avi_PushSource.h

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//------------------------------------------------------------------------------
// File: PushSource.H
//------------------------------------------------------------------------------
// UNITS = 10 ^ 7  
// UNITS / 30 = 30 fps;
// UNITS / 20 = 20 fps, etc

const REFERENCE_TIME FPS_30 = UNITS / 30;
const REFERENCE_TIME FPS_20 = UNITS / 20;
const REFERENCE_TIME FPS_25 = UNITS / 25;
const REFERENCE_TIME FPS_10 = UNITS / 10;
const REFERENCE_TIME FPS_5  = UNITS / 5;
const REFERENCE_TIME FPS_4  = UNITS / 4;
const REFERENCE_TIME FPS_3  = UNITS / 3;
const REFERENCE_TIME FPS_2  = UNITS / 2;
const REFERENCE_TIME FPS_1  = UNITS / 1;

class CPushPinBitmapSet : public CSourceStream
{
protected:
    BOOL m_bZeroMemory;                 // Do we need to clear the buffer?
    CRefTime m_rtSampleTime;            // The time stamp for each sample

    BITMAPINFO *m_pBmi;                 // Pointer to the bitmap headers
    DWORD m_cbBitmapInfo;               // Size of the bitmap headers
        
    BYTE * m_pFile;                     // Points to beginning of bitmap
        BYTE * m_pImage;                    // Points to pixel bits                                      
    BOOL m_bFilesLoaded;

    int m_iFrameNumber;                 // How many frames have been displayed
    int m_FirstF,m_LastF;               // how many frames to write
    const REFERENCE_TIME m_rtFrameLength;   // Duration of one frame

    CCritSec m_cSharedState;            // Protects our internal state
    CImageDisplay m_Display;            // Figures out our media type for us
public:

    CPushPinBitmapSet(int Nframes, HRESULT *phr, CSource *pFilter);
    ~CPushPinBitmapSet();

    void LoadNextBitmap(void);

    // Override the version that offers exactly one media type
    HRESULT GetMediaType(CMediaType *pMediaType);
    HRESULT DecideBufferSize(IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *pRequest);
    HRESULT FillBuffer(IMediaSample *pSample);
    
    // Quality control
        // Not implemented because we aren't going in real time.
        // If the file-writing filter slows the graph down, we just do nothing, which means
        // wait until we're unblocked. No frames are ever dropped.
    STDMETHODIMP Notify(IBaseFilter *pSelf, Quality q)
    {
        return E_FAIL;
    }

};

class CPushSourceBitmapSet : public CSource
{
public:
    CPushSourceBitmapSet(int Nframes, IUnknown *pUnk, HRESULT *phr);
    ~CPushSourceBitmapSet();

private:
    CPushPinBitmapSet *m_pPin;

public:
//    static CUnknown * WINAPI CreateInstance(IUnknown *pUnk, HRESULT *phr);  

};