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6fae6ec2ee
This prepares for being able to inject network congestion controllers. And makes it easier to use the units in other parts of the code. Bug: webrtc:9155 Change-Id: Ib8f9c1c97b06d791a01c3376046933d576ae46f9 Reviewed-on: https://webrtc-review.googlesource.com/70201 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23168}
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018 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 API_UNITS_DATA_SIZE_H_
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#define API_UNITS_DATA_SIZE_H_
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#include <stdint.h>
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#include <cmath>
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#include <limits>
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#include <string>
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace data_size_impl {
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constexpr int64_t kPlusInfinityVal = std::numeric_limits<int64_t>::max();
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} // namespace data_size_impl
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// DataSize is a class represeting a count of bytes.
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class DataSize {
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public:
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DataSize() = delete;
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static DataSize Zero() { return DataSize(0); }
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static DataSize Infinity() {
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return DataSize(data_size_impl::kPlusInfinityVal);
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}
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static DataSize bytes(int64_t bytes) {
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RTC_DCHECK_GE(bytes, 0);
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return DataSize(bytes);
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}
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int64_t bytes() const {
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RTC_DCHECK(IsFinite());
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return bytes_;
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}
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int64_t kilobytes() const { return (bytes() + 500) / 1000; }
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bool IsZero() const { return bytes_ == 0; }
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bool IsInfinite() const { return bytes_ == data_size_impl::kPlusInfinityVal; }
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bool IsFinite() const { return !IsInfinite(); }
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DataSize operator-(const DataSize& other) const {
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return DataSize::bytes(bytes() - other.bytes());
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}
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DataSize operator+(const DataSize& other) const {
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return DataSize::bytes(bytes() + other.bytes());
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}
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DataSize& operator-=(const DataSize& other) {
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bytes_ -= other.bytes();
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return *this;
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}
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DataSize& operator+=(const DataSize& other) {
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bytes_ += other.bytes();
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return *this;
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}
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bool operator==(const DataSize& other) const {
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return bytes_ == other.bytes_;
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}
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bool operator!=(const DataSize& other) const {
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return bytes_ != other.bytes_;
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}
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bool operator<=(const DataSize& other) const {
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return bytes_ <= other.bytes_;
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}
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bool operator>=(const DataSize& other) const {
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return bytes_ >= other.bytes_;
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}
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bool operator>(const DataSize& other) const { return bytes_ > other.bytes_; }
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bool operator<(const DataSize& other) const { return bytes_ < other.bytes_; }
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private:
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explicit DataSize(int64_t bytes) : bytes_(bytes) {}
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int64_t bytes_;
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};
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inline DataSize operator*(const DataSize& size, const double& scalar) {
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return DataSize::bytes(std::round(size.bytes() * scalar));
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}
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inline DataSize operator*(const double& scalar, const DataSize& size) {
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return size * scalar;
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}
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inline DataSize operator*(const DataSize& size, const int64_t& scalar) {
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return DataSize::bytes(size.bytes() * scalar);
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}
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inline DataSize operator*(const int64_t& scalar, const DataSize& size) {
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return size * scalar;
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}
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inline DataSize operator*(const DataSize& size, const int32_t& scalar) {
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return DataSize::bytes(size.bytes() * scalar);
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}
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inline DataSize operator*(const int32_t& scalar, const DataSize& size) {
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return size * scalar;
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}
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inline DataSize operator/(const DataSize& size, const int64_t& scalar) {
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return DataSize::bytes(size.bytes() / scalar);
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}
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std::string ToString(const DataSize& value);
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} // namespace webrtc
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#endif // API_UNITS_DATA_SIZE_H_
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