Image negating filter
[libav.git] / cmdutils.c
1 /*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <string.h>
23 #include <stdlib.h>
24 #include <errno.h>
25
26 #include "avformat.h"
27 #include "avdevice.h"
28 #include "cmdutils.h"
29 #include "avstring.h"
30 #include "version.h"
31 #include "config.h"
32
33 #undef exit
34
35 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
36 {
37 const OptionDef *po;
38 int first;
39
40 first = 1;
41 for(po = options; po->name != NULL; po++) {
42 char buf[64];
43 if ((po->flags & mask) == value) {
44 if (first) {
45 printf("%s", msg);
46 first = 0;
47 }
48 av_strlcpy(buf, po->name, sizeof(buf));
49 if (po->flags & HAS_ARG) {
50 av_strlcat(buf, " ", sizeof(buf));
51 av_strlcat(buf, po->argname, sizeof(buf));
52 }
53 printf("-%-17s %s\n", buf, po->help);
54 }
55 }
56 }
57
58 static const OptionDef* find_option(const OptionDef *po, const char *name){
59 while (po->name != NULL) {
60 if (!strcmp(name, po->name))
61 break;
62 po++;
63 }
64 return po;
65 }
66
67 void parse_options(int argc, char **argv, const OptionDef *options,
68 void (* parse_arg_function)(const char*))
69 {
70 const char *opt, *arg;
71 int optindex, handleoptions=1;
72 const OptionDef *po;
73
74 /* parse options */
75 optindex = 1;
76 while (optindex < argc) {
77 opt = argv[optindex++];
78
79 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
80 if (opt[1] == '-' && opt[2] == '\0') {
81 handleoptions = 0;
82 continue;
83 }
84 po= find_option(options, opt + 1);
85 if (!po->name)
86 po= find_option(options, "default");
87 if (!po->name) {
88 unknown_opt:
89 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
90 exit(1);
91 }
92 arg = NULL;
93 if (po->flags & HAS_ARG) {
94 arg = argv[optindex++];
95 if (!arg) {
96 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
97 exit(1);
98 }
99 }
100 if (po->flags & OPT_STRING) {
101 char *str;
102 str = av_strdup(arg);
103 *po->u.str_arg = str;
104 } else if (po->flags & OPT_BOOL) {
105 *po->u.int_arg = 1;
106 } else if (po->flags & OPT_INT) {
107 *po->u.int_arg = atoi(arg);
108 } else if (po->flags & OPT_INT64) {
109 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
110 } else if (po->flags & OPT_FLOAT) {
111 *po->u.float_arg = atof(arg);
112 } else if (po->flags & OPT_FUNC2) {
113 if(po->u.func2_arg(opt+1, arg)<0)
114 goto unknown_opt;
115 } else {
116 po->u.func_arg(arg);
117 }
118 } else {
119 if (parse_arg_function)
120 parse_arg_function(opt);
121 }
122 }
123 }
124
125 void print_error(const char *filename, int err)
126 {
127 switch(err) {
128 case AVERROR_NUMEXPECTED:
129 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
130 "Use '%%d' to specify the image number:\n"
131 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
132 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
133 filename);
134 break;
135 case AVERROR_INVALIDDATA:
136 fprintf(stderr, "%s: Error while parsing header\n", filename);
137 break;
138 case AVERROR_NOFMT:
139 fprintf(stderr, "%s: Unknown format\n", filename);
140 break;
141 case AVERROR(EIO):
142 fprintf(stderr, "%s: I/O error occured\n"
143 "Usually that means that input file is truncated and/or corrupted.\n",
144 filename);
145 break;
146 case AVERROR(ENOMEM):
147 fprintf(stderr, "%s: memory allocation error occured\n", filename);
148 break;
149 case AVERROR(ENOENT):
150 fprintf(stderr, "%s: no such file or directory\n", filename);
151 break;
152 default:
153 fprintf(stderr, "%s: Error while opening file\n", filename);
154 break;
155 }
156 }
157
158 void show_banner(const char *program_name, int program_birth_year)
159 {
160 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
161 program_name, program_birth_year);
162 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
163 fprintf(stderr, " libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
164 fprintf(stderr, " libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
165 fprintf(stderr, " libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
166 fprintf(stderr, " libavdevice version: " AV_STRINGIFY(LIBAVDEVICE_VERSION) "\n");
167 fprintf(stderr, " built on " __DATE__ " " __TIME__);
168 #ifdef __GNUC__
169 fprintf(stderr, ", gcc: " __VERSION__ "\n");
170 #else
171 fprintf(stderr, ", using a non-gcc compiler\n");
172 #endif
173 }
174
175 void show_version(const char *program_name) {
176 /* TODO: add function interface to avutil and avformat avdevice*/
177 printf("%s " FFMPEG_VERSION "\n", program_name);
178 printf("libavutil %d\n"
179 "libavcodec %d\n"
180 "libavformat %d\n"
181 "libavdevice %d\n",
182 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD, LIBAVDEVICE_BUILD);
183 }
184
185 void show_license(void)
186 {
187 #ifdef CONFIG_NONFREE
188 printf(
189 "This version of FFmpeg has nonfree parts compiled in.\n"
190 "Therefore it is not legally redistributable.\n"
191 );
192 #elif CONFIG_GPL
193 printf(
194 "FFmpeg is free software; you can redistribute it and/or modify\n"
195 "it under the terms of the GNU General Public License as published by\n"
196 "the Free Software Foundation; either version 2 of the License, or\n"
197 "(at your option) any later version.\n"
198 "\n"
199 "FFmpeg is distributed in the hope that it will be useful,\n"
200 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
201 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
202 "GNU General Public License for more details.\n"
203 "\n"
204 "You should have received a copy of the GNU General Public License\n"
205 "along with FFmpeg; if not, write to the Free Software\n"
206 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
207 );
208 #else
209 printf(
210 "FFmpeg is free software; you can redistribute it and/or\n"
211 "modify it under the terms of the GNU Lesser General Public\n"
212 "License as published by the Free Software Foundation; either\n"
213 "version 2.1 of the License, or (at your option) any later version.\n"
214 "\n"
215 "FFmpeg is distributed in the hope that it will be useful,\n"
216 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
217 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
218 "Lesser General Public License for more details.\n"
219 "\n"
220 "You should have received a copy of the GNU Lesser General Public\n"
221 "License along with FFmpeg; if not, write to the Free Software\n"
222 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
223 );
224 #endif
225 }