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 = shift + depth <= 8;
  57
  58         if (is_8bit)
  59             p += !!(flags & PIX_FMT_BE);
  60
  61         while(w--){
  62             int val = is_8bit ? *p :
  63                 flags & PIX_FMT_BE ? AV_RB16(p) : AV_RL16(p);
  64             val = (val>>shift) & mask;
  65             if(read_pal_component)
  66                 val= data[1][4*val + c];
  67             p+= step;
  68             *dst++= val;
  69         }
  70     }
  71 }
  72
  73 void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
  74                          const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
  75 {
  76     AVComponentDescriptor comp = desc->comp[c];
  77     int plane = comp.plane;
  78     int depth = comp.depth_minus1+1;
  79     int step  = comp.step_minus1+1;
  80     int flags = desc->flags;
  81
  82     if (flags & PIX_FMT_BITSTREAM) {
  83         int skip = x*step + comp.offset_plus1-1;
  84         uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
  85         int shift = 8 - depth - (skip&7);
  86
  87         while (w--) {
  88             *p |= *src++ << shift;
  89             shift -= step;
  90             p -= shift>>3;
  91             shift &= 7;
  92         }
  93     } else {
  94         int shift = comp.shift;
  95         uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
  96
  97         if (shift + depth <= 8) {
  98             p += !!(flags & PIX_FMT_BE);
  99             while (w--) {
 100                 *p |= (*src++<<shift);
 101                 p += step;
 102             }
 103         } else {
 104             while (w--) {
 105                 if (flags & PIX_FMT_BE) {
 106                     uint16_t val = AV_RB16(p) | (*src++<<shift);
 107                     AV_WB16(p, val);
 108                 } else {
 109                     uint16_t val = AV_RL16(p) | (*src++<<shift);
 110                     AV_WL16(p, val);
 111                 }
 112                 p+= step;
 113             }
 114         }
 115     }
 116 }
 117
 118 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
 119     [PIX_FMT_YUV420P] = {
 120         .name = "yuv420p",
 121         .nb_components= 3,
 122         .log2_chroma_w= 1,
 123         .log2_chroma_h= 1,
 124         .comp = {
 125             {0,0,1,0,7},        /* Y */
 126             {1,0,1,0,7},        /* U */
 127             {2,0,1,0,7},        /* V */
 128         },
 129     },
 130     [PIX_FMT_YUYV422] = {
 131         .name = "yuyv422",
 132         .nb_components= 3,
 133         .log2_chroma_w= 1,
 134         .log2_chroma_h= 0,
 135         .comp = {
 136             {0,1,1,0,7},        /* Y */
 137             {0,3,2,0,7},        /* U */
 138             {0,3,4,0,7},        /* V */
 139         },
 140     },
 141     [PIX_FMT_RGB24] = {
 142         .name = "rgb24",
 143         .nb_components= 3,
 144         .log2_chroma_w= 0,
 145         .log2_chroma_h= 0,
 146         .comp = {
 147             {0,2,1,0,7},        /* R */
 148             {0,2,2,0,7},        /* G */
 149             {0,2,3,0,7},        /* B */
 150         },
 151     },
 152     [PIX_FMT_BGR24] = {
 153         .name = "bgr24",
 154         .nb_components= 3,
 155         .log2_chroma_w= 0,
 156         .log2_chroma_h= 0,
 157         .comp = {
 158             {0,2,1,0,7},        /* B */
 159             {0,2,2,0,7},        /* G */
 160             {0,2,3,0,7},        /* R */
 161         },
 162     },
 163     [PIX_FMT_YUV422P] = {
 164         .name = "yuv422p",
 165         .nb_components= 3,
 166         .log2_chroma_w= 1,
 167         .log2_chroma_h= 0,
 168         .comp = {
 169             {0,0,1,0,7},        /* Y */
 170             {1,0,1,0,7},        /* U */
