AAudioServiceEndpoint.h revision c0c70e3c7dd10bc2c0caffcab1f3f5fb406b35fb
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 "binding/AAudioServiceMessage.h" 27#include "AAudioServiceStreamShared.h" 28#include "AAudioServiceStreamMMAP.h" 29#include "AAudioMixer.h" 30#include "AAudioService.h" 31 32namespace aaudio { 33 34class AAudioServiceEndpoint { 35public: 36 explicit AAudioServiceEndpoint(android::AAudioService &audioService); 37 virtual ~AAudioServiceEndpoint(); 38 39 aaudio_result_t open(int32_t deviceId, aaudio_direction_t direction); 40 41 int32_t getSampleRate() const { return mStreamInternal.getSampleRate(); } 42 int32_t getSamplesPerFrame() const { return mStreamInternal.getSamplesPerFrame(); } 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 51 int32_t getDeviceId() const { return mStreamInternal.getDeviceId(); } 52 53 aaudio_direction_t getDirection() const { return mStreamInternal.getDirection(); } 54 55 void disconnectRegisteredStreams(); 56 57 void *callbackLoop(); 58 59private: 60 aaudio_result_t startMixer_l(); 61 aaudio_result_t stopMixer_l(); 62 63 int64_t calculateReasonableTimeout(int32_t framesPerOperation); 64 65 AudioStreamInternal mStreamInternal; 66 AAudioMixer mMixer; 67 AAudioServiceStreamMMAP mStreamMMAP; 68 69 std::atomic<bool> mCallbackEnabled; 70 71 std::mutex mLockStreams; 72 std::vector<AAudioServiceStreamShared *> mRegisteredStreams; 73 std::vector<AAudioServiceStreamShared *> mRunningStreams; 74}; 75 76} /* namespace aaudio */ 77 78 79#endif //AAUDIO_SERVICE_ENDPOINT_H 80