FFmpeg: libavutil/pixdesc.c Source File

00001 /*
00002  * pixel format descriptor
00003  * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #include <stdio.h>
00023 #include <string.h>
00024 #include "pixfmt.h"
00025 #include "pixdesc.h"
00026 
00027 #include "intreadwrite.h"
00028 
00029 void av_read_image_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
00030                         const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
00031 {
00032     AVComponentDescriptor comp= desc->comp[c];
00033     int plane= comp.plane;
00034     int depth= comp.depth_minus1+1;
00035     int mask = (1<<depth)-1;
00036     int shift= comp.shift;
00037     int step = comp.step_minus1+1;
00038     int flags= desc->flags;
00039 
00040     if (flags & PIX_FMT_BITSTREAM){
00041         int skip = x*step + comp.offset_plus1-1;
00042         const uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
00043         int shift = 8 - depth - (skip&7);
00044 
00045         while(w--){
00046             int val = (*p >> shift) & mask;
00047             if(read_pal_component)
00048                 val= data[1][4*val + c];
00049             shift -= step;
00050             p -= shift>>3;
00051             shift &= 7;
00052             *dst++= val;
00053         }
00054     } else {
00055         const uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
00056         int is_8bit = shift + depth <= 8;
00057 
00058         if (is_8bit)
00059             p += !!(flags & PIX_FMT_BE);
00060 
00061         while(w--){
00062             int val = is_8bit ? *p :
00063                 flags & PIX_FMT_BE ? AV_RB16(p) : AV_RL16(p);
00064             val = (val>>shift) & mask;
00065             if(read_pal_component)
00066                 val= data[1][4*val + c];
00067             p+= step;
00068             *dst++= val;
00069         }
00070     }
00071 }
00072 
00073 void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
00074                          const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
00075 {
00076     AVComponentDescriptor comp = desc->comp[c];
00077     int plane = comp.plane;
00078     int depth = comp.depth_minus1+1;
00079     int step  = comp.step_minus1+1;
00080     int flags = desc->flags;
00081 
00082     if (flags & PIX_FMT_BITSTREAM) {
00083         int skip = x*step + comp.offset_plus1-1;
00084         uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
00085         int shift = 8 - depth - (skip&7);
00086 
00087         while (w--) {
00088             *p |= *src++ << shift;
00089             shift -= step;
00090             p -= shift>>3;
00091             shift &= 7;
00092         }
00093     } else {
00094         int shift = comp.shift;
00095         uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
00096 
00097         if (shift + depth <= 8) {
00098             p += !!(flags & PIX_FMT_BE);
00099             while (w--) {
00100                 *p |= (*src++<<shift);
00101                 p += step;
00102             }
00103         } else {
00104             while (w--) {
00105                 if (flags & PIX_FMT_BE) {
00106                     uint16_t val = AV_RB16(p) | (*src++<<shift);
00107                     AV_WB16(p, val);
00108                 } else {
00109                     uint16_t val = AV_RL16(p) | (*src++<<shift);
00110                     AV_WL16(p, val);
00111                 }
00112                 p+= step;
00113             }
00114         }
00115     }
00116 }
00117 
00118 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
00119     [PIX_FMT_YUV420P] = {
00120         .name = "yuv420p",
00121         .nb_components= 3,
00122         .log2_chroma_w= 1,
00123         .log2_chroma_h= 1,
00124         .comp = {
00125             {0,0,1,0,7},        /* Y */
00126             {1,0,1,0,7},        /* U */
00127             {2,0,1,0,7},        /* V */
00128         },
00129     },
00130     [PIX_FMT_YUYV422] = {
00131         .name = "yuyv422",
00132         .nb_components= 3,
00133         .log2_chroma_w= 1,
00134         .log2_chroma_h= 0,
