anqfits_image_t* anqfits_get_image(const anqfits_t* qf, int ext) {
const anqfits_image_t* t = anqfits_get_image_const(qf, ext);
anqfits_image_t* tout;
if (!t)
return NULL;
tout = anqfits_image_new();
memcpy(tout, t, sizeof(anqfits_image_t));
return tout;
}
int main(int argc, char *argv[]) {
int argchar;
char* infn = NULL;
char* outfn = NULL;
FILE* fout;
anbool tostdout = FALSE;
anqfits_t* anq;
int W, H;
qfits_header* hdr;
const anqfits_image_t* animg;
float* img;
int loglvl = LOG_MSG;
int scale = 2;
int winw;
int winh;
int plane;
int out_bitpix = -32;
float* outimg;
int outw, outh;
int edge = EDGE_TRUNCATE;
int ext = 0;
int npixout = 0;
while ((argchar = getopt (argc, argv, OPTIONS)) != -1)
switch (argchar) {
case 'v':
loglvl++;
break;
case 's':
scale = atoi(optarg);
break;
case 'e':
ext = atoi(optarg);
break;
case '?':
case 'h':
printHelp(argv[0]);
return 0;
default:
return -1;
}
log_init(loglvl);
log_to(stderr);
errors_log_to(stderr);
fits_use_error_system();
if (argc - optind != 2) {
logerr("Need two arguments: input and output files.\n");
printHelp(argv[0]);
exit(-1);
}
infn = argv[optind];
outfn = argv[optind+1];
if (streq(outfn, "-")) {
tostdout = TRUE;
fout = stdout;
} else {
fout = fopen(outfn, "wb");
if (!fout) {
SYSERROR("Failed to open output file \"%s\"", outfn);
exit(-1);
}
}
anq = anqfits_open(infn);
if (!anq) {
ERROR("Failed to open input file \"%s\"", infn);
exit(-1);
}
animg = anqfits_get_image_const(anq, ext);
W = (int)animg->width;
H = (int)animg->height;
if (!animg) {
ERROR("Failde to read image from \"%s\"", infn);
exit(-1);
}
/*
if (tostdout)
dump.filename = "STDOUT";
else
dump.filename = outfn;
dump.ptype = PTYPE_FLOAT;
dump.out_ptype = out_bitpix;
*/
get_output_image_size(W % scale, H % scale,
scale, edge, &outw, &outh);
outw += (W / scale);
outh += (H / scale);
hdr = qfits_header_default();
fits_header_add_int(hdr, "BITPIX", out_bitpix, "bits per pixel");
if (animg->planes > 1)
fits_header_add_int(hdr, "NAXIS", 3, "number of axes");
else
fits_header_add_int(hdr, "NAXIS", 2, "number of axes");
fits_header_add_int(hdr, "NAXIS1", outw, "image width");
fits_header_add_int(hdr, "NAXIS2", outh, "image height");
if (animg->planes > 1)
fits_header_add_int(hdr, "NAXIS3", animg->planes, "number of planes");
if (qfits_header_dump(hdr, fout)) {
ERROR("Failed to write FITS header to \"%s\"", outfn);
exit(-1);
}
qfits_header_destroy(hdr);
winw = W;
winh = (int)ceil(ceil(1024*1024 / (float)winw) / (float)scale) * scale;
outimg = malloc((int)ceil(winw/scale)*(int)ceil(winh/scale) * sizeof(float));
logmsg("Image is %i x %i x %i\n", W, H, (int)animg->planes);
logmsg("Output will be %i x %i x %i\n", outw, outh, (int)animg->planes);
logverb("Reading in blocks of %i x %i\n", winw, winh);
for (plane=0; plane<animg->planes; plane++) {
int bx, by;
int nx, ny;
for (by=0; by<(int)ceil(H / (float)winh); by++) {
for (bx=0; bx<(int)ceil(W / (float)winw); bx++) {
int i;
int lox, loy, hix, hiy, outw, outh;
nx = MIN(winw, W - bx*winw);
ny = MIN(winh, H - by*winh);
lox = bx*winw;
loy = by*winh;
hix = lox + nx;
hiy = loy + ny;
logverb(" reading %i,%i + %i,%i\n", lox, loy, nx, ny);
img = anqfits_readpix(anq, ext, lox, hix, loy, hiy, plane,
PTYPE_FLOAT, NULL, &W, &H);
if (!img) {
ERROR("Failed to load pixel window: x=[%i, %i), y=[%i,%i), plane %i\n",
lox, hix, loy, hiy, plane);
exit(-1);
}
average_image_f(img, nx, ny, scale, edge,
&outw, &outh, outimg);
free(img);
logverb(" writing %i x %i\n", outw, outh);
if (outw * outh == 0)
continue;
for (i=0; i<outw*outh; i++) {
int nbytes = abs(out_bitpix)/8;
char buf[nbytes];
if (qfits_pixel_ctofits(PTYPE_FLOAT, out_bitpix,
outimg + i, buf)) {
ERROR("Failed to convert pixel to FITS type\n");
exit(-1);
}
if (fwrite(buf, nbytes, 1, fout) != 1) {
ERROR("Failed to write pixels\n");
exit(-1);
}
}
npixout += outw*outh;
}
}
}
free(outimg);
anqfits_close(anq);
if (tostdout) {
// pad.
int N;
char pad[2880];
N = (npixout * (abs(out_bitpix) / 8)) % 2880;
memset(pad, 0, 2880);
fwrite(pad, 1, N, fout);
} else {
if (fits_pad_file(fout)) {
ERROR("Failed to pad output file");
exit(-1);
}
if (fclose(fout)) {
SYSERROR("Failed to close output file");
exit(-1);
}
}
logverb("Done!\n");
return 0;
}
