git.sesse.net Git - ffmpeg/blob - libavutil/pixdesc.c

   1 /*
   2  * pixel format descriptor
   3  * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "pixfmt.h"
  23 #include "pixdesc.h"
  24
  25 #include "intreadwrite.h"
  26
  27 void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
  28                const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
  29 {
  30     AVComponentDescriptor comp= desc->comp[c];
  31     int plane= comp.plane;
  32     int depth= comp.depth_minus1+1;
  33     int mask = (1<<depth)-1;
  34     int shift= comp.shift;
  35     int step = comp.step_minus1+1;
  36     int flags= desc->flags;
  37
  38     if (flags & PIX_FMT_BITSTREAM){
  39         int skip = x*step + comp.offset_plus1-1;
  40         const uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
  41         int shift = 8 - depth - (skip&7);
  42
  43         while(w--){
  44             int val = (*p >> shift) & mask;
  45             if(read_pal_component)
  46                 val= data[1][4*val + c];
  47             shift -= step;
  48             p -= shift>>3;
  49             shift &= 7;
  50             *dst++= val;
  51         }
  52     } else {
  53         const uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
  54
  55         while(w--){
  56             int val;
  57             if(flags & PIX_FMT_BE) val= AV_RB16(p);
  58             else                   val= AV_RL16(p);
  59             val = (val>>shift) & mask;
  60             if(read_pal_component)
  61                 val= data[1][4*val + c];
  62             p+= step;
  63             *dst++= val;
  64         }
  65     }
  66 }
  67
  68 void write_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
  69                 const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
  70 {
  71     AVComponentDescriptor comp = desc->comp[c];
  72     int plane = comp.plane;
  73     int depth = comp.depth_minus1+1;
  74     int step  = comp.step_minus1+1;
  75     int flags = desc->flags;
  76
  77     if (flags & PIX_FMT_BITSTREAM) {
  78         int skip = x*step + comp.offset_plus1-1;
  79         uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
  80         int shift = 8 - depth - (skip&7);
  81
  82         while (w--) {
  83             *p |= *src++ << shift;
  84             shift -= step;
  85             p -= shift>>3;
  86             shift &= 7;
  87         }
  88     } else {
  89         int shift = comp.shift;
  90         uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
  91
  92         while (w--) {
  93             if (flags & PIX_FMT_BE) {
  94                 uint16_t val = AV_RB16(p) | (*src++<<shift);
  95                 AV_WB16(p, val);
  96             } else {
  97                 uint16_t val = AV_RL16(p) | (*src++<<shift);
  98                 AV_WL16(p, val);
  99             }
 100             p+= step;
 101         }
 102     }
 103 }
 104
 105 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
 106     [PIX_FMT_YUV420P] = {
 107         .name = "yuv420p",
 108         .nb_components= 3,
 109         .log2_chroma_w= 1,
 110         .log2_chroma_h= 1,
 111         .comp = {
 112             {0,0,1,0,7},        /* Y */
 113             {1,0,1,0,7},        /* U */
 114             {2,0,1,0,7},        /* V */
 115         },
 116     },
 117     [PIX_FMT_YUYV422] = {
 118         .name = "yuyv422",
 119         .nb_components= 3,
 120         .log2_chroma_w= 1,
