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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <imhdr.h>
include "wfits.h"
# WFT_WRITE_IMAGE -- Procedure to convert IRAF image data to FITS format line by
# line.
procedure wft_write_image (im, fits, fits_fd)
pointer im # IRAF image descriptor
pointer fits # FITS data structure
int fits_fd # FITS file descriptor
int npix, nlines, npix_record, i, stat, nrecords
long v[IM_MAXDIM]
pointer tempbuf, buf
int wft_get_image_line()
errchk malloc, mfree, wft_get_image_line, wft_lscale_line, wft_long_line
errchk wft_init_write_pixels, wft_write_pixels, wft_write_last_record
errchk wft_rscale_line, wft_dscale_line
include "wfits.com"
begin
if (NAXIS(im) == 0)
return
# Initialize.
npix = NAXISN(im,1)
nlines = 1
do i = 2, NAXIS(im)
nlines = nlines * NAXISN(im, i)
npix_record = len_record * FITS_BYTE / abs (FITS_BITPIX(fits))
call amovkl (long(1), v, IM_MAXDIM)
switch (FITS_BITPIX(fits)) {
case FITS_REAL:
# Allocate temporary space.
call malloc (tempbuf, npix, TY_REAL)
# Initialize the pixel write.
call wft_init_write_pixels (npix_record, TY_REAL,
FITS_BITPIX(fits), blkfac)
# For the time being explicitly turn off ieee NaN mapping.
call ieemapr (NO, NO)
# Scale the lines, deal with the blanks via the ieee code which
# is currently turned off, and write the output records.
do i = 1, nlines {
iferr (stat = wft_get_image_line (im, buf, v, PIXTYPE(im))) {
call erract (EA_WARN)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
}
if (stat == EOF )
return
if (stat != npix)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
if (SCALE(fits) == YES)
call wft_rscale_line (buf, Memr[tempbuf], npix,
1. / BSCALE(fits), -BZERO(fits), PIXTYPE(im))
else
call wft_real_line (buf, Memr[tempbuf], npix, PIXTYPE(im))
call wft_write_pixels (fits_fd, Memr[tempbuf], npix)
}
# Free space.
call mfree (tempbuf, TY_REAL)
case FITS_DOUBLE:
# Allocate temporary space.
call malloc (tempbuf, npix, TY_DOUBLE)
# Initialize the pixel write.
call wft_init_write_pixels (npix_record, TY_DOUBLE,
FITS_BITPIX(fits), blkfac)
# For the time being explicitly turn off ieee NaN mapping.
call ieemapd (NO, NO)
# Scale the lines, deal with the blanks via the ieee code which
# is currently turned off, and write the output records.
do i = 1, nlines {
iferr (stat = wft_get_image_line (im, buf, v, PIXTYPE(im))) {
call erract (EA_WARN)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
}
if (stat == EOF )
return
if (stat != npix)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
if (SCALE(fits) == YES)
call wft_dscale_line (buf, Memd[tempbuf], npix,
1. / BSCALE(fits), -BZERO(fits), PIXTYPE(im))
else
call wft_double_line (buf, Memd[tempbuf], npix,
PIXTYPE(im))
call wft_write_pixels (fits_fd, Memd[tempbuf], npix)
}
# Free space.
call mfree (tempbuf, TY_DOUBLE)
default:
# Allocate temporary space.
call malloc (tempbuf, npix, TY_LONG)
# Scale the line, deal with the blanks, and write the output
# record. At the moement blanks are not dealt with.
call wft_init_write_pixels (npix_record, TY_LONG, FITS_BITPIX(fits),
blkfac)
do i = 1, nlines {
iferr (stat = wft_get_image_line (im, buf, v, PIXTYPE(im))) {
call erract (EA_WARN)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
}
if (stat == EOF )
return
if (stat != npix)
call error (10, "WRT_IMAGE: Error writing IRAF image.")
