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Resource Library: Graphics
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graphics-16000.iso
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pcshow
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pcshow.c
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C/C++ Source or Header
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1991-07-01
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68KB
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1,927 lines
/*
*
* Raster image display program for the IBM PC
*
* This program takes HDF file images or binary images, one byte per pixel,
* and displays them on the PC's color graphics screen. The dimensions of the
* image are specified on the command line for the binary images, or are in the
* HDF file. Each image is read from the file, then displayed in the specified
* position on the screen. Portions of the image that do not fit on the screen
* are clipped.
*
* Command line options are as follows:
* -b xdim ydim : The dimensions of the binary file, and specifies
* binary file type of data
* -m mapfile : The name of a palette for a binary file
* -v : Sets VGA display mode
* -e : Sets EGA display mode (default)
* -9 : Sets Number 9 display mode
* -h : Specifies reading from an HDF file (default)
* -c : Center the image on the screen
* -p xwhere ywhere : Specify an x & y position for the upper left hand
* corner of the screen
* -a : Set animation mode
* -A : Set animation mode and specify animation of multiple
* images from only one hdf file
* -s : Specifies only one binary image and name is filename
* filename : The file containing a list of binary images or
* an HDF file containing images
* example use: display -b 256 256 -c -m palette.pal list.dat
* the file 'list.dat' must contain a list of file names of the images
* that are to be displayed in sequence.
*
* Note: for binary file usage, both the -b xdim ydim and the -m mapfile
* options must be used for the correct displaying of the image.
* The file name at the end of the command line is a mandatory command
* line parameter, the rest of the command line parameters are optional.
*
* The options available while an image is being displayed can be shown by
* typing '?'
*
* The rest of the external C functions can be found in "options.c"
*
* National Center for Supercomputing Applications, University of Illinois
* 153 Computing Applications Building
* 605 E. Springfield Ave.
* Champaign, IL 61820 (217)244-0072
*
* Quincey Koziol August 1988
*
*/
#include "show.h" /* include file for other include files and variables */
/* declarations of types for routines used */
extern long DFgetelement(); /* HDF call to get an element from a file */
extern long DFputelement(); /* HDF call to put an element in a file */
extern long unrleit(); /* call to un-run length encode a line of an image */
extern int DFsetfind(); /* HDF call to start a wildcard find operation */
extern int DFfind(); /* HDF call to perform the wildcard find */
extern int DFupdate(); /* HDF call to update a file after changes have been written */
extern int DFaccess(); /* HDF call to initiate reads or writes on a file */
extern int DFdup(); /* HDF call to create a new tag/ref indentical to an old one */
extern int DFclose(); /* HDF call to close an HDF file */
extern int expand(); /* routine to expand a given box in the image to fill the screen */
extern int interpolate(); /* routine to expand and smooth a given box in the image to fill the screen */
extern int getfnl();
#ifdef LATTICE
extern char *malloc(); /* memory allocation procedure */
extern char *calloc(); /* another memory allocation procedure */
#endif
#ifdef QAK
extern unsigned char pixelcolor(); /* returns the color of a pixel specified */
#endif
extern DF *DFopen(); /* HDF call to open a file and return a pointer to that file */
extern void unimcomp(); /* call to uncompress an imcomp compressed line */
extern void read_pic(); /* routine to read in an imcomp compressed HDF image in ega mode */
extern void readpic(); /* routine to read in a raster image from an HDF file */
extern void readcpic(); /* routine to read in a run-length-encoded image from an HDF file */
extern void readipic(); /* routine to read in an imcomp compressed HDF image for other display modes */
extern void loadega(); /* procedure to read in an HDF palette in ega mode */
extern void select_pal(); /* procedure to select a palette of 16 colors out of 256 */
extern void grafmode(); /* routine to go into the correct graphics mode */
extern void textmode(); /* routine to go into text mode */
extern void showpic(); /* routine to display the picture on the screen when in graphics mode */
extern void loadpal(); /* procedure to load the palette for other display modes */
extern void showpal(); /* routine to show the palette on the screen */
extern void nopal(); /* routine to remove the palette from the screen */
extern void options(); /* main routine to execute runtime options from */
extern void putpal(); /* routine reload the internal palette which the values from current palette arrays */
extern void findpal(); /* routine to get a new palette from an HDF file */
extern void newpal(); /* routine to get a new palette in binary mode */
extern void initpal(); /* procedure to load in the initial palette */
extern void rawpic(); /* call to read in the binary image */
extern void printdir(); /* routine to display a list of palettes in the current directory */
extern void swap(); /* swap two character values */
#ifdef QAK
extern void slidepal(); /* slide the palette left or right */
#endif
extern void squishpal(); /* compress or expand the palette */
#ifdef MOUSE
extern void mousefunc(); /* mouse functions for screen manipulation */
#endif
extern void updatescrn(); /* updates the screen with the image, color bar and mouse cursor */
/*void t16line();*/ /* blast a targa line out to the targa board */
/*void pline();*/
/*void GraphInit();*/ /* routine in 'tarinit.c' to initialize the targa board */
extern void makepal(); /* make a grey scale palette as the first palette */
extern void displayerr(); /* display a string on the text screen */
extern void usage(); /* display the command line parameters */
extern void debug(); /* display debugging variables */
extern void debugf(); /* display float debugging variables */
extern void waitq(); /* routine to wait for a keypress */
#ifdef QAK
extern void bounce(); /* routine to bounce a ball on the screen until keyboard or mouse status is changed */
#endif
extern void swapint(); /* routine to swap two integer values */
extern void parse(); /* parse the commands generated by options() */
extern void NO9setup(); /* number nine routines to initialize the screen */
extern void clrbuf();
extern void RG9gmode();
extern void RG9clrscr();
extern void RG9init();
extern void draw_mouse();
extern void erase_mouse();
extern void read_mouse();
extern void strsfn();
void main(argc,argv) /* main routine */
int argc; /* argument count */
char *argv[]; /* pointer to the argument list */
