output/jack: drain the ring buffers during pause

If we're not doing this, and a new song is played after pause ends, then you will hear the rest of the previous song.

output/jack: drain the ring buffers during pause
762565e9 · Max Kellermann · 41a4662c · 762565e9
Commit 762565e9 authored Mar 10, 2010 by Max Kellermann
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jack_output_plugin.c src/output/jack_output_plugin.c +7 -0

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--- a/src/output/jack_output_plugin.c
+++ b/src/output/jack_output_plugin.c
@@ -118,6 +118,13 @@ mpd_jack_process(jack_nframes_t nframes, void *arg)
 		return 0;

 	if (jd->pause) {
+		/* empty the ring buffers */
+
+		const jack_nframes_t available = mpd_jack_available(jd);
+		for (unsigned i = 0; i < jd->audio_format.channels; ++i)
+			jack_ringbuffer_read_advance(jd->ringbuffer[i],
+						     available * sample_size);
+
 		/* generate silence while MPD is paused */

 		for (unsigned i = 0; i < jd->audio_format.channels; ++i) {