
  74 {
  75     return Lookup(fourcc, dsc, mapping_video,
  76                   sizeof (mapping_video) / sizeof (mapping_video[0]),
  77                   desc_video, sizeof (desc_video) / sizeof (desc_video[0]));
  78 }
  79
  80 static vlc_fourcc_t LookupAudio(vlc_fourcc_t fourcc, const char **restrict dsc)
  81 {
  82     return Lookup(fourcc, dsc, mapping_audio,
  83                   sizeof (mapping_audio) / sizeof (mapping_audio[0]),
  84                   desc_audio, sizeof (desc_audio) / sizeof (desc_audio[0]));
  85 }
  86
  87 static vlc_fourcc_t LookupSpu(vlc_fourcc_t fourcc, const char **restrict dsc)
  88 {
  89     return Lookup(fourcc, dsc, mapping_spu,
  90                   sizeof (mapping_spu) / sizeof (mapping_spu[0]),
  91                   desc_spu, sizeof (desc_spu) / sizeof (desc_spu[0]));
  92 }
  93
  94 static vlc_fourcc_t LookupCat(vlc_fourcc_t fourcc, const char **restrict dsc,
  95                               int cat)
  96 {
  97     switch (cat)
  98     {
  99         case VIDEO_ES:
 100             return LookupVideo(fourcc, dsc);
 101         case AUDIO_ES:
 102             return LookupAudio(fourcc, dsc);
 103         case SPU_ES:
 104             return LookupSpu(fourcc, dsc);
 105     }
 106
 107     vlc_fourcc_t ret = LookupVideo(fourcc, dsc);
 108     if (!ret)
 109         ret = LookupAudio(fourcc, dsc);
 110     if (!ret)
 111         ret = LookupSpu(fourcc, dsc);
 112     return ret;
 113 }
 114
 115 vlc_fourcc_t vlc_fourcc_GetCodec(int cat, vlc_fourcc_t fourcc)
 116 {
 117     vlc_fourcc_t codec = LookupCat(fourcc, NULL, cat);
 118     return codec ? codec : fourcc;
 119 }
 120
 121 vlc_fourcc_t vlc_fourcc_GetCodecFromString( int i_cat, const char *psz_fourcc )
 122 {
 123     if( !psz_fourcc || strlen(psz_fourcc) != 4 )
 124         return 0;
 125     return vlc_fourcc_GetCodec( i_cat,
 126                                 VLC_FOURCC( psz_fourcc[0], psz_fourcc[1],
 127                                             psz_fourcc[2], psz_fourcc[3] ) );
 128 }
 129
 130 vlc_fourcc_t vlc_fourcc_GetCodecAudio( vlc_fourcc_t i_fourcc, int i_bits )
 131 {
 132     const int i_bytes = ( i_bits + 7 ) / 8;
 133
 134     if( i_fourcc == VLC_FOURCC( 'a', 'f', 'l', 't' ) )
 135     {
 136         switch( i_bytes )
 137         {
 138         case 4:
 139             return VLC_CODEC_FL32;
 140         case 8:
 141             return VLC_CODEC_FL64;
 142         default:
 143             return 0;
 144         }
 145     }
 146     else if( i_fourcc == VLC_FOURCC( 'a', 'r', 'a', 'w' ) )
 147     {
 148         switch( i_bytes )
 149         {
 150         case 1:
 151             return VLC_CODEC_U8;
 152         case 2:
 153             return VLC_CODEC_S16L;
 154         case 3:
 155             return VLC_CODEC_S24L;
 156         case 4:
 157             return VLC_CODEC_S32L;
 158         default:
 159             return 0;
 160         }
 161     }
