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// -----------------------------------------------------------------------
//
// Copyright (C) 2010 Fons Adriaensen <fons@linuxaudio.org>
//
// 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; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// -----------------------------------------------------------------------
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <jack/midiport.h>
#include "jclient.h"
#include "global.h"
Jclient::Jclient (const char *jname, const char *jserv) :
A_thread ("jclient"),
_jack_client (0),
_active (false),
_jname (0)
{
init_jack (jname, jserv);
}
Jclient::~Jclient (void)
{
if (_jack_client) close_jack ();
}
void Jclient::init_jack (const char *jname, const char *jserv)
{
jack_status_t stat;
int opts;
opts = JackNoStartServer;
if (jserv) opts |= JackServerName;
if ((_jack_client = jack_client_open (jname, (jack_options_t) opts, &stat, jserv)) == 0)
{
fprintf (stderr, "Can't connect to JACK.\n");
exit (1);
}
jack_on_shutdown (_jack_client, jack_static_shutdown, (void *) this);
jack_set_process_callback (_jack_client, jack_static_process, (void *) this);
if (jack_activate (_jack_client))
{
fprintf(stderr, "Can't activate JACK.\n");
exit (1);
}
_jname = jack_get_client_name (_jack_client);
_fsamp = jack_get_sample_rate (_jack_client);
_fsize = jack_get_buffer_size (_jack_client);
_ainp_port = jack_port_register (_jack_client, "in", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
_aout_port = jack_port_register (_jack_client, "out", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
_midi_port = jack_port_register (_jack_client, "pitch", JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0);
_retuner = new Retuner (_fsamp);
_notemask = 0xFFF;
clr_midimask ();
_active = true;
}
void Jclient::close_jack ()
{
jack_deactivate (_jack_client);
jack_client_close (_jack_client);
delete _retuner;
}
void Jclient::jack_static_shutdown (void *arg)
{
((Jclient *) arg)->jack_shutdown ();
}
int Jclient::jack_static_process (jack_nframes_t nframes, void *arg)
{
return ((Jclient *) arg)->jack_process (nframes);
}
void Jclient::jack_shutdown (void)
{
send_event (EV_EXIT, 1);
}
void Jclient::clr_midimask (void)
{
int i;
for (i = 0; i < 12; i++) _notes [i] = 0;
_midimask = 0;
}
void Jclient::midi_process (int nframes)
{
int i, b, n, t, v;
void *p;
jack_midi_event_t E;
p = jack_port_get_buffer (_midi_port, nframes);
i = 0;
while (jack_midi_event_get (&E, p, i) == 0)
{
t = E.buffer [0];
n = E.buffer [1];
v = E.buffer [2];
switch (t & 0xF0)
{
case 0x80:
case 0x90:
if (v && (t & 0x10))
{
_notes [n % 12] += 1;
}
else
{
_notes [n % 12] -= 1;
}
break;
}
i++;
}
_midimask = 0;
for (i = 0, b = 1; i < 12; i++, b <<= 1)
{
if (_notes [i]) _midimask |= b;
}
}
int Jclient::jack_process (int nframes)
{
float *inpp;
float *outp;
if (!_active) return 0;
inpp = (float *) jack_port_get_buffer (_ainp_port, nframes);
outp = (float *) jack_port_get_buffer (_aout_port, nframes);
midi_process (nframes);
_retuner->set_notemask (_midimask ? _midimask : _notemask);
_retuner->process (nframes, inpp, outp);
return 0;
}
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