mov: export audio service type as side data

libavformat/mov.c

@@ -620,12 +620,18 @@ static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     AVStream *st;
+    enum AVAudioServiceType *ast;
     int ac3info, acmod, lfeon, bsmod;
 
     if (c->fc->nb_streams < 1)
         return 0;
     st = c->fc->streams[c->fc->nb_streams-1];
 
+    ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
+                                                            sizeof(*ast));
+    if (!ast)
+        return AVERROR(ENOMEM);
+
     ac3info = avio_rb24(pb);
     bsmod = (ac3info >> 14) & 0x7;
     acmod = (ac3info >> 11) & 0x7;
@@ -634,9 +640,11 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
     if (lfeon)
         st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
-    st->codec->audio_service_type = bsmod;
+    *ast = bsmod;
     if (st->codec->channels > 1 && bsmod == 0x7)
-        st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+        *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+
+    st->codec->audio_service_type = *ast;
 
     return 0;
 }
@@ -644,12 +652,18 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     AVStream *st;
+    enum AVAudioServiceType *ast;
     int eac3info, acmod, lfeon, bsmod;
 
     if (c->fc->nb_streams < 1)
         return 0;
     st = c->fc->streams[c->fc->nb_streams-1];
 
+    ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
+                                                            sizeof(*ast));
+    if (!ast)
+        return AVERROR(ENOMEM);
+
     /* No need to parse fields for additional independent substreams and its
      * associated dependent substreams since libavcodec's E-AC-3 decoder
      * does not support them yet. */
@@ -662,9 +676,11 @@ static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     if (lfeon)
         st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
     st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
-    st->codec->audio_service_type = bsmod;
+    *ast = bsmod;
     if (st->codec->channels > 1 && bsmod == 0x7)
-        st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+        *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+
+    st->codec->audio_service_type = *ast;
 
     return 0;
 }