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 <stdio.h>
  23 #include <string.h>
  24 #include "pixfmt.h"
  25 #include "pixdesc.h"
  26
  27 #include "intreadwrite.h"
  28
  29 void av_read_image_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
  30                         const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
  31 {
  32     AVComponentDescriptor comp= desc->comp[c];
  33     int plane= comp.plane;
  34     int depth= comp.depth_minus1+1;
  35     int mask = (1<<depth)-1;
  36     int shift= comp.shift;
  37     int step = comp.step_minus1+1;
  38     int flags= desc->flags;
  39
  40     if (flags & PIX_FMT_BITSTREAM){
  41         int skip = x*step + comp.offset_plus1-1;
  42         const uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
  43         int shift = 8 - depth - (skip&7);
  44
  45         while(w--){
  46             int val = (*p >> shift) & mask;
  47             if(read_pal_component)
  48                 val= data[1][4*val + c];
  49             shift -= step;
  50             p -= shift>>3;
  51             shift &= 7;
  52             *dst++= val;
  53         }
  54     } else {
  55         const uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
  56
  57         while(w--){
  58             int val = flags & PIX_FMT_BE ? AV_RB16(p) : 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 av_write_image_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         .flags = PIX_FMT_PAL,
 203     },
 204     [PIX_FMT_MONOWHITE] = {
 205         .name = "monow",
 206         .nb_components= 1,
 207         .log2_chroma_w= 0,
 208         .log2_chroma_h= 0,
 209         .comp = {
 210             {0,0,1,0,0},        /* Y */
 211         },
 212         .flags = PIX_FMT_BITSTREAM,
 213     },
 214     [PIX_FMT_MONOBLACK] = {
 215         .name = "monob",
 216         .nb_components= 1,
 217         .log2_chroma_w= 0,
 218         .log2_chroma_h= 0,
 219         .comp = {
 220             {0,0,1,7,0},        /* Y */
 221         },
 222         .flags = PIX_FMT_BITSTREAM,
 223     },
 224     [PIX_FMT_PAL8] = {
 225         .name = "pal8",
 226         .nb_components= 1,
 227         .log2_chroma_w= 0,
 228         .log2_chroma_h= 0,
 229         .comp = {
 230             {0,0,1,0,7},
 231         },
 232         .flags = PIX_FMT_PAL,
 233     },
 234     [PIX_FMT_YUVJ420P] = {
 235         .name = "yuvj420p",
 236         .nb_components= 3,
 237         .log2_chroma_w= 1,
 238         .log2_chroma_h= 1,
 239         .comp = {
 240             {0,0,1,0,7},        /* Y */
 241             {1,0,1,0,7},        /* U */
 242             {2,0,1,0,7},        /* V */
 243         },
 244     },
 245     [PIX_FMT_YUVJ422P] = {
 246         .name = "yuvj422p",
 247         .nb_components= 3,
 248         .log2_chroma_w= 1,
 249         .log2_chroma_h= 0,
 250         .comp = {
 251             {0,0,1,0,7},        /* Y */
 252             {1,0,1,0,7},        /* U */
 253             {2,0,1,0,7},        /* V */
 254         },
 255     },
 256     [PIX_FMT_YUVJ444P] = {
 257         .name = "yuvj444p",
 258         .nb_components= 3,
 259         .log2_chroma_w= 0,
 260         .log2_chroma_h= 0,
 261         .comp = {
 262             {0,0,1,0,7},        /* Y */
 263             {1,0,1,0,7},        /* U */
 264             {2,0,1,0,7},        /* V */
 265         },
 266     },
 267     [PIX_FMT_XVMC_MPEG2_MC] = {
 268         .name = "xvmcmc",
 269         .flags = PIX_FMT_HWACCEL,
 270     },
