1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_ 12 #define MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_ 13 14 #include <vector> 15 16 #include "modules/audio_mixer/output_rate_calculator.h" 17 18 namespace webrtc { 19 20 class DefaultOutputRateCalculator : public OutputRateCalculator { 21 public: 22 static const int kDefaultFrequency = 48000; 23 24 // Produces the least native rate greater or equal to the preferred 25 // sample rates. A native rate is one in 26 // AudioProcessing::NativeRate. If |preferred_sample_rates| is 27 // empty, returns |kDefaultFrequency|. 28 int CalculateOutputRate( 29 const std::vector<int>& preferred_sample_rates) override; ~DefaultOutputRateCalculator()30 ~DefaultOutputRateCalculator() override {} 31 }; 32 33 } // namespace webrtc 34 35 #endif // MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_ 36