[pulseaudio-discuss] [PATCH 3/3] bluetooth: suspend source when stream stops

[Frédéric Dalleau]

---
 src/modules/bluetooth/module-bluetooth-device.c |   53 +++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)

diff --git a/src/modules/bluetooth/module-bluetooth-device.c b/src/modules/bluetooth/module-bluetooth-device.c
index 07fcb94..8e5a8f1 100644
--- a/src/modules/bluetooth/module-bluetooth-device.c
+++ b/src/modules/bluetooth/module-bluetooth-device.c
@@ -2795,6 +2795,57 @@ static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *us
                 }
                 break;
         }
+    } else if (dbus_message_is_signal(m, "org.bluez.AudioSource", "PropertyChanged")) {
+        const char *key;
+        DBusMessageIter iter;
+        DBusMessageIter variant;
+        pa_bt_audio_state_t state = PA_BT_AUDIO_STATE_INVALID;
+
+        if (!dbus_message_iter_init(m, &iter)) {
+            pa_log("Failed to parse PropertyChanged: %s", err.message);
+            goto fail;
+        }
+
+        if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) {
+            pa_log("Property name not a string.");
+            goto fail;
+        }
+
+        dbus_message_iter_get_basic(&iter, &key);
+
+        if (!dbus_message_iter_next(&iter)) {
+            pa_log("Property value missing");
+            goto fail;
+        }
+
+        dbus_message_iter_recurse(&iter, &variant);
+
+        if (dbus_message_iter_get_arg_type(&variant) == DBUS_TYPE_STRING) {
+            const char *value;
+            dbus_message_iter_get_basic(&variant, &value);
+
+            if (pa_streq(key, "State")) {
+                pa_log_debug("dbus: AudioSource property 'State' changed to value '%s'", value);
+                state = pa_bt_audio_state_from_string(value);
+            }
+        }
+
+        switch(state) {
+            case PA_BT_AUDIO_STATE_INVALID:
+            case PA_BT_AUDIO_STATE_DISCONNECTED:
+            case PA_BT_AUDIO_STATE_CONNECTING:
+                goto fail;
+            case PA_BT_AUDIO_STATE_CONNECTED:
+                if (u->profile == PROFILE_A2DP_SOURCE) {
+                    pa_source_suspend(u->source, TRUE, PA_SUSPEND_IDLE);
+                }
+                break;
+            case PA_BT_AUDIO_STATE_PLAYING:
+                if (u->profile == PROFILE_A2DP_SOURCE) {
+                    pa_source_suspend(u->source, FALSE, PA_SUSPEND_IDLE);
+                }
+                break;
+        }
     }
 
 fail:
@@ -4030,6 +4081,7 @@ int pa__init(pa_module* m) {
                 mike,
                 "type='signal',sender='org.bluez',interface='org.bluez.MediaTransport',member='PropertyChanged'",
                 "type='signal',sender='org.bluez',interface='org.bluez.HandsfreeGateway',member='PropertyChanged'",
+                "type='signal',sender='org.bluez',interface='org.bluez.AudioSource',member='PropertyChanged'",
                 NULL) < 0) {
 
         pa_xfree(speaker);
@@ -4104,6 +4156,7 @@ void pa__done(pa_module *m) {
             pa_dbus_remove_matches(pa_dbus_connection_get(u->connection), speaker, mike,
                 "type='signal',sender='org.bluez',interface='org.bluez.MediaTransport',member='PropertyChanged'",
                 "type='signal',sender='org.bluez',interface='org.bluez.HandsfreeGateway',member='PropertyChanged'",
+                "type='signal',sender='org.bluez',interface='org.bluez.AudioSource',member='PropertyChanged'",
                 NULL);
 
             pa_xfree(speaker);
-- 
1.7.5.4