00135         .comp = {
00136             {0,1,1,0,7},        /* Y */
00137             {0,3,2,0,7},        /* U */
00138             {0,3,4,0,7},        /* V */
00139         },
00140     },
00141     [PIX_FMT_RGB24] = {
00142         .name = "rgb24",
00143         .nb_components= 3,
00144         .log2_chroma_w= 0,
00145         .log2_chroma_h= 0,
00146         .comp = {
00147             {0,2,1,0,7},        /* R */
00148             {0,2,2,0,7},        /* G */
00149             {0,2,3,0,7},        /* B */
00150         },
00151     },
00152     [PIX_FMT_BGR24] = {
00153         .name = "bgr24",
00154         .nb_components= 3,
00155         .log2_chroma_w= 0,
00156         .log2_chroma_h= 0,
00157         .comp = {
00158             {0,2,1,0,7},        /* B */
00159             {0,2,2,0,7},        /* G */
00160             {0,2,3,0,7},        /* R */
00161         },
00162     },
00163     [PIX_FMT_YUV422P] = {
00164         .name = "yuv422p",
00165         .nb_components= 3,
00166         .log2_chroma_w= 1,
00167         .log2_chroma_h= 0,
00168         .comp = {
00169             {0,0,1,0,7},        /* Y */
00170             {1,0,1,0,7},        /* U */
00171             {2,0,1,0,7},        /* V */
00172         },
00173     },
00174     [PIX_FMT_YUV444P] = {
00175         .name = "yuv444p",
00176         .nb_components= 3,
00177         .log2_chroma_w= 0,
00178         .log2_chroma_h= 0,
00179         .comp = {
00180             {0,0,1,0,7},        /* Y */
00181             {1,0,1,0,7},        /* U */
00182             {2,0,1,0,7},        /* V */
00183         },
00184     },
00185     [PIX_FMT_YUV410P] = {
00186         .name = "yuv410p",
00187         .nb_components= 3,
00188         .log2_chroma_w= 2,
00189         .log2_chroma_h= 2,
00190         .comp = {
00191             {0,0,1,0,7},        /* Y */
00192             {1,0,1,0,7},        /* U */
00193             {2,0,1,0,7},        /* V */
00194         },
00195     },
00196     [PIX_FMT_YUV411P] = {
00197         .name = "yuv411p",
00198         .nb_components= 3,
00199         .log2_chroma_w= 2,
00200         .log2_chroma_h= 0,
00201         .comp = {
00202             {0,0,1,0,7},        /* Y */
00203             {1,0,1,0,7},        /* U */
00204             {2,0,1,0,7},        /* V */
00205         },
00206     },
00207     [PIX_FMT_GRAY8] = {
00208         .name = "gray",
00209         .nb_components= 1,
00210         .log2_chroma_w= 0,
00211         .log2_chroma_h= 0,
00212         .comp = {
00213             {0,0,1,0,7},        /* Y */
00214         },
00215         .flags = PIX_FMT_PAL,
00216     },
00217     [PIX_FMT_MONOWHITE] = {
00218         .name = "monow",
00219         .nb_components= 1,
00220         .log2_chroma_w= 0,
00221         .log2_chroma_h= 0,
00222         .comp = {
00223             {0,0,1,0,0},        /* Y */
00224         },
00225         .flags = PIX_FMT_BITSTREAM,
00226     },
00227     [PIX_FMT_MONOBLACK] = {
00228         .name = "monob",
00229         .nb_components= 1,
00230         .log2_chroma_w= 0,
00231         .log2_chroma_h= 0,
00232         .comp = {
00233             {0,0,1,7,0},        /* Y */
00234         },
00235         .flags = PIX_FMT_BITSTREAM,
00236     },
00237     [PIX_FMT_PAL8] = {
00238         .name = "pal8",
00239         .nb_components= 1,
00240         .log2_chroma_w= 0,
00241         .log2_chroma_h= 0,
00242         .comp = {
00243             {0,0,1,0,7},
00244         },
00245         .flags = PIX_FMT_PAL,
00246     },
00247     [PIX_FMT_YUVJ420P] = {
00248         .name = "yuvj420p",
00249         .nb_components= 3,
00250         .log2_chroma_w= 1,
00251         .log2_chroma_h= 1,
00252         .comp = {
00253             {0,0,1,0,7},        /* Y */
00254             {1,0,1,0,7},        /* U */
00255             {2,0,1,0,7},        /* V */
00256         },
00257     },
00258     [PIX_FMT_YUVJ422P] = {
00259         .name = "yuvj422p",
00260         .nb_components= 3,
00261         .log2_chroma_w= 1,
00262         .log2_chroma_h= 0,