 271     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 272         .name = "xvmcidct",
 273         .flags = PIX_FMT_HWACCEL,
 274     },
 275     [PIX_FMT_UYVY422] = {
 276         .name = "uyvy422",
 277         .nb_components= 3,
 278         .log2_chroma_w= 1,
 279         .log2_chroma_h= 0,
 280         .comp = {
 281             {0,1,2,0,7},        /* Y */
 282             {0,3,1,0,7},        /* U */
 283             {0,3,3,0,7},        /* V */
 284         },
 285     },
 286     [PIX_FMT_UYYVYY411] = {
 287         .name = "uyyvyy411",
 288         .nb_components= 3,
 289         .log2_chroma_w= 2,
 290         .log2_chroma_h= 0,
 291         .comp = {
 292             {0,3,2,0,7},        /* Y */
 293             {0,5,1,0,7},        /* U */
 294             {0,5,4,0,7},        /* V */
 295         },
 296     },
 297     [PIX_FMT_BGR8] = {
 298         .name = "bgr8",
 299         .nb_components= 3,
 300         .log2_chroma_w= 0,
 301         .log2_chroma_h= 0,
 302         .comp = {
 303             {0,0,1,6,1},        /* B */
 304             {0,0,1,3,2},        /* G */
 305             {0,0,1,0,2},        /* R */
 306         },
 307         .flags = PIX_FMT_PAL,
 308     },
 309     [PIX_FMT_BGR4] = {
 310         .name = "bgr4",
 311         .nb_components= 3,
 312         .log2_chroma_w= 0,
 313         .log2_chroma_h= 0,
 314         .comp = {
 315             {0,3,1,0,0},        /* B */
 316             {0,3,2,0,1},        /* G */
 317             {0,3,4,0,0},        /* R */
 318         },
 319         .flags = PIX_FMT_BITSTREAM,
 320     },
 321     [PIX_FMT_BGR4_BYTE] = {
 322         .name = "bgr4_byte",
 323         .nb_components= 3,
 324         .log2_chroma_w= 0,
 325         .log2_chroma_h= 0,
 326         .comp = {
 327             {0,0,1,3,0},        /* B */
 328             {0,0,1,1,1},        /* G */
 329             {0,0,1,0,0},        /* R */
 330         },
 331         .flags = PIX_FMT_PAL,
 332     },
 333     [PIX_FMT_RGB8] = {
 334         .name = "rgb8",
 335         .nb_components= 3,
 336         .log2_chroma_w= 0,
 337         .log2_chroma_h= 0,
 338         .comp = {
 339             {0,0,1,6,1},        /* R */
 340             {0,0,1,3,2},        /* G */
 341             {0,0,1,0,2},        /* B */
 342         },
 343         .flags = PIX_FMT_PAL,
 344     },
 345     [PIX_FMT_RGB4] = {
 346         .name = "rgb4",
 347         .nb_components= 3,
 348         .log2_chroma_w= 0,
 349         .log2_chroma_h= 0,
 350         .comp = {
 351             {0,3,1,0,0},       /* R */
 352             {0,3,2,0,1},       /* G */
 353             {0,3,4,0,0},       /* B */
 354         },
 355         .flags = PIX_FMT_BITSTREAM,
 356     },
 357     [PIX_FMT_RGB4_BYTE] = {
 358         .name = "rgb4_byte",
 359         .nb_components= 3,
 360         .log2_chroma_w= 0,
 361         .log2_chroma_h= 0,
 362         .comp = {
 363             {0,0,1,3,0},        /* R */
 364             {0,0,1,1,1},        /* G */
 365             {0,0,1,0,0},        /* B */
 366         },
 367         .flags = PIX_FMT_PAL,
 368     },
 369     [PIX_FMT_NV12] = {
 370         .name = "nv12",
 371         .nb_components= 3,
 372         .log2_chroma_w= 1,
 373         .log2_chroma_h= 1,
 374         .comp = {
 375             {0,0,1,0,7},        /* Y */
 376             {1,1,1,0,7},        /* U */
 377             {1,1,2,0,7},        /* V */
 378         },
 379     },
 380     [PIX_FMT_NV21] = {
 381         .name = "nv21",
 382         .nb_components= 3,
 383         .log2_chroma_w= 1,
 384         .log2_chroma_h= 1,
