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//------------------------------------------------------------------------------
// File: MPConfig.h
//
// Desc:
//
// Copyright (c) 1997-2001, Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
#ifndef __IMPConfig__
#define __IMPConfig__
#ifdef __cplusplus
extern "C" { #endif
typedef enum _AM_ASPECT_RATIO_MODE { AM_ARMODE_STRETCHED, // don't do any aspect ratio correction
AM_ARMODE_LETTER_BOX, // letter box the video, paint background color in the excess region
AM_ARMODE_CROP, // crop the video to the right aspect ratio
AM_ARMODE_STRETCHED_AS_PRIMARY // follow whatever the primary stream does (in terms of the mode as well as pict-aspect-ratio values)
} AM_ASPECT_RATIO_MODE;
DECLARE_INTERFACE_(IMixerPinConfig, IUnknown) { // this function sets the position of the stream in the display window, assuming
// that the window coordinates are {0, 0, 10000, 10000}. Thus giving arguments
// (0, 0, 5000, 5000) will put the stream in the top-left quarter. Any value greater
// than 10000 is invalid.
STDMETHOD (SetRelativePosition)(THIS_ IN DWORD dwLeft, IN DWORD dwTop, IN DWORD dwRight, IN DWORD dwBottom ) PURE;
// this function gets the position of the stream in the display window, assuming
// that the window coordinates are {0, 0, 10000, 10000}. Thus if the values returned
// are (0, 0, 5000, 5000), then it means that the stream is in the top-left quarter.
STDMETHOD (GetRelativePosition)(THIS_ OUT DWORD *pdwLeft, OUT DWORD *pdwTop, OUT DWORD *pdwRight, OUT DWORD *pdwBottom ) PURE;
// this function sets the ZOrder of the stream. The ZOrder of 0 is the closest
// to the eyes of the user, and increasing values imply greater distance.
STDMETHOD (SetZOrder)(THIS_ IN DWORD dwZOrder ) PURE;
// this function gets the ZOrder of the stream. The ZOrder of 0 is the closest
// to the eyes of the user, and increasing values imply greater distance.
STDMETHOD (GetZOrder)(THIS_ OUT DWORD *pdwZOrder ) PURE;
// this function sets the colorkey being used by the stream. Setting this value on the
// primary stream sets the destination colorkey being used by the overlay surface. Setting
// this value on the secondary pin makes sense only if the stream is transparent. By default
// the destination colorkey is used as the colorkey for all transparent (secondary) streams.
STDMETHOD (SetColorKey)(THIS_ IN COLORKEY *pColorKey ) PURE;
// this function gets the colorkey being used by the stream. Getting this value on the
// primary stream gets the destination colorkey being used by the overlay surface. Getting
// this value on the secondary pin returns the colorkey being used by that particular stream.
// When using this method, you are allowed to pass NULL for either pColorKey or pColor but
// not both.
STDMETHOD (GetColorKey)(THIS_ OUT COLORKEY *pColorKey, OUT DWORD *pColor ) PURE;
// this function sets the blending parameter which in turn defines, how the secondary stream
// is going to be blended with the primary stream. A value of 0 makes the secondary stream
// invisible, a value of 255 makes the primary stream invisible (in that region only ofcourse),
// and any value inbetween, say x, blends the secondary and primary streams in the ratio x : (255-x).
// If no value is set, the default is 255.
// Any value less than 0 or greater than 255 is invalid. Calling this function on the primary
// stream would result in a return value of E_UNEXPECTED.
STDMETHOD (SetBlendingParameter)(THIS_ IN DWORD dwBlendingParameter ) PURE;
// this function gets the blending parameter which in turn defines, how the secondary stream
// is currently being blended with the primary stream.
STDMETHOD (GetBlendingParameter)(THIS_ OUT DWORD *pdwBlendingParameter ) PURE;
// this function is used to set the Aspect Ratio Correction mode on the pin.
// If the mode is set to letter box, black color is painted on the excess region
STDMETHOD (SetAspectRatioMode)(THIS_ IN AM_ASPECT_RATIO_MODE amAspectRatioMode ) PURE;
// this function is used to get the Aspect Ratio Correction mode on the pin.
STDMETHOD (GetAspectRatioMode)(THIS_ OUT AM_ASPECT_RATIO_MODE* pamAspectRatioMode ) PURE;
// this function sets the stream to be transparent. That means that the stream is not going
// to occupy the whole of the rectangle (specified by SetRelativePosition), some of the region
// is going to be transparent i.e. the stream underneath, is going to see through.
// Calling this function on the primary stream would result in a return value of E_UNEXPECTED.
STDMETHOD (SetStreamTransparent)(THIS_ IN BOOL bStreamTransparent ) PURE;
// this function is used to tell whether the stream is transparent or not.
STDMETHOD (GetStreamTransparent)(THIS_ OUT BOOL *pbStreamTransparent ) PURE; };
DECLARE_INTERFACE_(IMixerPinConfig2, IMixerPinConfig) { // this functions sets the color-controls, if the vga chip supports it.
STDMETHOD (SetOverlaySurfaceColorControls)(THIS_ IN LPDDCOLORCONTROL pColorControl ) PURE;
// this functions gets the color-controls. It also returns the capability of the vga hardware
// in the dwFlags value of the struct.
STDMETHOD (GetOverlaySurfaceColorControls)(THIS_ OUT LPDDCOLORCONTROL pColorControl ) PURE; };
#ifdef __cplusplus
} #endif
#endif // #define __IMPConfig__
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