 162     else if( i_fourcc == VLC_FOURCC( 't', 'w', 'o', 's' ) )
 163     {
 164         switch( i_bytes )
 165         {
 166         case 1:
 167             return VLC_CODEC_S8;
 168         case 2:
 169             return VLC_CODEC_S16B;
 170         case 3:
 171             return VLC_CODEC_S24B;
 172         case 4:
 173             return VLC_CODEC_S32B;
 174         default:
 175             return 0;
 176         }
 177     }
 178     else if( i_fourcc == VLC_FOURCC( 's', 'o', 'w', 't' ) )
 179     {
 180         switch( i_bytes )
 181         {
 182         case 1:
 183             return VLC_CODEC_S8;
 184         case 2:
 185             return VLC_CODEC_S16L;
 186         case 3:
 187             return VLC_CODEC_S24L;
 188         case 4:
 189             return VLC_CODEC_S32L;
 190         default:
 191             return 0;
 192         }
 193     }
 194     else
 195     {
 196         return vlc_fourcc_GetCodec( AUDIO_ES, i_fourcc );
 197     }
 198 }
 199
 200 const char *vlc_fourcc_GetDescription(int cat, vlc_fourcc_t fourcc)
 201 {
 202     const char *ret;
 203
 204     return LookupCat(fourcc, &ret, cat) ? ret : "";
 205 }
 206
 207
 208 /* */
 209 #define VLC_CODEC_YUV_PLANAR_410 \
 210     VLC_CODEC_I410, VLC_CODEC_YV9
 211
 212 #define VLC_CODEC_YUV_PLANAR_420 \
 213     VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420
 214
 215 #define VLC_CODEC_YUV_SEMIPLANAR_420 \
 216     VLC_CODEC_NV12, VLC_CODEC_NV21
 217
 218 #define VLC_CODEC_YUV_PLANAR_420_16 \
 219     VLC_CODEC_I420_16L, VLC_CODEC_I420_16B, VLC_CODEC_I420_12L, VLC_CODEC_I420_12B, VLC_CODEC_I420_10L, VLC_CODEC_I420_10B, VLC_CODEC_I420_9L, VLC_CODEC_I420_9B
 220
 221 #define VLC_CODEC_YUV_PLANAR_422 \
 222     VLC_CODEC_I422, VLC_CODEC_J422
 223
 224 #define VLC_CODEC_YUV_SEMIPLANAR_422 \
 225     VLC_CODEC_NV16, VLC_CODEC_NV61
 226
 227 #define VLC_CODEC_YUV_PLANAR_422_16 \
 228     VLC_CODEC_I422_12L, VLC_CODEC_I422_12B, VLC_CODEC_I422_10L, VLC_CODEC_I422_10B, VLC_CODEC_I422_9L, VLC_CODEC_I422_9B
 229
 230 #define VLC_CODEC_YUV_PLANAR_440 \
 231     VLC_CODEC_I440, VLC_CODEC_J440
 232
 233 #define VLC_CODEC_YUV_PLANAR_444 \
 234     VLC_CODEC_I444, VLC_CODEC_J444
 235
 236 #define VLC_CODEC_YUV_SEMIPLANAR_444 \
 237     VLC_CODEC_NV24, VLC_CODEC_NV42
 238
 239 #define VLC_CODEC_YUV_PLANAR_444_16 \
 240     VLC_CODEC_I444_10L, VLC_CODEC_I444_10B, VLC_CODEC_I444_9L, VLC_CODEC_I444_9B, \
 241     VLC_CODEC_I444_16L, VLC_CODEC_I444_16B, VLC_CODEC_I444_12L, VLC_CODEC_I444_12B
 242
 243 #define VLC_CODEC_YUV_PACKED \
 244     VLC_CODEC_YUYV, VLC_CODEC_YVYU, \
 245     VLC_CODEC_UYVY, VLC_CODEC_VYUY
 246
 247 #define VLC_CODEC_FALLBACK_420 \
 248     VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PACKED, \
 249     VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
 250     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
 251
 252 static const vlc_fourcc_t p_I420_fallback[] = {