 121         .log2_chroma_h= 0,
 122         .comp = {
 123             {0,1,1,0,7},        /* Y */
 124             {0,3,2,0,7},        /* U */
 125             {0,3,4,0,7},        /* V */
 126         },
 127     },
 128     [PIX_FMT_RGB24] = {
 129         .name = "rgb24",
 130         .nb_components= 3,
 131         .log2_chroma_w= 0,
 132         .log2_chroma_h= 0,
 133         .comp = {
 134             {0,2,1,0,7},        /* R */
 135             {0,2,2,0,7},        /* G */
 136             {0,2,3,0,7},        /* B */
 137         },
 138     },
 139     [PIX_FMT_BGR24] = {
 140         .name = "bgr24",
 141         .nb_components= 3,
 142         .log2_chroma_w= 0,
 143         .log2_chroma_h= 0,
 144         .comp = {
 145             {0,2,1,0,7},        /* B */
 146             {0,2,2,0,7},        /* G */
 147             {0,2,3,0,7},        /* R */
 148         },
 149     },
 150     [PIX_FMT_YUV422P] = {
 151         .name = "yuv422p",
 152         .nb_components= 3,
 153         .log2_chroma_w= 1,
 154         .log2_chroma_h= 0,
 155         .comp = {
 156             {0,0,1,0,7},        /* Y */
 157             {1,0,1,0,7},        /* U */
 158             {2,0,1,0,7},        /* V */
 159         },
 160     },
 161     [PIX_FMT_YUV444P] = {
 162         .name = "yuv444p",
 163         .nb_components= 3,
 164         .log2_chroma_w= 0,
 165         .log2_chroma_h= 0,
 166         .comp = {
 167             {0,0,1,0,7},        /* Y */
 168             {1,0,1,0,7},        /* U */
 169             {2,0,1,0,7},        /* V */
 170         },
 171     },
 172     [PIX_FMT_YUV410P] = {
 173         .name = "yuv410p",
 174         .nb_components= 3,
 175         .log2_chroma_w= 2,
 176         .log2_chroma_h= 2,
 177         .comp = {
 178             {0,0,1,0,7},        /* Y */
 179             {1,0,1,0,7},        /* U */
 180             {2,0,1,0,7},        /* V */
 181         },
 182     },
 183     [PIX_FMT_YUV411P] = {
 184         .name = "yuv411p",
 185         .nb_components= 3,
 186         .log2_chroma_w= 2,
 187         .log2_chroma_h= 0,
 188         .comp = {
 189             {0,0,1,0,7},        /* Y */
 190             {1,0,1,0,7},        /* U */
 191             {2,0,1,0,7},        /* V */
 192         },
 193     },
 194     [PIX_FMT_GRAY8] = {
 195         .name = "gray",
 196         .nb_components= 1,
 197         .log2_chroma_w= 0,
 198         .log2_chroma_h= 0,
 199         .comp = {
 200             {0,0,1,0,7},        /* Y */
 201         },
 202     },
 203     [PIX_FMT_MONOWHITE] = {
 204         .name = "monow",
 205         .nb_components= 1,
 206         .log2_chroma_w= 0,
 207         .log2_chroma_h= 0,
 208         .comp = {
 209             {0,0,1,0,0},        /* Y */
 210         },
 211         .flags = PIX_FMT_BITSTREAM,
 212     },
 213     [PIX_FMT_MONOBLACK] = {
 214         .name = "monob",
 215         .nb_components= 1,
 216         .log2_chroma_w= 0,
 217         .log2_chroma_h= 0,
 218         .comp = {
 219             {0,0,1,7,0},        /* Y */
 220         },
 221         .flags = PIX_FMT_BITSTREAM,
 222     },
 223     [PIX_FMT_PAL8] = {
 224         .name = "pal8",
 225         .nb_components= 1,
 226         .log2_chroma_w= 0,
 227         .log2_chroma_h= 0,
 228         .comp = {
 229             {0,0,1,0,7},
 230         },
 231         .flags = PIX_FMT_PAL,
 232     },
 233     [PIX_FMT_YUVJ420P] = {
 234         .name = "yuvj420p",
