pass QDMC extradata to the decoder

Makes playing QDMC files in MPlayer work when using the libavformat demuxer.
Problem was that the extradata was not passed from demuxer to decoder.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

libavcodec/avcodec.h

@@ -389,6 +389,7 @@ enum CodecID {
     CODEC_ID_BINKAUDIO_RDFT,
     CODEC_ID_BINKAUDIO_DCT,
     CODEC_ID_AAC_LATM,
+    CODEC_ID_QDMC,
 
     /* subtitle codecs */
     CODEC_ID_DVD_SUBTITLE= 0x17000,

libavformat/isom.c

@@ -249,6 +249,7 @@ const AVCodecTag codec_movaudio_tags[] = {
     { CODEC_ID_QCELP, MKTAG('Q','c','l','q') },
     { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */
 
+    { CODEC_ID_QDMC, MKTAG('Q', 'D', 'M', 'C') }, /* QDMC */
     { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
 
     { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },

libavformat/mov.c

@@ -769,8 +769,8 @@ static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
     if((uint64_t)atom.size > (1<<30))
         return -1;
 
-    if (st->codec->codec_id == CODEC_ID_QDM2) {
-        // pass all frma atom to codec, needed at least for QDM2
+    if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
+        // pass all frma atom to codec, needed at least for QDMC and QDM2
         av_free(st->codec->extradata);
         st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
         if (!st->codec->extradata)