1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef AAUDIO_SERVICE_ENDPOINT_SHARED_H 18 #define AAUDIO_SERVICE_ENDPOINT_SHARED_H 19 20 #include <atomic> 21 #include <mutex> 22 23 #include "AAudioServiceEndpoint.h" 24 #include "client/AudioStreamInternal.h" 25 #include "client/AudioStreamInternalPlay.h" 26 #include "AAudioServiceStreamShared.h" 27 #include "AAudioServiceStreamMMAP.h" 28 #include "AAudioService.h" 29 30 namespace aaudio { 31 32 /** 33 * This manages an AudioStreamInternal that is shared by multiple Client streams. 34 */ 35 class AAudioServiceEndpointShared : public AAudioServiceEndpoint { 36 37 public: 38 explicit AAudioServiceEndpointShared(AudioStreamInternal *streamInternal); 39 40 std::string dump() const override; 41 42 aaudio_result_t open(const aaudio::AAudioStreamRequest &request) override; 43 44 void close() override; 45 46 aaudio_result_t startStream(android::sp<AAudioServiceStreamBase> stream, 47 audio_port_handle_t *clientHandle) override; 48 49 aaudio_result_t stopStream(android::sp<AAudioServiceStreamBase> stream, 50 audio_port_handle_t clientHandle) override; 51 52 aaudio_result_t getFreeRunningPosition(int64_t *positionFrames, int64_t *timeNanos) override; 53 54 aaudio_result_t getTimestamp(int64_t *positionFrames, int64_t *timeNanos) override; 55 56 virtual void *callbackLoop() = 0; 57 58 protected: 59 getStreamInternal()60 AudioStreamInternal *getStreamInternal() const { 61 return mStreamInternal.get(); 62 }; 63 64 aaudio_result_t startSharingThread_l(); 65 66 aaudio_result_t stopSharingThread(); 67 68 // An MMAP stream that is shared by multiple clients. 69 android::sp<AudioStreamInternal> mStreamInternal; 70 71 std::atomic<bool> mCallbackEnabled{false}; 72 73 std::atomic<int> mRunningStreamCount{0}; 74 }; 75 76 } 77 78 #endif //AAUDIO_SERVICE_ENDPOINT_SHARED_H 79