render.cpp

Go to the documentation of this file.

 
#include <Bela.h>
#include <cmath>
#include <iostream>
#include "config.h"
#include "conndetect.h"
 
using std::cerr;
using std::endl;
#define NCHANNELS_INPUT_ANALOG 4
#define NCHANNELS_INPUT_AUDIO 2
 
bool setup(BelaContext *context, void *ConnDetect_ptr)
{
 
 
  ConnDetect* pud = nullptr;
  try {
    pud = new ConnDetect(context);
  } catch(std::runtime_error& e) {
    cerr << "Error initializing connection detection: " << e.what() << endl;
    cerr << "Aborting..." << endl;
    return false;
  }
 
  if(NCHANNELS_INPUT_ANALOG != context->analogInChannels) {
    cerr << "Unexpected number of analog in channels. Given: " 
      << context->analogInChannels << ". But required: " 
      << NCHANNELS_INPUT_ANALOG <<  endl;
    return false;
  }
 
  Bela_setUserData(static_cast<void*>(pud));
 
  // Sanity checks for sensors etc.
  if(context->audioSampleRate != SAMPLING_FREQUENCY) {
    cerr << "Invalid sampling frequency, should be " << SAMPLING_FREQUENCY << endl;
    return false;
  }
 
 
  return true;
}
 
// render() is called repeatedly by Bela for each audio block
void render(BelaContext *context, void *ConnDetect_opaque)
{
 
  ConnDetect& ud = *static_cast<ConnDetect*>(ConnDetect_opaque);
 
  // Loop over frames
  /* for(us n=0; n <context->analogFrames; n++) { */
 
  /*   const float* mic_samples = &(context->analogIn[NCHANNELS_INPUT_ANALOG*n]); */
  /*   const float* acc_samples = &(mic_samples[2]); */
 
  /*   ud.addSamples(mic_samples, acc_samples); */
 
  /* } */
  // We use channel 0,1,2,3 from the audio expander set, which map to channel
  // 2,3,4,5 of the audio frames
  for(us n=0; n <context->analogFrames; n++) {
 
    const float* mic_samples = &(context->analogIn[NCHANNELS_INPUT_ANALOG*n + 0]);
    const float* acc_samples = &(mic_samples[2]);
    ud.addSamples(context, mic_samples, acc_samples);
 
  }
 
}
 
// cleanup() runs once at the end of the program
void cleanup(BelaContext *context, void *ConnDetect_ptr)
{
 
  // Cleanup ConnDetect
  ConnDetect* ud = static_cast<ConnDetect*>(ConnDetect_ptr);
  delete ud;
}