{
mode=EGA; /*default mode for displaying images */
maxx=640;
maxy=350;
pal_height=7;
if(argc<2){ /* if there are no command line parameters then print them */
usage();
exit(0);
} /* end if */
for (i=1; i<argc; i++) { /* look at each parm */
if (*argv[i]=='-') {
switch ( *(argv[i]+1)) {
case 'c': /* centering */
center=1; /* set centering to calculate after the dimensions have been found */
break;
case 'p': /* special position */
xwhere=atoi(argv[++i]);
ywhere=atoi(argv[++i]);
if (xwhere > maxx || ywhere > maxy) {
puts("Invalid position\n");
usage();
exit(1);
} /* end if */
break;
case 'h': /* the file type specified in HDF */
filetype='h';
break;
case 'a': /* set animation mode */
animate=1;
one_file=0;
break;
case 'A': /* set one file animation mode for hdf files */
animate=1;
one_file=1;
break;
case 's': /* set single binary image mode */
oneimage=1;
break;
case 'b': /* the files are going to be binary raster 8 */
filetype='b';
xdim=atoi(argv[++i]);
ydim=atoi(argv[++i]);
if (xdim < 1 || ydim < 1) {
puts("Invalid dimensions\n");
usage();
exit(1);
} /* end if */
break;
case VGA: /* display mode is vga */
mode=*(argv[i]+1);
maxx=320;
maxy=200;
pal_height=7;
break;
case EGA: /* display mode is ega */
mode=*(argv[i]+1);
maxx=640;
maxy=350;
pal_height=7;
break;
#ifdef FUTURE
case TARGA: /* display mode is t16 */
mode=*(argv[i]+1);
maxx=512;
maxy=485;
break;
#endif
case NO9: /* display mode is no9 */
mode=*(argv[i]+1);
maxx=512;
maxy=500;
pal_height=15;
break;
case 'm': /* name of palette file for binary images */
strcpy(palfile,argv[i+1]);
break;
default: /* not a valid command parameter, so tell them the parameters */
usage();
exit(1);
} /* end switch */
} /* end if */
} /* end for */
pal_yoff=0;
/* set the directory from the command */
getcwd(old_path,64); /* get the current directory */
old_drive=toupper(*old_path)-'A'+1; /* get the drive number of the old drive */
strcpy(old_path,old_path+2); /* insert the slash in front of the directory */
strsfn(argv[argc-1],drive,path,node,ext); /* convert the filename on the command line into a drive, path, node, and extension */
new_drive=toupper(*drive)-'A'+1;
if(new_drive>0)
_dos_setdrive(new_drive,&new_drive); /* change the current drive */
strcpy(filename,path);
if((i=strcmp(filename,""))!=0) { /* check for null directory */
if((i=chdir(filename))!=0) { /* set the directory and check for a bad directory */
printf("Bad Path Specified, Error=%d\n",i);
exit(1);
} /* end if */
} /* end if */
strcpy(argv[argc-1],node); /* make the filename again */
strcat(argv[argc-1],".");
strcat(argv[argc-1],ext);
/* start doing stuff with the image(s) */
if(animate) { /* do both hdf and raster animations here */
if(filetype==HDF) { /* do a hdf animation */
if(one_file==1) { /* animate all the images from just one hdf file */
grafmode(); /* go to correct graphics screen type and load palette */
do { /* cycle through until the user wants to get out */
strcpy(filename,argv[argc-1]); /* get a copy of the file to be read */
file_attr=0; /* just look for normal files */
file_err=find_1st(filename,file_attr); /* get the first file to display */
do { /* display all the files */
strcpy(filename,DTAPTR+30); /* get the filename from the find routine */
/* Open DF file for reading */
if(NULL==(dff=DFopen(filename,DFACC_ALL,16))) {
printf("Cannot open HDF file, HDF error:%d\n", DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
/* get the dimensions */
if(first_hdf==1) {
DFsetfind(dff,DFTG_ID8,DFREF_WILDCARD); /* set wildcard find to image dimension searching */
if(!DFfind(dff,&ddstr)) { /* look for image dimensions */
if(0>DFgetelement(dff,ddstr.tag,ddstr.ref,&dims)) {
printf("Error getting dimensions from file: %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
} /* end if */
else {
printf("error from DFfind %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end else */
xdim=intswap(dims.xdim);
ydim=intswap(dims.ydim);
if(center) { /* find the image's position on the screen */
xwhere=(maxx-xdim)/2;
ywhere=(maxy-ydim)/2;
if(xwhere<0)
xwhere=0; /* if larger than screen, */
if(ywhere<0) /* don't center it */
ywhere=0;
} /* end if */
/* allocate memory for the image, if not enough, then error */
if(enoughspace(xdim,ydim)) {
printf(mem_error);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
first_hdf=0; /* reset the first_hdf bit */
} /* end if */
/* cycle through all of the raster images in the file */
c=' ';
cycled=0;
DFsetfind(dff,DFTG_RI8,DFREF_WILDCARD); /* set wildcard search for raster 8 images */
while(!DFfind(dff,&ddstr) && animate && !getout) { /* look for the raster 8 images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readpic(xdim,ydim); /* block read from disk */
if(!cycled)
initpal(); /* loads in the palette from disk */
showpic(); /* put the picture on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
/* cycle through all of the run length compressed images in the file */
c=' ';
DFsetfind(dff,DFTG_CI8,DFREF_WILDCARD);
while(!DFfind(dff,&ddstr) && animate && !getout) {
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readcpic(xdim,ydim); /* block read run length compressed image from disk */
if(!cycled)
initpal(); /* loads in the palette from disk */
showpic(); /* put image on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
/* cycle through all of the imcomp compressed images in the file */
c=' ';
DFsetfind(dff,DFTG_II8,DFREF_WILDCARD); /* set wildcard search for imcomp compressed images */
while(!DFfind(dff,&ddstr) && animate && !getout) { /* look for imcomp compressed images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
if(!doneinit) { /* if the palette hasn't been initialized */
initpal(); /* then initialize it for incomp compressed images */
doneinit=1;
} /* end if */
if(mode==EGA) { /* initialize things a certain way for ega mode */
read_pic(xdim,ydim); /* block read from disk for ega mode */
select_pal(xdim,ydim,0); /* set up the translation table for ega */
memcpy(egapals[0],regrs,16);
} /* end if */
else
readipic(xdim,ydim); /* block read from disk for other modes */
showpic(); /* put the image on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
DFclose(dff); /* close the hdf file */
} while((file_err=findnext())==0); /* keep reading files until an error is returned (no more files) */
for(i=anispeed; i>0; i--); /* delay loop */
if(cycled) {
showpic();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} while(c!='q' && animate && cycled && !getout); /* keep cycling until the user wants out */
} /* end if */
else { /* animate from a list of hdf files */
grafmode(); /* go into correct graphics mode */
c=' ';
while(c!='q' && animate && !getout) { /* open file with list of file names to display */
if(NULL==(fp=fopen(argv[argc-1],"ra"))) {
textmode();
printf("\n%s: Error opening %s",argv[0],argv[argc-1]);
chdir(old_path); /* restore the old path */
exit(0);
} /* end if */
if(palmax==-1 && *palfile!=NULL) /* if there is a palette specified then load it */
newpal(palfile);
putpal();
/* cycle through all of the file names */
*filename='\0';
