diff options
Diffstat (limited to 'include/pcm_ioplug.h')
| -rw-r--r-- | include/pcm_ioplug.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/pcm_ioplug.h b/include/pcm_ioplug.h index 1c845940..e75f973e 100644 --- a/include/pcm_ioplug.h +++ b/include/pcm_ioplug.h @@ -65,6 +65,8 @@ typedef snd_pcm_ioplug_callback snd_pcm_ioplug_callback_t; */ #define SND_PCM_IOPLUG_FLAG_LISTED (1<<0) /**< list up this PCM */ #define SND_PCM_IOPLUG_FLAG_MONOTONIC (1<<1) /**< monotonic timestamps */ +/** hw pointer wrap around at boundary instead of buffer_size */ +#define SND_PCM_IOPLUG_FLAG_BOUNDARY_WA (1<<2) /* * Protocol version @@ -133,6 +135,9 @@ struct snd_pcm_ioplug_callback { int (*stop)(snd_pcm_ioplug_t *io); /** * get the current DMA position; required, called inside mutex lock + * \return buffer position up to buffer_size or + * when #SND_PCM_IOPLUG_FLAG_BOUNDARY_WA flag is set up to boundary or + * a negative error code for Xrun */ snd_pcm_sframes_t (*pointer)(snd_pcm_ioplug_t *io); /** |