add OTF support for attachments

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/avcodec.h

@@ -455,6 +455,7 @@ enum AVCodecID {
     AV_CODEC_ID_BINTEXT    = MKBETAG('B','T','X','T'),
     AV_CODEC_ID_XBIN       = MKBETAG('X','B','I','N'),
     AV_CODEC_ID_IDF        = MKBETAG( 0 ,'I','D','F'),
+    AV_CODEC_ID_OTF        = MKBETAG( 0 ,'O','T','F'),
 
     AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
 

libavcodec/old_codec_ids.h

@@ -385,6 +385,7 @@
     CODEC_ID_BINTEXT    = MKBETAG('B','T','X','T'),
     CODEC_ID_XBIN       = MKBETAG('X','B','I','N'),
     CODEC_ID_IDF        = MKBETAG( 0 ,'I','D','F'),
+    CODEC_ID_OTF        = MKBETAG( 0 ,'O','T','F'),
 
     CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
 

libavformat/matroska.c

@@ -93,6 +93,7 @@ const CodecMime ff_mkv_mime_tags[] = {
     {"image/tiff"                 , AV_CODEC_ID_TIFF},
     {"application/x-truetype-font", AV_CODEC_ID_TTF},
     {"application/x-font"         , AV_CODEC_ID_TTF},
+    {"application/vnd.ms-opentype", AV_CODEC_ID_OTF},
 
     {""                           , AV_CODEC_ID_NONE}
 };