Statistics
| Branch: | Revision:

ffmpeg / cmdutils.c @ 0ba0c8de

History | View | Annotate | Download (4.65 KB)

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
#define HAVE_AV_CONFIG_H
22
#include "avformat.h"
23
#include "common.h"
24

    
25
#include "cmdutils.h"
26

    
27
#undef exit
28

    
29
void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
30
{
31
    const OptionDef *po;
32
    int first;
33

    
34
    first = 1;
35
    for(po = options; po->name != NULL; po++) {
36
        char buf[64];
37
        if ((po->flags & mask) == value) {
38
            if (first) {
39
                printf("%s", msg);
40
                first = 0;
41
            }
42
            pstrcpy(buf, sizeof(buf), po->name);
43
            if (po->flags & HAS_ARG) {
44
                pstrcat(buf, sizeof(buf), " ");
45
                pstrcat(buf, sizeof(buf), po->argname);
46
            }
47
            printf("-%-17s  %s\n", buf, po->help);
48
        }
49
    }
50
}
51

    
52
static const OptionDef* find_option(const OptionDef *po, const char *name){
53
    while (po->name != NULL) {
54
        if (!strcmp(name, po->name))
55
            break;
56
        po++;
57
    }
58
    return po;
59
}
60

    
61
void parse_options(int argc, char **argv, const OptionDef *options)
62
{
63
    const char *opt, *arg;
64
    int optindex, handleoptions=1;
65
    const OptionDef *po;
66

    
67
    /* parse options */
68
    optindex = 1;
69
    while (optindex < argc) {
70
        opt = argv[optindex++];
71

    
72
        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
73
          if (opt[1] == '-' && opt[2] == '\0') {
74
            handleoptions = 0;
75
            continue;
76
          }
77
            po= find_option(options, opt + 1);
78
            if (!po->name)
79
                po= find_option(options, "default");
80
            if (!po->name) {
81
unknown_opt:
82
                fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
83
                exit(1);
84
            }
85
            arg = NULL;
86
            if (po->flags & HAS_ARG) {
87
                arg = argv[optindex++];
88
                if (!arg) {
89
                    fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
90
                    exit(1);
91
                }
92
            }
93
            if (po->flags & OPT_STRING) {
94
                char *str;
95
                str = av_strdup(arg);
96
                *po->u.str_arg = str;
97
            } else if (po->flags & OPT_BOOL) {
98
                *po->u.int_arg = 1;
99
            } else if (po->flags & OPT_INT) {
100
                *po->u.int_arg = atoi(arg);
101
            } else if (po->flags & OPT_INT64) {
102
                *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
103
            } else if (po->flags & OPT_FLOAT) {
104
                *po->u.float_arg = atof(arg);
105
            } else if (po->flags & OPT_FUNC2) {
106
                if(po->u.func2_arg(opt+1, arg)<0)
107
                    goto unknown_opt;
108
            } else {
109
                po->u.func_arg(arg);
110
            }
111
        } else {
112
            parse_arg_file(opt);
113
        }
114
    }
115
}
116

    
117
void print_error(const char *filename, int err)
118
{
119
    switch(err) {
120
    case AVERROR_NUMEXPECTED:
121
        fprintf(stderr, "%s: Incorrect image filename syntax.\n"
122
                "Use '%%d' to specify the image number:\n"
123
                "  for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
124
                "  for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
125
                filename);
126
        break;
127
    case AVERROR_INVALIDDATA:
128
        fprintf(stderr, "%s: Error while parsing header\n", filename);
129
        break;
130
    case AVERROR_NOFMT:
131
        fprintf(stderr, "%s: Unknown format\n", filename);
132
        break;
133
    case AVERROR_IO:
134
        fprintf(stderr, "%s: I/O error occured\n"
135
                "Usually that means that input file is truncated and/or corrupted.\n",
136
                filename);
137
        break;
138
    case AVERROR_NOMEM:
139
        fprintf(stderr, "%s: memory allocation error occured\n", filename);
140
        break;
141
    case AVERROR_NOENT:
142
        fprintf(stderr, "%s: no such file or directory\n", filename);
143
        break;
144
    default:
145
        fprintf(stderr, "%s: Error while opening file\n", filename);
146
        break;
147
    }
148
}