 171             {2,0,1,0,7},        /* V */
 172         },
 173     },
 174     [PIX_FMT_YUV444P] = {
 175         .name = "yuv444p",
 176         .nb_components= 3,
 177         .log2_chroma_w= 0,
 178         .log2_chroma_h= 0,
 179         .comp = {
 180             {0,0,1,0,7},        /* Y */
 181             {1,0,1,0,7},        /* U */
 182             {2,0,1,0,7},        /* V */
 183         },
 184     },
 185     [PIX_FMT_YUV410P] = {
 186         .name = "yuv410p",
 187         .nb_components= 3,
 188         .log2_chroma_w= 2,
 189         .log2_chroma_h= 2,
 190         .comp = {
 191             {0,0,1,0,7},        /* Y */
 192             {1,0,1,0,7},        /* U */
 193             {2,0,1,0,7},        /* V */
 194         },
 195     },
 196     [PIX_FMT_YUV411P] = {
 197         .name = "yuv411p",
 198         .nb_components= 3,
 199         .log2_chroma_w= 2,
 200         .log2_chroma_h= 0,
 201         .comp = {
 202             {0,0,1,0,7},        /* Y */
 203             {1,0,1,0,7},        /* U */
 204             {2,0,1,0,7},        /* V */
 205         },
 206     },
 207     [PIX_FMT_GRAY8] = {
 208         .name = "gray",
 209         .nb_components= 1,
 210         .log2_chroma_w= 0,
 211         .log2_chroma_h= 0,
 212         .comp = {
 213             {0,0,1,0,7},        /* Y */
 214         },
 215         .flags = PIX_FMT_PAL,
 216     },
 217     [PIX_FMT_MONOWHITE] = {
 218         .name = "monow",
 219         .nb_components= 1,
 220         .log2_chroma_w= 0,
 221         .log2_chroma_h= 0,
 222         .comp = {
 223             {0,0,1,0,0},        /* Y */
 224         },
 225         .flags = PIX_FMT_BITSTREAM,
 226     },
 227     [PIX_FMT_MONOBLACK] = {
 228         .name = "monob",
 229         .nb_components= 1,
 230         .log2_chroma_w= 0,
 231         .log2_chroma_h= 0,
 232         .comp = {
 233             {0,0,1,7,0},        /* Y */
 234         },
 235         .flags = PIX_FMT_BITSTREAM,
 236     },
 237     [PIX_FMT_PAL8] = {
 238         .name = "pal8",
 239         .nb_components= 1,
 240         .log2_chroma_w= 0,
 241         .log2_chroma_h= 0,
 242         .comp = {
 243             {0,0,1,0,7},
 244         },
 245         .flags = PIX_FMT_PAL,
 246     },
 247     [PIX_FMT_YUVJ420P] = {
 248         .name = "yuvj420p",
 249         .nb_components= 3,
 250         .log2_chroma_w= 1,
 251         .log2_chroma_h= 1,
 252         .comp = {
 253             {0,0,1,0,7},        /* Y */
 254             {1,0,1,0,7},        /* U */
 255             {2,0,1,0,7},        /* V */
 256         },
 257     },
 258     [PIX_FMT_YUVJ422P] = {
 259         .name = "yuvj422p",
 260         .nb_components= 3,
 261         .log2_chroma_w= 1,
 262         .log2_chroma_h= 0,
 263         .comp = {
 264             {0,0,1,0,7},        /* Y */
 265             {1,0,1,0,7},        /* U */
 266             {2,0,1,0,7},        /* V */
 267         },
 268     },
 269     [PIX_FMT_YUVJ444P] = {
 270         .name = "yuvj444p",
 271         .nb_components= 3,
 272         .log2_chroma_w= 0,
 273         .log2_chroma_h= 0,
 274         .comp = {
 275             {0,0,1,0,7},        /* Y */
 276             {1,0,1,0,7},        /* U */
 277             {2,0,1,0,7},        /* V */
 278         },
 279     },
 280     [PIX_FMT_XVMC_MPEG2_MC] = {
 281         .name = "xvmcmc",
 282         .flags = PIX_FMT_HWACCEL,
 283     },
 284     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 285         .name = "xvmcidct",
 286         .flags = PIX_FMT_HWACCEL,
 287     },
 288     [PIX_FMT_UYVY422] = {
 289         .name = "uyvy422",
 290         .nb_components= 3,
 291         .log2_chroma_w= 1,
 292         .log2_chroma_h= 0,
 293         .comp = {
