How to stop a device immediately??

[Eric Peters <epeters@graphics.cs.uni-sb.de>]

Dear all,

I have a PCM device which is playing some PCM samples. The soundbuffer
is pretty full. And now I want to pause the buffer immediately (as
fast as possible) and sometime later I want to resume at exactly this
sample I paused.

Now I found the two functions snd_pcm_pause and snd_pcm_resume. But
unfortunately these functions aren't supported by all hardware. Do you
know if modern hardware like different sound blaster cards supports
this functions?

Or do you have an idea how to implement such a feature? I also found
the two functions snd_pcm_drain and snd_pcm_drop. But when I use this
functions the sound buffer will be empty if I resume. And with
snd_pcm_drain there will be a delay between I pause the playback and
there are no more samples out of my spaekers.

Thanks in advance
Eric

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