5f1a31c565
This CL ensures a smooth transition from the parameters used during the startup phase in the call to the parameters used in the rest of the call. This is achieved by slowly transitioning between the parameter sets via interpolation. Bug: chromium:819240,webrtc:8983 Change-Id: Ifbac4b93fc6ad6efc441f41fb88ef09e8ee3d669 Reviewed-on: https://webrtc-review.googlesource.com/60360 Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22451}
84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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#include <array>
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#include <vector>
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#include "api/audio/echo_canceller3_config.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "modules/audio_processing/aec3/aec_state.h"
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#include "modules/audio_processing/aec3/render_signal_analyzer.h"
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#include "rtc_base/constructormagic.h"
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namespace webrtc {
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class SuppressionGain {
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public:
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SuppressionGain(const EchoCanceller3Config& config,
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Aec3Optimization optimization);
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void GetGain(const std::array<float, kFftLengthBy2Plus1>& nearend,
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const std::array<float, kFftLengthBy2Plus1>& echo,
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const std::array<float, kFftLengthBy2Plus1>& comfort_noise,
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const RenderSignalAnalyzer& render_signal_analyzer,
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const AecState& aec_state,
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const std::vector<std::vector<float>>& render,
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float* high_bands_gain,
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std::array<float, kFftLengthBy2Plus1>* low_band_gain);
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// Toggles the usage of the initial state.
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void SetInitialState(bool state);
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private:
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void LowerBandGain(bool stationary_with_low_power,
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const rtc::Optional<int>& narrow_peak_band,
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const AecState& aec_state,
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const std::array<float, kFftLengthBy2Plus1>& nearend,
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const std::array<float, kFftLengthBy2Plus1>& echo,
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const std::array<float, kFftLengthBy2Plus1>& comfort_noise,
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std::array<float, kFftLengthBy2Plus1>* gain);
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// Limits the gain increase.
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void UpdateGainIncrease(
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bool low_noise_render,
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bool linear_echo_estimate,
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const std::array<float, kFftLengthBy2Plus1>& echo,
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const std::array<float, kFftLengthBy2Plus1>& new_gain);
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class LowNoiseRenderDetector {
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public:
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bool Detect(const std::vector<std::vector<float>>& render);
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private:
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float average_power_ = 32768.f * 32768.f;
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};
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const Aec3Optimization optimization_;
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const EchoCanceller3Config config_;
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const int state_change_duration_blocks_;
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float one_by_state_change_duration_blocks_;
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std::array<float, kFftLengthBy2Plus1> last_gain_;
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std::array<float, kFftLengthBy2Plus1> last_masker_;
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std::array<float, kFftLengthBy2Plus1> gain_increase_;
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std::array<float, kFftLengthBy2Plus1> last_echo_;
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LowNoiseRenderDetector low_render_detector_;
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size_t no_saturation_counter_ = 0;
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bool initial_state_ = true;
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int initial_state_change_counter_ = 0;
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RTC_DISALLOW_COPY_AND_ASSIGN(SuppressionGain);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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