 253     VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420, 0
 254 };
 255 static const vlc_fourcc_t p_J420_fallback[] = {
 256     VLC_CODEC_J420, VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_FALLBACK_420, 0
 257 };
 258 static const vlc_fourcc_t p_YV12_fallback[] = {
 259     VLC_CODEC_YV12, VLC_CODEC_I420, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420, 0
 260 };
 261 static const vlc_fourcc_t p_NV12_fallback[] = {
 262     VLC_CODEC_NV12, VLC_CODEC_I420, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420, 0
 263 };
 264
 265 #define VLC_CODEC_FALLBACK_420_16 \
 266     VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420
 267
 268 static const vlc_fourcc_t p_I420_9L_fallback[] = {
 269     VLC_CODEC_I420_9L, VLC_CODEC_I420_9B, VLC_CODEC_FALLBACK_420_16, 0
 270 };
 271 static const vlc_fourcc_t p_I420_9B_fallback[] = {
 272     VLC_CODEC_I420_9B, VLC_CODEC_I420_9L, VLC_CODEC_FALLBACK_420_16, 0
 273 };
 274 static const vlc_fourcc_t p_I420_10L_fallback[] = {
 275     VLC_CODEC_I420_10L, VLC_CODEC_I420_10B, VLC_CODEC_FALLBACK_420_16, 0
 276 };
 277 static const vlc_fourcc_t p_I420_10B_fallback[] = {
 278     VLC_CODEC_I420_10B, VLC_CODEC_I420_10L, VLC_CODEC_FALLBACK_420_16, 0
 279 };
 280 static const vlc_fourcc_t p_I420_12L_fallback[] = {
 281     VLC_CODEC_I420_12L, VLC_CODEC_I420_12B, VLC_CODEC_FALLBACK_420_16, 0
 282 };
 283 static const vlc_fourcc_t p_I420_12B_fallback[] = {
 284     VLC_CODEC_I420_12B, VLC_CODEC_I420_12L, VLC_CODEC_FALLBACK_420_16, 0
 285 };
 286 static const vlc_fourcc_t p_I420_16L_fallback[] = {
 287     VLC_CODEC_I420_16L, VLC_CODEC_I420_16B, VLC_CODEC_FALLBACK_420_16, 0
 288 };
 289 static const vlc_fourcc_t p_I420_16B_fallback[] = {
 290     VLC_CODEC_I420_16B, VLC_CODEC_I420_16L, VLC_CODEC_FALLBACK_420_16, 0
 291 };
 292
 293
 294 #define VLC_CODEC_FALLBACK_422 \
 295     VLC_CODEC_YUV_PACKED, VLC_CODEC_YUV_PLANAR_420, \
 296     VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
 297     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
 298
 299 static const vlc_fourcc_t p_I422_fallback[] = {
 300     VLC_CODEC_I422, VLC_CODEC_J422, VLC_CODEC_FALLBACK_422, 0
 301 };
 302 static const vlc_fourcc_t p_J422_fallback[] = {
 303     VLC_CODEC_J422, VLC_CODEC_I422, VLC_CODEC_FALLBACK_422, 0
 304 };
 305
 306 #define VLC_CODEC_FALLBACK_422_16 \
 307     VLC_CODEC_I422, VLC_CODEC_J422, VLC_CODEC_FALLBACK_422
 308
 309 static const vlc_fourcc_t p_I422_9L_fallback[] = {
 310     VLC_CODEC_I422_9L, VLC_CODEC_I422_9B, VLC_CODEC_FALLBACK_422_16, 0
 311 };
 312 static const vlc_fourcc_t p_I422_9B_fallback[] = {
 313     VLC_CODEC_I422_9B, VLC_CODEC_I422_9L, VLC_CODEC_FALLBACK_422_16, 0
 314 };
 315 static const vlc_fourcc_t p_I422_10L_fallback[] = {
 316     VLC_CODEC_I422_10L, VLC_CODEC_I422_10B, VLC_CODEC_FALLBACK_422_16, 0
 317 };
 318 static const vlc_fourcc_t p_I422_10B_fallback[] = {
