/* copy image section from input to putput, with binning */
int copyImageSection(fitsfile *ifptr, fitsfile *ofptr,
int *dims, double *cens, int bin, char *slice,
int *status)
{
void *buf;
char card[FLEN_CARD];
char tbuf[SZ_LINE];
int numkeys, nkey, bitpix, dtype;
int start[2];
int end[2];
int naxis = 2;
long nelements;
long naxes[2];
long fpixel[2] = {1,1};
buf = getImageToArray(ifptr, dims, cens, bin, slice, start, end, &bitpix,
status);
if( !buf || *status ){
fits_get_errstatus(*status, tbuf);
fprintf(stderr, "ERROR: could not create section for output image: %s\n",
tbuf);
return *status;
}
/* get image size and total number of elements */
naxes[0] = (int)((end[0] - start[0] + 1) / bin);
naxes[1] = (int)((end[1] - start[1] + 1) / bin);
nelements = naxes[0] * naxes[1];
/* convert bitpix to cfitio data type */
switch(bitpix){
case 8:
dtype = TBYTE;
break;
case 16:
dtype = TSHORT;
break;
case -16:
dtype = TUSHORT;
break;
case 32:
dtype = TINT;
break;
case 64:
dtype = TLONGLONG;
break;
case -32:
dtype = TFLOAT;
break;
case -64:
dtype = TDOUBLE;
break;
default:
fprintf(stderr, "ERROR: unknown data type for image section\n");
return -1;
}
/* this code is modeled after cfitsio/cfileio.c/fits_copy_image_section() */
fits_create_img(ofptr, bitpix, naxis, naxes, status);
/* copy all other non-structural keywords from the input to output file */
fits_get_hdrspace(ifptr, &numkeys, NULL, status);
for(nkey=4; nkey<=numkeys; nkey++) {
fits_read_record(ifptr, nkey, card, status);
if (fits_get_keyclass(card) > TYP_CMPRS_KEY){
/* write the record to the output file */
fits_write_record(ofptr, card, status);
}
}
if( *status > 0 ){
fprintf(stderr,
"ERROR: can't copy header from input image to output section");
return(*status);
}
/* write image to FITS file */
fits_write_pix(ofptr, dtype, fpixel, nelements, buf, status);
/* update LTM/TLV values in header */
updateLTM(ifptr, ofptr,
(int)((end[0] + start[0]) / 2), (int)((end[1] + start[1]) / 2),
(int)(end[0] - start[0] + 1), (int)(end[1] - start[1] + 1),
bin, 1);
/* free up space */
if( buf ){
free(buf);
}
/* return status */
return *status;
}
int main(int argc, char **argv)
{
int c, i, j, got, args, jsonlen, istart;
int odim1, odim2, blen, pad;
int idim1=0, idim2=0, bitpix=0, ncard=0;
int verbose=0;
size_t totbytes, dlen;
char tbuf[SZ_LINE];
char *buf=NULL;
char *jsonheader=NULL;
char *iname=NULL, *oname=NULL;
FILE *ofp=NULL;
Optinfo optinfo;
#if HAVE_CFITSIO
int status = 0;
int n;
int hdutype;
int maxcard, morekeys;
int dims[2] = {0, 0};
int block = 1;
void *dbuf;
double d1, d2, d3, d4;
double cens[2] = {0.0, 0.0};
char *s;
char *filter=NULL;
char *evtlist = DEF_EVTLIST;
char card[81];
char s1[BUFLEN], s2[BUFLEN], s3[BUFLEN], s4[BUFLEN];
fitsfile *fptr=NULL, *ofptr=NULL;
#elif HAVE_FUNTOOLS
char *s=NULL;
int dtype;
Fun ifun=NULL, tfun=NULL;
#endif
/* we want the args in the same order in which they arrived, and
gnu getopt sometimes changes things without this */
putenv("POSIXLY_CORRECT=true");
/* process switch arguments */
while ((c = getopt(argc, argv, "b:e:f:s:v")) != -1){
switch(c){
case 'b':
#if HAVE_CFITSIO
block = atoi(optarg);
#else
fprintf(stderr, "warning: -b switch only for cfitsio (ignoring)\n");
#endif
break;
case 'e':
#if HAVE_CFITSIO
evtlist = optarg;
#else
fprintf(stderr, "warning: -e switch only for cfitsio (ignoring)\n");
#endif
break;
case 'f':
#if HAVE_CFITSIO
filter = optarg;
#else
fprintf(stderr, "warning: -f switch only for cfitsio (ignoring)\n");
#endif
