| /* |
| * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef API_AUDIO_CODECS_AUDIO_CODEC_PAIR_ID_H_ |
| #define API_AUDIO_CODECS_AUDIO_CODEC_PAIR_ID_H_ |
| |
| #include <stdint.h> |
| |
| #include <utility> |
| |
| namespace webrtc { |
| |
| class AudioCodecPairId final { |
| public: |
| // Copyable, but not default constructible. |
| AudioCodecPairId() = delete; |
| AudioCodecPairId(const AudioCodecPairId&) = default; |
| AudioCodecPairId(AudioCodecPairId&&) = default; |
| AudioCodecPairId& operator=(const AudioCodecPairId&) = default; |
| AudioCodecPairId& operator=(AudioCodecPairId&&) = default; |
| |
| friend void swap(AudioCodecPairId& a, AudioCodecPairId& b) { |
| using std::swap; |
| swap(a.id_, b.id_); |
| } |
| |
| // Creates a new ID, unequal to any previously created ID. |
| static AudioCodecPairId Create(); |
| |
| // IDs can be tested for equality. |
| friend bool operator==(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ == b.id_; |
| } |
| friend bool operator!=(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ != b.id_; |
| } |
| |
| // Comparisons. The ordering of ID values is completely arbitrary, but |
| // stable, so it's useful e.g. if you want to use IDs as keys in an ordered |
| // map. |
| friend bool operator<(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ < b.id_; |
| } |
| friend bool operator<=(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ <= b.id_; |
| } |
| friend bool operator>=(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ >= b.id_; |
| } |
| friend bool operator>(AudioCodecPairId a, AudioCodecPairId b) { |
| return a.id_ > b.id_; |
| } |
| |
| // Returns a numeric representation of the ID. The numeric values are |
| // completely arbitrary, but stable, collision-free, and reasonably evenly |
| // distributed, so they are e.g. useful as hash values in unordered maps. |
| uint64_t NumericRepresentation() const { return id_; } |
| |
| private: |
| explicit AudioCodecPairId(uint64_t id) : id_(id) {} |
| |
| uint64_t id_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // API_AUDIO_CODECS_AUDIO_CODEC_PAIR_ID_H_ |