|| ||           || Doxygen's  

---

VideoReader.h

/*
 *  Copyright (c) 2000, University of Amsterdam, The Netherlands.
 *  All rights reserved.
 *
 *  Author(s):
 *  Marc Navarro            (mnavarro@wins.uva.nl)
 */

#include <streams.h>
#include "atlbase.h"

#include "IGetFrame.h"

class VideoReader : public IGetFrameController
{
public:
                                VideoReader(const char *name, int cacheSize = 20);
    virtual                     ~VideoReader();
    int                         isNull();

    int                         getLength();
    BYTE*                       getFrame(int n); //dont call delete on result
    int                         getFrameWidth();
    int                         getFrameHeight();

    //IGetFrameController:
    STDMETHODIMP                NextData(BYTE *data);
    STDMETHODIMP                SetDataSizes(int width, int height,
                                             REFERENCE_TIME timePerFrame);

    //IUnknown:
    STDMETHODIMP                QueryInterface(const IID & riid, void **ppv);
    STDMETHODIMP_(ULONG)        AddRef();
    STDMETHODIMP_(ULONG)        Release();


private:

    HRESULT                     buildGraph(const char* filename);
    HRESULT                     showError(const char* msg, HRESULT hr);
    HRESULT                     init(const char *filename, int cacheSize);

    void                        readFrames(int first);

    CComPtr<IGraphBuilder>      _iBuilder;
    CComPtr<IMediaControl>      _imCtrl;
    CComPtr<IMediaSeeking>      _imSeek;
    CComPtr<IMediaEvent>        _imEvent;

    BYTE**                      _data;
    int                         _dataSize;
    int                         _dataOffset; //number of first frame in _data
    int                         _dataFree;   //first free position in _data
    int                         _usingMediaTime;

    int                         _width;
    int                         _height;
    REFERENCE_TIME              _timePerFrame;
    int                         _length;
    int                         _empty; //initial empty frames

    int                         _testingEnd;
};

---