pipewire/src/modules/spa/module-node.c

/* PipeWire
 * Copyright (C) 2016 Axis Communications <dev-gstreamer@axis.com>
 * @author Linus Svensson <linus.svensson@axis.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <errno.h>
#include <getopt.h>
#include <limits.h>

#include <pipewire/core.h>
#include <pipewire/log.h>
#include <pipewire/module.h>
#include <pipewire/utils.h>

#include "spa-monitor.h"
#include "spa-node.h"

struct node_data {
	struct pw_node *this;
	struct pw_core *core;
	struct pw_properties *properties;

	struct spa_hook module_listener;
};

static void module_destroy(void *_data)
{
	struct node_data *data = _data;
	pw_node_destroy(data->this);
}

static const struct pw_module_events module_events = {
	PW_VERSION_MODULE_EVENTS,
	.destroy = module_destroy,
};

int pipewire__module_init(struct pw_module *module, const char *args)
{
	struct pw_properties *props = NULL;
	char **argv;
	int n_tokens;
	struct pw_core *core = pw_module_get_core(module);
	struct pw_node *node;
        struct node_data *data;

	if (args == NULL)
		goto wrong_arguments;

	argv = pw_split_strv(args, " \t", 4, &n_tokens);
	if (n_tokens < 3)
		goto not_enough_arguments;

	if (n_tokens == 4) {
		props = pw_properties_new_string(argv[3]);
		if (props == NULL)
			return -ENOMEM;
	}

	node = pw_spa_node_load(core,
				NULL,
				pw_module_get_global(module),
				argv[0], argv[1], argv[2],
				PW_SPA_NODE_FLAG_ACTIVATE,
				props,
				sizeof(struct node_data));

	pw_free_strv(argv);

	if (node == NULL)
		return -ENOMEM;

	data = pw_spa_node_get_user_data(node);
	data->this = node;
	data->core = core;
	data->properties = props;

	pw_log_debug("module %p: new", module);
	pw_module_add_listener(module, &data->module_listener, &module_events, data);

	return 0;

      not_enough_arguments:
	pw_free_strv(argv);
      wrong_arguments:
	pw_log_error("usage: module-spa-node <plugin> <factory> <name> [key=value ...]");
	return -EINVAL;
}