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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55
js/MIDI/LoadPlugin.js
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@ -20,40 +20,41 @@ if (typeof (MIDI.Soundfont) === "undefined") MIDI.Soundfont = {};
var USE_XHR = false;
MIDI.loadPlugin = function(conf) {
if (typeof(conf) === "function") conf = { callback: conf };
if (typeof(conf) === "function") conf = {
callback: conf
};
/// Get the instrument name.
var instruments = conf.instruments || conf.instrument || "acoustic_grand_piano";
if (typeof(instruments) !== "object") instruments = [ instruments ];
instruments.map(function(data) {
if (typeof(data) === "number") data = MIDI.GeneralMIDI.byId[data];
return data;
return data;
});
///
MIDI.soundfontUrl = conf.soundfontUrl || MIDI.soundfontUrl || "./soundfont/";
/// Detect the best type of audio to use.
MIDI.audioDetect(function(types) {
var type = "";
var api = "";
// use the most appropriate plugin if not specified
if (plugins[window.location.hash]) {
type = window.location.hash.substr(1);
if (apis[conf.api]) {
api = conf.api;
} else if (apis[window.location.hash]) {
api = window.location.hash.substr(1);
} else if (navigator.requestMIDIAccess) {
api = "webmidi";
} else if (window.webkitAudioContext) { // Chrome
api = "webaudio";
} else if (window.Audio) { // Firefox
api = "audiotag";
} else { // Internet Explorer
api = "flash";
}
///
if (type === "") {
if (false && navigator.requestMIDIAccess) {
type = "webmidi";
} else if (window.webkitAudioContext) { // Chrome
type = "webaudio";
} else if (window.Audio) { // Firefox
type = "audiotag";
} else { // Internet Explorer
type = "flash";
}
}
if (!connect[type]) return;
if (!connect[api]) return;
// use audio/ogg when supported
var filetype = types["audio/ogg"] ? "ogg" : "mp3";
// load the specified plugin
connect[type](filetype, instruments, conf.callback);
connect[api](filetype, instruments, conf);
});
};
@ -61,24 +62,24 @@ MIDI.loadPlugin = function(conf) {
var connect = {};
connect.webmidi = function(filetype, instruments, callback) {
connect.webmidi = function(filetype, instruments, conf) {
if (MIDI.loader) MIDI.loader.message("Web MIDI API...");
MIDI.WebMIDI.connect(callback);
MIDI.WebMIDI.connect(conf);
};
connect.flash = function(filetype, instruments, callback) {
connect.flash = function(filetype, instruments, conf) {
// fairly quick, but requires loading of individual MP3s (more http requests).
if (MIDI.loader) MIDI.loader.message("Flash API...");
DOMLoader.script.add({
src: "./inc/SoundManager2/script/soundmanager2.js",
verify: "SoundManager",
callback: function () {
MIDI.Flash.connect(callback);
MIDI.Flash.connect(conf);
}
});
};
connect.audiotag = function(filetype, instruments, callback) {
connect.audiotag = function(filetype, instruments, conf) {
if (MIDI.loader) MIDI.loader.message("HTML5 Audio API...");
// works ok, kinda like a drunken tuna fish, across the board.
var queue = createQueue({
@ -106,12 +107,12 @@ connect.audiotag = function(filetype, instruments, callback) {
}
},
onComplete: function() {
MIDI.AudioTag.connect(callback);
MIDI.AudioTag.connect(conf);
}
});
};
connect.webaudio = function(filetype, instruments, callback) {
connect.webaudio = function(filetype, instruments, conf) {
if (MIDI.loader) MIDI.loader.message("Web Audio API...");
// works awesome! safari and chrome support
var queue = createQueue({
@ -139,14 +140,14 @@ connect.webaudio = function(filetype, instruments, callback) {
}
},
onComplete: function() {
MIDI.WebAudioAPI.connect(callback);
MIDI.WebAudioAPI.connect(conf);
}
});
};
/// Helpers
var plugins = {
var apis = {
"#webmidi": true,
"#webaudio": true,
"#audiotag": true,