Hi all,
I've noticed a problem where PJSip cannot open the audio device if the audio category changes away from kAudioSessionCategory_PlayAndRecord.
E.g. in our app we have sound effects which require the audio category to be changed to ambient. Once this happens when you try to place a SIP call you will see the following output:
07:50:31.682 pjsua_media.c Opening sound device PCM at 16000/1/20ms
07:50:32.062 pjsua_media.c Opening sound device PCM at 44100/1/20ms
07:50:32.447 pjsua_media.c Opening sound device PCM at 48000/1/20ms
07:50:32.846 pjsua_media.c Opening sound device PCM at 32000/1/20ms
07:50:33.246 pjsua_media.c Opening sound device PCM at 16000/1/20ms
07:50:33.647 pjsua_media.c Opening sound device PCM at 8000/1/20ms
07:50:34.044 pjsua_media.c Unable to open sound device: Unknown error -1768403636 [status=-1768403636]
Then the call will fail.
Having dug around in coreaudio_dev I notice the playandrecord category is only set at startup, the following diff makes PJSip set this as it is creating the stream, and fixes the problem.
Index: pjmedia/src/pjmedia-audiodev/coreaudio_dev.c
===================================================================
--- pjmedia/src/pjmedia-audiodev/coreaudio_dev.c (revision 3415)
+++ pjmedia/src/pjmedia-audiodev/coreaudio_dev.c (working copy)
@@ -1513,6 +1513,21 @@
PJMEDIA_AUD_DEV_CAP_EC, &ec);
}
+#if !COREAUDIO_MAC
+ /* We want to be able to open playback and recording streams */
+ UInt32 audioCategory;
+ OSStatus ostatus;
+ audioCategory = kAudioSessionCategory_PlayAndRecord;
+ ostatus = AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
+ sizeof(audioCategory),
+ &audioCategory);
+ if (ostatus != kAudioSessionNoError) {
+ PJ_LOG(4, (THIS_FILE,
+ "Error: cannot set the audio session category (%i)",
+ ostatus));
+ }
+#endif
+
strm->io_units[0] = strm->io_units[1] = NULL;
if (param->dir == PJMEDIA_DIR_CAPTURE_PLAYBACK &&
param->rec_id == param->play_id)
Regards,
--
Tony Million
