output_thread: added command DRAIN

This command manually drains the hardware buffer.  This is useful when
the player thread want to make sure that everything has been played.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/output_control.c b/src/output_control.c
index 842b89030..795d04a8c 100644
--- a/src/output_control.c
+++ b/src/output_control.c
@@ -229,6 +229,15 @@ void audio_output_pause(struct audio_output *ao)
 	g_mutex_unlock(ao->mutex);
 }
 
+void
+audio_output_drain_async(struct audio_output *ao)
+{
+	g_mutex_lock(ao->mutex);
+	if (audio_output_is_open(ao))
+		ao_command_async(ao, AO_COMMAND_DRAIN);
+	g_mutex_unlock(ao->mutex);
+}
+
 void audio_output_cancel(struct audio_output *ao)
 {
 	g_mutex_lock(ao->mutex);