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         int is_8bit = 0;
  57
  58         if (shift + depth <= 8) {
  59             p += !!(flags & PIX_FMT_BE);
  60             is_8bit = 1;
  61         }
  62         while(w--){
  63             int val = is_8bit ? *p :
  64                 flags & PIX_FMT_BE ? AV_RB16(p) : AV_RL16(p);
  65             val = (val>>shift) & mask;
  66             if(read_pal_component)
  67                 val= data[1][4*val + c];
  68             p+= step;
  69             *dst++= val;
  70         }
  71     }
  72 }
  73
  74 void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
  75                          const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
  76 {
  77     AVComponentDescriptor comp = desc->comp[c];
  78     int plane = comp.plane;
  79     int depth = comp.depth_minus1+1;
  80     int step  = comp.step_minus1+1;
  81     int flags = desc->flags;
  82
  83     if (flags & PIX_FMT_BITSTREAM) {
  84         int skip = x*step + comp.offset_plus1-1;
  85         uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
  86         int shift = 8 - depth - (skip&7);
  87
  88         while (w--) {
  89             *p |= *src++ << shift;
  90             shift -= step;
  91             p -= shift>>3;
  92             shift &= 7;
  93         }
  94     } else {
  95         int shift = comp.shift;
  96         uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
  97
  98         if (shift + depth <= 8) {
  99             p += !!(flags & PIX_FMT_BE);
 100             while (w--) {
 101                 *p |= (*src++<<shift);
 102                 p += step;
 103             }
 104         } else {
 105         while (w--) {
 106             if (flags & PIX_FMT_BE) {
 107                 uint16_t val = AV_RB16(p) | (*src++<<shift);
 108                 AV_WB16(p, val);
 109             } else {
 110                 uint16_t val = AV_RL16(p) | (*src++<<shift);
 111                 AV_WL16(p, val);
 112             }
 113             p+= step;
 114         }
 115         }
 116     }
 117 }
 118
 119 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
 120     [PIX_FMT_YUV420P] = {
 121         .name = "yuv420p",
 122         .nb_components= 3,
 123         .log2_chroma_w= 1,
 124         .log2_chroma_h= 1,
 125         .comp = {
 126             {0,0,1,0,7},        /* Y */
 127             {1,0,1,0,7},        /* U */
 128             {2,0,1,0,7},        /* V */
 129         },
 130     },
 131     [PIX_FMT_YUYV422] = {
 132         .name = "yuyv422",
 133         .nb_components= 3,
 134         .log2_chroma_w= 1,
 135         .log2_chroma_h= 0,
 136         .comp = {
 137             {0,1,1,0,7},        /* Y */
 138             {0,3,2,0,7},        /* U */
 139             {0,3,4,0,7},        /* V */
 140         },
 141     },
 142     [PIX_FMT_RGB24] = {
 143         .name = "rgb24",
 144         .nb_components= 3,
 145         .log2_chroma_w= 0,
 146         .log2_chroma_h= 0,
 147         .comp = {
 148             {0,2,1,0,7},        /* R */
 149             {0,2,2,0,7},        /* G */
 150             {0,2,3,0,7},        /* B */
 151         },
 152     },
 153     [PIX_FMT_BGR24] = {
 154         .name = "bgr24",
 155         .nb_components= 3,
 156         .log2_chroma_w= 0,
 157         .log2_chroma_h= 0,
 158         .comp = {
 159             {0,2,1,0,7},        /* B */
 160             {0,2,2,0,7},        /* G */
 161             {0,2,3,0,7},        /* R */
 162         },
 163     },
 164     [PIX_FMT_YUV422P] = {
 165         .name = "yuv422p",
