deac/MIDI.js
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re-enable Web MIDI API with fallback

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Michael Deal 2013-01-26 20:45:41 -08:00
parent 381f4c7da2
commit 41f90e8bb1
2 changed files with 50 additions and 42 deletions
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37
js/MIDI/Plugin.js
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@ -25,7 +25,7 @@ if (typeof (MIDI) === "undefined") var MIDI = {};
(function() { "use strict";
var setPlugin = function(root) {
MIDI.technology = root.technology;
MIDI.api = root.api;
MIDI.setVolume = root.setVolume;
MIDI.programChange = root.programChange;
MIDI.noteOn = root.noteOn;
@ -50,7 +50,7 @@ var setPlugin = function(root) {
var output = null;
var channels = [];
var root = MIDI.WebMIDI = {
technology: "Web MIDI API"
api: "webmidi"
};
root.setVolume = function (channel, volume) { // set channel volume
output.send([0xB0 + channel, 0x07, volume]);
@ -96,14 +96,21 @@ var setPlugin = function(root) {
return plugin.getOutputs();
};
root.connect = function (callback) {
root.connect = function (conf) {
setPlugin(root);
navigator.requestMIDIAccess(function (access) {
plugin = access;
output = plugin.getOutput(0);
if (callback) callback();
}, function (err) {
console.log("uh-oh! Something went wrong! Error code: " + err.code );
if (conf.callback) conf.callback();
}, function (err) { // well at least we tried!
if (window.webkitAudioContext) { // Chrome
conf.api = "webaudio";
} else if (window.Audio) { // Firefox
conf.api = "audiotag";
} else { // Internet Explorer
conf.api = "flash";
}
MIDI.loadPlugin(conf);
});
};
})();
@ -120,7 +127,7 @@ if (window.AudioContext || window.webkitAudioContext) (function () {
var AudioContext = window.AudioContext || window.webkitAudioContext;
var root = MIDI.WebAudioAPI = {
technology: "Web Audio API"
api: "webaudio"
};
var ctx;
var sources = {};
@ -213,7 +220,7 @@ if (window.AudioContext || window.webkitAudioContext) (function () {
return ret;
};
root.connect = function (callback) {
root.connect = function (conf) {
setPlugin(root);
//
MIDI.Player.ctx = ctx = new AudioContext();
@ -226,7 +233,7 @@ if (window.AudioContext || window.webkitAudioContext) (function () {
var oncomplete = function(instrument) {
delete pending[instrument];
for (var key in pending) break;
if (!key) callback();
if (!key) conf.callback();
};
for (var instrument in MIDI.Soundfont) {
pending[instrument] = true;
@ -248,7 +255,7 @@ if (window.AudioContext || window.webkitAudioContext) (function () {
if (window.Audio) (function () {
var root = MIDI.AudioTag = {
technology: "Audio Tag"
api: "audiotag"
};
var note2id = {};
var volume = 1; // floating point
@ -336,7 +343,7 @@ if (window.Audio) (function () {
}
};
root.connect = function (callback) {
root.connect = function (conf) {
var loading = {};
for (var key in MIDI.keyToNote) {
note2id[MIDI.keyToNote[key]] = key;
@ -346,7 +353,7 @@ if (window.Audio) (function () {
}
setPlugin(root);
///
if (callback) callback();
if (conf.callback) conf.callback();
};
})();
@ -361,7 +368,7 @@ if (window.Audio) (function () {
(function () {
var root = MIDI.Flash = {
technology: "Flash"
api: "flash"
};
var noteReverse = {};
var notes = {};
@ -414,7 +421,7 @@ if (window.Audio) (function () {
};
root.connect = function (callback) {
root.connect = function (conf) {
soundManager.flashVersion = 9;
soundManager.useHTML5Audio = true;
soundManager.url = '../inc/SoundManager2/swf/';
@ -452,7 +459,7 @@ if (window.Audio) (function () {
var interval = window.setInterval(function () {
if (loaded.length !== 88) return;
window.clearInterval(interval);
if (callback) callback();
if (conf.callback) conf.callback();
}, 25);
};
soundManager.onerror = function () {