 235         .nb_components= 3,
 236         .log2_chroma_w= 1,
 237         .log2_chroma_h= 1,
 238         .comp = {
 239             {0,0,1,0,7},        /* Y */
 240             {1,0,1,0,7},        /* U */
 241             {2,0,1,0,7},        /* V */
 242         },
 243     },
 244     [PIX_FMT_YUVJ422P] = {
 245         .name = "yuvj422p",
 246         .nb_components= 3,
 247         .log2_chroma_w= 1,
 248         .log2_chroma_h= 0,
 249         .comp = {
 250             {0,0,1,0,7},        /* Y */
 251             {1,0,1,0,7},        /* U */
 252             {2,0,1,0,7},        /* V */
 253         },
 254     },
 255     [PIX_FMT_YUVJ444P] = {
 256         .name = "yuvj444p",
 257         .nb_components= 3,
 258         .log2_chroma_w= 0,
 259         .log2_chroma_h= 0,
 260         .comp = {
 261             {0,0,1,0,7},        /* Y */
 262             {1,0,1,0,7},        /* U */
 263             {2,0,1,0,7},        /* V */
 264         },
 265     },
 266     [PIX_FMT_XVMC_MPEG2_MC] = {
 267         .name = "xvmcmc",
 268         .flags = PIX_FMT_HWACCEL,
 269     },
 270     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 271         .name = "xvmcidct",
 272         .flags = PIX_FMT_HWACCEL,
 273     },
 274     [PIX_FMT_UYVY422] = {
 275         .name = "uyvy422",
 276         .nb_components= 3,
 277         .log2_chroma_w= 1,
 278         .log2_chroma_h= 0,
 279         .comp = {
 280             {0,1,2,0,7},        /* Y */
 281             {0,3,1,0,7},        /* U */
 282             {0,3,3,0,7},        /* V */
 283         },
 284     },
 285     [PIX_FMT_UYYVYY411] = {
 286         .name = "uyyvyy411",
 287         .nb_components= 3,
 288         .log2_chroma_w= 2,
 289         .log2_chroma_h= 0,
 290         .comp = {
 291             {0,3,2,0,7},        /* Y */
 292             {0,5,1,0,7},        /* U */
 293             {0,5,4,0,7},        /* V */
 294         },
 295     },
 296     [PIX_FMT_BGR8] = {
 297         .name = "bgr8",
 298         .nb_components= 3,
 299         .log2_chroma_w= 0,
 300         .log2_chroma_h= 0,
 301         .comp = {
 302             {0,0,1,6,1},        /* B */
 303             {0,0,1,3,2},        /* G */
 304             {0,0,1,0,2},        /* R */
 305         },
 306         .flags = PIX_FMT_PAL,
 307     },
 308     [PIX_FMT_BGR4] = {
 309         .name = "bgr4",
 310         .nb_components= 3,
 311         .log2_chroma_w= 0,
 312         .log2_chroma_h= 0,
 313         .comp = {
 314             {0,3,1,0,0},        /* B */
 315             {0,3,2,0,1},        /* G */
 316             {0,3,4,0,0},        /* R */
 317         },
 318         .flags = PIX_FMT_BITSTREAM,
 319     },
 320     [PIX_FMT_BGR4_BYTE] = {
 321         .name = "bgr4_byte",
 322         .nb_components= 3,
 323         .log2_chroma_w= 0,
 324         .log2_chroma_h= 0,
 325         .comp = {
 326             {0,0,1,3,0},        /* B */
 327             {0,0,1,1,1},        /* G */
 328             {0,0,1,0,0},        /* R */
 329         },
 330         .flags = PIX_FMT_PAL,
 331     },
 332     [PIX_FMT_RGB8] = {
 333         .name = "rgb8",
 334         .nb_components= 3,
 335         .log2_chroma_w= 0,
 336         .log2_chroma_h= 0,
 337         .comp = {
 338             {0,0,1,6,1},        /* R */
 339             {0,0,1,3,2},        /* G */
 340             {0,0,1,0,2},        /* B */
 341         },
 342         .flags = PIX_FMT_PAL,
