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| 1 /* |
| 2 * Copyright (c) 2012 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 WEBRTC_MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_ |
| 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_ |
| 13 |
| 14 #include <memory> |
| 15 #include <vector> |
| 16 |
| 17 #include "webrtc/base/constructormagic.h" |
| 18 |
| 19 namespace webrtc { |
| 20 |
| 21 class AudioBuffer; |
| 22 |
| 23 class LowCutFilter { |
| 24 public: |
| 25 LowCutFilter(size_t channels, int sample_rate_hz); |
| 26 ~LowCutFilter(); |
| 27 void Process(AudioBuffer* audio); |
| 28 |
| 29 private: |
| 30 class BiquadFilter; |
| 31 std::vector<std::unique_ptr<BiquadFilter>> filters_; |
| 32 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(LowCutFilter); |
| 33 }; |
| 34 } // namespace webrtc |
| 35 |
| 36 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_ |
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