paaudio: properly disconnect streams in fini_*

Currently this needs a workaround due to bug #247 in pulseaudio.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: c81019d550d9c3518185d3d08bd463ae3ccdc392.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio/paaudio.c

@@ -685,6 +685,27 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
     return -1;
 }
 
+static void qpa_simple_disconnect(PAConnection *c, pa_stream *stream)
+{
+    int err;
+
+    pa_threaded_mainloop_lock(c->mainloop);
+    /*
+     * wait until actually connects. workaround pa bug #247
+     * https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/247
+     */
+    while (pa_stream_get_state(stream) == PA_STREAM_CREATING) {
+        pa_threaded_mainloop_wait(c->mainloop);
+    }
+
+    err = pa_stream_disconnect(stream);
+    if (err != 0) {
+        dolog("Failed to disconnect! err=%d\n", err);
+    }
+    pa_stream_unref(stream);
+    pa_threaded_mainloop_unlock(c->mainloop);
+}
+
 static void qpa_fini_out (HWVoiceOut *hw)
 {
     void *ret;
@@ -696,7 +717,7 @@ static void qpa_fini_out (HWVoiceOut *hw)
     audio_pt_join(&pa->pt, &ret, __func__);
 
     if (pa->stream) {
-        pa_stream_unref (pa->stream);
+        qpa_simple_disconnect(pa->g->conn, pa->stream);
         pa->stream = NULL;
     }
 
@@ -716,7 +737,7 @@ static void qpa_fini_in (HWVoiceIn *hw)
     audio_pt_join(&pa->pt, &ret, __func__);
 
     if (pa->stream) {
-        pa_stream_unref (pa->stream);
+        qpa_simple_disconnect(pa->g->conn, pa->stream);
         pa->stream = NULL;
     }