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#include "pa_stream.h"
#include "pa_linux_alsa.h"
PaError ReadStream( PaStream* s,
void *buffer,
unsigned long frames )
{
PaAlsaStream *stream = (PaAlsaStream*)s;
/* TODO: handle failure, xruns */
if( stream->capture_interleaved )
{
snd_pcm_mmap_readi( stream->pcm_capture, buffer, frames );
}
else
{
snd_pcm_mmap_readn( stream->pcm_capture, (void**)buffer, frames );
}
return paNoError;
}
PaError WriteStream( PaStream* s,
void *buffer,
unsigned long frames )
{
PaAlsaStream *stream = (PaAlsaStream*)s;
if( stream->playback_interleaved )
{
snd_pcm_mmap_writei( stream->pcm_playback, buffer, frames );
}
else
{
snd_pcm_mmap_writen( stream->pcm_playback, (void**)buffer, frames );
}
return paNoError;
}
unsigned long GetStreamReadAvailable( PaStream* s )
{
PaAlsaStream *stream = (PaAlsaStream*)s;
return snd_pcm_avail_update( stream->pcm_capture );
}
unsigned long GetStreamWriteAvailable( PaStream* s )
{
PaAlsaStream *stream = (PaAlsaStream*)s;
return snd_pcm_avail_update( stream->pcm_playback );
}
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