default_output_rate_calculator.h (1220B)
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 "api/array_view.h" 15 #include "modules/audio_mixer/output_rate_calculator.h" 16 17 namespace webrtc { 18 19 class DefaultOutputRateCalculator : public OutputRateCalculator { 20 public: 21 static const int kDefaultFrequency = 48000; 22 23 // Produces the least native rate greater or equal to the preferred 24 // sample rates. A native rate is one in 25 // AudioProcessing::NativeRate. If `preferred_sample_rates` is 26 // empty, returns `kDefaultFrequency`. 27 int CalculateOutputRateFromRange( 28 ArrayView<const int> preferred_sample_rates) override; 29 ~DefaultOutputRateCalculator() override {} 30 }; 31 32 } // namespace webrtc 33 34 #endif // MODULES_AUDIO_MIXER_DEFAULT_OUTPUT_RATE_CALCULATOR_H_