while((NULL!=fgets(filename,100,fp)) && animate && !getout) {
if(*filename<33)
break; /* exit the program if end of list */
p=filename;
while(*p>32) /* find the first non printable char or space */
p++;
*p='\0'; /* truncate the file name for use by open */
file_attr=0; /* just look for normal files */
file_err=find_1st(filename,file_attr); /* get the first file to display */
do { /* display all the files */
strcpy(filename,DTAPTR+30); /* get the filename from the find routine */
/* Open DF file for reading */
if(NULL==(dff=DFopen(filename,DFACC_ALL,16))) {
printf("Cannot open HDF file=%s, HDF error:%d\n",filename,DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
if(first_hdf==1) { /* the first time through an hdf animation, get the dimensions and allocate spcae, etc. */
/* get the dimensions */
DFsetfind(dff,DFTG_ID8,DFREF_WILDCARD); /* set wildcard find to image dimension searching */
if(!DFfind(dff,&ddstr)) { /* look for image dimensions */
if(0>DFgetelement(dff,ddstr.tag,ddstr.ref,&dims)) {
printf("Error getting dimensions from file: %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
} /* end if */
else {
printf("error from DFfind %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end else */
xdim=intswap(dims.xdim);
ydim=intswap(dims.ydim);
if(center) { /* find the image's position on the screen */
xwhere=(maxx-xdim)/2;
ywhere=(maxy-ydim)/2;
if(xwhere<0)
xwhere=0; /* if larger than screen, */
if(ywhere<0) /* don't center it */
ywhere=0;
} /* end if */
/* allocate memory for the image, if not enough, then error */
if(enoughspace(xdim,ydim)) {
printf(mem_error);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
first_hdf=0;
} /* end if */
/* cycle through all of the raster images in the file */
c=' ';
cycled=0;
DFsetfind(dff,DFTG_RI8,DFREF_WILDCARD); /* set wildcard search for raster 8 images */
while(!DFfind(dff,&ddstr) && animate && !getout) { /* look for the raster 8 images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readpic(xdim,ydim); /* block read from disk */
if(!cycled)
initpal(); /* loads in the palette from disk */
showpic(); /* put the picture on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
/* cycle through all of the run length compressed images in the file */
c=' ';
DFsetfind(dff,DFTG_CI8,DFREF_WILDCARD);
while(!DFfind(dff,&ddstr) && animate && !getout) {
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readcpic(xdim,ydim); /* block read run length compressed image from disk */
if(!cycled)
initpal(); /* loads in the palette from disk */
showpic(); /* put image on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
/* cycle through all of the imcomp compressed images in the file */
c=' ';
DFsetfind(dff,DFTG_II8,DFREF_WILDCARD); /* set wildcard search for imcomp compressed images */
while(!DFfind(dff,&ddstr) && animate && !getout) { /* look for imcomp compressed images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
if(!doneinit) { /* if the palette hasn't been initialized */
initpal(); /* then initialize it for incomp compressed images */
doneinit=1;
} /* end if */
if(mode==EGA) { /* initialize things a certain way for ega mode */
read_pic(xdim,ydim); /* block read from disk for ega mode */
select_pal(xdim,ydim,0); /* set up the translation table for ega */
memcpy(egapals[0],regrs,16);
} /* end if */
else
readipic(xdim,ydim); /* block read from disk for other modes */
showpic(); /* put the image on the screen */
cycled=1; /* set flag to display that an animation has occured */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
DFclose(dff); /* close the hdf file */
} while((file_err=findnext())==0); /* keep going until no more files with that name */
} /* end while */
for(i=anispeed; i>0; i--); /* delay loop */
if(cycled) {
showpic();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
} /* end while */
} /* end else */
} /* end if */
else { /* do a raster eight animation */
/* allocate memory for the image, if not enough, then error */
if(enoughspace(xdim,ydim)) {
printf(mem_error);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
if(center) { /* find the image's position on the screen */
xwhere=(maxx-xdim)/2;
ywhere=(maxy-ydim)/2;
if(xwhere<0)
xwhere=0; /* if larger than screen, */
if(ywhere<0) /* don't center it */
ywhere=0;
} /* end if */
grafmode(); /* go into correct graphics mode */
/* open file with list of file names to display */
if(one_file==1) { /* if there is only one file name specified for the animation */
c=' ';
while(c!='q' && animate && !getout) {
if(palmax==-1 && *palfile!=NULL) /* if there is a palette specified then load it */
newpal(palfile);
putpal();
/* cycle through all of the file names */
file_attr=0; /* look for normal files */
file_err=find_1st(argv[argc-1],file_attr); /* get the name of the first file which matches */
do {
strcpy(filename,DTAPTR+30);
if(0>(file=open(filename,O_RDONLY | O_RAW))) { /* open the image file */
textmode();
printf("\n%s: Error opening image file: %s",argv[0],filename);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
rawpic(file,xdim,ydim); /* block read image from from disk */
close(file); /* close the image file */
showpic(); /* put the image on the screen */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
for(i=anispeed; i>0; i--); /* delay loop */
} while((file_err=findnext())==0); /* keep cycling through the files until all the filenames are exhausted */
showpic();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options(); /* do the fancy things on the screen */
} /* end while */
} /* end if */
else { /* animate from a file of filenames */
c=' ';
while(c!='q' && animate && !getout) {
if(NULL==(fp=fopen(argv[argc-1],"ra"))) {
printf("\n%s: Error opening %s",argv[0],argv[argc-1]);
chdir(old_path); /* restore the old path */
exit(0);
} /* end if */
if(palmax==-1 && *palfile!=NULL) /* if there is a palette specified then load it */
newpal(palfile);
putpal();
/* cycle through all of the file names */
*filename='\0';
while((NULL!=fgets(filename,100,fp)) && animate && !getout) {
if(*filename<33)
break; /* exit the program if end of list */
p=filename;
while(*p>32) /* find the first non printable char or space */
p++;
*p='\0'; /* truncate the file name for use by open */
file_attr=0; /* look for normal files */
file_err=find_1st(filename,file_attr); /* get the name of the first file which matches */
do {
strcpy(filename,DTAPTR+30);
if(0>(file=open(filename,O_RDONLY | O_RAW))) { /* open the image file */
textmode();
printf("\n%s: Error opening image file: %s",argv[0],filename);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
rawpic(file,xdim,ydim); /* block read image from from disk */
close(file); /* close the image file */
showpic(); /* put the image on the screen */
if(kbhit()) { /* check for keypress to interupt animation */
i=getch(); /* flush the keyboard buffer */
if(i==0) /* get extended code if necessary */
i=getch();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options();
} /* end if */
for(i=anispeed; i>0; i--); /* delay loop */
} while((file_err=findnext())==0); /* keep cycling through the files until all the filenames are exhausted */
