Re: [Linphone-developers] linphone unable to use bluetooth headset

[Simon Morlat]

Hi,

Maybe the quickest workaround is to replace by the in use ring file by a
mono file (the ones provided in the tar.gz are all stereo).

Hope that helps,

Simon

Le dimanche 25 avril 2010 à 14:32 -0500, Alec Kloss a écrit :
> As described elsewhere, I've added 
> 
> alsadev=pcm.bluetooth
> 
> to my .linphonerc.  After selecting the bluetooth option in the
> ring device and pressing play, the play button appears to freeze in
> the down position and no sound is heard on my bluetooth headset.  
> 
> The headset otherwise seems to work correctly (mpd, skype, arecord,
> aplay all interact with the headset as one would expect).  
> 
> I've tried linphone 3.1.1 and 3.2.1 installed on Gentoo with kernel
> 2.6.31-gentoo-r6.
> 
> When trying to play a the ring, the debug log starts spewing this:
> 
> warning: alsa_set_params: Error setting channels.
> warning: alsa_open_w: Error setting params (for 0 micros)
> warning: alsa_set_params: Error setting channels.
> warning: alsa_open_w: Error setting params (for 209987 micros)
> warning: alsa_set_params: Error setting channels.
> warning: alsa_open_w: Error setting params (for 419973 micros)
> warning: alsa_set_params: Error setting channels.
> warning: alsa_open_w: Error setting params (for 629960 micros)
> warning: alsa_set_params: Error setting channels.
> warning: alsa_open_w: Error setting params (for 839946 micros)
> 
> which repeats seemingly forever.
> 
> This is pretty clearly related to linphone or mediastreamer setting
> incorrect channel counts for a mono bluetooth headset.  I don't see
> any way to configure the channels or other audio attributes in
> linphone.  I can confirm that the headset won't emulate two
> channels:
> 
> dr.venture% arecord -D pcm.bluetooth -c 2 -f S16_LE test.wav 
> Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Stereo
> arecord: set_params:984: Channels count non available
> dr.venture% 
> 
> Recording a single channel works fine:
> 
> dr.venture% arecord -D pcm.bluetooth -c 1 -f S16_LE test.wav 
> Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
> ^CAborted by signal Interrupt...
> dr.venture% !aplay
> 
> Thoughts?
> 
> 
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