pipewire/spa/plugins/support/plugin.c
Wim Taymans 465f12241e Implement protocol extensions
Add hooks that contain protocol specific interfaces that can be used
to extend the protocol. This makes it possible to add new interfaces
to the protocol and implement the protocol specific data transport.
Move these protocol specific extension to the extensions directory.
2017-07-12 18:04:00 +02:00

49 lines
1.5 KiB
C

/* Spa Video Test Source plugin
* Copyright (C) 2016 Axis Communications AB
*
* 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 <stdio.h>
#include <spa/plugin.h>
#include <spa/node.h>
#define MAX_FACTORIES 16
static const struct spa_handle_factory *factories[MAX_FACTORIES];
static int n_factories;
void
spa_handle_factory_register(const struct spa_handle_factory *factory)
{
if (n_factories < MAX_FACTORIES)
factories[n_factories++] = factory;
else
fprintf(stderr, "too many factories\n");
}
int
spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t index)
{
spa_return_val_if_fail(factory != NULL, SPA_RESULT_INVALID_ARGUMENTS);
if (index >= n_factories)
return SPA_RESULT_ENUM_END;
*factory = factories[index];
return SPA_RESULT_OK;
}