} /* end while */
showpic();
if(show) /* if palette is supposed to be display then display it again */
showpal();
options(); /* do the fancy things on the screen */
} /* end while */
} /* end else */
} /* end else */
} /* end if */
else { /* regular non-animation file loading */
if(filetype==HDF) { /* hdf files specified */
/* Open DF file for reading */
if(NULL==(dff=DFopen(argv[argc-1],DFACC_ALL,16))) {
printf("Cannot open HDF file, HDF error:%d\n", DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
/* get the dimensions */
DFsetfind(dff,DFTG_ID8,DFREF_WILDCARD); /* set wildcard find to image dimension searching */
if(!DFfind(dff,&ddstr)) { /* look for image dimensions */
if(0>DFgetelement(dff,ddstr.tag,ddstr.ref,&dims)) {
printf("Error getting dimensions from file: %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
} /* end if */
else{
printf("error from DFfind %d\n",DFerror);
chdir(old_path); /* restore the old path */
exit(1);
} /* end else */
xdim=intswap(dims.xdim);
ydim=intswap(dims.ydim);
if(center) { /* find the image's position on the screen */
xwhere=(maxx-xdim)/2;
ywhere=(maxy-ydim)/2;
if(xwhere<0)
xwhere=0; /* if larger than screen, */
if(ywhere<0) /* don't center it */
ywhere=0;
} /* end if */
/* allocate memory for the image, if not enough, then error */
if(enoughspace(xdim,ydim)) {
printf(mem_error);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
grafmode(); /* go to correct graphics screen type and load palette */
/* cycle through all of the raster images in the file */
DFsetfind(dff,DFTG_RI8,DFREF_WILDCARD); /* set wildcard search for raster 8 images */
while(!DFfind(dff,&ddstr) && !getout) { /* look for the raster 8 images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readpic(xdim,ydim); /* block read from disk */
initpal(); /* loads in the palette from disk */
showpic(); /* put the picture on the screen */
if(show) /* if palette is supposed to be display then display it again */
showpal();
options(); /* call routine for screen options */
} /* end while */
/* cycle through all of the run length compressed images in the file */
DFsetfind( dff, DFTG_CI8, DFREF_WILDCARD);
while(!DFfind( dff, &ddstr) && !getout) {
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
readcpic(xdim,ydim); /* block read run length compressed image from disk */
initpal(); /* loads in the palette from disk */
showpic(); /* put image on the screen */
if(show) /* if palette is supposed to be display then display it again */
showpal();
options(); /* call routine for screen options */
} /* end while */
/* cycle through all of the imcomp compressed images in the file */
DFsetfind(dff,DFTG_II8,DFREF_WILDCARD); /* set wildcard search for imcomp compressed images */
while(!DFfind(dff,&ddstr) && !getout) { /* look for imcomp compressed images */
imtag=ddstr.tag; /* keep track of the image's tag and reference numbers for later */
imref=ddstr.ref;
initpal(); /* neccessary for imcomp compressed images */
if(mode==EGA){ /* initialize things a certain way for ega mode */
read_pic(xdim,ydim); /* block read from disk for ega mode */
select_pal(xdim,ydim,0); /* set up the translation table for ega */
memcpy(egapals[0],regrs,16);
} /* end if */
else
readipic(xdim,ydim); /* block read from disk for other modes */
showpic(); /* put the image on the screen */
if(show) /* if palette is supposed to be display then display it again */
showpal();
options(); /* call routine for screen options */
} /* end while */
DFclose(dff); /* close the hdf file */
} /* end if */
else { /* do raster images */
/* allocate memory for the image, if not enough, then error */
if(enoughspace(xdim,ydim)) {
printf(mem_error);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
if(center) { /* find the image's position on the screen */
xwhere=(maxx-xdim)/2;
ywhere=(maxy-ydim)/2;
if(xwhere<0)
xwhere=0; /* if larger than screen, */
if(ywhere<0) /* don't center it */
ywhere=0;
} /* end if */
/* open file with list of file names to display */
if(oneimage) { /* only read in one image and display it */
if(0>(file=open(argv[argc-1],O_RDONLY|O_RAW))) { /* open the image file */
printf("\n%s: Error opening image file: %s",argv[0],argv[argc-1]);
chdir(old_path); /* restore the old path */
exit(0);
} /* end if */
rawpic(file,xdim,ydim); /* block read image from from disk */
close(file); /* close the image file */
grafmode(); /* go into correct graphics mode */
newpal(palfile); /* load the new palette */
putpal();
showpic(); /* put the image on the screen */
options(); /* do the fancy things on the screen */
} /* end if */
else { /* read in a list of image names to display */
if(NULL==(fp=fopen(argv[argc-1],"ra"))) {
printf("\n%s: Error opening %s",argv[0],argv[argc-1]);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
/* cycle through all of the file names */
*filename='\0';
while(NULL!=fgets(filename,100,fp) && !getout) {
if(*filename<33)
break; /* exit the program if end of list */
p=filename;
while(*p>32) /* find the first non printable char or space */
p++;
*p='\0'; /* truncate the file name for use by open */
if(0>(file=open(filename,O_RDONLY|O_RAW))) { /* open the image file */
textmode();
printf("\n%s: Error opening image file: %s",argv[0],filename);
chdir(old_path); /* restore the old path */
exit(1);
} /* end if */
rawpic(file,xdim,ydim); /* block read image from from disk */
close(file); /* close the image file */
grafmode(); /* go into correct graphics mode */
if(palmax==-1 && *palfile!=NULL) /* if there is a palette specified then load it */
newpal(palfile);
putpal();
showpic(); /* put the image on the screen */
options(); /* do the fancy things on the screen */
/*
* insert each image functions here(click or gwrite)
*/
/* gwrite(filename); */
} /* end while */
} /* end else */
} /* end else */
} /* end else */
textmode();
chdir(old_path); /* restore the old path */
_dos_setdrive(old_drive,&old_drive); /* and drive */
} /* end main */
/**********************************************************************
* Function : enoughspace
* Purpose : make enough room for the maximum row and column size.
* Image memory is allocated line by line because of 64k data
* limitation of the PC.
* Parameters :
* c - the number of columns in the image
* l - the number of lines in the image
* Returns :
* 1 if not enough memory
* 0 if enough memory
* Calls : max()
* Called by : main()
**********************************************************************/
int enoughspace(c,l)
int l, /* the number of lines in image */
c; /* the number of columns in the image */
{
int i; /* local counting variable */
for (i=0; i < l; i++) { /* allocate each line separately */
store[i]=malloc(max(c,256)); /* with a minimum of 256 pixels per line allocated */
if (store[i]==NULL) /* malloc returned not enough */
return(1);
} /* end for */
return(0); /* successful return */
} /* end enoughspace() */
/**********************************************************************
* Function : rawpic
* Purpose : block read the binary image from disk and copy to main memory
* storage.
