Creating Custom DirectShow SampleGrabber Filter for Windows Mobile

#pragma once
#include <assert.h>
#include <dshow.h>
#include "Resources.h"

#define FILTERNAME L"SampleGrabberFilter"

// Media types
const AMOVIESETUP_MEDIATYPE sudPinTypes [] =
{
    {&MEDIATYPE_Video,&MEDIASUBTYPE_RGB565},
    {&MEDIATYPE_Video,&MEDIASUBTYPE_YUY2},
};

// Pins
const AMOVIESETUP_PIN sudpPins[] =
{
    {
        L"VideoInput",              // Pin string name
        FALSE,                      // Is it rendered
        FALSE,                      // Is it an output
        FALSE,                      // Allowed none
        FALSE,                      // Likewise many
        &CLSID_NULL,                // Connects to filter
        NULL,                       // Connects to pin
        2,                          // Number of types
        sudPinTypes                 // Pin information
    },
    {
        L"VideoOutput",             // Pin string name
        FALSE,                      // Is it rendered
        FALSE,                      // Is it an output
        FALSE,                      // Allowed none
        FALSE,                      // Likewise many
        &CLSID_NULL,                // Connects to filter
        NULL,                       // Connects to pin
        2,                          // Number of types
        sudPinTypes                 // Pin information
    }
};

// Filters
const AMOVIESETUP_FILTER sudSampleGrabber =
{
	&CLSID_SampleGrabber,	    // Filter CLSID
	FILTERNAME,								// String name
	MERIT_NORMAL,							//MERIT_DO_NOT_USE,			// Filter merit
	2,												// Number of pins
	sudpPins									// Pin information
};


// define the filter class
class CSampleGrabber : 
public CTransInPlaceFilter, public ISampleGrabber
{
private:
MANAGEDCALLBACKPROC callback;
long m_Width;
long m_Height;
long m_SampleSize;
long m_Stride;

public:
// instantiation
CSampleGrabber( IUnknown * pOuter, HRESULT * phr, BOOL ModifiesData );
~CSampleGrabber();
static CUnknown *WINAPI CreateInstance(LPUNKNOWN punk, HRESULT *phr);

// IUnknown
DECLARE_IUNKNOWN;
STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void ** ppv);

// CTransInPlaceFilter
HRESULT CheckInputType(const CMediaType *pmt);
HRESULT SetMediaType(PIN_DIRECTION direction, const CMediaType *pmt);
HRESULT Transform(IMediaSample *pMediaSample);
HRESULT DecideBufferSize(IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *pProperties);
HRESULT GetMediaType(int iPosition, CMediaType *pMediaType);
HRESULT CheckTransform(const CMediaType *mtIn, const CMediaType *mtOut) {
	return NOERROR; }

// ISampleGrabber
STDMETHODIMP RegisterCallback(MANAGEDCALLBACKPROC mdelegate);
};