 319     VLC_CODEC_I422_10B, VLC_CODEC_I422_10L, VLC_CODEC_FALLBACK_422_16, 0
 320 };
 321 static const vlc_fourcc_t p_I422_12L_fallback[] = {
 322     VLC_CODEC_I422_12L, VLC_CODEC_I422_12B, VLC_CODEC_FALLBACK_422_16, 0
 323 };
 324 static const vlc_fourcc_t p_I422_12B_fallback[] = {
 325     VLC_CODEC_I422_12B, VLC_CODEC_I422_12L, VLC_CODEC_FALLBACK_422_16, 0
 326 };
 327
 328 #define VLC_CODEC_FALLBACK_444 \
 329     VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PACKED, \
 330     VLC_CODEC_YUV_PLANAR_420, VLC_CODEC_YUV_PLANAR_440, \
 331     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
 332
 333 static const vlc_fourcc_t p_I444_fallback[] = {
 334     VLC_CODEC_I444, VLC_CODEC_J444, VLC_CODEC_FALLBACK_444, 0
 335 };
 336 static const vlc_fourcc_t p_J444_fallback[] = {
 337     VLC_CODEC_J444, VLC_CODEC_I444, VLC_CODEC_FALLBACK_444, 0
 338 };
 339
 340 #define VLC_CODEC_FALLBACK_444_16 \
 341     VLC_CODEC_I444, VLC_CODEC_J444, VLC_CODEC_FALLBACK_444
 342
 343 static const vlc_fourcc_t p_I444_9L_fallback[] = {
 344     VLC_CODEC_I444_9L, VLC_CODEC_I444_9B, VLC_CODEC_FALLBACK_444_16, 0
 345 };
 346 static const vlc_fourcc_t p_I444_9B_fallback[] = {
 347     VLC_CODEC_I444_9B, VLC_CODEC_I444_9L, VLC_CODEC_FALLBACK_444_16, 0
 348 };
 349 static const vlc_fourcc_t p_I444_10L_fallback[] = {
 350     VLC_CODEC_I444_10L, VLC_CODEC_I444_10B, VLC_CODEC_FALLBACK_444_16, 0
 351 };
 352 static const vlc_fourcc_t p_I444_10B_fallback[] = {
 353     VLC_CODEC_I444_10B, VLC_CODEC_I444_10L, VLC_CODEC_FALLBACK_444_16, 0
 354 };
 355 static const vlc_fourcc_t p_I444_12L_fallback[] = {
 356     VLC_CODEC_I444_12L, VLC_CODEC_I444_12B, VLC_CODEC_FALLBACK_444_16, 0
 357 };
 358 static const vlc_fourcc_t p_I444_12B_fallback[] = {
 359     VLC_CODEC_I444_12B, VLC_CODEC_I444_12L, VLC_CODEC_FALLBACK_444_16, 0
 360 };
 361 static const vlc_fourcc_t p_I444_16L_fallback[] = {
 362     VLC_CODEC_I444_16L, VLC_CODEC_I444_16B, VLC_CODEC_FALLBACK_444_16, 0
 363 };
 364 static const vlc_fourcc_t p_I444_16B_fallback[] = {
 365     VLC_CODEC_I444_16B, VLC_CODEC_I444_16L, VLC_CODEC_FALLBACK_444_16, 0
 366 };
 367
 368 /* No fallback for VDPAU chromas since there is no VDPAU -> YUV filter */
 369 static const vlc_fourcc_t p_VDPAU_VIDEO_420_fallback[] = {
 370     VLC_CODEC_VDPAU_VIDEO_420, 0
 371 };
 372 static const vlc_fourcc_t p_VDPAU_VIDEO_422_fallback[] = {
 373     VLC_CODEC_VDPAU_VIDEO_422, 0
 374 };
 375 static const vlc_fourcc_t p_VDPAU_VIDEO_444_fallback[] = {
 376     VLC_CODEC_VDPAU_VIDEO_444, 0
 377 };
 378
 379 static const vlc_fourcc_t p_I440_fallback[] = {
 380     VLC_CODEC_I440,
 381     VLC_CODEC_YUV_PLANAR_420,
 382     VLC_CODEC_YUV_PLANAR_422,
 383     VLC_CODEC_YUV_PLANAR_444,
 384     VLC_CODEC_YUV_PACKED,
 385     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211, 0
 386 };
 387
 388 #define VLC_CODEC_FALLBACK_PACKED \
 389     VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PLANAR_420, \
