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root/radiance/ray/src/common/resolu.h
Revision: 2.9
Committed: Fri Jan 2 11:35:17 2004 UTC (20 years, 3 months ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R6, rad3R6P1
Changes since 2.8: +3 -2 lines
Log Message:
Fixed typing/prototype of getheader() and its callback.

File Contents

# Content
1 /* RCSid $Id: resolu.h,v 2.8 2003/10/27 10:19:31 schorsch Exp $ */
2 /*
3 * Definitions for resolution line in image file.
4 *
5 * Include after <stdio.h>, <string.h>, and <time.h>
6 *
7 * True image orientation is defined by an xy coordinate system
8 * whose origin is at the lower left corner of the image, with
9 * x increasing to the right and y increasing in the upward direction.
10 * This true orientation is independent of how the pixels are actually
11 * ordered in the file, which is indicated by the resolution line.
12 * This line is of the form "{+-}{XY} xyres {+-}{YX} yxres\n".
13 * A typical line for a 1024x600 image might be "-Y 600 +X 1024\n",
14 * indicating that the scanlines are in English text order (PIXSTANDARD).
15 */
16 #ifndef _RAD_RESOLU_H_
17 #define _RAD_RESOLU_H_
18
19 #include <time.h>
20
21
22 #ifdef __cplusplus
23 extern "C" {
24 #endif
25
26 /* flags for scanline ordering */
27 #define XDECR 1
28 #define YDECR 2
29 #define YMAJOR 4
30
31 /* standard scanline ordering */
32 #define PIXSTANDARD (YMAJOR|YDECR)
33 #define PIXSTDFMT "-Y %d +X %d\n"
34
35 /* structure for image dimensions */
36 typedef struct {
37 int rt; /* orientation (from flags above) */
38 int xr, yr; /* x and y resolution */
39 } RESOLU;
40
41 /* macros to get scanline length and number */
42 #define scanlen(rs) ((rs)->rt & YMAJOR ? (rs)->xr : (rs)->yr)
43 #define numscans(rs) ((rs)->rt & YMAJOR ? (rs)->yr : (rs)->xr)
44
45 /* resolution string buffer and its size */
46 #define RESOLU_BUFLEN 32
47 extern char resolu_buf[RESOLU_BUFLEN];
48
49 /* macros for reading/writing resolution struct */
50 #define fputsresolu(rs,fp) fputs(resolu2str(resolu_buf,rs),fp)
51 #define fgetsresolu(rs,fp) str2resolu(rs, \
52 fgets(resolu_buf,RESOLU_BUFLEN,fp))
53
54 /* reading/writing of standard ordering */
55 #define fprtresolu(sl,ns,fp) fprintf(fp,PIXSTDFMT,ns,sl)
56 #define fscnresolu(sl,ns,fp) (fscanf(fp,PIXSTDFMT,ns,sl)==2)
57
58 /* defined in resolu.c */
59 extern void fputresolu(int ord, int sl, int ns, FILE *fp);
60 extern int fgetresolu(int *sl, int *ns, FILE *fp);
61 extern char * resolu2str(char *buf, RESOLU *rp);
62 extern int str2resolu(RESOLU *rp, char *buf);
63 /* defined in header.c */
64 extern void newheader(char *t, FILE *fp);
65 extern int isheadid(char *s);
66 extern int headidval(char *r, char *s);
67 extern int dateval(time_t *t, char *s);
68 extern int isdate(char *s);
69 extern void fputdate(time_t t, FILE *fp);
70 extern void fputnow(FILE *fp);
71 extern void printargs(int ac, char **av, FILE *fp);
72 extern int isformat(char *s);
73 extern int formatval(char *r, char *s);
74 extern void fputformat(char *s, FILE *fp);
75 typedef int gethfunc(char *s, void *p); /* callback to process header lines */
76 extern int getheader(FILE *fp, gethfunc *f, void *p);
77 extern int globmatch(char *pat, char *str);
78 extern int checkheader(FILE *fin, char *fmt, FILE *fout);
79
80 #ifdef __cplusplus
81 }
82 #endif
83 #endif /* _RAD_RESOLU_H_ */
84