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vdcomp.c
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/********************************************************************/
/* Image Decompression Program - C Version for PC, VAX, Unix */
/* and Macintosh systems. */
/* */
/* Decompresses images using Kris Becker's subroutine DECOMP.C */
/* which is included in this program in a shortened version. */
/* */
/* Reads a variable length compressed PDS image and outputs a */
/* fixed length uncompressed image file in PDS format with */
/* labels, image histogram, engineering table, line header table */
/* and an image with PDS, FITS, VICAR or no labels. If used on */
/* a non-byte-swapped machine the image histogram is un-swapped. */
/* */
/********************************************************************/
/* */
/* Use the following commands to compile and link to produce an */
/* executable file: */
/* */
/* On an IBM PC (using Microsoft C Version 5.x) */
/* */
/* cl /c vdcomp.c */
/* link vdcomp/stack:10000; */
/* */
/* On a VAX: */
/* */
/* cc vdcomp */
/* $define lnk$library sys$library:vaxcrtl.olb */
/* link vdcomp */
/* */
/* On a Unix host (Sun, Masscomp) */
/* */
/* cc -o vdcomp vdcomp.c */
/* */
/* On a Macintosh (using Lightspeed C) */
/* */
/* link with the following libraries: */
/* stdio, storage, strings, unix and MacTraps, with MacTraps */
/* and vdcomp in a separate segment. */
/* */
/********************************************************************/
/* */
/* Use the following command to run the program: */
/* */
/* VDCOMP [infile] [outfile] [output format] */
/* */
/* infile - name of compressed image file. */
/* outfile - name of uncompressed output file. */
/* output format - selected from the following list: */
/* */
/* 1 SFDU/PDS format [DEFAULT]. */
/* 2 FITS format. */
/* 3 VICAR format. */
/* 4 Unlabelled binary array. */
/* */
/* On the VAX computer you will need to 'install' the program to */
/* be able to use command line arguments using the following */
/* command: */
/* */
/* $ vdcomp :== $DISKNAME:[DIRECTORY]vdcomp.exe */
/* */
/* where DISKNAME is the disk drive and DIRECTORY is the */
/* directory where VDCOMP.EXE is stored. */
/* */
/********************************************************************/
/* */
/* LIMS */
/* This program has been tested on a VAX 780 (VMS 4.6), SUN */
/* Workstation (UNIX 4.2, release 3.4), an IBM PC */
/* (MICROSOFT 5.1 compiler) and Macintosh IIx using Lightspeed C */
/* version 3.0. When converting to other systems, check for */
/* portability conflicts. */
/* */
/* HIST */
/* [email protected] 06-23-94 ansi-fied program */
/* [email protected], 11-15-91 added recognition of - as stdout for */
/* output filename; disabled various messages; directed */
/* messages to stderr; added exit status */
/* DEC89 Modified program to handle both Voyager and Viking images.*/
/* OCT89 Converted Voyager decompression program to handle Viking */
/* compressed images. Changed obuf to 'unsigned' to simplify */
/* computation of checksum. */
/* AUG89 Added code to get command line arguments for filenames */
/* and output format; routines to free memory used by the Huffman */
/* tree); fixed the SFDU label output length; and modified the */
/* I/O routines so that the open for Host type 2 uses binary I/O. */
/* JUN89 Fixed READVAR, to get length on 16-bit unswapped hosts. */
/* JUL88 C driver to decompress standard Voyager Compressed images */
/* by Mike Martin 1989/12/02 */
/* */
/* Inputs - Input file to be decompressed. */
/* */
/* Outputs - Output file containing decompressed image. */
/* */
/********************************************************************/
#include <stdio.h>
#include <stdlib.h>
/* include a malloc.h, of some sort... */
#ifndef VMS /* VMS hates multi-line '#if's */
# if !defined(ibm032) && \
!defined(__convex__) && \
!(defined(vax) && !defined(ultrix)) && \
!defined(mips) && \
!defined(apollo) && \
!defined(pyr) && \
!defined(__UMAXV__) && \
!defined(bsd43) && \
!defined(aux) && \
!defined(__bsdi__) && \
!defined(sequent)
# if defined(hp300) || defined(hp800) || defined(NeXT)
# include <sys/malloc.h> /* it's in 'sys' on HPs and NeXT */
# else
# include <malloc.h>
# endif
# endif
#endif /* !VMS */
#include <X11/Xos.h>
#define TRUE 1
#define FALSE 0
/* pc i/o defines */
#define O_BINARY 0x8000 /* file mode is binary */
/* vax i/o defines */
#define RECORD_TYPE "rfm=fix" /* VAX fixed length output */
#define CTX "ctx=bin" /* no translation of \n */
#define FOP "fop=cif,sup" /* file processing ops */
typedef struct leaf { struct leaf *right;
short int dn;
struct leaf *left;
} NODE;
/*************************************************************************
Declare the tree pointer. This pointer will hold the root of the tree
once the tree is created by the accompanying routine huff_tree.
