/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2019 Olive Team

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#ifndef SUMSAMPLES_H
#define SUMSAMPLES_H

#include <QFloat16>
#include <QVector>

#include "codec/samplebuffer.h"

OLIVE_NAMESPACE_ENTER

class SampleSummer {
public:
  struct Sum {
    Sum();

    qfloat16 min;
    qfloat16 max;
  };

  // FIXME: Move to config
  static const int kSumSampleRate;

  static QVector<Sum> SumSamples(const float* samples, int nb_samples, int nb_channels);
  static QVector<Sum> SumSamples(const qfloat16* samples, int nb_samples, int nb_channels);
  static QVector<Sum> SumSamples(SampleBufferPtr samples, int start_index, int length);

  static QVector<Sum> ReSumSamples(const SampleSummer::Sum* samples, int nb_samples, int nb_channels);

  struct Info {
    Info();

    int channels;
  };

private:
  template <typename T>
  static QVector<Sum> SumSamplesInternal(const T* samples, int nb_samples, int nb_channels);

  template <typename T>
  static void ClampMinMax(Sum &sum, T value);

};

OLIVE_NAMESPACE_EXIT

#endif // SUMSAMPLES_H