 343     },
 344     [PIX_FMT_RGB4] = {
 345         .name = "rgb4",
 346         .nb_components= 3,
 347         .log2_chroma_w= 0,
 348         .log2_chroma_h= 0,
 349         .comp = {
 350             {0,3,1,0,0},       /* R */
 351             {0,3,2,0,1},       /* G */
 352             {0,3,4,0,0},       /* B */
 353         },
 354         .flags = PIX_FMT_BITSTREAM,
 355     },
 356     [PIX_FMT_RGB4_BYTE] = {
 357         .name = "rgb4_byte",
 358         .nb_components= 3,
 359         .log2_chroma_w= 0,
 360         .log2_chroma_h= 0,
 361         .comp = {
 362             {0,0,1,3,0},        /* R */
 363             {0,0,1,1,1},        /* G */
 364             {0,0,1,0,0},        /* B */
 365         },
 366         .flags = PIX_FMT_PAL,
 367     },
 368     [PIX_FMT_NV12] = {
 369         .name = "nv12",
 370         .nb_components= 3,
 371         .log2_chroma_w= 1,
 372         .log2_chroma_h= 1,
 373         .comp = {
 374             {0,0,1,0,7},        /* Y */
 375             {1,1,1,0,7},        /* U */
 376             {1,1,2,0,7},        /* V */
 377         },
 378     },
 379     [PIX_FMT_NV21] = {
 380         .name = "nv21",
 381         .nb_components= 3,
 382         .log2_chroma_w= 1,
 383         .log2_chroma_h= 1,
 384         .comp = {
 385             {0,0,1,0,7},        /* Y */
 386             {1,1,1,0,7},        /* V */
 387             {1,1,2,0,7},        /* U */
 388         },
 389     },
 390     [PIX_FMT_ARGB] = {
 391         .name = "argb",
 392         .nb_components= 4,
 393         .log2_chroma_w= 0,
 394         .log2_chroma_h= 0,
 395         .comp = {
 396             {0,3,1,0,7},        /* A */
 397             {0,3,2,0,7},        /* R */
 398             {0,3,3,0,7},        /* G */
 399             {0,3,4,0,7},        /* B */
 400         },
 401     },
 402     [PIX_FMT_RGBA] = {
 403         .name = "rgba",
 404         .nb_components= 4,
 405         .log2_chroma_w= 0,
 406         .log2_chroma_h= 0,
 407         .comp = {
 408             {0,3,1,0,7},        /* R */
 409             {0,3,2,0,7},        /* G */
 410             {0,3,3,0,7},        /* B */
 411             {0,3,4,0,7},        /* A */
 412         },
 413     },
 414     [PIX_FMT_ABGR] = {
 415         .name = "abgr",
 416         .nb_components= 4,
 417         .log2_chroma_w= 0,
 418         .log2_chroma_h= 0,
 419         .comp = {
 420             {0,3,1,0,7},        /* A */
 421             {0,3,2,0,7},        /* B */
 422             {0,3,3,0,7},        /* G */
 423             {0,3,4,0,7},        /* R */
 424         },
 425     },
 426     [PIX_FMT_BGRA] = {
 427         .name = "bgra",
 428         .nb_components= 4,
 429         .log2_chroma_w= 0,
 430         .log2_chroma_h= 0,
 431         .comp = {
 432             {0,3,1,0,7},        /* B */
 433             {0,3,2,0,7},        /* G */
 434             {0,3,3,0,7},        /* R */
 435             {0,3,4,0,7},        /* A */
 436         },
 437     },
 438     [PIX_FMT_GRAY16BE] = {
 439         .name = "gray16be",
 440         .nb_components= 1,
 441         .log2_chroma_w= 0,
 442         .log2_chroma_h= 0,
 443         .comp = {
 444             {0,1,1,0,15},       /* Y */
 445         },
 446         .flags = PIX_FMT_BE,
 447     },
 448     [PIX_FMT_GRAY16LE] = {
 449         .name = "gray16le",
 450         .nb_components= 1,
 451         .log2_chroma_w= 0,
 452         .log2_chroma_h= 0,
 453         .comp = {
