output: semi-asynchronous playback

Send an output buffer to all output plugins at the same time, instead
of waiting for each of them separately.  Make several functions
non-blocking, and introduce the new function audio_output_wait_all()
to synchronize with all audio output threads.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/output_internal.h b/src/output_internal.h
index 5c11a952..2455a549 100644
--- a/src/output_internal.h
+++ b/src/output_internal.h
@@ -109,4 +109,16 @@ struct audio_output {
  */
 extern struct notify audio_output_client_notify;
 
+static inline int
+audio_output_command_is_finished(const struct audio_output *ao)
+{
+	return ao->command == AO_COMMAND_NONE;
+}
+
+static inline int
+audio_output_get_result(const struct audio_output *ao)
+{
+	return ao->result;
+}
+
 #endif