il21dec.h
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上传日期:2019-04-29
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- //------------------------------------------------------------------------------
- // File: IL21Dec.h
- //
- // Desc: Line 21 Decoder related definitions and interfaces for ActiveMovie.
- //
- // Copyright (c) 1992 - 2000, 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__