95 lines
4.2 KiB
JavaScript
95 lines
4.2 KiB
JavaScript
/**************************************************************************/
|
|
/* library_godot_webmidi.js */
|
|
/**************************************************************************/
|
|
/* 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. */
|
|
/**************************************************************************/
|
|
|
|
const GodotWebMidi = {
|
|
|
|
$GodotWebMidi__deps: ['$GodotRuntime'],
|
|
$GodotWebMidi: {
|
|
abortControllers: [],
|
|
isListening: false,
|
|
},
|
|
|
|
godot_js_webmidi_open_midi_inputs__deps: ['$GodotWebMidi'],
|
|
godot_js_webmidi_open_midi_inputs__proxy: 'sync',
|
|
godot_js_webmidi_open_midi_inputs__sig: 'iiii',
|
|
godot_js_webmidi_open_midi_inputs: function (pSetInputNamesCb, pOnMidiMessageCb, pDataBuffer, dataBufferLen) {
|
|
if (GodotWebMidi.is_listening) {
|
|
return 0; // OK
|
|
}
|
|
if (!navigator.requestMIDIAccess) {
|
|
return 2; // ERR_UNAVAILABLE
|
|
}
|
|
const setInputNamesCb = GodotRuntime.get_func(pSetInputNamesCb);
|
|
const onMidiMessageCb = GodotRuntime.get_func(pOnMidiMessageCb);
|
|
|
|
GodotWebMidi.isListening = true;
|
|
navigator.requestMIDIAccess().then((midi) => {
|
|
const inputs = [...midi.inputs.values()];
|
|
const inputNames = inputs.map((input) => input.name);
|
|
|
|
const c_ptr = GodotRuntime.allocStringArray(inputNames);
|
|
setInputNamesCb(inputNames.length, c_ptr);
|
|
GodotRuntime.freeStringArray(c_ptr, inputNames.length);
|
|
|
|
inputs.forEach((input, i) => {
|
|
const abortController = new AbortController();
|
|
GodotWebMidi.abortControllers.push(abortController);
|
|
input.addEventListener('midimessage', (event) => {
|
|
const status = event.data[0];
|
|
const data = event.data.slice(1);
|
|
const size = data.length;
|
|
|
|
if (size > dataBufferLen) {
|
|
throw new Error(`data too big ${size} > ${dataBufferLen}`);
|
|
}
|
|
HEAPU8.set(data, pDataBuffer);
|
|
|
|
onMidiMessageCb(i, status, pDataBuffer, data.length);
|
|
}, { signal: abortController.signal });
|
|
});
|
|
});
|
|
|
|
return 0; // OK
|
|
},
|
|
|
|
godot_js_webmidi_close_midi_inputs__deps: ['$GodotWebMidi'],
|
|
godot_js_webmidi_close_midi_inputs__proxy: 'sync',
|
|
godot_js_webmidi_close_midi_inputs__sig: 'v',
|
|
godot_js_webmidi_close_midi_inputs: function () {
|
|
for (const abortController of GodotWebMidi.abortControllers) {
|
|
abortController.abort();
|
|
}
|
|
GodotWebMidi.abortControllers = [];
|
|
GodotWebMidi.isListening = false;
|
|
},
|
|
};
|
|
|
|
mergeInto(LibraryManager.library, GodotWebMidi);
|