/* Spa Volume plugin
 * Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.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.
 */

#include <errno.h>
#include <stdio.h>

#include <spa/support/plugin.h>

#define MAX_FACTORIES   16

static const struct spa_handle_factory *factories[MAX_FACTORIES];
static int n_factories;

int spa_handle_factory_register(const struct spa_handle_factory *factory)
{
        if (n_factories >= MAX_FACTORIES) {
                fprintf(stderr, "too many factories\n");
		return -ENOMEM;
	}

	factories[n_factories++] = factory;
	return 0;
}

int
spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
{
	spa_return_val_if_fail(factory != NULL, -EINVAL);
	spa_return_val_if_fail(index != NULL, -EINVAL);

	if (*index >= n_factories)
		return 0;

	*factory = factories[(*index)++];

	return 1;
}