mirror of
https://github.com/edo9300/edopro
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77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
////////////////////////////////////////////////////////////
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//
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// SFML - Simple and Fast Multimedia Library
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// Copyright (C) 2007-2019 Laurent Gomila (laurent@sfml-dev.org)
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//
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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//
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include "sfAudio/AlResource.hpp"
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#include "sfAudio/AudioDevice.hpp"
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#include "../../gframe/epro_mutex.h"
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namespace
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{
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// OpenAL resources counter and its mutex
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unsigned int count = 0;
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epro::mutex mutex;
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// The audio device is instantiated on demand rather than at global startup,
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// which solves a lot of weird crashes and errors.
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// It is destroyed when it is no longer needed.
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sf::priv::AudioDevice* globalDevice;
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}
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namespace sf
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{
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////////////////////////////////////////////////////////////
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AlResource::AlResource()
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{
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// Protect from concurrent access
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std::lock_guard<epro::mutex> lock(mutex);
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// If this is the very first resource, trigger the global device initialization
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if (count == 0)
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globalDevice = new priv::AudioDevice;
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// Increment the resources counter
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count++;
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}
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////////////////////////////////////////////////////////////
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AlResource::~AlResource()
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{
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// Protect from concurrent access
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std::lock_guard<epro::mutex> lock(mutex);
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// Decrement the resources counter
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count--;
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// If there's no more resource alive, we can destroy the device
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if (count == 0)
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delete globalDevice;
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}
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} // namespace sf
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