I am trying to play 2 channels in which, audio in one and silence in other channel is being played.
$ gst-launch \
interleave name=i ! alsasink
filesrc location=/home/test1.mp3 \
! decodebin ! audioconvert \
! audio/x-raw-int,channels=1 ! i. \
audiotestsrc wave=silence \
! decodebin ! audioconvert \
! audio/x-raw-int,channels=1 ! volume volume=1.0 ! i.
After 10 sec I want to play silence in first and some audio in the second channel.
$ gst-launch \
interleave name=i ! alsasink \
audiotestsrc wave=silence \
! decodebin ! audioconvert \
! audio/x-raw-int,channels=1 ! i. \
filesrc location=/home/test2.mp3 \
! decodebin ! audioconvert \
! audio/x-raw-int,channels=1 ! volume volume=1.0 ! i.
This can be done on PC's side, while playing these pipeline in two different terminals or making one of them run in background. But when I am playing one pipeline on am335x board and trying to play the other one, its something like this:
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstAlsaSink:alsasink0: Could not open audio device for playback.
Device is being used by another application.
Additional debug info:
gstalsasink.c(697): gst_alsasink_open (): /GstPipeline:pipeline0/GstAlsaSink:alsasink0:
Device 'default' is busy
Setting pipeline to NULL ...
Freeing pipeline ...
when we check in gstalsasink.c it is calling snd_pcm_open in non-blocking mode .
CHECK (snd_pcm_open (&alsa->handle, alsa->device, SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK), open_error);
Then why its blocking other events to use the audio device?Is it possible in TI am335x evm to opening alsasink by different audios at different times?
Can anyone suggest me what to do for the target side ,since PC side alsasink is perfect.