00263         .comp = {
00264             {0,0,1,0,7},        /* Y */
00265             {1,0,1,0,7},        /* U */
00266             {2,0,1,0,7},        /* V */
00267         },
00268     },
00269     [PIX_FMT_YUVJ444P] = {
00270         .name = "yuvj444p",
00271         .nb_components= 3,
00272         .log2_chroma_w= 0,
00273         .log2_chroma_h= 0,
00274         .comp = {
00275             {0,0,1,0,7},        /* Y */
00276             {1,0,1,0,7},        /* U */
00277             {2,0,1,0,7},        /* V */
00278         },
00279     },
00280     [PIX_FMT_XVMC_MPEG2_MC] = {
00281         .name = "xvmcmc",
00282         .flags = PIX_FMT_HWACCEL,
00283     },
00284     [PIX_FMT_XVMC_MPEG2_IDCT] = {
00285         .name = "xvmcidct",
00286         .flags = PIX_FMT_HWACCEL,
00287     },
00288     [PIX_FMT_UYVY422] = {
00289         .name = "uyvy422",
00290         .nb_components= 3,
00291         .log2_chroma_w= 1,
00292         .log2_chroma_h= 0,
00293         .comp = {
00294             {0,1,2,0,7},        /* Y */
00295             {0,3,1,0,7},        /* U */
00296             {0,3,3,0,7},        /* V */
00297         },
00298     },
00299     [PIX_FMT_UYYVYY411] = {
00300         .name = "uyyvyy411",
00301         .nb_components= 3,
00302         .log2_chroma_w= 2,
00303         .log2_chroma_h= 0,
00304         .comp = {
00305             {0,3,2,0,7},        /* Y */
00306             {0,5,1,0,7},        /* U */
00307             {0,5,4,0,7},        /* V */
00308         },
00309     },
00310     [PIX_FMT_BGR8] = {
00311         .name = "bgr8",
00312         .nb_components= 3,
00313         .log2_chroma_w= 0,
00314         .log2_chroma_h= 0,
00315         .comp = {
00316             {0,0,1,6,1},        /* B */
00317             {0,0,1,3,2},        /* G */
00318             {0,0,1,0,2},        /* R */
00319         },
00320         .flags = PIX_FMT_PAL,
00321     },
00322     [PIX_FMT_BGR4] = {
00323         .name = "bgr4",
00324         .nb_components= 3,
00325         .log2_chroma_w= 0,
00326         .log2_chroma_h= 0,
00327         .comp = {
00328             {0,3,1,0,0},        /* B */
00329             {0,3,2,0,1},        /* G */
00330             {0,3,4,0,0},        /* R */
00331         },
00332         .flags = PIX_FMT_BITSTREAM,
00333     },
00334     [PIX_FMT_BGR4_BYTE] = {
00335         .name = "bgr4_byte",
00336         .nb_components= 3,
00337         .log2_chroma_w= 0,
00338         .log2_chroma_h= 0,
00339         .comp = {
00340             {0,0,1,3,0},        /* B */
00341             {0,0,1,1,1},        /* G */
00342             {0,0,1,0,0},        /* R */
00343         },
00344         .flags = PIX_FMT_PAL,
00345     },
00346     [PIX_FMT_RGB8] = {
00347         .name = "rgb8",
00348         .nb_components= 3,
00349         .log2_chroma_w= 0,
00350         .log2_chroma_h= 0,
00351         .comp = {
00352             {0,0,1,6,1},        /* R */
00353             {0,0,1,3,2},        /* G */
00354             {0,0,1,0,2},        /* B */
00355         },
00356         .flags = PIX_FMT_PAL,
00357     },
00358     [PIX_FMT_RGB4] = {
00359         .name = "rgb4",
00360         .nb_components= 3,
00361         .log2_chroma_w= 0,
00362         .log2_chroma_h= 0,
00363         .comp = {
00364             {0,3,1,0,0},       /* R */
00365             {0,3,2,0,1},       /* G */
00366             {0,3,4,0,0},       /* B */
00367         },
00368         .flags = PIX_FMT_BITSTREAM,
00369     },
00370     [PIX_FMT_RGB4_BYTE] = {
00371         .name = "rgb4_byte",
00372         .nb_components= 3,
00373         .log2_chroma_w= 0,
00374         .log2_chroma_h= 0,
00375         .comp = {
00376             {0,0,1,3,0},        /* R */
00377             {0,0,1,1,1},        /* G */
00378             {0,0,1,0,0},        /* B */
00379         },
00380         .flags = PIX_FMT_PAL,
00381     },
00382     [PIX_FMT_NV12] = {
00383         .name = "nv12",
00384         .nb_components= 3,
00385         .log2_chroma_w= 1,
00386         .log2_chroma_h= 1,
00387         .comp = {
00388             {0,0,1,0,7},        /* Y */
