read98721.c File Reference

#include "starbase.c.h"
#include <stdio.h>
#include "rle.h"

Include dependency graph for read98721.c:

Go to the source code of this file.

Macros
#define	TRUE   1
#define	FALSE   0
#define	MAX(i, j)    ((i) > (j) ? (i) : (j))
#define	NCHANS   3
#define	NCMAPS   3
#define	CMAPLEN   8
#define	COLMAPLEN   256
#define	MAX_X_SIZE   1280
#define	D_XSTART   0
#define	D_YSTART   0
#define	D_XSIZE   512
#define	D_YSIZE   480

Functions
	main (int argc, argv)
	setup_graphics_device (int *dev_xmax, int *dev_ymax)
	clip (int dev_xmax, int dev_ymax, int *xstart, int *ystart, int *xsize, int *ysize)
	read_scanline (rle_hdr *the_hdr, int y, rows)
	read_color_maps (int pic_fd, rle_map *cmap)

Variables
int	cmap_flag = 0
int	display_flag = 0
int	driver_flag = 0
char *	display_name = "/dev/crt"
char *	driver_name = "hp98721"
int	pos_flag = 0
int	xstart = 0
int	ystart = 0
int	size_flag = 0
int	xsize = 512
int	ysize = 480
int	overlay_flag = 0
int	backgnd_flag = 0
int	backgnd [3]
int	fname_flag = 0
char *	fname = ((void *)0)
int	ncomments = 0
char **	comments = ((void *)0)
int	picture_fd

Macro Definition Documentation

#define CMAPLEN   8

Definition at line 31 of file read98721.c.

#define COLMAPLEN   256

Definition at line 32 of file read98721.c.

#define D_XSIZE   512

Definition at line 56 of file read98721.c.

#define D_XSTART   0

Definition at line 48 of file read98721.c.

#define D_YSIZE   480

Definition at line 57 of file read98721.c.

#define D_YSTART   0

Definition at line 49 of file read98721.c.

#define FALSE   0

Definition at line 26 of file read98721.c.

#define MAX	(		i,
			j
	)		((i) > (j) ? (i) : (j))

Definition at line 27 of file read98721.c.

#define MAX_X_SIZE   1280

Definition at line 33 of file read98721.c.

#define NCHANS   3

Definition at line 29 of file read98721.c.

#define NCMAPS   3

Definition at line 30 of file read98721.c.

#define TRUE   1

Definition at line 25 of file read98721.c.

Function Documentation

clip	(	int	dev_xmax,
		int	dev_ymax,
		int*	xstart,
		int*	ystart,
		int*	xsize,
		int*	ysize
	)

Definition at line 203 of file read98721.c.

{
    if(*xstart < 0) {
        *xsize += *xstart;
        *xstart = 0;
    }
    if(*ystart < 0) {
        *ysize += *ystart;
        *ystart = 0;
    }
    if(*xstart + *xsize > dev_xmax)
        *xsize = dev_xmax - *xstart;
    if(*ystart + *ysize > dev_ymax)
        *ysize = dev_ymax - *ystart;
}

main	(	int	argc,
		argv
	)

Definition at line 79 of file read98721.c.

{
    int i,y;
    int dev_xmax,dev_ymax;
    rle_hdr the_hdr;
    rle_map cmap[COLMAPLEN * NCMAPS];
    unsigned char scanline[NCHANS][MAX_X_SIZE],*rows[NCHANS]; /* Scanline storage & RLE row pointers */

    if (scanargs(argc, argv,
    "% m%- O%- d%-display!s x%-driver!s p%-xstart!dystart!d s%-xsize!dysize!d \
    b%-rbak!dgbak!dbbak!d o%-fname!s comments%*s",
         &cmap_flag,
         &overlay_flag,
         &display_flag,&display_name,
         &driver_flag,&driver_name,
         &pos_flag,&xstart,&ystart,
         &size_flag,&xsize,&ysize,
         &backgnd_flag,&(backgnd[0]),&(backgnd[1]),&(backgnd[2]),
         &fname_flag,&fname,
         &ncomments,&comments) == 0)
    exit(1);

    the_hdr = *rle_hdr_init( (rle_hdr *)NULL );
    rle_names( &the_hdr, cmd_name( argv ), fname, 0 );

    if(overlay_flag && backgnd_flag) {
    fprintf(stderr,"read98721: incompatible options -O and -b\n");
    exit(1);
    }

    /* initialize the display device */
    setup_graphics_device(&dev_xmax,&dev_ymax);

    clip(dev_xmax,dev_ymax,&xstart,&ystart,&xsize,&ysize);
    if((xsize <= 0)||(ysize <= 0)) {
    fprintf(stderr,"%s: null image size\n", the_hdr.cmd);
    exit(1);
    }

