mfxdec: Separate mxf_essence_container_uls for audio and video.

It is a really bad idea to assign a video codec id
when we have set codec_type to audio and vice versa.

Prevents detection of mp2 in mxf as mpeg2video.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

libavformat/mxfdec.c

@@ -949,10 +949,13 @@ static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMe
     return NULL;
 }
 
-static const MXFCodecUL mxf_essence_container_uls[] = {
+static const MXFCodecUL mxf_picture_essence_container_uls[] = {
     // video essence container uls
     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14,    CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
+    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,      CODEC_ID_NONE },
+};
+static const MXFCodecUL mxf_sound_essence_container_uls[] = {
     // sound essence container uls
     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14,       CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
@@ -1304,7 +1307,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
             st->codec->extradata_size = descriptor->extradata_size;
         }
         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-            container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
+            container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
             if (st->codec->codec_id == CODEC_ID_NONE)
                 st->codec->codec_id = container_ul->id;
             st->codec->width = descriptor->width;
@@ -1313,7 +1316,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
                 st->codec->pix_fmt = descriptor->pix_fmt;
             st->need_parsing = AVSTREAM_PARSE_HEADERS;
         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
-            container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
+            container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
             if (st->codec->codec_id == CODEC_ID_NONE)
                 st->codec->codec_id = container_ul->id;
             st->codec->channels = descriptor->channels;