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