Date: Tue, 26 Apr 2011 20:32:52 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: multimedia@FreeBSD.org Cc: Juergen Lock <nox@jelal.kn-bremen.de> Subject: Re: SNDCTL_DSP_GETIPTR implementation Message-ID: <4DB701C4.30802@FreeBSD.org> In-Reply-To: <4DB6F7BA.4070808@FreeBSD.org> References: <4DB6F7BA.4070808@FreeBSD.org>
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on 26/04/2011 19:50 Andriy Gapon said the following: > > Guys, > > I reading this http://manuals.opensound.com/developer/SNDCTL_DSP_GETOPTR.html > It says: "In mmap mode (only) the ptr field tells the location where the next > sample will be recorded." > In my opinion that means that we have a mistake in our code and the following > patch should be applied. But I am not sufficiently familiar with this code. It seems that with this change linux alsa lib with oss plugin works for audio recording now. E.g. in skype. Hope I wasn't sloppy with my testing again, so I will re-test. Juergen, will you be able to test this too? > --- a/sys/dev/sound/pcm/dsp.c > +++ b/sys/dev/sound/pcm/dsp.c > @@ -1655,7 +1655,7 @@ dsp_ioctl > /* 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 > > P.S. leading (indenting) whitespace in this file is a mess. -- Andriy Gapon
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