Well now it's working :-) ! Thank you very much. Just to understand more deeply, I'm using only audio frame so the resampling of non-audio sample should not occurs. Why is it occurring ? Cheers, Mathieu Nanang Izzuddin a ?crit : > Sorry, just recheck this and realized this is bug of resample port, > when frame from the downport is non-audio type, the resample port copy > the frame returned from downport carelessly. It's just been fixed and > committed into the latest SVN (r1955). > > Thanks for the report! > > Regards, > nanang > > > 2008/5/14 Mathieu Monney <zittix_all at xwaves.net>: > >> Thank you for your answer. >> >> Well I'm working with mono-audio. I'm using the stock PJSUA app with my >> audio driver. So I think it's mono audio. >> >> I have just tried with the latest SVN version and it gives me exactly >> the same error. I actually found the bug. I'm only allowing to open the >> device at 8000 Hz. But PJSUA want a clock rate of 16000 Hz (don't know >> why, seems to be config related). So there should be up/down sampling of >> factor 2. When I'm playing audio, PJSUA need to downsample the audio to >> 8000 Hz. The frame size (mono or stereo it doesn't matter) should half >> the frame size of the original audio data. The bug is here. >> >> In resample_port.c of the latest SVN version, in function >> resample_get_frame(), there is the following line: >> >> tmp_frame.size = rport->dn_port->info.bytes_per_frame; >> >> As I understand it tells that the size of the frame is equal to the >> master conf port frame size. Actually the master conf port sampling rate >> is 16000 which twice the frame size of my audio driver. After that, the >> line: >> >> status = pjmedia_port_get_frame( rport->dn_port, &tmp_frame); >> >> gets the frame with the wrong size (it doesn't seg fault here). >> >> and then the down sampling process is done and the segfault appear. So I >> think (I'm sure I'm missing something but what ?) there is confusion in >> frame size in the down sampling stuffs. >> >> If I allocate a buffer of twice the frame size in my audio driver it fix >> the seg fault but then the audio is corrupt.. >> >> Any clues appreciated :-)! >> >> Cheers, >> >> Mathieu >> >> Benny Prijono a ?crit : >> >>> On Tue, May 13, 2008 at 12:57 PM, Mathieu Monney <zittix_all at xwaves.net> wrote: >>> >>> >>>> Hi, >>>> >>>> I'm trying to develop a gstreamer audio back-end for PJSIP but I get a >>>> seg fault in the resampling stuffs When I use the rec/play examples my >>>> audio driver works just fine but when I'm using pjsua it seg fault. >>>> >>>> >>> Yep. The rec/play samples don't use resample. >>> >>> >>> >>>> I'm using PJSIP release 0.8.0. The seg fault comes from the fact that in >>>> the resampling port the frame size in byte is equal to twice the frame >>>> size in my audio driver. >>>> >>>> In the resample_get_frame() function in file resample_port.c at line 177 >>>> the size is equal to 320 (for my case). In my audio driver I compute the >>>> frame size as following: >>>> samples_per_frame*(bits_per_sample>>3)*channel_count >>>> >>>> which gives half the value above. But my computation seems correct. Is a >>>> bug or am I missing something ? >>>> >>>> >>>> >>> Well which one is correct is indeed the question. Are you working with >>> non-mono audio? >>> >>> In version 0.8 and older, the convention about samples_per_frame value >>> was not clear when channel_count is non-mono. That is, say if the >>> audio is stereo, does the samples_per_frame value represent the >>> combined/2-channels frame length, or does it only represent the size >>> of the mono frame. If I recall correctly some objects in pjmedia used >>> different convention hence probably what you saw. >>> >>> The convention that has been established now (in SVN version) is the >>> samples_per_frame represents the total length of the frame, that is >>> it's equal to mono_count*channel_count (Nanang can correct me if I'm >>> wrong). So because of this you may be better working with the SVN >>> version instead. >>> >>> Cheers >>> Benny >>> >>> >>> >>>> Thank you. >>>> >>>> Mathieu >>>> >>>> _______________________________________________ >>>> Visit our blog: http://blog.pjsip.org >>>> >>>> pjsip mailing list >>>> pjsip at lists.pjsip.org >>>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >>>> >>>> >>>> >>> _______________________________________________ >>> Visit our blog: http://blog.pjsip.org >>> >>> pjsip mailing list >>> pjsip at lists.pjsip.org >>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >>> >>> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >
