set alac channels from extradata, fix alac mono in m4a
authorBaptiste Coudurier <baptiste.coudurier@gmail.com>
Thu, 18 Dec 2008 09:17:19 +0000 (09:17 +0000)
committerBaptiste Coudurier <baptiste.coudurier@gmail.com>
Thu, 18 Dec 2008 09:17:19 +0000 (09:17 +0000)
Originally committed as revision 16212 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mov.c

index dd44bab..e196365 100644 (file)
@@ -1033,8 +1033,10 @@ static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
         st->codec->block_align = sc->bytes_per_frame;
         break;
     case CODEC_ID_ALAC:
-        if (st->codec->extradata_size == 36)
+        if (st->codec->extradata_size == 36) {
             st->codec->frame_size = AV_RB32((st->codec->extradata+12));
+            st->codec->channels   = AV_RB8  (st->codec->extradata+21);
+        }
         break;
     default:
         break;