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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_HIGH_PASS_FILTER_IMPL_H_
     12 #define WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_
     13 
     14 #include "webrtc/modules/audio_processing/include/audio_processing.h"
     15 #include "webrtc/modules/audio_processing/processing_component.h"
     16 
     17 namespace webrtc {
     18 
     19 class AudioBuffer;
     20 class CriticalSectionWrapper;
     21 
     22 class HighPassFilterImpl : public HighPassFilter,
     23                            public ProcessingComponent {
     24  public:
     25   HighPassFilterImpl(const AudioProcessing* apm, CriticalSectionWrapper* crit);
     26   virtual ~HighPassFilterImpl();
     27 
     28   int ProcessCaptureAudio(AudioBuffer* audio);
     29 
     30   // HighPassFilter implementation.
     31   virtual bool is_enabled() const OVERRIDE;
     32 
     33  private:
     34   // HighPassFilter implementation.
     35   virtual int Enable(bool enable) OVERRIDE;
     36 
     37   // ProcessingComponent implementation.
     38   virtual void* CreateHandle() const OVERRIDE;
     39   virtual int InitializeHandle(void* handle) const OVERRIDE;
     40   virtual int ConfigureHandle(void* handle) const OVERRIDE;
     41   virtual void DestroyHandle(void* handle) const OVERRIDE;
     42   virtual int num_handles_required() const OVERRIDE;
     43   virtual int GetHandleError(void* handle) const OVERRIDE;
     44 
     45   const AudioProcessing* apm_;
     46   CriticalSectionWrapper* crit_;
     47 };
     48 }  // namespace webrtc
     49 
     50 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_IMPL_H_
     51