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| author | Nicolas George <nicolas.george@normalesup.org> | 2011-03-10 12:10:34 +0100 |
|---|---|---|
| committer | Nicolas George <nicolas.george@normalesup.org> | 2011-03-26 16:50:09 +0100 |
| commit | 813dbb44424846274a318bfc6d02a53b4189f884 (patch) | |
| tree | 6343ebd25d52e3c2ee587287a8a720f3b603c6ea /libavdevice/alsa-audio.h | |
| parent | 98ac192b4e4df786107d7f6adb3e4e7d1336510e (diff) | |
ALSA: implement channel layout for playback.
Currently, only S16 quad, 5.1 and 7.1 are implemented.
Implementing support for other formats/layouts and capture should be
straightforward.
7.1 support by Carl Eugen Hoyos.
Diffstat (limited to 'libavdevice/alsa-audio.h')
| -rw-r--r-- | libavdevice/alsa-audio.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavdevice/alsa-audio.h b/libavdevice/alsa-audio.h index 949383157e..8c7c516585 100644 --- a/libavdevice/alsa-audio.h +++ b/libavdevice/alsa-audio.h @@ -39,10 +39,15 @@ other formats */ #define DEFAULT_CODEC_ID AV_NE(CODEC_ID_PCM_S16BE, CODEC_ID_PCM_S16LE) +typedef void (*ff_reorder_func)(const void *, void *, int); + typedef struct { snd_pcm_t *h; int frame_size; ///< preferred size for reads and writes int period_size; ///< bytes per sample * channels + ff_reorder_func reorder_func; + void *reorder_buf; + int reorder_buf_size; ///< in frames } AlsaData; /** @@ -82,4 +87,6 @@ int ff_alsa_close(AVFormatContext *s1); */ int ff_alsa_xrun_recover(AVFormatContext *s1, int err); +int ff_alsa_extend_reorder_buf(AlsaData *s, int size); + #endif /* AVDEVICE_ALSA_AUDIO_H */ |