break;
case 's':
#if HAVE_CFITSIO
s = strdup(optarg);
if( strlen(s) > BUFLEN ) s[BUFLEN-1] = '\0';
if( sscanf(s, "%[0-9.*] @ %[-0-9.*] , %[0-9.*] @ %[-0-9.*]%n",
s1, s2, s3, s4, &n) == 4){
dims[0] = atof(s1);
cens[0] = atof(s2);
dims[1] = atof(s3);
cens[1] = atof(s4);
} else if(sscanf(s, "%[-0-9.*] : %[-0-9.*] , %[-0-9.*] : %[-0-9.*]%n",
s1, s2, s3, s4, &n) == 4){
d1 = atof(s1);
d2 = atof(s2);
d3 = atof(s3);
d4 = atof(s4);
dims[0] = d2 - d1 + 1;
cens[0] = dims[0] / 2;
dims[1] = d4 - d3 + 1;
cens[1] = dims[1] / 2;
} else {
fprintf(stderr, "warning: unknown arg for -s switch (ignoring)\n");
}
if( s ) free(s);
#else
fprintf(stderr, "warning: -s switch only for cfitsio (ignoring)\n");
#endif
break;
case 'v':
verbose++;
break;
}
}
/* check for required arguments */
args = argc - optind;
if( args < 2 ){
fprintf(stderr, "usage: %s iname oname\n", argv[0]);
exit(1);
}
iname = argv[optind++];
oname = argv[optind++];
/* optional info */
if( !(optinfo = (Optinfo)calloc(sizeof(OptinfoRec), 1)) ){
fprintf(stderr, "ERROR: can't allocate optional info rec\n");
exit(1);
}
/* open the input FITS file */
#if HAVE_CFITSIO
fptr = openFITSFile(iname, evtlist, &hdutype, &status);
errchk(status);
#elif HAVE_FUNTOOLS
if( !(ifun = FunOpen(iname, "r", NULL)) ){
fprintf(stderr, "ERROR could not open input FITS file: %s (%s)\n",
iname, strerror(errno));
exit(1);
}
#endif
/* save the input filename in the png file */
optinfo->fitsname = iname;
/* open the output PGN file */
if( !strcmp(oname, "-") || !strcmp(oname, "stdout") ){
ofp = stdout;
} else if( !(ofp = fopen(oname, "w")) ){
fprintf(stderr, "ERROR: could not create output PNG file: %s (%s)\n",
oname, strerror(errno));
exit(1);
}
#if HAVE_CFITSIO
switch(hdutype){
case IMAGE_HDU:
// get image array
dbuf = getImageToArray(fptr, NULL, NULL, &idim1, &idim2, &bitpix, &status);
errchk(status);
fits_get_hdrspace(fptr, &maxcard, &morekeys, &status);
errchk(status);
ofptr = fptr;
break;
default:
ofptr = filterTableToImage(fptr, filter, NULL, dims, cens, block, &status);
errchk(status);
// get image array
dbuf = getImageToArray(ofptr, NULL, NULL, &idim1, &idim2, &bitpix, &status);
errchk(status);
// get number of keys
fits_get_hdrspace(ofptr, &maxcard, &morekeys, &status);
errchk(status);
break;
}
#elif HAVE_FUNTOOLS
/* copy the input fits header into a FITS image header */
if( !(tfun = (Fun)calloc(1, sizeof(FunRec))) ){
fprintf(stderr, "ERROR: could not create tfun struct\n");
exit(1);
}
_FunCopy2ImageHeader(ifun, tfun);
/* and save for storage in the png file */
optinfo->fitsheader = (char *)tfun->header->cards;
/* get image parameters. its safe to do this before calling image get
so long as we don't change bitpix before that call */
FunInfoGet(ifun,
FUN_SECT_BITPIX, &bitpix,
FUN_SECT_DIM1, &idim1,
FUN_SECT_DIM2, &idim2,
0);
#endif
/* convert FITS header into a json string */
snprintf(tbuf, SZ_LINE-1, "{\"js9Protocol\": %s, ", JS9_PROTOCOL);
scat(tbuf, &jsonheader);
snprintf(tbuf, SZ_LINE-1, "\"js9Endian\": \"%s\", ", JS9_ENDIAN);
scat(tbuf, &jsonheader);
snprintf(tbuf, SZ_LINE-1, "\"cardstr\": \"");
scat(tbuf, &jsonheader);
// concat header cards into a single string
#if HAVE_CFITSIO
while( ++ncard <= maxcard ){
fits_read_record(ofptr, ncard, card, &status);
errchk(status);
// change " to '
for(i=0; i<80; i++){
if( card[i] == '"' ){
card[i] = '\'';
}
}
snprintf(tbuf, SZ_LINE-1, "%-80s", card);
scat(tbuf, &jsonheader);
}
#elif HAVE_FUNTOOLS
while( (s = FunParamGets(tfun, NULL, ++ncard, NULL, &dtype)) ){