* Parameters :
* file - the file pointer
* len - the length of a line (xdim)
* lines - the number of lines (ydim)
* Returns : none
* Calls : none
* Called by : main()
**********************************************************************/
void rawpic(file,len,lines)
int file, /* the file pointer */
len, /* the length of a line of the binary image */
lines; /* the number of lines in the image */
{
int i, /* local temporary counting variable */
lno, /* the current line number */
readsize, /* the size to block read */
readfact; /* the block reading factor */
char *p; /* pointer to the buffer */
readfact=RAWSIZE/len-5;
readsize=readfact*len; /* get good blocking factor */
lno=0;
do {
read(file,raw,readsize); /* read one block */
p=raw; /* point to that block */
/*
* for this block, copy each line into it's own reserved memory
*/
for (i=0; i < readfact && lno < lines; i++) {
memcpy(store[lno++],p,len);
p += len;
} /* end for */
} while (lno < lines);
} /* end rawpic() */
/**********************************************************************
* Function : readpic
* Purpose : block read the image from the HDf file into main memory
* storage
* Parameters :
* len - the length of a line (xdim)
* lines - the number of lines (ydim)
* Returns : none
* Calls : DFaccess(), DFread()
* Called by : main()
**********************************************************************/
void readpic(len,lines)
int len, /* the length of a line */
lines; /* the number of lines */
{
int i,j, /* local temporary counting variable */
lno, /* the current line number */
readsize, /* the size to block read */
readfact; /* the block reading factor */
char *p; /* pointer to the buffer */
/* prime DF routines */
DFaccess( dff, ddstr.tag, ddstr.ref, "r"); /* tell HDF to start reading */
readfact=RAWSIZE/len - 5;
readsize= readfact*len; /* get good blocking factor */
lno=0;
do {
j=(int) DFread(dff,raw,(long)readsize); /* read one block */
p=raw; /* point to that block */
/* for this block, copy each line into it's own reserved memory */
for (i=0; i*len < j && lno < lines; i++) {
memcpy(store[lno++],p,len);
p += len;
} /* end for */
} while (lno < lines);
} /* end readpic() */
/**********************************************************************
* Function : readcpic
* Purpose : bloack read a run-length compressed image from an HDF
* file and store it in main memory, doing run length
* decompression as it goes
* Parameters :
* len - the length of a line of the image (xdim)
* lines - the number of lines in the image (ydim)
* Returns : none
* Calls : DFaccess(),DFread(),unrleit()
* Called by : main()
**********************************************************************/
void readcpic(len,lines)
int len, /* the length of a line */
lines; /* the number of lines */
{
int i; /* temporary counting variable */
long n, /* the number of bytes read into the buffer */
bufleft, /* the number of bytes left in the buffer */
crowsize, /* the maximum compressed row size */
readsize, /* the size of the block to read in */
totalread; /* also the number of bytes read into the buffer */
unsigned char *in; /* pointer to the buffer for data */
/* prime DF routines */
DFaccess( dff, ddstr.tag, ddstr.ref, "r"); /* set HDF to begin reading */
readsize=RAWSIZE - 16;
in=raw;
n=DFread(dff, in,readsize); /* block read in data from HDF file */
totalread=n;
crowsize=(long)xdim*121/120 +1; /* maximum rowsize of compressed data */
bufleft=n;
for (i=0; i<ydim; i++) { /* uncompress until end of file or buffer */
n=unrleit(in, store[i], (long) xdim);
in += n;
bufleft -= n;
if (bufleft<crowsize) { /* if row is chopped then read more in */
memcpy(raw, in, bufleft);
in=raw;
n=DFread(dff,&in[bufleft],readsize-bufleft);
totalread += n;
bufleft += n;
} /* end if */
} /* end for */
} /* end readcpic() */
/**********************************************************************
* Function : readipic
* Purpose : block read in HDF image and do imcomp decompression as
* it goes
* Parameters :
* len - the length of a line (xdim)
* lines - the number of lines in image (ydim)
* Returns : none
* Calls : DFaccess(), DFread(), unimcomp(), memcpy()
* Called by : main()
**********************************************************************/
void readipic(len,lines)
int len, /* the length of a line of the image */
lines; /* the number of lines in the image */
{
int i, /* local temporary counting variable */
lno, /* the current line number */
readsize, /* the size to block read */
readline, /* the block reading factor */
itread; /* the number of bytes read in */
char *p, /* pointer to the buffer */
*endp; /* pointer to the end of the buffer */
/* prime DF routines */
DFaccess( dff, ddstr.tag, ddstr.ref, "r");
readline=RAWSIZE /xdim -5;
readsize=readline*xdim;
lno=0;
do {
itread=DFread(dff,raw,(long)readsize); /* block read in imcomp compressed image */
p=raw;
endp=raw + itread;
/* take each imcomp compressed line and uncompress it */
while(p<endp && lno<(ydim/4)){
unimcomp(xdim,1,p,bigstore);
for (i=0;i<4 ;i++)
memcpy(store[lno*4+i],&bigstore[i*xdim],xdim);
p += xdim;
lno++;
} /* end while */
} while (lno<(ydim/4));
} /* end readipic() */
/**********************************************************************
* Function : read_pic
* Purpose : Reads in the raw image in big blocks from an HDF file
* Performs decompression and store it in array 'store'
* Parameters :
* xdim,ydim - x and y dimension of image
* Returns : none
* Calls : DFaccess(), DFread(), unimcomp(), choose_rgb()
* Called by : main()
**********************************************************************/
void read_pic(xdim,ydim)
int xdim, ydim; /* x & y dimensions of the image to be read in */
{
int i,j,k,cnt, /* more local counting variables */
readline, /* the number of lines the storage array can hold */
readsize, /* the size of the block to be read in */
nlines; /* the current line count into the image */
char *p; /* character pointer to the beginning of the array read in */
unsigned char *out, /* character pointer to the unimcomp compressed lines */
color; /* color value for a pixel */
void unimcomp(); /* routine to uncompress imcomp line compression */
int choose_rgb(); /* routine to get 6 bit color values from 24 bit palettes */
for (j=0; j<64; j++) /* clear out the frequency count array */
count[j]=0;
/* read in image */
DFaccess( dff, ddstr.tag, ddstr.ref, "r");
readline=RAWSIZE / xdim - 5;
readsize=readline * xdim;
out=(unsigned char *)malloc(4*xdim);
nlines=0;
do {
cnt=DFread(dff,raw,(long)readsize); /* get a chunk of the image */
/* count the frequency of colors */
for (i=0; i<cnt; i=i+4)
for (j=HI; j<=LO; j++) {
color=raw[i+j];
k=3 * color;
count[choose_rgb(pal[k],pal[k+1],pal[k+2])]++; /* get the correct color setting and increment it */
} /* end of for j */
/* decompress the raw image */
for (j=0; j<readline; j++) {
unimcomp(xdim,1,&(raw[xdim*j]),out); /* uncompress each compressed line into four normal lines */
p=out;
for (i=0; i< 4 && nlines < ydim; i++) { /* copy the four lines into memory */
memcpy(store[nlines],p,xdim);
nlines++;
p=p + xdim;
} /* end of for i */
} /* end of for j */
} while (nlines < ydim);
} /* end of read_pic() */
/**********************************************************************
* Function : palloc
* Purpose : allocate room in dynamic memory for a 256 byte palette
* Parameters :
* x - the number of the palette to try to allocate
* Returns :
* 1 if a palette was allocated
* 0 if no memory
* Calls : none
* Called by : loadpal(), findpal(), newpal()
**********************************************************************/
int palloc(x)
int x; /* the number of the palette to try to allocate */
{
if(x<16){ /* the legal number of palettes in memory */
rpal[x]=malloc(256);
gpal[x]=malloc(256);
bpal[x]=malloc(256);
if (rpal[x]==NULL || gpal[x]==NULL || bpal[x]==NULL) /* if any of the palettes were not able to be allocated then return 0 */
return(0);
else{ /* otherwise, copy in the current palette */
memcpy(rpal[x],rmap,256);
memcpy(gpal[x],gmap,256);
memcpy(bpal[x],bmap,256);
return(1);
} /* end else */
} /* end if */
else
return(0); /* if too many palettes then return 0 */
} /* end palloc() */
/**********************************************************************
* Function : palloce
* Purpose : allocate room for an ega palette and copy the current
* one into that memory
* Parameters :
* x - the number of the palette to allocate memory for
* Returns :
* 1 if the memory was allocated ok
* 0 if the memory was not available
* Calls : none
* Called by : loadega(), findpal(), newpal()
**********************************************************************/
int palloce(x)
int x; /* the number of the palette to be allocated */
{
if(x<16){ /* if it is a legal palette value */
egapals[x]=malloc(16);
if (egapals[x]==NULL) /* if no memory available, then return 0 */
return(0);
else{ /* otherwise, return 1 and copy the palette into the new memory */
memcpy(egapals[x],regrs,16);
return(1);
} /* end else */
} /* end if */
else
return(0); /* return 0 if too many palettes */
} /* end palloce() */
/**********************************************************************
* Function : loadpal
* Purpose : load in a palette from an HDF file and set the vga or
* no. 9 palette to it.
