parse_number_or_die()
[libav.git] / cmdutils.c
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1/*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
01310af2 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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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
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
01310af2 20 */
364a9607 21
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22#include <string.h>
23#include <stdlib.h>
24#include <errno.h>
25
01310af2 26#include "avformat.h"
2208741a 27#include "avdevice.h"
01310af2 28#include "cmdutils.h"
f7d78f36 29#include "avstring.h"
86074ed1 30#include "version.h"
b6cd8593 31#include "config.h"
01310af2 32
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33#undef exit
34
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35
36double 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
02d504a7 53void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
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54{
55 const OptionDef *po;
02d504a7 56 int first;
01310af2 57
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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 }
f7d78f36 66 av_strlcpy(buf, po->name, sizeof(buf));
02d504a7 67 if (po->flags & HAS_ARG) {
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68 av_strlcat(buf, " ", sizeof(buf));
69 av_strlcat(buf, po->argname, sizeof(buf));
01310af2 70 }
02d504a7 71 printf("-%-17s %s\n", buf, po->help);
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72 }
73 }
74}
75
fccfc475 76static const OptionDef* find_option(const OptionDef *po, const char *name){
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77 while (po->name != NULL) {
78 if (!strcmp(name, po->name))
79 break;
80 po++;
81 }
82 return po;
83}
84
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85void parse_options(int argc, char **argv, const OptionDef *options,
86 void (* parse_arg_function)(const char*))
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87{
88 const char *opt, *arg;
b0d7bc1e 89 int optindex, handleoptions=1;
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90 const OptionDef *po;
91
92 /* parse options */
93 optindex = 1;
94 while (optindex < argc) {
95 opt = argv[optindex++];
115329f1 96
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97 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
98 if (opt[1] == '-' && opt[2] == '\0') {
99 handleoptions = 0;
100 continue;
101 }
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102 po= find_option(options, opt + 1);
103 if (!po->name)
104 po= find_option(options, "default");
01310af2 105 if (!po->name) {
8bbf6db9 106unknown_opt:
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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;
02d504a7 120 str = av_strdup(arg);
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121 *po->u.str_arg = str;
122 } else if (po->flags & OPT_BOOL) {
123 *po->u.int_arg = 1;
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124 } else if (po->flags & OPT_INT) {
125 *po->u.int_arg = atoi(arg);
ffdf9a1f 126 } else if (po->flags & OPT_INT64) {
946d3b12 127 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
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128 } else if (po->flags & OPT_FLOAT) {
129 *po->u.float_arg = atof(arg);
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130 } else if (po->flags & OPT_FUNC2) {
131 if(po->u.func2_arg(opt+1, arg)<0)
132 goto unknown_opt;
01310af2 133 } else {
bb270c08 134 po->u.func_arg(arg);
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135 }
136 } else {
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137 if (parse_arg_function)
138 parse_arg_function(opt);
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139 }
140 }
141}
142
143void 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"
115329f1 150 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
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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;
6f3e0b21 159 case AVERROR(EIO):
45ce5ddb 160 fprintf(stderr, "%s: I/O error occured\n"
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161 "Usually that means that input file is truncated and/or corrupted.\n",
162 filename);
45ce5ddb 163 break;
769e10f0 164 case AVERROR(ENOMEM):
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165 fprintf(stderr, "%s: memory allocation error occured\n", filename);
166 break;
24fddf48 167 case AVERROR(ENOENT):
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168 fprintf(stderr, "%s: no such file or directory\n", filename);
169 break;
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170 default:
171 fprintf(stderr, "%s: Error while opening file\n", filename);
172 break;
173 }
174}
f35917b2 175
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176void show_banner(const char *program_name, int program_birth_year)
177{
69c12fbb 178 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
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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");
2208741a 184 fprintf(stderr, " libavdevice version: " AV_STRINGIFY(LIBAVDEVICE_VERSION) "\n");
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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
193void show_version(const char *program_name) {
2208741a 194 /* TODO: add function interface to avutil and avformat avdevice*/
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195 printf("%s " FFMPEG_VERSION "\n", program_name);
196 printf("libavutil %d\n"
197 "libavcodec %d\n"
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198 "libavformat %d\n"
199 "libavdevice %d\n",
200 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD, LIBAVDEVICE_BUILD);
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201}
202
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203void show_license(void)
204{
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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
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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}