**************************************************************************/
NODE *tree;
/* subroutine definitions */
#undef PARM
#ifdef __STDC__
# define PARM(a) a
#else
# define PARM(a) ()
#endif
int main PARM((int, char **));
void pds_labels PARM((int));
void fits_labels PARM((int));
void vicar_labels PARM((int));
void no_labels PARM((int));
int check_host PARM((void));
int get_files PARM((int));
void open_files PARM((int *));
int swap_int PARM((int));
void decompress PARM((char *, char *, int *, int *));
void decmpinit PARM((int *));
int read_var PARM((char *, int));
NODE *huff_tree PARM((int *));
NODE *new_node PARM((int));
void sort_freq PARM((int *, NODE **, int));
void dcmprs PARM((char *, char *, int *, int *, NODE *));
void free_tree PARM((int *));
int free_node PARM((NODE *, int));
/* global variables */
#define BUFSIZE 1024
int infile;
FILE *outfile;
char inname[BUFSIZE],outname[BUFSIZE];
int output_format;
int record_bytes, max_lines;
int line_samples, fits_pad;
int label_checksum = 0L, checksum = 0L;
/*************************************************/
int main(argc,argv)
int argc;
char **argv;
{
unsigned char ibuf[2048],obuf[2048];
unsigned char blank=32;
short host,length,total_bytes,line,i;
int x,hist[511];
int count, int_length;
/*********************************************************************/
/* */
/* get host information and input and output files */
/* */
/*********************************************************************/
strcpy(inname," ");
strcpy(outname," ");
output_format = 0;
if (argc == 1); /* prompt user for parameters */
else if (argc == 2 && (strncmp(argv[1],"help",(size_t) 4) == 0 ||
strncmp(argv[1],"HELP",(size_t) 4) == 0 ||
strncmp(argv[1],"?", (size_t) 1) == 0)) {
fprintf(stderr,
"PDS Image Decompression Program. Command line format:\n\n");
fprintf(stderr,"VDCOMP [infile] [outfile] [format code]\n");
fprintf(stderr," infile - name of compressed image file. \n");
fprintf(stderr," outfile - name of uncompressed output file.\n");
fprintf(stderr," output format - selected from the following list:\n");
fprintf(stderr,"\n");
fprintf(stderr," 1 SFDU/PDS format [DEFAULT].\n");
fprintf(stderr," 2 FITS format. \n");
fprintf(stderr," 3 VICAR format. \n");
fprintf(stderr," 4 Unlabelled binary array. \n\n");
exit(1);
}
else {
strncpy(inname,argv[1],BUFSIZE);
inname[BUFSIZE-1] = '\0';
if (argc >= 3)
{
strncpy(outname,argv[2],BUFSIZE);
outname[BUFSIZE-1] = '\0';
}
if (argc == 3) output_format = 1;
if (argc == 4) sscanf(argv[3],"%d",&output_format);
}
host = check_host();
host = get_files(host); /* may change host if VAX */
/*********************************************************************/
/* */
/* read and edit compressed file labels */
/* */
/*********************************************************************/
switch (output_format) {
case 1: pds_labels(host); break;
case 2: fits_labels(host); break;
case 3: vicar_labels(host); break;
case 4: no_labels(host); break;
}
if (record_bytes == 836) { /* set up values for image sizes */
max_lines = 800;
fits_pad = 2240;
line_samples = 800;
}
else {
max_lines = 1056;
fits_pad = 1536;
line_samples = 1204;
}
/*********************************************************************/
/* */
/* process the image histogram */
/* */
/*********************************************************************/
/* need to know record_bytes,hist_count,hist_item_type,item_count.*/
total_bytes = 0;
length = read_var((char *)hist,host);
total_bytes = total_bytes + length;
if (record_bytes == 836) { /* read one more time for Voyager image */
length = read_var((char *)hist+record_bytes,host);
total_bytes = total_bytes + length;
}
if (host == 2 || host == 5) /* If non-byte swapped */
for (i=0; i<256; i++) /* host, swap bytes in */
hist[i] = swap_int(hist[i]); /* the output histogram */
if (output_format == 1) {
if (record_bytes == 836) {