    /* open output file */
    the_hdr.rle_file = rle_open_f(the_hdr.cmd, fname, "w");
    /* initialize image header */
    the_hdr.ncolors = NCHANS;
    the_hdr.bg_color = backgnd_flag ? backgnd : (int *)0;
    the_hdr.alpha = FALSE;
    the_hdr.background = backgnd_flag ? 2 : (overlay_flag ? 1 : 0);
    the_hdr.xmin = xstart;
    the_hdr.xmax = xstart + xsize -1;
    the_hdr.ymin = ystart;
    the_hdr.ymax = ystart + ysize -1;
    if(cmap_flag) {
        read_color_maps(picture_fd,cmap);
    the_hdr.ncmap = NCMAPS;
    the_hdr.cmaplen = CMAPLEN;
    the_hdr.cmap = cmap;
    } else {
    the_hdr.ncmap = 0;
    the_hdr.cmaplen = 0;
    the_hdr.cmap = (rle_map *)0;
    }
    the_hdr.bits[0] = 0x07;
    for(i=0; i<ncomments; i++)
    rle_putcom(comments[i],&the_hdr);

    rle_addhist( argv, (rle_hdr *)NULL, &the_hdr );
    rle_put_setup(&the_hdr);

    /* set up rows to point to our copy of the scanline */
    for (i= 0; i<NCHANS; i++)
    rows[i] = scanline[i];

    /* save image */
    for(y=the_hdr.ymin; y<=the_hdr.ymax; y++) {
    read_scanline(y,rows);
    rle_putrow(rows,xsize,&the_hdr);
    }

    rle_puteof(&the_hdr);

    exit(0);
}

read_color_maps	(	int	pic_fd,
		rle_map *	cmap
	)

Definition at line 236 of file read98721.c.

{
    int i,cmaplen;
    rle_map *rmap,*gmap,*bmap;
    float colmap[COLMAPLEN][NCMAPS];

    inquire_color_table(pic_fd,0,COLMAPLEN,colmap);
    rmap = cmap;
    gmap = cmap + COLMAPLEN;
    bmap = cmap + COLMAPLEN * 2;
    for(i=0; i<COLMAPLEN; i++) {
        rmap[i] = colmap[i][2];
        gmap[i] = colmap[i][1];
        bmap[i] = colmap[i][0];
    }
}

read_scanline	(	rle_hdr *	the_hdr,
		int	y,
		rows
	)

Definition at line 221 of file read98721.c.

{
    int i,j;

    for(i=0,j=NCHANS-1; i<NCHANS; i++,j--) {
        bank_switch(picture_fd,j,0);
            block_read(picture_fd,(float)(the_hdr->xmin),(float)y,
           the_hdr->xmax - the_hdr->xmin + 1,1,rows[i],FALSE);
    }
}

setup_graphics_device	(	int *	dev_xmax,
		int*	dev_ymax
	)

Definition at line 164 of file read98721.c.

{
        float p_lim[2][3],res[3],p1[3],p2[3];
        int map_size;

        picture_fd = gopen(display_name,OUTDEV,driver_name,0);
        if(picture_fd < 0) {
        fprintf(stderr,"read98721: can't open device.\n");
        exit(1);
        }
        shade_mode(picture_fd,CMAP_FULL,FALSE);

        /* find out info about this device. */
        inquire_sizes(picture_fd,p_lim,res,p1,p2,&map_size);

        /* set the screen limits in pixels so we can use starbase in a device
        * independent way.
        *
        * it is assumed that the p_lim values returned by inquire_sizes are the
        * lower left screen coordinates in (float) pixels and the upper right
        * screen coordinates in (float) pixels.  It is also assumed that the
        * range of values in x and y coordinates are given from 0 to some
        * positive maximum value.
        */
        *dev_xmax = MAX(p_lim[0][0],p_lim[1][0]) + 1.0;
        *dev_ymax = MAX(p_lim[0][1],p_lim[1][1]) + 1.0;

        /* set to use the whole display surface. */
        mapping_mode(picture_fd,DISTORT);

        /* set to address the pixels in a device independent way. */
        vdc_extent(picture_fd,0.0,0.0,0.0,(float)(*dev_xmax)-1.0,
           (float)(*dev_ymax)-1.0,0.0);
        clip_rectangle(picture_fd,0.0,(float)(*dev_xmax)-1.0,
               0.0,(float)(*dev_ymax)-1.0);
}

Variable Documentation

int backgnd[3]

Definition at line 66 of file read98721.c.

int backgnd_flag = 0

Definition at line 64 of file read98721.c.

int cmap_flag = 0

Definition at line 36 of file read98721.c.

char** comments = ((void *)0)

Definition at line 74 of file read98721.c.

int display_flag = 0

Definition at line 38 of file read98721.c.

char* display_name = "/dev/crt"

Definition at line 42 of file read98721.c.

int driver_flag = 0

Definition at line 39 of file read98721.c.

char* driver_name = "hp98721"

Definition at line 43 of file read98721.c.

char* fname = ((void *)0)

Definition at line 71 of file read98721.c.

Referenced by Fail(), and main().

int fname_flag = 0

Definition at line 68 of file read98721.c.

int ncomments = 0

Definition at line 73 of file read98721.c.

int overlay_flag = 0

Definition at line 61 of file read98721.c.

int picture_fd

Definition at line 77 of file read98721.c.

Referenced by direct_setup().

int pos_flag = 0

Definition at line 45 of file read98721.c.

int size_flag = 0

Definition at line 53 of file read98721.c.

int xsize = 512

Definition at line 58 of file read98721.c.

int xstart = 0

Definition at line 50 of file read98721.c.

int ysize = 480

Definition at line 59 of file read98721.c.

int ystart = 0

Definition at line 51 of file read98721.c.