/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_
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#include "webrtc/base/constructormagic.h"
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/base/scoped_ptr.h"
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#include "webrtc/modules/audio_processing/include/audio_processing.h"
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namespace webrtc {
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class AudioBuffer;
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class HighPassFilterImpl : public HighPassFilter {
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public:
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explicit HighPassFilterImpl(rtc::CriticalSection* crit);
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~HighPassFilterImpl() override;
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// TODO(peah): Fold into ctor, once public API is removed.
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void Initialize(size_t channels, int sample_rate_hz);
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void ProcessCaptureAudio(AudioBuffer* audio);
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// HighPassFilter implementation.
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int Enable(bool enable) override;
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bool is_enabled() const override;
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private:
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class BiquadFilter;
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rtc::CriticalSection* const crit_ = nullptr;
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bool enabled_ GUARDED_BY(crit_) = false;
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std::vector<rtc::scoped_ptr<BiquadFilter>> filters_ GUARDED_BY(crit_);
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(HighPassFilterImpl);
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_
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