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Code Issues Releases Activity

Check that channel layout is compatible with number of channels for

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output audio stream.

Originally committed as revision 18621 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2009-04-19 14:05:55 +00:00
parent dc1ed61432
commit be233a5691
3 changed files with 15 additions and 0 deletions
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2
ffmpeg.c
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@ -3212,6 +3212,8 @@ static void new_audio_stream(AVFormatContext *oc)
audio_enc->channels = audio_channels;
audio_enc->sample_fmt = audio_sample_fmt;
audio_enc->channel_layout = channel_layout;
if (avcodec_channel_layout_num_channels(channel_layout) != audio_channels)
audio_enc->channel_layout = 0;
if(codec && codec->sample_fmts){
const enum SampleFormat *p= codec->sample_fmts;

9
libavcodec/audioconvert.c
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@ -153,6 +153,15 @@ void avcodec_get_channel_layout_string(char *buf, int buf_size, int nb_channels,
}
}
int avcodec_channel_layout_num_channels(int64_t channel_layout)
{
int count;
uint64_t x = channel_layout;
for (count = 0; x; count++)
x &= x-1; // unset lowest set bit
return count;
}
struct AVAudioConvert {
int in_channels, out_channels;
int fmt_pair;

4
libavcodec/audioconvert.h
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@ -73,6 +73,10 @@ void avcodec_get_channel_layout_string(char *buf, int buf_size, int nb_channels,
*/
int64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);
/**
* @return the number of channels in the channel layout.
*/
int avcodec_channel_layout_num_channels(int64_t channel_layout);
struct AVAudioConvert;
typedef struct AVAudioConvert AVAudioConvert;