1 |
greg |
2.1 |
#ifndef lint |
2 |
schorsch |
2.3 |
static const char RCSid[] = "$Id: ra_bmp.c,v 2.2 2004/03/27 05:43:37 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* program to convert between RADIANCE and Windows BMP file |
6 |
|
|
*/ |
7 |
|
|
|
8 |
|
|
#include <stdio.h> |
9 |
schorsch |
2.3 |
#include <string.h> |
10 |
|
|
|
11 |
greg |
2.1 |
#include "platform.h" |
12 |
|
|
#include "color.h" |
13 |
|
|
#include "resolu.h" |
14 |
|
|
#include "bmpfile.h" |
15 |
|
|
|
16 |
|
|
int bradj = 0; /* brightness adjustment */ |
17 |
|
|
|
18 |
|
|
double gamcor = 2.2; /* gamma correction value */ |
19 |
|
|
|
20 |
|
|
char *progname; |
21 |
|
|
|
22 |
schorsch |
2.3 |
static void quiterr(const char *); |
23 |
|
|
static void rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry); |
24 |
|
|
static void bmp2rad(BMPReader *brd, FILE *rfp, int inv); |
25 |
greg |
2.1 |
|
26 |
|
|
|
27 |
|
|
int |
28 |
|
|
main(int argc, char *argv[]) |
29 |
|
|
{ |
30 |
|
|
char *inpfile=NULL, *outfile=NULL; |
31 |
|
|
int gryflag = 0; |
32 |
|
|
int reverse = 0; |
33 |
|
|
RESOLU rs; |
34 |
|
|
int i; |
35 |
|
|
|
36 |
|
|
progname = argv[0]; |
37 |
|
|
|
38 |
|
|
for (i = 1; i < argc; i++) |
39 |
|
|
if (argv[i][0] == '-') |
40 |
|
|
switch (argv[i][1]) { |
41 |
|
|
case 'b': |
42 |
|
|
gryflag = 1; |
43 |
|
|
break; |
44 |
|
|
case 'g': |
45 |
|
|
gamcor = atof(argv[++i]); |
46 |
|
|
break; |
47 |
|
|
case 'e': |
48 |
|
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
49 |
|
|
goto userr; |
50 |
|
|
bradj = atoi(argv[++i]); |
51 |
|
|
break; |
52 |
|
|
case 'r': |
53 |
|
|
reverse = !reverse; |
54 |
|
|
break; |
55 |
|
|
case '\0': |
56 |
|
|
break; |
57 |
|
|
default: |
58 |
|
|
goto userr; |
59 |
|
|
} |
60 |
|
|
else |
61 |
|
|
break; |
62 |
|
|
|
63 |
|
|
if (i < argc-2) |
64 |
|
|
goto userr; |
65 |
|
|
|
66 |
|
|
SET_FILE_BINARY(stdin); |
67 |
|
|
SET_FILE_BINARY(stdout); |
68 |
|
|
SET_DEFAULT_BINARY(); |
69 |
|
|
|
70 |
|
|
if (i <= argc-1 && strcmp(argv[i], "-")) |
71 |
|
|
inpfile = argv[i]; |
72 |
|
|
|
73 |
|
|
if (i == argc-2 && strcmp(argv[i+1], "-")) |
74 |
|
|
outfile = argv[i+1]; |
75 |
|
|
|
76 |
|
|
setcolrgam(gamcor); /* set up conversion */ |
77 |
|
|
|
78 |
|
|
if (reverse) { |
79 |
|
|
BMPReader *rdr; |
80 |
|
|
/* open BMP file or stream */ |
81 |
|
|
if (inpfile != NULL) |
82 |
|
|
rdr = BMPopenInputFile(inpfile); |
83 |
|
|
else |
84 |
|
|
rdr = BMPopenInputStream(stdin); |
85 |
|
|
|
86 |
|
|
if (rdr == NULL) { |
87 |
|
|
fprintf(stderr, "%s: cannot open or recognize BMP\n", |
88 |
|
|
inpfile != NULL ? inpfile : "<stdin>"); |
89 |
|
|
exit(1); |
90 |
|
|
} |
91 |
|
|
/* open Radiance output */ |
92 |
|
|
if (outfile != NULL && freopen(outfile, "w", stdout) == NULL) { |
93 |
|
|
fprintf(stderr, "%s: cannot open for output\n", |
94 |
|
|
outfile); |
95 |
|
|
exit(1); |
96 |
|
|
} |
97 |
|
|
/* put Radiance header */ |
98 |
|
|
newheader("RADIANCE", stdout); |
99 |
|
|
printargs(i, argv, stdout); |
100 |
|
|
fputformat(COLRFMT, stdout); |
