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//------------------------------------------------------------------------------
// File: iwstdec.h
//
// Desc: WST Decoder related definitions and interfaces for ActiveMovie
//
// Copyright (c) 1999 - 2001, Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
//
#ifndef __IWSTDEC__
#define __IWSTDEC__
//
// Some data types used as WST decoder parameters by the interface
//
typedef struct _AM_WST_PAGE {
DWORD dwPageNr ;
DWORD dwSubPageNr ;
BYTE *pucPageData;
} AM_WST_PAGE, *PAM_WST_PAGE ;
typedef enum _AM_WST_LEVEL {
AM_WST_LEVEL_1_5 = 0
} AM_WST_LEVEL, *PAM_WST_LEVEL ;
typedef enum _AM_WST_SERVICE {
AM_WST_SERVICE_None = 0,
AM_WST_SERVICE_Text,
AM_WST_SERVICE_IDS,
AM_WST_SERVICE_Invalid
} AM_WST_SERVICE, *PAM_WST_SERVICE ;
typedef enum _AM_WST_STATE {
AM_WST_STATE_Off = 0,
AM_WST_STATE_On
} AM_WST_STATE, *PAM_WST_STATE ;
typedef enum _AM_WST_STYLE {
AM_WST_STYLE_None = 0,
AM_WST_STYLE_Invers
} AM_WST_STYLE, *PAM_WST_STYLE ;
typedef enum _AM_WST_DRAWBGMODE {
AM_WST_DRAWBGMODE_Opaque,
AM_WST_DRAWBGMODE_Transparent
} AM_WST_DRAWBGMODE, *PAM_WST_DRAWBGMODE ;
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
//
// WST Decoder standard COM interface
//
DECLARE_INTERFACE_(IAMWstDecoder, IUnknown)
{
public:
//
// Decoder options to be used by apps
//
// What is the decoder's level
STDMETHOD(GetDecoderLevel)(THIS_ AM_WST_LEVEL *lpLevel) PURE ;
// STDMETHOD(SetDecoderLevel)(THIS_ AM_WST_LEVEL Level) PURE ;
// Which of the services is being currently used
STDMETHOD(GetCurrentService)(THIS_ AM_WST_SERVICE *lpService) PURE ;
// STDMETHOD(SetCurrentService)(THIS_ AM_WST_SERVICE Service) PURE ;
// Query/Set the service state (On/Off)
// supported state values are AM_WSTState_On and AM_WSTState_Off
STDMETHOD(GetServiceState)(THIS_ AM_WST_STATE *lpState) PURE ;
STDMETHOD(SetServiceState)(THIS_ AM_WST_STATE State) PURE ;
//
// Output options to be used by downstream filters
//
// What size, bitdepth etc should the output video be
STDMETHOD(GetOutputFormat)(THIS_ LPBITMAPINFOHEADER lpbmih) PURE ;
// GetOutputFormat() method, if successful, returns
// 1. S_FALSE if no output format has so far been defined by downstream filters
// 2. S_OK if an output format has already been defined by downstream filters
STDMETHOD(SetOutputFormat)(THIS_ LPBITMAPINFO lpbmi) PURE ;
// Specify physical color to be used in colorkeying the background
// for overlay mixing
STDMETHOD(GetBackgroundColor)(THIS_ DWORD *pdwPhysColor) PURE ;
STDMETHOD(SetBackgroundColor)(THIS_ DWORD dwPhysColor) PURE ;
// Specify if whole output bitmap should be redrawn for each sample
STDMETHOD(GetRedrawAlways)(THIS_ LPBOOL lpbOption) PURE ;
STDMETHOD(SetRedrawAlways)(THIS_ BOOL bOption) PURE ;
// Specify if the caption text background should be opaque/transparent
STDMETHOD(GetDrawBackgroundMode)(THIS_ AM_WST_DRAWBGMODE *lpMode) PURE ;
STDMETHOD(SetDrawBackgroundMode)(THIS_ AM_WST_DRAWBGMODE Mode) PURE ;
// supported mode values are AM_WST_DrawBGMode_Opaque and
// AM_WST_DrawBGMode_Transparent
STDMETHOD(SetAnswerMode)(THIS_ BOOL bAnswer) PURE ;
STDMETHOD(GetAnswerMode)(THIS_ BOOL* pbAnswer) PURE ;
STDMETHOD(SetHoldPage)(THIS_ BOOL bHoldPage) PURE ;
STDMETHOD(GetHoldPage)(THIS_ BOOL* pbHoldPage) PURE ;
STDMETHOD(GetCurrentPage)(THIS_ PAM_WST_PAGE pWstPage) PURE;
STDMETHOD(SetCurrentPage)(THIS_ AM_WST_PAGE WstPage) PURE;
} ;
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // __IWSTDEC__
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