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/*
*
* jack_transport Copyright (C) 2005 Tim Blechmann
*
* 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; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "m_pd.h"
#include "jack/jack.h"
#include "stdio.h"
static t_class *jack_transport_class;
typedef struct _jack_transport
{
t_object x_obj;
t_outlet * x_outlet;
t_outlet * x_outlet_info;
jack_client_t* x_jack_client;
jack_position_t* x_pos;
} jack_transport_t;
/* connect to jack server */
static int jack_transport_connect(jack_transport_t * x)
{
char port_name[80] = "";
static int client = 0;
do
{
sprintf(port_name,"pure_data_jack_transport_%d",client);
client++;
}
while (((x->x_jack_client = jack_client_open (port_name, (jack_options_t)0, NULL)) == 0) &&
client < 100);
client = 0;
if (!x->x_jack_client)
{
post("jack_transport: can't connect to jack server");
return 1;
}
post("jack_transport: connecting as %s", port_name);
jack_activate(x->x_jack_client);
return 0;
}
static jack_transport_t * jack_transport_new(void)
{
int status = 0;
jack_transport_t *x = (jack_transport_t*) pd_new(jack_transport_class);
x->x_outlet = outlet_new(&x->x_obj, NULL);
x->x_outlet_info = outlet_new(&x->x_obj, NULL);
x->x_pos = (jack_position_t*) getbytes(sizeof(jack_position_t));
status = jack_transport_connect(x);
return x;
}
static void jack_transport_starter(jack_transport_t * x)
{
jack_transport_start(x->x_jack_client);
return;
}
static void jack_transport_stoper(jack_transport_t * x)
{
jack_transport_stop(x->x_jack_client);
return;
}
static void jack_transport_timebase(jack_transport_t * x)
{
jack_position_t pos;
t_atom ap[8];
const int rolling = (jack_transport_query(x->x_jack_client, &pos) == JackTransportRolling);
SETFLOAT(ap+0, pos.bar);
SETFLOAT(ap+1, pos.beat);
SETSYMBOL(ap+2, gensym("type"));
SETFLOAT(ap+3, pos.beat_type);
SETSYMBOL(ap+4, gensym("beats/bar"));
SETFLOAT(ap+5, pos.beats_per_bar);
SETSYMBOL(ap+6, gensym("bpm"));
SETFLOAT(ap+7, pos.beats_per_minute);
outlet_anything(x->x_outlet_info, gensym("beat"), 2, ap+2);
outlet_anything(x->x_outlet_info, gensym("beat"), 2, ap+4);
outlet_anything(x->x_outlet_info, gensym("beat"), 2, ap+6);
outlet_anything(x->x_outlet_info, gensym("beat"), 1, ap+1);
outlet_anything(x->x_outlet_info, gensym("bar"), 1, ap+0);
}
static void jack_transport_bang(jack_transport_t * x)
{
float f;
if (!x->x_jack_client)
return;
f = (float)jack_get_current_transport_frame(x->x_jack_client);
jack_transport_timebase(x);
outlet_float(x->x_outlet, f);
}
static void jack_transport_float(jack_transport_t * x, float f)
{
if (!x->x_jack_client)
return;
jack_transport_locate(x->x_jack_client, (jack_nframes_t)f);
}
void jack_transport_setup(void)
{
jack_transport_class = class_new(gensym("jack_transport"),
(t_newmethod)jack_transport_new,
NULL, sizeof(jack_transport_t),
CLASS_DEFAULT, 0);
class_addmethod(jack_transport_class, (t_method)jack_transport_starter,
gensym("start"),0,0);
class_addmethod(jack_transport_class, (t_method)jack_transport_stoper,
gensym("stop"),0,0);
class_addbang(jack_transport_class, (t_method)jack_transport_bang);
class_addfloat(jack_transport_class, (t_method)jack_transport_float);
}
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