+++ /dev/null
-/* \r
- *************************************************************************\r
- *\r
- * PCX_INT.H - PCX_LIB Library Internal Definitions Include File\r
- *\r
- * Version: 1.00B\r
- *\r
- * History: 91/02/14 - Created\r
- * 91/04/01 - Release 1.00A\r
- * 91/04/07 - Release 1.00B\r
- *\r
- * Compiler: Microsoft C V6.0\r
- *\r
- * Author: Ian Ashdown, P.Eng.\r
- * byHeart Software\r
- * 620 Ballantree Road\r
- * West Vancouver, B.C.\r
- * Canada V7S 1W3\r
- * Tel. (604) 922-6148\r
- * Fax. (604) 987-7621\r
- *\r
- * Copyright: Public Domain\r
- *\r
- *************************************************************************\r
- */\r
-\f\r
-/* DEFINITIONS */\r
-\r
-#define _PCX_INT_H 1\r
-\r
-#ifndef _PCX_EXT_H\r
-#include "PCX_EXT.H" /* Get external PCX definitions, etc. */\r
-#endif\r
-\r
-#define PCX_HERC 0xff /* Hercules 720 x 348 monochrome mode */\r
-\r
-#define PCX_COMP_FLAG 0xc0 /* Compressed data flag mask */\r
-#define PCX_COMP_MASK 0x3f /* Data repeat count mask */\r
-\r
-#define PCX_PAL_MASK 0x03 /* Palette interpretation mask */\r
-#define PCX_EPAL_FLAG 0x0c /* Extended palette flag */\r
-\r
-#define PCX_PAL_SIZE 16 /* File header palette size */\r
-#define PCX_EPAL_SIZE 256 /* Extended palette size */\r
-\r
-#define PCX_MAXLINESZ 640 /* Maximum PCX line buffer size */\r
-\r
-/* Color graphics adapter color palette macros */\r
-\r
-#define PCX_CGA_BKGND(x) (x[0].red >> 4) /* Background color */\r
-#define PCX_CGA_BURST(x) (x[1].red & 0x80) /* Color burst */\r
-#define PCX_CGA_SELECT(x) (x[1].red & 0x40) /* Palette selector */\r
-#define PCX_CGA_INTENSITY(x) (x[1].red & 0x20) /* Intensity */\r
-\r
-typedef unsigned char BYTE; /* 8-bit data type */\r
-typedef unsigned int WORD; /* 16-bit data type */\r
-\f\r
-/* STRUCTURE DECLARATIONS */\r
-\r
-typedef struct pcx_pal /* PCX palette array element */\r
-{\r
- BYTE red; /* Red intensity */\r
- BYTE green; /* Green intensity */\r
- BYTE blue; /* Blue intensity */\r
-}\r
-PCX_PAL;\r
-\r
-typedef struct pcx_hdr /* PCX file header (Version 5) */\r
-{\r
- BYTE pcx_id; /* Always 0x0a for PCX files */\r
- BYTE version; /* Version number */\r
- BYTE encoding; /* 1 = PCX run length encoding */\r
- BYTE bppixel; /* Number of bits/pixel per color plane */\r
- WORD xul; /* X-position of upper left corner */\r
- WORD yul; /* Y-position of upper left corner */\r
- WORD xlr; /* X-position of lower right corner */\r
- WORD ylr; /* Y-position of lower right corner */\r
- WORD horz_res; /* Horizontal resolution */\r
- WORD vert_res; /* Vertical resolution */\r
- PCX_PAL palette[PCX_PAL_SIZE]; /* Hardware R-G-B palette */\r
- BYTE reserved; /* Unused in Version 5 */\r
- BYTE nplanes; /* Number of color planes */\r
- WORD bppscan; /* Number of bytes per plane scan line */\r
- WORD palette_type; /* Palette interpretation */\r
- WORD scrn_width; /* Horizontal screen size in pixels */\r
- WORD scrn_height; /* Vertical screen size in pixels */\r
- BYTE filler[54]; /* Padding to fill out 128-byte header */\r
-\r
- /* Notes: */\r
- /* */\r
- /* 1. The "version" member may be one of the following: */\r
- /* */\r
- /* 0 - PC Paintbrush Version 2.5 */\r
- /* 2 - PC Paintbrush Version 2.8 (with palette information) */\r
- /* 3 - PC Paintbrush Version 2.8 (w/o palette information) */\r
- /* 4 - PC Paintbrush for Windows (PC Paintbrush Plus for */\r
- /* Windows and Windows 3.0 Paintbrush use Version 5) */\r
- /* 5 - PC Paintbrush 3.0 and greater (including PC Paintbrush */\r
- /* Plus and Publisher's Paintbrush) */\r
- /* */\r
- /* 2. ZSoft Corporation has reserved the right to change the */\r
- /* encoding method in future versions for better image */\r
- /* compression performance. The "encoding" member value may */\r
- /* change accordingly. */\r
- /* */\r
