added ffplay utility
Originally committed as revision 1936 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
120
cmdutils.c
Normal file
120
cmdutils.c
Normal file
@ -0,0 +1,120 @@
|
||||
/*
|
||||
* 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
|
||||
*/
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "common.h"
|
||||
#include "avformat.h"
|
||||
|
||||
#include "cmdutils.h"
|
||||
|
||||
void show_help_options(const OptionDef *options)
|
||||
{
|
||||
const OptionDef *po;
|
||||
int i, expert, first;
|
||||
|
||||
printf("Main options are:\n");
|
||||
for(i=0;i<2;i++) {
|
||||
first = 1;
|
||||
for(po = options; po->name != NULL; po++) {
|
||||
char buf[64];
|
||||
expert = (po->flags & OPT_EXPERT) != 0;
|
||||
if (expert == i) {
|
||||
if (expert && first) {
|
||||
printf("\nAdvanced options are:\n");
|
||||
first = 0;
|
||||
}
|
||||
strcpy(buf, po->name);
|
||||
if (po->flags & HAS_ARG) {
|
||||
strcat(buf, " ");
|
||||
strcat(buf, po->argname);
|
||||
}
|
||||
printf("-%-17s %s\n", buf, po->help);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
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 = options;
|
||||
while (po->name != NULL) {
|
||||
if (!strcmp(opt + 1, po->name))
|
||||
break;
|
||||
po++;
|
||||
}
|
||||
if (!po->name) {
|
||||
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 = strdup(arg);
|
||||
*po->u.str_arg = str;
|
||||
} else if (po->flags & OPT_BOOL) {
|
||||
*po->u.int_arg = 1;
|
||||
} 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;
|
||||
default:
|
||||
fprintf(stderr, "%s: Error while opening file\n", filename);
|
||||
break;
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user