fwrite((char *)hist, (size_t) record_bytes, (size_t) 1, outfile);
fwrite((char *)hist+record_bytes, (size_t) length,(size_t) 1,outfile);
}
else {
fwrite((char *)hist, (size_t) 1024,(size_t) 1,outfile);
total_bytes = 1024;
}
/* pad out the histogram to a multiple of record bytes */
if (record_bytes == 836)
for (i=total_bytes; i<record_bytes*2; i++) fputc(blank,outfile);
else
for (i=total_bytes; i<record_bytes; i++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* process the encoding histogram */
/* don't have to byte-swap because DECOMP.C does it for us */
/* */
/*********************************************************************/
if (record_bytes == 836) {
length = read_var((char *)hist,host);
length = read_var((char *)hist+836,host);
length = read_var((char *)hist+1672,host);
}
else {
length = read_var((char *)hist,host);
length = read_var((char *)hist+1204,host);
}
/*********************************************************************/
/* */
/* process the engineering summary */
/* */
/*********************************************************************/
total_bytes = 0;
length = read_var((char *) ibuf,host);
if (output_format == 1) {
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
total_bytes = total_bytes + length;
/* pad out engineering to multiple of record_bytes */
for (i=total_bytes;i<record_bytes;i++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* process the line header table */
/* */
/*********************************************************************/
if (record_bytes == 1204) {
int_length = 0L;
for (i=0; i<1056; i++) {
length = read_var((char *) ibuf,host);
if (output_format == 1) {
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
int_length = int_length + length;
}
}
/* pad out engineering to multiple of record_bytes */
if (output_format == 1)
for (x=int_length;x<1204L*55L;x++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* initialize the decompression */
/* */
/*********************************************************************/
if (outfile != stdout)
fprintf(stderr,"\nInitializing decompression routine...");
decmpinit(hist);
/*********************************************************************/
/* */
/* decompress the image */
/* */
/*********************************************************************/
if (outfile!=stdout) fprintf(stderr,"\nDecompressing data...");
line=0;
do {
length = read_var((char *) ibuf,host);
if (length <= 0) break;
int_length = (int)length;
line += 1;
decompress((char *) ibuf, (char *) obuf, &int_length, &record_bytes);
if (output_format == 1) {
count = fwrite(obuf,(size_t) record_bytes,(size_t) 1,outfile);
if (count != 1) {
fprintf(stderr,"\nError writing output file. Aborting program.");
fprintf(stderr,"\nCheck disk space or for duplicate filename.");
exit(1);
}
}
else {
/* VICAR/FITS/etc */
count = fwrite(obuf,(size_t) line_samples,(size_t) 1,outfile);
if (count != 1) {
fprintf(stderr,"\nError writing output file. Aborting program.");
fprintf(stderr,"\nCheck disk space or for duplicate filename.");
exit(1);
}
}
if (record_bytes == 1204) /* do checksum for viking */
for (i=0; i<record_bytes; i++) checksum += (int)obuf[i];
if ((line % 100 == 0) && (outfile != stdout))
fprintf(stderr,"\nline %d",line);
} while (length > 0 && line < max_lines);
if (record_bytes == 1204 && (outfile != stdout))
/* print checksum for viking */
fprintf(stderr,"\n Image label checksum = %d computed checksum = %d\n",
label_checksum,checksum);
/* pad out FITS file to a multiple of 2880 */
if (output_format == 2)
for (i=0;i<fits_pad;i++) fputc(blank,outfile);
if (outfile!=stdout) printf("\n");
free_tree(&int_length);
close(infile);
fclose(outfile);
return 0;
}
/*********************************************************************/
/* */
/* subroutine get_files - get input filenames and open */
/* */
/*********************************************************************/