 294             {0,1,2,0,7},        /* Y */
 295             {0,3,1,0,7},        /* U */
 296             {0,3,3,0,7},        /* V */
 297         },
 298     },
 299     [PIX_FMT_UYYVYY411] = {
 300         .name = "uyyvyy411",
 301         .nb_components= 3,
 302         .log2_chroma_w= 2,
 303         .log2_chroma_h= 0,
 304         .comp = {
 305             {0,3,2,0,7},        /* Y */
 306             {0,5,1,0,7},        /* U */
 307             {0,5,4,0,7},        /* V */
 308         },
 309     },
 310     [PIX_FMT_BGR8] = {
 311         .name = "bgr8",
 312         .nb_components= 3,
 313         .log2_chroma_w= 0,
 314         .log2_chroma_h= 0,
 315         .comp = {
 316             {0,0,1,6,1},        /* B */
 317             {0,0,1,3,2},        /* G */
 318             {0,0,1,0,2},        /* R */
 319         },
 320         .flags = PIX_FMT_PAL,
 321     },
 322     [PIX_FMT_BGR4] = {
 323         .name = "bgr4",
 324         .nb_components= 3,
 325         .log2_chroma_w= 0,
 326         .log2_chroma_h= 0,
 327         .comp = {
 328             {0,3,1,0,0},        /* B */
 329             {0,3,2,0,1},        /* G */
 330             {0,3,4,0,0},        /* R */
 331         },
 332         .flags = PIX_FMT_BITSTREAM,
 333     },
 334     [PIX_FMT_BGR4_BYTE] = {
 335         .name = "bgr4_byte",
 336         .nb_components= 3,
 337         .log2_chroma_w= 0,
 338         .log2_chroma_h= 0,
 339         .comp = {
 340             {0,0,1,3,0},        /* B */
 341             {0,0,1,1,1},        /* G */
 342             {0,0,1,0,0},        /* R */
 343         },
 344         .flags = PIX_FMT_PAL,
 345     },
 346     [PIX_FMT_RGB8] = {
 347         .name = "rgb8",
 348         .nb_components= 3,
 349         .log2_chroma_w= 0,
 350         .log2_chroma_h= 0,
 351         .comp = {
 352             {0,0,1,6,1},        /* R */
 353             {0,0,1,3,2},        /* G */
 354             {0,0,1,0,2},        /* B */
 355         },
 356         .flags = PIX_FMT_PAL,
 357     },
 358     [PIX_FMT_RGB4] = {
 359         .name = "rgb4",
 360         .nb_components= 3,
 361         .log2_chroma_w= 0,
 362         .log2_chroma_h= 0,
 363         .comp = {
 364             {0,3,1,0,0},       /* R */
 365             {0,3,2,0,1},       /* G */
 366             {0,3,4,0,0},       /* B */
 367         },
 368         .flags = PIX_FMT_BITSTREAM,
 369     },
 370     [PIX_FMT_RGB4_BYTE] = {
 371         .name = "rgb4_byte",
 372         .nb_components= 3,
 373         .log2_chroma_w= 0,
 374         .log2_chroma_h= 0,
 375         .comp = {
 376             {0,0,1,3,0},        /* R */
 377             {0,0,1,1,1},        /* G */
 378             {0,0,1,0,0},        /* B */
 379         },
 380         .flags = PIX_FMT_PAL,
 381     },
 382     [PIX_FMT_NV12] = {
 383         .name = "nv12",
 384         .nb_components= 3,
 385         .log2_chroma_w= 1,
 386         .log2_chroma_h= 1,
 387         .comp = {
 388             {0,0,1,0,7},        /* Y */
 389             {1,1,1,0,7},        /* U */
 390             {1,1,2,0,7},        /* V */
 391         },
 392     },
 393     [PIX_FMT_NV21] = {
 394         .name = "nv21",
 395         .nb_components= 3,
 396         .log2_chroma_w= 1,
 397         .log2_chroma_h= 1,
 398         .comp = {
 399             {0,0,1,0,7},        /* Y */
 400             {1,1,1,0,7},        /* V */
 401             {1,1,2,0,7},        /* U */
 402         },
 403     },
 404     [PIX_FMT_ARGB] = {
 405         .name = "argb",
 406         .nb_components= 4,
 407         .log2_chroma_w= 0,
 408         .log2_chroma_h= 0,
 409         .comp = {
 410             {0,3,1,0,7},        /* A */
 411             {0,3,2,0,7},        /* R */
 412             {0,3,3,0,7},        /* G */
