diff options
| author | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2006-01-01 22:13:53 +0000 |
|---|---|---|
| committer | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2006-01-01 22:13:53 +0000 |
| commit | b1c739b187c45dc6ffb3c3ace90a11b0596d23bd (patch) | |
| tree | 0edbfa98c41625cc05016177d1361ae4bc69ea3c /sys/dev/usb | |
| parent | ce5ac907441b34c7c5d7129cd161f5b79f2d77ca (diff) | |
Fix mixer wraparound. from netbsd pr 16652.
Diffstat (limited to 'sys/dev/usb')
| -rw-r--r-- | sys/dev/usb/uaudio.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/dev/usb/uaudio.c b/sys/dev/usb/uaudio.c index d99470935ec..3f0d1c22698 100644 --- a/sys/dev/usb/uaudio.c +++ b/sys/dev/usb/uaudio.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uaudio.c,v 1.23 2005/11/21 18:16:43 millert Exp $ */ +/* $OpenBSD: uaudio.c,v 1.24 2006/01/01 22:13:52 fgsch Exp $ */ /* $NetBSD: uaudio.c,v 1.67 2003/05/03 18:11:41 wiz Exp $ */ /* @@ -608,7 +608,7 @@ uaudio_mixer_add_ctl(struct uaudio_softc *sc, struct mixerctl *mc) mc->wValue[0], mc->wIndex, MIX_SIZE(mc->type)); if (res > 0) - mc->delta = (res * 256 + mc->mul/2) / mc->mul; + mc->delta = (res * 255 + mc->mul/2) / mc->mul; } else { mc->minval = 0; mc->maxval = 1; @@ -1709,7 +1709,7 @@ uaudio_value2bsd(struct mixerctl *mc, int val) if (mc->type == MIX_ON_OFF) val = (val != 0); else - val = ((uaudio_signext(mc->type, val) - mc->minval) * 256 + val = ((uaudio_signext(mc->type, val) - mc->minval) * 255 + mc->mul/2) / mc->mul; DPRINTFN(5, ("val'=%d\n", val)); return (val); @@ -1723,7 +1723,7 @@ uaudio_bsd2value(struct mixerctl *mc, int val) if (mc->type == MIX_ON_OFF) val = (val != 0); else - val = (val + mc->delta/2) * mc->mul / 256 + mc->minval; + val = (val + mc->delta/2) * mc->mul / 255 + mc->minval; DPRINTFN(5, ("val'=%d\n", val)); return (val); } |