187 lines
6.5 KiB
C
187 lines
6.5 KiB
C
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// Copyright (c) 1997 - 1998 Microsoft Corporation. All Rights Reserved.
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// ddstrm.h : Declaration of the CDDStream
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#ifndef __DDSTRM_H_
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#define __DDSTRM_H_
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#include "resource.h" // main symbols
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class CDDSample;
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class CDDInternalSample;
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/////////////////////////////////////////////////////////////////////////////
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// CDDStream
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class ATL_NO_VTABLE CDDStream :
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public CComCoClass<CDDStream, &CLSID_AMDirectDrawStream>,
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public CStream,
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public IDirectDrawMediaStream,
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public IDirectDrawMediaSampleAllocator // This interface indicates that our mem
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// allocator supports direct draw surfaces
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// from the media samples.
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{
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friend CDDSample;
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public:
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//
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// METHODS
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//
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CDDStream();
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//
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// IMediaStream
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//
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// HACK HACK - the first 2 are duplicates but it won't link
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// without
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STDMETHODIMP GetMultiMediaStream(
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/* [out] */ IMultiMediaStream **ppMultiMediaStream)
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{
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return CStream::GetMultiMediaStream(ppMultiMediaStream);
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}
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STDMETHODIMP GetInformation(
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/* [optional][out] */ MSPID *pPurposeId,
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/* [optional][out] */ STREAM_TYPE *pType)
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{
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return CStream::GetInformation(pPurposeId, pType);
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}
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STDMETHODIMP SetSameFormat(IMediaStream *pStream, DWORD dwFlags);
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STDMETHODIMP AllocateSample(
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/* [in] */ DWORD dwFlags,
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/* [out] */ IStreamSample **ppSample);
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STDMETHODIMP CreateSharedSample(
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/* [in] */ IStreamSample *pExistingSample,
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/* [in] */ DWORD dwFlags,
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/* [out] */ IStreamSample **ppNewSample);
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STDMETHODIMP SendEndOfStream(DWORD dwFlags)
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{
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return CStream::SendEndOfStream(dwFlags);
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}
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//
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// IAMMediaStream
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//
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STDMETHODIMP Initialize(IUnknown *pSourceObject, DWORD dwFlags, REFMSPID PurposeId, const STREAM_TYPE StreamType);
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//
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// IDirectDrawMediaStream
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//
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STDMETHODIMP GetFormat(
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/* [optional][out] */ DDSURFACEDESC *pDDSDCurrent,
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/* [optional][out] */ IDirectDrawPalette **ppDirectDrawPalette,
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/* [optional][out] */ DDSURFACEDESC *pDDSDDesired,
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/* [optional][out] */ DWORD *pdwFlags);
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STDMETHODIMP SetFormat(
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/* [in] */ const DDSURFACEDESC *lpDDSurfaceDesc,
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/* [optional][in] */ IDirectDrawPalette *pDirectDrawPalette);
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STDMETHODIMP GetDirectDraw( // NOTE == Function also used by IDirectDrawMediaSampleAllocator
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/* [out] */ IDirectDraw **ppDirectDraw);
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STDMETHODIMP SetDirectDraw(
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/* [in] */ IDirectDraw *pDirectDraw);
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STDMETHODIMP CreateSample(
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/* [in] */ IDirectDrawSurface *pSurface,
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/* [optional][in] */ const RECT *pRect,
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/* [in] */ DWORD dwFlags,
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/* [out] */ IDirectDrawStreamSample **ppSample);
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STDMETHODIMP GetTimePerFrame(
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/* [out] */ STREAM_TIME *pFrameTime);
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//
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// IPin
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//
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STDMETHODIMP ReceiveConnection(IPin * pConnector, const AM_MEDIA_TYPE *pmt);
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STDMETHODIMP QueryAccept(const AM_MEDIA_TYPE *pmt);
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//
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// IMemInputPin
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//
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STDMETHODIMP Receive(IMediaSample *pSample);
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STDMETHODIMP NotifyAllocator(IMemAllocator * pAllocator, BOOL bReadOnly);
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//
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// IMemAllocator
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//
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STDMETHODIMP SetProperties(ALLOCATOR_PROPERTIES* pRequest, ALLOCATOR_PROPERTIES* pActual);
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STDMETHODIMP GetProperties(ALLOCATOR_PROPERTIES* pProps);
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STDMETHODIMP GetBuffer(IMediaSample **ppBuffer, REFERENCE_TIME * pStartTime,
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REFERENCE_TIME * pEndTime, DWORD dwFlags);
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STDMETHODIMP Decommit();
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//
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// Special CStream methods
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//
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HRESULT GetMediaType(ULONG Index, AM_MEDIA_TYPE **ppMediaType);
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HRESULT CreateTempSample(CSample **ppSample);
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protected:
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STDMETHODIMP GetFormatInternal(
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DDSURFACEDESC *pDDSDCurrent,
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IDirectDrawPalette **ppDirectDrawPalette,
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DDSURFACEDESC *pDDSDDesired,
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DWORD *pdwFlags);
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HRESULT InitDirectDraw(void);
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void InitSurfaceDesc(LPDDSURFACEDESC);
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HRESULT InternalSetFormat(const DDSURFACEDESC *lpDDSurfaceDesc, IDirectDrawPalette *pPalette, bool bFromPin, bool bQuery = false);
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HRESULT InternalAllocateSample(DWORD dwFlags,
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bool bIsInternalSample,
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IDirectDrawStreamSample **ppDDSample,
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bool bTemp = false);
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HRESULT InternalCreateSample(IDirectDrawSurface *pSurface, const RECT *pRect,
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DWORD dwFlags, bool bIsInternalSample,
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IDirectDrawStreamSample **ppSample,
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bool bTemp = false);
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HRESULT GetMyReadOnlySample(CDDSample *pBuddy, CDDSample **ppSample);
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HRESULT RenegotiateMediaType(const DDSURFACEDESC *lpDDSurfaceDesc, IDirectDrawPalette *pPalette, const AM_MEDIA_TYPE *pmt);
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HRESULT inline CDDStream::AllocDDSampleFromPool(
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const REFERENCE_TIME *rtStart,
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CDDSample **ppDDSample)
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{
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CSample *pSample;
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HRESULT hr = AllocSampleFromPool(rtStart, &pSample);
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*ppDDSample = (CDDSample *)pSample;
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return hr;
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}
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bool CreateInternalSample() const
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{
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return m_bSamplesAreReadOnly &&
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m_StreamType==STREAMTYPE_READ;
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}
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public:
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DECLARE_REGISTRY_RESOURCEID(IDR_STREAM)
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BEGIN_COM_MAP(CDDStream)
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COM_INTERFACE_ENTRY(IDirectDrawMediaStream)
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COM_INTERFACE_ENTRY(IDirectDrawMediaSampleAllocator)
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COM_INTERFACE_ENTRY_CHAIN(CStream)
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END_COM_MAP()
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protected:
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//
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// Member variables
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//
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CComPtr<IDirectDraw> m_pDirectDraw;
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CComPtr<IDirectDrawPalette> m_pDirectDrawPalette;
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DWORD m_dwForcedFormatFlags;
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long m_Height;
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long m_Width;
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DDPIXELFORMAT m_PixelFormat;
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const DDPIXELFORMAT *m_pDefPixelFormat;
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long m_lLastPitch;
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CDDInternalSample *m_pMyReadOnlySample;
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};
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#endif // __DDSTRM_H_
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