Hi,
I seem to be bumping into an issue when trying to play some audio on the
pulse plugin. After opening the pulse device using snd_pcm_open(), I'm
trying to:
const float * data;
long length;
// ...
snd_pcm_sframes_t available = snd_pcm_avail(_handle);
long written = snd_pcm_writei(_handle, inData,
length < available ? length : available);
now, what happens is that available returns an huge number, something
like 2097151 initially - which is 47 seconds of audio in 44.1kHz mono.
so I always end up sending the whole available data, which is say 5
seconds worth of audio. snd_pcm_writei() will always return the total
sample size as a return value, but actually nothing is played, just a
small 'blip' is to be heard. (and the same happens both in non-blocking
and blocking mode)
now, if I force the write length to be small, say 4440, then actually
snd_pcm_writei() will play the audio. but this is some arbitrary value...
so my question is: how to determine the most suitable & biggest buffer
length parameter for snd_pcm_writei()?
Akos
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