Method sampleGardner

Tasks/WaveSampler.cpp:177–213

}

bool
WaveSampler::sampleGardner(void)
{
  long amount = static_cast<long>(this->properties.length) - this->p;
  long p = this->p;
  SUCOMPLEX x = 0, prev = this->prevSample;
  SUSDIFF count;

  if (amount > SIGDIGGER_WAVESAMPLER_FEEDER_BLOCK_LENGTH)
    amount = SIGDIGGER_WAVESAMPLER_FEEDER_BLOCK_LENGTH;

  if (this->properties.space == FREQUENCY) {
    // Perform quadrature demodulation directly in here.
    while (amount--) {
      x = this->properties.data[p++];
      su_clock_detector_feed(&this->cd, x * SU_C_CONJ(prev));
      prev = x;
    }

    this->prevSample = prev;
  } else {
    while (amount--)
      su_clock_detector_feed(&this->cd, this->properties.data[p++]);
  }

  count = su_clock_detector_read(
        &this->cd,
        this->set.block,
        SIGDIGGER_WAVESAMPLER_FEEDER_BLOCK_LENGTH);

  this->p = p;
  this->set.len = static_cast<size_t>(count);

  this->progress = this->p / static_cast<qreal>(this->properties.length);

  return this->p < static_cast<long>(this->properties.length);
}

bool
WaveSampler::sampleZeroCrossing(void)