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root/Development/ray/src/common/fltdepth.c

Comparing ray/src/common/fltdepth.c (file contents):
Revision 3.1 by greg, Thu Nov 7 23:20:28 2019 UTC vs.
Revision 3.4 by greg, Mon Nov 11 16:45:30 2019 UTC

#	Line 1 | Line 1
1	+	#ifndef lint
2	+	static const char RCSid[] = "$Id$";
3	+	#endif
4		/*
5		* Function to open floating-point depth file, making sure it's
6		* the correct length, and converting from encoded 16-bit
#	Line 19 | Line 22 | open_float_depth(const char *fname, long expected_leng
22		{
23		int     fd = open(fname, O_RDONLY|O_BINARY);
24
25	<	if (fd < 0)
25	>	if (fd < 0) {
26	>	fprintf(stderr, "%s: cannot open for reading\n", fname);
27		return(-1);
28	+	}
29		if (expected_length > 0) {
30		off_t   flen = lseek(fd, 0, SEEK_END);
31		if (flen != expected_length*sizeof(float)) {
#	Line 52 | Line 57 | open_float_depth(const char *fname, long expected_leng
57		ssize_t         n, nleft;
58		int             fd = open(fname, O_RDONLY);
59
60	<	if (fd < 0)
60	>	if (fd < 0) {
61	>	perror(fname);
62		return(-1);
63	+	}
64		dc.finp = NULL;
65		if (expected_length <= 0) {     /* need to sniff file? */
66		extern const char       HDRSTR[];
67		const int               len = strlen(HDRSTR);
68	<	n = read(fd, buf, len+1);
69	<	if (n < len+1)
63	<	goto gotEOF;
68	>	if (read(fd, buf, len+1) < len+1)
69	>	goto badEOF;
70		if (lseek(fd, 0, SEEK_SET) != 0)
71		goto seek_error;
72		for (n = 0; n < len; n++)
73		if (buf[n] != HDRSTR[n])
74		break;
75	<	if (n < len || !isprint(buf[len]))
75	>	if ((n < len) | !isprint(buf[len]))
76		return(fd);     /* unknown length raw float... */
77		} else {
78		off_t   flen = lseek(fd, 0, SEEK_END);
#	Line 89 | Line 95 | open_float_depth(const char *fname, long expected_leng
95		fclose(dc.finp);        /* already reported error */
96		return(-1);
97		}
98	<	if (expected_length > 0 && (long)dc.res.xr*dc.res.yr != expected_length) {
98	>	if ((expected_length > 0) &
99	>	((long)dc.res.xr*dc.res.yr != expected_length)) {
100		fprintf(stderr, "%s: expected length is %ld, actual length is %ld\n",
101	<	fname, (long)expected_length, (long)dc.res.xr*dc.res.yr);
101	>	fname, expected_length, (long)dc.res.xr*dc.res.yr);
102		fclose(dc.finp);
103		return(-1);
104		}
105		strcpy(buf, TEMPLATE);          /* create temporary file to hold raw */
106		fd = mkstemp(buf);
107		if (fd < 0) {
108	<	fputs(buf, stderr);
102	<	fputs(": cannot create temporary file\n", stderr);
108	>	perror(buf);
109		fclose(dc.finp);
110		return(-1);
111		}
112	<	unlink(buf);                    /* unlink it now (Windows forbids) */
112	>	unlink(buf);                    /* preemptive remove (Windows forbids) */
113		for (nleft = (ssize_t)dc.res.xr*dc.res.yr; nleft > 0; nleft -= FBUFLEN) {
114		for (n = 0; n < FBUFLEN; n++) {
115		double  d = decode_depth_next(&dc);
116		if (d < 0) {
117		if (n < nleft)
118	<	goto gotEOF;
118	>	goto badEOF;
119		break;
120		}
121	<	((float *)buf)[n] = (float)d;
121	>	((float *)buf)[n] = d;
122		}
123		n *= sizeof(float);
124		if (write(fd, buf, n) != n) {
#	Line 126 | Line 132 | open_float_depth(const char *fname, long expected_leng
132		if (lseek(fd, 0, SEEK_SET) != 0)
133		goto seek_error;
134		return(fd);
135	<	gotEOF:
135	>	badEOF:
136		fputs(fname, stderr);
137		fputs(": unexpected end-of-file\n", stderr);
138		if (dc.finp) fclose(dc.finp);
#	Line 138 | Line 144 | seek_error:
144		return(-1);
145		}
146
147	<	#endif
147	>	#endif

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