 385         .comp = {
 386             {0,0,1,0,7},        /* Y */
 387             {1,1,1,0,7},        /* V */
 388             {1,1,2,0,7},        /* U */
 389         },
 390     },
 391     [PIX_FMT_ARGB] = {
 392         .name = "argb",
 393         .nb_components= 4,
 394         .log2_chroma_w= 0,
 395         .log2_chroma_h= 0,
 396         .comp = {
 397             {0,3,1,0,7},        /* A */
 398             {0,3,2,0,7},        /* R */
 399             {0,3,3,0,7},        /* G */
 400             {0,3,4,0,7},        /* B */
 401         },
 402     },
 403     [PIX_FMT_RGBA] = {
 404         .name = "rgba",
 405         .nb_components= 4,
 406         .log2_chroma_w= 0,
 407         .log2_chroma_h= 0,
 408         .comp = {
 409             {0,3,1,0,7},        /* R */
 410             {0,3,2,0,7},        /* G */
 411             {0,3,3,0,7},        /* B */
 412             {0,3,4,0,7},        /* A */
 413         },
 414     },
 415     [PIX_FMT_ABGR] = {
 416         .name = "abgr",
 417         .nb_components= 4,
 418         .log2_chroma_w= 0,
 419         .log2_chroma_h= 0,
 420         .comp = {
 421             {0,3,1,0,7},        /* A */
 422             {0,3,2,0,7},        /* B */
 423             {0,3,3,0,7},        /* G */
 424             {0,3,4,0,7},        /* R */
 425         },
 426     },
 427     [PIX_FMT_BGRA] = {
 428         .name = "bgra",
 429         .nb_components= 4,
 430         .log2_chroma_w= 0,
 431         .log2_chroma_h= 0,
 432         .comp = {
 433             {0,3,1,0,7},        /* B */
 434             {0,3,2,0,7},        /* G */
 435             {0,3,3,0,7},        /* R */
 436             {0,3,4,0,7},        /* A */
 437         },
 438     },
 439     [PIX_FMT_GRAY16BE] = {
 440         .name = "gray16be",
 441         .nb_components= 1,
 442         .log2_chroma_w= 0,
 443         .log2_chroma_h= 0,
 444         .comp = {
 445             {0,1,1,0,15},       /* Y */
 446         },
 447         .flags = PIX_FMT_BE,
 448     },
 449     [PIX_FMT_GRAY16LE] = {
 450         .name = "gray16le",
 451         .nb_components= 1,
 452         .log2_chroma_w= 0,
 453         .log2_chroma_h= 0,
 454         .comp = {
 455             {0,1,1,0,15},       /* Y */
 456         },
 457     },
 458     [PIX_FMT_YUV440P] = {
 459         .name = "yuv440p",
 460         .nb_components= 3,
 461         .log2_chroma_w= 0,
 462         .log2_chroma_h= 1,
 463         .comp = {
 464             {0,0,1,0,7},        /* Y */
 465             {1,0,1,0,7},        /* U */
 466             {2,0,1,0,7},        /* V */
 467         },
 468     },
 469     [PIX_FMT_YUVJ440P] = {
 470         .name = "yuvj440p",
 471         .nb_components= 3,
 472         .log2_chroma_w= 0,
 473         .log2_chroma_h= 1,
 474         .comp = {
 475             {0,0,1,0,7},        /* Y */
 476             {1,0,1,0,7},        /* U */
 477             {2,0,1,0,7},        /* V */
 478         },
 479     },
 480     [PIX_FMT_YUVA420P] = {
 481         .name = "yuva420p",
 482         .nb_components= 4,
 483         .log2_chroma_w= 1,
 484         .log2_chroma_h= 1,
 485         .comp = {
 486             {0,0,1,0,7},        /* Y */
 487             {1,0,1,0,7},        /* U */
 488             {2,0,1,0,7},        /* V */
 489             {3,0,1,0,7},        /* A */
 490         },
 491     },
 492     [PIX_FMT_VDPAU_H264] = {
 493         .name = "vdpau_h264",
 494         .log2_chroma_w = 1,
 495         .log2_chroma_h = 1,
 496         .flags = PIX_FMT_HWACCEL,
 497     },
 498     [PIX_FMT_VDPAU_MPEG1] = {