 413             {0,3,4,0,7},        /* B */
 414         },
 415     },
 416     [PIX_FMT_RGBA] = {
 417         .name = "rgba",
 418         .nb_components= 4,
 419         .log2_chroma_w= 0,
 420         .log2_chroma_h= 0,
 421         .comp = {
 422             {0,3,1,0,7},        /* R */
 423             {0,3,2,0,7},        /* G */
 424             {0,3,3,0,7},        /* B */
 425             {0,3,4,0,7},        /* A */
 426         },
 427     },
 428     [PIX_FMT_ABGR] = {
 429         .name = "abgr",
 430         .nb_components= 4,
 431         .log2_chroma_w= 0,
 432         .log2_chroma_h= 0,
 433         .comp = {
 434             {0,3,1,0,7},        /* A */
 435             {0,3,2,0,7},        /* B */
 436             {0,3,3,0,7},        /* G */
 437             {0,3,4,0,7},        /* R */
 438         },
 439     },
 440     [PIX_FMT_BGRA] = {
 441         .name = "bgra",
 442         .nb_components= 4,
 443         .log2_chroma_w= 0,
 444         .log2_chroma_h= 0,
 445         .comp = {
 446             {0,3,1,0,7},        /* B */
 447             {0,3,2,0,7},        /* G */
 448             {0,3,3,0,7},        /* R */
 449             {0,3,4,0,7},        /* A */
 450         },
 451     },
 452     [PIX_FMT_GRAY16BE] = {
 453         .name = "gray16be",
 454         .nb_components= 1,
 455         .log2_chroma_w= 0,
 456         .log2_chroma_h= 0,
 457         .comp = {
 458             {0,1,1,0,15},       /* Y */
 459         },
 460         .flags = PIX_FMT_BE,
 461     },
 462     [PIX_FMT_GRAY16LE] = {
 463         .name = "gray16le",
 464         .nb_components= 1,
 465         .log2_chroma_w= 0,
 466         .log2_chroma_h= 0,
 467         .comp = {
 468             {0,1,1,0,15},       /* Y */
 469         },
 470     },
 471     [PIX_FMT_YUV440P] = {
 472         .name = "yuv440p",
 473         .nb_components= 3,
 474         .log2_chroma_w= 0,
 475         .log2_chroma_h= 1,
 476         .comp = {
 477             {0,0,1,0,7},        /* Y */
 478             {1,0,1,0,7},        /* U */
 479             {2,0,1,0,7},        /* V */
 480         },
 481     },
 482     [PIX_FMT_YUVJ440P] = {
 483         .name = "yuvj440p",
 484         .nb_components= 3,
 485         .log2_chroma_w= 0,
 486         .log2_chroma_h= 1,
 487         .comp = {
 488             {0,0,1,0,7},        /* Y */
 489             {1,0,1,0,7},        /* U */
 490             {2,0,1,0,7},        /* V */
 491         },
 492     },
 493     [PIX_FMT_YUVA420P] = {
 494         .name = "yuva420p",
 495         .nb_components= 4,
 496         .log2_chroma_w= 1,
 497         .log2_chroma_h= 1,
 498         .comp = {
 499             {0,0,1,0,7},        /* Y */
 500             {1,0,1,0,7},        /* U */
 501             {2,0,1,0,7},        /* V */
 502             {3,0,1,0,7},        /* A */
 503         },
 504     },
 505     [PIX_FMT_VDPAU_H264] = {
 506         .name = "vdpau_h264",
 507         .log2_chroma_w = 1,
 508         .log2_chroma_h = 1,
 509         .flags = PIX_FMT_HWACCEL,
 510     },
 511     [PIX_FMT_VDPAU_MPEG1] = {
 512         .name = "vdpau_mpeg1",
 513         .log2_chroma_w = 1,
 514         .log2_chroma_h = 1,
 515         .flags = PIX_FMT_HWACCEL,
 516     },
 517     [PIX_FMT_VDPAU_MPEG2] = {
 518         .name = "vdpau_mpeg2",
 519         .log2_chroma_w = 1,
 520         .log2_chroma_h = 1,
 521         .flags = PIX_FMT_HWACCEL,
 522     },
 523     [PIX_FMT_VDPAU_WMV3] = {
 524         .name = "vdpau_wmv3",
 525         .log2_chroma_w = 1,
 526         .log2_chroma_h = 1,
 527         .flags = PIX_FMT_HWACCEL,
 528     },
 529     [PIX_FMT_VDPAU_VC1] = {
 530         .name = "vdpau_vc1",
 531         .log2_chroma_w = 1,
 532         .log2_chroma_h = 1,
 533         .flags = PIX_FMT_HWACCEL,
