[Linphone-developers] Choosing a specific device.

[Emmanuel Frecon]

Hello Simon (and others),

I have been looking in the code of the 1.7.1 version for a way to pick 
up a specific video device to use for input. This started when Feisty 
started to support my TV card and insisted on making this /dev/video0. 
Nowadays, my webcam i /dev/video1 and I would like to point linphone at 
this device for input.

It seems that the video section of the configure file can have a device 
property. However, to what I could see this value is carried along all 
the way into mediastreamer, but mediastreamer does not handle it 
properly. video_stream_start() takes a device parameter, but this 
parameter is never sent further to the filter when doing the start. The 
MS_V4L_START filter function is a function that takes no argument. I 
wonder if that would be the place to handle the device to choose or not. 
I saw that the linux v4l implementation tries to optimise the 
opening/closing of video devices, trying to avoid reopening devices that 
are already opened, and so on. So it should not be that hard to modify 
the code. The problem is that I do no nothing about the Windows 
implementation, and that I suppose that both implementations would need 
to be modified in concert to make this change usefull. What do you say?

/Emmanuel