godot/platform/web/webmidi_driver.cpp
Ryan Braganza a7505ee0bc Add Web MIDI support
Co-authored-by: Adam Scott <ascott.ca@gmail.com>
Co-authored-by: A Thousand Ships <96648715+AThousandShips@users.noreply.github.com>
2024-12-15 21:24:15 +11:00

98 lines
4.3 KiB
C++

/**************************************************************************/
/* webmidi_driver.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "webmidi_driver.h"
#ifdef PROXY_TO_PTHREAD_ENABLED
#include "core/object/callable_method_pointer.h"
#endif
MIDIDriverWebMidi *MIDIDriverWebMidi::get_singleton() {
return static_cast<MIDIDriverWebMidi *>(MIDIDriver::get_singleton());
}
Error MIDIDriverWebMidi::open() {
Error error = (Error)godot_js_webmidi_open_midi_inputs(&MIDIDriverWebMidi::set_input_names_callback, &MIDIDriverWebMidi::on_midi_message, _event_buffer, MIDIDriverWebMidi::MAX_EVENT_BUFFER_LENGTH);
if (error == ERR_UNAVAILABLE) {
ERR_PRINT("Web MIDI is not supported on this browser.");
}
return error;
}
void MIDIDriverWebMidi::close() {
get_singleton()->connected_input_names.clear();
godot_js_webmidi_close_midi_inputs();
}
MIDIDriverWebMidi::~MIDIDriverWebMidi() {
close();
}
void MIDIDriverWebMidi::set_input_names_callback(int p_size, const char **p_input_names) {
Vector<String> input_names;
for (int i = 0; i < p_size; i++) {
input_names.append(String::utf8(p_input_names[i]));
}
#ifdef PROXY_TO_PTHREAD_ENABLED
if (!Thread::is_main_thread()) {
callable_mp_static(MIDIDriverWebMidi::_set_input_names_callback).call_deferred(input_names);
return;
}
#endif
_set_input_names_callback(input_names);
}
void MIDIDriverWebMidi::_set_input_names_callback(const Vector<String> &p_input_names) {
get_singleton()->connected_input_names.clear();
for (const String &input_name : p_input_names) {
get_singleton()->connected_input_names.push_back(input_name);
}
}
void MIDIDriverWebMidi::on_midi_message(int p_device_index, int p_status, const uint8_t *p_data, int p_data_len) {
PackedByteArray data;
data.resize(p_data_len);
uint8_t *data_ptr = data.ptrw();
for (int i = 0; i < p_data_len; i++) {
data_ptr[i] = p_data[i];
}
#ifdef PROXY_TO_PTHREAD_ENABLED
if (!Thread::is_main_thread()) {
callable_mp_static(MIDIDriverWebMidi::_on_midi_message).call_deferred(p_device_index, p_status, data, p_data_len);
return;
}
#endif
_on_midi_message(p_device_index, p_status, data, p_data_len);
}
void MIDIDriverWebMidi::_on_midi_message(int p_device_index, int p_status, const PackedByteArray &p_data, int p_data_len) {
MIDIDriver::send_event(p_device_index, p_status, p_data.ptr(), p_data_len);
}