Author: avg
Date: Tue May 3 15:50:22 2011
New Revision: 221388
URL: http://svn.freebsd.org/changeset/base/221388
Log:
SNDCTL_DSP_GETIPTR: set pointer to sndbuf_getfreeptr()
Rationale:
- unlike current behavior this seems to be compliant with OSS
specification:
http://manuals.opensound.com/developer/SNDCTL_DSP_GETIPTR.html
- this seems to meet expectations of some OSS programs compiled for or
ported from Linux, e.g. ALSA OSS plugin
- this doesn't seem to break any programs as far as current testing
shows
Tested by: nox, hselasky
MFC after: 4 days
Modified:
head/sys/dev/sound/pcm/dsp.c
Modified: head/sys/dev/sound/pcm/dsp.c
==============================================================================
--- head/sys/dev/sound/pcm/dsp.c Tue May 3 15:12:01 2011
(r221387)
+++ head/sys/dev/sound/pcm/dsp.c Tue May 3 15:50:22 2011
(r221388)
@@ -1655,7 +1655,7 @@ dsp_ioctl(struct cdev *i_dev, u_long cmd
/* XXX abusive DMA update: chn_rdupdate(rdch);
*/
a->bytes = sndbuf_gettotal(bs);
a->blocks = sndbuf_getblocks(bs) - rdch->blocks;
- a->ptr = sndbuf_getreadyptr(bs);
+ a->ptr = sndbuf_getfreeptr(bs);
rdch->blocks = sndbuf_getblocks(bs);
CHN_UNLOCK(rdch);
} else
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