On Wed, 24 Dec 2003, Peter Hunnisett wrote:
> >What's looping sound? You can initiate endless ring buffer looping when
> >you set stop_threshold to boundary (sw_params). I think that this
> >major drawback does not exist.
> >
> >
>
> Thanks for pointing out that sound looping is possible in a r
Hi,
I'm a happy user of software suspend [http://swsusp.sf.net].
Unfortunately, my soundcard (via686b/via82xx) doesn't work after resume
because of missing PM hooks. If I unload/reload the modules everything is
fine, but this is of course not very nice (have to kill all apps accessing
the sound dev
>> We have been unable to find a way to tell ALSA, through
>> snd_pcm_mmap_begin(), where we want to write data when using the mmap
>> api. OSS doesn't have this restriction and this is the only documented
>> way we can see to support sound engines which mix in new sounds using
>> looping buffe
>although i agree that from a pragmatic perspective, it would be good
>to understand how to use ALSA to do this.
>
>however, this model of audio programming is not portable, and has
>gotten people into trouble before, not just under Linux.
>
>making the assumption that direct access at all times to
Hi Justin,
It looks like I solved this problem in the last few days. The issue
appears to driven by how Alsa, or possibly the snd-hdsp driver specifically,
attempts to discover the HDSP 9652, and the fact that my machine is
moderately fast. I think this is a bug, or at least an opportunity to al
Ah. that explains why I have never seen it - I always let my machines
boot up from grub on the full timeout and most of them have pretty slow
bootup processes. It is probably best to retry for 1 minute or so in
module init to allow for very fast boots (after all the pci id has
matched, so only brok
>That kind of argument would just corroborate the TransGaming report that
>ALSA is no good overhead-wise, which is probably not what the ALSA
>developers wish to do here.
i wasn't talking about ALSA. i was talking about audio hardware and
programming models in general. ALSA will allow pretty much
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Justin
> Cormack
> Sent: Monday, December 29, 2003 10:50 AM
> To: Mark Knecht
> Cc: alsa list
> Subject: RE: [Alsa-devel] Why does Alsa sometimes not find the HDSP
> 9652? -SOLVED
>
>
> Ah. that explains
Greetings ALSA comrades:
I would like to right a small jack playback application that
accomplishes the following:
- Accurately determines (via the IA32 TSC register, perhaps) how long it
takes after the interrupt (i.e. the audio device's PCI interrupt
signaling the need for new playback samples)
> On Sat, 8 Nov 2003, Ryan Cassidy wrote:
>
> > > Paul Davis wrote:
**
> > > the ALSA PCM API doesn't have "handlers". it doesn't provide any
kind
> > > of callback mechanism. what it does do is to provide a poll(2)
> > > interface, allowing callback
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