static OSStatus InputProc(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList * ioData)
{
UNUSED(ioData);
struct state_ca_capture * s = (struct state_ca_capture *) inRefCon;
OSStatus err =noErr;
err= AudioUnitRender(s->auHALComponentInstance, ioActionFlags, inTimeStamp, inBusNumber, //will be '1' for input data
inNumberFrames, //# of frames requested
s->theBufferList);
if(err == noErr) {
int i;
int len = inNumberFrames * s->audio_packet_size;
for(i = 0; i < s->frame.ch_count; ++i)
mux_channel(s->tmp, s->theBufferList->mBuffers[i].mData, s->frame.bps, len, s->frame.ch_count, i, 1.0);
uint32_t write_bytes = len * s->frame.ch_count;
#ifdef HAVE_SPEEX
if(s->nominal_sample_rate != s->frame.sample_rate) {
int err;
uint32_t in_frames = inNumberFrames;
err = speex_resampler_process_interleaved_int(s->resampler, (spx_int16_t *) s->tmp, &in_frames, (spx_int16_t *) s->resampled, &write_bytes);
//speex_resampler_process_int(resampler, channelID, in, &in_length, out, &out_length);
write_bytes *= s->frame.bps * s->frame.ch_count;
if(err) {
fprintf(stderr, "Resampling data error.\n");
return err;
}
}
#endif
pthread_mutex_lock(&s->lock);
#ifdef HAVE_SPEEX
if(s->nominal_sample_rate != s->frame.sample_rate)
ring_buffer_write(s->buffer, s->resampled, write_bytes);
else
#endif
ring_buffer_write(s->buffer, s->tmp, write_bytes);
s->data_ready = TRUE;
if(s->boss_waiting)
pthread_cond_signal(&s->cv);
pthread_mutex_unlock(&s->lock);
} else {
fprintf(stderr, "[CoreAudio] writing buffer caused error %i.\n", (int) err);
}
return err;
}
static int jack_process_callback(jack_nframes_t nframes, void *arg)
{
struct state_jack_capture *s = (struct state_jack_capture *) arg;
int i;
int channel_size = nframes * sizeof(int32_t);
for (i = 0; i < s->frame.ch_count; ++i) {
jack_default_audio_sample_t *in = jack_port_get_buffer(s->input_ports[i], nframes);
float2int((char *) in, (char *) in, channel_size);
mux_channel(s->tmp, (char *) in, sizeof(int32_t), channel_size, s->frame.ch_count, i);
}
ring_buffer_write(s->data, s->tmp, channel_size * s->frame.ch_count);
return 0;
}