 166         .nb_components= 3,
 167         .log2_chroma_w= 1,
 168         .log2_chroma_h= 0,
 169         .comp = {
 170             {0,0,1,0,7},        /* Y */
 171             {1,0,1,0,7},        /* U */
 172             {2,0,1,0,7},        /* V */
 173         },
 174     },
 175     [PIX_FMT_YUV444P] = {
 176         .name = "yuv444p",
 177         .nb_components= 3,
 178         .log2_chroma_w= 0,
 179         .log2_chroma_h= 0,
 180         .comp = {
 181             {0,0,1,0,7},        /* Y */
 182             {1,0,1,0,7},        /* U */
 183             {2,0,1,0,7},        /* V */
 184         },
 185     },
 186     [PIX_FMT_YUV410P] = {
 187         .name = "yuv410p",
 188         .nb_components= 3,
 189         .log2_chroma_w= 2,
 190         .log2_chroma_h= 2,
 191         .comp = {
 192             {0,0,1,0,7},        /* Y */
 193             {1,0,1,0,7},        /* U */
 194             {2,0,1,0,7},        /* V */
 195         },
 196     },
 197     [PIX_FMT_YUV411P] = {
 198         .name = "yuv411p",
 199         .nb_components= 3,
 200         .log2_chroma_w= 2,
 201         .log2_chroma_h= 0,
 202         .comp = {
 203             {0,0,1,0,7},        /* Y */
 204             {1,0,1,0,7},        /* U */
 205             {2,0,1,0,7},        /* V */
 206         },
 207     },
 208     [PIX_FMT_GRAY8] = {
 209         .name = "gray",
 210         .nb_components= 1,
 211         .log2_chroma_w= 0,
 212         .log2_chroma_h= 0,
 213         .comp = {
 214             {0,0,1,0,7},        /* Y */
 215         },
 216         .flags = PIX_FMT_PAL,
 217     },
 218     [PIX_FMT_MONOWHITE] = {
 219         .name = "monow",
 220         .nb_components= 1,
 221         .log2_chroma_w= 0,
 222         .log2_chroma_h= 0,
 223         .comp = {
 224             {0,0,1,0,0},        /* Y */
 225         },
 226         .flags = PIX_FMT_BITSTREAM,
 227     },
 228     [PIX_FMT_MONOBLACK] = {
 229         .name = "monob",
 230         .nb_components= 1,
 231         .log2_chroma_w= 0,
 232         .log2_chroma_h= 0,
 233         .comp = {
 234             {0,0,1,7,0},        /* Y */
 235         },
 236         .flags = PIX_FMT_BITSTREAM,
 237     },
 238     [PIX_FMT_PAL8] = {
 239         .name = "pal8",
 240         .nb_components= 1,
 241         .log2_chroma_w= 0,
 242         .log2_chroma_h= 0,
 243         .comp = {
 244             {0,0,1,0,7},
 245         },
 246         .flags = PIX_FMT_PAL,
 247     },
 248     [PIX_FMT_YUVJ420P] = {
 249         .name = "yuvj420p",
 250         .nb_components= 3,
 251         .log2_chroma_w= 1,
 252         .log2_chroma_h= 1,
 253         .comp = {
 254             {0,0,1,0,7},        /* Y */
 255             {1,0,1,0,7},        /* U */
 256             {2,0,1,0,7},        /* V */
 257         },
 258     },
 259     [PIX_FMT_YUVJ422P] = {
 260         .name = "yuvj422p",
 261         .nb_components= 3,
 262         .log2_chroma_w= 1,
 263         .log2_chroma_h= 0,
 264         .comp = {
 265             {0,0,1,0,7},        /* Y */
 266             {1,0,1,0,7},        /* U */
 267             {2,0,1,0,7},        /* V */
 268         },
 269     },
 270     [PIX_FMT_YUVJ444P] = {
 271         .name = "yuvj444p",
 272         .nb_components= 3,
 273         .log2_chroma_w= 0,
 274         .log2_chroma_h= 0,
 275         .comp = {
 276             {0,0,1,0,7},        /* Y */
 277             {1,0,1,0,7},        /* U */
 278             {2,0,1,0,7},        /* V */
 279         },
 280     },
 281     [PIX_FMT_XVMC_MPEG2_MC] = {
 282         .name = "xvmcmc",
