04130ffa322ce716c1918f8dd243eb4cf52f0d92
[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 #include <math.h>
26
27 #include "config.h"
28 #include "libavformat/avformat.h"
29 #include "libavfilter/avfilter.h"
30 #include "libavdevice/avdevice.h"
31 #include "libavutil/avstring.h"
32 #include "cmdutils.h"
33 #include "version.h"
34 #ifdef CONFIG_NETWORK
35 #include "libavformat/network.h"
36 #endif
37
38 #undef exit
39
40
41 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
42 {
43 char *tail;
44 const char *error;
45 double d = strtod(numstr, &tail);
46 if (*tail)
47 error= "Expected number for %s but found: %s\n";
48 else if (d < min || d > max)
49 error= "The value for %s was %s which is not within %f - %f\n";
50 else if(type == OPT_INT64 && (int64_t)d != d)
51 error= "Expected int64 for %s but found %s\n";
52 else
53 return d;
54 fprintf(stderr, error, context, numstr, min, max);
55 exit(1);
56 }
57
58 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
59 {
60 int64_t us = parse_date(timestr, is_duration);
61 if (us == INT64_MIN) {
62 fprintf(stderr, "Invalid %s specification for %s: %s\n",
63 is_duration ? "duration" : "date", context, timestr);
64 exit(1);
65 }
66 return us;
67 }
68
69 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
70 {
71 const OptionDef *po;
72 int first;
73
74 first = 1;
75 for(po = options; po->name != NULL; po++) {
76 char buf[64];
77 if ((po->flags & mask) == value) {
78 if (first) {
79 printf("%s", msg);
80 first = 0;
81 }
82 av_strlcpy(buf, po->name, sizeof(buf));
83 if (po->flags & HAS_ARG) {
84 av_strlcat(buf, " ", sizeof(buf));
85 av_strlcat(buf, po->argname, sizeof(buf));
86 }
87 printf("-%-17s %s\n", buf, po->help);
88 }
89 }
90 }
91
92 static const OptionDef* find_option(const OptionDef *po, const char *name){
93 while (po->name != NULL) {
94 if (!strcmp(name, po->name))
95 break;
96 po++;
97 }
98 return po;
99 }
100
101 void parse_options(int argc, char **argv, const OptionDef *options,
102 void (* parse_arg_function)(const char*))
103 {
104 const char *opt, *arg;
105 int optindex, handleoptions=1;
106 const OptionDef *po;
107
108 /* parse options */
109 optindex = 1;
110 while (optindex < argc) {
111 opt = argv[optindex++];
112
113 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
114 if (opt[1] == '-' && opt[2] == '\0') {
115 handleoptions = 0;
116 continue;
117 }
118 po= find_option(options, opt + 1);
119 if (!po->name)
120 po= find_option(options, "default");
121 if (!po->name) {
122 unknown_opt:
123 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
124 exit(1);
125 }
126 arg = NULL;
127 if (po->flags & HAS_ARG) {
128 arg = argv[optindex++];
129 if (!arg) {
130 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
131 exit(1);
132 }
133 }
134 if (po->flags & OPT_STRING) {
135 char *str;
136 str = av_strdup(arg);
137 *po->u.str_arg = str;
138 } else if (po->flags & OPT_BOOL) {
139 *po->u.int_arg = 1;
140 } else if (po->flags & OPT_INT) {
141 *po->u.int_arg = parse_number_or_die(opt+1, arg, OPT_INT64, INT_MIN, INT_MAX);
142 } else if (po->flags & OPT_INT64) {
143 *po->u.int64_arg = parse_number_or_die(opt+1, arg, OPT_INT64, INT64_MIN, INT64_MAX);
144 } else if (po->flags & OPT_FLOAT) {
145 *po->u.float_arg = parse_number_or_die(opt+1, arg, OPT_FLOAT, -1.0/0.0, 1.0/0.0);
146 } else if (po->flags & OPT_FUNC2) {
147 if(po->u.func2_arg(opt+1, arg)<0)
148 goto unknown_opt;
149 } else {
150 po->u.func_arg(arg);
151 }
152 if(po->flags & OPT_EXIT)
153 exit(0);
154 } else {
155 if (parse_arg_function)
156 parse_arg_function(opt);
157 }
158 }
159 }
160
161 void print_error(const char *filename, int err)
162 {
163 switch(err) {
164 case AVERROR_NUMEXPECTED:
165 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
166 "Use '%%d' to specify the image number:\n"
167 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
