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https://github.com/mollyim/webrtc.git
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aa8b67da9d
Changes places where we explicitly construct an Optional to instead use nullopt or the requisite value type only. This CL was uploaded by git cl split. R=henrik.lundin@webrtc.org Bug: None Change-Id: I733a83f702fe11884d229a1713cfac952727bde8 Reviewed-on: https://webrtc-review.googlesource.com/23601 Commit-Queue: Oskar Sundbom <ossu@webrtc.org> Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20786}
49 lines
1.5 KiB
C++
49 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 "modules/audio_processing/echo_detector/circular_buffer.h"
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#include <algorithm>
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#include "rtc_base/checks.h"
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namespace webrtc {
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CircularBuffer::CircularBuffer(size_t size) : buffer_(size) {}
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CircularBuffer::~CircularBuffer() = default;
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void CircularBuffer::Push(float value) {
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buffer_[next_insertion_index_] = value;
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++next_insertion_index_;
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next_insertion_index_ %= buffer_.size();
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RTC_DCHECK_LT(next_insertion_index_, buffer_.size());
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nr_elements_in_buffer_ = std::min(nr_elements_in_buffer_ + 1, buffer_.size());
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RTC_DCHECK_LE(nr_elements_in_buffer_, buffer_.size());
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}
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rtc::Optional<float> CircularBuffer::Pop() {
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if (nr_elements_in_buffer_ == 0) {
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return rtc::nullopt;
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}
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const size_t index =
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(buffer_.size() + next_insertion_index_ - nr_elements_in_buffer_) %
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buffer_.size();
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RTC_DCHECK_LT(index, buffer_.size());
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--nr_elements_in_buffer_;
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return buffer_[index];
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}
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void CircularBuffer::Clear() {
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std::fill(buffer_.begin(), buffer_.end(), 0.f);
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next_insertion_index_ = 0;
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nr_elements_in_buffer_ = 0;
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}
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} // namespace webrtc
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