int get_files(host)
int host;
{
short shortint;
typedef long off_t;
if (inname[0] == ' ') {
printf("\nEnter name of file to be decompressed: ");
fgets (inname, BUFSIZE, stdin);
}
if ((host == 1) | (host == 2)) {
if ((infile = open(inname,O_RDONLY | O_BINARY)) <= 0) {
fprintf(stderr,"\ncan't open input file: %s\n",inname);
exit(1);
}
}
else if ((host == 3) | (host == 5)) {
if ((infile = open(inname,O_RDONLY)) <= 0) {
fprintf(stderr,"\ncan't open input file: %s\n",inname);
exit(1);
}
/****************************************************************/
/* If we are on a vax see if the file is in var length format. */
/* This logic is in here in case the vax file has been stored */
/* in fixed or undefined format. This might be necessary since */
/* vax variable length files can't be moved to other computer */
/* systems with standard comm programs (kermit, for example). */
/****************************************************************/
if (host == 3) {
read(infile,&shortint, (size_t) 2);
if (shortint > 0 && shortint < 80) {
host = 4; /* change host to 4 */
printf("This is not a VAX variable length file.");
}
else printf("This is a VAX variable length file.");
lseek(infile,(off_t) 0,0); /* reposition to beginning of file */
}
}
if (output_format == 0)
do {
printf("\nEnter a number for the output format desired:\n");
printf("\n 1. SFDU/PDS format.");
printf("\n 2. FITS format.");
printf("\n 3. VICAR format.");
printf("\n 4. Unlabelled binary array.\n");
printf("\n Enter format number:");
fgets(inname,BUFSIZE,stdin);
output_format = atoi(inname);
} while (output_format < 1 || output_format > 4);
if (outname[0] == ' ') {
printf("\nEnter name of uncompressed output file: ");
fgets (outname, BUFSIZE, stdin);
}
return(host);
}
/*********************************************************************/
/* */
/* subroutine open_files - open the output file after we get */
/* its record size by reading the input file labels. */
/* */
/*********************************************************************/
void open_files(host)
int *host;
{
if (*host == 1 || *host == 2 || *host == 5) {
if (outname[0] == '-') outfile=stdout;
else if ((outfile = fopen(outname,"wb"))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
else if (*host == 3 || *host == 4) {
if (output_format == 1) { /* write PDS format blocks */
if (record_bytes == 836) {
if ((outfile=fopen(outname,"w"
#ifdef VMS
,"mrs=836",FOP,CTX,RECORD_TYPE
#endif
))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
else {
if ((outfile=fopen(outname,"w"
#ifdef VMS
,"mrs=1204",FOP,CTX,RECORD_TYPE
#endif
))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
}
else if (output_format == 2) { /* write FITS format blocks */
if ((outfile=fopen(outname,"w"
#ifdef VMS
,"mrs=2880",FOP,CTX,RECORD_TYPE
#endif
))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
else { /* write fixed length records */
if (record_bytes == 836) {
if ((outfile=fopen(outname,"w"
#ifdef VMS
,"mrs=800",FOP,CTX,RECORD_TYPE
#endif
))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
else {
if ((outfile=fopen(outname,"w"
#ifdef VMS
,"mrs=1204",FOP,CTX,RECORD_TYPE
#endif
))==NULL) {
fprintf(stderr,"\ncan't open output file: %s\n",outname);
exit(1);
}
}
}
}
}
/*********************************************************************/
/* */
/* subroutine pds_labels - edit PDS labels and write to output file */
/* */
/*********************************************************************/
void pds_labels(host)
int host;
{
char ibuf[2048];
unsigned char cr=13,lf=10,blank=32;
short length,total_bytes,i;
total_bytes = 0;
do {
length = read_var(ibuf,host);
ibuf[length] = '\0';
/******************************************************************/
/* edit labels which need to be changed */
/******************************************************************/
if ((i = strncmp(ibuf,"NJPL1I00PDS1", (size_t) 12)) == 0);
