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Add support for aac streams in mp4/mov without extradata.

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This commit is contained in:
Benjamin Larsson
2011-06-27 23:39:12 -07:00
committed by Alex Converse
parent 4bfe064460
commit dafaef2fe1
2 changed files with 53 additions and 14 deletions
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25
libavformat/utils.c
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@@ -2207,11 +2207,7 @@ int av_find_stream_info(AVFormatContext *ic)
for(i=0;i<ic->nb_streams;i++) {
AVCodec *codec;
st = ic->streams[i];
if (st->codec->codec_id == CODEC_ID_AAC) {
st->codec->sample_rate = 0;
st->codec->frame_size = 0;
st->codec->channels = 0;
}
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
/* if(!st->time_base.num)
@@ -2229,13 +2225,6 @@ int av_find_stream_info(AVFormatContext *ic)
assert(!st->codec->codec);
codec = avcodec_find_decoder(st->codec->codec_id);
/* Force decoding of at least one frame of codec data
* this makes sure the codec initializes the channel configuration
* and does not trust the values from the container.
*/
if (codec && codec->capabilities & CODEC_CAP_CHANNEL_CONF)
st->codec->channels = 0;
/* Ensure that subtitle_header is properly set. */
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
&& codec && !st->codec->codec)
@@ -2377,8 +2366,16 @@ int av_find_stream_info(AVFormatContext *ic)
/* if still no information, we try to open the codec and to
decompress the frame. We try to avoid that in most cases as
it takes longer and uses more memory. For MPEG-4, we need to
decompress for QuickTime. */
if (!has_codec_parameters(st->codec) || !has_decode_delay_been_guessed(st))
decompress for QuickTime.
If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
least one frame of codec data, this makes sure the codec initializes
the channel configuration and does not only trust the values from the container.
*/
if (!has_codec_parameters(st->codec) ||
!has_decode_delay_been_guessed(st) ||
(st->codec->codec &&
st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))
try_decode_frame(st, pkt);
st->codec_info_nb_frames++;