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1 /* | 1 /* |
2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ |
13 | 13 |
14 #include <array> | 14 #include <array> |
15 #include <memory> | 15 #include <memory> |
16 | 16 |
17 #include "webrtc/base/constructormagic.h" | 17 #include "webrtc/base/constructormagic.h" |
18 #include "webrtc/base/optional.h" | 18 #include "webrtc/base/optional.h" |
19 #include "webrtc/modules/audio_processing/aec3/aec3_common.h" | 19 #include "webrtc/modules/audio_processing/aec3/aec3_common.h" |
20 #include "webrtc/modules/audio_processing/aec3/fft_buffer.h" | 20 #include "webrtc/modules/audio_processing/aec3/render_buffer.h" |
21 | 21 |
22 namespace webrtc { | 22 namespace webrtc { |
23 | 23 |
24 // Provides functionality for analyzing the properties of the render signal. | 24 // Provides functionality for analyzing the properties of the render signal. |
25 class RenderSignalAnalyzer { | 25 class RenderSignalAnalyzer { |
26 public: | 26 public: |
27 RenderSignalAnalyzer(); | 27 RenderSignalAnalyzer(); |
28 ~RenderSignalAnalyzer(); | 28 ~RenderSignalAnalyzer(); |
29 | 29 |
30 // Updates the render signal analysis with the most recent render signal. | 30 // Updates the render signal analysis with the most recent render signal. |
31 void Update(const FftBuffer& X_buffer, | 31 void Update(const RenderBuffer& X_buffer, |
32 const rtc::Optional<size_t>& delay_partitions); | 32 const rtc::Optional<size_t>& delay_partitions); |
33 | 33 |
34 // Returns true if the render signal is poorly exciting. | 34 // Returns true if the render signal is poorly exciting. |
35 bool PoorSignalExcitation() const { | 35 bool PoorSignalExcitation() const { |
36 RTC_DCHECK_LT(2, narrow_band_counters_.size()); | 36 RTC_DCHECK_LT(2, narrow_band_counters_.size()); |
37 return std::any_of(narrow_band_counters_.begin(), | 37 return std::any_of(narrow_band_counters_.begin(), |
38 narrow_band_counters_.end(), | 38 narrow_band_counters_.end(), |
39 [](size_t a) { return a > 10; }); | 39 [](size_t a) { return a > 10; }); |
40 } | 40 } |
41 | 41 |
42 // Zeros the array around regions with narrow bands signal characteristics. | 42 // Zeros the array around regions with narrow bands signal characteristics. |
43 void MaskRegionsAroundNarrowBands( | 43 void MaskRegionsAroundNarrowBands( |
44 std::array<float, kFftLengthBy2Plus1>* v) const; | 44 std::array<float, kFftLengthBy2Plus1>* v) const; |
45 | 45 |
46 private: | 46 private: |
47 std::array<size_t, kFftLengthBy2 - 1> narrow_band_counters_; | 47 std::array<size_t, kFftLengthBy2 - 1> narrow_band_counters_; |
48 | 48 |
49 RTC_DISALLOW_COPY_AND_ASSIGN(RenderSignalAnalyzer); | 49 RTC_DISALLOW_COPY_AND_ASSIGN(RenderSignalAnalyzer); |
50 }; | 50 }; |
51 | 51 |
52 } // namespace webrtc | 52 } // namespace webrtc |
53 | 53 |
54 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ | 54 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_SIGNAL_ANALYZER_H_ |
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