230 lines
9.7 KiB
C
230 lines
9.7 KiB
C
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//------------------------------------------------------------------------------
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// File: WinCtrl.h
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//
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// Desc: DirectShow base classes - defines classes for video control
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// interfaces.
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//
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//@@BEGIN_MSINTERNAL
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//
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// December 1995
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//
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//@@END_MSINTERNAL
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// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef __WINCTRL__
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#define __WINCTRL__
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#define ABSOL(x) (x < 0 ? -x : x)
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#define NEGAT(x) (x > 0 ? -x : x)
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// Helper
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BOOL WINAPI PossiblyEatMessage(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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class CBaseControlWindow : public CBaseVideoWindow, public CBaseWindow
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{
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protected:
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CBaseFilter *m_pFilter; // Pointer to owning media filter
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CBasePin *m_pPin; // Controls media types for connection
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CCritSec *m_pInterfaceLock; // Externally defined critical section
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COLORREF m_BorderColour; // Current window border colour
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BOOL m_bAutoShow; // What happens when the state changes
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HWND m_hwndOwner; // Owner window that we optionally have
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HWND m_hwndDrain; // HWND to post any messages received
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BOOL m_bCursorHidden; // Should we hide the window cursor
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public:
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// Internal methods for other objects to get information out
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HRESULT DoSetWindowStyle(long Style,long WindowLong);
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HRESULT DoGetWindowStyle(long *pStyle,long WindowLong);
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BOOL IsAutoShowEnabled() { return m_bAutoShow; };
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COLORREF GetBorderColour() { return m_BorderColour; };
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HWND GetOwnerWindow() { return m_hwndOwner; };
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BOOL IsCursorHidden() { return m_bCursorHidden; };
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inline BOOL PossiblyEatMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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return ::PossiblyEatMessage(m_hwndDrain, uMsg, wParam, lParam);
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}
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// Derived classes must call this to set the pin the filter is using
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// We don't have the pin passed in to the constructor (as we do with
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// the CBaseFilter object) because filters typically create the
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// pins dynamically when requested in CBaseFilter::GetPin. This can
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// not be called from our constructor because is is a virtual method
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void SetControlWindowPin(CBasePin *pPin) {
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m_pPin = pPin;
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}
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public:
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CBaseControlWindow(CBaseFilter *pFilter, // Owning media filter
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CCritSec *pInterfaceLock, // Locking object
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TCHAR *pName, // Object description
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LPUNKNOWN pUnk, // Normal COM ownership
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HRESULT *phr); // OLE return code
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// These are the properties we support
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STDMETHODIMP put_Caption(BSTR strCaption);
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STDMETHODIMP get_Caption(BSTR *pstrCaption);
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STDMETHODIMP put_AutoShow(long AutoShow);
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STDMETHODIMP get_AutoShow(long *AutoShow);
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STDMETHODIMP put_WindowStyle(long WindowStyle);
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STDMETHODIMP get_WindowStyle(long *pWindowStyle);
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STDMETHODIMP put_WindowStyleEx(long WindowStyleEx);
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STDMETHODIMP get_WindowStyleEx(long *pWindowStyleEx);
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STDMETHODIMP put_WindowState(long WindowState);
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STDMETHODIMP get_WindowState(long *pWindowState);
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STDMETHODIMP put_BackgroundPalette(long BackgroundPalette);
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STDMETHODIMP get_BackgroundPalette(long *pBackgroundPalette);
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STDMETHODIMP put_Visible(long Visible);
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STDMETHODIMP get_Visible(long *pVisible);
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STDMETHODIMP put_Left(long Left);
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STDMETHODIMP get_Left(long *pLeft);
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STDMETHODIMP put_Width(long Width);
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STDMETHODIMP get_Width(long *pWidth);
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STDMETHODIMP put_Top(long Top);
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STDMETHODIMP get_Top(long *pTop);
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STDMETHODIMP put_Height(long Height);
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STDMETHODIMP get_Height(long *pHeight);
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STDMETHODIMP put_Owner(OAHWND Owner);
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STDMETHODIMP get_Owner(OAHWND *Owner);
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STDMETHODIMP put_MessageDrain(OAHWND Drain);
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STDMETHODIMP get_MessageDrain(OAHWND *Drain);
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STDMETHODIMP get_BorderColor(long *Color);
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STDMETHODIMP put_BorderColor(long Color);
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STDMETHODIMP get_FullScreenMode(long *FullScreenMode);
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STDMETHODIMP put_FullScreenMode(long FullScreenMode);
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// And these are the methods
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STDMETHODIMP SetWindowForeground(long Focus);
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STDMETHODIMP NotifyOwnerMessage(OAHWND hwnd,long uMsg,LONG_PTR wParam,LONG_PTR lParam);
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STDMETHODIMP GetMinIdealImageSize(long *pWidth,long *pHeight);
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STDMETHODIMP GetMaxIdealImageSize(long *pWidth,long *pHeight);
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STDMETHODIMP SetWindowPosition(long Left,long Top,long Width,long Height);
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STDMETHODIMP GetWindowPosition(long *pLeft,long *pTop,long *pWidth,long *pHeight);
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STDMETHODIMP GetRestorePosition(long *pLeft,long *pTop,long *pWidth,long *pHeight);
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STDMETHODIMP HideCursor(long HideCursor);
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STDMETHODIMP IsCursorHidden(long *CursorHidden);
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};
