/*
* Copyright (c) 2009-2011 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 MEDIA_BUFFER_POOL_H_

#define MEDIA_BUFFER_POOL_H_

#include <media/stagefright/MediaBuffer.h>
#include <utils/Errors.h>
#include <utils/threads.h>

namespace android {

class MediaBuffer;
class MetaData;

class MediaBufferPool : public MediaBufferObserver {
public:
    MediaBufferPool();
    ~MediaBufferPool();

    status_t acquire_buffer(int size, MediaBuffer **buffer);

protected:
    virtual void signalBufferReturned(MediaBuffer *buffer);

private:
    friend class MediaBuffer;

    Mutex mLock;
    int mMaxBufferSize;

    MediaBuffer *mFirstBuffer, *mLastBuffer;

    MediaBufferPool(const MediaBufferPool &);
    MediaBufferPool &operator=(const MediaBufferPool &);
};

}  // namespace android

#endif  // MEDIA_BUFFER_POOL_H_