 390     VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
 391     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
 392
 393 static const vlc_fourcc_t p_YUYV_fallback[] = {
 394     VLC_CODEC_YUYV,
 395     VLC_CODEC_YVYU,
 396     VLC_CODEC_UYVY,
 397     VLC_CODEC_VYUY,
 398     VLC_CODEC_FALLBACK_PACKED, 0
 399 };
 400 static const vlc_fourcc_t p_YVYU_fallback[] = {
 401     VLC_CODEC_YVYU,
 402     VLC_CODEC_YUYV,
 403     VLC_CODEC_UYVY,
 404     VLC_CODEC_VYUY,
 405     VLC_CODEC_FALLBACK_PACKED, 0
 406 };
 407 static const vlc_fourcc_t p_UYVY_fallback[] = {
 408     VLC_CODEC_UYVY,
 409     VLC_CODEC_VYUY,
 410     VLC_CODEC_YUYV,
 411     VLC_CODEC_YVYU,
 412     VLC_CODEC_FALLBACK_PACKED, 0
 413 };
 414 static const vlc_fourcc_t p_VYUY_fallback[] = {
 415     VLC_CODEC_VYUY,
 416     VLC_CODEC_UYVY,
 417     VLC_CODEC_YUYV,
 418     VLC_CODEC_YVYU,
 419     VLC_CODEC_FALLBACK_PACKED, 0
 420 };
 421
 422 static const vlc_fourcc_t *pp_YUV_fallback[] = {
 423     p_YV12_fallback,
 424     p_I420_fallback,
 425     p_I420_9L_fallback,
 426     p_I420_9B_fallback,
 427     p_I420_10L_fallback,
 428     p_I420_10B_fallback,
 429     p_I420_12L_fallback,
 430     p_I420_12B_fallback,
 431     p_I420_16L_fallback,
 432     p_I420_16B_fallback,
 433     p_J420_fallback,
 434     p_I422_fallback,
 435     p_I422_9L_fallback,
 436     p_I422_9B_fallback,
 437     p_I422_10L_fallback,
 438     p_I422_10B_fallback,
 439     p_I422_12L_fallback,
 440     p_I422_12B_fallback,
 441     p_J422_fallback,
 442     p_I444_fallback,
 443     p_J444_fallback,
 444     p_I444_9L_fallback,
 445     p_I444_9B_fallback,
 446     p_I444_10L_fallback,
 447     p_I444_10B_fallback,
 448     p_I444_12L_fallback,
 449     p_I444_12B_fallback,
 450     p_I444_16L_fallback,
 451     p_I444_16B_fallback,
 452     p_I440_fallback,
 453     p_YUYV_fallback,
 454     p_YVYU_fallback,
 455     p_UYVY_fallback,
 456     p_VYUY_fallback,
 457     p_NV12_fallback,
 458     p_VDPAU_VIDEO_420_fallback,
 459     p_VDPAU_VIDEO_422_fallback,
 460     p_VDPAU_VIDEO_444_fallback,
 461
 462
 463     NULL,
 464 };
 465
 466 static const vlc_fourcc_t p_list_YUV[] = {
 467     VLC_CODEC_YUV_PLANAR_420,
 468     VLC_CODEC_YUV_SEMIPLANAR_420,
 469     VLC_CODEC_YUV_PLANAR_422,
 470     VLC_CODEC_YUV_SEMIPLANAR_422,
 471     VLC_CODEC_YUV_PLANAR_440,
 472     VLC_CODEC_YUV_PLANAR_444,
 473     VLC_CODEC_YUV_SEMIPLANAR_444,
 474     VLC_CODEC_YUV_PACKED,
 475     VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211,
 476     VLC_CODEC_YUV_PLANAR_420_16,
 477     VLC_CODEC_YUV_PLANAR_422_16,
 478     VLC_CODEC_YUV_PLANAR_444_16,
 479     VLC_CODEC_VDPAU_VIDEO_420,
 480     VLC_CODEC_VDPAU_VIDEO_422,
 481     VLC_CODEC_VDPAU_VIDEO_444,
 482     0,
 483 };
 484
 485 /* */
 486 static const vlc_fourcc_t p_RGB32_fallback[] = {
 487     VLC_CODEC_RGB32,
 488     VLC_CODEC_RGB24,
 489     VLC_CODEC_RGB16,
 490     VLC_CODEC_RGB15,
