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83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* KMix -- KDE's full featured mini mixer
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*
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*
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* Copyright (c) The KMix Authors
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "ControlPool.h"
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#include <QString>
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#include <QMap>
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shared_ptr<MixDevice> ControlPool::TheEmptyDevice; // = shared_ptr<MixDevice>(ControlPool::TheEmptyDevicePtr);
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ControlPool::ControlPool()
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{
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pool = new QMap<QString, shared_ptr<MixDevice> >();
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}
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ControlPool* ControlPool::_instance = 0;
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ControlPool* ControlPool::instance()
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{
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if ( _instance == 0 )
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ControlPool::_instance = new ControlPool();
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return ControlPool::_instance;
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}
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/**
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* Adds a Control to the pool, and returns it wrapped in QSharedPointer.
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* if the Control was already in the Pool, the existing Control is returned
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*
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* @param key A key, unique over all controls of all cards, e.g. "Master:0@ALSA::Creative_XFI:0"
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* @param mixDevice
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* @return
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*/
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shared_ptr<MixDevice> ControlPool::add(const QString& key, MixDevice* md)
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{
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shared_ptr<MixDevice> controlFromPool(get(key));
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if ( controlFromPool.get() != 0)
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{
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kDebug() << "----ControlPool already cached key=" << key;
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return controlFromPool;
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}
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// else: Add the control to the pool
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kDebug() << "----ControlPool add key=" << key;
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shared_ptr<MixDevice> mdShared(md);
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pool->insert(key, mdShared);
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return mdShared;
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}
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/**
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* Retrieves a Control from the pool as QSharedPointer. If the Control is not
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* in the pool, a QSharedPointer that points to null (0) is returned.
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*
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* @param key
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* @return The Control wrapped in QSharedPointer. If not found, a QSharedPointer that points to null.
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*/
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shared_ptr<MixDevice> ControlPool::get(const QString& key)
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{
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shared_ptr<MixDevice> mixDeviceShared = pool->value(key, TheEmptyDevice);
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return mixDeviceShared;
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}
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