 454             {0,1,1,0,15},       /* Y */
 455         },
 456     },
 457     [PIX_FMT_YUV440P] = {
 458         .name = "yuv440p",
 459         .nb_components= 3,
 460         .log2_chroma_w= 0,
 461         .log2_chroma_h= 1,
 462         .comp = {
 463             {0,0,1,0,7},        /* Y */
 464             {1,0,1,0,7},        /* U */
 465             {2,0,1,0,7},        /* V */
 466         },
 467     },
 468     [PIX_FMT_YUVJ440P] = {
 469         .name = "yuvj440p",
 470         .nb_components= 3,
 471         .log2_chroma_w= 0,
 472         .log2_chroma_h= 1,
 473         .comp = {
 474             {0,0,1,0,7},        /* Y */
 475             {1,0,1,0,7},        /* U */
 476             {2,0,1,0,7},        /* V */
 477         },
 478     },
 479     [PIX_FMT_YUVA420P] = {
 480         .name = "yuva420p",
 481         .nb_components= 4,
 482         .log2_chroma_w= 1,
 483         .log2_chroma_h= 1,
 484         .comp = {
 485             {0,0,1,0,7},        /* Y */
 486             {1,0,1,0,7},        /* U */
 487             {2,0,1,0,7},        /* V */
 488             {3,0,1,0,7},        /* A */
 489         },
 490     },
 491     [PIX_FMT_VDPAU_H264] = {
 492         .name = "vdpau_h264",
 493         .log2_chroma_w = 1,
 494         .log2_chroma_h = 1,
 495         .flags = PIX_FMT_HWACCEL,
 496     },
 497     [PIX_FMT_VDPAU_MPEG1] = {
 498         .name = "vdpau_mpeg1",
 499         .log2_chroma_w = 1,
 500         .log2_chroma_h = 1,
 501         .flags = PIX_FMT_HWACCEL,
 502     },
 503     [PIX_FMT_VDPAU_MPEG2] = {
 504         .name = "vdpau_mpeg2",
 505         .log2_chroma_w = 1,
 506         .log2_chroma_h = 1,
 507         .flags = PIX_FMT_HWACCEL,
 508     },
 509     [PIX_FMT_VDPAU_WMV3] = {
 510         .name = "vdpau_wmv3",
 511         .log2_chroma_w = 1,
 512         .log2_chroma_h = 1,
 513         .flags = PIX_FMT_HWACCEL,
 514     },
 515     [PIX_FMT_VDPAU_VC1] = {
 516         .name = "vdpau_vc1",
 517         .log2_chroma_w = 1,
 518         .log2_chroma_h = 1,
 519         .flags = PIX_FMT_HWACCEL,
 520     },
 521     [PIX_FMT_VDPAU_MPEG4] = {
 522         .name = "vdpau_mpeg4",
 523         .log2_chroma_w = 1,
 524         .log2_chroma_h = 1,
 525         .flags = PIX_FMT_HWACCEL,
 526     },
 527     [PIX_FMT_RGB48BE] = {
 528         .name = "rgb48be",
 529         .nb_components= 3,
 530         .log2_chroma_w= 0,
 531         .log2_chroma_h= 0,
 532         .comp = {
 533             {0,5,1,0,15},       /* R */
 534             {0,5,3,0,15},       /* G */
 535             {0,5,5,0,15},       /* B */
 536         },
 537         .flags = PIX_FMT_BE,
 538     },
 539     [PIX_FMT_RGB48LE] = {
 540         .name = "rgb48le",
 541         .nb_components= 3,
 542         .log2_chroma_w= 0,
 543         .log2_chroma_h= 0,
 544         .comp = {
 545             {0,5,1,0,15},       /* R */
 546             {0,5,3,0,15},       /* G */
 547             {0,5,5,0,15},       /* B */
 548         },
 549     },
 550     [PIX_FMT_RGB565BE] = {
 551         .name = "rgb565be",
 552         .nb_components= 3,
 553         .log2_chroma_w= 0,
 554         .log2_chroma_h= 0,
 555         .comp = {
 556             {0,1,0,3,4},        /* R */
 557             {0,1,1,5,5},        /* G */
 558             {0,1,1,0,4},        /* B */
 559         },
 560         .flags = PIX_FMT_BE,
 561     },
 562     [PIX_FMT_RGB565LE] = {
 563         .name = "rgb565le",
