summaryrefslogtreecommitdiff
path: root/cmdutils.c
blob: 2228a7e050b82beba05adabd44499181db266ec0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/*
 * Various utilities for command line tools
 * Copyright (c) 2000-2003 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <string.h>
#include <stdlib.h>
#include <errno.h>

#include "avformat.h"
#include "cmdutils.h"
#include "avstring.h"
#include "version.h"

#undef exit

void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
{
    const OptionDef *po;
    int first;

    first = 1;
    for(po = options; po->name != NULL; po++) {
        char buf[64];
        if ((po->flags & mask) == value) {
            if (first) {
                printf("%s", msg);
                first = 0;
            }
            av_strlcpy(buf, po->name, sizeof(buf));
            if (po->flags & HAS_ARG) {
                av_strlcat(buf, " ", sizeof(buf));
                av_strlcat(buf, po->argname, sizeof(buf));
            }
            printf("-%-17s  %s\n", buf, po->help);
        }
    }
}

static const OptionDef* find_option(const OptionDef *po, const char *name){
    while (po->name != NULL) {
        if (!strcmp(name, po->name))
            break;
        po++;
    }
    return po;
}

void parse_options(int argc, char **argv, const OptionDef *options,
                   void (* parse_arg_function)(const char*))
{
    const char *opt, *arg;
    int optindex, handleoptions=1;
    const OptionDef *po;

    /* parse options */
    optindex = 1;
    while (optindex < argc) {
        opt = argv[optindex++];

        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
          if (opt[1] == '-' && opt[2] == '\0') {
            handleoptions = 0;
            continue;
          }
            po= find_option(options, opt + 1);
            if (!po->name)
                po= find_option(options, "default");
            if (!po->name) {
unknown_opt:
                fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
                exit(1);
            }
            arg = NULL;
            if (po->flags & HAS_ARG) {
                arg = argv[optindex++];
                if (!arg) {
                    fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
                    exit(1);
                }
            }
            if (po->flags & OPT_STRING) {
                char *str;
                str = av_strdup(arg);
                *po->u.str_arg = str;
            } else if (po->flags & OPT_BOOL) {
                *po->u.int_arg = 1;
            } else if (po->flags & OPT_INT) {
                *po->u.int_arg = atoi(arg);
            } else if (po->flags & OPT_INT64) {
                *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
            } else if (po->flags & OPT_FLOAT) {
                *po->u.float_arg = atof(arg);
            } else if (po->flags & OPT_FUNC2) {
                if(po->u.func2_arg(opt+1, arg)<0)
                    goto unknown_opt;
            } else {
                po->u.func_arg(arg);
            }
        } else {
            if (parse_arg_function)
                parse_arg_function(opt);
        }
    }
}

void print_error(const char *filename, int err)
{
    switch(err) {
    case AVERROR_NUMEXPECTED:
        fprintf(stderr, "%s: Incorrect image filename syntax.\n"
                "Use '%%d' to specify the image number:\n"
                "  for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
                "  for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
                filename);
        break;
    case AVERROR_INVALIDDATA:
        fprintf(stderr, "%s: Error while parsing header\n", filename);
        break;
    case AVERROR_NOFMT:
        fprintf(stderr, "%s: Unknown format\n", filename);
        break;
    case AVERROR(EIO):
        fprintf(stderr, "%s: I/O error occured\n"
                "Usually that means that input file is truncated and/or corrupted.\n",
                filename);
        break;
    case AVERROR(ENOMEM):
        fprintf(stderr, "%s: memory allocation error occured\n", filename);
        break;
    case AVERROR(ENOENT):
        fprintf(stderr, "%s: no such file or directory\n", filename);
        break;
    default:
        fprintf(stderr, "%s: Error while opening file\n", filename);
        break;
    }
}

void show_banner(const char *program_name, int program_birth_year)
{
    fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2007 Fabrice Bellard, et al.\n",
            program_name, program_birth_year);
    fprintf(stderr, "  configuration: " FFMPEG_CONFIGURATION "\n");
    fprintf(stderr, "  libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
    fprintf(stderr, "  libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
    fprintf(stderr, "  libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
    fprintf(stderr, "  built on " __DATE__ " " __TIME__);
#ifdef __GNUC__
    fprintf(stderr, ", gcc: " __VERSION__ "\n");
#else
    fprintf(stderr, ", using a non-gcc compiler\n");
#endif
}

void show_version(const char *program_name) {
     /* TODO: add function interface to avutil and avformat */
    printf("%s " FFMPEG_VERSION "\n", program_name);
    printf("libavutil   %d\n"
           "libavcodec  %d\n"
           "libavformat %d\n",
           LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD);
}

void show_license(void)
{
#ifdef CONFIG_GPL
    printf(
    "FFmpeg is free software; you can redistribute it and/or modify\n"
    "it under the terms of the GNU General Public License as published by\n"
    "the Free Software Foundation; either version 2 of the License, or\n"
    "(at your option) any later version.\n"
    "\n"
    "FFmpeg is distributed in the hope that it will be useful,\n"
    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
    "GNU General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU General Public License\n"
    "along with FFmpeg; if not, write to the Free Software\n"
    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
    );
#else
    printf(
    "FFmpeg is free software; you can redistribute it and/or\n"
    "modify it under the terms of the GNU Lesser General Public\n"
    "License as published by the Free Software Foundation; either\n"
    "version 2.1 of the License, or (at your option) any later version.\n"
    "\n"
    "FFmpeg is distributed in the hope that it will be useful,\n"
    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
    "Lesser General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU Lesser General Public\n"
    "License along with FFmpeg; if not, write to the Free Software\n"
    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
    );
#endif
}