00389             {1,1,1,0,7},        /* U */
00390             {1,1,2,0,7},        /* V */
00391         },
00392     },
00393     [PIX_FMT_NV21] = {
00394         .name = "nv21",
00395         .nb_components= 3,
00396         .log2_chroma_w= 1,
00397         .log2_chroma_h= 1,
00398         .comp = {
00399             {0,0,1,0,7},        /* Y */
00400             {1,1,1,0,7},        /* V */
00401             {1,1,2,0,7},        /* U */
00402         },
00403     },
00404     [PIX_FMT_ARGB] = {
00405         .name = "argb",
00406         .nb_components= 4,
00407         .log2_chroma_w= 0,
00408         .log2_chroma_h= 0,
00409         .comp = {
00410             {0,3,1,0,7},        /* A */
00411             {0,3,2,0,7},        /* R */
00412             {0,3,3,0,7},        /* G */
00413             {0,3,4,0,7},        /* B */
00414         },
00415     },
00416     [PIX_FMT_RGBA] = {
00417         .name = "rgba",
00418         .nb_components= 4,
00419         .log2_chroma_w= 0,
00420         .log2_chroma_h= 0,
00421         .comp = {
00422             {0,3,1,0,7},        /* R */
00423             {0,3,2,0,7},        /* G */
00424             {0,3,3,0,7},        /* B */
00425             {0,3,4,0,7},        /* A */
00426         },
00427     },
00428     [PIX_FMT_ABGR] = {
00429         .name = "abgr",
00430         .nb_components= 4,
00431         .log2_chroma_w= 0,
00432         .log2_chroma_h= 0,
00433         .comp = {
00434             {0,3,1,0,7},        /* A */
00435             {0,3,2,0,7},        /* B */
00436             {0,3,3,0,7},        /* G */
00437             {0,3,4,0,7},        /* R */
00438         },
00439     },
00440     [PIX_FMT_BGRA] = {
00441         .name = "bgra",
00442         .nb_components= 4,
00443         .log2_chroma_w= 0,
00444         .log2_chroma_h= 0,
00445         .comp = {
00446             {0,3,1,0,7},        /* B */
00447             {0,3,2,0,7},        /* G */
00448             {0,3,3,0,7},        /* R */
00449             {0,3,4,0,7},        /* A */
00450         },
00451     },
00452     [PIX_FMT_GRAY16BE] = {
00453         .name = "gray16be",
00454         .nb_components= 1,
00455         .log2_chroma_w= 0,
00456         .log2_chroma_h= 0,
00457         .comp = {
00458             {0,1,1,0,15},       /* Y */
00459         },
00460         .flags = PIX_FMT_BE,
00461     },
00462     [PIX_FMT_GRAY16LE] = {
00463         .name = "gray16le",
00464         .nb_components= 1,
00465         .log2_chroma_w= 0,
00466         .log2_chroma_h= 0,
00467         .comp = {
00468             {0,1,1,0,15},       /* Y */
00469         },
00470     },
00471     [PIX_FMT_YUV440P] = {
00472         .name = "yuv440p",
00473         .nb_components= 3,
00474         .log2_chroma_w= 0,
00475         .log2_chroma_h= 1,
00476         .comp = {
00477             {0,0,1,0,7},        /* Y */
00478             {1,0,1,0,7},        /* U */
00479             {2,0,1,0,7},        /* V */
00480         },
00481     },
00482     [PIX_FMT_YUVJ440P] = {
00483         .name = "yuvj440p",
00484         .nb_components= 3,
00485         .log2_chroma_w= 0,
00486         .log2_chroma_h= 1,
00487         .comp = {
00488             {0,0,1,0,7},        /* Y */
00489             {1,0,1,0,7},        /* U */
00490             {2,0,1,0,7},        /* V */
00491         },
00492     },
00493     [PIX_FMT_YUVA420P] = {
00494         .name = "yuva420p",
00495         .nb_components= 4,
00496         .log2_chroma_w= 1,
00497         .log2_chroma_h= 1,
00498         .comp = {
00499             {0,0,1,0,7},        /* Y */
00500             {1,0,1,0,7},        /* U */
00501             {2,0,1,0,7},        /* V */
00502             {3,0,1,0,7},        /* A */
00503         },
00504     },
00505     [PIX_FMT_VDPAU_H264] = {
00506         .name = "vdpau_h264",
00507         .log2_chroma_w = 1,
00508         .log2_chroma_h = 1,
00509         .flags = PIX_FMT_HWACCEL,
00510     },
00511     [PIX_FMT_VDPAU_MPEG1] = {
00512         .name = "vdpau_mpeg1",
00513         .log2_chroma_w = 1,
