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If there is no data in the mix ring, insert silence.

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This will ensure that the hardware output pointer remains valid.
This commit is contained in:
nat 2017-04-22 10:37:51 +00:00
parent dfb2e3d51f
commit d8e7cbe075
1 changed files with 10 additions and 5 deletions
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15
sys/dev/audio.c
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@ -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>
@ -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 @@ audio_pint(void *v)
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: