diff options
| author | Hardik T Shah <hardik.t.shah@intel.com> | 2014-04-10 18:03:52 +0530 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-08-12 14:01:38 +0530 |
| commit | 9ecb93fb6b4474bee5e700e65663af15088c97c2 (patch) | |
| tree | 95d0a565ba5beb1c566d78b618792d1f2d084814 | |
| parent | 84889d0fa6e61451328a0077946105158ea86a25 (diff) | |
Tinyalsa: add pcm_delay()
ALSA supports reporting of pcm_delay, make that availble to the users of
tinyalsa too
Change-Id: Ic460f5c55137d263fdf7b142503d3bd52c4b7ebd
Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Apelete Seketeli <apeletex.seketeli@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | include/tinyalsa/asoundlib.h | 3 | ||||
| -rw-r--r-- | pcm.c | 9 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/tinyalsa/asoundlib.h b/include/tinyalsa/asoundlib.h index a85e810..eb3e4c4 100644 --- a/include/tinyalsa/asoundlib.h +++ b/include/tinyalsa/asoundlib.h @@ -205,6 +205,9 @@ int pcm_stop(struct pcm *pcm); int pcm_wait(struct pcm *pcm, int timeout); +/* Get the pcm delay */ +long pcm_get_delay(struct pcm *pcm); + /* * MIXER API */ @@ -170,6 +170,7 @@ struct pcm { struct snd_pcm_sync_ptr *sync_ptr; void *mmap_buffer; unsigned int noirq_frames_per_msec; + long pcm_delay; }; unsigned int pcm_get_buffer_size(struct pcm *pcm) @@ -1046,3 +1047,11 @@ int pcm_mmap_read(struct pcm *pcm, void *data, unsigned int count) return pcm_mmap_transfer(pcm, data, count); } + +long pcm_get_delay(struct pcm *pcm) +{ + if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_DELAY, &pcm->pcm_delay) < 0) + return -1; + + return pcm->pcm_delay; +} |