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bb547203bf
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
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* Copyright (c) 2016 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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#include "webrtc/modules/audio_processing/level_controller/saturating_gain_estimator.h"
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#include <math.h>
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#include <algorithm>
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#include "webrtc/modules/audio_processing/level_controller/level_controller_constants.h"
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#include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
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namespace webrtc {
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SaturatingGainEstimator::SaturatingGainEstimator() {
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Initialize();
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}
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SaturatingGainEstimator::~SaturatingGainEstimator() {}
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void SaturatingGainEstimator::Initialize() {
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saturating_gain_ = kMaxLcGain;
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saturating_gain_hold_counter_ = 0;
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}
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void SaturatingGainEstimator::Update(float gain, int num_saturations) {
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bool too_many_saturations = (num_saturations > 2);
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if (too_many_saturations) {
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saturating_gain_ = 0.95f * gain;
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saturating_gain_hold_counter_ = 1000;
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} else {
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saturating_gain_hold_counter_ =
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std::max(0, saturating_gain_hold_counter_ - 1);
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if (saturating_gain_hold_counter_ == 0) {
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saturating_gain_ *= 1.001f;
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saturating_gain_ = std::min(kMaxLcGain, saturating_gain_);
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}
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}
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}
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} // namespace webrtc
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