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//------------------------------------------------------------------------------
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// File: IL21Dec.h
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//
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// Desc: Line 21 Decoder related definitions and interfaces for ActiveMovie.
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//
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// Copyright (c) 1992 - 2000, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef __IL21DEC__
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#define __IL21DEC__
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//
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// Some enum data types used as line 21 decoder params by the interface
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//
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typedef enum _AM_LINE21_CCLEVEL { // should we use TC1, TC2 in stead?
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AM_L21_CCLEVEL_TC2 = 0
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} AM_LINE21_CCLEVEL, *PAM_LINE21_CCLEVEL ;
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typedef enum _AM_LINE21_CCSERVICE {
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AM_L21_CCSERVICE_None = 0,
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AM_L21_CCSERVICE_Caption1,
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AM_L21_CCSERVICE_Caption2,
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AM_L21_CCSERVICE_Text1,
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AM_L21_CCSERVICE_Text2,
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AM_L21_CCSERVICE_XDS,
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AM_L21_CCSERVICE_DefChannel = 10,
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AM_L21_CCSERVICE_Invalid
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} AM_LINE21_CCSERVICE, *PAM_LINE21_CCSERVICE ;
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typedef enum _AM_LINE21_CCSTATE {
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AM_L21_CCSTATE_Off = 0,
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AM_L21_CCSTATE_On
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} AM_LINE21_CCSTATE, *PAM_LINE21_CCSTATE ;
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typedef enum _AM_LINE21_CCSTYLE {
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AM_L21_CCSTYLE_None = 0,
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AM_L21_CCSTYLE_PopOn,
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AM_L21_CCSTYLE_PaintOn,
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AM_L21_CCSTYLE_RollUp
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} AM_LINE21_CCSTYLE, *PAM_LINE21_CCSTYLE ;
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typedef enum _AM_LINE21_DRAWBGMODE {
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AM_L21_DRAWBGMODE_Opaque,
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AM_L21_DRAWBGMODE_Transparent
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} AM_LINE21_DRAWBGMODE, *PAM_LINE21_DRAWBGMODE ;
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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//
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// Line 21 Decoder standard COM interface
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//
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DECLARE_INTERFACE_(IAMLine21Decoder, IUnknown)
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{
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public:
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//
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// Decoder options to be used by apps
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//
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// What is the decoder's level
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STDMETHOD(GetDecoderLevel)(THIS_ AM_LINE21_CCLEVEL *lpLevel) PURE ;
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// supported level value is AM_L21Level_TC2 only
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// skipping the SetDecoderLevel( )
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// Which of the services is being currently used
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STDMETHOD(GetCurrentService)(THIS_ AM_LINE21_CCSERVICE *lpService) PURE ;
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STDMETHOD(SetCurrentService)(THIS_ AM_LINE21_CCSERVICE Service) PURE ;
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// supported service values are AM_L21Service_Caption1,
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// AM_L21Service_Caption2, AM_L21Service_Text1, AM_L21Service_Text2,
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// AM_L21Service_XDS, AM_L21Service_None)
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// Query/Set the service state (On/Off)
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// supported state values are AM_L21State_On and AM_L21State_Off
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STDMETHOD(GetServiceState)(THIS_ AM_LINE21_CCSTATE *lpState) PURE ;
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STDMETHOD(SetServiceState)(THIS_ AM_LINE21_CCSTATE State) PURE ;
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//
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// Output options to be used by downstream filters
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//
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// What size, bitdepth etc should the output video be
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STDMETHOD(GetOutputFormat)(THIS_ LPBITMAPINFOHEADER lpbmih) PURE ;
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// GetOutputFormat() method, if successful, returns
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// 1. S_FALSE if no output format has so far been defined by downstream filters
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// 2. S_OK if an output format has already been defined by downstream filters
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STDMETHOD(SetOutputFormat)(THIS_ LPBITMAPINFO lpbmi) PURE ;
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// Specify physical color to be used in colorkeying the background
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// for overlay mixing
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STDMETHOD(GetBackgroundColor)(THIS_ DWORD *pdwPhysColor) PURE ;
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STDMETHOD(SetBackgroundColor)(THIS_ DWORD dwPhysColor) PURE ;
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// Specify if whole output bitmap should be redrawn for each sample
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STDMETHOD(GetRedrawAlways)(THIS_ LPBOOL lpbOption) PURE ;
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STDMETHOD(SetRedrawAlways)(THIS_ BOOL bOption) PURE ;
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// Specify if the caption text background should be opaque/transparent
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STDMETHOD(GetDrawBackgroundMode)(THIS_ AM_LINE21_DRAWBGMODE *lpMode) PURE ;
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STDMETHOD(SetDrawBackgroundMode)(THIS_ AM_LINE21_DRAWBGMODE Mode) PURE ;
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// supported mode values are AM_L21_DrawBGMode_Opaque and
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// AM_L21_DrawBGMode_Transparent
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} ;
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // __IL21DEC__
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