 499         .name = "vdpau_mpeg1",
 500         .log2_chroma_w = 1,
 501         .log2_chroma_h = 1,
 502         .flags = PIX_FMT_HWACCEL,
 503     },
 504     [PIX_FMT_VDPAU_MPEG2] = {
 505         .name = "vdpau_mpeg2",
 506         .log2_chroma_w = 1,
 507         .log2_chroma_h = 1,
 508         .flags = PIX_FMT_HWACCEL,
 509     },
 510     [PIX_FMT_VDPAU_WMV3] = {
 511         .name = "vdpau_wmv3",
 512         .log2_chroma_w = 1,
 513         .log2_chroma_h = 1,
 514         .flags = PIX_FMT_HWACCEL,
 515     },
 516     [PIX_FMT_VDPAU_VC1] = {
 517         .name = "vdpau_vc1",
 518         .log2_chroma_w = 1,
 519         .log2_chroma_h = 1,
 520         .flags = PIX_FMT_HWACCEL,
 521     },
 522     [PIX_FMT_VDPAU_MPEG4] = {
 523         .name = "vdpau_mpeg4",
 524         .log2_chroma_w = 1,
 525         .log2_chroma_h = 1,
 526         .flags = PIX_FMT_HWACCEL,
 527     },
 528     [PIX_FMT_RGB48BE] = {
 529         .name = "rgb48be",
 530         .nb_components= 3,
 531         .log2_chroma_w= 0,
 532         .log2_chroma_h= 0,
 533         .comp = {
 534             {0,5,1,0,15},       /* R */
 535             {0,5,3,0,15},       /* G */
 536             {0,5,5,0,15},       /* B */
 537         },
 538         .flags = PIX_FMT_BE,
 539     },
 540     [PIX_FMT_RGB48LE] = {
 541         .name = "rgb48le",
 542         .nb_components= 3,
 543         .log2_chroma_w= 0,
 544         .log2_chroma_h= 0,
 545         .comp = {
 546             {0,5,1,0,15},       /* R */
 547             {0,5,3,0,15},       /* G */
 548             {0,5,5,0,15},       /* B */
 549         },
 550     },
 551     [PIX_FMT_RGB565BE] = {
 552         .name = "rgb565be",
 553         .nb_components= 3,
 554         .log2_chroma_w= 0,
 555         .log2_chroma_h= 0,
 556         .comp = {
 557             {0,1,0,3,4},        /* R */
 558             {0,1,1,5,5},        /* G */
 559             {0,1,1,0,4},        /* B */
 560         },
 561         .flags = PIX_FMT_BE,
 562     },
 563     [PIX_FMT_RGB565LE] = {
 564         .name = "rgb565le",
 565         .nb_components= 3,
 566         .log2_chroma_w= 0,
 567         .log2_chroma_h= 0,
 568         .comp = {
 569             {0,1,2,3,4},        /* R */
 570             {0,1,1,5,5},        /* G */
 571             {0,1,1,0,4},        /* B */
 572         },
 573     },
 574     [PIX_FMT_RGB555BE] = {
 575         .name = "rgb555be",
 576         .nb_components= 3,
 577         .log2_chroma_w= 0,
 578         .log2_chroma_h= 0,
 579         .comp = {
 580             {0,1,0,2,4},        /* R */
 581             {0,1,1,5,4},        /* G */
 582             {0,1,1,0,4},        /* B */
 583         },
 584         .flags = PIX_FMT_BE,
 585     },
 586     [PIX_FMT_RGB555LE] = {
 587         .name = "rgb555le",
 588         .nb_components= 3,
 589         .log2_chroma_w= 0,
 590         .log2_chroma_h= 0,
 591         .comp = {
 592             {0,1,2,2,4},        /* R */
 593             {0,1,1,5,4},        /* G */
 594             {0,1,1,0,4},        /* B */
 595         },
 596     },
 597     [PIX_FMT_RGB444BE] = {
 598         .name = "rgb444be",
 599         .nb_components= 3,
 600         .log2_chroma_w= 0,
 601         .log2_chroma_h= 0,
 602         .comp = {
 603             {0,1,0,0,3},        /* R */
 604             {0,1,1,4,3},        /* G */
 605             {0,1,1,0,3},        /* B */
 606         },
 607         .flags = PIX_FMT_BE,
 608     },
 609     [PIX_FMT_RGB444LE] = {
 610         .name = "rgb444le",
 611         .nb_components= 3,