* Parameters : none
* Returns : none
* Calls : DFsetfind(), DFfind, DFgetelement(), palloc(), putmap9(),
* putmapv()
* Called by : initpal()
**********************************************************************/
void loadpal()
{
int i; /* local counting variable */
char *pi; /* pointer to the chracter array read in */
if(DFgetelement( dff, DFTG_IP8, imref, pal)<0) { /* get palette associated with the image */
if(DFgetelement(dff,DFTG_LUT,imref,pal)<0) { /* try an alternate way of getting the palette */
for (i=0; i<256; i++) {
rmap[i]=i;
gmap[i]=i;
bmap[i]=i;
} /* end for */
return;
} /* end if */
} /* end if */
pi=pal;
for (i=0; i<256; i++) {
rmap[i]=*pi++;
gmap[i]=*pi++;
bmap[i]=*pi++;
} /* end for */
palnum=0;
palmax=0;
if(!palloc(palmax)) { /* allocate room for another palette */
palmax=-1; /* bad allocation */
displayerr("No Room For Another Palette");
} /* end if */
else /* ok allocation for palette */
switch (mode) { /* switch routine to put the correct palette */
case VGA:
putmapv(&rmap[0],&gmap[0],&bmap[0]);
break;
case NO9:
putmap9(&rmap[0],&gmap[0],&bmap[0]);
break;
} /* end switch */
} /* end loadpal() */
/**********************************************************************
* Function : loadega
* Purpose : load in the ega palette from an HDF file
* Parameters : none
* Returns : none
* Calls : DFsetfind(), DFfind(), DFgetelement(), select_pal(),
* palloce()
* Called by : initpal()
**********************************************************************/
void loadega()
{
int i; /* local counting variable */
if(DFgetelement( dff, DFTG_IP8, imref, pal)<0) { /* get palette associated with the image */
if(DFgetelement(dff,DFTG_LUT,imref,pal)<0) { /* try an alternate way of getting the palette */
for (i=0; i<256; i++) {
rmap[i]=i;
gmap[i]=i;
bmap[i]=i;
} /* end for */
return;
} /* end if */
} /* end if */
palnum=0;
palmax=0;
select_pal(xdim,ydim,1); /* perform a frequency count on it */
if(!palloce(palmax)) { /* allocate room for the first palette */
palmax=-1;
displayerr("No Room For Another Palette");
} /* end if */
else
for(i=0; i<16; i++)
egapal(i,(int)regrs[i]);
} /* end loadega() */
/**********************************************************************
* Function : unrleit
* Purpose : decompress run length encoding of a line of an image
* Parameters :
* buf - the character string to be unencoded
* bufto - the character string to be unencoded into
* outlen - the length of the final, unencoded string
* Returns : the length of the encoded line
* Calls : none
* Called by : readcpic()
**********************************************************************/
long unrleit(buf,bufto,outlen)
long outlen; /* the long value of the final unencoded line length */
unsigned char *buf,*bufto; /* the character pointers to the initial and final character buffers */
{
register int cnt;
register unsigned char *p,*q;
unsigned char *endp;
static unsigned char save[255], *savestart=NULL, *saveend=NULL;
/* save has a list of decompressed bytes not returned in
previous call. savestart and saveend specify the position
at which this list starts and ends in the array save */
p=buf;
endp=bufto+outlen;
q=bufto;
while((saveend>savestart) && (q<endp)) /* copy saved stuff */
*q++=*savestart++;
if(savestart>=saveend)
savestart=saveend=save; /* all copied */
while(q<endp) {
cnt=*p++; /* count field */
if(!(cnt&128)) /* is set of uniques */
while(cnt--)
if(q<endp)
*q++=*p++; /* copy unmodified */
else
*saveend++=*p++;
else {
cnt&=127; /* strip high bit */
while(cnt--)
if(q<endp)
*q++=*p; /* copy unmodified */
else
*saveend++=*p;
p++; /* skip that character */
} /* end else */
} /* end while */
return((long)(p-buf));
} /* end unrleit() */
/************************************************************************
* Function : unimcomp
* Purpose : 'Decompresses' the compressed image
* Parameter :
* xdim - x dimensions of image
* lines - number of lines of compressed image
* in, out - Input buffer and output buffer. Size of input buffer
* is xdim*lines. Size of output buffer is 4 times
* that. It 'restores' images into seq-type files
* Returns : none
* Called by : readipic(), read_pic()
* Calls : none
************************************************************************/
void unimcomp(xdim,lines,in,out)
int xdim, /* width of the image */
lines; /* number of lines of the compressed image */
unsigned char in[], /* input buffer */
out[]; /* output buffer (4 times as large as the input buffer) */
{
int bitmap, /* integer value of two side-by-side pixels */
temp; /* temporary var. to hold working stuff */
int i, j, k, /* local counting variables */
x, y; /* counting variables for the x & y coor. of the image */
unsigned char hi_color, /* value of the highest color */
lo_color; /* value of the lowest color */
/* go over the compressed image */
for (y=0; y<lines; y++)
for (x=0; x<xdim; x=x+4) {
k=y*xdim + x;
hi_color=in[k+2];
lo_color=in[k+3];
bitmap=(in[k] << 8) | in[k+1];
/* store in the out buffer */
for (i=(y*4); i<(y*4+4); i++) {
temp=bitmap >> (3 + y*4 - i)*4;
for (j=x; j<(x+4); j++) {
if ((temp & 8)==8)
out[i*xdim+j]=hi_color;
else
out[i*xdim+j]=lo_color;
temp=temp << 1;
} /* end of for j */
} /* end of for i */
} /* end of for x */
} /* end of unimcomp() */
/************************************************************************
* Function : select_pal
* Purpose : Selects a palette of 16 colors out of 256 colors.