else if ((i = strncmp(ibuf,"CCSD3ZF00001", (size_t) 12)) == 0);
else if ((i = strncmp(ibuf,"/* FILE",(size_t) 16)) == 0);
else if ((i = strncmp(ibuf,"RECORD_TYPE", (size_t) 11)) == 0);
/*****************************************************************/
/* don't write any of these labels out until we get the record */
/* bytes parameter. */
/*****************************************************************/
else if ((i = strncmp(ibuf,"RECORD_BYTES", (size_t) 12)) == 0) {
/*****************************************************************/
/* get the record_bytes value */
/*****************************************************************/
sscanf(ibuf+35,"%d",&record_bytes);
if (record_bytes != 836) record_bytes = 1204;
open_files(&host);
/* now we can write out the SFDU, comment and Record Type labels. */
if (record_bytes == 836)
fwrite("CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL",
(size_t) 53,(size_t) 1,outfile);
else
fwrite("CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL",
(size_t) 53,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
fwrite("/* FILE FORMAT AND LENGTH */",(size_t) 37,(size_t) 1,
outfile);
fprintf(outfile,"%c%c",cr,lf);
fwrite("RECORD_TYPE = FIXED_LENGTH",(size_t) 47,
(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
/* fix record_bytes parameter for Viking images */
if (record_bytes == 1204) strcpy(ibuf+35,"1204");
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 57 + 39 + 49;
}
else if ((i = strncmp(ibuf,"FILE_RECORDS",(size_t) 12)) == 0) {
/*****************************************************************/
/* change the file_records count */
/*****************************************************************/
if (record_bytes == 836) strcpy(ibuf+35,"806");
else strcpy(ibuf+35,"1115");
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"LABEL_RECORDS",(size_t) 13)) == 0) {
/*****************************************************************/
/* change the label_records count from 56 to 3 */
/*****************************************************************/
if (record_bytes == 836) strcpy(ibuf+35,"3");
else strcpy(ibuf+35,"2");
length -= 1;
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"^IMAGE_HISTOGRAM",(size_t) 16)) == 0) {
/*****************************************************************/
/* change the location pointer of image_histogram to record 4 */
/*****************************************************************/
if (record_bytes == 836) strcpy(ibuf+35,"4");
else strcpy(ibuf+35,"3");
length -= 1;
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"^ENCODING_HISTOGRAM)",(size_t) 19)) == 0);
/*****************************************************************/
/* delete the encoding_histogram location pointer */
/*****************************************************************/
else if ((i = strncmp(ibuf,"^ENGINEERING_TABLE",(size_t) 18)) == 0) {
/*****************************************************************/
/* change the location pointer of engineering_summary to record 6*/
/*****************************************************************/
if (record_bytes == 836) strcpy(ibuf+35,"6");
else strcpy(ibuf+35,"4");
length -= 1;
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"^LINE_HEADER_TABLE",(size_t) 18)) == 0) {
/*****************************************************************/
/* change the location pointer of line header table to record 5 */
/*****************************************************************/
strcpy(ibuf+35,"5");
length -= 1;
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"^IMAGE",(size_t) 6)) == 0) {
/*****************************************************************/
/* change the location pointer of image to record 7 */
/*****************************************************************/
if (record_bytes == 836) {
strcpy(ibuf+35,"7");
length=length-1;
}
else {
strcpy(ibuf+35,"60");
length = length - 2;
}
