source: trunk/JPGPROC/source/gbmsrc/gbmsub.c@ 2

Last change on this file since 2 was 2, checked in by stevenhl, 8 years ago

Import sources from cwmm-full.zip dated 2005-03-21
File size: 5.9 KB
Line 
1/*
2
3gbmsub.c - Subrectangle of General Bitmap
4
5*/
6
7/*...sincludes:0:*/
8#include <stdio.h>
9#include <ctype.h>
10#include <string.h>
11#include <stddef.h>
12#include <stdlib.h>
13#include <stdarg.h>
14#if defined(AIX) || defined(LINUX) || defined(MAC)
15#include <unistd.h>
16#else
17#include <io.h>
18#endif
19#include <fcntl.h>
20#ifdef MAC
21#include <types.h>
22#include <stat.h>
23#else
24#include <sys/types.h>
25#include <sys/stat.h>
26#endif
27#ifndef O_BINARY
28#define O_BINARY 0
29#endif
30#include "gbm.h"
31#include "gbmrect.h"
32
33/*...vgbm\46\h:0:*/
34/*...vgbmrect\46\h:0:*/
35/*...e*/
36
37static char progname[] = "gbmsub";
38
39/*...sfatal:0:*/
40static void fatal(const char *fmt, ...)
41 {
42 va_list vars;
43 char s[256+1];
44
45 va_start(vars, fmt);
46 vsprintf(s, fmt, vars);
47 va_end(vars);
48 fprintf(stderr, "%s: %s\n", progname, s);
49 exit(1);
50 }
51/*...e*/
52/*...susage:0:*/
53static void usage(void)
54 {
55 int ft, n_ft;
56
57 fprintf(stderr, "usage: %s [-x x] [-y y] [-w w] [-h h] [--] fn1.ext{,opt} [fn2.ext{,opt}]\n", progname);
58 fprintf(stderr, "flags: -x x left edge of rectangle (default 0)\n");
59 fprintf(stderr, " -y y bottom edge of rectangle (default 0)\n");
60 fprintf(stderr, " -w w width of rectangle (default width of image - x)\n");
61 fprintf(stderr, " -h h height of rectangle (default height of image - y)\n");
62 fprintf(stderr, " fn1.ext{,opt} input filename (with any format specific options)\n");
63 fprintf(stderr, " fn2.ext{,opt} optional output filename (or will use fn1 if not present)\n");
64 fprintf(stderr, " ext's are used to deduce desired bitmap file formats\n");
65
66 gbm_init();
67 gbm_query_n_filetypes(&n_ft);
68 for ( ft = 0; ft < n_ft; ft++ )
69 {
70 GBMFT gbmft;
71
72 gbm_query_filetype(ft, &gbmft);
73 fprintf(stderr, " %s when ext in [%s]\n",
74 gbmft.short_name, gbmft.extensions);
75 }
76 gbm_deinit();
77
78 fprintf(stderr, " opt's bitmap format specific options\n");
79
80 exit(1);
81 }
82/*...e*/
83/*...sget_opt_value:0:*/
84static int get_opt_value(const char *s, const char *name)
85 {
86 int v;
87
88 if ( s == NULL )
89 fatal("missing %s argument", name);
90 if ( !isdigit(s[0]) )
91 fatal("bad %s argument", name);
92 if ( s[0] == '0' && tolower(s[1]) == 'x' )
93 sscanf(s + 2, "%x", &v);
94 else
95 v = atoi(s);
96
97 return v;
98 }
99/*...e*/
100/*...sget_opt_value_pos:0:*/
101static int get_opt_value_pos(const char *s, const char *name)
102 {
103 int n;
104
105 if ( (n = get_opt_value(s, name)) < 0 )
106 fatal("%s should not be negative", name);
107 return n;
108 }
109/*...e*/
110/*...smain:0:*/
111int main(int argc, char *argv[])
112 {
113 int x = 0, y = 0, w = -1, h = -1;
114 char fn_src[500+1], fn_dst[500+1], *opt_src, *opt_dst;
115 int fd, ft_src, ft_dst, i, stride_src, flag, bytes;
116 GBM_ERR rc;
117 GBMFT gbmft;
118 GBM gbm;
119 GBMRGB gbmrgb[0x100];
120 byte *data;
121
122 for ( i = 1; i < argc; i++ )
123 {
124 if ( argv[i][0] != '-' )
125 break;
126 else if ( argv[i][1] == '-' )
127 { ++i; break; }
128 switch ( argv[i][1] )
129 {
130 case 'x':
131 if ( ++i == argc ) usage();
132 x = get_opt_value_pos(argv[i], "x");
133 break;
