optionally take PulseAudio source name

src/main.cpp

@@ -484,14 +484,14 @@ int main(int argc, char *argv[])
         { "codec-param",     required_argument, NULL, 'p' },
         { "device",          required_argument, NULL, 'd' },
         { "log",             no_argument,       NULL, 'l' },
-        { "enable-audio",    no_argument,       NULL, 'a' },
+        { "audio",           optional_argument, NULL, 'a' },
         { 0,                 0,                 NULL,  0  }
     };
 
     int c, i;
     std::string param;
     size_t pos;
-    while((c = getopt_long(argc, argv, "o:f:g:c:p:d:la", opts, &i)) != -1)
+    while((c = getopt_long(argc, argv, "o:f:g:c:p:d:la::", opts, &i)) != -1)
     {
         switch(c)
         {
@@ -521,6 +521,7 @@ int main(int argc, char *argv[])
 
             case 'a':
                 params.enable_audio = true;
+                pulseParams.audio_source = optarg ? strdup(optarg) : NULL;
                 break;
 
             case 'p':

src/pulse.cpp

@@ -30,13 +30,14 @@ PulseReader::PulseReader(PulseReaderParams _p)
     };
 
     int perr;
-    pa = pa_simple_new(NULL, "wf-recorder", PA_STREAM_RECORD, NULL,
-        "wf-recorder", &sample_spec, &map, &attr, &perr);
+    std::cout << "Using PulseAudio device: " << (params.audio_source ?: "default") << std::endl;
+    pa = pa_simple_new(NULL, "wf-recorder3", PA_STREAM_RECORD, params.audio_source,
+        "wf-recorder3", &sample_spec, &map, &attr, &perr);
 
     if (!pa)
     {
-        std::cerr << "Failed to connect to PulseAudio,"
-            << " recording won't have audio" << std::endl;
+        std::cerr << "Failed to connect to PulseAudio: " << pa_strerror(perr)
+            << "\nRecording won't have audio" << std::endl;
     }
 }
 
@@ -48,7 +49,8 @@ bool PulseReader::loop()
     int perr;
     if (pa_simple_read(pa, buffer.data(), buffer.size(), &perr) < 0)
     {
-        std::cerr << "Failed to read from PulseAudio stream!" << std::endl;
+        std::cerr << "Failed to read from PulseAudio stream: "
+            << pa_strerror(perr) << std::endl;
         return false;
     }
 

src/pulse.hpp

@@ -8,6 +8,8 @@
 struct PulseReaderParams
 {
     size_t audio_frame_size;
+    /* Can be NULL */
+    char *audio_source;
 };
 
 class PulseReader