3e70781361
This is a follow-up to https://webrtc-review.googlesource.com/c/src/+/106280. This time the whole code base is covered. Some files may have not been fixed though, whenever the IWYU tool was breaking the build. Bug: webrtc:8311 Change-Id: I2c31f552a87e887d33931d46e87b6208b1e483ef Reviewed-on: https://webrtc-review.googlesource.com/c/111965 Commit-Queue: Yves Gerey <yvesg@google.com> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25830}
63 lines
1.7 KiB
C++
63 lines
1.7 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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#include "modules/audio_mixer/gain_change_calculator.h"
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#include <math.h>
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#include <cstdlib>
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#include <vector>
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace {
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constexpr int16_t kReliabilityThreshold = 100;
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} // namespace
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float GainChangeCalculator::CalculateGainChange(
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rtc::ArrayView<const int16_t> in,
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rtc::ArrayView<const int16_t> out) {
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RTC_DCHECK_EQ(in.size(), out.size());
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std::vector<float> gain(in.size());
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CalculateGain(in, out, gain);
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return CalculateDifferences(gain);
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}
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float GainChangeCalculator::LatestGain() const {
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return last_reliable_gain_;
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}
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void GainChangeCalculator::CalculateGain(rtc::ArrayView<const int16_t> in,
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rtc::ArrayView<const int16_t> out,
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rtc::ArrayView<float> gain) {
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RTC_DCHECK_EQ(in.size(), out.size());
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RTC_DCHECK_EQ(in.size(), gain.size());
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for (size_t i = 0; i < in.size(); ++i) {
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if (std::abs(in[i]) >= kReliabilityThreshold) {
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last_reliable_gain_ = out[i] / static_cast<float>(in[i]);
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}
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gain[i] = last_reliable_gain_;
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}
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}
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float GainChangeCalculator::CalculateDifferences(
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rtc::ArrayView<const float> values) {
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float res = 0;
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for (float f : values) {
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res += fabs(f - last_value_);
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last_value_ = f;
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}
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return res;
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}
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} // namespace webrtc
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