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  1. /*
  2.  * Image format
  3.  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
  4.  * Copyright (c) 2004 Michael Niedermayer
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #include "libavutil/avstring.h"
  24. #include "internal.h"
  25.  
  26. typedef struct IdStrMap {
  27.     enum AVCodecID id;
  28.     const char *str;
  29. } IdStrMap;
  30.  
  31. static const IdStrMap img_tags[] = {
  32.     { AV_CODEC_ID_MJPEG,      "jpeg"     },
  33.     { AV_CODEC_ID_MJPEG,      "jpg"      },
  34.     { AV_CODEC_ID_MJPEG,      "jps"      },
  35.     { AV_CODEC_ID_MJPEG,      "mpo"      },
  36.     { AV_CODEC_ID_LJPEG,      "ljpg"     },
  37.     { AV_CODEC_ID_JPEGLS,     "jls"      },
  38.     { AV_CODEC_ID_PNG,        "png"      },
  39.     { AV_CODEC_ID_PNG,        "pns"      },
  40.     { AV_CODEC_ID_PNG,        "mng"      },
  41.     { AV_CODEC_ID_PPM,        "ppm"      },
  42.     { AV_CODEC_ID_PPM,        "pnm"      },
  43.     { AV_CODEC_ID_PGM,        "pgm"      },
  44.     { AV_CODEC_ID_PGMYUV,     "pgmyuv"   },
  45.     { AV_CODEC_ID_PBM,        "pbm"      },
  46.     { AV_CODEC_ID_PAM,        "pam"      },
  47.     { AV_CODEC_ID_ALIAS_PIX,  "pix"      },
  48.     { AV_CODEC_ID_DDS,        "dds"      },
  49.     { AV_CODEC_ID_MPEG1VIDEO, "mpg1-img" },
  50.     { AV_CODEC_ID_MPEG2VIDEO, "mpg2-img" },
  51.     { AV_CODEC_ID_MPEG4,      "mpg4-img" },
  52.     { AV_CODEC_ID_FFV1,       "ffv1-img" },
  53.     { AV_CODEC_ID_RAWVIDEO,   "y"        },
  54.     { AV_CODEC_ID_RAWVIDEO,   "raw"      },
  55.     { AV_CODEC_ID_BMP,        "bmp"      },
  56.     { AV_CODEC_ID_TARGA,      "tga"      },
  57.     { AV_CODEC_ID_TIFF,       "tiff"     },
  58.     { AV_CODEC_ID_TIFF,       "tif"      },
  59.     { AV_CODEC_ID_SGI,        "sgi"      },
  60.     { AV_CODEC_ID_PTX,        "ptx"      },
  61.     { AV_CODEC_ID_PCX,        "pcx"      },
  62.     { AV_CODEC_ID_QDRAW,      "pic"      },
  63.     { AV_CODEC_ID_QDRAW,      "pct"      },
  64.     { AV_CODEC_ID_QDRAW,      "pict"     },
  65.     { AV_CODEC_ID_SUNRAST,    "sun"      },
  66.     { AV_CODEC_ID_SUNRAST,    "ras"      },
  67.     { AV_CODEC_ID_SUNRAST,    "rs"       },
  68.     { AV_CODEC_ID_SUNRAST,    "im1"      },
  69.     { AV_CODEC_ID_SUNRAST,    "im8"      },
  70.     { AV_CODEC_ID_SUNRAST,    "im24"     },
  71.     { AV_CODEC_ID_SUNRAST,    "im32"     },
  72.     { AV_CODEC_ID_SUNRAST,    "sunras"   },
  73.     { AV_CODEC_ID_JPEG2000,   "j2c"      },
  74.     { AV_CODEC_ID_JPEG2000,   "jp2"      },
  75.     { AV_CODEC_ID_JPEG2000,   "jpc"      },
  76.     { AV_CODEC_ID_JPEG2000,   "j2k"      },
  77.     { AV_CODEC_ID_DPX,        "dpx"      },
  78.     { AV_CODEC_ID_EXR,        "exr"      },
  79.     { AV_CODEC_ID_PICTOR,     "pic"      },
  80.     { AV_CODEC_ID_V210X,      "yuv10"    },
  81.     { AV_CODEC_ID_WEBP,       "webp"     },
  82.     { AV_CODEC_ID_XBM,        "xbm"      },
  83.     { AV_CODEC_ID_XFACE,      "xface"    },
  84.     { AV_CODEC_ID_XWD,        "xwd"      },
  85.     { AV_CODEC_ID_NONE,       NULL       }
  86. };
  87.  
  88. static enum AVCodecID av_str2id(const IdStrMap *tags, const char *str)
  89. {
  90.     str = strrchr(str, '.');
  91.     if (!str)
  92.         return AV_CODEC_ID_NONE;
  93.     str++;
  94.  
  95.     while (tags->id) {
  96.         if (!av_strcasecmp(str, tags->str))
  97.             return tags->id;
  98.  
  99.         tags++;
  100.     }
  101.     return AV_CODEC_ID_NONE;
  102. }
  103.  
  104. enum AVCodecID ff_guess_image2_codec(const char *filename)
  105. {
  106.     return av_str2id(img_tags, filename);
  107. }
  108.