 491     VLC_CODEC_RGB8,
 492     0,
 493 };
 494 static const vlc_fourcc_t p_RGB24_fallback[] = {
 495     VLC_CODEC_RGB24,
 496     VLC_CODEC_RGB32,
 497     VLC_CODEC_RGB16,
 498     VLC_CODEC_RGB15,
 499     VLC_CODEC_RGB8,
 500     0,
 501 };
 502 static const vlc_fourcc_t p_RGB16_fallback[] = {
 503     VLC_CODEC_RGB16,
 504     VLC_CODEC_RGB24,
 505     VLC_CODEC_RGB32,
 506     VLC_CODEC_RGB15,
 507     VLC_CODEC_RGB8,
 508     0,
 509 };
 510 static const vlc_fourcc_t p_RGB15_fallback[] = {
 511     VLC_CODEC_RGB15,
 512     VLC_CODEC_RGB16,
 513     VLC_CODEC_RGB24,
 514     VLC_CODEC_RGB32,
 515     VLC_CODEC_RGB8,
 516     0,
 517 };
 518 static const vlc_fourcc_t p_RGB8_fallback[] = {
 519     VLC_CODEC_RGB8,
 520     VLC_CODEC_RGB15,
 521     VLC_CODEC_RGB16,
 522     VLC_CODEC_RGB24,
 523     VLC_CODEC_RGB32,
 524     0,
 525 };
 526 static const vlc_fourcc_t *pp_RGB_fallback[] = {
 527     p_RGB32_fallback,
 528     p_RGB24_fallback,
 529     p_RGB16_fallback,
 530     p_RGB15_fallback,
 531     p_RGB8_fallback,
 532     NULL,
 533 };
 534
 535
 536 /* */
 537 static const vlc_fourcc_t *GetFallback( vlc_fourcc_t i_fourcc,
 538                                         const vlc_fourcc_t *pp_fallback[],
 539                                         const vlc_fourcc_t p_list[] )
 540 {
 541     for( unsigned i = 0; pp_fallback[i]; i++ )
 542     {
 543         if( pp_fallback[i][0] == i_fourcc )
 544             return pp_fallback[i];
 545     }
 546     return p_list;
 547 }
 548
 549 const vlc_fourcc_t *vlc_fourcc_GetYUVFallback( vlc_fourcc_t i_fourcc )
 550 {
 551     return GetFallback( i_fourcc, pp_YUV_fallback, p_list_YUV );
 552 }
 553 const vlc_fourcc_t *vlc_fourcc_GetRGBFallback( vlc_fourcc_t i_fourcc )
 554 {
 555     return GetFallback( i_fourcc, pp_RGB_fallback, p_RGB32_fallback );
 556 }
 557
 558 bool vlc_fourcc_AreUVPlanesSwapped( vlc_fourcc_t a, vlc_fourcc_t b )
 559 {
 560     static const vlc_fourcc_t pp_swapped[][4] = {
 561         { VLC_CODEC_YV12, VLC_CODEC_I420, VLC_CODEC_J420, 0 },
 562         { VLC_CODEC_YV9,  VLC_CODEC_I410, 0 },
 563         { 0 }
 564     };
 565
 566     for( int i = 0; pp_swapped[i][0]; i++ )
 567     {
 568         if( pp_swapped[i][0] == b )
 569         {
 570             vlc_fourcc_t t = a;
 571             a = b;
 572             b = t;
 573         }
 574         if( pp_swapped[i][0] != a )
 575             continue;
 576         for( int j = 1; pp_swapped[i][j]; j++ )
 577         {
 578             if( pp_swapped[i][j] == b )
 579                 return true;
 580         }
 581     }
 582     return false;
 583 }
 584
 585 bool vlc_fourcc_IsYUV(vlc_fourcc_t fcc)
 586 {
 587     for( unsigned i = 0; p_list_YUV[i]; i++ )
 588     {
 589         if( p_list_YUV[i] == fcc )
 590             return true;
 591     }
 592     return false;
 593 }
 594
 595 #define PLANAR(n, w_den, h_den, size, bits) \
