Hi,
I saw the tinyalsa utility is available in /system/bin of android AOSP(Lollipop) for Dragonboard. If I try using this for playing a PCM (Wav) file, it is not able to play. Is tinyalsa supported on this board? If not any guidance available for configuring or using it or any alternatives?
The sequence of events like this:
-
Played Riff1.wav on dragon board booted to android GUI. The output of below command is as under:
root@msm8916_64:/system/bin # cat /proc/asound/card0/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 960
buffer_size: 3840 -
Played the same file using tinyalsa:
root@msm8916_64:/sdcard/Music # /system/bin/tinyplay Riff1.wav
Playing sample: 2 ch, 44100 hz, 16 bit
prepare_error
Error playing sample
When I analyzed further, error coming from kernel at soc-pcm.c @ /* there is no point preparing this FE if there are no BEs */
if (list_empty(&fe->dpcm[stream].be_clients)) {
Note that the Riff1.wav is 44100HZ with 2 channels, when checked in Audacity. From that sense it is not clear why playback from android GUI reports it as 48000HZ.
Any suggestions on above issues are very much helpful.
Regards,
Vishwanath