Nigel Hsiung wrote: > Hi Benny and list, > > I've been checking out pjsip-0.7.0 for sometime and desperately need > whatever help that u guys can. > All i want is to run the whole pjsip package minus port audio, coz my > sound system is a little bit different. > > I took a leaf out of symbian_sound.cpp and modified pasound.c to fit my > arm system. Using snd_info sample application i can see that it can open > and close the audio correctly. Now i'm stuck at the callbacks - i'm > unable to figure out how PaRecorderCallback() and PaPlayerCallback() > performs audio read and write. For example in - static int > PaRecorderCallback(const void *input, > void *output, > unsigned long frameCount, > //const PaStreamCallbackTimeInfo* timeInfo, > //PaStreamCallbackFlags statusFlags, > void *userData ); > both *input and *output looks unused, while userData hold pj_media > stream info. How does the function returns the audio data that was read. In PaRecorderCallback(), the "input" argument is used! That's where PortAudio reports captured frames to pjmedia. -benny