 564         .nb_components= 3,
 565         .log2_chroma_w= 0,
 566         .log2_chroma_h= 0,
 567         .comp = {
 568             {0,1,2,3,4},        /* R */
 569             {0,1,1,5,5},        /* G */
 570             {0,1,1,0,4},        /* B */
 571         },
 572     },
 573     [PIX_FMT_RGB555BE] = {
 574         .name = "rgb555be",
 575         .nb_components= 3,
 576         .log2_chroma_w= 0,
 577         .log2_chroma_h= 0,
 578         .comp = {
 579             {0,1,0,2,4},        /* R */
 580             {0,1,1,5,4},        /* G */
 581             {0,1,1,0,4},        /* B */
 582         },
 583         .flags = PIX_FMT_BE,
 584     },
 585     [PIX_FMT_RGB555LE] = {
 586         .name = "rgb555le",
 587         .nb_components= 3,
 588         .log2_chroma_w= 0,
 589         .log2_chroma_h= 0,
 590         .comp = {
 591             {0,1,2,2,4},        /* R */
 592             {0,1,1,5,4},        /* G */
 593             {0,1,1,0,4},        /* B */
 594         },
 595     },
 596     [PIX_FMT_BGR565BE] = {
 597         .name = "bgr565be",
 598         .nb_components= 3,
 599         .log2_chroma_w= 0,
 600         .log2_chroma_h= 0,
 601         .comp = {
 602             {0,1,0,3,4},        /* B */
 603             {0,1,1,5,5},        /* G */
 604             {0,1,1,0,4},        /* R */
 605         },
 606         .flags = PIX_FMT_BE,
 607     },
 608     [PIX_FMT_BGR565LE] = {
 609         .name = "bgr565le",
 610         .nb_components= 3,
 611         .log2_chroma_w= 0,
 612         .log2_chroma_h= 0,
 613         .comp = {
 614             {0,1,2,3,4},        /* B */
 615             {0,1,1,5,5},        /* G */
 616             {0,1,1,0,4},        /* R */
 617         },
 618     },
 619     [PIX_FMT_BGR555BE] = {
 620         .name = "bgr555be",
 621         .nb_components= 3,
 622         .log2_chroma_w= 0,
 623         .log2_chroma_h= 0,
 624         .comp = {
 625             {0,1,0,2,4},       /* B */
 626             {0,1,1,5,4},       /* G */
 627             {0,1,1,0,4},       /* R */
 628         },
 629         .flags = PIX_FMT_BE,
 630      },
 631     [PIX_FMT_BGR555LE] = {
 632         .name = "bgr555le",
 633         .nb_components= 3,
 634         .log2_chroma_w= 0,
 635         .log2_chroma_h= 0,
 636         .comp = {
 637             {0,1,2,2,4},        /* B */
 638             {0,1,1,5,4},        /* G */
 639             {0,1,1,0,4},        /* R */
 640         },
 641     },
 642     [PIX_FMT_VAAPI_MOCO] = {
 643         .name = "vaapi_moco",
 644         .log2_chroma_w = 1,
 645         .log2_chroma_h = 1,
 646         .flags = PIX_FMT_HWACCEL,
 647     },
 648     [PIX_FMT_VAAPI_IDCT] = {
 649         .name = "vaapi_idct",
 650         .log2_chroma_w = 1,
 651         .log2_chroma_h = 1,
 652         .flags = PIX_FMT_HWACCEL,
 653     },
 654     [PIX_FMT_VAAPI_VLD] = {
 655         .name = "vaapi_vld",
 656         .log2_chroma_w = 1,
 657         .log2_chroma_h = 1,
 658         .flags = PIX_FMT_HWACCEL,
 659     },
 660     [PIX_FMT_YUV420P16LE] = {
 661         .name = "yuv420p16le",
 662         .nb_components= 3,
 663         .log2_chroma_w= 1,
 664         .log2_chroma_h= 1,
 665         .comp = {
 666             {0,1,1,0,15},        /* Y */
 667             {1,1,1,0,15},        /* U */
 668             {2,1,1,0,15},        /* V */
 669         },
 670     },
 671     [PIX_FMT_YUV420P16BE] = {
 672         .name = "yuv420p16be",