101 |
|
|
putchar('\n'); |
102 |
|
|
rs.xr = rdr->hdr->width; |
103 |
|
|
rs.yr = rdr->hdr->height; |
104 |
|
|
rs.rt = YMAJOR; |
105 |
greg |
2.2 |
/* write scans downward if we can */ |
106 |
greg |
2.1 |
if (rdr->hdr->yIsDown || inpfile != NULL) |
107 |
|
|
rs.rt |= YDECR; |
108 |
|
|
fputsresolu(&rs, stdout); |
109 |
|
|
/* convert file */ |
110 |
|
|
bmp2rad(rdr, stdout, !rdr->hdr->yIsDown && inpfile!=NULL); |
111 |
|
|
/* flush output */ |
112 |
greg |
2.2 |
BMPcloseInput(rdr); |
113 |
greg |
2.1 |
if (fflush(stdout) < 0) |
114 |
|
|
quiterr("error writing Radiance output"); |
115 |
|
|
} else { |
116 |
|
|
BMPHeader *hdr; |
117 |
|
|
BMPWriter *wtr; |
118 |
|
|
/* open Radiance input */ |
119 |
|
|
if (inpfile != NULL && freopen(inpfile, "r", stdin) == NULL) { |
120 |
|
|
fprintf(stderr, "%s: cannot open input file\n", |
121 |
|
|
inpfile); |
122 |
|
|
exit(1); |
123 |
|
|
} |
124 |
|
|
/* get header info. */ |
125 |
|
|
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
126 |
|
|
!fgetsresolu(&rs, stdin)) |
127 |
|
|
quiterr("bad Radiance picture format"); |
128 |
|
|
/* initialize BMP header */ |
129 |
greg |
2.2 |
if (gryflag) { |
130 |
greg |
2.1 |
hdr = BMPmappedHeader(numscans(&rs), |
131 |
|
|
scanlen(&rs), 0, 256); |
132 |
greg |
2.2 |
if (outfile != NULL) |
133 |
|
|
hdr->compr = BI_RLE8; |
134 |
|
|
} else |
135 |
greg |
2.1 |
hdr = BMPtruecolorHeader(numscans(&rs), |
136 |
|
|
scanlen(&rs), 0); |
137 |
|
|
if (hdr == NULL) |
138 |
|
|
quiterr("cannot initialize BMP header"); |
139 |
greg |
2.2 |
/* set up output direction */ |
140 |
|
|
hdr->yIsDown = (rs.rt & YDECR) && |
141 |
schorsch |
2.3 |
((outfile == NULL) | (hdr->compr == BI_RLE8)); |
142 |
greg |
2.1 |
/* open BMP output */ |
143 |
|
|
if (outfile != NULL) |
144 |
|
|
wtr = BMPopenOutputFile(outfile, hdr); |
145 |
|
|
else |
146 |
|
|
wtr = BMPopenOutputStream(stdout, hdr); |
147 |
greg |
2.2 |
if (wtr == NULL) |
148 |
|
|
quiterr("cannot allocate writer structure"); |
149 |
greg |
2.1 |
/* convert file */ |
150 |
|
|
rad2bmp(stdin, wtr, !hdr->yIsDown && (rs.rt&YDECR), gryflag); |
151 |
|
|
/* flush output */ |
152 |
|
|
if (fflush((FILE *)wtr->c_data) < 0) |
153 |
|
|
quiterr("error writing BMP output"); |
154 |
greg |
2.2 |
BMPcloseOutput(wtr); |
155 |
greg |
2.1 |
} |
156 |
|
|
exit(0); /* success */ |
157 |
|
|
userr: |
158 |
|
|
fprintf(stderr, |
159 |
|
|
"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n", |
160 |
|
|
progname); |
161 |
|
|
exit(1); |
162 |
greg |
2.2 |
return(1); /* gratis return */ |
163 |
greg |
2.1 |
} |
164 |
|
|
|
165 |
|
|
/* print message and exit */ |
166 |
schorsch |
2.3 |
static void |
167 |
greg |
2.1 |
quiterr(const char *err) |
168 |
|
|
{ |
169 |
|
|
if (err != NULL) { |
170 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
171 |
|
|
exit(1); |
172 |
|
|
} |
173 |
|
|
exit(0); |
174 |
|
|
} |
175 |
|
|
|
176 |
|
|
/* convert Radiance picture to BMP */ |
177 |
schorsch |
2.3 |
static void |
178 |
greg |
2.1 |
rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry) |
179 |
|
|
{ |
180 |
|
|
COLR *scanin; |
181 |
|
|
int y, yend, ystp; |
182 |
|
|
int x; |
183 |
|
|
/* allocate scanline */ |
184 |
|
|
scanin = (COLR *)malloc(bwr->hdr->width*sizeof(COLR)); |
185 |
|
|
if (scanin == NULL) |
186 |
|
|
quiterr("out of memory in rad2bmp"); |
187 |
|
|
/* convert image */ |
188 |
|
|
if (inv) { |
189 |
|
|
y = bwr->hdr->height - 1; |
190 |
|
|
ystp = -1; yend = -1; |
191 |
|
|
} else { |
192 |
|
|
y = 0; |
193 |
|
|
ystp = 1; yend = bwr->hdr->height; |
194 |
|
|
} |
195 |
|
|
/* convert each scanline */ |
196 |
|
|
for ( ; y != yend; y += ystp) { |
197 |
|
|
if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0) |
198 |
|
|
quiterr("error reading Radiance picture"); |
199 |
|
|
if (bradj) |
200 |
|
|
shiftcolrs(scanin, bwr->hdr->width, bradj); |
201 |
|
|
for (x = gry ? bwr->hdr->width : 0; x--; ) |
202 |
|
|
scanin[x][GRN] = normbright(scanin[x]); |
203 |
|
|
colrs_gambs(scanin, bwr->hdr->width); |
204 |
|
|
if (gry) |
205 |
|
|
for (x = bwr->hdr->width; x--; ) |
206 |
|
|
bwr->scanline[x] = scanin[x][GRN]; |
207 |
|
|
else |
208 |
|
|
for (x = bwr->hdr->width; x--; ) { |
209 |
|
|
bwr->scanline[3*x] = scanin[x][BLU]; |
210 |
|
|
bwr->scanline[3*x+1] = scanin[x][GRN]; |
211 |
|
|
bwr->scanline[3*x+2] = scanin[x][RED]; |
212 |
|
|
} |
213 |
|
|
bwr->yscan = y; |
214 |
|
|
x = BMPwriteScanline(bwr); |
215 |
|
|
if (x != BIR_OK) |
216 |
|
|
quiterr(BMPerrorMessage(x)); |
217 |
|
|
} |
218 |
|
|
/* free scanline */ |
219 |
|
|
free((void *)scanin); |
220 |
|
|
} |
221 |
|
|
|
222 |
|
|
/* convert BMP file to Radiance */ |
223 |
schorsch |
2.3 |
static void |
224 |
greg |
2.1 |
bmp2rad(BMPReader *brd, FILE *rfp, int inv) |
225 |
|
|
{ |
226 |
|
|
COLR *scanout; |
227 |
|
|
int y, yend, ystp; |
228 |
|
|
int x; |
229 |
|
|
/* allocate scanline */ |
230 |
|
|
scanout = (COLR *)malloc(brd->hdr->width*sizeof(COLR)); |
231 |
|
|
if (scanout == NULL) |
232 |
|
|
quiterr("out of memory in bmp2rad"); |
233 |
|
|
/* convert image */ |
234 |
|
|
if (inv) { |
235 |
|
|
y = brd->hdr->height - 1; |
236 |
|
|
ystp = -1; yend = -1; |
237 |
|
|
} else { |
238 |
|
|
y = 0; |
239 |
|
|
ystp = 1; yend = brd->hdr->height; |
240 |
|
|
} |
241 |
|
|
/* convert each scanline */ |
242 |
|
|
for ( ; y != yend; y += ystp) { |
243 |
|
|
x = BMPseekScanline(y, brd); |
244 |
|
|
if (x != BIR_OK) |
245 |
|
|
quiterr(BMPerrorMessage(x)); |
246 |
|
|
for (x = brd->hdr->width; x--; ) { |
247 |
|
|
RGBquad rgbq = BMPdecodePixel(x, brd); |
248 |
|
|
scanout[x][RED] = rgbq.r; |
249 |
|
|
scanout[x][GRN] = rgbq.g; |
250 |
|
|
scanout[x][BLU] = rgbq.b; |
251 |
|
|
} |
252 |
|
|
gambs_colrs(scanout, brd->hdr->width); |
253 |
|
|
if (bradj) |
254 |
|
|
shiftcolrs(scanout, brd->hdr->width, bradj); |
255 |
|
|
if (fwritecolrs(scanout, brd->hdr->width, rfp) < 0) |
256 |
|
|
quiterr("error writing Radiance picture"); |
257 |
|
|
} |
258 |
|
|
/* clean up */ |
259 |
|
|
free((void *)scanout); |
260 |
|
|
} |