 534     },
 535     [PIX_FMT_VDPAU_MPEG4] = {
 536         .name = "vdpau_mpeg4",
 537         .log2_chroma_w = 1,
 538         .log2_chroma_h = 1,
 539         .flags = PIX_FMT_HWACCEL,
 540     },
 541     [PIX_FMT_RGB48BE] = {
 542         .name = "rgb48be",
 543         .nb_components= 3,
 544         .log2_chroma_w= 0,
 545         .log2_chroma_h= 0,
 546         .comp = {
 547             {0,5,1,0,15},       /* R */
 548             {0,5,3,0,15},       /* G */
 549             {0,5,5,0,15},       /* B */
 550         },
 551         .flags = PIX_FMT_BE,
 552     },
 553     [PIX_FMT_RGB48LE] = {
 554         .name = "rgb48le",
 555         .nb_components= 3,
 556         .log2_chroma_w= 0,
 557         .log2_chroma_h= 0,
 558         .comp = {
 559             {0,5,1,0,15},       /* R */
 560             {0,5,3,0,15},       /* G */
 561             {0,5,5,0,15},       /* B */
 562         },
 563     },
 564     [PIX_FMT_RGB565BE] = {
 565         .name = "rgb565be",
 566         .nb_components= 3,
 567         .log2_chroma_w= 0,
 568         .log2_chroma_h= 0,
 569         .comp = {
 570             {0,1,0,3,4},        /* R */
 571             {0,1,1,5,5},        /* G */
 572             {0,1,1,0,4},        /* B */
 573         },
 574         .flags = PIX_FMT_BE,
 575     },
 576     [PIX_FMT_RGB565LE] = {
 577         .name = "rgb565le",
 578         .nb_components= 3,
 579         .log2_chroma_w= 0,
 580         .log2_chroma_h= 0,
 581         .comp = {
 582             {0,1,2,3,4},        /* R */
 583             {0,1,1,5,5},        /* G */
 584             {0,1,1,0,4},        /* B */
 585         },
 586     },
 587     [PIX_FMT_RGB555BE] = {
 588         .name = "rgb555be",
 589         .nb_components= 3,
 590         .log2_chroma_w= 0,
 591         .log2_chroma_h= 0,
 592         .comp = {
 593             {0,1,0,2,4},        /* R */
 594             {0,1,1,5,4},        /* G */
 595             {0,1,1,0,4},        /* B */
 596         },
 597         .flags = PIX_FMT_BE,
 598     },
 599     [PIX_FMT_RGB555LE] = {
 600         .name = "rgb555le",
 601         .nb_components= 3,
 602         .log2_chroma_w= 0,
 603         .log2_chroma_h= 0,
 604         .comp = {
 605             {0,1,2,2,4},        /* R */
 606             {0,1,1,5,4},        /* G */
 607             {0,1,1,0,4},        /* B */
 608         },
 609     },
 610     [PIX_FMT_RGB444BE] = {
 611         .name = "rgb444be",
 612         .nb_components= 3,
 613         .log2_chroma_w= 0,
 614         .log2_chroma_h= 0,
 615         .comp = {
 616             {0,1,0,0,3},        /* R */
 617             {0,1,1,4,3},        /* G */
 618             {0,1,1,0,3},        /* B */
 619         },
 620         .flags = PIX_FMT_BE,
 621     },
 622     [PIX_FMT_RGB444LE] = {
 623         .name = "rgb444le",
 624         .nb_components= 3,
 625         .log2_chroma_w= 0,
 626         .log2_chroma_h= 0,
 627         .comp = {
 628             {0,1,2,0,3},        /* R */
 629             {0,1,1,4,3},        /* G */
 630             {0,1,1,0,3},        /* B */
 631         },
 632     },
 633     [PIX_FMT_BGR48BE] = {
 634         .name = "bgr48be",
 635         .nb_components= 3,
 636         .log2_chroma_w= 0,
 637         .log2_chroma_h= 0,
 638         .comp = {
 639             {0,5,1,0,15},       /* B */
 640             {0,5,3,0,15},       /* G */
 641             {0,5,5,0,15},       /* R */
 642         },
 643         .flags = PIX_FMT_BE,
 644     },
 645     [PIX_FMT_BGR48LE] = {
 646         .name = "bgr48le",
 647         .nb_components= 3,
 648         .log2_chroma_w= 0,
 649         .log2_chroma_h= 0,
 650         .comp = {
 651             {0,5,1,0,15},       /* B */
 652             {0,5,3,0,15},       /* G */