 612         .log2_chroma_w= 0,
 613         .log2_chroma_h= 0,
 614         .comp = {
 615             {0,1,2,0,3},        /* R */
 616             {0,1,1,4,3},        /* G */
 617             {0,1,1,0,3},        /* B */
 618         },
 619     },
 620     [PIX_FMT_BGR565BE] = {
 621         .name = "bgr565be",
 622         .nb_components= 3,
 623         .log2_chroma_w= 0,
 624         .log2_chroma_h= 0,
 625         .comp = {
 626             {0,1,0,3,4},        /* B */
 627             {0,1,1,5,5},        /* G */
 628             {0,1,1,0,4},        /* R */
 629         },
 630         .flags = PIX_FMT_BE,
 631     },
 632     [PIX_FMT_BGR565LE] = {
 633         .name = "bgr565le",
 634         .nb_components= 3,
 635         .log2_chroma_w= 0,
 636         .log2_chroma_h= 0,
 637         .comp = {
 638             {0,1,2,3,4},        /* B */
 639             {0,1,1,5,5},        /* G */
 640             {0,1,1,0,4},        /* R */
 641         },
 642     },
 643     [PIX_FMT_BGR555BE] = {
 644         .name = "bgr555be",
 645         .nb_components= 3,
 646         .log2_chroma_w= 0,
 647         .log2_chroma_h= 0,
 648         .comp = {
 649             {0,1,0,2,4},       /* B */
 650             {0,1,1,5,4},       /* G */
 651             {0,1,1,0,4},       /* R */
 652         },
 653         .flags = PIX_FMT_BE,
 654      },
 655     [PIX_FMT_BGR555LE] = {
 656         .name = "bgr555le",
 657         .nb_components= 3,
 658         .log2_chroma_w= 0,
 659         .log2_chroma_h= 0,
 660         .comp = {
 661             {0,1,2,2,4},        /* B */
 662             {0,1,1,5,4},        /* G */
 663             {0,1,1,0,4},        /* R */
 664         },
 665     },
 666     [PIX_FMT_BGR444BE] = {
 667         .name = "bgr444be",
 668         .nb_components= 3,
 669         .log2_chroma_w= 0,
 670         .log2_chroma_h= 0,
 671         .comp = {
 672             {0,1,0,0,3},       /* B */
 673             {0,1,1,4,3},       /* G */
 674             {0,1,1,0,3},       /* R */
 675         },
 676         .flags = PIX_FMT_BE,
 677      },
 678     [PIX_FMT_BGR444LE] = {
 679         .name = "bgr444le",
 680         .nb_components= 3,
 681         .log2_chroma_w= 0,
 682         .log2_chroma_h= 0,
 683         .comp = {
 684             {0,1,2,0,3},        /* B */
 685             {0,1,1,4,3},        /* G */
 686             {0,1,1,0,3},        /* R */
 687         },
 688     },
 689     [PIX_FMT_VAAPI_MOCO] = {
 690         .name = "vaapi_moco",
 691         .log2_chroma_w = 1,
 692         .log2_chroma_h = 1,
 693         .flags = PIX_FMT_HWACCEL,
 694     },
 695     [PIX_FMT_VAAPI_IDCT] = {
 696         .name = "vaapi_idct",
 697         .log2_chroma_w = 1,
 698         .log2_chroma_h = 1,
 699         .flags = PIX_FMT_HWACCEL,
 700     },
 701     [PIX_FMT_VAAPI_VLD] = {
 702         .name = "vaapi_vld",
 703         .log2_chroma_w = 1,
 704         .log2_chroma_h = 1,
 705         .flags = PIX_FMT_HWACCEL,
 706     },
 707     [PIX_FMT_YUV420P16LE] = {
 708         .name = "yuv420p16le",
 709         .nb_components= 3,
 710         .log2_chroma_w= 1,
 711         .log2_chroma_h= 1,
 712         .comp = {
 713             {0,1,1,0,15},        /* Y */
 714             {1,1,1,0,15},        /* U */
 715             {2,1,1,0,15},        /* V */
 716         },
 717     },
 718     [PIX_FMT_YUV420P16BE] = {
 719         .name = "yuv420p16be",
 720         .nb_components= 3,
 721         .log2_chroma_w= 1,
 722         .log2_chroma_h= 1,
 723         .comp = {
