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Original file line number | Diff line number | Diff line change |
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/* | ||
------------------------------------- | ||
MIDI.audioDetect : 0.3 | ||
------------------------------------- | ||
https://github.com/mudcube/MIDI.js | ||
------------------------------------- | ||
Probably, Maybe, No... Absolutely! | ||
------------------------------------- | ||
Test to see what types of <audio> MIME types are playable by the browser. | ||
------------------------------------- | ||
*/ | ||
|
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if (typeof(MIDI) === "undefined") var MIDI = {}; | ||
|
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(function() { "use strict"; | ||
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var supports = {}; | ||
var pending = 0; | ||
var canPlayThrough = function (src) { | ||
pending ++; | ||
var audio = new Audio(); | ||
var mime = src.split(";")[0]; | ||
audio.id = "audio"; | ||
audio.setAttribute("preload", "auto"); | ||
audio.setAttribute("audiobuffer", true); | ||
audio.addEventListener("error", function() { | ||
supports[mime] = false; | ||
pending --; | ||
}, false); | ||
audio.addEventListener("canplaythrough", function() { | ||
supports[mime] = true; | ||
pending --; | ||
}, false); | ||
audio.src = "data:" + src; | ||
document.body.appendChild(audio); | ||
}; | ||
|
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MIDI.audioDetect = function(callback) { | ||
// check whether <audio> tag is supported | ||
if (typeof(Audio) === "undefined") return callback({}); | ||
// check whether canPlayType is supported | ||
var audio = new Audio(); | ||
if (typeof(audio.canPlayType) === "undefined") return callback(supports); | ||
// see what we can learn from the browser | ||
var vorbis = audio.canPlayType('audio/ogg; codecs="vorbis"'); | ||
vorbis = (vorbis === "probably" || vorbis === "maybe"); | ||
var mpeg = audio.canPlayType('audio/mpeg'); | ||
mpeg = (mpeg === "probably" || mpeg === "maybe"); | ||
// maybe nothing is supported | ||
if (!vorbis && !mpeg) { | ||
callback(supports); | ||
return; | ||
} | ||
// or maybe something is supported | ||
if (vorbis) canPlayThrough("audio/ogg;base64,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"); | ||
if (mpeg) canPlayThrough("audio/mpeg;base64,/+MYxAAAAANIAUAAAASEEB/jwOFM/0MM/90b/+RhST//w4NFwOjf///PZu////9lns5GFDv//l9GlUIEEIAAAgIg8Ir/JGq3/+MYxDsLIj5QMYcoAP0dv9HIjUcH//yYSg+CIbkGP//8w0bLVjUP///3Z0x5QCAv/yLjwtGKTEFNRTMuOTeqqqqqqqqqqqqq/+MYxEkNmdJkUYc4AKqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq"); | ||
// lets find out! | ||
var time = (new Date()).getTime(); | ||
var interval = window.setInterval(function() { | ||
var now = (new Date()).getTime(); | ||
var maxExecution = now - time > 5000; | ||
if (!pending || maxExecution) { | ||
window.clearInterval(interval); | ||
callback(supports); | ||
} | ||
}, 1); | ||
}; | ||
|
||
})(); |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,67 @@ | ||
// http://ntt.cc/2008/01/19/base64-encoder-decoder-with-javascript.html | ||
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// window.atob and window.btoa | ||
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(function (window) { | ||
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var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; | ||
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window.btoa || (window.btoa = function encode64(input) { | ||
input = escape(input); | ||
var output = ""; | ||
var chr1, chr2, chr3 = ""; | ||
var enc1, enc2, enc3, enc4 = ""; | ||
var i = 0; | ||
do { | ||
chr1 = input.charCodeAt(i++); | ||
chr2 = input.charCodeAt(i++); | ||
chr3 = input.charCodeAt(i++); | ||
enc1 = chr1 >> 2; | ||
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); | ||
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); | ||
enc4 = chr3 & 63; | ||
if (isNaN(chr2)) { | ||
enc3 = enc4 = 64; | ||
} else if (isNaN(chr3)) { | ||
enc4 = 64; | ||
} | ||
output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4); | ||
chr1 = chr2 = chr3 = ""; | ||
enc1 = enc2 = enc3 = enc4 = ""; | ||
} while (i < input.length); | ||
return output; | ||
}); | ||
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window.atob || (window.atob = function(input) { | ||
var output = ""; | ||
var chr1, chr2, chr3 = ""; | ||
var enc1, enc2, enc3, enc4 = ""; | ||
var i = 0; | ||
// remove all characters that are not A-Z, a-z, 0-9, +, /, or = | ||
var base64test = /[^A-Za-z0-9\+\/\=]/g; | ||
if (base64test.exec(input)) { | ||
alert("There were invalid base64 characters in the input text.\n" + "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" + "Expect errors in decoding."); | ||
} | ||
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, ""); | ||
do { | ||
enc1 = keyStr.indexOf(input.charAt(i++)); | ||
enc2 = keyStr.indexOf(input.charAt(i++)); | ||
enc3 = keyStr.indexOf(input.charAt(i++)); | ||
enc4 = keyStr.indexOf(input.charAt(i++)); | ||
chr1 = (enc1 << 2) | (enc2 >> 4); | ||
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2); | ||
chr3 = ((enc3 & 3) << 6) | enc4; | ||
output = output + String.fromCharCode(chr1); | ||
if (enc3 != 64) { | ||
output = output + String.fromCharCode(chr2); | ||
} | ||
if (enc4 != 64) { | ||
output = output + String.fromCharCode(chr3); | ||
} | ||
chr1 = chr2 = chr3 = ""; | ||
enc1 = enc2 = enc3 = enc4 = ""; | ||
} while (i < input.length); | ||
return unescape(output); | ||
}); | ||
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}(this)); |
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