 653             {0,5,5,0,15},       /* R */
 654         },
 655     },
 656     [PIX_FMT_BGR565BE] = {
 657         .name = "bgr565be",
 658         .nb_components= 3,
 659         .log2_chroma_w= 0,
 660         .log2_chroma_h= 0,
 661         .comp = {
 662             {0,1,0,3,4},        /* B */
 663             {0,1,1,5,5},        /* G */
 664             {0,1,1,0,4},        /* R */
 665         },
 666         .flags = PIX_FMT_BE,
 667     },
 668     [PIX_FMT_BGR565LE] = {
 669         .name = "bgr565le",
 670         .nb_components= 3,
 671         .log2_chroma_w= 0,
 672         .log2_chroma_h= 0,
 673         .comp = {
 674             {0,1,2,3,4},        /* B */
 675             {0,1,1,5,5},        /* G */
 676             {0,1,1,0,4},        /* R */
 677         },
 678     },
 679     [PIX_FMT_BGR555BE] = {
 680         .name = "bgr555be",
 681         .nb_components= 3,
 682         .log2_chroma_w= 0,
 683         .log2_chroma_h= 0,
 684         .comp = {
 685             {0,1,0,2,4},       /* B */
 686             {0,1,1,5,4},       /* G */
 687             {0,1,1,0,4},       /* R */
 688         },
 689         .flags = PIX_FMT_BE,
 690      },
 691     [PIX_FMT_BGR555LE] = {
 692         .name = "bgr555le",
 693         .nb_components= 3,
 694         .log2_chroma_w= 0,
 695         .log2_chroma_h= 0,
 696         .comp = {
 697             {0,1,2,2,4},        /* B */
 698             {0,1,1,5,4},        /* G */
 699             {0,1,1,0,4},        /* R */
 700         },
 701     },
 702     [PIX_FMT_BGR444BE] = {
 703         .name = "bgr444be",
 704         .nb_components= 3,
 705         .log2_chroma_w= 0,
 706         .log2_chroma_h= 0,
 707         .comp = {
 708             {0,1,0,0,3},       /* B */
 709             {0,1,1,4,3},       /* G */
 710             {0,1,1,0,3},       /* R */
 711         },
 712         .flags = PIX_FMT_BE,
 713      },
 714     [PIX_FMT_BGR444LE] = {
 715         .name = "bgr444le",
 716         .nb_components= 3,
 717         .log2_chroma_w= 0,
 718         .log2_chroma_h= 0,
 719         .comp = {
 720             {0,1,2,0,3},        /* B */
 721             {0,1,1,4,3},        /* G */
 722             {0,1,1,0,3},        /* R */
 723         },
 724     },
 725     [PIX_FMT_VAAPI_MOCO] = {
 726         .name = "vaapi_moco",
 727         .log2_chroma_w = 1,
 728         .log2_chroma_h = 1,
 729         .flags = PIX_FMT_HWACCEL,
 730     },
 731     [PIX_FMT_VAAPI_IDCT] = {
 732         .name = "vaapi_idct",
 733         .log2_chroma_w = 1,
 734         .log2_chroma_h = 1,
 735         .flags = PIX_FMT_HWACCEL,
 736     },
 737     [PIX_FMT_VAAPI_VLD] = {
 738         .name = "vaapi_vld",
 739         .log2_chroma_w = 1,
 740         .log2_chroma_h = 1,
 741         .flags = PIX_FMT_HWACCEL,
 742     },
 743     [PIX_FMT_YUV420P9LE] = {
 744         .name = "yuv420p9le",
 745         .nb_components= 3,
 746         .log2_chroma_w= 1,
 747         .log2_chroma_h= 1,
 748         .comp = {
 749             {0,1,1,0,8},        /* Y */
 750             {1,1,1,0,8},        /* U */
 751             {2,1,1,0,8},        /* V */
 752         },
 753     },
 754     [PIX_FMT_YUV420P9BE] = {
 755         .name = "yuv420p9be",
 756         .nb_components= 3,
 757         .log2_chroma_w= 1,
 758         .log2_chroma_h= 1,
 759         .comp = {
 760             {0,1,1,0,8},        /* Y */
 761             {1,1,1,0,8},        /* U */
 762             {2,1,1,0,8},        /* V */
 763         },
 764         .flags = PIX_FMT_BE,
 765     },
 766     [PIX_FMT_YUV420P10LE] = {
 767         .name = "yuv420p10le",
 768         .nb_components= 3,
 769         .log2_chroma_w= 1,
 770         .log2_chroma_h= 1,
 771         .comp = {
 772             {0,1,1,0,9},        /* Y */