 283         .flags = PIX_FMT_HWACCEL,
 284     },
 285     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 286         .name = "xvmcidct",
 287         .flags = PIX_FMT_HWACCEL,
 288     },
 289     [PIX_FMT_UYVY422] = {
 290         .name = "uyvy422",
 291         .nb_components= 3,
 292         .log2_chroma_w= 1,
 293         .log2_chroma_h= 0,
 294         .comp = {
 295             {0,1,2,0,7},        /* Y */
 296             {0,3,1,0,7},        /* U */
 297             {0,3,3,0,7},        /* V */
 298         },
 299     },
 300     [PIX_FMT_UYYVYY411] = {
 301         .name = "uyyvyy411",
 302         .nb_components= 3,
 303         .log2_chroma_w= 2,
 304         .log2_chroma_h= 0,
 305         .comp = {
 306             {0,3,2,0,7},        /* Y */
 307             {0,5,1,0,7},        /* U */
 308             {0,5,4,0,7},        /* V */
 309         },
 310     },
 311     [PIX_FMT_BGR8] = {
 312         .name = "bgr8",
 313         .nb_components= 3,
 314         .log2_chroma_w= 0,
 315         .log2_chroma_h= 0,
 316         .comp = {
 317             {0,0,1,6,1},        /* B */
 318             {0,0,1,3,2},        /* G */
 319             {0,0,1,0,2},        /* R */
 320         },
 321         .flags = PIX_FMT_PAL,
 322     },
 323     [PIX_FMT_BGR4] = {
 324         .name = "bgr4",
 325         .nb_components= 3,
 326         .log2_chroma_w= 0,
 327         .log2_chroma_h= 0,
 328         .comp = {
 329             {0,3,1,0,0},        /* B */
 330             {0,3,2,0,1},        /* G */
 331             {0,3,4,0,0},        /* R */
 332         },
 333         .flags = PIX_FMT_BITSTREAM,
 334     },
 335     [PIX_FMT_BGR4_BYTE] = {
 336         .name = "bgr4_byte",
 337         .nb_components= 3,
 338         .log2_chroma_w= 0,
 339         .log2_chroma_h= 0,
 340         .comp = {
 341             {0,0,1,3,0},        /* B */
 342             {0,0,1,1,1},        /* G */
 343             {0,0,1,0,0},        /* R */
 344         },
 345         .flags = PIX_FMT_PAL,
 346     },
 347     [PIX_FMT_RGB8] = {
 348         .name = "rgb8",
 349         .nb_components= 3,
 350         .log2_chroma_w= 0,
 351         .log2_chroma_h= 0,
 352         .comp = {
 353             {0,0,1,6,1},        /* R */
 354             {0,0,1,3,2},        /* G */
 355             {0,0,1,0,2},        /* B */
 356         },
 357         .flags = PIX_FMT_PAL,
 358     },
 359     [PIX_FMT_RGB4] = {
 360         .name = "rgb4",
 361         .nb_components= 3,
 362         .log2_chroma_w= 0,
 363         .log2_chroma_h= 0,
 364         .comp = {
 365             {0,3,1,0,0},       /* R */
 366             {0,3,2,0,1},       /* G */
 367             {0,3,4,0,0},       /* B */
 368         },
 369         .flags = PIX_FMT_BITSTREAM,
 370     },
 371     [PIX_FMT_RGB4_BYTE] = {
 372         .name = "rgb4_byte",
 373         .nb_components= 3,
 374         .log2_chroma_w= 0,
 375         .log2_chroma_h= 0,
 376         .comp = {
 377             {0,0,1,3,0},        /* R */
 378             {0,0,1,1,1},        /* G */
 379             {0,0,1,0,0},        /* B */
 380         },
 381         .flags = PIX_FMT_PAL,
 382     },
 383     [PIX_FMT_NV12] = {
 384         .name = "nv12",
 385         .nb_components= 3,
 386         .log2_chroma_w= 1,
 387         .log2_chroma_h= 1,
 388         .comp = {
 389             {0,0,1,0,7},        /* Y */
 390             {1,1,1,0,7},        /* U */
 391             {1,1,2,0,7},        /* V */
 392         },
 393     },
 394     [PIX_FMT_NV21] = {
 395         .name = "nv21",
