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a7505ee0bc
Co-authored-by: Adam Scott <ascott.ca@gmail.com> Co-authored-by: A Thousand Ships <96648715+AThousandShips@users.noreply.github.com>
94 lines
4.2 KiB
JavaScript
94 lines
4.2 KiB
JavaScript
/**************************************************************************/
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/* library_godot_webmidi.js */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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const GodotWebMidi = {
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$GodotWebMidi__deps: ['$GodotRuntime'],
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$GodotWebMidi: {
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abortControllers: [],
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isListening: false,
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},
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godot_js_webmidi_open_midi_inputs__deps: ['$GodotWebMidi'],
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godot_js_webmidi_open_midi_inputs__proxy: 'sync',
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godot_js_webmidi_open_midi_inputs__sig: 'iiii',
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godot_js_webmidi_open_midi_inputs: function (pSetInputNamesCb, pOnMidiMessageCb, pDataBuffer, dataBufferLen) {
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if (GodotWebMidi.is_listening) {
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return 0; // OK
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}
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if (!navigator.requestMIDIAccess) {
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return 2; // ERR_UNAVAILABLE
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}
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const setInputNamesCb = GodotRuntime.get_func(pSetInputNamesCb);
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const onMidiMessageCb = GodotRuntime.get_func(pOnMidiMessageCb);
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GodotWebMidi.isListening = true;
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navigator.requestMIDIAccess().then((midi) => {
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const inputs = [...midi.inputs.values()];
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const inputNames = inputs.map((input) => input.name);
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const c_ptr = GodotRuntime.allocStringArray(inputNames);
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setInputNamesCb(inputNames.length, c_ptr);
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GodotRuntime.freeStringArray(c_ptr, inputNames.length);
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inputs.forEach((input, i) => {
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const abortController = new AbortController();
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GodotWebMidi.abortControllers.push(abortController);
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input.addEventListener('midimessage', (event) => {
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const status = event.data[0];
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const data = event.data.slice(1);
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const size = data.length;
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if (size > dataBufferLen) {
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throw new Error(`data too big ${size} > ${dataBufferLen}`);
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}
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HEAPU8.set(data, pDataBuffer);
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onMidiMessageCb(i, status, pDataBuffer, data.length);
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}, { signal: abortController.signal });
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});
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});
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return 0; // OK
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},
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godot_js_webmidi_close_midi_inputs__deps: ['$GodotWebMidi'],
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godot_js_webmidi_close_midi_inputs__proxy: 'sync',
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godot_js_webmidi_close_midi_inputs__sig: 'v',
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godot_js_webmidi_close_midi_inputs: function () {
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for (const abortController of GodotWebMidi.abortControllers) {
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abortController.abort();
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}
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GodotWebMidi.abortControllers = [];
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GodotWebMidi.isListening = false;
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},
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};
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mergeInto(LibraryManager.library, GodotWebMidi);
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