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
|
/*----------------------------------------------------------------------------
pgmtopgm
------------------------------------------------------------------------------
Part of the Netpbm package.
Copy PGM image from Standard Input to Standard Output
By Bryan Henderson, San Jose CA 2002.09.07
Contributed to the public domain by its author 2002.09.07
-----------------------------------------------------------------------------*/
#include "pgm.h"
int
main(int argc, char *argv[]) {
int format;
int rows, cols;
gray maxval;
int row;
gray * grayrow;
pgm_init(&argc, argv);
if (argc-1 != 0)
pm_error("Program takes no arguments. Input is from Standard Input");
pgm_readpgminit(stdin, &cols, &rows, &maxval, &format);
pgm_writepgminit(stdout, cols, rows, maxval, 0);
grayrow = pgm_allocrow(cols);
for (row = 0; row < rows; ++row) {
pgm_readpgmrow(stdin, grayrow, cols, maxval, format);
pgm_writepgmrow(stdout, grayrow, cols, maxval, 0);
}
pgm_freerow(grayrow);
pm_close(stdin);
return 0;
}
|