 396         .nb_components= 3,
 397         .log2_chroma_w= 1,
 398         .log2_chroma_h= 1,
 399         .comp = {
 400             {0,0,1,0,7},        /* Y */
 401             {1,1,1,0,7},        /* V */
 402             {1,1,2,0,7},        /* U */
 403         },
 404     },
 405     [PIX_FMT_ARGB] = {
 406         .name = "argb",
 407         .nb_components= 4,
 408         .log2_chroma_w= 0,
 409         .log2_chroma_h= 0,
 410         .comp = {
 411             {0,3,1,0,7},        /* A */
 412             {0,3,2,0,7},        /* R */
 413             {0,3,3,0,7},        /* G */
 414             {0,3,4,0,7},        /* B */
 415         },
 416     },
 417     [PIX_FMT_RGBA] = {
 418         .name = "rgba",
 419         .nb_components= 4,
 420         .log2_chroma_w= 0,
 421         .log2_chroma_h= 0,
 422         .comp = {
 423             {0,3,1,0,7},        /* R */
 424             {0,3,2,0,7},        /* G */
 425             {0,3,3,0,7},        /* B */
 426             {0,3,4,0,7},        /* A */
 427         },
 428     },
 429     [PIX_FMT_ABGR] = {
 430         .name = "abgr",
 431         .nb_components= 4,
 432         .log2_chroma_w= 0,
 433         .log2_chroma_h= 0,
 434         .comp = {
 435             {0,3,1,0,7},        /* A */
 436             {0,3,2,0,7},        /* B */
 437             {0,3,3,0,7},        /* G */
 438             {0,3,4,0,7},        /* R */
 439         },
 440     },
 441     [PIX_FMT_BGRA] = {
 442         .name = "bgra",
 443         .nb_components= 4,
 444         .log2_chroma_w= 0,
 445         .log2_chroma_h= 0,
 446         .comp = {
 447             {0,3,1,0,7},        /* B */
 448             {0,3,2,0,7},        /* G */
 449             {0,3,3,0,7},        /* R */
 450             {0,3,4,0,7},        /* A */
 451         },
 452     },
 453     [PIX_FMT_GRAY16BE] = {
 454         .name = "gray16be",
 455         .nb_components= 1,
 456         .log2_chroma_w= 0,
 457         .log2_chroma_h= 0,
 458         .comp = {
 459             {0,1,1,0,15},       /* Y */
 460         },
 461         .flags = PIX_FMT_BE,
 462     },
 463     [PIX_FMT_GRAY16LE] = {
 464         .name = "gray16le",
 465         .nb_components= 1,
 466         .log2_chroma_w= 0,
 467         .log2_chroma_h= 0,
 468         .comp = {
 469             {0,1,1,0,15},       /* Y */
 470         },
 471     },
 472     [PIX_FMT_YUV440P] = {
 473         .name = "yuv440p",
 474         .nb_components= 3,
 475         .log2_chroma_w= 0,
 476         .log2_chroma_h= 1,
 477         .comp = {
 478             {0,0,1,0,7},        /* Y */
 479             {1,0,1,0,7},        /* U */
 480             {2,0,1,0,7},        /* V */
 481         },
 482     },
 483     [PIX_FMT_YUVJ440P] = {
 484         .name = "yuvj440p",
 485         .nb_components= 3,
 486         .log2_chroma_w= 0,
 487         .log2_chroma_h= 1,
 488         .comp = {
 489             {0,0,1,0,7},        /* Y */
 490             {1,0,1,0,7},        /* U */
 491             {2,0,1,0,7},        /* V */
 492         },
 493     },
 494     [PIX_FMT_YUVA420P] = {
 495         .name = "yuva420p",
 496         .nb_components= 4,
 497         .log2_chroma_w= 1,
 498         .log2_chroma_h= 1,
 499         .comp = {
 500             {0,0,1,0,7},        /* Y */
 501             {1,0,1,0,7},        /* U */
 502             {2,0,1,0,7},        /* V */
 503             {3,0,1,0,7},        /* A */
 504         },
 505     },
 506     [PIX_FMT_VDPAU_H264] = {
 507         .name = "vdpau_h264",
 508         .log2_chroma_w = 1,
 509         .log2_chroma_h = 1,
