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/*
* Copyright (C) 2013-2014 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 videopool_h
#define videopool_h
#include "VideoCommonDefs.h"
#include "common/lock.h"
#include <deque>
namespace YamiMediaCodec{
template <class T>
class VideoPool : public EnableSharedFromThis<VideoPool<T> >
{
public:
VideoPool(std::deque<SharedPtr<T> >& buffers)
{
m_holder.swap(buffers);
for (size_t i = 0; i < m_holder.size(); i++) {
m_freed.push_back(m_holder[i].get());
}
}
SharedPtr<T> alloc()
{
SharedPtr<T> ret;
AutoLock _l(m_lock);
if (!m_freed.empty()) {
T* p = m_freed.front();
m_freed.pop_front();
ret.reset(p, Recycler(this->shared_from_this()));
}
return ret;
}
private:
void recycle(T* ptr)
{
AutoLock _l(m_lock);
m_freed.push_back(ptr);
}
class Recycler
{
public:
Recycler(const SharedPtr<VideoPool<T> >& pool)
:m_pool(pool)
{
}
void operator()(T* ptr) const
{
m_pool->recycle(ptr);
}
private:
SharedPtr<VideoPool<T> > m_pool;
};
Lock m_lock;
std::deque<T*> m_freed;
std::deque<SharedPtr<T> > m_holder;
};
};
#endif //videopool_h
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