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Code Issues Releases Activity

Allow remuxing of explicitly signalled AAC files into ADTS.

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The ADTS output files are not explicitly signaled because the format
does not support explicit signalling.

Originally committed as revision 23935 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2010-07-01 14:49:32 +00:00
parent 8a472821a4
commit 5935f9d6bd
1 changed files with 10 additions and 7 deletions
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17
libavformat/adtsenc.c
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@ -23,6 +23,7 @@
#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/mpeg4audio.h"
#include "avformat.h"
#include "adts.h"
@ -30,11 +31,17 @@ int ff_adts_decode_extradata(AVFormatContext *s, ADTSContext *adts, uint8_t *buf
{
GetBitContext gb;
PutBitContext pb;
MPEG4AudioConfig m4ac;
int off;
init_get_bits(&gb, buf, size * 8);
adts->objecttype = get_bits(&gb, 5) - 1;
adts->sample_rate_index = get_bits(&gb, 4);
adts->channel_conf = get_bits(&gb, 4);
off = ff_mpeg4audio_get_config(&m4ac, buf, size);
if (off < 0)
return off;
skip_bits_long(&gb, off);
adts->objecttype = m4ac.object_type - 1;
adts->sample_rate_index = m4ac.sampling_index;
adts->channel_conf = m4ac.chan_config;
if (adts->objecttype > 3U) {
av_log(s, AV_LOG_ERROR, "MPEG-4 AOT %d is not allowed in ADTS\n", adts->objecttype+1);
@ -52,10 +59,6 @@ int ff_adts_decode_extradata(AVFormatContext *s, ADTSContext *adts, uint8_t *buf
av_log(s, AV_LOG_ERROR, "Scalable configurations are not allowed in ADTS\n");
return -1;
}
if (get_bits(&gb, 1)) {
av_log_missing_feature(s, "Signaled SBR or PS", 0);
return -1;
}
if (!adts->channel_conf) {
init_put_bits(&pb, adts->pce_data, MAX_PCE_SIZE);