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_HIGH_PASS_FILTER_IMPL_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_ 13 14 #include "webrtc/base/constructormagic.h" 15 #include "webrtc/base/criticalsection.h" 16 #include "webrtc/base/scoped_ptr.h" 17 #include "webrtc/modules/audio_processing/include/audio_processing.h" 18 19 namespace webrtc { 20 21 class AudioBuffer; 22 23 class HighPassFilterImpl : public HighPassFilter { 24 public: 25 explicit HighPassFilterImpl(rtc::CriticalSection* crit); 26 ~HighPassFilterImpl() override; 27 28 // TODO(peah): Fold into ctor, once public API is removed. 29 void Initialize(size_t channels, int sample_rate_hz); 30 void ProcessCaptureAudio(AudioBuffer* audio); 31 32 // HighPassFilter implementation. 33 int Enable(bool enable) override; 34 bool is_enabled() const override; 35 36 private: 37 class BiquadFilter; 38 rtc::CriticalSection* const crit_ = nullptr; 39 bool enabled_ GUARDED_BY(crit_) = false; 40 std::vector<rtc::scoped_ptr<BiquadFilter>> filters_ GUARDED_BY(crit_); 41 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(HighPassFilterImpl); 42 }; 43 } // namespace webrtc 44 45 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_ 46
