Add myself as a maintainer for the RTP muxer and for the SDP generator
[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"
01310af2 27#include "cmdutils.h"
f7d78f36 28#include "avstring.h"
01310af2 29
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30#undef exit
31
02d504a7 32void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
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33{
34 const OptionDef *po;
02d504a7 35 int first;
01310af2 36
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37 first = 1;
38 for(po = options; po->name != NULL; po++) {
39 char buf[64];
40 if ((po->flags & mask) == value) {
41 if (first) {
42 printf("%s", msg);
43 first = 0;
44 }
f7d78f36 45 av_strlcpy(buf, po->name, sizeof(buf));
02d504a7 46 if (po->flags & HAS_ARG) {
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47 av_strlcat(buf, " ", sizeof(buf));
48 av_strlcat(buf, po->argname, sizeof(buf));
01310af2 49 }
02d504a7 50 printf("-%-17s %s\n", buf, po->help);
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51 }
52 }
53}
54
fccfc475 55static const OptionDef* find_option(const OptionDef *po, const char *name){
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56 while (po->name != NULL) {
57 if (!strcmp(name, po->name))
58 break;
59 po++;
60 }
61 return po;
62}
63
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64void parse_options(int argc, char **argv, const OptionDef *options,
65 void (* parse_arg_function)(const char*))
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66{
67 const char *opt, *arg;
b0d7bc1e 68 int optindex, handleoptions=1;
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69 const OptionDef *po;
70
71 /* parse options */
72 optindex = 1;
73 while (optindex < argc) {
74 opt = argv[optindex++];
115329f1 75
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76 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
77 if (opt[1] == '-' && opt[2] == '\0') {
78 handleoptions = 0;
79 continue;
80 }
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81 po= find_option(options, opt + 1);
82 if (!po->name)
83 po= find_option(options, "default");
01310af2 84 if (!po->name) {
8bbf6db9 85unknown_opt:
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86 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
87 exit(1);
88 }
89 arg = NULL;
90 if (po->flags & HAS_ARG) {
91 arg = argv[optindex++];
92 if (!arg) {
93 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
94 exit(1);
95 }
96 }
97 if (po->flags & OPT_STRING) {
98 char *str;
02d504a7 99 str = av_strdup(arg);
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100 *po->u.str_arg = str;
101 } else if (po->flags & OPT_BOOL) {
102 *po->u.int_arg = 1;
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103 } else if (po->flags & OPT_INT) {
104 *po->u.int_arg = atoi(arg);
ffdf9a1f 105 } else if (po->flags & OPT_INT64) {
946d3b12 106 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
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107 } else if (po->flags & OPT_FLOAT) {
108 *po->u.float_arg = atof(arg);
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109 } else if (po->flags & OPT_FUNC2) {
110 if(po->u.func2_arg(opt+1, arg)<0)
111 goto unknown_opt;
01310af2 112 } else {
bb270c08 113 po->u.func_arg(arg);
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114 }
115 } else {
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116 if (parse_arg_function)
117 parse_arg_function(opt);
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118 }
119 }
120}
121
122void print_error(const char *filename, int err)
123{
124 switch(err) {
125 case AVERROR_NUMEXPECTED:
126 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
127 "Use '%%d' to specify the image number:\n"
128 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
115329f1 129 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
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130 filename);
131 break;
132 case AVERROR_INVALIDDATA:
133 fprintf(stderr, "%s: Error while parsing header\n", filename);
134 break;
135 case AVERROR_NOFMT:
136 fprintf(stderr, "%s: Unknown format\n", filename);
137 break;
6f3e0b21 138 case AVERROR(EIO):
45ce5ddb 139 fprintf(stderr, "%s: I/O error occured\n"
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140 "Usually that means that input file is truncated and/or corrupted.\n",
141 filename);
45ce5ddb 142 break;
769e10f0 143 case AVERROR(ENOMEM):
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144 fprintf(stderr, "%s: memory allocation error occured\n", filename);
145 break;
24fddf48 146 case AVERROR(ENOENT):
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147 fprintf(stderr, "%s: no such file or directory\n", filename);
148 break;
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149 default:
150 fprintf(stderr, "%s: Error while opening file\n", filename);
151 break;
152 }
153}
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154
155void show_license(void)
156{
157#ifdef CONFIG_GPL
158 printf(
159 "FFmpeg is free software; you can redistribute it and/or modify\n"
160 "it under the terms of the GNU General Public License as published by\n"
161 "the Free Software Foundation; either version 2 of the License, or\n"
162 "(at your option) any later version.\n"
163 "\n"
164 "FFmpeg is distributed in the hope that it will be useful,\n"
165 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
166 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
167 "GNU General Public License for more details.\n"
168 "\n"
169 "You should have received a copy of the GNU General Public License\n"
170 "along with FFmpeg; if not, write to the Free Software\n"
171 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
172 );
173#else
174 printf(
175 "FFmpeg is free software; you can redistribute it and/or\n"
176 "modify it under the terms of the GNU Lesser General Public\n"
177 "License as published by the Free Software Foundation; either\n"
178 "version 2.1 of the License, or (at your option) any later version.\n"
179 "\n"
180 "FFmpeg is distributed in the hope that it will be useful,\n"
181 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
182 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
183 "Lesser General Public License for more details.\n"
184 "\n"
185 "You should have received a copy of the GNU Lesser General Public\n"
186 "License along with FFmpeg; if not, write to the Free Software\n"
187 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
188 );
189#endif
190}