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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_RESIDUAL_ECHO_ESTIMATOR_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RESIDUAL_ECHO_ESTIMATOR_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RESIDUAL_ECHO_ESTIMATOR_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RESIDUAL_ECHO_ESTIMATOR_H_ |
13 | 13 |
14 #include <algorithm> | 14 #include <algorithm> |
15 #include <array> | 15 #include <array> |
16 #include <vector> | 16 #include <vector> |
17 | 17 |
18 #include "webrtc/base/array_view.h" | 18 #include "webrtc/base/array_view.h" |
19 #include "webrtc/base/constructormagic.h" | 19 #include "webrtc/base/constructormagic.h" |
20 #include "webrtc/modules/audio_processing/aec3/aec3_common.h" | 20 #include "webrtc/modules/audio_processing/aec3/aec3_common.h" |
21 #include "webrtc/modules/audio_processing/aec3/aec_state.h" | 21 #include "webrtc/modules/audio_processing/aec3/aec_state.h" |
22 #include "webrtc/modules/audio_processing/aec3/fft_buffer.h" | 22 #include "webrtc/modules/audio_processing/aec3/render_buffer.h" |
23 | 23 |
24 namespace webrtc { | 24 namespace webrtc { |
25 | 25 |
26 class ResidualEchoEstimator { | 26 class ResidualEchoEstimator { |
27 public: | 27 public: |
28 ResidualEchoEstimator(); | 28 ResidualEchoEstimator(); |
29 ~ResidualEchoEstimator(); | 29 ~ResidualEchoEstimator(); |
30 | 30 |
31 void Estimate(bool using_subtractor_output, | 31 void Estimate(bool using_subtractor_output, |
32 const AecState& aec_state, | 32 const AecState& aec_state, |
33 const FftBuffer& X_buffer, | 33 const RenderBuffer& X_buffer, |
34 const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2, | 34 const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2, |
35 const std::array<float, kFftLengthBy2Plus1>& E2_main, | 35 const std::array<float, kFftLengthBy2Plus1>& E2_main, |
36 const std::array<float, kFftLengthBy2Plus1>& E2_shadow, | 36 const std::array<float, kFftLengthBy2Plus1>& E2_shadow, |
37 const std::array<float, kFftLengthBy2Plus1>& S2_linear, | 37 const std::array<float, kFftLengthBy2Plus1>& S2_linear, |
38 const std::array<float, kFftLengthBy2Plus1>& S2_fallback, | 38 const std::array<float, kFftLengthBy2Plus1>& S2_fallback, |
39 const std::array<float, kFftLengthBy2Plus1>& Y2, | 39 const std::array<float, kFftLengthBy2Plus1>& Y2, |
40 std::array<float, kFftLengthBy2Plus1>* R2); | 40 std::array<float, kFftLengthBy2Plus1>* R2); |
41 | 41 |
42 void HandleEchoPathChange(const EchoPathVariability& echo_path_variability); | 42 void HandleEchoPathChange(const EchoPathVariability& echo_path_variability); |
43 | 43 |
44 private: | 44 private: |
45 std::array<float, kFftLengthBy2Plus1> echo_path_gain_; | 45 std::array<float, kFftLengthBy2Plus1> echo_path_gain_; |
46 size_t blocks_since_last_saturation_ = 1000; | 46 size_t blocks_since_last_saturation_ = 1000; |
47 | 47 |
48 RTC_DISALLOW_COPY_AND_ASSIGN(ResidualEchoEstimator); | 48 RTC_DISALLOW_COPY_AND_ASSIGN(ResidualEchoEstimator); |
49 }; | 49 }; |
50 | 50 |
51 } // namespace webrtc | 51 } // namespace webrtc |
52 | 52 |
53 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RESIDUAL_ECHO_ESTIMATOR_H_ | 53 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RESIDUAL_ECHO_ESTIMATOR_H_ |
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