Add some basic metadata conversion tables for matroska and asf.

Add missing const qualifiers for metadata_conv in AV{In|Out}putFormat.

Originally committed as revision 17671 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/asf.c

@@ -111,3 +111,15 @@ const GUID ff_asf_metadata_header = {
 const GUID ff_asf_my_guid = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 };
+
+
+const AVMetadataConv ff_asf_metadata_conv[] = {
+    { "AlbumArtist", "artist"    },
+    { "AlbumTitle" , "album"     },
+    { "Author"     , "author"    },
+    { "Genre"      , "genre"     },
+    { "Copyright"  , "copyright" },
+    { "TrackNumber", "track"     },
+    { "Year"       , "year"      },
+    { 0 }
+};

libavformat/asf.h

@@ -23,6 +23,7 @@
 
 #include <stdint.h>
 #include "avformat.h"
+#include "metadata.h"
 
 #define PACKET_SIZE 3200
 
@@ -157,6 +158,8 @@ extern const GUID ff_asf_ext_stream_audio_stream;
 extern const GUID ff_asf_metadata_header;
 extern const GUID ff_asf_my_guid;
 
+extern const AVMetadataConv ff_asf_metadata_conv[];
+
 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
 
 

libavformat/asfdec.c

@@ -1087,4 +1087,5 @@ AVInputFormat asf_demuxer = {
     asf_read_close,
     asf_read_seek,
     asf_read_pts,
+    .metadata_conv = ff_asf_metadata_conv,
 };

libavformat/asfenc.c

@@ -855,6 +855,7 @@ AVOutputFormat asf_muxer = {
     asf_write_trailer,
     .flags = AVFMT_GLOBALHEADER,
     .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
+    .metadata_conv = ff_asf_metadata_conv,
 };
 #endif
 
@@ -876,5 +877,6 @@ AVOutputFormat asf_stream_muxer = {
     asf_write_trailer,
     .flags = AVFMT_GLOBALHEADER,
     .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
+    .metadata_conv = ff_asf_metadata_conv,
 };
 #endif //CONFIG_ASF_STREAM_MUXER

libavformat/avformat.h

@@ -309,7 +309,7 @@ typedef struct AVOutputFormat {
 
     enum CodecID subtitle_codec; /**< default subtitle codec */
 
-    AVMetadataConv *metadata_conv;
+    const AVMetadataConv *metadata_conv;
 
     /* private fields */
     struct AVOutputFormat *next;
@@ -390,7 +390,7 @@ typedef struct AVInputFormat {
      */
     int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
 
-    AVMetadataConv *metadata_conv;
+    const AVMetadataConv *metadata_conv;
 
     /* private fields */
     struct AVInputFormat *next;

libavformat/matroska.c

@@ -88,3 +88,10 @@ const CodecMime ff_mkv_mime_tags[] = {
 
     {""                           , CODEC_ID_NONE}
 };
+
+const AVMetadataConv ff_mkv_metadata_conv[] = {
+    { "ARTIST"        , "artist" },
+    { "LEAD_PERFORMER", "artist" },
+    { "PART_NUMBER"   , "track"  },
+    { 0 }
+};

libavformat/matroska.h

@@ -23,6 +23,7 @@
 #define AVFORMAT_MATROSKA_H
 
 #include "libavcodec/avcodec.h"
+#include "metadata.h"
 
 /* EBML version supported */
 #define EBML_VERSION 1
@@ -235,5 +236,6 @@ typedef struct CodecMime{
 
 extern const CodecTags ff_mkv_codec_tags[];
 extern const CodecMime ff_mkv_mime_tags[];
+extern const AVMetadataConv ff_mkv_metadata_conv[];
 
 #endif /* AVFORMAT_MATROSKA_H */

libavformat/matroskadec.c

@@ -1839,4 +1839,5 @@ AVInputFormat matroska_demuxer = {
     matroska_read_packet,
     matroska_read_close,
     matroska_read_seek,
+    .metadata_conv = ff_mkv_metadata_conv,
 };