static int outstream_sample_rate_callback(jack_nframes_t nframes, void *arg) {
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate *)arg;
SoundIoOutStream *outstream = &os->pub;
if (nframes == (jack_nframes_t)outstream->sample_rate) {
return 0;
} else {
outstream->error_callback(outstream, SoundIoErrorStreaming);
return -1;
}
}
static int outstream_buffer_size_callback(jack_nframes_t nframes, void *arg) {
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate *)arg;
SoundIoOutStreamJack *osj = &os->backend_data.jack;
SoundIoOutStream *outstream = &os->pub;
if ((jack_nframes_t)osj->period_size == nframes) {
return 0;
} else {
outstream->error_callback(outstream, SoundIoErrorStreaming);
return -1;
}
}
static void playback_stream_state_callback(pa_stream *stream, void *userdata) {
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate*) userdata;
SoundIoOutStream *outstream = &os->pub;
SoundIo *soundio = outstream->device->soundio;
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
SoundIoOutStreamPulseAudio *ospa = &os->backend_data.pulseaudio;
switch (pa_stream_get_state(stream)) {
case PA_STREAM_UNCONNECTED:
case PA_STREAM_CREATING:
case PA_STREAM_TERMINATED:
break;
case PA_STREAM_READY:
ospa->stream_ready = true;
pa_threaded_mainloop_signal(sipa->main_loop, 0);
break;
case PA_STREAM_FAILED:
outstream->error_callback(outstream, SoundIoErrorStreaming);
break;
}
}
static void outstream_shutdown_callback(void *arg) {
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate *)arg;
SoundIoOutStream *outstream = &os->pub;
outstream->error_callback(outstream, SoundIoErrorStreaming);
}