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Make AAC in Ogg (ogm) work.

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This needs the extradata to be extracted.
The approach used is the one MPlayer uses, though it is
unclear whether the 4 bytes extradata that are skipped
should be skipped always or only for AAC.
The AAC parser must be disabled, too, otherwise playback
still does not work.
Fixes trac issue #547.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
Reimar Döffinger 2012-02-06 22:04:46 +01:00
parent 4538d66010
commit 7c8d477299
1 changed files with 18 additions and 3 deletions
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21
libavformat/oggparseogm.c
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@ -23,6 +23,7 @@
**/
#include <stdlib.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
@ -40,6 +41,7 @@ ogm_header(AVFormatContext *s, int idx)
const uint8_t *p = os->buf + os->pstart;
uint64_t time_unit;
uint64_t spu;
uint32_t size;
if(!(*p & 1))
return 0;
@ -67,11 +69,13 @@ ogm_header(AVFormatContext *s, int idx)
acid[4] = 0;
cid = strtol(acid, NULL, 16);
st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
st->need_parsing = AVSTREAM_PARSE_FULL;
// our parser completely breaks AAC in Ogg
if (st->codec->codec_id != CODEC_ID_AAC)
st->need_parsing = AVSTREAM_PARSE_FULL;
}
p += 4; /* useless size field */
size = bytestream_get_le32(&p);
size = FFMIN(size, os->psize);
time_unit = bytestream_get_le64(&p);
spu = bytestream_get_le64(&p);
p += 4; /* default_len */
@ -89,6 +93,17 @@ ogm_header(AVFormatContext *s, int idx)
st->codec->bit_rate = bytestream_get_le32(&p) * 8;
st->codec->sample_rate = spu * 10000000 / time_unit;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
if (size >= 56 && st->codec->codec_id == CODEC_ID_AAC) {
p += 4;
size -= 4;
}
if (size > 52) {
av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
size -= 52;
st->codec->extradata_size = size;
st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
bytestream_get_buffer(&p, st->codec->extradata, size);
}
}
} else if (*p == 3) {
if (os->psize > 8)