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authordeva <deva>2011-03-01 19:19:02 +0000
committerdeva <deva>2011-03-01 19:19:02 +0000
commite190d38057892b69246391841b234a368bc2b4ad (patch)
tree34f946bc1c3b86997d4cd45e63c433ef07b36486 /src/audioinputenginejackmidi.cc
parentc393edc920f8ee126d1bced3500b6bc1ecf86f83 (diff)
MAJOR rewrite of the internals. New input/output 'plugin' system. Still a lot missing.
Diffstat (limited to 'src/audioinputenginejackmidi.cc')
-rw-r--r--src/audioinputenginejackmidi.cc116
1 files changed, 116 insertions, 0 deletions
diff --git a/src/audioinputenginejackmidi.cc b/src/audioinputenginejackmidi.cc
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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*/