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