vhook watermark patch by (Marcus Engene: ffmpeg, engene se)
[libav.git] / cmdutils.c
1 /*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19 #define HAVE_AV_CONFIG_H
20 #include "avformat.h"
21 #include "common.h"
22
23 #include "cmdutils.h"
24
25 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
26 {
27 const OptionDef *po;
28 int first;
29
30 first = 1;
31 for(po = options; po->name != NULL; po++) {
32 char buf[64];
33 if ((po->flags & mask) == value) {
34 if (first) {
35 printf("%s", msg);
36 first = 0;
37 }
38 pstrcpy(buf, sizeof(buf), po->name);
39 if (po->flags & HAS_ARG) {
40 pstrcat(buf, sizeof(buf), " ");
41 pstrcat(buf, sizeof(buf), po->argname);
42 }
43 printf("-%-17s %s\n", buf, po->help);
44 }
45 }
46 }
47
48 void parse_options(int argc, char **argv, const OptionDef *options)
49 {
50 const char *opt, *arg;
51 int optindex;
52 const OptionDef *po;
53
54 /* parse options */
55 optindex = 1;
56 while (optindex < argc) {
57 opt = argv[optindex++];
58
59 if (opt[0] == '-' && opt[1] != '\0') {
60 po = options;
61 while (po->name != NULL) {
62 if (!strcmp(opt + 1, po->name))
63 break;
64 po++;
65 }
66 if (!po->name) {
67 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
68 exit(1);
69 }
70 arg = NULL;
71 if (po->flags & HAS_ARG) {
72 arg = argv[optindex++];
73 if (!arg) {
74 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
75 exit(1);
76 }
77 }
78 if (po->flags & OPT_STRING) {
79 char *str;
80 str = av_strdup(arg);
81 *po->u.str_arg = str;
82 } else if (po->flags & OPT_BOOL) {
83 *po->u.int_arg = 1;
84 } else if (po->flags & OPT_INT) {
85 *po->u.int_arg = atoi(arg);
86 } else if (po->flags & OPT_FLOAT) {
87 *po->u.float_arg = atof(arg);
88 } else {
89 po->u.func_arg(arg);
90 }
91 } else {
92 parse_arg_file(opt);
93 }
94 }
95 }
96
97 void print_error(const char *filename, int err)
98 {
99 switch(err) {
100 case AVERROR_NUMEXPECTED:
101 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
102 "Use '%%d' to specify the image number:\n"
103 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
104 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
105 filename);
106 break;
107 case AVERROR_INVALIDDATA:
108 fprintf(stderr, "%s: Error while parsing header\n", filename);
109 break;
110 case AVERROR_NOFMT:
111 fprintf(stderr, "%s: Unknown format\n", filename);
112 break;
113 case AVERROR_IO:
114 fprintf(stderr, "%s: I/O error occured\n"
115 "Usually that means that input file is truncated and/or corrupted.\n",
116 filename);
117 break;
118 case AVERROR_NOMEM:
119 fprintf(stderr, "%s: memory allocation error occured\n", filename);
120 break;
121 default:
122 fprintf(stderr, "%s: Error while opening file\n", filename);
123 break;
124 }
125 }