134 case 'y':
135 if ( ++i == argc ) usage();
136 y = get_opt_value_pos(argv[i], "y");
137 break;
138 case 'w':
139 if ( ++i == argc ) usage();
140 w = get_opt_value_pos(argv[i], "w");
141 break;
142 case 'h':
143 if ( ++i == argc ) usage();
144 h = get_opt_value_pos(argv[i], "h");
145 break;
146 default:
147 usage();
148 break;
149 }
150 }
151
152 if ( i == argc )
153 usage();
154 strcpy(fn_src, argv[i++]);
155 strcpy(fn_dst, ( i == argc ) ? fn_src : argv[i++]);
156 if ( i < argc )
157 usage();
158
159 if ( (opt_src = strchr(fn_src, ',')) != NULL )
160 *opt_src++ = '\0';
161 else
162 opt_src = "";
163
164 if ( (opt_dst = strchr(fn_dst, ',')) != NULL )
165 *opt_dst++ = '\0';
166 else
167 opt_dst = "";
168
169 gbm_init();
170
171 if ( gbm_guess_filetype(fn_src, &ft_src) != GBM_ERR_OK )
172 fatal("can't guess bitmap file format for %s", fn_src);
173
174 if ( gbm_guess_filetype(fn_dst, &ft_dst) != GBM_ERR_OK )
175 fatal("can't guess bitmap file format for %s", fn_dst);
176
177 if ( (fd = gbm_io_open(fn_src, O_RDONLY|O_BINARY)) == -1 )
178 fatal("can't open %s", fn_src);
179
180 if ( (rc = gbm_read_header(fn_src, fd, ft_src, &gbm, opt_src)) != GBM_ERR_OK )
181 {
182 gbm_io_close(fd);
183 fatal("can't read header of %s: %s", fn_src, gbm_err(rc));
184 }
185
186 if ( w == -1 )
187 w = gbm.w - x;
188
189 if ( h == -1 )
190 h = gbm.h - y;
191
192 if ( w == 0 ) { gbm_io_close(fd); fatal("w = 0"); }
193 if ( h == 0 ) { gbm_io_close(fd); fatal("h = 0"); }
194 if ( x >= gbm.w ) { gbm_io_close(fd); fatal("x >= bitmap width"); }
195 if ( y >= gbm.h ) { gbm_io_close(fd); fatal("y >= bitmap height"); }
196 if ( x + w > gbm.w ) { gbm_io_close(fd); fatal("x+w > bitmap width"); }
197 if ( y + h > gbm.h ) { gbm_io_close(fd); fatal("y+h > bitmap height"); }
198
199 gbm_query_filetype(ft_dst, &gbmft);
200 switch ( gbm.bpp )
201 {
202 case 24: flag = GBM_FT_W24; break;
203 case 8: flag = GBM_FT_W8; break;
204 case 4: flag = GBM_FT_W4; break;
205 case 1: flag = GBM_FT_W1; break;
206 }
207 if ( (gbmft.flags & flag) == 0 )
208 {
209 gbm_io_close(fd);
210 fatal("output bitmap format %s does not support writing %d bpp data",
211 gbmft.short_name, gbm.bpp);
212 }
213
214 if ( (rc = gbm_read_palette(fd, ft_src, &gbm, gbmrgb)) != GBM_ERR_OK )
215 {
216 gbm_io_close(fd);
217 fatal("can't read palette of %s: %s", fn_src, gbm_err(rc));
218 }
219
220 stride_src = ( ((gbm.w * gbm.bpp + 31)/32) * 4 );
221 bytes = stride_src * gbm.h;
222 if ( (data = malloc((size_t) bytes)) == NULL )
223 {
224 gbm_io_close(fd);
225 fatal("out of memory allocating %d bytes for bitmap", bytes);
226 }
227
228 if ( (rc = gbm_read_data(fd, ft_src, &gbm, data)) != GBM_ERR_OK )
229 {
230 gbm_io_close(fd);
231 fatal("can't read bitmap data of %s: %s", fn_src, gbm_err(rc));
232 }
233
234 gbm_io_close(fd);
235
236 gbm_subrectangle(&gbm, x, y, w, h, data, data);
237
238 if ( (fd = gbm_io_create(fn_dst, O_WRONLY|O_BINARY)) == -1 )
239 fatal("can't create %s", fn_dst);
240
241 gbm.w = w;
242 gbm.h = h;
243
244 if ( (rc = gbm_write(fn_dst, fd, ft_dst, &gbm, gbmrgb, data, opt_dst)) != GBM_ERR_OK )
245 {
246 gbm_io_close(fd);
247 remove(fn_dst);
248 fatal("can't write %s: %s", fn_dst, gbm_err(rc));
249 }
250
251 gbm_io_close(fd);
252
253 free(data);
254
255 gbm_deinit();
256
257 return 0;
258 }
259/*...e*/
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