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
else if ((i = strncmp(ibuf,"OBJECT = ENCODING",
(size_t) 43)) == 0) {
/*****************************************************************/
/* delete the 4 encoding histogram labels */
/*****************************************************************/
for (i=0; i<4; i++) { /* ignore these labels */
length = read_var(ibuf,host);
}
}
else if ((i = strncmp(ibuf," ENCODING",(size_t) 9)) == 0);
/*****************************************************************/
/* delete the encoding type label in the image object */
/*****************************************************************/
else if ((host == 2 || host == 5) && (i = strncmp(ibuf,
" ITEM_TYPE = VAX_INTEGER",
(size_t) 46)) == 0) {
/*****************************************************************/
/* change the record_type value from variable to fixed */
/*****************************************************************/
strcpy(ibuf+35,"INTEGER");
length = length - 4;
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
/*****************************************************************/
/* find the checksum and store in label_checksum */
/*****************************************************************/
else if ((i = strncmp(ibuf," CHECKSUM",(size_t) 9)) == 0) {
ibuf[length] = '\0';
label_checksum = atol(ibuf+35);
}
/*****************************************************************/
/* if none of above write out the label to the output file */
/*****************************************************************/
else {
fwrite(ibuf,(size_t) length,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + length + 2;
}
/*****************************************************************/
/* test for the end of the PDS labels */
/*****************************************************************/
if ((i = strncmp(ibuf,"END",(size_t) 3)) == 0 && length == 3) break;
} while (length > 0);
/* pad out the labels with blanks to multiple of record_bytes */
if (record_bytes == 836)
for (i=total_bytes; i<record_bytes*3; i++) fputc(blank,outfile);
else
for (i=total_bytes; i<record_bytes*2; i++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* subroutine fits_labels - write FITS header to output file */
/* */
/*********************************************************************/
void fits_labels(host)
int host;
{
char ibuf[2048],outstring[80];
short length,total_bytes,i;
unsigned char cr=13,lf=10,blank=32;
do {
length = read_var(ibuf,host);
/*****************************************************************/
/* find the checksum and store in label_checksum */
/*****************************************************************/
if ((i = strncmp(ibuf," CHECKSUM",(size_t) 9)) == 0) {
ibuf[length] = '\0';
label_checksum = atol(ibuf+35);
}
else if ((i = strncmp(ibuf,"RECORD_BYTES",(size_t) 12)) == 0) {
/*****************************************************************/
/* get the record_bytes value */
/*****************************************************************/
sscanf(ibuf+35,"%d",&record_bytes);
if (record_bytes != 836) record_bytes = 1204;
}
/*****************************************************************/
/* read to the end of the PDS labels */
/*****************************************************************/
if ((i = strncmp(ibuf,"END",(size_t) 3)) == 0 && length == 3) break;
} while (length > 0);
open_files(&host);
total_bytes = 0;
strcpy(outstring,"SIMPLE = T");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
strcpy(outstring,"BITPIX = 8");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
strcpy(outstring,"NAXIS = 2");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
if (record_bytes == 836)
strcpy(outstring,"NAXIS1 = 800");
else
strcpy(outstring,"NAXIS1 = 1204");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
if (record_bytes == 836)
strcpy(outstring,"NAXIS2 = 800");
else
