Hello,
is it possible to get a callback after a specified number
of samples (e.g. 4000) are played?
I'd like to refill the buffer then and need the exact
number to synchronize audio and video.
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On Sun, 29 Sep 2002, Wolfgang Hesseler wrote:
> Hello,
> is it possible to get a callback after a specified number
> of samples (e.g. 4000) are played?
> I'd like to refill the buffer then and need the exact
> number to synchronize audio and video.
Look to alsa-lib/test/pcm.c and "async" method.
Paul Davis <[EMAIL PROTECTED]> wrote
> >Hello,
> >is it possible to get a callback after a specified number
> >of samples (e.g. 4000) are played?
> >I'd like to refill the buffer then and need the exact
> >number to synchronize audio and video.
>
> you can get this to a limited extent by setting
I do the following: knowing the sample rate and the current position of the HW
pointer (via snd_pcm_avail_update - why there is no function which would tell
me directly that - the current position in the buffer?) I can calculate when
the required position _will_ happen. So I can just schedule th
On Mon, 30 Sep 2002, tomasz motylewski wrote:
> I do the following: knowing the sample rate and the current position of the HW
> pointer (via snd_pcm_avail_update - why there is no function which would tell
> me directly that - the current position in the buffer?) I can calculate when
> the requi
Paul Davis <[EMAIL PROTECTED]> wrote:
>[ please forward to [EMAIL PROTECTED] thanks. ]
>
> >> however, it won't do what you want, because the resolution is limited
> >> to the interrupt frequency of the audio card, and for just about every
> >> interface out there, this is almost always a p
On Mon, 30 Sep 2002, Jaroslav Kysela wrote:
> > me directly that - the current position in the buffer?) I can calculate when
> > the required position _will_ happen. So I can just schedule the timer or sleep
> > until that time. When it arrives I can check again snd_pcm_avail_update to see
> > w
On Mon, 30 Sep 2002, tomasz motylewski wrote:
> On Mon, 30 Sep 2002, Jaroslav Kysela wrote:
>
> > > me directly that - the current position in the buffer?) I can calculate when
> > > the required position _will_ happen. So I can just schedule the timer or sleep
> > > until that time. When it ar