 510         .flags = PIX_FMT_HWACCEL,
 511     },
 512     [PIX_FMT_VDPAU_MPEG1] = {
 513         .name = "vdpau_mpeg1",
 514         .log2_chroma_w = 1,
 515         .log2_chroma_h = 1,
 516         .flags = PIX_FMT_HWACCEL,
 517     },
 518     [PIX_FMT_VDPAU_MPEG2] = {
 519         .name = "vdpau_mpeg2",
 520         .log2_chroma_w = 1,
 521         .log2_chroma_h = 1,
 522         .flags = PIX_FMT_HWACCEL,
 523     },
 524     [PIX_FMT_VDPAU_WMV3] = {
 525         .name = "vdpau_wmv3",
 526         .log2_chroma_w = 1,
 527         .log2_chroma_h = 1,
 528         .flags = PIX_FMT_HWACCEL,
 529     },
 530     [PIX_FMT_VDPAU_VC1] = {
 531         .name = "vdpau_vc1",
 532         .log2_chroma_w = 1,
 533         .log2_chroma_h = 1,
 534         .flags = PIX_FMT_HWACCEL,
 535     },
 536     [PIX_FMT_VDPAU_MPEG4] = {
 537         .name = "vdpau_mpeg4",
 538         .log2_chroma_w = 1,
 539         .log2_chroma_h = 1,
 540         .flags = PIX_FMT_HWACCEL,
 541     },
 542     [PIX_FMT_RGB48BE] = {
 543         .name = "rgb48be",
 544         .nb_components= 3,
 545         .log2_chroma_w= 0,
 546         .log2_chroma_h= 0,
 547         .comp = {
 548             {0,5,1,0,15},       /* R */
 549             {0,5,3,0,15},       /* G */
 550             {0,5,5,0,15},       /* B */
 551         },
 552         .flags = PIX_FMT_BE,
 553     },
 554     [PIX_FMT_RGB48LE] = {
 555         .name = "rgb48le",
 556         .nb_components= 3,
 557         .log2_chroma_w= 0,
 558         .log2_chroma_h= 0,
 559         .comp = {
 560             {0,5,1,0,15},       /* R */
 561             {0,5,3,0,15},       /* G */
 562             {0,5,5,0,15},       /* B */
 563         },
 564     },
 565     [PIX_FMT_RGB565BE] = {
 566         .name = "rgb565be",
 567         .nb_components= 3,
 568         .log2_chroma_w= 0,
 569         .log2_chroma_h= 0,
 570         .comp = {
 571             {0,1,0,3,4},        /* R */
 572             {0,1,1,5,5},        /* G */
 573             {0,1,1,0,4},        /* B */
 574         },
 575         .flags = PIX_FMT_BE,
 576     },
 577     [PIX_FMT_RGB565LE] = {
 578         .name = "rgb565le",
 579         .nb_components= 3,
 580         .log2_chroma_w= 0,
 581         .log2_chroma_h= 0,
 582         .comp = {
 583             {0,1,2,3,4},        /* R */
 584             {0,1,1,5,5},        /* G */
 585             {0,1,1,0,4},        /* B */
 586         },
 587     },
 588     [PIX_FMT_RGB555BE] = {
 589         .name = "rgb555be",
 590         .nb_components= 3,
 591         .log2_chroma_w= 0,
 592         .log2_chroma_h= 0,
 593         .comp = {
 594             {0,1,0,2,4},        /* R */
 595             {0,1,1,5,4},        /* G */
 596             {0,1,1,0,4},        /* B */
 597         },
 598         .flags = PIX_FMT_BE,
 599     },
 600     [PIX_FMT_RGB555LE] = {
 601         .name = "rgb555le",
 602         .nb_components= 3,
 603         .log2_chroma_w= 0,
 604         .log2_chroma_h= 0,
 605         .comp = {
 606             {0,1,2,2,4},        /* R */
 607             {0,1,1,5,4},        /* G */
 608             {0,1,1,0,4},        /* B */
 609         },
 610     },
 611     [PIX_FMT_RGB444BE] = {
 612         .name = "rgb444be",
 613         .nb_components= 3,
 614         .log2_chroma_w= 0,
 615         .log2_chroma_h= 0,
 616         .comp = {
 617             {0,1,0,0,3},        /* R */
 618             {0,1,1,4,3},        /* G */
 619             {0,1,1,0,3},        /* B */
 620         },
 621         .flags = PIX_FMT_BE,
 622     },
 623     [PIX_FMT_RGB444LE] = {
