output: added command REOPEN

REOPEN is called when the input audio format changes.  The output
thread may be reconfigure the PCM converter.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/output_thread.c b/src/output_thread.c
index 6f9e9586a..b3c134413 100644
--- a/src/output_thread.c
+++ b/src/output_thread.c
@@ -105,6 +105,26 @@ ao_close(struct audio_output *ao)
 	g_debug("closed plugin=%s name=\"%s\"", ao->plugin->name, ao->name);
 }
 
+static void
+ao_reopen(struct audio_output *ao)
+{
+	if (!ao->config_audio_format) {
+		if (ao->open) {
+			const struct music_pipe *mp = ao->pipe;
+			ao_close(ao);
+			ao->pipe = mp;
+		}
+
+		/* no audio format is configured: copy in->out, let
+		   the output's open() method determine the effective
+		   out_audio_format */
+		ao->out_audio_format = ao->in_audio_format;
+	}
+
+	if (!ao->open)
+		ao_open(ao);
+}
+
 static bool
 ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
 {
@@ -237,6 +257,11 @@ static gpointer audio_output_task(gpointer arg)
 			ao_command_finished(ao);
 			break;
 
+		case AO_COMMAND_REOPEN:
+			ao_reopen(ao);
+			ao_command_finished(ao);
+			break;
+
 		case AO_COMMAND_CLOSE:
 			assert(ao->open);
 			assert(ao->pipe != NULL);