107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
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/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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bootfint.h
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Abstract:
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Header file describing the bootfont.bin file used to provide
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dbcs support during system or setup bootstrap.
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Author:
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tedm 11-July-1995
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Revision History:
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--*/
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//
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// Define maximum number of dbcs lead byte ranges we support.
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//
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#define MAX_DBCS_RANGE 5
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//
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// Define signature value.
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//
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#define BOOTFONTBIN_SIGNATURE 0x5465644d
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//
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// Define structure used as a header for the bootfont.bin file.
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//
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typedef struct _BOOTFONTBIN_HEADER {
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//
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// Signature. Must be BOOTFONTBIN_SIGNATURE.
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//
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ULONG Signature;
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//
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// Language id of the language supported by this font.
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// This should match the language id of resources in msgs.xxx.
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//
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ULONG LanguageId;
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//
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// Number of sbcs characters and dbcs characters contained in the file.
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//
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unsigned NumSbcsChars;
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unsigned NumDbcsChars;
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//
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// Offsets within the file to the images.
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//
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unsigned SbcsOffset;
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unsigned DbcsOffset;
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//
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// Total sizes of the images.
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//
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unsigned SbcsEntriesTotalSize;
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unsigned DbcsEntriesTotalSize;
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//
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// Dbcs lead byte table. Must contain a pair of 0's to indicate the end.
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//
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UCHAR DbcsLeadTable[(MAX_DBCS_RANGE+1)*2];
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//
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// Height values for the font.
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// CharacterImageHeight is the height in scan lines/pixels of the
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// font image. Each character is drawn with additional 'padding'
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// lines on the top and bottom, whose sizes are also contained here.
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//
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UCHAR CharacterImageHeight;
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UCHAR CharacterTopPad;
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UCHAR CharacterBottomPad;
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//
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// Width values for the font. These values contain the width in pixels
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// of a single byte character and double byte character.
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//
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// NOTE: CURRENTLY THE SINGLE BYTE WIDTH *MUST* BE 8 AND THE DOUBLE BYTE
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// WIDTH *MUST* BE 16!!!
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//
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UCHAR CharacterImageSbcsWidth;
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UCHAR CharacterImageDbcsWidth;
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} BOOTFONTBIN_HEADER, *PBOOTFONTBIN_HEADER;
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//
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// Images themselves follow.
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//
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// First there are SbcsCharacters entries for single-byte chars.
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// The first byte in each entry is the ascii char code. The next n bytes are
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// the image. n is dependent on the width and height of an sbcs char.
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//
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// Following these are the dbcs images. The first 2 bytes are the dbcs
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// character code (highbyte lowbyte) and the next n bytes are the image.
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// n is dependent on the width and height of a dbcs char.
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//
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// Important note: the characters must be sorted in ascending order!
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//
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