168 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
169 filename);
170 break;
171 case AVERROR_INVALIDDATA:
172 fprintf(stderr, "%s: Error while parsing header\n", filename);
173 break;
174 case AVERROR_NOFMT:
175 fprintf(stderr, "%s: Unknown format\n", filename);
176 break;
177 case AVERROR(EIO):
178 fprintf(stderr, "%s: I/O error occurred\n"
179 "Usually that means that input file is truncated and/or corrupted.\n",
180 filename);
181 break;
182 case AVERROR(ENOMEM):
183 fprintf(stderr, "%s: memory allocation error occurred\n", filename);
184 break;
185 case AVERROR(ENOENT):
186 fprintf(stderr, "%s: no such file or directory\n", filename);
187 break;
188 #ifdef CONFIG_NETWORK
189 case AVERROR(FF_NETERROR(EPROTONOSUPPORT)):
190 fprintf(stderr, "%s: Unsupported network protocol\n", filename);
191 break;
192 #endif
193 default:
194 fprintf(stderr, "%s: Error while opening file\n", filename);
195 break;
196 }
197 }
198
199 void show_banner(const char *program_name, int program_birth_year)
200 {
201 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
202 program_name, program_birth_year);
203 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
204 fprintf(stderr, " libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
205 fprintf(stderr, " libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
206 fprintf(stderr, " libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
207 fprintf(stderr, " libavdevice version: " AV_STRINGIFY(LIBAVDEVICE_VERSION) "\n");
208 #if ENABLE_AVFILTER
209 fprintf(stderr, " libavfilter version: " AV_STRINGIFY(LIBAVFILTER_VERSION) "\n");
210 #endif
211 fprintf(stderr, " built on " __DATE__ " " __TIME__);
212 #ifdef __GNUC__
213 fprintf(stderr, ", gcc: " __VERSION__ "\n");
214 #else
215 fprintf(stderr, ", using a non-gcc compiler\n");
216 #endif
217 }
218
219 void show_version(void) {
220 /* TODO: add function interface to avutil and avformat avdevice*/
221 printf("%s " FFMPEG_VERSION "\n", program_name);
222 printf("libavutil %d\n"
223 "libavcodec %d\n"
224 "libavformat %d\n"
225 "libavdevice %d\n",
226 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD, LIBAVDEVICE_BUILD);
227 }
228
229 void show_license(void)
230 {
231 #ifdef CONFIG_NONFREE
232 printf(
233 "This version of FFmpeg has nonfree parts compiled in.\n"
234 "Therefore it is not legally redistributable.\n"
235 );
236 #elif CONFIG_GPL
237 printf(
238 "FFmpeg is free software; you can redistribute it and/or modify\n"
239 "it under the terms of the GNU General Public License as published by\n"
240 "the Free Software Foundation; either version 2 of the License, or\n"
241 "(at your option) any later version.\n"
242 "\n"
243 "FFmpeg is distributed in the hope that it will be useful,\n"
244 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
245 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
246 "GNU General Public License for more details.\n"
247 "\n"
248 "You should have received a copy of the GNU General Public License\n"
249 "along with FFmpeg; if not, write to the Free Software\n"
250 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
251 );
252 #else
253 printf(
254 "FFmpeg is free software; you can redistribute it and/or\n"
255 "modify it under the terms of the GNU Lesser General Public\n"
256 "License as published by the Free Software Foundation; either\n"
257 "version 2.1 of the License, or (at your option) any later version.\n"
258 "\n"
259 "FFmpeg is distributed in the hope that it will be useful,\n"
260 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
261 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
262 "Lesser General Public License for more details.\n"
263 "\n"
264 "You should have received a copy of the GNU Lesser General Public\n"
265 "License along with FFmpeg; if not, write to the Free Software\n"
266 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
267 );
268 #endif
269 }