On Thu, Jul 25, 2013 at 10:06:52AM +0200, Jaroslav Kysela wrote:
Date 24.7.2013 19:09, Vinod Koul wrote:
Hey Takashi,
We were looking to find the substream index in the userspace for the device opened (in case we support multiple substreams and mix them). Since we also wanted to have some specific alsa controls for each substream the problem of not knowing substream in usermode make stuff interesting!
The substream/subdevice index is in the snd_pcm_info field, so you can correlate the PCM with the controls from the control API.
snd_pcm_info_get_subdevice()
This looks intresting, Thanks Jarsolav and Raymond.
If I get snd_pcm_info after the stream has been created I should see the subdevice and thus use alsa controls corrorsponding.
Let me test this, it should work
~Vinod