if (SCALE(fits) == YES)
call wft_lscale_line (buf, Meml[tempbuf], npix,
1. / BSCALE(fits), -BZERO(fits), PIXTYPE(im))
else
call wft_long_line (buf, Meml[tempbuf], npix, PIXTYPE(im))
# call map_blanks (im, Meml[tempbuf], blank)
call wft_write_pixels (fits_fd, Meml[tempbuf], npix)
}
# Free space.
call mfree (tempbuf, TY_LONG)
}
# Write the final record.
call wft_write_last_record (fits_fd, nrecords)
if (short_header == YES || long_header == YES) {
call printf ("%d Data logical (2880 byte) records written\n")
call pargi (nrecords)
}
end
# WFT_GET_IMAGE_LINE -- Procedure to fetch the next image line.
int procedure wft_get_image_line (im, buf, v, datatype)
pointer im # IRAF image descriptor
pointer buf # pointer to image line
long v[ARB] # imio dimension descriptor
int datatype # IRAF image data type
int npix
int imgnll(), imgnlr(), imgnld(), imgnlx()
errchk imgnll, imgnlr, imgnld, imgnlx
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_USHORT, TY_LONG:
npix = imgnll (im, buf, v)
case TY_REAL:
npix = imgnlr (im, buf, v)
case TY_DOUBLE:
npix = imgnld (im, buf, v)
case TY_COMPLEX:
npix = imgnlx (im, buf, v)
default:
call error (11, "GET_IMAGE_LINE: Unknown IRAF image type.")
}
return (npix)
end
# WFT_RSCALE_LINE -- This procedure converts the IRAF data to type real
# and scales by the FITS parameters bscale and bzero.
procedure wft_rscale_line (buf, outbuffer, npix, bscale, bzero, datatype)
pointer buf # pointer to IRAF image line
real outbuffer[ARB] # FITS integer buffer
int npix # number of pixels
double bscale, bzero # FITS bscale and bzero parameters
int datatype # data type of image
errchk achtlr, altadr, amovr, achtdr, acthxr
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call achtlr (Meml[buf], outbuffer, npix)
call altadr (outbuffer, outbuffer, npix, bzero, bscale)
case TY_REAL:
call amovr (Memr[buf], outbuffer, npix)
call altadr (outbuffer, outbuffer, npix, bzero, bscale)
case TY_DOUBLE:
call achtdr (Memd[buf], outbuffer, npix)
call altadr (outbuffer, outbuffer, npix, bzero, bscale)
case TY_COMPLEX:
call achtxr (Memx[buf], outbuffer, npix)
call altadr (outbuffer, outbuffer, npix, bzero, bscale)
default:
call error (12, "WFT_RSCALE_LINE: Unknown IRAF image type.")
}
end
# WFT_DSCALE_LINE -- This procedure converts the IRAF data to type double with
# after scaling by the FITS parameters bscale and bzero.
procedure wft_dscale_line (buf, outbuffer, npix, bscale, bzero, datatype)
pointer buf # pointer to IRAF image line
double outbuffer[ARB] # FITS integer buffer
int npix # number of pixels
double bscale, bzero # FITS bscale and bzero parameters
int datatype # data type of image
errchk achtld, altad, amovd, achtrd, achtxd
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call achtld (Meml[buf], outbuffer, npix)
call altad (outbuffer, outbuffer, npix, bzero, bscale)
case TY_REAL:
call achtrd (Memr[buf], outbuffer, npix)
call altad (outbuffer, outbuffer, npix, bzero, bscale)
case TY_DOUBLE:
call amovd (Memd[buf], outbuffer, npix)
call altad (outbuffer, outbuffer, npix, bzero, bscale)
case TY_COMPLEX:
call achtxd (Memx[buf], outbuffer, npix)
call altad (outbuffer, outbuffer, npix, bzero, bscale)
default:
call error (12, "WFT_DSCALE_LINE: Unknown IRAF image type.")
