20 Jul
2010
20 Jul
'10
2:17 p.m.
On 07/20/2010 01:48 PM, Patrick Shirkey wrote:
The problem is how to set a counter that doesn't block the rest of the
app while it is in process.
Outline:
global:
static long int mycounter = 0;
main-thread:
if (need_to pause) mycounter = time_to_pause * sample_rate;
audio-thread:
if (mycounter > 0) { mycounter -= samples_processed_here; }
if (mycounter > 0) mute;
else play;
The 'mycounter' variable does not need to be global. It can be part of
the track struct or class eg. track->mutecounter.
..and eventually you implement it to be sample-accurate (the above is
just an outline).
Cheers!
robin
--
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On 07/20/2010 06:54 PM, Robin Gareus wrote:
Are you really sure? :-p
On 07/20/2010 09:17 AM, Patrick Shirkey wrote:
It just needs to work ;-) On 07/20/2010 09:45 AM, Robin Gareus wrote:
That sounds like it needs to be be quite accurate, or not?
On 07/20/2010 01:06 AM, Louigi Verona wrote:
> Hey guys!
>
> Some time ago I have asked someone to look into Kluppe and add a
> couple of
> features.
> My request was not ignored and Patrick Shirkey was kind enough to
> volunteer
> to try to help.
>
> However, he came upon a difficulty and that is - *how do you set up an
> asynchronous timer in C?*
>
>
It depends what you need that timer for.
The timer is needed to countdown the period between stopping and
restarting the loop. The methods I have tried all halt the playback on a
single frame and the ui also becomes unresponsive while the timer is in
process.
All I would like to do is pass a zero byte to the
audio signal handling
code while the timer is in progress. The rest of the interface should
stay active.
A simple approach might be to just set a counter and have the
audio-process count it down (in audio-samples). Once it reaches zero:
play again.