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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* audioinputenginejackmidi.cc
*
* Sun Feb 27 11:33:31 CET 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 "audioinputenginejackmidi.h"
#define NOTE_ON 0x90
extern "C" {
static int _wrap_jack_process(jack_nframes_t nframes, void *arg){
return ((AudioInputEngineJackMidi*)arg)->process(nframes);}
}
AudioInputEngineJackMidi::AudioInputEngineJackMidi()
{
pos = 0;
}
AudioInputEngineJackMidi::~AudioInputEngineJackMidi()
{
// wait_stop();
jack_client_close(jack_client);
}
int AudioInputEngineJackMidi::process(jack_nframes_t nframes)
{
// printf(" jk: %d\n", pos);
void *midibuffer = jack_port_get_buffer(midi_port, nframes);
jack_nframes_t midievents = jack_midi_get_event_count(midibuffer);
// if(midievents) printf("#%d\n", midievents);
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];
//if(velocity == 0) continue;
printf("Event key:%d vel:%d\n", key, velocity);
Event *evt = new EventSine(0, key * 10, (float)velocity / 127.0, 1000);
eventqueue->post(evt, pos + event.time);
}
jack_midi_clear_buffer(midibuffer);
pos += nframes;
return 0;
}
bool AudioInputEngineJackMidi::init(EventQueue *e)
{
eventqueue = e;
jack_status_t status;
jack_client = jack_client_open("DrumGizmo", JackNullOption, &status);
midi_port = jack_port_register(jack_client,
"drumgizmo_midiin",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsInput,// | JackPortIsTerminal,
0);
jack_set_process_callback(jack_client, _wrap_jack_process, this);
jack_activate(jack_client);
return true;
}
#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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