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Annotation of researchv10no/cmd/bcp/pic.h, revision 1.1.1.1

1.1       root        1: /* Copyright (c) 1989, 1990 AT&T --- All Rights Reserved.              */
                      2: /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T.                */
                      3: /* The copyright notice does not imply actual or intended publication. */
                      4: /* AUTHORS:                                            */
                      5: /*     H. S. Baird - ATT-BL MH - first versions        */
                      6: 
                      7: /* pic.h -  picture files.  See man page for picfile(5).
                      8:    They have an ascii header, terminated by \n\n; see PIC_hdr for its data fields.
                      9:    The rest is binary scanner data. Each `PIC_hdr.bpl' bytes holds one scan-line's
                     10:    pixels, 1 bit/pixel.  A `1' bit means black.  The order of the bytes in a line
                     11:    is left-to-right across the page.  The low-order bit in a byte is the left-most.
                     12:    Conventionally, X-coordinates start at 0, at the left of the page, and
                     13:    increase to the right.  Y-coordinates start at 0 at the top of the page,
                     14:    and increase down.
                     15:    NOTE:  must be preceded by #include "Coord.h"
                     16:    */
                     17: 
                     18: typedef struct PIC_hdr {
                     19:        /* Contents of picfile ASCII header (or other structure) */
                     20:        char type[40];          /* "rle" "dump" "binary" "ccitt-g4" "imdir" etc */
                     21:        Bbx bx;                 /* WINDOW (bounding box) */
                     22:        short res_x;            /* resolution in pixels/inch (x,y may differ) */
                     23:        short res_y;
                     24:        char *parms;            /* PARMS= string */
                     25:        char *misc;             /* all other unexpected header lines, catenated */
                     26:        /* the following are used by I/O routines */
                     27:        FILE *fp;
                     28:        long seek;              /* current seek address */
                     29:        int bpl;                /* bytes per line (in file) */
                     30:        unsigned char *line;    /* one line of picture (malloc space) */
                     31:        unsigned char *pline;   /* prior line of picture (malloc space) */
                     32:        Scoor cy;               /* index no. of *line */
                     33:        } PIC_hdr;
                     34: #define Init_PIC_hdr {"",Init_Bbx,0,0,NULL,NULL,NULL,0L,0,NULL,NULL,0}
                     35: #if MAIN
                     36:     PIC_hdr empty_PIC_hdr = Init_PIC_hdr;
                     37: #else
                     38:     extern PIC_hdr empty_PIC_hdr;
                     39: #endif
                     40: 
                     41: /* these functions are in /usr/hsb/ocr/piclib.c */
                     42: PIC_hdr *alloc_PIC_hdr();
                     43: int PIC_get_hdr();
                     44: PIC_put_hdr();
                     45: err_PIC_line();
                     46: PIC_skip();
                     47: int PIC_rline();
                     48: int PIC_wline();
                     49: char *PIC_hdr_toa();

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