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Diffstat (limited to 'src/options.c')
| -rw-r--r-- | src/options.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/options.c b/src/options.c new file mode 100644 index 0000000..186425e --- /dev/null +++ b/src/options.c @@ -0,0 +1,155 @@ +/* + * Media controller test application + * + * Copyright (C) 2010 Ideas on board SPRL <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + */ + +#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; +} + |