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/*
* Copyright (c) 2011 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_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_
#define WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_
#include "audio_processing.h"
#include "processing_component.h"
namespace webrtc {
class AudioProcessingImpl;
class AudioBuffer;
class EchoCancellationImpl : public EchoCancellation,
public ProcessingComponent {
public:
explicit EchoCancellationImpl(const AudioProcessingImpl* apm);
virtual ~EchoCancellationImpl();
int ProcessRenderAudio(const AudioBuffer* audio);
int ProcessCaptureAudio(AudioBuffer* audio);
// EchoCancellation implementation.
virtual bool is_enabled() const;
// ProcessingComponent implementation.
virtual int Initialize();
virtual int get_version(char* version, int version_len_bytes) const;
private:
// EchoCancellation implementation.
virtual int Enable(bool enable);
virtual int enable_drift_compensation(bool enable);
virtual bool is_drift_compensation_enabled() const;
virtual int set_device_sample_rate_hz(int rate);
virtual int device_sample_rate_hz() const;
virtual int set_stream_drift_samples(int drift);
virtual int stream_drift_samples() const;
virtual int set_suppression_level(SuppressionLevel level);
virtual SuppressionLevel suppression_level() const;
virtual int enable_metrics(bool enable);
virtual bool are_metrics_enabled() const;
virtual bool stream_has_echo() const;
virtual int GetMetrics(Metrics* metrics);
// ProcessingComponent implementation.
virtual void* CreateHandle() const;
virtual int InitializeHandle(void* handle) const;
virtual int ConfigureHandle(void* handle) const;
virtual int DestroyHandle(void* handle) const;
virtual int num_handles_required() const;
virtual int GetHandleError(void* handle) const;
const AudioProcessingImpl* apm_;
bool drift_compensation_enabled_;
bool metrics_enabled_;
SuppressionLevel suppression_level_;
int device_sample_rate_hz_;
int stream_drift_samples_;
bool was_stream_drift_set_;
bool stream_has_echo_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_
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