00514         .log2_chroma_h = 1,
00515         .flags = PIX_FMT_HWACCEL,
00516     },
00517     [PIX_FMT_VDPAU_MPEG2] = {
00518         .name = "vdpau_mpeg2",
00519         .log2_chroma_w = 1,
00520         .log2_chroma_h = 1,
00521         .flags = PIX_FMT_HWACCEL,
00522     },
00523     [PIX_FMT_VDPAU_WMV3] = {
00524         .name = "vdpau_wmv3",
00525         .log2_chroma_w = 1,
00526         .log2_chroma_h = 1,
00527         .flags = PIX_FMT_HWACCEL,
00528     },
00529     [PIX_FMT_VDPAU_VC1] = {
00530         .name = "vdpau_vc1",
00531         .log2_chroma_w = 1,
00532         .log2_chroma_h = 1,
00533         .flags = PIX_FMT_HWACCEL,
00534     },
00535     [PIX_FMT_VDPAU_MPEG4] = {
00536         .name = "vdpau_mpeg4",
00537         .log2_chroma_w = 1,
00538         .log2_chroma_h = 1,
00539         .flags = PIX_FMT_HWACCEL,
00540     },
00541     [PIX_FMT_RGB48BE] = {
00542         .name = "rgb48be",
00543         .nb_components= 3,
00544         .log2_chroma_w= 0,
00545         .log2_chroma_h= 0,
00546         .comp = {
00547             {0,5,1,0,15},       /* R */
00548             {0,5,3,0,15},       /* G */
00549             {0,5,5,0,15},       /* B */
00550         },
00551         .flags = PIX_FMT_BE,
00552     },
00553     [PIX_FMT_RGB48LE] = {
00554         .name = "rgb48le",
00555         .nb_components= 3,
00556         .log2_chroma_w= 0,
00557         .log2_chroma_h= 0,
00558         .comp = {
00559             {0,5,1,0,15},       /* R */
00560             {0,5,3,0,15},       /* G */
00561             {0,5,5,0,15},       /* B */
00562         },
00563     },
00564     [PIX_FMT_RGB565BE] = {
00565         .name = "rgb565be",
00566         .nb_components= 3,
00567         .log2_chroma_w= 0,
00568         .log2_chroma_h= 0,
00569         .comp = {
00570             {0,1,0,3,4},        /* R */
00571             {0,1,1,5,5},        /* G */
00572             {0,1,1,0,4},        /* B */
00573         },
00574         .flags = PIX_FMT_BE,
00575     },
00576     [PIX_FMT_RGB565LE] = {
00577         .name = "rgb565le",
00578         .nb_components= 3,
00579         .log2_chroma_w= 0,
00580         .log2_chroma_h= 0,
00581         .comp = {
00582             {0,1,2,3,4},        /* R */
00583             {0,1,1,5,5},        /* G */
00584             {0,1,1,0,4},        /* B */
00585         },
00586     },
00587     [PIX_FMT_RGB555BE] = {
00588         .name = "rgb555be",
00589         .nb_components= 3,
00590         .log2_chroma_w= 0,
00591         .log2_chroma_h= 0,
00592         .comp = {
00593             {0,1,0,2,4},        /* R */
00594             {0,1,1,5,4},        /* G */
00595             {0,1,1,0,4},        /* B */
00596         },
00597         .flags = PIX_FMT_BE,
00598     },
00599     [PIX_FMT_RGB555LE] = {
00600         .name = "rgb555le",
00601         .nb_components= 3,
00602         .log2_chroma_w= 0,
00603         .log2_chroma_h= 0,
00604         .comp = {
00605             {0,1,2,2,4},        /* R */
00606             {0,1,1,5,4},        /* G */
00607             {0,1,1,0,4},        /* B */
00608         },
00609     },
00610     [PIX_FMT_RGB444BE] = {
00611         .name = "rgb444be",
00612         .nb_components= 3,
00613         .log2_chroma_w= 0,
00614         .log2_chroma_h= 0,
00615         .comp = {
00616             {0,1,0,0,3},        /* R */
00617             {0,1,1,4,3},        /* G */
00618             {0,1,1,0,3},        /* B */
00619         },
00620         .flags = PIX_FMT_BE,
00621     },
00622     [PIX_FMT_RGB444LE] = {
00623         .name = "rgb444le",
00624         .nb_components= 3,
00625         .log2_chroma_w= 0,
00626         .log2_chroma_h= 0,
00627         .comp = {
00628             {0,1,2,0,3},        /* R */
00629             {0,1,1,4,3},        /* G */
00630             {0,1,1,0,3},        /* B */
00631         },
00632     },
00633     [PIX_FMT_BGR48BE] = {
00634         .name = "bgr48be",
00635         .nb_components= 3,
00636         .log2_chroma_w= 0,
00637         .log2_chroma_h= 0,
00638         .comp = {
