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midi.js
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midi.js
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! function (e) {
function n() {
var e, n, t, r = navigator.userAgent,
o = navigator.appName,
a = "" + parseFloat(navigator.appVersion),
i = parseInt(navigator.appVersion, 10);
(n = r.indexOf("Opera")) != -1 ? (o = "Opera", a = r.substring(n + 6), (n = r.indexOf("Version")) != -1 && (a = r.substring(n + 8))) : (n = r.indexOf("MSIE")) != -1 ? (o = "Microsoft Internet Explorer", a = r.substring(n + 5)) : (n = r.indexOf("Trident")) != -1 ? (o = "Microsoft Internet Explorer", a = (n = r.indexOf("rv:")) != -1 ? r.substring(n + 3) : "0.0") : (n = r.indexOf("Chrome")) != -1 ? (o = "Chrome", a = r.substring(n + 7)) : (n = r.indexOf("Android")) != -1 ? (o = "Android", a = r.substring(n + 8)) : (n = r.indexOf("Safari")) != -1 ? (o = "Safari", a = r.substring(n + 7), (n = r.indexOf("Version")) != -1 && (a = r.substring(n + 8))) : (n = r.indexOf("Firefox")) != -1 ? (o = "Firefox", a = r.substring(n + 8)) : (e = r.lastIndexOf(" ") + 1) < (n = r.lastIndexOf("/")) && (o = r.substring(e, n), a = r.substring(n + 1), o.toLowerCase() == o.toUpperCase() && (o = navigator.appName)), (t = a.indexOf(";")) != -1 && (a = a.substring(0, t)), (t = a.indexOf(" ")) != -1 && (a = a.substring(0, t)), (t = a.indexOf(")")) != -1 && (a = a.substring(0, t)), i = parseInt("" + a, 10), isNaN(i) && (a = "" + parseFloat(navigator.appVersion), i = parseInt(navigator.appVersion, 10));
var s = new Object;
return s.browserName = o, s.fullVersion = a, s.majorVersion = i, s.appName = navigator.appName, s.userAgent = navigator.userAgent, s.platform = navigator.platform, s
}
function t(e, n) {
for (var t = 0; t < document.scripts.length; t++) {
var r = document.scripts[t].src;
if (k == r) {
if (K) return void n();
var o = newjs.onload;
return newjs.onreadystatechange = function () {
"loaded" !== newjs.readyState && "complete" !== newjs.readyState || (newjs.onreadystatechange = null, K = !0, o(), n())
}, void (newjs.onload = function () {
K = !0, o(), n()
})
}
}
var a = document.getElementsByTagName("script")[0];
newjs = document.createElement("script"), newjs.onreadystatechange = function () {
"loaded" !== newjs.readyState && "complete" !== newjs.readyState || (newjs.onreadystatechange = null, K = !0, n())
}, newjs.onload = function () {
K = !0; n();
}, newjs.onerror = function () {
A("Error: Cannot load JavaScript file " + e)
}, newjs.src = e, newjs.type = "text/javascript", a.parentNode.insertBefore(newjs, a)
}
function r(e) {
if (H = Module.ccall("mid_song_read_wave", "number", ["number", "number", "number", "number"], [W, O, 2 * R, X]), 0 == H) return void p();
for (var n = Math.pow(2, 15), t = 0; t < R; t++) t < H ? e.outputBuffer.getChannelData(0)[t] = Module.getValue(O + 2 * t, "i16") / n : e.outputBuffer.getChannelData(0)[t] = 0;
0 == z && (z = S.currentTime)
}
// Retrives the patch file!!! Changed to return a promise.
function o(e, n, t) {
var o = new XMLHttpRequest;
o.open("GET", n + t, !0), o.responseType = "arraybuffer", o.onerror = function () {
A("Error: Cannot retrieve patch file " + n + t);
reject({
status: this.status,
statusText: o.statusText
});
}, o.onload = function () {
if (200 != o.status) return void A("Error: Cannot retrieve patch file " + n + t + " : " + o.status);
if (F--, FS.createDataFile("pat/", t, new Int8Array(o.response), !0, !0), MIDIjs.message_callback && F > 0 && MIDIjs.message_callback("Instruments to be loaded: " + F), A("Instruments to be loaded: " + F), 0 == F) {
var a = Module.ccall("mid_istream_open_mem", "number", ["number", "number", "number"], [E, T.length, !1]),
s = 32784,
u = Module.ccall("mid_create_options", "number", ["number", "number", "number", "number"], [S.sampleRate, s, 1, 2 * R]);
W = Module.ccall("mid_song_load", "number", ["number", "number"], [a, u]);
Module.ccall("mid_istream_close", "number", ["number"], [a]);
Module.ccall("mid_song_start", "void", ["number"], [W]), V = S.createScriptProcessor(R, 0, 1), O = Module._malloc(2 * R), V.onaudioprocess = r, V.connect(S.destination), P = setInterval(i, J), MIDIjs.message_callback && MIDIjs.message_callback("Playing: " + e), A("Playing: " + e + " ...")