 673         .nb_components= 3,
 674         .log2_chroma_w= 1,
 675         .log2_chroma_h= 1,
 676         .comp = {
 677             {0,1,1,0,15},        /* Y */
 678             {1,1,1,0,15},        /* U */
 679             {2,1,1,0,15},        /* V */
 680         },
 681         .flags = PIX_FMT_BE,
 682     },
 683     [PIX_FMT_YUV422P16LE] = {
 684         .name = "yuv422p16le",
 685         .nb_components= 3,
 686         .log2_chroma_w= 1,
 687         .log2_chroma_h= 0,
 688         .comp = {
 689             {0,1,1,0,15},        /* Y */
 690             {1,1,1,0,15},        /* U */
 691             {2,1,1,0,15},        /* V */
 692         },
 693     },
 694     [PIX_FMT_YUV422P16BE] = {
 695         .name = "yuv422p16be",
 696         .nb_components= 3,
 697         .log2_chroma_w= 1,
 698         .log2_chroma_h= 0,
 699         .comp = {
 700             {0,1,1,0,15},        /* Y */
 701             {1,1,1,0,15},        /* U */
 702             {2,1,1,0,15},        /* V */
 703         },
 704         .flags = PIX_FMT_BE,
 705     },
 706     [PIX_FMT_YUV444P16LE] = {
 707         .name = "yuv444p16le",
 708         .nb_components= 3,
 709         .log2_chroma_w= 0,
 710         .log2_chroma_h= 0,
 711         .comp = {
 712             {0,1,1,0,15},        /* Y */
 713             {1,1,1,0,15},        /* U */
 714             {2,1,1,0,15},        /* V */
 715         },
 716     },
 717     [PIX_FMT_YUV444P16BE] = {
 718         .name = "yuv444p16be",
 719         .nb_components= 3,
 720         .log2_chroma_w= 0,
 721         .log2_chroma_h= 0,
 722         .comp = {
 723             {0,1,1,0,15},        /* Y */
 724             {1,1,1,0,15},        /* U */
 725             {2,1,1,0,15},        /* V */
 726         },
 727         .flags = PIX_FMT_BE,
 728     },
 729     [PIX_FMT_DXVA2_VLD] = {
 730         .name = "dxva2_vld",
 731         .log2_chroma_w = 1,
 732         .log2_chroma_h = 1,
 733         .flags = PIX_FMT_HWACCEL,
 734     },
 735 };
 736
 737 static enum PixelFormat get_pix_fmt_internal(const char *name)
 738 {
 739     enum PixelFormat pix_fmt;
 740
 741     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
 742         if (av_pix_fmt_descriptors[pix_fmt].name &&
 743             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
 744             return pix_fmt;
 745
 746     return PIX_FMT_NONE;
 747 }
 748
 749 #if HAVE_BIGENDIAN
 750 #   define X_NE(be, le) be
 751 #else
 752 #   define X_NE(be, le) le
 753 #endif
 754
 755 enum PixelFormat av_get_pix_fmt(const char *name)
 756 {
 757     enum PixelFormat pix_fmt;
 758
 759     if (!strcmp(name, "rgb32"))
 760         name = X_NE("argb", "bgra");
 761     else if (!strcmp(name, "bgr32"))
 762         name = X_NE("abgr", "rgba");
 763
 764     pix_fmt = get_pix_fmt_internal(name);
 765     if (pix_fmt == PIX_FMT_NONE) {
 766         char name2[32];
 767
 768         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
 769         pix_fmt = get_pix_fmt_internal(name2);
 770     }
 771     return pix_fmt;
 772 }
 773
 774 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
 775 {
 776     int c, bits = 0;
 777     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
 778
 779     for (c = 0; c < pixdesc->nb_components; c++) {
 780         int s = c==1 || c==2 ? 0 : log2_pixels;
 781         bits += (pixdesc->comp[c].depth_minus1+1) << s;
 782     }
 783
 784     return bits >> log2_pixels;
 785 }