00639             {0,5,1,0,15},       /* B */
00640             {0,5,3,0,15},       /* G */
00641             {0,5,5,0,15},       /* R */
00642         },
00643         .flags = PIX_FMT_BE,
00644     },
00645     [PIX_FMT_BGR48LE] = {
00646         .name = "bgr48le",
00647         .nb_components= 3,
00648         .log2_chroma_w= 0,
00649         .log2_chroma_h= 0,
00650         .comp = {
00651             {0,5,1,0,15},       /* B */
00652             {0,5,3,0,15},       /* G */
00653             {0,5,5,0,15},       /* R */
00654         },
00655     },
00656     [PIX_FMT_BGR565BE] = {
00657         .name = "bgr565be",
00658         .nb_components= 3,
00659         .log2_chroma_w= 0,
00660         .log2_chroma_h= 0,
00661         .comp = {
00662             {0,1,0,3,4},        /* B */
00663             {0,1,1,5,5},        /* G */
00664             {0,1,1,0,4},        /* R */
00665         },
00666         .flags = PIX_FMT_BE,
00667     },
00668     [PIX_FMT_BGR565LE] = {
00669         .name = "bgr565le",
00670         .nb_components= 3,
00671         .log2_chroma_w= 0,
00672         .log2_chroma_h= 0,
00673         .comp = {
00674             {0,1,2,3,4},        /* B */
00675             {0,1,1,5,5},        /* G */
00676             {0,1,1,0,4},        /* R */
00677         },
00678     },
00679     [PIX_FMT_BGR555BE] = {
00680         .name = "bgr555be",
00681         .nb_components= 3,
00682         .log2_chroma_w= 0,
00683         .log2_chroma_h= 0,
00684         .comp = {
00685             {0,1,0,2,4},       /* B */
00686             {0,1,1,5,4},       /* G */
00687             {0,1,1,0,4},       /* R */
00688         },
00689         .flags = PIX_FMT_BE,
00690      },
00691     [PIX_FMT_BGR555LE] = {
00692         .name = "bgr555le",
00693         .nb_components= 3,
00694         .log2_chroma_w= 0,
00695         .log2_chroma_h= 0,
00696         .comp = {
00697             {0,1,2,2,4},        /* B */
00698             {0,1,1,5,4},        /* G */
00699             {0,1,1,0,4},        /* R */
00700         },
00701     },
00702     [PIX_FMT_BGR444BE] = {
00703         .name = "bgr444be",
00704         .nb_components= 3,
00705         .log2_chroma_w= 0,
00706         .log2_chroma_h= 0,
00707         .comp = {
00708             {0,1,0,0,3},       /* B */
00709             {0,1,1,4,3},       /* G */
00710             {0,1,1,0,3},       /* R */
00711         },
00712         .flags = PIX_FMT_BE,
00713      },
00714     [PIX_FMT_BGR444LE] = {
00715         .name = "bgr444le",
00716         .nb_components= 3,
00717         .log2_chroma_w= 0,
00718         .log2_chroma_h= 0,
00719         .comp = {
00720             {0,1,2,0,3},        /* B */
00721             {0,1,1,4,3},        /* G */
00722             {0,1,1,0,3},        /* R */
00723         },
00724     },
00725     [PIX_FMT_VAAPI_MOCO] = {
00726         .name = "vaapi_moco",
00727         .log2_chroma_w = 1,
00728         .log2_chroma_h = 1,
00729         .flags = PIX_FMT_HWACCEL,
00730     },
00731     [PIX_FMT_VAAPI_IDCT] = {
00732         .name = "vaapi_idct",
00733         .log2_chroma_w = 1,
00734         .log2_chroma_h = 1,
00735         .flags = PIX_FMT_HWACCEL,
00736     },
00737     [PIX_FMT_VAAPI_VLD] = {
00738         .name = "vaapi_vld",
00739         .log2_chroma_w = 1,
00740         .log2_chroma_h = 1,
00741         .flags = PIX_FMT_HWACCEL,
00742     },
00743     [PIX_FMT_YUV420P9LE] = {
00744         .name = "yuv420p9le",
00745         .nb_components= 3,
00746         .log2_chroma_w= 1,
00747         .log2_chroma_h= 1,
00748         .comp = {
00749             {0,1,1,0,8},        /* Y */
00750             {1,1,1,0,8},        /* U */
00751             {2,1,1,0,8},        /* V */
00752         },
00753     },
00754     [PIX_FMT_YUV420P9BE] = {
00755         .name = "yuv420p9be",
00756         .nb_components= 3,
00757         .log2_chroma_w= 1,
00758         .log2_chroma_h= 1,
00759         .comp = {
00760             {0,1,1,0,8},        /* Y */
00761             {1,1,1,0,8},        /* U */
00762             {2,1,1,0,8},        /* V */