}
}, o.send();
}
// Seems to be some "make request" function that takes in a URL. called at the very bottom
function a(e) {
var n = new XMLHttpRequest;
n.open("GET", e, !0), n.responseType = "arraybuffer", n.onerror = function () {
A("Error: Cannot preload file " + e)
}, n.onload = function () {
if (200 != n.status) return void A("Error: Cannot preload file " + e + " : " + n.status)
}, n.send();
}
function i() {
var e = new Object;
0 != z ? e.time = S.currentTime - z : e.time = 0, MIDIjs.player_callback && MIDIjs.player_callback(e)
}
function s() {
S && S.suspend()
}
function u() {
if (S && S.resume) return S.resume()
}
// play()
function l(e) {
g(), X = !1, R = B;
c(e);
}
function c(e) { // changed, init ternary ops, not if/else
S || (window.AudioContext = window.AudioContext || window.webkitAudioContext, S = new AudioContext);
if (S.resume) {
S.resume();
d(e);
} else {
d(e);
}
}
function d(e) {
z = 0, i(), A("Loading libtimidity ... ");
t(k, function () {
m(e, f, null)
});
}
function m(e, n, t) {
if (-1 != e.indexOf("data:")) {
var r = e.indexOf(",") + 1,
o = atob(e.substring(r));
T = new Uint8Array(new ArrayBuffer(o.length));
for (var a = 0; a < o.length; a++) T[a] = o.charCodeAt(a);
return n("data:audio/x-midi ...", T, t)
}
A("Loading MIDI file " + e + " ..."), t || MIDIjs.message_callback("Loading MIDI file " + e + " ...");
var i = new XMLHttpRequest;
i.open("GET", e, !0), i.responseType = "arraybuffer", i.onerror = function () {
A("Error: Cannot retrieve MIDI file " + e)
};
i.onload = function () {
if (200 != i.status) return void A("Error: Cannot retrieve MIDI file " + e + " : " + i.status);
A("MIDI file loaded: " + e), T = new Int8Array(i.response);
var r = n(e, T, t);
return r
};
i.send();
}
// Changed to return promises of missing instruments, now retrieving.
// For some reason, n() = f() ???. not sure why
function f(e, n, t) {
E = Module._malloc(n.length), Module.writeArrayToMemory(n, E), rval = Module.ccall("mid_init", "number", [], []);
var a = Module.ccall("mid_istream_open_mem", "number", ["number", "number", "number"], [E, n.length, !1]),
s = 32784,
u = Module.ccall("mid_create_options", "number", ["number", "number", "number", "number"], [S.sampleRate, s, 1, 2 * R]);
let promises = [];
if (W = Module.ccall("mid_song_load", "number", ["number", "number"], [a, u]), rval = Module.ccall("mid_istream_close", "number", ["number"], [a]), F = Module.ccall("mid_song_get_num_missing_instruments", "number", ["number"], [W]), 0 < F) {
// Calls the retrieval on missing instruments!
for (var l = 0; l < F; l++) {
var c = Module.ccall("mid_song_get_missing_instrument", "string", ["number", "number"], [W, l]);
promises.push(o(e, q + "pat/", c)) // Probably the full link, e.g. http://asdf.com/pat/arachno-127
}
// console.log(promises);
} else {
Module.ccall("mid_song_start", "void", ["number"], [W]), V = S.createScriptProcessor(R, 0, 1), O = Module._malloc(2 * R), V.onaudioprocess = r, V.connect(S.destination), P = setInterval(i, J), MIDIjs.message_callback && MIDIjs.message_callback("Playing: " + e), A("Playing: " + e + " ...")
}
// Basically trying to return all the promises...
// console.log(promises); // Works here... but not outside.
return promises;
}
// noteOn()
function b(e, n, t) {
X || (X = !0, R = L, c(q + "../midi/initsynth.midi")), 0 != W && Module.ccall("mid_song_note_on", "void", ["number", "number", "number", "number"], [W, e, n, t])
}
function I() {
MIDIjs.noteOn(0, 60, 0)
}
function p() {
V && (V.disconnect(), V.onaudioprocess = 0, V = 0), W && (Module._free(O), Module._free(E), Module.ccall("mid_song_free", "void", ["number"], [W]), W = 0)
}
// stop()
function g() {
p(), clearInterval(P), A(G)
}
function M(e) {
return "undefined" == typeof N && (N = document.createElement("a")), N.href = e, N.href
}
function _(e) {
if (e.indexOf("http:") != -1) return e;
var n = M(e),
t = n.replace("https:", "http:");
return t
}
function v() {
var e = new Object;
0 == z && (z = (new Date).getTime()), e.time = ((new Date).getTime() - z) / 1e3, MIDIjs.player_callback && MIDIjs.player_callback(e)
}
function j(e) {
w(), url = _(e);
var n = document.getElementById("scorioMIDI");
n ? n.lastChild.setAttribute("src", url) : (n = document.createElement("div"), n.setAttribute("id", "scorioMIDI"), n.innerHTML = ' <bgsound src="' + url + '" volume="0"/>', document.body && document.body.appendChild(n)), P = setInterval(v, J), z = 0, V = n, A("Playing " + url + " ...")