- /* 3. The value of the "bppixel" member depends on the type of */\r
- /* video display adapter and its video mode. Typical values */\r
- /* are 1, 2, 4 and 8. */\r
- /* */\r
- /* 4. The "xul", "yul", "xlr" and "ylr" members are zero-based and */\r
- /* and inclusive values indicating the position of the image on */\r
- /* the screen. The display functions can ignore this */\r
- /* information if desired. */\r
- /* */\r
- /* 5. The "horz_res" and "vert_res" members refer to the "dots per */\r
- /* inch" resolution of the scanning device used to create the */\r
- /* image. For images created on video display adapters, these */\r
- /* values typically refer to the horizontal and vertical */\r
- /* resolutions in pixels (e.g. - 640 x 350 for an EGA display). */\r
- /* */\r
- /* The display function ignore these members, as some programs */\r
- /* programs do not bother to initialize them when creating PCX */\r
- /* image files. */\r
- /* */\r
- /* 6. The "palette" member is typically left uninitialized if an */\r
- /* extended 256-color palette is appended to the PCX image */\r
- /* file. */\r
- /* */\r
- /* 7. The "reserved" member used to contain the MS-DOS video mode */\r
- /* that the PCX image was intended to be displayed under. This */\r
- /* member is ignored in Version 5. ZSoft recommends that it be */\r
- /* set to zero. */\r
- /* */\r
- /* 8. The value of the "nplanes" member depends on the type of */\r
- /* video display adapter and its video mode. Typical values */\r
- /* are 1, 2, 3 and 4. */\r
- /* */\r
- /* 9. The value of the "bppscan" member should be an even number */\r
- /* (for compatibility with some existing commercial programs.) */\r
- /* It indicates the number of bytes required to buffer a */\r
- /* decoded scan line for one color plane. */\r
- /* */\r
- /* 10. The "palette_type" member indicates whether the palette */\r
- /* represents a color or grayscale palette. It is a bit-mapped */\r
- /* variable (only the lowest two bits are significant; the */\r
- /* others are ignored) with two possible values: */\r
- /* */\r
- /* 0x01 - color or black & white */\r
- /* 0x02 - grayscale */\r
- /* */\r
- /* If "grayscale" is indicated, the file color palette must be */\r
- /* set to shades of gray. The file decoding functions can then */\r
- /* either use this palette or assume a default grayscale */\r
- /* palette if necessary. */\r
- /* */\r
- /* PC Paintbrush IV and IV Plus ignore this member. */\r
- /* */\r
- /* 11. The "scrn_width" and "scrn_height" members were added for */\r
- /* PC Paintbrush IV Version 1.02 and IV Plus Version 1.0. They */\r
- /* may not be initialized in some older Version 5 PCX files, or */\r
- /* the "scrn_width" member may be initialized with the screen */\r
- /* height and the "scrn_height" member uninitialized. ZSoft */\r
- /* recommends that this information be ignored. */\r
- /* */\r
- /* 12. ZSoft recommends that the "filler" bytes be set to zero. */\r
-}\r
-PCX_HDR;\r
-\r
-typedef struct pcx_workblk /* PCX image file workblock */\r
-{\r
- /* File header */\r
-\r
- FILE *fp; /* PCX image file pointer */\r
- PCX_HDR header; /* PCX image file header */\r
- PCX_PAL *palettep; /* Color palette pointer */\r
- BOOL epal_flag; /* Extended color palette flag */\r
-\r
- /* Image manipulation variables */\r
-\r
- int num_bytes; /* Number of bytes to display */\r
- int mask; /* Unseen pixels mask */\r
- unsigned long page_offset; /* Display page address offset */\r
-\r
- /* Image manipulation function pointer */\r
-\r
- void (*pcx_funcp)(struct pcx_workblk *, unsigned char _far *, int);\r
-}\r
-PCX_WORKBLK;\r
-\f\r
-/* FUNCTIONS PROTOTYPES */\r
-\r
-extern BOOL pcx_close(PCX_WORKBLK *);\r
-\r
-extern PCX_WORKBLK *pcx_open(char *, BOOL);\r
-\r
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