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/*
Copyright (C) 2013 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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 <stdio.h>
#include <stdint.h>
#include <jack/types.h>
#include <jack/uuid.h>
#include "internal.h"
static pthread_mutex_t uuid_lock = PTHREAD_MUTEX_INITIALIZER;
static uint32_t uuid_cnt = 0;
enum JackUUIDType {
JackUUIDPort = 0x1,
JackUUIDClient = 0x2
};
jack_uuid_t
jack_client_uuid_generate ()
{
jack_uuid_t uuid = JackUUIDClient;
pthread_mutex_lock (&uuid_lock);
uuid = (uuid << 32) | ++uuid_cnt;
pthread_mutex_unlock (&uuid_lock);
return uuid;
}
jack_uuid_t
jack_port_uuid_generate (uint32_t port_id)
{
jack_uuid_t uuid = JackUUIDPort;
uuid = (uuid << 32) | (port_id + 1);
return uuid;
}
uint32_t
jack_uuid_to_index (jack_uuid_t u)
{
return (u & 0xffff) - 1;
}
int
jack_uuid_empty (jack_uuid_t u)
{
return (u == 0);
}
int
jack_uuid_compare (jack_uuid_t a, jack_uuid_t b)
{
if (a == b) {
return 0;
}
if (a < b) {
return -1;
}
return 1;
}
void
jack_uuid_copy (jack_uuid_t* dst, jack_uuid_t src)
{
*dst = src;
}
void
jack_uuid_clear (jack_uuid_t* u)
{
*u = 0;
}
void
jack_uuid_unparse (jack_uuid_t u, char b[JACK_UUID_STRING_SIZE])
{
snprintf (b, JACK_UUID_STRING_SIZE, "%" PRIu64, u);
}
int
jack_uuid_parse (const char *b, jack_uuid_t* u)
{
if (sscanf (b, "%" PRIu64, u) == 1) {
if (*u < (0x1LL << 32)) {
/* has not type bits set - not legal */
return -1;
}
return 0;
}
return -1;
}
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