 624         .name = "rgb444le",
 625         .nb_components= 3,
 626         .log2_chroma_w= 0,
 627         .log2_chroma_h= 0,
 628         .comp = {
 629             {0,1,2,0,3},        /* R */
 630             {0,1,1,4,3},        /* G */
 631             {0,1,1,0,3},        /* B */
 632         },
 633     },
 634     [PIX_FMT_BGR565BE] = {
 635         .name = "bgr565be",
 636         .nb_components= 3,
 637         .log2_chroma_w= 0,
 638         .log2_chroma_h= 0,
 639         .comp = {
 640             {0,1,0,3,4},        /* B */
 641             {0,1,1,5,5},        /* G */
 642             {0,1,1,0,4},        /* R */
 643         },
 644         .flags = PIX_FMT_BE,
 645     },
 646     [PIX_FMT_BGR565LE] = {
 647         .name = "bgr565le",
 648         .nb_components= 3,
 649         .log2_chroma_w= 0,
 650         .log2_chroma_h= 0,
 651         .comp = {
 652             {0,1,2,3,4},        /* B */
 653             {0,1,1,5,5},        /* G */
 654             {0,1,1,0,4},        /* R */
 655         },
 656     },
 657     [PIX_FMT_BGR555BE] = {
 658         .name = "bgr555be",
 659         .nb_components= 3,
 660         .log2_chroma_w= 0,
 661         .log2_chroma_h= 0,
 662         .comp = {
 663             {0,1,0,2,4},       /* B */
 664             {0,1,1,5,4},       /* G */
 665             {0,1,1,0,4},       /* R */
 666         },
 667         .flags = PIX_FMT_BE,
 668      },
 669     [PIX_FMT_BGR555LE] = {
 670         .name = "bgr555le",
 671         .nb_components= 3,
 672         .log2_chroma_w= 0,
 673         .log2_chroma_h= 0,
 674         .comp = {
 675             {0,1,2,2,4},        /* B */
 676             {0,1,1,5,4},        /* G */
 677             {0,1,1,0,4},        /* R */
 678         },
 679     },
 680     [PIX_FMT_BGR444BE] = {
 681         .name = "bgr444be",
 682         .nb_components= 3,
 683         .log2_chroma_w= 0,
 684         .log2_chroma_h= 0,
 685         .comp = {
 686             {0,1,0,0,3},       /* B */
 687             {0,1,1,4,3},       /* G */
 688             {0,1,1,0,3},       /* R */
 689         },
 690         .flags = PIX_FMT_BE,
 691      },
 692     [PIX_FMT_BGR444LE] = {
 693         .name = "bgr444le",
 694         .nb_components= 3,
 695         .log2_chroma_w= 0,
 696         .log2_chroma_h= 0,
 697         .comp = {
 698             {0,1,2,0,3},        /* B */
 699             {0,1,1,4,3},        /* G */
 700             {0,1,1,0,3},        /* R */
 701         },
 702     },
 703     [PIX_FMT_VAAPI_MOCO] = {
 704         .name = "vaapi_moco",
 705         .log2_chroma_w = 1,
 706         .log2_chroma_h = 1,
 707         .flags = PIX_FMT_HWACCEL,
 708     },
 709     [PIX_FMT_VAAPI_IDCT] = {
 710         .name = "vaapi_idct",
 711         .log2_chroma_w = 1,
 712         .log2_chroma_h = 1,
 713         .flags = PIX_FMT_HWACCEL,
 714     },
 715     [PIX_FMT_VAAPI_VLD] = {
 716         .name = "vaapi_vld",
 717         .log2_chroma_w = 1,
 718         .log2_chroma_h = 1,
 719         .flags = PIX_FMT_HWACCEL,
 720     },
 721     [PIX_FMT_YUV420P16LE] = {
 722         .name = "yuv420p16le",
 723         .nb_components= 3,
 724         .log2_chroma_w= 1,
 725         .log2_chroma_h= 1,
 726         .comp = {
 727             {0,1,1,0,15},        /* Y */
 728             {1,1,1,0,15},        /* U */
 729             {2,1,1,0,15},        /* V */
 730         },
 731     },
 732     [PIX_FMT_YUV420P16BE] = {
 733         .name = "yuv420p16be",
 734         .nb_components= 3,
 735         .log2_chroma_w= 1,
 736         .log2_chroma_h= 1,
 737         .comp = {
