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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* midiplayer.cc
*
* Sat Jul 26 15:23:19 CEST 2008
* Copyright 2008 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 "midiplayer.h"
int _process(jack_nframes_t nframes, void *arg)
{
return ((MidiPlayer*)arg)->process(nframes);
}
MidiPlayer::MidiPlayer(std::string filename)
{
timeline = 0;
cur_event = NULL;
printf("Loading MIDI file: %s\n", filename.c_str());
smf = smf_load(filename.c_str());
printf("done\n");
jack_status_t status;
jack_client_t *jack_client = jack_client_open("MidiGizmo", JackNullOption, &status);
port = jack_port_register(jack_client,
"midi_out",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsOutput,// | JackPortIsTerminal,
0);
jack_set_process_callback(jack_client, _process, this);
jack_activate(jack_client);
jack_connect(jack_client, "MidiGizmo:midi_out", "DrumGizmo:midi_in");
jack_connect(jack_client, "DrumGizmo:Alesis", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Kick-R", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Kick-L", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:SnareTop", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:SnareBottom", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:SnareTrigger", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Tom1", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Tom2", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Tom3", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Tom4", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Ride", "system:playback_1");
// jack_connect(jack_client, "DrumGizmo:Hihat", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Alesis", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Kick-R", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Kick-L", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:SnareTop", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:SnareBottom", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:SnareTrigger", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Tom1", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Tom2", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Tom3", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Tom4", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Ride", "system:playback_2");
// jack_connect(jack_client, "DrumGizmo:Hihat", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:OH-R", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:OH-L", "system:playback_2");
jack_connect(jack_client, "DrumGizmo:Amb-R", "system:playback_1");
jack_connect(jack_client, "DrumGizmo:Amb-L", "system:playback_2");
/*
timer = 0;
next = 44100;
*/
}
MidiPlayer::~MidiPlayer()
{
smf_delete(smf);
}
#if 0 // All
#define NUM_INST 11
static int inst[] = { 35, 36, 38, 46, 41, 43, 45, 47, 49, 57, 51 };
#endif
#if 0 // Cymbals
#define NUM_INST 3
static int inst[] = { 51, 49, 57 };
#endif
#if 1 // Toms
#define NUM_INST 4
static int inst[] = { 41, 43, 45, 47 };
#endif
#if 0 // Kicks
#define NUM_INST 2
static int inst[] = { 35, 36 };
#endif
int MidiPlayer::process(jack_nframes_t nframes)
{
// if(jack_port_connected_to(test_midi_port, "DrumGizmo:midi_in")) {
void* port_buf = jack_port_get_buffer(port, nframes);
double cur_max_time = (double)(timeline + nframes) / 44100.0;
double cur_min_time = (double)(timeline) / 44100.0;
printf("["); fflush(stdout);
if(!cur_event) cur_event = smf_get_next_event(smf);
do {
if(cur_event) {
if(!smf_event_is_metadata(cur_event)) {
printf("p"); fflush(stdout);
jack_nframes_t time = (jack_nframes_t)((cur_event->time_seconds - cur_min_time) * 44100.0);
jack_midi_event_write(port_buf, time, (jack_midi_data_t*)cur_event->midi_buffer,
cur_event->midi_buffer_length);
}
} else {
smf_rewind(smf);
}
cur_event = smf_get_next_event(smf);
while(!cur_event) cur_event = smf_get_next_event(smf);
} while(cur_event->time_seconds < cur_max_time && cur_event->time_seconds >= cur_min_time);
timeline += nframes;
printf("]\n"); fflush(stdout);
/*
if(timer > next) { // activate every second (44100 samples)
jack_nframes_t time = (jack_nframes_t)(((float)rand() / (float)RAND_MAX) * nframes);
size_t size = 3;
jack_midi_data_t note[] = { NOTE_ON, inst[rand() % NUM_INST], rand() % 127};
jack_midi_event_write(port_buf, time, note, size);
timer = 0;
next = (size_t)(((float)rand() / (float)RAND_MAX) * 0.2 * 44100);
}
timer += nframes;
*/
return 0;
}
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