81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
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/************************************************************************/
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/* */
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/* CVTDDC.H */
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/* */
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/* November 10 1995 (c) 1995 ATI Technologies Incorporated. */
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/************************************************************************/
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/********************** PolyTron RCS Utilities
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$Revision: 1.0 $
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$Date: 21 Nov 1995 11:04:58 $
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$Author: RWolff $
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$Log: S:/source/wnt/ms11/miniport/archive/cvtddc.h_v $
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//
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// Rev 1.0 21 Nov 1995 11:04:58 RWolff
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//Initial revision.
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End of PolyTron RCS section *****************/
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/*
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* Prototypes for functions supplied by CVTVDIF.C
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*/
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extern ULONG IsDDCSupported(void);
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extern VP_STATUS MergeEDIDTables(void);
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/*
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* Definitions used to identify the type of external mode
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* table source to be merged with the "canned" tables.
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*/
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enum {
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MERGE_UNKNOWN = 0, /* Source not yet determined */
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MERGE_VDIF_FILE, /* Source is a VDIF file read from disk */
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MERGE_EDID_DDC, /* Source is an EDID structure transferred via DDC */
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MERGE_VDIF_DDC /* Source is a VDIF file transferred via DDC */
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};
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/*
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* Definitions and data structures used only within CVTDDC.C
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*/
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#if defined(INCLUDE_CVTDDC)
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/*
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* Detailed timing description from EDID structure
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*/
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#pragma pack(1)
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struct EdidDetailTiming{
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USHORT PixClock; /* Pixel clock in units of 10 kHz */
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UCHAR HorActiveLowByte; /* Low byte of Horizontal Active */
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UCHAR HorBlankLowByte; /* Low byte of Horizontal Blank (total - active) */
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UCHAR HorHighNybbles; /* High nybbles of above 2 values */
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UCHAR VerActiveLowByte; /* Low byte of Vertical Active */
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UCHAR VerBlankLowByte; /* Low byte of Vertical Blank (total - active) */
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UCHAR VerHighNybbles; /* High nybbles of above 2 values */
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UCHAR HSyncOffsetLB; /* Low byte of hor. sync offset */
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UCHAR HSyncWidthLB; /* Low byte of hor. sync width */
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UCHAR VSyncOffWidLN; /* Low nybbles of ver. sync offset and width */
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UCHAR SyncHighBits; /* High bits of sync values */
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UCHAR HorSizeLowByte; /* Low byte of hor. size in mm */
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UCHAR VerSizeLowByte; /* Low byte of ver. size in mm */
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UCHAR SizeHighNybbles; /* High nybbles of above 2 values */
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UCHAR HorBorder; /* Size of horizontal overscan */
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UCHAR VerBorder; /* Size of vertical overscan */
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UCHAR Flags; /* Interlace and sync polarities */
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};
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#pragma pack()
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#define EDID_FLAGS_INTERLACE 0x80
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#define EDID_FLAGS_SYNC_TYPE_MASK 0x18
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#define EDID_FLAGS_SYNC_ANALOG_COMP 0x00
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#define EDID_FLAGS_SYNC_BIPOLAR_AN_COMP 0x08
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#define EDID_FLAGS_SYNC_DIGITAL_COMP 0x10
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#define EDID_FLAGS_SYNC_DIGITAL_SEP 0x18
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#define EDID_FLAGS_V_SYNC_POS 0x04
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#define EDID_FLAGS_H_SYNC_POS 0x02
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#endif
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