windows-server-2003/multimedia/dshow/vidctl/mpeg2componenttypeimpl.h

/////////////////////////////////////////////////////////////////////////////////////
// MPEG2ComponentTypeimpl.h : implementation helper template for component type interface
// Copyright (c) Microsoft Corporation 1999.

#ifndef MPEG2COMPONENTTYPEIMPL_H
#define MPEG2COMPONENTTYPEIMPL_H

#include "languagecomponenttypeimpl.h"

namespace BDATuningModel {

template<class T,
         class MostDerived = IMPEG2ComponentType, 
         LPCGUID iid = &__uuidof(MostDerived),
         LPCGUID LibID = &LIBID_TunerLib, 
         WORD wMajor = 1,
         WORD wMinor = 0, 
         class tihclass = CComTypeInfoHolder
        > class ATL_NO_VTABLE IMPEG2ComponentTypeImpl : 
	public ILanguageComponentTypeImpl<T, MostDerived, iid, LibID, wMajor, wMinor, tihclass>
{
// IMPEG2ComponentType
public:
    MPEG2StreamType m_StreamType;

    IMPEG2ComponentTypeImpl() : m_StreamType(BDA_UNITIALIZED_MPEG2STREAMTYPE) {}
    virtual ~IMPEG2ComponentTypeImpl() {}
//    typedef IMPEG2ComponentTypeImpl<T, MostDerived, iid, LibID, wMajor, wMinor, tihclass> thistype;
    typedef ILanguageComponentTypeImpl<T, MostDerived, iid, LibID, wMajor, wMinor, tihclass> basetype;
    BEGIN_PROP_MAP(IMPEG2ComponentTypeImpl)
        CHAIN_PROP_MAP(basetype)
        PROP_DATA_ENTRY("Stream Type", m_StreamType, VT_I4)
    END_PROP_MAP()

    STDMETHOD(get_StreamType)(MPEG2StreamType *pVal)
    {
        try {
            if (!pVal) {
                return E_POINTER;
            }
			ATL_LOCKT();
            *pVal = m_StreamType;
        } catch (...) {
            return E_POINTER;
        }

	    return NOERROR;
    }

    STDMETHOD(put_StreamType)(MPEG2StreamType newVal)
    {
		ATL_LOCKT();
        m_StreamType = newVal;
        MARK_DIRTY(T);

	    return NOERROR;
    }
	STDMETHOD(Clone) (IComponentType **ppCT) {
		try {
			if (!ppCT) {
				return E_POINTER;
			}
			ATL_LOCKT();
			HRESULT hr = basetype::Clone(ppCT);
			if (FAILED(hr)) {
				return hr;
			}
			T* pt = static_cast<T*>(*ppCT);
			pt->m_StreamType = m_StreamType;

			return NOERROR;
		} catch (HRESULT h) {
			return h;
		} catch (...) {
			return E_POINTER;
		}
	}
};

}; // namespace

#endif // MPEG2COMPONENTTYPEIMPL_H
// end of file -- MPEG2componenttypeimpl.h