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/*
* Copyright (c) 2018, Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _CM_EXTENSION_CREATOR_H_
#define _CM_EXTENSION_CREATOR_H_
#include "mos_utilities.h"
static const int priorityNum = 4;
template <class T>
class CmExtensionCreator
{
typedef T* (*Creator)();
public:
template <class C>
static bool RegisterClass(int priority = 0)
{
if (priority >= priorityNum)
{
return false;
}
Creator *c = GetCreators();
c[priority] = Create<C>;
return true;
}
static T* CreateClass()
{
Creator *c = GetCreators();
for (int i = priorityNum - 1; i >= 0; i--)
{
if (c[i] != nullptr)
{
return c[i]();
}
}
return nullptr;
}
static T* CreateBaseClass()
{
Creator *c = GetCreators();
if (c[0] != nullptr)
{
return c[0]();
}
return MOS_New(T);
}
private:
static Creator* GetCreators()
{
static Creator m_creators[priorityNum];
return m_creators;
}
template <class C>
static T* Create()
{
return MOS_New(C);
}
};
#endif
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