}
function w() {
if (V) {
var e = V;
e.lastChild.setAttribute("src", _(q) + "silence.mid"), clearInterval(P), V = 0
}
A(G)
}
function y(e) {
D();
var n = document.getElementById("scorioMIDI");
n ? n.lastChild.setAttribute("data", e) : (n = document.createElement("div"), n.setAttribute("id", "scorioMIDI"), n.innerHTML = '<object data="' + e + '" autostart="true" volume="0" type="audio/mid"></object>', document.body && document.body.appendChild(n)), P = setInterval(v, J), z = 0, V = n, A("Playing " + e + " ...")
}
function D() {
if (V) {
var e = V;
e.parentNode.removeChild(e), clearInterval(P), V = 0
}
A(G)
}
function h(e, n, t) {
var r = Module._malloc(n.length);
Module.writeArrayToMemory(n, r);
var o = (Module.ccall("mid_init", "number", [], []), Module.ccall("mid_istream_open_mem", "number", ["number", "number", "number"], [r, n.length, !1])),
a = 32784,
i = Module.ccall("mid_create_options", "number", ["number", "number", "number", "number"], [44100, a, 1, 2 * R]),
s = Module.ccall("mid_song_load", "number", ["number", "number"], [o, i]),
u = (Module.ccall("mid_istream_close", "number", ["number"], [o]), Module.ccall("mid_song_get_total_time", "number", ["number"], [s]) / 1e3);
Module.ccall("mid_song_free", "void", ["number"], [s]), Module._free(r), t && t(u)
}
// Returns the root website directory (ex: http://0.0.0.0:8000/)
function x() {
for (var e = 0; e < document.scripts.length; e++) {
var n = document.scripts[e].src,
t = n.lastIndexOf("/midi.js");
if (t == n.length - 8) {
return n.substr(0, t + 1)
}
}
return null
}
function A(e) {
U && console.log(e)
}
try {
e.MIDIjs = new Object, e.MIDIjs.initError = "initializing ...";
var C, O, E, T, k, N, P, S = null,
V = 0,
L = 512,
B = 8192,
R = B,
F = 0,
H = 0,
W = 0,
q = "",
z = 0,
G = "",
X = !1,
U = !1,
J = 100,
K = !1;
q = x(), k = q + "libtimidity.js";
var Q = n();
try {
("iPhone" == Q.platform || "iPod" == Q.platform || "iPad" == Q.platform) && Q.majorVersion <= 6 ? C = "none" : (window.AudioContext = window.AudioContext || window.webkitAudioContext, S = new AudioContext, C = "WebAudioAPI")
} catch (Y) {
C = "Microsoft Internet Explorer" == Q.browserName ? "bgsound" : "Android" == Q.browserName ? "none" : "object"
}
e.MIDIjs.set_logging = function (e) {
U = e
}, e.MIDIjs.get_loggging = function () {
return U
}, e.MIDIjs.player_callback = function (e) { }, e.MIDIjs.message_callback = function (e) { }, e.MIDIjs.get_audio_status = function () {
return G
}, e.MIDIjs.get_duration = function (e, n) {
"Microsoft Internet Explorer" == Q.browserName && Q.fullVersion < 10 ? n && n(-1) : t(k, function () {
m(e, h, n)
})
}, e.MIDIjs.pause = function () {
}, e.MIDIjs.resume = function () {
}, e.MIDIjs.resumeWebAudioContext = function () {
}, "WebAudioAPI" == C ? (e.MIDIjs.resumeWebAudioContext = u, e.MIDIjs.pause = s, e.MIDIjs.resume = u, e.MIDIjs.play = l, e.MIDIjs.stop = g, G = "audioMethod: WebAudioAPI, sampleRate (Hz): " + S.sampleRate + ", audioBufferSize (Byte): " + R, e.MIDIjs.noteOn = b, e.MIDIjs.startSynth = I) : "bgsound" == C ? (e.MIDIjs.play = j, e.MIDIjs.stop = w, G = "audioMethod: <bgsound>") : "object" == C ? (e.MIDIjs.play = y, e.MIDIjs.stop = D, G = "audioMethod: <object>") : (e.MIDIjs.play = function (e) { }, e.MIDIjs.stop = function (e) { }, G = "audioMethod: No method found"), "Microsoft Internet Explorer" == Q.browserName && "https:" == location.protocol.toLowerCase() && setTimeout(function () {
j(_(q) + "silence.mid"), clearInterval(P)
}, 1), -1 == location.href.indexOf("scorio.com") && -1 == location.href.indexOf("weblily.net") && -1 == location.href.indexOf("local") || "WebAudioAPI" == C && (a(q + "pat/arachno-127.pat"), a(q + "pat/MT32Drums/mt32drum-41.pat"), a(k)), e.MIDIjs.initError = null
} catch (Z) {
e.MIDIjs = new Object, e.MIDIjs.initError = Z
}
}(this);
//# sourceMappingURL=/midi.js.map