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Add audio channel layout API to libavcodec.

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Originally committed as revision 15762 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Peter Ross
2008-11-01 05:03:42 +00:00
parent 3a57547e33
commit 0d72e7d0ae
4 changed files with 159 additions and 19 deletions
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20
libavcodec/audioconvert.h
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@ -54,6 +54,26 @@ const char *avcodec_get_sample_fmt_name(int sample_fmt);
*/
enum SampleFormat avcodec_get_sample_fmt(const char* name);
/**
* @return NULL on error
*/
const char *avcodec_get_channel_name(int channel_id);
/**
* Return description of channel layout
*/
void avcodec_get_channel_layout_string(char *buf, int buf_size, int nb_channels, int64_t channel_layout);
/**
* Guess the channel layout
* @param nb_channels
* @param codec_id Codec identifier, or CODEC_ID_NONE if unknown
* @param fmt_name Format name, or NULL if unknown
* @return Channel layout mask
*/
int64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);
struct AVAudioConvert;
typedef struct AVAudioConvert AVAudioConvert;