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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* 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 _ONI_IMPL_FRAME_HOLDER_H_
#define _ONI_IMPL_FRAME_HOLDER_H_
#include "OniCommon.h"
#include "OniFrameManager.h"
#include "OniCTypes.h"
#include "XnOSCpp.h"
ONI_NAMESPACE_IMPLEMENTATION_BEGIN
class VideoStream;
class FrameHolder
{
public:
// Constructor.
FrameHolder(FrameManager& frameManager) : m_frameManager(frameManager), m_enabled(TRUE) {}
// Destructor.
virtual ~FrameHolder() {}
// Get the next frame belonging to a stream.
virtual OniStatus readFrame(VideoStream* pStream, OniFrame** pFrame) = 0;
// Process a newly received frame.
virtual OniStatus processNewFrame(VideoStream* pStream, OniFrame* pFrame) = 0;
// Peek at next frame.
virtual OniFrame* peekFrame(VideoStream* pStream) = 0;
// Clear all the frame in the holder.
virtual void clear() = 0;
// Set whether stream is enabled.
virtual void setStreamEnabled(VideoStream* /*pStream*/, OniBool /*enabled*/) {}
// Return list of streams which are members of the stream group.
virtual void getStreams(VideoStream** ppStreams, int* pNumStreams) = 0;
// Return number of streams which are members of the stream group.
virtual int getNumStreams() = 0;
// Critical section lock (usually used with peek).
void lock() { m_cs.Lock(); }
// Critical section unlock (usually used with peek).
void unlock() { m_cs.Unlock(); }
// Set whether frame holder is enabled.
void setEnabled(OniBool enabled) { m_enabled = enabled; }
// Data members:
protected:
FrameManager& m_frameManager;
OniBool m_enabled;
private:
xnl::CriticalSection m_cs;
};
ONI_NAMESPACE_IMPLEMENTATION_END
#endif // _ONI_IMPL_FRAME_HOLDER_H_
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