 596     { .plane_count = n, \
 597       .p = { {.w = {1,    1}, .h = {1,    1}}, \
 598              {.w = {1,w_den}, .h = {1,h_den}}, \
 599              {.w = {1,w_den}, .h = {1,h_den}}, \
 600              {.w = {1,    1}, .h = {1,    1}} }, \
 601       .pixel_size = size, \
 602       .pixel_bits = bits }
 603
 604 #define PLANAR_8(n, w_den, h_den)        PLANAR(n, w_den, h_den, 1, 8)
 605 #define PLANAR_16(n, w_den, h_den, bits) PLANAR(n, w_den, h_den, 2, bits)
 606
 607 #define PACKED_FMT(size, bits) \
 608     { .plane_count = 1, \
 609       .p = { {.w = {1,1}, .h = {1,1}} }, \
 610       .pixel_size = size, \
 611       .pixel_bits = bits }
 612
 613 /* Zero planes for hardware picture handles. Cannot be manipulated directly. */
 614 #define FAKE_FMT() \
 615     { .plane_count = 0, \
 616       .p = { {.w = {1,1}, .h = {1,1}} }, \
 617       .pixel_size = 0, \
 618       .pixel_bits = 0 }
 619
 620 static const struct
 621 {
 622     vlc_fourcc_t             p_fourcc[4];
 623     vlc_chroma_description_t description;
 624 } p_list_chroma_description[] = {
 625     { { VLC_CODEC_I411 },                      PLANAR_8(3, 4, 1) },
 626     { { VLC_CODEC_YUV_PLANAR_410 },            PLANAR_8(3, 4, 4) },
 627     { { VLC_CODEC_YUV_PLANAR_420 },            PLANAR_8(3, 2, 2) },
 628     { { VLC_CODEC_NV12, VLC_CODEC_NV21 },      PLANAR_8(2, 1, 2) },
 629     { { VLC_CODEC_YUV_PLANAR_422 },            PLANAR_8(3, 2, 1) },
 630     { { VLC_CODEC_NV16, VLC_CODEC_NV61 },      PLANAR_8(2, 1, 1) },
 631     { { VLC_CODEC_YUV_PLANAR_440 },            PLANAR_8(3, 1, 2) },
 632     { { VLC_CODEC_YUV_PLANAR_444 },            PLANAR_8(3, 1, 1) },
 633     { { VLC_CODEC_YUVA },                      PLANAR_8(4, 1, 1) },
 634     { { VLC_CODEC_YUV420A },                   PLANAR_8(4, 2, 2) },
 635     { { VLC_CODEC_YUV422A },                   PLANAR_8(4, 2, 1) },
 636
 637     { { VLC_CODEC_GBR_PLANAR },                PLANAR_8(3, 1, 1) },
 638     { { VLC_CODEC_GBR_PLANAR_9L,
 639         VLC_CODEC_GBR_PLANAR_9B },             PLANAR_16(3, 1, 1, 9) },
 640     { { VLC_CODEC_GBR_PLANAR_10L,
 641         VLC_CODEC_GBR_PLANAR_10B },            PLANAR_16(3, 1, 1, 10) },
 642
 643     { { VLC_CODEC_I420_16L,
 644         VLC_CODEC_I420_16B },                  PLANAR_16(3, 2, 2, 16) },
 645     { { VLC_CODEC_I420_12L,
 646         VLC_CODEC_I420_12B },                  PLANAR_16(3, 2, 2, 12) },
 647     { { VLC_CODEC_I420_10L,
 648         VLC_CODEC_I420_10B },                  PLANAR_16(3, 2, 2, 10) },
 649     { { VLC_CODEC_I420_9L,
 650         VLC_CODEC_I420_9B },                   PLANAR_16(3, 2, 2,  9) },
 651     { { VLC_CODEC_I422_12L,
 652         VLC_CODEC_I422_12B },                  PLANAR_16(3, 2, 1, 12) },
 653     { { VLC_CODEC_I422_10L,
 654         VLC_CODEC_I422_10B },                  PLANAR_16(3, 2, 1, 10) },
 655     { { VLC_CODEC_I422_9L,
 656         VLC_CODEC_I422_9B },                   PLANAR_16(3, 2, 1,  9) },
