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//------------------------------------------------------------------------------
// File: IL21Dec.h
//
// Desc: Line 21 Decoder related definitions and interfaces for ActiveMovie.
//
// Copyright (c) 1992-2001, Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
#ifndef __IL21DEC__
#define __IL21DEC__
//
// Some enum data types used as line 21 decoder params by the interface
//
typedef enum _AM_LINE21_CCLEVEL { // should we use TC1, TC2 in stead?
AM_L21_CCLEVEL_TC2 = 0
} AM_LINE21_CCLEVEL, *PAM_LINE21_CCLEVEL ;
typedef enum _AM_LINE21_CCSERVICE {
AM_L21_CCSERVICE_None = 0,
AM_L21_CCSERVICE_Caption1,
AM_L21_CCSERVICE_Caption2,
AM_L21_CCSERVICE_Text1,
AM_L21_CCSERVICE_Text2,
AM_L21_CCSERVICE_XDS,
AM_L21_CCSERVICE_DefChannel = 10,
AM_L21_CCSERVICE_Invalid
} AM_LINE21_CCSERVICE, *PAM_LINE21_CCSERVICE ;
typedef enum _AM_LINE21_CCSTATE {
AM_L21_CCSTATE_Off = 0,
AM_L21_CCSTATE_On
} AM_LINE21_CCSTATE, *PAM_LINE21_CCSTATE ;
typedef enum _AM_LINE21_CCSTYLE {
AM_L21_CCSTYLE_None = 0,
AM_L21_CCSTYLE_PopOn,
AM_L21_CCSTYLE_PaintOn,
AM_L21_CCSTYLE_RollUp
} AM_LINE21_CCSTYLE, *PAM_LINE21_CCSTYLE ;
typedef enum _AM_LINE21_DRAWBGMODE {
AM_L21_DRAWBGMODE_Opaque,
AM_L21_DRAWBGMODE_Transparent
} AM_LINE21_DRAWBGMODE, *PAM_LINE21_DRAWBGMODE ;
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
//
// Line 21 Decoder standard COM interface
//
DECLARE_INTERFACE_(IAMLine21Decoder, IUnknown)
{
public:
//
// Decoder options to be used by apps
//
// What is the decoder's level
STDMETHOD(GetDecoderLevel)(THIS_ AM_LINE21_CCLEVEL *lpLevel) PURE ;
// supported level value is AM_L21Level_TC2 only
// skipping the SetDecoderLevel( )
// Which of the services is being currently used
STDMETHOD(GetCurrentService)(THIS_ AM_LINE21_CCSERVICE *lpService) PURE ;
STDMETHOD(SetCurrentService)(THIS_ AM_LINE21_CCSERVICE Service) PURE ;
// supported service values are AM_L21Service_Caption1,
// AM_L21Service_Caption2, AM_L21Service_Text1, AM_L21Service_Text2,
// AM_L21Service_XDS, AM_L21Service_None)
// Query/Set the service state (On/Off)
// supported state values are AM_L21State_On and AM_L21State_Off
STDMETHOD(GetServiceState)(THIS_ AM_LINE21_CCSTATE *lpState) PURE ;
STDMETHOD(SetServiceState)(THIS_ AM_LINE21_CCSTATE 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_LINE21_DRAWBGMODE *lpMode) PURE ;
STDMETHOD(SetDrawBackgroundMode)(THIS_ AM_LINE21_DRAWBGMODE Mode) PURE ;
// supported mode values are AM_L21_DrawBGMode_Opaque and
// AM_L21_DrawBGMode_Transparent
} ;
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // __IL21DEC__
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