c01a6df247bc3e7c80c52d924827bab5f523c598
[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
36 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
37 {
38 char *tail;
39 const char *error;
40 double d = strtod(numstr, &tail);
41 if (*tail)
42 error= "Expected number for %s but found: %s\n";
43 else if (d < min || d > max)
44 error= "The value for %s was %s which is not within %f - %f\n";
45 else if(type == OPT_INT64 && (int64_t)d != d)
46 error= "Expected int64 for %s but found %s\n";
47 else
48 return d;
49 fprintf(stderr, error, context, numstr, min, max);
50 exit(1);
51 }
52
53 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
54 {
55 const OptionDef *po;
56 int first;
57
58 first = 1;
59 for(po = options; po->name != NULL; po++) {
60 char buf[64];
61 if ((po->flags & mask) == value) {
62 if (first) {
63 printf("%s", msg);
64 first = 0;
65 }
66 av_strlcpy(buf, po->name, sizeof(buf));
67 if (po->flags & HAS_ARG) {
68 av_strlcat(buf, " ", sizeof(buf));
69 av_strlcat(buf, po->argname, sizeof(buf));
70 }
71 printf("-%-17s %s\n", buf, po->help);
72 }
73 }
74 }
75
76 static const OptionDef* find_option(const OptionDef *po, const char *name){
77 while (po->name != NULL) {
78 if (!strcmp(name, po->name))
79 break;
80 po++;
81 }
82 return po;
83 }
84
85 void parse_options(int argc, char **argv, const OptionDef *options,
86 void (* parse_arg_function)(const char*))
87 {
88 const char *opt, *arg;
89 int optindex, handleoptions=1;
90 const OptionDef *po;
91
92 /* parse options */
93 optindex = 1;
94 while (optindex < argc) {
95 opt = argv[optindex++];
96
97 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
98 if (opt[1] == '-' && opt[2] == '\0') {
99 handleoptions = 0;
100 continue;
101 }
102 po= find_option(options, opt + 1);
103 if (!po->name)
104 po= find_option(options, "default");
105 if (!po->name) {
106 unknown_opt:
107 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
108 exit(1);
109 }
110 arg = NULL;
111 if (po->flags & HAS_ARG) {
112 arg = argv[optindex++];
113 if (!arg) {
114 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
115 exit(1);
116 }
117 }
118 if (po->flags & OPT_STRING) {
119 char *str;
120 str = av_strdup(arg);
121 *po->u.str_arg = str;
122 } else if (po->flags & OPT_BOOL) {
123 *po->u.int_arg = 1;
124 } else if (po->flags & OPT_INT) {
125 *po->u.int_arg = atoi(arg);
126 } else if (po->flags & OPT_INT64) {
127 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
128 } else if (po->flags & OPT_FLOAT) {
129 *po->u.float_arg = atof(arg);
130 } else if (po->flags & OPT_FUNC2) {
131 if(po->u.func2_arg(opt+1, arg)<0)
132 goto unknown_opt;
133 } else {
134 po->u.func_arg(arg);
135 }
136 } else {
137 if (parse_arg_function)
138 parse_arg_function(opt);
139 }
140 }
141 }
142
143 void print_error(const char *filename, int err)
144 {
145 switch(err) {
146 case AVERROR_NUMEXPECTED:
147 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
148 "Use '%%d' to specify the image number:\n"
149 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
150 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
151 filename);
152 break;
153 case AVERROR_INVALIDDATA:
154 fprintf(stderr, "%s: Error while parsing header\n", filename);
155 break;
156 case AVERROR_NOFMT:
157 fprintf(stderr, "%s: Unknown format\n", filename);
158 break;
159 case AVERROR(EIO):
160 fprintf(stderr, "%s: I/O error occured\n"
161 "Usually that means that input file is truncated and/or corrupted.\n",
162 filename);
163 break;
164 case AVERROR(ENOMEM):
165 fprintf(stderr, "%s: memory allocation error occured\n", filename);
166 break;
167 case AVERROR(ENOENT):
168 fprintf(stderr, "%s: no such file or directory\n", filename);
169 break;
170 default:
171 fprintf(stderr, "%s: Error while opening file\n", filename);
172 break;
173 }
174 }
175
176 void show_banner(const char *program_name, int program_birth_year)
177 {
178 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
179 program_name, program_birth_year);
180 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
181 fprintf(stderr, " libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
182 fprintf(stderr, " libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
183 fprintf(stderr, " libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
184 fprintf(stderr, " libavdevice version: " AV_STRINGIFY(LIBAVDEVICE_VERSION) "\n");
185 fprintf(stderr, " built on " __DATE__ " " __TIME__);
186 #ifdef __GNUC__
187 fprintf(stderr, ", gcc: " __VERSION__ "\n");
188 #else
189 fprintf(stderr, ", using a non-gcc compiler\n");
190 #endif
191 }
192
193 void show_version(const char *program_name) {
194 /* TODO: add function interface to avutil and avformat avdevice*/
195 printf("%s " FFMPEG_VERSION "\n", program_name);
196 printf("libavutil %d\n"
197 "libavcodec %d\n"
198 "libavformat %d\n"
199 "libavdevice %d\n",
200 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD, LIBAVDEVICE_BUILD);
201 }
202
203 void show_license(void)
204 {
205 #ifdef CONFIG_NONFREE
206 printf(
207 "This version of FFmpeg has nonfree parts compiled in.\n"
208 "Therefore it is not legally redistributable.\n"
209 );
210 #elif CONFIG_GPL
211 printf(
212 "FFmpeg is free software; you can redistribute it and/or modify\n"
213 "it under the terms of the GNU General Public License as published by\n"
214 "the Free Software Foundation; either version 2 of the License, or\n"
215 "(at your option) any later version.\n"
216 "\n"
217 "FFmpeg is distributed in the hope that it will be useful,\n"
218 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
219 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
220 "GNU General Public License for more details.\n"
221 "\n"
222 "You should have received a copy of the GNU General Public License\n"
223 "along with FFmpeg; if not, write to the Free Software\n"
224 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
225 );
226 #else
227 printf(
228 "FFmpeg is free software; you can redistribute it and/or\n"
229 "modify it under the terms of the GNU Lesser General Public\n"
230 "License as published by the Free Software Foundation; either\n"
231 "version 2.1 of the License, or (at your option) any later version.\n"
232 "\n"
233 "FFmpeg is distributed in the hope that it will be useful,\n"
234 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
235 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
236 "Lesser General Public License for more details.\n"
237 "\n"
238 "You should have received a copy of the GNU Lesser General Public\n"
239 "License along with FFmpeg; if not, write to the Free Software\n"
240 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
241 );
242 #endif
243 }