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tinyalsa: add pcm_get_subdevice()

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The users of tinyalsa had no way of knowing on which subdevice a stream had
been created.  A new API, "unsigned int pcm_get_subdevice(struct *pcm)" returns
it.  This information is filled during the pcm_open()

Change-Id: Ie866e10e06ce6691ede09e2ca46a24441723ea8b
Signed-off-by: David Wagner <david.wagner@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
David Wagner
2014-04-02 15:12:54 +02:00
committed by Vinod Koul
parent 9ecb93fb6b
commit 4cddf19dfc
2 changed files with 10 additions and 0 deletions
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include/tinyalsa/asoundlib.h
+3
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@@ -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.