for(i=0; i<80; i++){
if( s[i] == '"' ){
s[i] = '\'';
}
}
scat(s, &jsonheader);
if( s ) free(s);
}
#endif
// end with the number of cards
snprintf(tbuf, SZ_LINE-1, "\", \"ncard\": %d}", ncard);
scat(tbuf, &jsonheader);
/* we want the image buffer to start on an 8-byte boundary,
so make jsonheader + null byte end on one */
pad = 8 - (strlen(jsonheader) % 8) - 1;
for(i=0; i<pad; i++){
strcat(jsonheader, " ");
}
/* get final length of json header */
jsonlen = strlen(jsonheader);
/* total length of the header + null + image we are storing */
blen = ABS(bitpix/8);
dlen = (size_t)idim1 * (size_t)idim2 * blen;
totbytes = jsonlen + 1 + dlen;
/* all of this should now fit into the png image */
/* somewhat arbitrarily, we use idim1 for odim1, and adjust odim2 to fit */
odim1 = idim1;
odim2 = (int)(((totbytes + odim1 - 1) / odim1) + (COLOR_CHANNELS-1)) / COLOR_CHANNELS;
/* allocate buf to hold json header + null byte + RGB image */
if( !(buf=calloc(COLOR_CHANNELS, odim1 * odim2)) ){
fprintf(stderr, "ERROR: can't allocate image buf\n");
exit(1);
}
/* move the json header into the output buffer */
memmove(buf, jsonheader, jsonlen);
/* add a null byte to signify end of json header */
buf[jsonlen] = '\0';
/* offset into image buffer where image starts, past header and null byte */
istart = jsonlen + 1;
/* debug output */
if( verbose ){
fprintf(stderr,
"idim=%d,%d (bitpix=%d jsonlen=%d istart=%d endian=%s) [%ld] -> odim=%d,%d [%d]\n",
idim1, idim2, bitpix, jsonlen, istart, JS9_ENDIAN, totbytes,
odim1, odim2, odim1 * odim2 * COLOR_CHANNELS);
}
#if HAVE_CFITSIO
/* move the json header into the output buffer */
memmove(&buf[istart], dbuf, dlen);
#elif HAVE_FUNTOOLS
/* extract and bin the data section into an image buffer */
if( !FunImageGet(ifun, &buf[istart], NULL) ){
fprintf(stderr, "ERROR: could not FunImageGet: %s\n", iname);
exit(1);
}
#endif
/* debugging output to check against javascript input */
if( verbose > 1 ){
fprintf(stderr, "jsonheader: %s\n", jsonheader);
for(j=0; j<idim2; j++){
fprintf(stderr, "data #%d: ", j);
for(i=0; i<idim1; i++){
switch(bitpix){
case 8:
fprintf(stderr, "%d ",
*(unsigned char *)(buf + istart + ((j * idim1) + i) * blen));
break;
case 16:
fprintf(stderr, "%d ",
*(short *)(buf + istart + ((j * idim1) + i) * blen));
break;
case -16:
fprintf(stderr, "%d ",
*(unsigned short *)(buf + istart + ((j * idim1) + i) * blen));
break;
case 32:
fprintf(stderr, "%d ",
*(int *)(buf + istart + ((j * idim1) + i) * blen));
break;
case -32:
fprintf(stderr, "%.3f ",
*(float *)(buf + istart + ((j * idim1) + i) * blen));
break;
case -64:
fprintf(stderr, "%.3f ",
*(double *)(buf + istart + ((j * idim1) + i) * blen));
break;
}
}
fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
}
/* might have to swap to preferred endian for png creation */
if( (!strncmp(JS9_ENDIAN, "l", 1) && is_bigendian()) ||
(!strncmp(JS9_ENDIAN, "b", 1) && !is_bigendian()) ){
swap_data(&buf[istart], idim1 * idim2, bitpix/8);
}
/* write the PNG file */
got = writePNG(ofp, buf, odim1, odim2, optinfo);
/* free up space */
if( buf ) free(buf);
if( optinfo ) free(optinfo);
if( jsonheader ) free(jsonheader);
/* close files */
#if HAVE_CFITSIO
status = 0;
if( ofptr && (ofptr != fptr) ) closeFITSFile(ofptr, &status);
if( fptr ) closeFITSFile(fptr, &status);
if( dbuf ) free(dbuf);
#elif HAVE_FUNTOOLS
if( ifun ) FunClose(ifun);
if( tfun ){
FunClose(tfun);
free(tfun);
}
#endif
if( ofp) fclose(ofp);
/* return the news */
return got;
}