/*
* Copyright (C) 2015 Intel Corporation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef basesurfaceallocator_h
#define basesurfaceallocator_h
#include "VideoCommonDefs.h"
namespace YamiMediaCodec{
namespace details {
YamiStatus allocatSurfaces(SurfaceAllocator* thiz, SurfaceAllocParams* params);
YamiStatus freeSurfaces (SurfaceAllocator* thiz, SurfaceAllocParams* params);
void unrefAllocator (SurfaceAllocator* thiz);
};
/// base class for surface allocator.
/// hide details on function hooks
class BaseSurfaceAllocator : public SurfaceAllocator
{
friend YamiStatus details::allocatSurfaces(SurfaceAllocator* thiz, SurfaceAllocParams* params);
friend YamiStatus details::freeSurfaces (SurfaceAllocator* thiz, SurfaceAllocParams* params);
friend void details::unrefAllocator (SurfaceAllocator* thiz);
public:
BaseSurfaceAllocator()
{
//hook function and data
alloc = details::allocatSurfaces;
free = details::freeSurfaces;
unref = details::unrefAllocator;
}
virtual ~BaseSurfaceAllocator() {}
protected:
virtual YamiStatus doAlloc(SurfaceAllocParams* params) = 0;
virtual YamiStatus doFree(SurfaceAllocParams* params) = 0;
virtual void doUnref() = 0;
};
namespace details {
inline YamiStatus allocatSurfaces(SurfaceAllocator* thiz, SurfaceAllocParams* params)
{
if (!thiz || !params)
return YAMI_INVALID_PARAM;
BaseSurfaceAllocator* p = (BaseSurfaceAllocator*)thiz;
return p->doAlloc(params);
}
inline YamiStatus freeSurfaces(SurfaceAllocator* thiz, SurfaceAllocParams* params)
{
if (!thiz || !params)
return YAMI_INVALID_PARAM;
BaseSurfaceAllocator* p = (BaseSurfaceAllocator*)thiz;
return p->doFree(params);
}
inline void unrefAllocator (SurfaceAllocator* thiz)
{
if (!thiz)
return;
BaseSurfaceAllocator* p = (BaseSurfaceAllocator*)thiz;
p->doUnref();
}
} //details
} //YamiMediaCodec
#endif //basesurfaceallocator_h