* Each of the 256 original colors are 24 bit-rgb values
* The routine truncates the 24 bit values to 6 bits and
* selects the most popular 16 colors
* Parameters :
* xdim,ydim - x and y dimension of image
* mode - '1' implies program will count the frequency of colors
* '0' implies the frequency count has alreay been done
* Returns : none
* Called By : showega()
* Calls : choose_rgb(), map()
************************************************************************/
void select_pal(xdim,ydim,mode)
int xdim,ydim, /* x & y dimensions */
mode; /* whether or not to perform frequency count */
{
int i,j,k, /* local counting variables */
x,y, /* variables for x & y dimensions */
indx; /* index to the current maximum value in the frequency table */
long maxfreq; /* the current highest frequency */
unsigned char color; /* the color of a pixel */
int choose_rgb(); /* routine to choose a corresponding color from a mixture of red, green, and blue palettes */
int map(); /* routine to map from 16 colors into the 256 color vga table */
/* count the frequency of each color used */
textmode();
printf("Performing Frequency Count on The Image Data, Please be Patient\n");
if (mode==1) { /* if mode!=1 then count has already been performed, so no need to do it again */
for (i=0; i<64; i++) /* clear out the count array */
count[i]=0;
for (y=0; y<ydim; y++)
for (x=0; x<xdim; x++) {
color=store[y][x];
j=3 * color;
k=choose_rgb(pal[j],pal[j+1],pal[j+2]);
count[k]++;
} /* end of for x */
} /* end of if mode==1 */
/* select the 16 most frequently used colors */
for (i=0; i<16; i++) {
maxfreq=count[0];
indx=0;
for (j=1; j<64; j++)
if (maxfreq < count[j]) {
maxfreq=count[j];
indx=j;
} /* end of for j */
count[indx]=0;
regrs[i]=indx;
egapal(i,indx);
} /* end of for i */
/* set up translation table */
for (i=0; i<768; i=i+3) {
j=choose_rgb(pal[i],pal[i+1],pal[i+2]);
trans[i/3]=map(regrs,j);
} /* end of for i */
grafmode();
} /* end of select_pal() */
/************************************************************************
* Function : map
* Purpose : Maps a 6 bit rgb value to one of the 16 colors chosen
* Selects the one with the least bit difference
* Parameters :
* regrs - stores the 16 colors chosen
* color - the color to be mapped
* Returns : register with nearest color
* Called By : select_pal()
* Calls : none
************************************************************************/
int map(regrs,color)
char regrs[16]; /* array of the current ega palette values */
int color; /* the color to map into the large 256 color palette */
{
int i,j, /* counting variables */
minval, /* the smallest value in the 256 color palette which correspond to the color chosen */
temp, /* temporary variable */
diff, /* the amount of difference between a color and the ega palette value */
reg; /* the register number of the ega palette which is closest to the color wanted */
minval=999;
for (i=0; i<16; i++) { /* check through all the registers in the ega palette */
diff=0;
temp=1;
for (j=0; j<6; j++) { /* check through all the bits in the color */
if ((temp & color) != (regrs[i] & temp)) /* if the bits don't match then increment the difference variable */
diff++;
temp=temp * 2;
} /* end for j */
if (minval > diff) {
reg=i;
minval=diff;
} /* end if */
} /* end for i */
return reg; /* return the corresponding register value to the color given */
} /* end of map() */
/************************************************************************
* Function : choose_rgb
* Purpose : Selects a 6 bit rgb value for a 24 bit number. Takes
* the 2 most sign. bit of each 8 bit component
* Parameters :
* r,g,b - rgb components
* Returns : 6 bit rgb value
* Called By : select_pal()
* Calls : none
************************************************************************/
int choose_rgb(r,g,b)
int r,g,b; /* red, green, and blue components for the 24 bit value */
{
int color; /* 6 bit color value */
color=((r & 128) >> 5) | ((r & 64) >> 1) |
((g & 128) >> 6) | ((g & 64) >> 2) |
((b & 128) >> 7) | ((b & 64) >> 3);
return color; /* return the 6 bit color value */
} /* end choose_rgb() */
/**********************************************************************
* Function : newpal
* Purpose : read a new palette from a binary file and switch to it
* Parameters :
* s - name of a file
* Returns : none
* Calls : palloc(), palloce(), select_pal()
* Called by : main(), options()
**********************************************************************/
void newpal(s)
char *s; /* pointer to a file name */
{
FILE *fp; /* file pointer for the palette */
if (NULL==(fp=fopen(s,"rb"))) /* open the palette file */
makepal();
else { /* read in the palettes */
fread(rmap,1,256,fp);
fread(gmap,1,256,fp);
fread(bmap,1,256,fp);
fclose(fp);
/* attempt to allocate room for the palette and switch to it */
palmax++;
if(mode!=EGA) {
if(!palloc(palmax)) { /*allocate the new palette memory */
palmax--; /* bad allocation, fix old palette */
displayerr("No Room For Another Palette");
memcpy(rmap,rpal[palnum],256);
memcpy(gmap,gpal[palnum],256);
memcpy(bmap,bpal[palnum],256);
} /* end if */
else
palnum=palmax; /* good allocation, set palnum to new palette */
} /* end if */
else {
for(i=0; i<256; i++) { /* put individual palettes into the big one */
pal[i*3]=rmap[i];
pal[i*3+1]=gmap[i];
pal[i*3+2]=bmap[i];
} /* end for */
select_pal(xdim,ydim,1); /* do a frequency count on it */
if(!palloce(palmax)) {
displayerr("No Room For Another Palette");
palmax--;
memcpy(regrs,egapals[palnum],16);
} /* end if */
else
palnum=palmax;
} /* end else */
} /* end else */
} /* end newpal() */
/**********************************************************************
* Function : textmode
* Purpose : switch into text mode
* Parameters : none
* Returns : none
* Calls : resetega(), vgamode(3)
* Called by : main(), options()
**********************************************************************/
void textmode()
{
switch(mode){ /* depending on the monitor type, switch to text display mode */
case VGA:
vgamode(3);
break;
case NO9:
vgamode(3);
break;
case EGA:
default:
resetega();
break;
} /* end switch */
} /* end textmode() */
/**********************************************************************
* Function : grafmode
* Purpose : switch into correct graphics mode
* Parameters : none
* Returns : none
* Calls : vgamode(), initega(), putpal()
* Called by : main(), options()
**********************************************************************/
void grafmode()
{
switch (mode){ /* depending on the monitor type, switch to graphics display mode */
case VGA:
vgamode(19);
break;
/*
case TARGA:
GraphInit(16);
break;
*/
case NO9:
RG9clrscr();
break;
case EGA:
default:
vgamode(16);
#ifdef QAK
initega();
#endif
break;
} /* end switch */
putpal(); /* replace the palette */
} /* end grafmode() */
/**********************************************************************
* Function : putpal
* Purpose : renew the palette on the graphics card with the current
* palette in memory
* Parameters : none
* Returns : none
* Calls : putmapv(), putmap9(), egapal(),
* Called by : grafmode(), options()
**********************************************************************/
void putpal()
{
switch (mode){ /* different calls for different monitor types */
case VGA:
putmapv(rmap,gmap,bmap);
break;
case NO9:
putmap9(rmap,gmap,bmap);
break;
case EGA:
default:
for(i=0; i<16; i++)
egapal(i,(int)regrs[i]);
