modules/audio_mixer/default_output_rate_calculator.h

/*
 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_
#define MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_

#include <vector>

#include "api/array_view.h"
#include "modules/audio_mixer/output_rate_calculator.h"

namespace webrtc {

class DefaultOutputRateCalculator : public OutputRateCalculator {
 public:
  static const int kDefaultFrequency = 48000;

  // Produces the least native rate greater or equal to the preferred
  // sample rates. A native rate is one in
  // AudioProcessing::NativeRate. If `preferred_sample_rates` is
  // empty, returns `kDefaultFrequency`.
  int CalculateOutputRateFromRange(
      rtc::ArrayView<const int> preferred_sample_rates) override;
  ~DefaultOutputRateCalculator() override {}
};

}  // namespace webrtc

#endif  // MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_