In ts demuxer, support aac flexmux using extradata in iods, issue #2346

Originally committed as revision 25806 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 4 insertions, 80 deletions

diff --git a/libavformat/mov.c b/libavformat/mov.c
index cdaf6d36ba..1fc86ea332 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -31,8 +31,6 @@
 #include "avformat.h"
 #include "riff.h"
 #include "isom.h"
-#include "libavcodec/mpeg4audio.h"
-#include "libavcodec/mpegaudiodata.h"
 #include "libavcodec/get_bits.h"
 
 #if CONFIG_ZLIB
@@ -462,41 +460,6 @@ static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
     return 0;
 }
 
-int ff_mp4_read_descr_len(ByteIOContext *pb)
-{
-    int len = 0;
-    int count = 4;
-    while (count--) {
-        int c = get_byte(pb);
-        len = (len << 7) | (c & 0x7f);
-        if (!(c & 0x80))
-            break;
-    }
-    return len;
-}
-
-static int mp4_read_descr(AVFormatContext *fc, ByteIOContext *pb, int *tag)
-{
-    int len;
-    *tag = get_byte(pb);
-    len = ff_mp4_read_descr_len(pb);
-    dprintf(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
-    return len;
-}
-
-#define MP4ESDescrTag                   0x03
-#define MP4DecConfigDescrTag            0x04
-#define MP4DecSpecificDescrTag          0x05
-
-static const AVCodecTag mp4_audio_types[] = {
-    { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
-    { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
-    { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
-    { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
-    { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
-    { CODEC_ID_NONE,   AOT_NULL },
-};
-
 int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
 {
     AVStream *st;
@@ -507,55 +470,16 @@ int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
     st = fc->streams[fc->nb_streams-1];
 
     get_be32(pb); /* version + flags */
-    len = mp4_read_descr(fc, pb, &tag);
+    len = ff_mp4_read_descr(fc, pb, &tag);
     if (tag == MP4ESDescrTag) {
         get_be16(pb); /* ID */
         get_byte(pb); /* priority */
     } else
         get_be16(pb); /* ID */
 
-    len = mp4_read_descr(fc, pb, &tag);
-    if (tag == MP4DecConfigDescrTag) {
-        int object_type_id = get_byte(pb);
-        get_byte(pb); /* stream type */
-        get_be24(pb); /* buffer size db */
-        get_be32(pb); /* max bitrate */
-        get_be32(pb); /* avg bitrate */
-
-        st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
-        dprintf(fc, "esds object type id 0x%02x\n", object_type_id);
-        len = mp4_read_descr(fc, pb, &tag);
-        if (tag == MP4DecSpecificDescrTag) {
-            dprintf(fc, "Specific MPEG4 header len=%d\n", len);
-            if((uint64_t)len > (1<<30))
-                return -1;
-            av_free(st->codec->extradata);
-            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
-            if (!st->codec->extradata)
-                return AVERROR(ENOMEM);
-            get_buffer(pb, st->codec->extradata, len);
-            st->codec->extradata_size = len;
-            if (st->codec->codec_id == CODEC_ID_AAC) {
-                MPEG4AudioConfig cfg;
-                ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
-                                         st->codec->extradata_size);
-                st->codec->channels = cfg.channels;
-                if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
-                    st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
-                else if (cfg.ext_sample_rate)
-                    st->codec->sample_rate = cfg.ext_sample_rate;
-                else
-                    st->codec->sample_rate = cfg.sample_rate;
-                dprintf(fc, "mp4a config channels %d obj %d ext obj %d "
-                        "sample rate %d ext sample rate %d\n", st->codec->channels,
-                        cfg.object_type, cfg.ext_object_type,
-                        cfg.sample_rate, cfg.ext_sample_rate);
-                if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
-                                                            cfg.object_type)))
-                    st->codec->codec_id = CODEC_ID_AAC;
-            }
-        }
-    }
+    len = ff_mp4_read_descr(fc, pb, &tag);
+    if (tag == MP4DecConfigDescrTag)
+        ff_mp4_read_dec_config_descr(fc, st, pb);
     return 0;
 }