 738             {0,1,1,0,15},        /* Y */
 739             {1,1,1,0,15},        /* U */
 740             {2,1,1,0,15},        /* V */
 741         },
 742         .flags = PIX_FMT_BE,
 743     },
 744     [PIX_FMT_YUV422P16LE] = {
 745         .name = "yuv422p16le",
 746         .nb_components= 3,
 747         .log2_chroma_w= 1,
 748         .log2_chroma_h= 0,
 749         .comp = {
 750             {0,1,1,0,15},        /* Y */
 751             {1,1,1,0,15},        /* U */
 752             {2,1,1,0,15},        /* V */
 753         },
 754     },
 755     [PIX_FMT_YUV422P16BE] = {
 756         .name = "yuv422p16be",
 757         .nb_components= 3,
 758         .log2_chroma_w= 1,
 759         .log2_chroma_h= 0,
 760         .comp = {
 761             {0,1,1,0,15},        /* Y */
 762             {1,1,1,0,15},        /* U */
 763             {2,1,1,0,15},        /* V */
 764         },
 765         .flags = PIX_FMT_BE,
 766     },
 767     [PIX_FMT_YUV444P16LE] = {
 768         .name = "yuv444p16le",
 769         .nb_components= 3,
 770         .log2_chroma_w= 0,
 771         .log2_chroma_h= 0,
 772         .comp = {
 773             {0,1,1,0,15},        /* Y */
 774             {1,1,1,0,15},        /* U */
 775             {2,1,1,0,15},        /* V */
 776         },
 777     },
 778     [PIX_FMT_YUV444P16BE] = {
 779         .name = "yuv444p16be",
 780         .nb_components= 3,
 781         .log2_chroma_w= 0,
 782         .log2_chroma_h= 0,
 783         .comp = {
 784             {0,1,1,0,15},        /* Y */
 785             {1,1,1,0,15},        /* U */
 786             {2,1,1,0,15},        /* V */
 787         },
 788         .flags = PIX_FMT_BE,
 789     },
 790     [PIX_FMT_DXVA2_VLD] = {
 791         .name = "dxva2_vld",
 792         .log2_chroma_w = 1,
 793         .log2_chroma_h = 1,
 794         .flags = PIX_FMT_HWACCEL,
 795     },
 796     [PIX_FMT_Y400A] = {
 797         .name = "y400a",
 798         .nb_components= 2,
 799         .comp = {
 800             {0,1,1,0,7},        /* Y */
 801             {0,1,2,0,7},        /* A */
 802         },
 803     },
 804 };
 805
 806 static enum PixelFormat get_pix_fmt_internal(const char *name)
 807 {
 808     enum PixelFormat pix_fmt;
 809
 810     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
 811         if (av_pix_fmt_descriptors[pix_fmt].name &&
 812             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
 813             return pix_fmt;
 814
 815     return PIX_FMT_NONE;
 816 }
 817
 818 #if HAVE_BIGENDIAN
 819 #   define X_NE(be, le) be
 820 #else
 821 #   define X_NE(be, le) le
 822 #endif
 823
 824 enum PixelFormat av_get_pix_fmt(const char *name)
 825 {
 826     enum PixelFormat pix_fmt;
 827
 828     if (!strcmp(name, "rgb32"))
 829         name = X_NE("argb", "bgra");
 830     else if (!strcmp(name, "bgr32"))
 831         name = X_NE("abgr", "rgba");
 832
 833     pix_fmt = get_pix_fmt_internal(name);
 834     if (pix_fmt == PIX_FMT_NONE) {
 835         char name2[32];
 836
 837         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
 838         pix_fmt = get_pix_fmt_internal(name2);
 839     }
 840     return pix_fmt;
 841 }
 842
 843 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
 844 {
 845     int c, bits = 0;
 846     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
 847
 848     for (c = 0; c < pixdesc->nb_components; c++) {
 849         int s = c==1 || c==2 ? 0 : log2_pixels;
 850         bits += (pixdesc->comp[c].depth_minus1+1) << s;
 851     }
 852
 853     return bits >> log2_pixels;
 854 }