diff options
| -rw-r--r-- | include/tinyalsa/asoundlib.h | 3 | ||||
| -rw-r--r-- | pcm.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/tinyalsa/asoundlib.h b/include/tinyalsa/asoundlib.h index eb3e4c4..045c8b5 100644 --- a/include/tinyalsa/asoundlib.h +++ b/include/tinyalsa/asoundlib.h @@ -179,6 +179,9 @@ unsigned int pcm_bytes_to_frames(struct pcm *pcm, unsigned int bytes); int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail, struct timespec *tstamp); +/* Returns the subdevice on which the pcm has been opened */ +unsigned int pcm_get_subdevice(struct pcm *pcm); + /* Write data to the fifo. * Will start playback on the first write or on a write that * occurs after a fifo underrun. @@ -171,6 +171,7 @@ struct pcm { void *mmap_buffer; unsigned int noirq_frames_per_msec; long pcm_delay; + unsigned int subdevice; }; unsigned int pcm_get_buffer_size(struct pcm *pcm) @@ -183,6 +184,11 @@ const char* pcm_get_error(struct pcm *pcm) return pcm->error; } +unsigned int pcm_get_subdevice(struct pcm *pcm) +{ + return pcm->subdevice; +} + static int oops(struct pcm *pcm, int e, const char *fmt, ...) { va_list ap; @@ -654,6 +660,7 @@ struct pcm *pcm_open(unsigned int card, unsigned int device, oops(pcm, errno, "cannot get info"); goto fail_close; } + pcm->subdevice = info.subdevice; param_init(¶ms); param_set_mask(¶ms, SNDRV_PCM_HW_PARAM_FORMAT, |