1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include "imfort.h"
# IMPL3R -- Put a line to an image of type short or real. Automatic
# datatype conversion from real to short is performed if necessary.
# It is illegal to reference out of bounds.
procedure impl3r (im, buf, lineno, bandno, ier)
pointer im # image descriptor
real buf[ARB] # user data buffer
int lineno # line number
int bandno # band number
int ier
pointer bp
long offset
int nchars, npix
int imwpix()
errchk malloc
begin
# Verify in bounds.
if (lineno < 1 || lineno > IM_LEN(im,2)) {
ier = IE_YOOB
call im_seterrim (ier, im)
return
} else if (bandno < 1 || bandno > IM_LEN(im,3)) {
ier = IE_ZOOB
call im_seterrim (ier, im)
return
}
# Need an extra line buffer for the type conversion in this case.
if (IM_PIXTYPE(im) == TY_SHORT) {
bp = IM_LINEBUFP(im)
if (bp == NULL) {
call malloc (bp, IM_LEN(im,1), TY_SHORT)
IM_LINEBUFP(im) = bp
}
}
npix = IM_LEN(im,1)
nchars = npix * IM_SZPIXEL(im)
# Compute offset into pixel file.
offset = IM_PIXOFF(im) +
((bandno-1) * IM_LEN(im,2) + (lineno-1)) * IM_LINESIZE(im)
if (IM_PIXTYPE(im) == TY_SHORT) {
# Convert the pixels from real to short before writing to the
# pixel file.
call achtrs (buf, Mems[bp], npix)
# Write one line of data.
if (nchars != imwpix (im, Mems[bp], nchars, offset, 1)) {
ier = IE_WRPIX
call im_seterrim (ier, im)
return
}
} else {
# Write one line of data.
if (nchars != imwpix (im, buf, nchars, offset, 0)) {
ier = IE_WRPIX
call im_seterrim (ier, im)
return
}
}
ier = OK
end
|
