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audio: fill up last buffer with silence on close

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This commit is contained in:
cinap_lenrek 2011-07-03 06:33:13 +02:00
parent b274842f5c
commit 6888db2820
1 changed files with 15 additions and 0 deletions
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15
sys/src/9/pc/audioac97.c
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@ -326,6 +326,20 @@ ac97write(Audio *adev, void *vp, long n, vlong)
return p - (uchar*)vp; return p - (uchar*)vp;
} }
static void
ac97close(Audio *adev)
{
Ctlr *ctlr;
Ring *ring;
uchar z[1];
z[0] = 0;
ctlr = adev->ctlr;
ring = &ctlr->outring;
while(ring->wi % Blocksize)
ac97write(adev, z, sizeof(z), 0);
}
static Pcidev* static Pcidev*
ac97match(Pcidev *p) ac97match(Pcidev *p)
{ {
@ -499,6 +513,7 @@ Found:
ac97mixreset(adev, ac97mixw, ac97mixr); ac97mixreset(adev, ac97mixw, ac97mixr);
adev->write = ac97write; adev->write = ac97write;
adev->close = ac97close;
adev->buffered = ac97buffered; adev->buffered = ac97buffered;
adev->status = ac97status; adev->status = ac97status;