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a2jmidid/port_hash.c

64 lines
1.7 KiB
C

/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* ALSA SEQ < - > JACK MIDI bridge
*
* Copyright (c) 2006,2007 Dmitry S. Baikov <c0ff@konstruktiv.org>
* Copyright (c) 2007,2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
*
* 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; version 2 of the License.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdbool.h>
#include <semaphore.h>
#include <alsa/asoundlib.h>
#include <jack/jack.h>
#include <jack/ringbuffer.h>
#include "list.h"
#include "structs.h"
#include "port_hash.h"
static inline
int
a2j_port_hash(
snd_seq_addr_t addr)
{
return (addr.client + addr.port) % PORT_HASH_SIZE;
}
struct a2j_port *
a2j_port_get(
a2j_port_hash_t hash,
snd_seq_addr_t addr)
{
struct a2j_port **pport = &hash[a2j_port_hash(addr)];
while (*pport) {
struct a2j_port *port = *pport;
if (port->remote.client == addr.client && port->remote.port == addr.port)
return port;
pport = &port->next;
}
return NULL;
}
void
a2j_port_insert(
a2j_port_hash_t hash,
struct a2j_port * port)
{
struct a2j_port **pport = &hash[a2j_port_hash(port->remote)];
port->next = *pport;
*pport = port;
}