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/*
* Xilinx Video Library - Command line sample application
*
* Copyright (C) 2016 Ideas on board Oy
*
* Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY [LICENSOR] "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <xlnx-events.h>
#include <xlnx-tools.h>
#include <xlnx-video.h>
static const char *component_type_name(enum xlnx_video_component_type type)
{
static const struct {
enum xlnx_video_component_type type;
const char *name;
} types[] = {
{ XLNX_VIDEO_COMPONENT_CAPTURE, "capture" },
{ XLNX_VIDEO_COMPONENT_PROCESS, "process" },
{ XLNX_VIDEO_COMPONENT_DISPLAY, "display" },
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(types); ++i) {
if (types[i].type == type)
return types[i].name;
}
return "unknown";
}
static void list_components(struct xlnx_video *xv)
{
struct xlnx_video_component **components;
int num_components;
int i;
num_components = xlnx_video_component_list(xv, XLNX_VIDEO_COMPONENT_ANY,
&components);
if (num_components < 0) {
printf("Failed to list components\n");
return;
} else if (!num_components) {
printf("No components found.\n");
return;
}
printf("%u component%s found\n", num_components,
num_components > 1 ? "s" : "");
for (i = 0; i < num_components; ++i) {
const struct xlnx_video_component *component = components[i];
enum xlnx_video_component_type type;
const char *name;
type = xlnx_video_component_type(component);
name = xlnx_video_component_name(component);
printf("- Component %u: type %s name %s\n", i,
component_type_name(type), name);
}
free(components);
}
/* -----------------------------------------------------------------------------
* Command Line Parsing
*/
static unsigned int opt_debug;
static bool opt_list_components;
static const char *opt_plugins_directory;
static void usage(const char *argv0)
{
printf("%s [options]\n", argv0);
printf("-c, --components List available components\n");
printf("-d, --debug level Set the debug level (0-4, default: 0)\n");
printf("-h, --help Show this help message and exit\n");
printf("-p, --plugins dir Load plugins from given directory\n");
}
static struct option opts[] = {
{"components", 0, 0, 'c'},
{"debug", 1, 0, 'd'},
{"help", 0, 0, 'h'},
{"plugins", 1, 0, 'p'},
};
static int parse_cmdline(int argc, char **argv)
{
char *endp;
int opt;
/* Parse options */
while ((opt = getopt_long(argc, argv, "cd:hp:", opts, NULL)) != -1) {
switch (opt) {
case 'c':
opt_list_components = true;
break;
case 'd':
opt_debug = strtoul(optarg, &endp, 10);
if (*endp != '\0') {
fprintf(stderr, "Invalid debug level %s\n", optarg);
usage(argv[0]);
return 1;
}
break;
case 'h':
usage(argv[0]);
return 1;
case 'p':
opt_plugins_directory = optarg;
break;
}
}
return 0;
}
/* -----------------------------------------------------------------------------
* Main
*/
int main(int argc, char *argv[])
{
struct xlnx_video *xv;
int ret;
ret = parse_cmdline(argc, argv);
if (ret)
return ret;
xv = xlnx_video_create();
if (!xv) {
printf("Failed to create a library context\n");
return 1;
}
if (opt_debug)
xlnx_video_set_log_level(xv, opt_debug);
ret = xlnx_events_init(xv);
if (ret < 0) {
printf("Failed to initialize events handling\n");
goto done;
}
ret = xlnx_video_setup(xv);
if (ret < 0) {
printf("Failed to setup the library context\n");
goto done;
}
if (opt_plugins_directory) {
ret = xlnx_video_plugin_load_directory(xv, opt_plugins_directory);
if (ret < 0) {
printf("Failed to load plugins from directory `%s'\n",
opt_plugins_directory);
goto done;
}
printf("Loaded %u plugin%s from directory `%s'\n", ret,
ret != 1 ? "s" : "", opt_plugins_directory);
}
ret = xlnx_video_component_enumerate(xv);
if (ret < 0) {
printf("Failed to enumerate components\n");
goto done;
}
if (opt_list_components)
list_components(xv);
done:
xlnx_events_fini(xv);
xlnx_video_destroy(xv);
return ret;
}
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