117 lines
2.6 KiB
C++
117 lines
2.6 KiB
C++
/*******************************************************************************
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* Copyright 2009-2024 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 OpenCloseDevice.h
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* @ingroup devices
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* The OpenCloseDevice class.
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*/
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#include <chrono>
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#include <condition_variable>
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#include <thread>
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#include "devices/SoftwareDevice.h"
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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 OpenCloseDevice : public SoftwareDevice
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{
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private:
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/**
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* Whether the device is opened.
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*/
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bool m_device_opened{false};
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/**
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* Whether there is currently playback.
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*/
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bool m_playing{false};
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/**
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* Whether thread released the device.
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*/
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bool m_delayed_close_running{false};
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/**
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* Thread used to release the device after time delay.
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*/
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std::thread m_delayed_close_thread;
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/**
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* Mutex to protect members accessed by multiple threads.
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*/
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std::mutex m_delayed_close_mutex;
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/**
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* Condition to close immediately. Used when object is destructed.
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*/
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std::condition_variable m_immediate_close_condition;
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/**
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* How long to wait until closing the device..
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*/
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std::chrono::milliseconds m_device_close_delay{10000};
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/**
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* Time when playback has stopped.
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*/
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std::chrono::time_point<std::chrono::steady_clock> m_playback_stopped_time;
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/**
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* Releases the device after time delay.
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*/
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void closeAfterDelay();
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/**
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* Starts the playback.
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*/
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AUD_LOCAL virtual void start() = 0;
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/**
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* Stops the playbsck.
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*/
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AUD_LOCAL virtual void stop() = 0;
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/**
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* Acquires the device.
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*/
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AUD_LOCAL virtual void open() = 0;
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/**
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* Releases the device.
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*/
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AUD_LOCAL virtual void close() = 0;
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// delete copy constructor and operator=
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OpenCloseDevice(const OpenCloseDevice&) = delete;
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OpenCloseDevice& operator=(const OpenCloseDevice&) = delete;
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protected:
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OpenCloseDevice() = default;
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void closeNow();
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virtual void playing(bool playing);
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};
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AUD_NAMESPACE_END
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