mirror of https://git.ffmpeg.org/ffmpeg.git
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/*
|
|
* Various utilities for command line tools
|
|
* Copyright (c) 2000-2003 Fabrice Bellard
|
|
*
|
|
* This library 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 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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 this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#define HAVE_AV_CONFIG_H
|
|
#include "avformat.h"
|
|
#include "common.h"
|
|
|
|
#include "cmdutils.h"
|
|
|
|
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;
|
|
}
|
|
pstrcpy(buf, sizeof(buf), po->name);
|
|
if (po->flags & HAS_ARG) {
|
|
pstrcat(buf, sizeof(buf), " ");
|
|
pstrcat(buf, sizeof(buf), po->argname);
|
|
}
|
|
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)
|
|
{
|
|
const char *opt, *arg;
|
|
int optindex;
|
|
const OptionDef *po;
|
|
|
|
/* parse options */
|
|
optindex = 1;
|
|
while (optindex < argc) {
|
|
opt = argv[optindex++];
|
|
|
|
if (opt[0] == '-' && opt[1] != '\0') {
|
|
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_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 {
|
|
parse_arg_file(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_IO:
|
|
fprintf(stderr, "%s: I/O error occured\n"
|
|
"Usually that means that input file is truncated and/or corrupted.\n",
|
|
filename);
|
|
break;
|
|
case AVERROR_NOMEM:
|
|
fprintf(stderr, "%s: memory allocation error occured\n", filename);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "%s: Error while opening file\n", filename);
|
|
break;
|
|
}
|
|
}
|