00763         },
00764         .flags = PIX_FMT_BE,
00765     },
00766     [PIX_FMT_YUV420P10LE] = {
00767         .name = "yuv420p10le",
00768         .nb_components= 3,
00769         .log2_chroma_w= 1,
00770         .log2_chroma_h= 1,
00771         .comp = {
00772             {0,1,1,0,9},        /* Y */
00773             {1,1,1,0,9},        /* U */
00774             {2,1,1,0,9},        /* V */
00775         },
00776     },
00777     [PIX_FMT_YUV420P10BE] = {
00778         .name = "yuv420p10be",
00779         .nb_components= 3,
00780         .log2_chroma_w= 1,
00781         .log2_chroma_h= 1,
00782         .comp = {
00783             {0,1,1,0,9},        /* Y */
00784             {1,1,1,0,9},        /* U */
00785             {2,1,1,0,9},        /* V */
00786         },
00787         .flags = PIX_FMT_BE,
00788     },
00789     [PIX_FMT_YUV420P16LE] = {
00790         .name = "yuv420p16le",
00791         .nb_components= 3,
00792         .log2_chroma_w= 1,
00793         .log2_chroma_h= 1,
00794         .comp = {
00795             {0,1,1,0,15},        /* Y */
00796             {1,1,1,0,15},        /* U */
00797             {2,1,1,0,15},        /* V */
00798         },
00799     },
00800     [PIX_FMT_YUV420P16BE] = {
00801         .name = "yuv420p16be",
00802         .nb_components= 3,
00803         .log2_chroma_w= 1,
00804         .log2_chroma_h= 1,
00805         .comp = {
00806             {0,1,1,0,15},        /* Y */
00807             {1,1,1,0,15},        /* U */
00808             {2,1,1,0,15},        /* V */
00809         },
00810         .flags = PIX_FMT_BE,
00811     },
00812     [PIX_FMT_YUV422P10LE] = {
00813         .name = "yuv422p10le",
00814         .nb_components= 3,
00815         .log2_chroma_w= 1,
00816         .log2_chroma_h= 0,
00817         .comp = {
00818             {0,1,1,0,9},        /* Y */
00819             {1,1,1,0,9},        /* U */
00820             {2,1,1,0,9},        /* V */
00821         },
00822     },
00823     [PIX_FMT_YUV422P10BE] = {
00824         .name = "yuv422p10be",
00825         .nb_components= 3,
00826         .log2_chroma_w= 1,
00827         .log2_chroma_h= 0,
00828         .comp = {
00829             {0,1,1,0,9},        /* Y */
00830             {1,1,1,0,9},        /* U */
00831             {2,1,1,0,9},        /* V */
00832         },
00833         .flags = PIX_FMT_BE,
00834     },
00835     [PIX_FMT_YUV422P16LE] = {
00836         .name = "yuv422p16le",
00837         .nb_components= 3,
00838         .log2_chroma_w= 1,
00839         .log2_chroma_h= 0,
00840         .comp = {
00841             {0,1,1,0,15},        /* Y */
00842             {1,1,1,0,15},        /* U */
00843             {2,1,1,0,15},        /* V */
00844         },
00845     },
00846     [PIX_FMT_YUV422P16BE] = {
00847         .name = "yuv422p16be",
00848         .nb_components= 3,
00849         .log2_chroma_w= 1,
00850         .log2_chroma_h= 0,
00851         .comp = {
00852             {0,1,1,0,15},        /* Y */
00853             {1,1,1,0,15},        /* U */
00854             {2,1,1,0,15},        /* V */
00855         },
00856         .flags = PIX_FMT_BE,
00857     },
00858     [PIX_FMT_YUV444P16LE] = {
00859         .name = "yuv444p16le",
00860         .nb_components= 3,
00861         .log2_chroma_w= 0,
00862         .log2_chroma_h= 0,
00863         .comp = {
00864             {0,1,1,0,15},        /* Y */
00865             {1,1,1,0,15},        /* U */
00866             {2,1,1,0,15},        /* V */
00867         },
00868     },
00869     [PIX_FMT_YUV444P16BE] = {
00870         .name = "yuv444p16be",
00871         .nb_components= 3,
00872         .log2_chroma_w= 0,
00873         .log2_chroma_h= 0,
00874         .comp = {
00875             {0,1,1,0,15},        /* Y */
00876             {1,1,1,0,15},        /* U */
00877             {2,1,1,0,15},        /* V */
00878         },
00879         .flags = PIX_FMT_BE,
00880     },
00881     [PIX_FMT_YUV444P10LE] = {
00882         .name = "yuv444p10le",
00883         .nb_components= 3,
00884         .log2_chroma_w= 0,
