libavformat/metadata_compat.c

   1 /*
   2  * Copyright (c) 2009  Aurelien Jacobs <aurel@gnuage.org>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <strings.h>
  22 #include "avformat.h"
  23 #include "metadata.h"
  24 #include "libavutil/avstring.h"
  25
  26 #if LIBAVFORMAT_VERSION_MAJOR < 53
  27
  28 #define SIZE_OFFSET(x) sizeof(((AVFormatContext*)0)->x),offsetof(AVFormatContext,x)
  29
  30 static const struct {
  31     const char name[16];
  32     int   size;
  33     int   offset;
  34 } compat_tab[] = {
  35     { "title",           SIZE_OFFSET(title)     },
  36     { "author",          SIZE_OFFSET(author)    },
  37     { "copyright",       SIZE_OFFSET(copyright) },
  38     { "comment",         SIZE_OFFSET(comment)   },
  39     { "album",           SIZE_OFFSET(album)     },
  40     { "year",            SIZE_OFFSET(year)      },
  41     { "track",           SIZE_OFFSET(track)     },
  42     { "genre",           SIZE_OFFSET(genre)     },
  43
  44     { "artist",          SIZE_OFFSET(author)    },
  45     { "creator",         SIZE_OFFSET(author)    },
  46     { "written_by",      SIZE_OFFSET(author)    },
  47     { "lead_performer",  SIZE_OFFSET(author)    },
  48     { "description",     SIZE_OFFSET(comment)   },
  49     { "albumtitle",      SIZE_OFFSET(album)     },
  50     { "date_written",    SIZE_OFFSET(year)      },
  51     { "date_released",   SIZE_OFFSET(year)      },
  52     { "tracknumber",     SIZE_OFFSET(track)     },
  53     { "part_number",     SIZE_OFFSET(track)     },
  54 };
  55
  56 void ff_metadata_demux_compat(AVFormatContext *ctx)
  57 {
  58     AVMetadata *m;
  59     int i, j;
  60
  61     if ((m = ctx->metadata))
  62         for (j=0; j<m->count; j++)
  63             for (i=0; i<FF_ARRAY_ELEMS(compat_tab); i++)
  64                 if (!strcasecmp(m->elems[j].key, compat_tab[i].name)) {
  65                     int *ptr = (int *)((char *)ctx+compat_tab[i].offset);
  66                     if (*ptr)  continue;
  67                     if (compat_tab[i].size > sizeof(int))
  68                         av_strlcpy((char *)ptr, m->elems[j].value, compat_tab[i].size);
  69                     else
  70                         *ptr = atoi(m->elems[j].value);
  71                 }
  72
  73     for (i=0; i<ctx->nb_chapters; i++)
  74         if ((m = ctx->chapters[i]->metadata))
  75             for (j=0; j<m->count; j++)
  76                 if (!strcasecmp(m->elems[j].key, "title")) {
  77                     av_free(ctx->chapters[i]->title);
  78                     ctx->chapters[i]->title = av_strdup(m->elems[j].value);
  79                 }
  80
  81     for (i=0; i<ctx->nb_programs; i++)
  82         if ((m = ctx->programs[i]->metadata))
  83             for (j=0; j<m->count; j++) {
  84                 if (!strcasecmp(m->elems[j].key, "name")) {
  85                     av_free(ctx->programs[i]->name);
  86                     ctx->programs[i]->name = av_strdup(m->elems[j].value);
  87                 }
  88                 if (!strcasecmp(m->elems[j].key, "provider_name")) {
  89                     av_free(ctx->programs[i]->provider_name);
  90                     ctx->programs[i]->provider_name = av_strdup(m->elems[j].value);
  91                 }
  92             }
  93
  94     for (i=0; i<ctx->nb_streams; i++)
  95         if ((m = ctx->streams[i]->metadata))
  96             for (j=0; j<m->count; j++) {
  97                 if (!strcasecmp(m->elems[j].key, "language"))
  98                     av_strlcpy(ctx->streams[i]->language, m->elems[j].value, 4);
  99                 if (!strcasecmp(m->elems[j].key, "filename")) {
 100                     av_free(ctx->streams[i]->filename);
 101                     ctx->streams[i]->filename= av_strdup(m->elems[j].value);
 102                 }
 103             }
 104 }
 105
 106
 107 #define FILL_METADATA(s, key, value) {                                        \
 108     if (value && *value && !av_metadata_get(s->metadata, #key, NULL, 0))      \
 109         av_metadata_set(&s->metadata, #key, value);                           \
 110     }
 111 #define FILL_METADATA_STR(s, key)  FILL_METADATA(s, key, s->key)
 112 #define FILL_METADATA_INT(s, key) {                                           \
 113     char number[10];                                                          \
 114     snprintf(number, sizeof(number), "%d", s->key);                           \
 115     if(s->key)  FILL_METADATA(s, key, number) }
 116
 117 void ff_metadata_mux_compat(AVFormatContext *ctx)
 118 {
 119     int i;
 120
 121     if (ctx->metadata && ctx->metadata->count > 0)
 122         return;
 123
 124     FILL_METADATA_STR(ctx, title);
 125     FILL_METADATA_STR(ctx, author);
 126     FILL_METADATA_STR(ctx, copyright);
 127     FILL_METADATA_STR(ctx, comment);
 128     FILL_METADATA_STR(ctx, album);
 129     FILL_METADATA_INT(ctx, year);
 130     FILL_METADATA_INT(ctx, track);
 131     FILL_METADATA_STR(ctx, genre);
 132     for (i=0; i<ctx->nb_chapters; i++)
 133         FILL_METADATA_STR(ctx->chapters[i], title);
 134     for (i=0; i<ctx->nb_programs; i++) {
 135         FILL_METADATA_STR(ctx->programs[i], name);
 136         FILL_METADATA_STR(ctx->programs[i], provider_name);
 137     }
 138     for (i=0; i<ctx->nb_streams; i++) {
 139         FILL_METADATA_STR(ctx->streams[i], language);
 140         FILL_METADATA_STR(ctx->streams[i], filename);
 141     }
 142 }
 143
 144 #endif /* LIBAVFORMAT_VERSION_MAJOR < 53 */