 724             {0,1,1,0,15},        /* Y */
 725             {1,1,1,0,15},        /* U */
 726             {2,1,1,0,15},        /* V */
 727         },
 728         .flags = PIX_FMT_BE,
 729     },
 730     [PIX_FMT_YUV422P16LE] = {
 731         .name = "yuv422p16le",
 732         .nb_components= 3,
 733         .log2_chroma_w= 1,
 734         .log2_chroma_h= 0,
 735         .comp = {
 736             {0,1,1,0,15},        /* Y */
 737             {1,1,1,0,15},        /* U */
 738             {2,1,1,0,15},        /* V */
 739         },
 740     },
 741     [PIX_FMT_YUV422P16BE] = {
 742         .name = "yuv422p16be",
 743         .nb_components= 3,
 744         .log2_chroma_w= 1,
 745         .log2_chroma_h= 0,
 746         .comp = {
 747             {0,1,1,0,15},        /* Y */
 748             {1,1,1,0,15},        /* U */
 749             {2,1,1,0,15},        /* V */
 750         },
 751         .flags = PIX_FMT_BE,
 752     },
 753     [PIX_FMT_YUV444P16LE] = {
 754         .name = "yuv444p16le",
 755         .nb_components= 3,
 756         .log2_chroma_w= 0,
 757         .log2_chroma_h= 0,
 758         .comp = {
 759             {0,1,1,0,15},        /* Y */
 760             {1,1,1,0,15},        /* U */
 761             {2,1,1,0,15},        /* V */
 762         },
 763     },
 764     [PIX_FMT_YUV444P16BE] = {
 765         .name = "yuv444p16be",
 766         .nb_components= 3,
 767         .log2_chroma_w= 0,
 768         .log2_chroma_h= 0,
 769         .comp = {
 770             {0,1,1,0,15},        /* Y */
 771             {1,1,1,0,15},        /* U */
 772             {2,1,1,0,15},        /* V */
 773         },
 774         .flags = PIX_FMT_BE,
 775     },
 776     [PIX_FMT_DXVA2_VLD] = {
 777         .name = "dxva2_vld",
 778         .log2_chroma_w = 1,
 779         .log2_chroma_h = 1,
 780         .flags = PIX_FMT_HWACCEL,
 781     },
 782     [PIX_FMT_Y400A] = {
 783         .name = "y400a",
 784         .nb_components= 2,
 785         .comp = {
 786             {0,1,1,0,7},        /* Y */
 787             {0,1,2,0,7},        /* A */
 788         },
 789     },
 790 };
 791
 792 static enum PixelFormat get_pix_fmt_internal(const char *name)
 793 {
 794     enum PixelFormat pix_fmt;
 795
 796     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
 797         if (av_pix_fmt_descriptors[pix_fmt].name &&
 798             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
 799             return pix_fmt;
 800
 801     return PIX_FMT_NONE;
 802 }
 803
 804 #if HAVE_BIGENDIAN
 805 #   define X_NE(be, le) be
 806 #else
 807 #   define X_NE(be, le) le
 808 #endif
 809
 810 enum PixelFormat av_get_pix_fmt(const char *name)
 811 {
 812     enum PixelFormat pix_fmt;
 813
 814     if (!strcmp(name, "rgb32"))
 815         name = X_NE("argb", "bgra");
 816     else if (!strcmp(name, "bgr32"))
 817         name = X_NE("abgr", "rgba");
 818
 819     pix_fmt = get_pix_fmt_internal(name);
 820     if (pix_fmt == PIX_FMT_NONE) {
 821         char name2[32];
 822
 823         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
 824         pix_fmt = get_pix_fmt_internal(name2);
 825     }
 826     return pix_fmt;
 827 }
 828
 829 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
 830 {
 831     int c, bits = 0;
 832     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
 833
 834     for (c = 0; c < pixdesc->nb_components; c++) {
 835         int s = c==1 || c==2 ? 0 : log2_pixels;
 836         bits += (pixdesc->comp[c].depth_minus1+1) << s;
 837     }
 838
 839     return bits >> log2_pixels;
 840 }