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// This class implements the IBasicVideo interface
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class CBaseControlVideo : public CBaseBasicVideo
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{
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protected:
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CBaseFilter *m_pFilter; // Pointer to owning media filter
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CBasePin *m_pPin; // Controls media types for connection
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CCritSec *m_pInterfaceLock; // Externally defined critical section
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public:
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// Derived classes must provide these for the implementation
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virtual HRESULT IsDefaultTargetRect() PURE;
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virtual HRESULT SetDefaultTargetRect() PURE;
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virtual HRESULT SetTargetRect(RECT *pTargetRect) PURE;
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virtual HRESULT GetTargetRect(RECT *pTargetRect) PURE;
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virtual HRESULT IsDefaultSourceRect() PURE;
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virtual HRESULT SetDefaultSourceRect() PURE;
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virtual HRESULT SetSourceRect(RECT *pSourceRect) PURE;
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virtual HRESULT GetSourceRect(RECT *pSourceRect) PURE;
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virtual HRESULT GetStaticImage(long *pBufferSize,long *pDIBImage) PURE;
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// Derived classes must override this to return a VIDEOINFO representing
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// the video format. We cannot call IPin ConnectionMediaType to get this
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// format because various filters dynamically change the type when using
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// DirectDraw such that the format shows the position of the logical
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// bitmap in a frame buffer surface, so the size might be returned as
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// 1024x768 pixels instead of 320x240 which is the real video dimensions
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virtual VIDEOINFOHEADER *GetVideoFormat() PURE;
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// Helper functions for creating memory renderings of a DIB image
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HRESULT GetImageSize(VIDEOINFOHEADER *pVideoInfo,
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LONG *pBufferSize,
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RECT *pSourceRect);
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HRESULT CopyImage(IMediaSample *pMediaSample,
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VIDEOINFOHEADER *pVideoInfo,
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LONG *pBufferSize,
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BYTE *pVideoImage,
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RECT *pSourceRect);
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// Override this if you want notifying when the rectangles change
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virtual HRESULT OnUpdateRectangles() { return NOERROR; };
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virtual HRESULT OnVideoSizeChange();
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// Derived classes must call this to set the pin the filter is using
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// We don't have the pin passed in to the constructor (as we do with
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// the CBaseFilter object) because filters typically create the
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// pins dynamically when requested in CBaseFilter::GetPin. This can
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// not be called from our constructor because is is a virtual method
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void SetControlVideoPin(CBasePin *pPin) {
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m_pPin = pPin;
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}
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// Helper methods for checking rectangles
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virtual HRESULT CheckSourceRect(RECT *pSourceRect);
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virtual HRESULT CheckTargetRect(RECT *pTargetRect);
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public:
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CBaseControlVideo(CBaseFilter *pFilter, // Owning media filter
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CCritSec *pInterfaceLock, // Serialise interface
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TCHAR *pName, // Object description
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LPUNKNOWN pUnk, // Normal COM ownership
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HRESULT *phr); // OLE return code
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// These are the properties we support
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STDMETHODIMP get_AvgTimePerFrame(REFTIME *pAvgTimePerFrame);
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STDMETHODIMP get_BitRate(long *pBitRate);
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STDMETHODIMP get_BitErrorRate(long *pBitErrorRate);
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STDMETHODIMP get_VideoWidth(long *pVideoWidth);
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STDMETHODIMP get_VideoHeight(long *pVideoHeight);
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STDMETHODIMP put_SourceLeft(long SourceLeft);
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STDMETHODIMP get_SourceLeft(long *pSourceLeft);
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STDMETHODIMP put_SourceWidth(long SourceWidth);
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STDMETHODIMP get_SourceWidth(long *pSourceWidth);
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STDMETHODIMP put_SourceTop(long SourceTop);
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STDMETHODIMP get_SourceTop(long *pSourceTop);
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STDMETHODIMP put_SourceHeight(long SourceHeight);
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STDMETHODIMP get_SourceHeight(long *pSourceHeight);
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STDMETHODIMP put_DestinationLeft(long DestinationLeft);
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STDMETHODIMP get_DestinationLeft(long *pDestinationLeft);
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STDMETHODIMP put_DestinationWidth(long DestinationWidth);
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STDMETHODIMP get_DestinationWidth(long *pDestinationWidth);
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STDMETHODIMP put_DestinationTop(long DestinationTop);
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STDMETHODIMP get_DestinationTop(long *pDestinationTop);
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STDMETHODIMP put_DestinationHeight(long DestinationHeight);
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STDMETHODIMP get_DestinationHeight(long *pDestinationHeight);
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// And these are the methods
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STDMETHODIMP GetVideoSize(long *pWidth,long *pHeight);
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STDMETHODIMP SetSourcePosition(long Left,long Top,long Width,long Height);
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STDMETHODIMP GetSourcePosition(long *pLeft,long *pTop,long *pWidth,long *pHeight);
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STDMETHODIMP GetVideoPaletteEntries(long StartIndex,long Entries,long *pRetrieved,long *pPalette);
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STDMETHODIMP SetDefaultSourcePosition();
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STDMETHODIMP IsUsingDefaultSource();
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STDMETHODIMP SetDestinationPosition(long Left,long Top,long Width,long Height);
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STDMETHODIMP GetDestinationPosition(long *pLeft,long *pTop,long *pWidth,long *pHeight);
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STDMETHODIMP SetDefaultDestinationPosition();
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STDMETHODIMP IsUsingDefaultDestination();
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STDMETHODIMP GetCurrentImage(long *pBufferSize,long *pVideoImage);
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};
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#endif // __WINCTRL__
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