Joerg Mueller
35cf34de6d
Upstream fix from Audaspace with simplified PulseAudio code. Maniphest Tasks: T86851 Differential Revision: https://developer.blender.org/D10840
96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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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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#pragma once
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/**
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* @file ThreadedDevice.h
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* @ingroup plugin
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* The ThreadedDevice class.
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*/
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#include "devices/SoftwareDevice.h"
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#include <thread>
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AUD_NAMESPACE_BEGIN
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/**
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* This device extends the SoftwareDevice with code for running mixing in a separate thread.
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*/
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class AUD_PLUGIN_API ThreadedDevice : public SoftwareDevice
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{
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private:
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/**
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* Whether there is currently playback.
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*/
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bool m_playing;
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/**
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* Whether the current playback should stop.
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*/
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bool m_stop;
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/**
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* The streaming thread.
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*/
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std::thread m_thread;
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/**
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* Starts the streaming thread.
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*/
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AUD_LOCAL void start();
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/**
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* Streaming thread main function.
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*/
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AUD_LOCAL virtual void runMixingThread()=0;
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// delete copy constructor and operator=
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ThreadedDevice(const ThreadedDevice&) = delete;
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ThreadedDevice& operator=(const ThreadedDevice&) = delete;
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protected:
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virtual void playing(bool playing);
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/**
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* Empty default constructor. To setup the device call the function create()
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* and to uninitialize call destroy().
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*/
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ThreadedDevice();
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/**
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* Indicates that the mixing thread should be stopped.
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* \return Whether the mixing thread should be stopping.
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* \warning For thread safety, the device needs to be locked, when this method is called.
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*/
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inline bool shouldStop() { return m_stop; }
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/**
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* This method needs to be called when the mixing thread is stopping.
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* \warning For thread safety, the device needs to be locked, when this method is called.
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*/
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inline void doStop() { m_stop = m_playing = false; }
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/**
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* Stops all playback and notifies the mixing thread to stop.
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* \warning The device has to be unlocked to not run into a deadlock.
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*/
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void stopMixingThread();
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};
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AUD_NAMESPACE_END
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