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Re: [Linphone-developers] sound card block size different.

From: meng hongling
Subject: Re: [Linphone-developers] sound card block size different.
Date: Thu, 09 Mar 2006 11:26:04 +0800

and I found another problem,my embedded board only support stereo it send 100 rtp packets per second while the other side of the call sends 50 the sound is distorted.then what is the right way to work out this problem,add a sound driver supporting mono sampling or linphone support stereo sample?but I found Mesage: Opening sound card[/dev/dsp]in playback mode with stereo=0,rate=8000,bits=16,
may I set stereo=1 to fit my device?

From: Kosta Welke <address@hidden>
To: address@hidden
Subject: Re: [Linphone-developers] sound card block size different.
Date: Wed, 08 Mar 2006 21:25:57 +0100

Simon Morlat wrote:
Yes, this big 8192 size is the reason of the sound delay, that may also cause echo and feedback.

Its due to the core_api/linphonecore.c, line 1346. By removing this
check, I was able to playback sound perfectly. It seems my system simply
lies about its blocksize.

Moreover, it seems that on my embedded system, the timestamp generation is broken. Attached is a patch that works flawlessly on my system, while the default behavior is broken. However, I didnt try it on my PC, yet. If you are interested in this patch, please let me know, I can make a
diff against CVS, do a command line switch, or something like that.


<< sendts.diff >>

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