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[src/trunk]: src/sys/dev If there is no data in the mix ring, insert silence.
details: https://anonhg.NetBSD.org/src/rev/cf45f79b5eca
branches: trunk
changeset: 353163:cf45f79b5eca
user: nat <nat%NetBSD.org@localhost>
date: Sat Apr 22 10:37:51 2017 +0000
description:
If there is no data in the mix ring, insert silence.
This will ensure that the hardware output pointer remains valid.
diffstat:
sys/dev/audio.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
diffs (39 lines):
diff -r 1607b35a1e36 -r cf45f79b5eca sys/dev/audio.c
--- a/sys/dev/audio.c Sat Apr 22 07:48:33 2017 +0000
+++ b/sys/dev/audio.c Sat Apr 22 10:37:51 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: audio.c,v 1.326 2017/04/17 22:40:06 nat Exp $ */
+/* $NetBSD: audio.c,v 1.327 2017/04/22 10:37:51 nat Exp $ */
/*-
* Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.326 2017/04/17 22:40:06 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.327 2017/04/22 10:37:51 nat Exp $");
#include "audio.h"
#if NAUDIO > 0
@@ -3598,12 +3598,17 @@
cv_broadcast(&sc->sc_wchan);
}
- if (audio_stream_get_used(&sc->sc_pr.s) < blksize)
- goto wake_mix;
-
vc->sc_mpr.s.outp = audio_stream_add_outp(&vc->sc_mpr.s,
vc->sc_mpr.s.outp, blksize);
+ if (audio_stream_get_used(&sc->sc_pr.s) < blksize) {
+ audio_fill_silence(&vc->sc_pparams, vc->sc_mpr.s.inp,
+ vc->sc_mpr.blksize);
+ vc->sc_mpr.s.inp = audio_stream_add_inp(&vc->sc_mpr.s,
+ vc->sc_mpr.s.inp, blksize);
+ goto wake_mix;
+ }
+
mix_write(sc);
wake_mix:
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