dsutil.h

// // Histogram Sample // This sample shows how to use the Sample Grabber filter for video image p

#pragma once
#ifndef __DSHOW_INCLUDED__
#pragma message(Dshow.h must be included before __FILE__)
#endif

HRESULT AddFilterByCLSID(
    IGraphBuilder *pGraph,  // Pointer to the Filter Graph Manager.
    const GUID& clsid,      // CLSID of the filter to create.
    LPCWSTR wszName,        // A name for the filter.
    IBaseFilter **ppF);      // Receives a pointer to the filter.


HRESULT GetUnconnectedPin(
    IBaseFilter *pFilter,   // Pointer to the filter.
    PIN_DIRECTION PinDir,   // Direction of the pin to find.
    IPin **ppPin);           // Receives a pointer to the pin.


HRESULT ConnectFilters(
    IGraphBuilder *pGraph, // Filter Graph Manager.
    IPin *pOut,            // Output pin on the upstream filter.
    IBaseFilter *pDest);    // Downstream filter.


HRESULT ConnectFilters(
    IGraphBuilder *pGraph, 
    IBaseFilter *pSrc, 
    IBaseFilter *pDest);




HRESULT FindFilterInterface(
    IGraphBuilder *pGraph, // Pointer to the Filter Graph Manager.
    REFGUID iid,           // IID of the interface to retrieve.
    void **ppUnk);         // Receives the interface pointer.


HRESULT FindPinInterface(
    IBaseFilter *pFilter,  // Pointer to the filter to search.
    REFGUID iid,           // IID of the interface.
    void **ppUnk);          // Receives the interface pointer.




HRESULT FindInterfaceAnywhere(
    IGraphBuilder *pGraph, 
    REFGUID iid, 
    void **ppUnk);


HRESULT GetNextFilter(
    IBaseFilter *pFilter, // Pointer to the starting filter
    PIN_DIRECTION Dir,    // Direction to search (upstream or downstream)
    IBaseFilter **ppNext); // Receives a pointer to the next filter.


HRESULT SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath);


HRESULT LoadGraphFile(IGraphBuilder *pGraph, const WCHAR* wszName);



HRESULT CreateKernelFilter(
    const GUID &guidCategory,  // Filter category.
    LPCOLESTR szName,          // The name of the filter.
    IBaseFilter **ppFilter     // Receives a pointer to the filter.
);



HRESULT FindPinByName(IBaseFilter *pFilter, const WCHAR *wszName, IPin **ppPin);


void GetVideoInfoParameters(
    const VIDEOINFOHEADER *pvih, // Pointer to the format header.
    BYTE  * const pbData,        // Pointer to the first address in the buffer.
    DWORD *pdwWidth,         // Returns the width in pixels.
    DWORD *pdwHeight,        // Returns the height in pixels.
    LONG  *plStrideInBytes,  // Add this to a row to get the new row down
    BYTE **ppbTop,           // Returns pointer to the first byte in the top row of pixels.
    bool bYuv                // Is this a YUV format? (true = YUV, false = RGB)
    );