settrans(trans);
break;
} /* end switch */
} /* end putpal() */
/**********************************************************************
* Function : showpic
* Purpose : display the current portion of the image
* Parameters : none
* Returns : none
* Calls : vgaline(), egaline(), no9line()
* Called by : main(), options()
**********************************************************************/
void showpic()
{
switch(mode){ /* output to screen differently for each different type of monitor */
case VGA:
for(i=0; (i+ywhere)<ydim && (i+ywhere)<200; i++)
LINEVGA;
break;
case NO9:
for(i=0; (i+ywhere)<ydim && (i+ywhere)<500; i++)
LINENO9;
break;
/*
case TARGA:
for(i=0; (i+ywhere)<ydim && (i+ywhere)<500; i++)
LINET16;
break;
*/
case EGA:
default:
for (i=0; (i+ywhere)<ydim && (i+ywhere)<350; i++) /* display the image */
LINEEGA;
break;
} /* end switch */
} /* end showpic() */
/**********************************************************************
* Function : initpal
* Purpose : to load in the first palette for the image
* Parameters : none
** Returns : none
* Calls : loadpal(), loadega()
* Called by : main()
**********************************************************************/
void initpal()
{
switch(mode){ /* VGA and No9 use 256 byte palettes and EGA uses 16 byte palettes */
case VGA:
case NO9:
loadpal();
break;
case TARGA:
loadpal();
break;
case EGA:
default:
loadega();
break;
} /* end switch(mode) */
} /* end initpal() */
/**********************************************************************
* Function : makepal
* Purpose : make a grey scale palette as the first palette
* Parameters : none
* Returns : none
* Calls : select_pal(), palloc(), palloce(), putpal9(), putpalv(),
* memcpy()
* Called by : newpal()
**********************************************************************/
void makepal()
{
if(mode!=EGA) { /* for vga and no9 palettes */
for (i=0; i<256; i++) /* make a grey scale palette */
rmap[i]=gmap[i]=bmap[i]=i;
palnum=0;
palmax=0;
if(!palloc(palmax)) { /* allocate room for another palette */
palmax=-1;
displayerr("No Room For Another Palette");
} /* end if */
else /* load the grey scale data into the arrays */
switch (mode) { /* switch routine to put the correct palette */
case VGA:
putmapv(&rmap[0],&gmap[0],&bmap[0]);
break;
case NO9:
putmap9(&rmap[0],&gmap[0],&bmap[0]);
break;
} /* end switch */
} /* end if */
else { /* for ega palettes */
for(i=0; i<256; i++) /* make an ega grey scale big palette */
pal[i*3]=pal[i*3+1]=pal[i*3+2]=i;
palnum=0;
palmax=0;
select_pal(xdim,ydim,1); /* perform a frequency count on it */
if(!palloce(palmax)) { /* allocate room for the first palette */
palmax=-1;
displayerr("No Room For Another Palette");
} /* end if */
else
for(i=0; i<16; i++)
egapal(i,(int)regrs[i]);
} /* end else */
if(palmax==-1) /* grey scale not loaded properly */
displayerr("Palette Not Specified, No Room For Any Palettes");
else /* successful grey scale load */
displayerr("Palette Not Specified, Grey Scale Palette Loaded");
} /* end makepal() */
/**********************************************************************
* Function : displayerr
* Purpose : display a string in textmode, wait for keypress and
* to graphics mode
* Parameters :
* errstr - the string to be displayed on the screen
* Returns : none
* Calls : textmode, updatescrn()
* Called by : everywhere...
**********************************************************************/
void displayerr(errstr)
char *errstr;
{
if(mouse && mode==NO9)
makecur9(mx,my);
textmode();
printf("%s\n",errstr);
printf("Hit any key to continue\n");
waitq();
grafmode();
updatescrn();
} /* end displayerr() */
/**********************************************************************
* Function : debug
* Purpose : print debugging variables
* Parameters :
* s1,s2,s3,s4 - names of variables printed
* d1,d2,d3,d4 - variables to print
* Returns : none
* Calls : none
* Called by : anywhere...
**********************************************************************/
void debug(s1,d1,s2,d2,s3,d3,s4,d4)
char *s1,*s2,*s3,*s4;
int d1,d2,d3,d4; /* variables to display */
{
if(mouse && mode==NO9)
makecur9(mx,my);
textmode();
printf("%s=%d\n",s1,d1);
printf("%s=%d\n",s2,d2);
printf("%s=%d\n",s3,d3);
printf("%s=%d\n",s4,d4);
printf("Hit any key to continue\n");
waitq();
grafmode();
updatescrn();
} /* end debug() */
/**********************************************************************
* Function : usage
* Purpose : print the command line parameters
* Parameters : none
* Returns : none
* Calls : none
* Called by : main()
**********************************************************************/
void usage()
{
printf("Command line options are as follows:\n");
printf("\t-b xdim ydim\t: The dimensions of the binary file, and specifies\n");
printf("\t\t\tbinary file type of data\n");
printf("\t-m mapfile\t: The name of a palette for a binary file\n");
printf("\t-v\t: Sets VGA display mode\n");
printf("\t-e\t: Sets EGA display mode (default)\n");
printf("\t-9\t: Sets Number 9 display mode\n");
printf("\t-h\t: Specifies reading from an HDF file (default)\n");
printf("\t-c\t: Center the image on the screen\n");
printf("\t-p xwhere ywhere : Specify an x & y position for the upper left hand\n");
printf("\t\t\tcorner of the screen\n");
printf("\t-a\t: Set animation mode\n");
printf("\t-A\t: Set animation mode and specify animation of multiple\n");
printf("\t\t\timages from only one hdf file\n");
printf("\t-s\t: Specifies only one binary image and name is filename\n");
printf("\tfilename\t: The file containing a list of binary images or\n");
printf("\t\t\tan HDF file containing images\n\n");
printf("Note: for binary file usage, both the -b xdim ydim and the -m mapfile\n");
printf("\toptions must be used for the correct displaying of the image.\n");
printf("\tThe file name at the end of the command line is a mandatory command\n");
printf("\tline parameter, the rest of the command line parameters are optional.\n");
}
#ifdef FUTURE
/**********************************************************************
* Function : t16line
* Purpose : Convert Image to Targa format and display
* Parameters :
* x,y - x & y coor. for the position of the line
* store - the pointer for the image
* xoff - offset into the line
* len - length of a line of the image
* Returns : none
* Calls : pline()
* Called by : showpic()
**********************************************************************/
void t16line(x,y,store,xoff,len)
int x,y,xoff,len;
unsigned char *store;
{
short int i, /* counter variable */
v, /* variable to keep track of the color for the targa */
ind; /* data from the image line */
unsigned short int *ip; /* pointer to the current targa image line */
ip=l16;
for (i=0; i<len; i++) {
ind=*(store+i); /* get the data from image in memory */
v=bmap[ind]>>3; /* convert into targa form */
v |= (gmap[ind]>>3)<<5;
v |= (rmap[ind]>>3)<<10;
*ip++=v; /* store in targa line */
} /* end for */
pline(x,485-y,l16,len); /* call targa line routine */
}
#endif
void NO9setup()
/* prepare variables for use in other functions */
{
NO9ram=(char *)0xA0000;
NO9bank=(int *)0xC0705;
}
void clrbuf(bank)
unsigned int bank;
{
*NO9bank=bank;
memset(NO9ram,0,0xFFFF);
NO9ram[0xFFFF]=0;
}
void RG9gmode()
/* go into NO9 graphics mode -- not yet implemented */
{
clrbuf(0x0000);
clrbuf(0x00ff);
clrbuf(0xff00);
clrbuf(0xffff);
}
void RG9clrscr()
/*
Clear the screen.
*/
{
NO9setup();
RG9gmode();
}
