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_ECHO_CANCELLATION_IMPL_H_
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CANCELLATION_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 EchoCancellationImpl : public EchoCancellation,
23                              public ProcessingComponent {
24  public:
25   EchoCancellationImpl(const AudioProcessing* apm,
26                        CriticalSectionWrapper* crit);
27   virtual ~EchoCancellationImpl();
28 
29   int ProcessRenderAudio(const AudioBuffer* audio);
30   int ProcessCaptureAudio(AudioBuffer* audio);
31 
32   // EchoCancellation implementation.
33   bool is_enabled() const override;
34   int stream_drift_samples() const override;
35   SuppressionLevel suppression_level() const override;
36   bool is_drift_compensation_enabled() const override;
37 
38   // ProcessingComponent implementation.
39   int Initialize() override;
40   void SetExtraOptions(const Config& config) override;
41 
42   bool is_delay_agnostic_enabled() const;
43   bool is_extended_filter_enabled() const;
44 
45  private:
46   // EchoCancellation implementation.
47   int Enable(bool enable) override;
48   int enable_drift_compensation(bool enable) override;
49   void set_stream_drift_samples(int drift) override;
50   int set_suppression_level(SuppressionLevel level) override;
51   int enable_metrics(bool enable) override;
52   bool are_metrics_enabled() const override;
53   bool stream_has_echo() const override;
54   int GetMetrics(Metrics* metrics) override;
55   int enable_delay_logging(bool enable) override;
56   bool is_delay_logging_enabled() const override;
57   int GetDelayMetrics(int* median, int* std) override;
58   int GetDelayMetrics(int* median,
59                       int* std,
60                       float* fraction_poor_delays) override;
61   struct AecCore* aec_core() const override;
62 
63   // ProcessingComponent implementation.
64   void* CreateHandle() const override;
65   int InitializeHandle(void* handle) const override;
66   int ConfigureHandle(void* handle) const override;
67   void DestroyHandle(void* handle) const override;
68   int num_handles_required() const override;
69   int GetHandleError(void* handle) const override;
70 
71   const AudioProcessing* apm_;
72   CriticalSectionWrapper* crit_;
73   bool drift_compensation_enabled_;
74   bool metrics_enabled_;
75   SuppressionLevel suppression_level_;
76   int stream_drift_samples_;
77   bool was_stream_drift_set_;
78   bool stream_has_echo_;
79   bool delay_logging_enabled_;
80   bool extended_filter_enabled_;
81   bool delay_agnostic_enabled_;
82 };
83 
84 }  // namespace webrtc
85 
86 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CANCELLATION_IMPL_H_
87