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/*
* Media controller test application
*
* Copyright (C) 2010-2011 Ideas on board SPRL
*
* Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* This program 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 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <getopt.h>
#include <stdio.h>
#include <unistd.h>
#include "options.h"
#define MEDIA_DEVNAME_DEFAULT "/dev/media0"
struct media_options media_opts = {
.devname = MEDIA_DEVNAME_DEFAULT,
};
static void usage(const char *argv0, int verbose)
{
printf("%s [options] device\n", argv0);
printf("-d, --device dev Media device name (default: %s)\n", MEDIA_DEVNAME_DEFAULT);
printf("-e, --entity name Print the device name associated with the given entity\n");
printf("-f, --set-format Comma-separated list of formats to setup\n");
printf(" --get-format pad Print the active format on a given pad\n");
printf("-h, --help Show verbose help and exit\n");
printf("-i, --interactive Modify links interactively\n");
printf("-l, --links Comma-separated list of links descriptors to setup\n");
printf("-p, --print-topology Print the device topology (implies -v)\n");
printf(" --print-dot Print the device topology as a dot graph (implies -v)\n");
printf("-r, --reset Reset all links to inactive\n");
printf("-v, --verbose Be verbose\n");
if (!verbose)
return;
printf("\n");
printf("Links and formats are defined as\n");
printf("\tlink = pad '->' pad '[' flags ']' ;\n");
printf("\tformat = pad '[' fcc ' ' size [ ' ' crop ] [ ' ' '@' frame interval ] ']' ;\n");
printf("\tpad = entity ':' pad number ;\n");
printf("\tentity = entity number | ( '\"' entity name '\"' ) ;\n");
printf("\tsize = width 'x' height ;\n");
printf("\tcrop = '(' left ',' top ')' '/' size ;\n");
printf("\tframe interval = numerator '/' denominator ;\n");
printf("where the fields are\n");
printf("\tentity number Entity numeric identifier\n");
printf("\tentity name Entity name (string) \n");
printf("\tpad number Pad numeric identifier\n");
printf("\tflags Link flags (0: inactive, 1: active)\n");
printf("\tfcc Format FourCC\n");
printf("\twidth Image width in pixels\n");
printf("\theight Image height in pixels\n");
printf("\tnumerator Frame interval numerator\n");
printf("\tdenominator Frame interval denominator\n");
}
#define OPT_PRINT_DOT 256
#define OPT_GET_FORMAT 257
static struct option opts[] = {
{"device", 1, 0, 'd'},
{"entity", 1, 0, 'e'},
{"set-format", 1, 0, 'f'},
{"get-format", 1, 0, OPT_GET_FORMAT},
{"help", 0, 0, 'h'},
{"interactive", 0, 0, 'i'},
{"links", 1, 0, 'l'},
{"print-dot", 0, 0, OPT_PRINT_DOT},
{"print-topology", 0, 0, 'p'},
{"reset", 0, 0, 'r'},
{"verbose", 0, 0, 'v'},
};
int parse_cmdline(int argc, char **argv)
{
int opt;
if (argc == 1) {
usage(argv[0], 0);
return 1;
}
/* parse options */
while ((opt = getopt_long(argc, argv, "d:e:f:hil:prv", opts, NULL)) != -1) {
switch (opt) {
case 'd':
media_opts.devname = optarg;
break;
case 'e':
media_opts.entity = optarg;
break;
case 'f':
media_opts.formats = optarg;
break;
case 'h':
usage(argv[0], 1);
exit(0);
case 'i':
media_opts.interactive = 1;
break;
case 'l':
media_opts.links = optarg;
break;
case 'p':
media_opts.print = 1;
media_opts.verbose = 1;
break;
case 'r':
media_opts.reset = 1;
break;
case 'v':
media_opts.verbose = 1;
break;
case OPT_PRINT_DOT:
media_opts.print_dot = 1;
break;
case OPT_GET_FORMAT:
media_opts.pad = optarg;
break;
default:
printf("Invalid option -%c\n", opt);
printf("Run %s -h for help.\n", argv[0]);
return 1;
}
}
return 0;
}
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