 773             {1,1,1,0,9},        /* U */
 774             {2,1,1,0,9},        /* V */
 775         },
 776     },
 777     [PIX_FMT_YUV420P10BE] = {
 778         .name = "yuv420p10be",
 779         .nb_components= 3,
 780         .log2_chroma_w= 1,
 781         .log2_chroma_h= 1,
 782         .comp = {
 783             {0,1,1,0,9},        /* Y */
 784             {1,1,1,0,9},        /* U */
 785             {2,1,1,0,9},        /* V */
 786         },
 787         .flags = PIX_FMT_BE,
 788     },
 789     [PIX_FMT_YUV420P16LE] = {
 790         .name = "yuv420p16le",
 791         .nb_components= 3,
 792         .log2_chroma_w= 1,
 793         .log2_chroma_h= 1,
 794         .comp = {
 795             {0,1,1,0,15},        /* Y */
 796             {1,1,1,0,15},        /* U */
 797             {2,1,1,0,15},        /* V */
 798         },
 799     },
 800     [PIX_FMT_YUV420P16BE] = {
 801         .name = "yuv420p16be",
 802         .nb_components= 3,
 803         .log2_chroma_w= 1,
 804         .log2_chroma_h= 1,
 805         .comp = {
 806             {0,1,1,0,15},        /* Y */
 807             {1,1,1,0,15},        /* U */
 808             {2,1,1,0,15},        /* V */
 809         },
 810         .flags = PIX_FMT_BE,
 811     },
 812     [PIX_FMT_YUV422P10LE] = {
 813         .name = "yuv422p10le",
 814         .nb_components= 3,
 815         .log2_chroma_w= 1,
 816         .log2_chroma_h= 0,
 817         .comp = {
 818             {0,1,1,0,9},        /* Y */
 819             {1,1,1,0,9},        /* U */
 820             {2,1,1,0,9},        /* V */
 821         },
 822     },
 823     [PIX_FMT_YUV422P10BE] = {
 824         .name = "yuv422p10be",
 825         .nb_components= 3,
 826         .log2_chroma_w= 1,
 827         .log2_chroma_h= 0,
 828         .comp = {
 829             {0,1,1,0,9},        /* Y */
 830             {1,1,1,0,9},        /* U */
 831             {2,1,1,0,9},        /* V */
 832         },
 833         .flags = PIX_FMT_BE,
 834     },
 835     [PIX_FMT_YUV422P16LE] = {
 836         .name = "yuv422p16le",
 837         .nb_components= 3,
 838         .log2_chroma_w= 1,
 839         .log2_chroma_h= 0,
 840         .comp = {
 841             {0,1,1,0,15},        /* Y */
 842             {1,1,1,0,15},        /* U */
 843             {2,1,1,0,15},        /* V */
 844         },
 845     },
 846     [PIX_FMT_YUV422P16BE] = {
 847         .name = "yuv422p16be",
 848         .nb_components= 3,
 849         .log2_chroma_w= 1,
 850         .log2_chroma_h= 0,
 851         .comp = {
 852             {0,1,1,0,15},        /* Y */
 853             {1,1,1,0,15},        /* U */
 854             {2,1,1,0,15},        /* V */
 855         },
 856         .flags = PIX_FMT_BE,
 857     },
 858     [PIX_FMT_YUV444P16LE] = {
 859         .name = "yuv444p16le",
 860         .nb_components= 3,
 861         .log2_chroma_w= 0,
 862         .log2_chroma_h= 0,
 863         .comp = {
 864             {0,1,1,0,15},        /* Y */
 865             {1,1,1,0,15},        /* U */
 866             {2,1,1,0,15},        /* V */
 867         },
 868     },
 869     [PIX_FMT_YUV444P16BE] = {
 870         .name = "yuv444p16be",
 871         .nb_components= 3,
 872         .log2_chroma_w= 0,
 873         .log2_chroma_h= 0,
 874         .comp = {
 875             {0,1,1,0,15},        /* Y */
 876             {1,1,1,0,15},        /* U */
 877             {2,1,1,0,15},        /* V */
 878         },
 879         .flags = PIX_FMT_BE,
 880     },
 881     [PIX_FMT_YUV444P10LE] = {
 882         .name = "yuv444p10le",
 883         .nb_components= 3,
 884         .log2_chroma_w= 0,
 885         .log2_chroma_h= 0,
 886         .comp = {
 887             {0,1,1,0,9},        /* Y */
 888             {1,1,1,0,9},        /* U */
