Made midi mapper.

1 files changed, 56 insertions, 0 deletions

diff --git a/src/midimapper.cc b/src/midimapper.cc
new file mode 100644
index 0000000..ed8c252
--- /dev/null
+++ b/src/midimapper.cc
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            midimapper.cc
+ *
+ *  Mon Jul 21 15:24:08 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 "midimapper.h"
+
+#define NOTE_ON 0x90
+
+MidiMapper::MidiMapper()
+{
+  for(int i = 0; i < 16; i++) _map[i] = i % 2;
+}
+
+//http://ccrma-www.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html
+int MidiMapper::map(jack_midi_event_t event)
+{
+  // Parse midi event
+  printf("[ Time: %d  Size: %d  ", event.time, event.size);
+  for(size_t j = 0; j < event.size; j++) {
+    jack_midi_data_t m = event.buffer[j];
+    printf("  Data: %d ", m);
+  }
+  printf("]\n");
+
+  if(event.size == 3) return -1;
+  if(event.buffer[0] != NOTE_ON) return -1;
+
+  int key = event.buffer[1];
+  //  int velocity = event.buffer[2];
+
+  if(_map.find(key) == _map.end()) return -1; // key is not in map.
+
+  return _map[key];
+}