2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
21 #define HAVE_AV_CONFIG_H
29 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
35 for(po = options; po->name != NULL; po++) {
37 if ((po->flags & mask) == value) {
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);
47 printf("-%-17s %s\n", buf, po->help);
52 static const OptionDef* find_option(const OptionDef *po, const char *name){
53 while (po->name != NULL) {
54 if (!strcmp(name, po->name))
61 void parse_options(int argc, char **argv, const OptionDef *options)
63 const char *opt, *arg;
64 int optindex, handleoptions=1;
69 while (optindex < argc) {
70 opt = argv[optindex++];
72 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
73 if (opt[1] == '-' && opt[2] == '\0') {
77 po= find_option(options, opt + 1);
79 po= find_option(options, "default");
82 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
86 if (po->flags & HAS_ARG) {
87 arg = argv[optindex++];
89 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
93 if (po->flags & OPT_STRING) {
97 } else if (po->flags & OPT_BOOL) {
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)
117 void print_error(const char *filename, int 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",
127 case AVERROR_INVALIDDATA:
128 fprintf(stderr, "%s: Error while parsing header\n", filename);
131 fprintf(stderr, "%s: Unknown format\n", filename);
134 fprintf(stderr, "%s: I/O error occured\n"
135 "Usually that means that input file is truncated and/or corrupted.\n",
139 fprintf(stderr, "%s: memory allocation error occured\n", filename);
142 fprintf(stderr, "%s: no such file or directory\n", filename);
145 fprintf(stderr, "%s: Error while opening file\n", filename);