Implement common show version and banner.
[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"
86074ed1 29#include "version.h"
01310af2 30
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31#undef exit
32
02d504a7 33void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
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34{
35 const OptionDef *po;
02d504a7 36 int first;
01310af2 37
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38 first = 1;
39 for(po = options; po->name != NULL; po++) {
40 char buf[64];
41 if ((po->flags & mask) == value) {
42 if (first) {
43 printf("%s", msg);
44 first = 0;
45 }
f7d78f36 46 av_strlcpy(buf, po->name, sizeof(buf));
02d504a7 47 if (po->flags & HAS_ARG) {
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48 av_strlcat(buf, " ", sizeof(buf));
49 av_strlcat(buf, po->argname, sizeof(buf));
01310af2 50 }
02d504a7 51 printf("-%-17s %s\n", buf, po->help);
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52 }
53 }
54}
55
fccfc475 56static const OptionDef* find_option(const OptionDef *po, const char *name){
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57 while (po->name != NULL) {
58 if (!strcmp(name, po->name))
59 break;
60 po++;
61 }
62 return po;
63}
64
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65void parse_options(int argc, char **argv, const OptionDef *options,
66 void (* parse_arg_function)(const char*))
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67{
68 const char *opt, *arg;
b0d7bc1e 69 int optindex, handleoptions=1;
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70 const OptionDef *po;
71
72 /* parse options */
73 optindex = 1;
74 while (optindex < argc) {
75 opt = argv[optindex++];
115329f1 76
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77 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
78 if (opt[1] == '-' && opt[2] == '\0') {
79 handleoptions = 0;
80 continue;
81 }
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82 po= find_option(options, opt + 1);
83 if (!po->name)
84 po= find_option(options, "default");
01310af2 85 if (!po->name) {
8bbf6db9 86unknown_opt:
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87 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
88 exit(1);
89 }
90 arg = NULL;
91 if (po->flags & HAS_ARG) {
92 arg = argv[optindex++];
93 if (!arg) {
94 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
95 exit(1);
96 }
97 }
98 if (po->flags & OPT_STRING) {
99 char *str;
02d504a7 100 str = av_strdup(arg);
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101 *po->u.str_arg = str;
102 } else if (po->flags & OPT_BOOL) {
103 *po->u.int_arg = 1;
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104 } else if (po->flags & OPT_INT) {
105 *po->u.int_arg = atoi(arg);
ffdf9a1f 106 } else if (po->flags & OPT_INT64) {
946d3b12 107 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
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108 } else if (po->flags & OPT_FLOAT) {
109 *po->u.float_arg = atof(arg);
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110 } else if (po->flags & OPT_FUNC2) {
111 if(po->u.func2_arg(opt+1, arg)<0)
112 goto unknown_opt;
01310af2 113 } else {
bb270c08 114 po->u.func_arg(arg);
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115 }
116 } else {
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117 if (parse_arg_function)
118 parse_arg_function(opt);
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119 }
120 }
121}
122
123void print_error(const char *filename, int err)
124{
125 switch(err) {
126 case AVERROR_NUMEXPECTED:
127 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
128 "Use '%%d' to specify the image number:\n"
129 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
115329f1 130 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
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131 filename);
132 break;
133 case AVERROR_INVALIDDATA:
134 fprintf(stderr, "%s: Error while parsing header\n", filename);
135 break;
136 case AVERROR_NOFMT:
137 fprintf(stderr, "%s: Unknown format\n", filename);
138 break;
6f3e0b21 139 case AVERROR(EIO):
45ce5ddb 140 fprintf(stderr, "%s: I/O error occured\n"
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141 "Usually that means that input file is truncated and/or corrupted.\n",
142 filename);
45ce5ddb 143 break;
769e10f0 144 case AVERROR(ENOMEM):
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145 fprintf(stderr, "%s: memory allocation error occured\n", filename);
146 break;
24fddf48 147 case AVERROR(ENOENT):
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148 fprintf(stderr, "%s: no such file or directory\n", filename);
149 break;
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150 default:
151 fprintf(stderr, "%s: Error while opening file\n", filename);
152 break;
153 }
154}
f35917b2 155
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156void show_banner(const char *program_name, int program_birth_year)
157{
158 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2007 Fabrice Bellard, et al.\n",
159 program_name, program_birth_year);
160 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
161 fprintf(stderr, " libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
162 fprintf(stderr, " libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
163 fprintf(stderr, " libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
164 fprintf(stderr, " built on " __DATE__ " " __TIME__);
165#ifdef __GNUC__
166 fprintf(stderr, ", gcc: " __VERSION__ "\n");
167#else
168 fprintf(stderr, ", using a non-gcc compiler\n");
169#endif
170}
171
172void show_version(const char *program_name) {
173 /* TODO: add function interface to avutil and avformat */
174 printf("%s " FFMPEG_VERSION "\n", program_name);
175 printf("libavutil %d\n"
176 "libavcodec %d\n"
177 "libavformat %d\n",
178 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD);
179}
180
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181void show_license(void)
182{
183#ifdef CONFIG_GPL
184 printf(
185 "FFmpeg is free software; you can redistribute it and/or modify\n"
186 "it under the terms of the GNU General Public License as published by\n"
187 "the Free Software Foundation; either version 2 of the License, or\n"
188 "(at your option) any later version.\n"
189 "\n"
190 "FFmpeg is distributed in the hope that it will be useful,\n"
191 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
192 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
193 "GNU General Public License for more details.\n"
194 "\n"
195 "You should have received a copy of the GNU General Public License\n"
196 "along with FFmpeg; if not, write to the Free Software\n"
197 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
198 );
199#else
200 printf(
201 "FFmpeg is free software; you can redistribute it and/or\n"
202 "modify it under the terms of the GNU Lesser General Public\n"
203 "License as published by the Free Software Foundation; either\n"
204 "version 2.1 of the License, or (at your option) any later version.\n"
205 "\n"
206 "FFmpeg is distributed in the hope that it will be useful,\n"
207 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
208 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
209 "Lesser General Public License for more details.\n"
210 "\n"
211 "You should have received a copy of the GNU Lesser General Public\n"
212 "License along with FFmpeg; if not, write to the Free Software\n"
213 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
214 );
215#endif
216}