Annotation of researchv10no/cmd/bcp/pic.h, revision 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        !             2: /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T.                */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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