1 /* 2 * Copyright (c) 2011 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_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_ 13 14 #include "audio_processing.h" 15 #include "processing_component.h" 16 17 namespace webrtc { 18 class AudioProcessingImpl; 19 class AudioBuffer; 20 21 class EchoCancellationImpl : public EchoCancellation, 22 public ProcessingComponent { 23 public: 24 explicit EchoCancellationImpl(const AudioProcessingImpl* apm); 25 virtual ~EchoCancellationImpl(); 26 27 int ProcessRenderAudio(const AudioBuffer* audio); 28 int ProcessCaptureAudio(AudioBuffer* audio); 29 30 // EchoCancellation implementation. 31 virtual bool is_enabled() const; 32 33 // ProcessingComponent implementation. 34 virtual int Initialize(); 35 virtual int get_version(char* version, int version_len_bytes) const; 36 37 private: 38 // EchoCancellation implementation. 39 virtual int Enable(bool enable); 40 virtual int enable_drift_compensation(bool enable); 41 virtual bool is_drift_compensation_enabled() const; 42 virtual int set_device_sample_rate_hz(int rate); 43 virtual int device_sample_rate_hz() const; 44 virtual int set_stream_drift_samples(int drift); 45 virtual int stream_drift_samples() const; 46 virtual int set_suppression_level(SuppressionLevel level); 47 virtual SuppressionLevel suppression_level() const; 48 virtual int enable_metrics(bool enable); 49 virtual bool are_metrics_enabled() const; 50 virtual bool stream_has_echo() const; 51 virtual int GetMetrics(Metrics* metrics); 52 53 // ProcessingComponent implementation. 54 virtual void* CreateHandle() const; 55 virtual int InitializeHandle(void* handle) const; 56 virtual int ConfigureHandle(void* handle) const; 57 virtual int DestroyHandle(void* handle) const; 58 virtual int num_handles_required() const; 59 virtual int GetHandleError(void* handle) const; 60 61 const AudioProcessingImpl* apm_; 62 bool drift_compensation_enabled_; 63 bool metrics_enabled_; 64 SuppressionLevel suppression_level_; 65 int device_sample_rate_hz_; 66 int stream_drift_samples_; 67 bool was_stream_drift_set_; 68 bool stream_has_echo_; 69 }; 70 } // namespace webrtc 71 72 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_ECHO_CANCELLATION_IMPL_H_ 73