static void recording_stream_read_callback(pa_stream *stream, size_t nbytes, void *userdata) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate*)userdata;
SoundIoInStream *instream = &is->pub;
assert(nbytes % instream->bytes_per_frame == 0);
assert(nbytes > 0);
int available_frame_count = nbytes / instream->bytes_per_frame;
instream->read_callback(instream, 0, available_frame_count);
}
static int instream_sample_rate_callback(jack_nframes_t nframes, void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStream *instream = &is->pub;
if (nframes == (jack_nframes_t)instream->sample_rate) {
return 0;
} else {
instream->error_callback(instream, SoundIoErrorStreaming);
return -1;
}
}
static int instream_buffer_size_callback(jack_nframes_t nframes, void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStreamJack *isj = &is->backend_data.jack;
SoundIoInStream *instream = &is->pub;
if ((jack_nframes_t)isj->period_size == nframes) {
return 0;
} else {
instream->error_callback(instream, SoundIoErrorStreaming);
return -1;
}
}
static int instream_process_callback(jack_nframes_t nframes, void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStream *instream = &is->pub;
SoundIoInStreamJack *isj = &is->backend_data.jack;
isj->frames_left = nframes;
for (int ch = 0; ch < instream->layout.channel_count; ch += 1) {
SoundIoInStreamJackPort *isjp = &isj->ports[ch];
isj->areas[ch].ptr = (char*)jack_port_get_buffer(isjp->dest_port, nframes);
isj->areas[ch].step = instream->bytes_per_sample;
}
instream->read_callback(instream, isj->frames_left, isj->frames_left);
return 0;
}
static void recording_stream_state_callback(pa_stream *stream, void *userdata) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate*)userdata;
SoundIoInStreamPulseAudio *ispa = &is->backend_data.pulseaudio;
SoundIoInStream *instream = &is->pub;
SoundIo *soundio = instream->device->soundio;
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
SoundIoPulseAudio *sipa = &si->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:
ispa->stream_ready = true;
pa_threaded_mainloop_signal(sipa->main_loop, 0);
break;
case PA_STREAM_FAILED:
instream->error_callback(instream, SoundIoErrorStreaming);
break;
}
}
static void instream_shutdown_callback(void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStream *instream = &is->pub;
instream->error_callback(instream, SoundIoErrorStreaming);
}
static int instream_xrun_callback(void *arg) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)arg;
SoundIoInStream *instream = &is->pub;
instream->overflow_callback(instream);
return 0;
}