[#2333] Fix Pulseaudio Capture

Setting pulseaudio capture stream parameters using alsa realtime scheduling

sflphone-common/src/audio/pulseaudio/audiostream.cpp

@@ -184,36 +184,22 @@ AudioStream::createStream (pa_context* c)
     // parameters are defined as number of bytes
     // 2048 bytes (1024 int16) is 20 ms at 44100 Hz 
     if (_streamType == PLAYBACK_STREAM) {
-	/*
-        attributes->maxlength = (uint32_t) -1;
-        attributes->tlength = 1024;
-        attributes->prebuf = (uint32_t) -1;      
-        attributes->minreq = (uint32_t) -1;
-        attributes->fragsize = (uint32_t) -1;
-	*/
 	
         attributes->maxlength = 88200;
         attributes->tlength = 44100;
         attributes->prebuf = 4096;      
         attributes->minreq = 2048;
         attributes->fragsize = 4096;
-	
-        // pa_stream_connect_playback( s , NULL , attributes, PA_STREAM_NOFLAGS, &_volume, NULL);
-        // pa_stream_connect_playback (s , NULL , attributes, PA_STREAM_START_CORKED, &_volume, NULL);
+
 	pa_stream_connect_playback( s , NULL , attributes, PA_STREAM_ADJUST_LATENCY, &_volume, NULL);
     } else if (_streamType == CAPTURE_STREAM) {
 
-        // attributes->maxlength = 66500;
-        // attributes->fragsize = (uint32_t)-1;
-
-        attributes->maxlength = (uint32_t) -1;
-        attributes->tlength = (uint32_t) -1;
-        attributes->prebuf = (uint32_t) -1;
-        attributes->minreq = (uint32_t) -1;
-        attributes->fragsize = 1024;
+        attributes->maxlength = 88200;
+        attributes->tlength = 44100;
+        attributes->prebuf = 4096;
+        attributes->minreq = 2048;
+        attributes->fragsize = 4096;
 
-        // pa_stream_connect_record (s , NULL , attributes , PA_STREAM_START_CORKED);
-        // pa_stream_connect_record( s , NULL , attributes , PA_STREAM_INTERPOLATE_TIMING );
 	pa_stream_connect_record( s, NULL, attributes, PA_STREAM_ADJUST_LATENCY);
     } else if (_streamType == UPLOAD_STREAM) {
         pa_stream_connect_upload (s , 1024);

sflphone-common/src/audio/pulseaudio/pulselayer.cpp

@@ -155,6 +155,9 @@ void
 PulseLayer::connectPulseAudioServer (void)
 {
     _debug ("PulseLayer::connectPulseAudioServer \n");
+
+    setenv("PULSE_PROP_media.role", "phone", 1);
+
     pa_context_flags_t flag = PA_CONTEXT_NOAUTOSPAWN ;
 
     pa_threaded_mainloop_lock (m);

sflphone-common/src/audio/pulseaudio/pulselayer.h

@@ -28,6 +28,8 @@
 #include <pulse/pulseaudio.h>
 #include <pulse/stream.h>
 
+#include <stdlib.h>
+
 #define PLAYBACK_STREAM_NAME	    "SFLphone out"
 #define CAPTURE_STREAM_NAME	    "SFLphone in"