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_H 18 #define AAUDIO_SERVICE_ENDPOINT_H 19 20 #include <atomic> 21 #include <functional> 22 #include <mutex> 23 #include <vector> 24 25 #include "client/AudioStreamInternal.h" 26 #include "client/AudioStreamInternalPlay.h" 27 #include "binding/AAudioServiceMessage.h" 28 #include "AAudioServiceStreamShared.h" 29 #include "AAudioServiceStreamMMAP.h" 30 #include "AAudioMixer.h" 31 #include "AAudioService.h" 32 33 namespace aaudio { 34 35 class AAudioServiceEndpoint { 36 public: 37 virtual ~AAudioServiceEndpoint() = default; 38 39 virtual aaudio_result_t open(int32_t deviceId); 40 getSampleRate()41 int32_t getSampleRate() const { return mStreamInternal->getSampleRate(); } getSamplesPerFrame()42 int32_t getSamplesPerFrame() const { return mStreamInternal->getSamplesPerFrame(); } getFramesPerBurst()43 int32_t getFramesPerBurst() const { return mStreamInternal->getFramesPerBurst(); } 44 45 aaudio_result_t registerStream(AAudioServiceStreamShared *sharedStream); 46 aaudio_result_t unregisterStream(AAudioServiceStreamShared *sharedStream); 47 aaudio_result_t startStream(AAudioServiceStreamShared *sharedStream); 48 aaudio_result_t stopStream(AAudioServiceStreamShared *sharedStream); 49 aaudio_result_t close(); 50 getDeviceId()51 int32_t getDeviceId() const { return mStreamInternal->getDeviceId(); } 52 getDirection()53 aaudio_direction_t getDirection() const { return mStreamInternal->getDirection(); } 54 55 void disconnectRegisteredStreams(); 56 57 virtual void *callbackLoop() = 0; 58 59 // This should only be called from the AAudioEndpointManager under a mutex. getReferenceCount()60 int32_t getReferenceCount() const { 61 return mReferenceCount; 62 } 63 64 // This should only be called from the AAudioEndpointManager under a mutex. setReferenceCount(int32_t count)65 void setReferenceCount(int32_t count) { 66 mReferenceCount = count; 67 } 68 69 virtual AudioStreamInternal *getStreamInternal() = 0; 70 71 std::atomic<bool> mCallbackEnabled; 72 73 std::mutex mLockStreams; 74 75 std::vector<AAudioServiceStreamShared *> mRegisteredStreams; 76 std::vector<AAudioServiceStreamShared *> mRunningStreams; 77 78 private: 79 aaudio_result_t startSharingThread_l(); 80 aaudio_result_t stopSharingThread(); 81 82 AudioStreamInternal *mStreamInternal = nullptr; 83 int32_t mReferenceCount = 0; 84 }; 85 86 } /* namespace aaudio */ 87 88 89 #endif //AAUDIO_SERVICE_ENDPOINT_H 90