00885         .log2_chroma_h= 0,
00886         .comp = {
00887             {0,1,1,0,9},        /* Y */
00888             {1,1,1,0,9},        /* U */
00889             {2,1,1,0,9},        /* V */
00890         },
00891     },
00892     [PIX_FMT_YUV444P10BE] = {
00893         .name = "yuv444p10be",
00894         .nb_components= 3,
00895         .log2_chroma_w= 0,
00896         .log2_chroma_h= 0,
00897         .comp = {
00898             {0,1,1,0,9},        /* Y */
00899             {1,1,1,0,9},        /* U */
00900             {2,1,1,0,9},        /* V */
00901         },
00902         .flags = PIX_FMT_BE,
00903     },
00904     [PIX_FMT_YUV444P9LE] = {
00905         .name = "yuv444p9le",
00906         .nb_components= 3,
00907         .log2_chroma_w= 0,
00908         .log2_chroma_h= 0,
00909         .comp = {
00910             {0,1,1,0,8},        /* Y */
00911             {1,1,1,0,8},        /* U */
00912             {2,1,1,0,8},        /* V */
00913         },
00914     },
00915     [PIX_FMT_YUV444P9BE] = {
00916         .name = "yuv444p9be",
00917         .nb_components= 3,
00918         .log2_chroma_w= 0,
00919         .log2_chroma_h= 0,
00920         .comp = {
00921             {0,1,1,0,8},        /* Y */
00922             {1,1,1,0,8},        /* U */
00923             {2,1,1,0,8},        /* V */
00924         },
00925         .flags = PIX_FMT_BE,
00926     },
00927     [PIX_FMT_DXVA2_VLD] = {
00928         .name = "dxva2_vld",
00929         .log2_chroma_w = 1,
00930         .log2_chroma_h = 1,
00931         .flags = PIX_FMT_HWACCEL,
00932     },
00933     [PIX_FMT_GRAY8A] = {
00934         .name = "gray8a",
00935         .nb_components= 2,
00936         .comp = {
00937             {0,1,1,0,7},        /* Y */
00938             {0,1,2,0,7},        /* A */
00939         },
00940     },
00941 };
00942 
00943 static enum PixelFormat get_pix_fmt_internal(const char *name)
00944 {
00945     enum PixelFormat pix_fmt;
00946 
00947     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
00948         if (av_pix_fmt_descriptors[pix_fmt].name &&
00949             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
00950             return pix_fmt;
00951 
00952     return PIX_FMT_NONE;
00953 }
00954 
00955 const char *av_get_pix_fmt_name(enum PixelFormat pix_fmt)
00956 {
00957     return (unsigned)pix_fmt < PIX_FMT_NB ?
00958         av_pix_fmt_descriptors[pix_fmt].name : NULL;
00959 }
00960 
00961 #if HAVE_BIGENDIAN
00962 #   define X_NE(be, le) be
00963 #else
00964 #   define X_NE(be, le) le
00965 #endif
00966 
00967 enum PixelFormat av_get_pix_fmt(const char *name)
00968 {
00969     enum PixelFormat pix_fmt;
00970 
00971     if (!strcmp(name, "rgb32"))
00972         name = X_NE("argb", "bgra");
00973     else if (!strcmp(name, "bgr32"))
00974         name = X_NE("abgr", "rgba");
00975 
00976     pix_fmt = get_pix_fmt_internal(name);
00977     if (pix_fmt == PIX_FMT_NONE) {
00978         char name2[32];
00979 
00980         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
00981         pix_fmt = get_pix_fmt_internal(name2);
00982     }
00983     return pix_fmt;
00984 }
00985 
00986 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
00987 {
00988     int c, bits = 0;
00989     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
00990 
00991     for (c = 0; c < pixdesc->nb_components; c++) {
00992         int s = c==1 || c==2 ? 0 : log2_pixels;
00993         bits += (pixdesc->comp[c].depth_minus1+1) << s;
00994     }
00995 
00996     return bits >> log2_pixels;
00997 }
00998 
00999 char *av_get_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
01000 {
01001     /* print header */
01002     if (pix_fmt < 0) {
01003         snprintf (buf, buf_size, "name      " " nb_components" " nb_bits");
01004     } else {
01005         const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt];
01006         snprintf(buf, buf_size, "%-11s %7d %10d",
01007                  pixdesc->name, pixdesc->nb_components, av_get_bits_per_pixel(pixdesc));
01008     }
01009 
01010     return buf;
01011 }