strcpy(outstring,"NAXIS2 = 1056");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
strcpy(outstring,"END ");
strcat(outstring," ");
fwrite(outstring,(size_t) 78,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 80;
/* pad out the labels with blanks to multiple of 2880 for FITS */
for (i=total_bytes; i<2880; i++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* subroutine vicar_labels - write vicar labels to output file */
/* */
/*********************************************************************/
void vicar_labels(host)
int host;
{
char ibuf[2048],outstring[80];
short length,total_bytes,i;
unsigned char cr=13,lf=10,blank=32;
do {
length = read_var(ibuf,host);
/*****************************************************************/
/* find the checksum and store in label_checksum */
/*****************************************************************/
if ((i = strncmp(ibuf," CHECKSUM",(size_t) 9)) == 0) {
ibuf[length] = '\0';
label_checksum = atol(ibuf+35);
}
else if ((i = strncmp(ibuf,"RECORD_BYTES",(size_t) 12)) == 0) {
/*****************************************************************/
/* get the record_bytes value */
/*****************************************************************/
sscanf(ibuf+35,"%d",&record_bytes);
if (record_bytes != 836) record_bytes = 1204;
}
/*****************************************************************/
/* read to the end of the PDS labels */
/*****************************************************************/
if ((i = strncmp(ibuf,"END",(size_t) 3)) == 0 && length == 3) break;
} while (length > 0);
open_files(&host);
total_bytes = 0;
if (record_bytes == 836)
strcpy(outstring,
"LBLSIZE=800 FORMAT='BYTE' TYPE='IMAGE' BUFSIZ=800 DIM=2 ");
else
strcpy(outstring,
"LBLSIZE=1204 FORMAT='BYTE' TYPE='IMAGE' BUFSIZ=1204 DIM=2 ");
fwrite(outstring,(size_t) 72,(size_t) 1,outfile);
total_bytes = total_bytes + 72;
if (record_bytes == 836)
strcpy(outstring,
"EOL=0 RECSIZE=800 ORG='BSQ' NL=800 NS=800 NB=1 N1=0 N2=0 N3=0 ");
else
strcpy(outstring,
"EOL=0 RECSIZE=1204 ORG='BSQ' NL=1056 NS=1204 NB=1 N1=0 N2=0 N3=0 ");
total_bytes = total_bytes + 71;
fwrite(outstring,(size_t) 71,(size_t) 1,outfile);
strcpy(outstring,"N4=0 NBB=0 NLB=0");
fwrite(outstring,(size_t) 18,(size_t) 1,outfile);
fprintf(outfile,"%c%c",cr,lf);
total_bytes = total_bytes + 20;
/* pad out the labels with blanks to multiple of record_bytes */
for (i=total_bytes;i<record_bytes;i++) fputc(blank,outfile);
}
/*********************************************************************/
/* */
/* subroutine no_labels - read past the pds labels */
/* */
/*********************************************************************/
void no_labels(host)
int host;
{
char ibuf[2048];
short length,i;
do {
length = read_var(ibuf,host);
/*****************************************************************/
/* find the checksum and store in label_checksum */
/*****************************************************************/
if ((i = strncmp(ibuf," CHECKSUM",(size_t) 9)) == 0) {
ibuf[length] = '\0';
label_checksum = atol(ibuf+35);
}
else if ((i = strncmp(ibuf,"RECORD_BYTES",(size_t) 12)) == 0) {
/*****************************************************************/
/* get the record_bytes value */
/*****************************************************************/
sscanf(ibuf+35,"%d",&record_bytes);
if (record_bytes != 836) record_bytes = 1204;
}
/*****************************************************************/
/* read to the end of the PDS labels */
/*****************************************************************/
if ((i = strncmp(ibuf,"END",(size_t) 3)) == 0 && length == 3) break;
} while (length > 0);
open_files(&host);
}
/*********************************************************************/
/* */
/* subroutine read_var - read variable length records from input file*/
/* */
/*********************************************************************/
int read_var(ibuf,host)
char *ibuf;