Added a new MIDIDriver class

1 files changed, 107 insertions, 0 deletions

diff --git a/core/os/midi_driver.cpp b/core/os/midi_driver.cpp
new file mode 100644
index 0000000000..7b4f84473c
--- /dev/null
+++ b/core/os/midi_driver.cpp
@@ -0,0 +1,107 @@
+/*************************************************************************/
+/*  midi_driver.cpp                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "midi_driver.h"
+
+#include "main/input_default.h"
+#include "os/os.h"
+
+MIDIDriver *MIDIDriver::singleton = NULL;
+MIDIDriver *MIDIDriver::get_singleton() {
+
+	return singleton;
+}
+
+void MIDIDriver::set_singleton() {
+
+	singleton = this;
+}
+
+void MIDIDriver::receive_input_packet(uint64_t timestamp, uint8_t *data, uint32_t length) {
+
+	Ref<InputEventMIDI> event;
+	event.instance();
+
+	if (length >= 1) {
+		event->set_channel(data[0] & 0xF);
+		event->set_message(data[0] >> 4);
+	}
+
+	switch (event->get_message()) {
+		case MIDI_MESSAGE_AFTERTOUCH:
+			if (length >= 3) {
+				event->set_pitch(data[1]);
+				event->set_pressure(data[2]);
+			}
+			break;
+
+		case MIDI_MESSAGE_CONTROL_CHANGE:
+			if (length >= 3) {
+				event->set_controller_number(data[1]);
+				event->set_controller_value(data[2]);
+			}
+			break;
+
+		case MIDI_MESSAGE_NOTE_ON:
+		case MIDI_MESSAGE_NOTE_OFF:
+		case MIDI_MESSAGE_PITCH_BEND:
+			if (length >= 3) {
+				event->set_pitch(data[1]);
+				event->set_velocity(data[2]);
+			}
+			break;
+
+		case MIDI_MESSAGE_PROGRAM_CHANGE:
+			if (length >= 2) {
+				event->set_instrument(data[1]);
+			}
+			break;
+
+		case MIDI_MESSAGE_CHANNEL_PRESSURE:
+			if (length >= 2) {
+				event->set_pressure(data[1]);
+			}
+			break;
+	}
+
+	InputDefault *id = Object::cast_to<InputDefault>(Input::get_singleton());
+	id->parse_input_event(event);
+}
+
+PoolStringArray MIDIDriver::get_connected_inputs() {
+
+	PoolStringArray list;
+	return list;
+}
+
+MIDIDriver::MIDIDriver() {
+
+	set_singleton();
+}