}
end
# WFT_LSCALE_LINE -- This procedure converts the IRAF data to type long with
# after scaling by the FITS parameters bscale and bzero.
procedure wft_lscale_line (buf, outbuffer, npix, bscale, bzero, datatype)
pointer buf # pointer to IRAF image line
long outbuffer[ARB] # FITS integer buffer
int npix # number of pixels
double bscale, bzero # FITS bscale and bzero parameters
int datatype # data type of image
errchk altal, amovl, altadr, achtrl, altad, achtdl, altax, achtxl
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call altal (Meml[buf], Meml[buf], npix, bzero, bscale)
call amovl (Meml[buf], outbuffer, npix)
case TY_REAL:
call altarl (Memr[buf], outbuffer, npix, bzero, bscale)
#call altadr (Memr[buf], Memr[buf], npix, bzero, bscale)
#call achtrl (Memr[buf], outbuffer, npix)
case TY_DOUBLE:
call altad (Memd[buf], Memd[buf], npix, bzero, bscale)
call achtdl (Memd[buf], outbuffer, npix)
case TY_COMPLEX:
call altadx (Memx[buf], Memx[buf], npix, bzero, bscale)
call achtxl (Memx[buf], outbuffer, npix)
default:
call error (12, "WFT_LSCALE_LINE: Unknown IRAF image type.")
}
end
# WFT_REAL_LINE -- This procedure converts the IRAF image line to type long with
# no scaling.
procedure wft_real_line (buf, outbuffer, npix, datatype)
pointer buf # pointer to IRAF image line
real outbuffer[ARB] # buffer of FITS integers
int npix # number of pixels
int datatype # IRAF image datatype
errchk achtlr, achtdr, amovr, achtxr
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call achtlr (Meml[buf], outbuffer, npix)
case TY_REAL:
call amovr (Memr[buf], outbuffer, npix)
case TY_DOUBLE:
call achtdr (Memd[buf], outbuffer, npix)
case TY_COMPLEX:
call achtxr (Memx[buf], outbuffer, npix)
default:
call error (13, "WFT_REAL_LINE: Unknown IRAF data type.")
}
end
# WFT_DOUBLE_LINE -- This procedure converts the IRAF image line to type long
# with no scaling.
procedure wft_double_line (buf, outbuffer, npix, datatype)
pointer buf # pointer to IRAF image line
double outbuffer[ARB] # buffer of FITS integers
int npix # number of pixels
int datatype # IRAF image datatype
errchk achtld, achtrd, amovd, achtxd
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call achtld (Meml[buf], outbuffer, npix)
case TY_REAL:
call achtrd (Memr[buf], outbuffer, npix)
case TY_DOUBLE:
call amovd (Memd[buf], outbuffer, npix)
case TY_COMPLEX:
call achtxd (Memx[buf], outbuffer, npix)
default:
call error (13, "WFT_DOUBLE_LINE: Unknown IRAF data type.")
}
end
# WFT_LONG_LINE -- This procedure converts the IRAF image line to type long with
# no scaling.
procedure wft_long_line (buf, outbuffer, npix, datatype)
pointer buf # pointer to IRAF image line
long outbuffer[ARB] # buffer of FITS integers
int npix # number of pixels
int datatype # IRAF image datatype
errchk amovl, achtrl, achtdl, achtxl
begin
switch (datatype) {
case TY_SHORT, TY_INT, TY_LONG, TY_USHORT:
call amovl (Meml[buf], outbuffer, npix)
case TY_REAL:
call achtrl (Memr[buf], outbuffer, npix)
case TY_DOUBLE:
call achtdl (Memd[buf], outbuffer, npix)
case TY_COMPLEX:
call achtxl (Memx[buf], outbuffer, npix)
default:
call error (13, "WFT_LONG_LINE: Unknown IRAF data type.")
}
end
# ALTARL -- Procedure to linearly scale a real vector into a long vector
# using double precision constants to preserve precision.
procedure altarl (a, b, npix, k1, k2)
real a[ARB] # input vector
long b[ARB] # output vector
int npix # number of pixels
double k1, k2 # scaling factors
int i
begin
do i = 1, npix
b[i] = (a[i] + k1) * k2
end
# ALTADR -- Procedure to linearly scale a real vector in double precision
procedure altadr (a, b, npix, k1, k2)
real a[ARB] # input vector
real b[ARB] # output vector
int npix # number of pixels
double k1, k2 # scaling factors
int i
begin
do i = 1, npix
b[i] = (a[i] + k1) * k2
end
# ALTADX -- Procedure to linearly scale a complex vector in double precision
procedure altadx (a, b, npix, k1, k2)
complex a[ARB] # input vector
complex b[ARB] # output vector
int npix # number of pixels
double k1, k2 # scaling factors
int i
begin
do i = 1, npix
b[i] = (a[i] + k1) * k2
end
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