//======================================================================
// tx_audio_proc.ino
//
// Classes/functions for processing transmit audio.
//======================================================================

#include "tx_audio_proc.h"

SpeechCompressor::SpeechCompressor(AudioEffectCompressor& comp, AudioAmplifier& amp, AudioAnalyzeRMS& rms):
_compress(comp), _amp(amp), _rms(rms)
{
}

//void SpeechCompressor::config(AudioEffectCompressor* comp, AudioAnalyzeRMS* rms)
//{
//  _compress = comp;
//  _rms = rms;
//}

bool SpeechCompressor::isEnabled() const
{
  return _enabled;
}

void SpeechCompressor::enable() 
{
  _enabled = true;
  _compress.begin(1, 0.1, 20); // Need to make configurable
  _amp.gain(2.0);
}

void SpeechCompressor::disable() 
{
  _enabled = false;
  _compress.disable();
  _amp.gain(1.0);
}

// Speech compressor code based on post by 'hyperdyne': https://forum.pjrc.com/threads/36245-Changing-Pitch-of-Voice

void SpeechCompressor::update()
{
  float rms_cur;
  if (_enabled && _rms.available()) {
    rms_cur = _rms.read();
    _env = rms_cur + (_alpha * (_env - rms_cur));
    _compress.update_pwr(_env);
  }
}

//======================================================================
// EOF
//======================================================================