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bearsoft |
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//------------------------------------------------------------------------------
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// File: MPConfig.h
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//
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// Desc:
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//
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// Copyright (c) 1997 - 2000, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef __IMPConfig__
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#define __IMPConfig__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum _AM_ASPECT_RATIO_MODE
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{
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AM_ARMODE_STRETCHED, // don't do any aspect ratio correction
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AM_ARMODE_LETTER_BOX, // letter box the video, paint background color in the excess region
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AM_ARMODE_CROP, // crop the video to the right aspect ratio
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AM_ARMODE_STRETCHED_AS_PRIMARY // follow whatever the primary stream does (in terms of the mode as well as pict-aspect-ratio values)
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} AM_ASPECT_RATIO_MODE;
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DECLARE_INTERFACE_(IMixerPinConfig, IUnknown)
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{
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// this function sets the position of the stream in the display window, assuming
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// that the window coordinates are {0, 0, 10000, 10000}. Thus giving arguments
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// (0, 0, 5000, 5000) will put the stream in the top-left quarter. Any value greater
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// than 10000 is invalid.
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STDMETHOD (SetRelativePosition)(THIS_
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IN DWORD dwLeft,
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IN DWORD dwTop,
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IN DWORD dwRight,
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IN DWORD dwBottom
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) PURE;
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// this function gets the position of the stream in the display window, assuming
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// that the window coordinates are {0, 0, 10000, 10000}. Thus if the values returned
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// are (0, 0, 5000, 5000), then it means that the stream is in the top-left quarter.
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STDMETHOD (GetRelativePosition)(THIS_
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OUT DWORD *pdwLeft,
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OUT DWORD *pdwTop,
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OUT DWORD *pdwRight,
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OUT DWORD *pdwBottom
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) PURE;
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// this function sets the ZOrder of the stream. The ZOrder of 0 is the closest
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// to the eyes of the user, and increasing values imply greater distance.
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STDMETHOD (SetZOrder)(THIS_
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IN DWORD dwZOrder
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) PURE;
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// this function gets the ZOrder of the stream. The ZOrder of 0 is the closest
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// to the eyes of the user, and increasing values imply greater distance.
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STDMETHOD (GetZOrder)(THIS_
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OUT DWORD *pdwZOrder
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) PURE;
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// this function sets the colorkey being used by the stream. Setting this value on the
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// primary stream sets the destination colorkey being used by the overlay surface. Setting
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// this value on the secondary pin makes sense only if the stream is transparent. By default
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// the destination colorkey is used as the colorkey for all transparent (secondary) streams.
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STDMETHOD (SetColorKey)(THIS_
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IN COLORKEY *pColorKey
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) PURE;
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// this function gets the colorkey being used by the stream. Getting this value on the
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// primary stream gets the destination colorkey being used by the overlay surface. Getting
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// this value on the secondary pin returns the colorkey being used by that particular stream.
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// When using this method, you are allowed to pass NULL for either pColorKey or pColor but
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// not both.
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STDMETHOD (GetColorKey)(THIS_
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OUT COLORKEY *pColorKey,
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OUT DWORD *pColor
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) PURE;
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// this function sets the blending parameter which in turn defines, how the secondary stream
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// is going to be blended with the primary stream. A value of 0 makes the secondary stream
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// invisible, a value of 255 makes the primary stream invisible (in that region only ofcourse),
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// and any value inbetween, say x, blends the secondary and primary streams in the ratio x : (255-x).
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// If no value is set, the default is 255.
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// Any value less than 0 or greater than 255 is invalid. Calling this function on the primary
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// stream would result in a return value of E_UNEXPECTED.
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STDMETHOD (SetBlendingParameter)(THIS_
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IN DWORD dwBlendingParameter
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) PURE;
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// this function gets the blending parameter which in turn defines, how the secondary stream
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// is currently being blended with the primary stream.
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STDMETHOD (GetBlendingParameter)(THIS_
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OUT DWORD *pdwBlendingParameter
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) PURE;
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// this function is used to set the Aspect Ratio Correction mode on the pin.
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// If the mode is set to letter box, black color is painted on the excess region
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STDMETHOD (SetAspectRatioMode)(THIS_
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IN AM_ASPECT_RATIO_MODE amAspectRatioMode
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) PURE;
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// this function is used to get the Aspect Ratio Correction mode on the pin.
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STDMETHOD (GetAspectRatioMode)(THIS_
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OUT AM_ASPECT_RATIO_MODE* pamAspectRatioMode
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) PURE;
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// this function sets the stream to be transparent. That means that the stream is not going
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// to occupy the whole of the rectangle (specified by SetRelativePosition), some of the region
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// is going to be transparent i.e. the stream underneath, is going to see through.
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// Calling this function on the primary stream would result in a return value of E_UNEXPECTED.
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STDMETHOD (SetStreamTransparent)(THIS_
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IN BOOL bStreamTransparent
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) PURE;
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// this function is used to tell whether the stream is transparent or not.
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STDMETHOD (GetStreamTransparent)(THIS_
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OUT BOOL *pbStreamTransparent
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) PURE;
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};
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DECLARE_INTERFACE_(IMixerPinConfig2, IMixerPinConfig)
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{
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// this functions sets the color-controls, if the vga chip supports it.
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STDMETHOD (SetOverlaySurfaceColorControls)(THIS_
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IN LPDDCOLORCONTROL pColorControl
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) PURE;
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// this functions gets the color-controls. It also returns the capability of the vga hardware
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// in the dwFlags value of the struct.
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STDMETHOD (GetOverlaySurfaceColorControls)(THIS_
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OUT LPDDCOLORCONTROL pColorControl
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) PURE;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif // #define __IMPConfig__
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