 657     { { VLC_CODEC_I444_12L,
 658         VLC_CODEC_I444_12B },                  PLANAR_16(3, 1, 1, 12) },
 659     { { VLC_CODEC_I444_10L,
 660         VLC_CODEC_I444_10B },                  PLANAR_16(3, 1, 1, 10) },
 661     { { VLC_CODEC_I444_9L,
 662         VLC_CODEC_I444_9B },                   PLANAR_16(3, 1, 1,  9) },
 663     { { VLC_CODEC_I444_16L,
 664         VLC_CODEC_I444_16B },                  PLANAR_16(3, 1, 1, 16) },
 665     { { VLC_CODEC_YUVA_444_10L,
 666         VLC_CODEC_YUVA_444_10B },              PLANAR_16(4, 1, 1, 10) },
 667     { { VLC_CODEC_P010 },                      PLANAR_16(2, 1, 2, 10) },
 668
 669     { { VLC_CODEC_YUV_PACKED },                PACKED_FMT(2, 16) },
 670     { { VLC_CODEC_RGB8, VLC_CODEC_GREY,
 671         VLC_CODEC_YUVP, VLC_CODEC_RGBP },      PACKED_FMT(1, 8) },
 672
 673     { { VLC_CODEC_RGB15, 0 },                  PACKED_FMT(2, 15) },
 674     { { VLC_CODEC_RGB12, 0 },                  PACKED_FMT(2, 12) },
 675     { { VLC_CODEC_RGB16, 0 },                  PACKED_FMT(2, 16) },
 676     { { VLC_CODEC_RGB24, 0 },                  PACKED_FMT(3, 24) },
 677     { { VLC_CODEC_RGB32, 0 },                  PACKED_FMT(4, 24) },
 678     { { VLC_CODEC_RGBA, VLC_CODEC_ARGB,
 679         VLC_CODEC_BGRA, },                     PACKED_FMT(4, 32) },
 680
 681     { { VLC_CODEC_Y211, 0 },                   { 1, { {{1,4}, {1,1}} }, 4, 32 } },
 682     { { VLC_CODEC_XYZ12,  0 },                 PACKED_FMT(6, 48) },
 683
 684     { { VLC_CODEC_VDPAU_VIDEO_420, VLC_CODEC_VDPAU_VIDEO_422,
 685         VLC_CODEC_VDPAU_VIDEO_444, VLC_CODEC_VDPAU_OUTPUT },
 686                                                FAKE_FMT() },
 687     { { VLC_CODEC_ANDROID_OPAQUE, VLC_CODEC_MMAL_OPAQUE,
 688         VLC_CODEC_D3D9_OPAQUE,    VLC_CODEC_D3D11_OPAQUE },
 689                                                FAKE_FMT() },
 690     { { VLC_CODEC_D3D11_OPAQUE_10B, VLC_CODEC_D3D9_OPAQUE_10B },
 691                                                FAKE_FMT() },
 692
 693     { { VLC_CODEC_CVPX_NV12, VLC_CODEC_CVPX_UYVY,
 694         VLC_CODEC_CVPX_I420, VLC_CODEC_CVPX_BGRA },
 695                                                FAKE_FMT() },
 696
 697     { { 0 },                                   FAKE_FMT() }
 698 };
 699
 700 #undef PACKED_FMT
 701 #undef PLANAR_16
 702 #undef PLANAR_8
 703 #undef PLANAR
 704
 705 const vlc_chroma_description_t *vlc_fourcc_GetChromaDescription( vlc_fourcc_t i_fourcc )
 706 {
 707     for( unsigned i = 0; p_list_chroma_description[i].p_fourcc[0]; i++ )
 708     {
 709         const vlc_fourcc_t *p_fourcc = p_list_chroma_description[i].p_fourcc;
 710         for( unsigned j = 0; j < 4 && p_fourcc[j] != 0; j++ )
 711         {
 712             if( p_fourcc[j] == i_fourcc )
 713                 return &p_list_chroma_description[i].description;
 714         }
 715     }
 716     return NULL;
 717 }