1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef AUDIO_STREAM_ID_ALLOCATOR_H 17 #define AUDIO_STREAM_ID_ALLOCATOR_H 18 19 #include <cstdint> 20 #include <mutex> 21 22 namespace OHOS { 23 namespace AudioStandard { 24 25 class AudioStreamIdAllocator { 26 public: 27 uint32_t GenerateStreamId(); GetAudioStreamIdAllocator(void)28 static AudioStreamIdAllocator& GetAudioStreamIdAllocator(void) 29 { 30 static AudioStreamIdAllocator audioStreamIdAllocator; 31 return audioStreamIdAllocator; 32 } 33 34 AudioStreamIdAllocator(const AudioStreamIdAllocator&) = delete; 35 AudioStreamIdAllocator& operator=(const AudioStreamIdAllocator&) = delete; 36 37 private: AudioStreamIdAllocator()38 AudioStreamIdAllocator() {}; ~AudioStreamIdAllocator()39 ~AudioStreamIdAllocator() {}; 40 41 std::mutex sessionIdAllocatorMutex_; 42 }; 43 } // namespace AudioStandard 44 } // namespace OHOS 45 #endif // AUDIO_STREAM_ID_ALLOCATOR_H 46