Split out the MDPR chunk reading into its own function.
[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 "cmdutils.h"
28 #include "avstring.h"
29 #include "version.h"
30 #include "config.h"
31
32 #undef exit
33
34 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
35 {
36 const OptionDef *po;
37 int first;
38
39 first = 1;
40 for(po = options; po->name != NULL; po++) {
41 char buf[64];
42 if ((po->flags & mask) == value) {
43 if (first) {
44 printf("%s", msg);
45 first = 0;
46 }
47 av_strlcpy(buf, po->name, sizeof(buf));
48 if (po->flags & HAS_ARG) {
49 av_strlcat(buf, " ", sizeof(buf));
50 av_strlcat(buf, po->argname, sizeof(buf));
51 }
52 printf("-%-17s %s\n", buf, po->help);
53 }
54 }
55 }
56
57 static const OptionDef* find_option(const OptionDef *po, const char *name){
58 while (po->name != NULL) {
59 if (!strcmp(name, po->name))
60 break;
61 po++;
62 }
63 return po;
64 }
65
66 void parse_options(int argc, char **argv, const OptionDef *options,
67 void (* parse_arg_function)(const char*))
68 {
69 const char *opt, *arg;
70 int optindex, handleoptions=1;
71 const OptionDef *po;
72
73 /* parse options */
74 optindex = 1;
75 while (optindex < argc) {
76 opt = argv[optindex++];
77
78 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
79 if (opt[1] == '-' && opt[2] == '\0') {
80 handleoptions = 0;
81 continue;
82 }
83 po= find_option(options, opt + 1);
84 if (!po->name)
85 po= find_option(options, "default");
86 if (!po->name) {
87 unknown_opt:
88 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
89 exit(1);
90 }
91 arg = NULL;
92 if (po->flags & HAS_ARG) {
93 arg = argv[optindex++];
94 if (!arg) {
95 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
96 exit(1);
97 }
98 }
99 if (po->flags & OPT_STRING) {
100 char *str;
101 str = av_strdup(arg);
102 *po->u.str_arg = str;
103 } else if (po->flags & OPT_BOOL) {
104 *po->u.int_arg = 1;
105 } else if (po->flags & OPT_INT) {
106 *po->u.int_arg = atoi(arg);
107 } else if (po->flags & OPT_INT64) {
108 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
109 } else if (po->flags & OPT_FLOAT) {
110 *po->u.float_arg = atof(arg);
111 } else if (po->flags & OPT_FUNC2) {
112 if(po->u.func2_arg(opt+1, arg)<0)
113 goto unknown_opt;
114 } else {
115 po->u.func_arg(arg);
116 }
117 } else {
118 if (parse_arg_function)
119 parse_arg_function(opt);
120 }
121 }
122 }
123
124 void print_error(const char *filename, int err)
125 {
126 switch(err) {
127 case AVERROR_NUMEXPECTED:
128 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
129 "Use '%%d' to specify the image number:\n"
130 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
131 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
132 filename);
133 break;
134 case AVERROR_INVALIDDATA:
135 fprintf(stderr, "%s: Error while parsing header\n", filename);
136 break;
137 case AVERROR_NOFMT:
138 fprintf(stderr, "%s: Unknown format\n", filename);
139 break;
140 case AVERROR(EIO):
141 fprintf(stderr, "%s: I/O error occured\n"
142 "Usually that means that input file is truncated and/or corrupted.\n",
143 filename);
144 break;
145 case AVERROR(ENOMEM):
146 fprintf(stderr, "%s: memory allocation error occured\n", filename);
147 break;
148 case AVERROR(ENOENT):
149 fprintf(stderr, "%s: no such file or directory\n", filename);
150 break;
151 default:
152 fprintf(stderr, "%s: Error while opening file\n", filename);
153 break;
154 }
155 }
156
157 void show_banner(const char *program_name, int program_birth_year)
158 {
159 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2007 Fabrice Bellard, et al.\n",
160 program_name, program_birth_year);
161 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
162 fprintf(stderr, " libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
163 fprintf(stderr, " libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
164 fprintf(stderr, " libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
165 fprintf(stderr, " built on " __DATE__ " " __TIME__);
166 #ifdef __GNUC__
167 fprintf(stderr, ", gcc: " __VERSION__ "\n");
168 #else
169 fprintf(stderr, ", using a non-gcc compiler\n");
170 #endif
171 }
172
173 void show_version(const char *program_name) {
174 /* TODO: add function interface to avutil and avformat */
175 printf("%s " FFMPEG_VERSION "\n", program_name);
176 printf("libavutil %d\n"
177 "libavcodec %d\n"
178 "libavformat %d\n",
179 LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD);
180 }
181
182 void show_license(void)
183 {
184 #ifdef CONFIG_GPL
185 printf(
186 "FFmpeg is free software; you can redistribute it and/or modify\n"
187 "it under the terms of the GNU General Public License as published by\n"
188 "the Free Software Foundation; either version 2 of the License, or\n"
189 "(at your option) any later version.\n"
190 "\n"
191 "FFmpeg is distributed in the hope that it will be useful,\n"
192 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
193 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
194 "GNU General Public License for more details.\n"
195 "\n"
196 "You should have received a copy of the GNU General Public License\n"
197 "along with FFmpeg; if not, write to the Free Software\n"
198 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
199 );
200 #else
201 printf(
202 "FFmpeg is free software; you can redistribute it and/or\n"
203 "modify it under the terms of the GNU Lesser General Public\n"
204 "License as published by the Free Software Foundation; either\n"
205 "version 2.1 of the License, or (at your option) any later version.\n"
206 "\n"
207 "FFmpeg is distributed in the hope that it will be useful,\n"
208 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
209 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
210 "Lesser General Public License for more details.\n"
211 "\n"
212 "You should have received a copy of the GNU Lesser General Public\n"
213 "License along with FFmpeg; if not, write to the Free Software\n"
214 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
215 );
216 #endif
217 }