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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* jackmidi.cc
*
* Sat Apr 30 21:11:54 CEST 2011
* Copyright 2011 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <stdlib.h>
#include <event.h>
#include <string>
#include <stdio.h>
#define NOTE_ON 0x90
#include "jackclient.h"
#include <jack/midiport.h>
class JackMidi : public JackProcess {
public:
JackMidi();
~JackMidi();
bool init(int instruments, char *inames[]);
void setParm(std::string parm, std::string value);
bool start();
void stop();
void pre();
event_t *run(size_t pos, size_t len, size_t *nevents);
void post();
void jack_process(jack_nframes_t nframes);
private:
void loadMap(std::string map) {}
JackClient *jackclient;
jack_port_t *midi_port;
size_t pos;
event_t *list;
size_t listsize;
};
JackMidi::JackMidi()
{
jackclient = init_jack_client();
jackclient->addJackProcess(this);
pos = 0;
list = (event_t *)malloc(sizeof(event_t) * 1000);
listsize = 0;
}
JackMidi::~JackMidi()
{
jackclient->removeJackProcess(this);
close_jack_client();
}
bool JackMidi::init(int instruments, char *inames[])
{
midi_port = jack_port_register(jackclient->jack_client,
"drumgizmo_midiin",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsInput,// | JackPortIsTerminal,
0);
return true;
}
void JackMidi::setParm(std::string parm, std::string value)
{
if(parm == "map") loadMap(value);
}
bool JackMidi::start()
{
jackclient->activate();
return true;
}
void JackMidi::stop()
{
}
void JackMidi::pre()
{
}
event_t *JackMidi::run(size_t pos, size_t len, size_t *nevents)
{
*nevents = listsize;
event_t *l = list;
list = (event_t *)malloc(sizeof(event_t) * 1000);
listsize = 0;
return l;
}
void JackMidi::jack_process(jack_nframes_t nframes)
{
void *midibuffer = jack_port_get_buffer(midi_port, nframes);
jack_nframes_t midievents = jack_midi_get_event_count(midibuffer);
for(jack_nframes_t i = 0; i < midievents; i++) {
jack_midi_event_t event;
jack_midi_event_get(&event, midibuffer, i);
if(event.size != 3) continue;
if((event.buffer[0] & NOTE_ON) != NOTE_ON) continue;
int key = event.buffer[1];
int velocity = event.buffer[2];
printf("Event key:%d vel:%d\n", key, velocity);
if(velocity) {
list[listsize].type = TYPE_ONSET;
list[listsize].instrument = key;
list[listsize].velocity = velocity / 127.0;
list[listsize].offset = event.time;
listsize++;
}
}
jack_midi_clear_buffer(midibuffer);
pos += nframes;
}
void JackMidi::post()
{
}
extern "C" {
void *create()
{
return new JackMidi();
}
void destroy(void *h)
{
JackMidi *jackmidi = (JackMidi*)h;
delete jackmidi;
}
bool init(void *h, int i, char *inames[])
{
JackMidi *jackmidi = (JackMidi*)h;
return jackmidi->init(i, inames);
}
void setparm(void *h, const char *parm, const char *value)
{
JackMidi *jackmidi = (JackMidi*)h;
jackmidi->setParm(parm, value);
}
bool start(void *h)
{
JackMidi *jackmidi = (JackMidi*)h;
return jackmidi->start();
}
void stop(void *h)
{
JackMidi *jackmidi = (JackMidi*)h;
jackmidi->stop();
}
void pre(void *h)
{
JackMidi *jackmidi = (JackMidi*)h;
jackmidi->pre();
}
event_t *run(void *h, size_t pos, size_t len, size_t *nev)
{
JackMidi *jackmidi = (JackMidi*)h;
return jackmidi->run(pos, len, nev);
}
void post(void *h)
{
JackMidi *jackmidi = (JackMidi*)h;
jackmidi->post();
}
}
#ifdef TEST_AUDIOINPUTENGINEJACKMIDI
//Additional dependency files
//deps:
//Required cflags (autoconf vars may be used)
//cflags:
//Required link options (autoconf vars may be used)
//libs:
#include "test.h"
TEST_BEGIN;
// TODO: Put some testcode here (see test.h for usable macros).
TEST_END;
#endif/*TEST_AUDIOINPUTENGINEJACKMIDI*/
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