 889             {2,1,1,0,9},        /* V */
 890         },
 891     },
 892     [PIX_FMT_YUV444P10BE] = {
 893         .name = "yuv444p10be",
 894         .nb_components= 3,
 895         .log2_chroma_w= 0,
 896         .log2_chroma_h= 0,
 897         .comp = {
 898             {0,1,1,0,9},        /* Y */
 899             {1,1,1,0,9},        /* U */
 900             {2,1,1,0,9},        /* V */
 901         },
 902         .flags = PIX_FMT_BE,
 903     },
 904     [PIX_FMT_YUV444P9LE] = {
 905         .name = "yuv444p9le",
 906         .nb_components= 3,
 907         .log2_chroma_w= 0,
 908         .log2_chroma_h= 0,
 909         .comp = {
 910             {0,1,1,0,8},        /* Y */
 911             {1,1,1,0,8},        /* U */
 912             {2,1,1,0,8},        /* V */
 913         },
 914     },
 915     [PIX_FMT_YUV444P9BE] = {
 916         .name = "yuv444p9be",
 917         .nb_components= 3,
 918         .log2_chroma_w= 0,
 919         .log2_chroma_h= 0,
 920         .comp = {
 921             {0,1,1,0,9},        /* Y */
 922             {1,1,1,0,9},        /* U */
 923             {2,1,1,0,9},        /* V */
 924         },
 925         .flags = PIX_FMT_BE,
 926     },
 927     [PIX_FMT_DXVA2_VLD] = {
 928         .name = "dxva2_vld",
 929         .log2_chroma_w = 1,
 930         .log2_chroma_h = 1,
 931         .flags = PIX_FMT_HWACCEL,
 932     },
 933     [PIX_FMT_GRAY8A] = {
 934         .name = "gray8a",
 935         .nb_components= 2,
 936         .comp = {
 937             {0,1,1,0,7},        /* Y */
 938             {0,1,2,0,7},        /* A */
 939         },
 940     },
 941 };
 942
 943 static enum PixelFormat get_pix_fmt_internal(const char *name)
 944 {
 945     enum PixelFormat pix_fmt;
 946
 947     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
 948         if (av_pix_fmt_descriptors[pix_fmt].name &&
 949             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
 950             return pix_fmt;
 951
 952     return PIX_FMT_NONE;
 953 }
 954
 955 const char *av_get_pix_fmt_name(enum PixelFormat pix_fmt)
 956 {
 957     return (unsigned)pix_fmt < PIX_FMT_NB ?
 958         av_pix_fmt_descriptors[pix_fmt].name : NULL;
 959 }
 960
 961 #if HAVE_BIGENDIAN
 962 #   define X_NE(be, le) be
 963 #else
 964 #   define X_NE(be, le) le
 965 #endif
 966
 967 enum PixelFormat av_get_pix_fmt(const char *name)
 968 {
 969     enum PixelFormat pix_fmt;
 970
 971     if (!strcmp(name, "rgb32"))
 972         name = X_NE("argb", "bgra");
 973     else if (!strcmp(name, "bgr32"))
 974         name = X_NE("abgr", "rgba");
 975
 976     pix_fmt = get_pix_fmt_internal(name);
 977     if (pix_fmt == PIX_FMT_NONE) {
 978         char name2[32];
 979
 980         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
 981         pix_fmt = get_pix_fmt_internal(name2);
 982     }
 983     return pix_fmt;
 984 }
 985
 986 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
 987 {
 988     int c, bits = 0;
 989     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
 990
 991     for (c = 0; c < pixdesc->nb_components; c++) {
 992         int s = c==1 || c==2 ? 0 : log2_pixels;
 993         bits += (pixdesc->comp[c].depth_minus1+1) << s;
 994     }
 995
 996     return bits >> log2_pixels;
 997 }
 998
 999 char *av_get_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
1000 {
1001     /* print header */
1002     if (pix_fmt < 0) {
1003         snprintf (buf, buf_size, "name      " " nb_components" " nb_bits");
1004     } else {
1005         const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt];
1006         snprintf(buf, buf_size, "%-11s %7d %10d",
1007                  pixdesc->name, pixdesc->nb_components, av_get_bits_per_pixel(pixdesc));
1008     }
1009
1010     return buf;
1011 }