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85 lines
1.9 KiB
85 lines
1.9 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef AAUDIO_THREAD_H
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#define AAUDIO_THREAD_H
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#include <atomic>
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#include <pthread.h>
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#include <aaudio/AAudio.h>
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namespace aaudio {
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/**
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* Abstract class similar to Java Runnable.
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*/
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class Runnable {
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public:
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Runnable() {};
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virtual ~Runnable() = default;
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virtual void run() = 0;
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};
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/**
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* Abstraction for a host dependent thread.
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* TODO Consider using Android "Thread" class or std::thread instead.
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*/
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class AAudioThread
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{
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public:
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AAudioThread();
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explicit AAudioThread(const char *prefix);
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virtual ~AAudioThread();
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/**
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* Start the thread running.
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*/
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aaudio_result_t start(Runnable *runnable = nullptr);
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/**
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* Join the thread.
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* The caller must somehow tell the thread to exit before calling join().
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*/
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aaudio_result_t stop();
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/**
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* This will get called in the thread.
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* Override this or pass a Runnable to start().
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*/
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virtual void run() {};
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void dispatch(); // called internally from 'C' thread wrapper
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private:
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void setup(const char *prefix);
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Runnable *mRunnable = nullptr;
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bool mHasThread = false;
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pthread_t mThread = {};
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static std::atomic<uint32_t> mNextThreadIndex;
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char mName[16]; // max length for a pthread_name
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};
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} /* namespace aaudio */
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#endif ///AAUDIO_THREAD_H
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