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/*
Copyright (C) 2001 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.
$Id$
*/
#ifndef __jack_port_h__
#define __jack_port_h__
#include <pthread.h>
#include <jack/types.h>
typedef struct _jack_port_type_info {
const char *type_name; /* what do you think ? */
void (*mixdown)(jack_port_t *, nframes_t); /* function to mixdown multiple inputs to a buffer. can be
NULL, indicating that multiple input connections
are not legal for this data type.
*/
long buffer_scale_factor; /* If == 1, then a buffer to handle nframes worth of
data is sizeof(sample_t) * nframes bytes large.
If anything other than 1, the buffer allocated
for input mixing will be this value times
sizeof (sample_t) * nframes bytes in size.
Obviously, for non-audio data types, it may have
a different value.
if < 0, then the value should be ignored, and
port->shared->buffer_size should be used.
*/
} jack_port_type_info_t;
/* This is the data structure allocated in shared memory
by the engine.
*/
typedef struct _jack_port_shared {
void *buffer;
unsigned long flags;
unsigned long buffer_size;
jack_port_id_t id;
char name[JACK_CLIENT_NAME_SIZE+JACK_PORT_NAME_SIZE+2];
jack_port_type_info_t type_info;
jack_client_id_t client_id;
char in_use : 1;
char locked : 1;
} jack_port_shared_t;
/* This is the data structure allocated by the client
in local memory. The `shared' pointer points
the the corresponding structure in shared memory.
*/
struct _jack_port {
struct _jack_port_shared *shared;
GSList *connections;
struct _jack_port *tied;
void *own_buffer;
};
/* this is the structure allocated by the engine in local
memory.
*/
typedef struct _jack_port_internal {
struct _jack_port_shared *shared;
GSList *connections;
} jack_port_internal_t;
#endif /* __jack_port_h__ */
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