3937 lines
116 KiB
JavaScript
3937 lines
116 KiB
JavaScript
|
!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.AV=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
|
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var key, val, _ref;
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_ref = _dereq_('./src/aurora');
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for (key in _ref) {
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val = _ref[key];
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exports[key] = val;
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}
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_dereq_('./src/devices/webaudio');
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_dereq_('./src/devices/mozilla');
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},{"./src/aurora":3,"./src/devices/mozilla":22,"./src/devices/webaudio":24}],2:[function(_dereq_,module,exports){
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||
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var Asset, BufferSource, Decoder, Demuxer, EventEmitter, FileSource, HTTPSource,
|
||
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__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
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__hasProp = {}.hasOwnProperty,
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__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
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EventEmitter = _dereq_('./core/events');
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HTTPSource = _dereq_('./sources/node/http');
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FileSource = _dereq_('./sources/node/file');
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BufferSource = _dereq_('./sources/buffer');
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Demuxer = _dereq_('./demuxer');
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Decoder = _dereq_('./decoder');
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Asset = (function(_super) {
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__extends(Asset, _super);
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|
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function Asset(source) {
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this.source = source;
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this._decode = __bind(this._decode, this);
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this.findDecoder = __bind(this.findDecoder, this);
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this.probe = __bind(this.probe, this);
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this.buffered = 0;
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|
this.duration = null;
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this.format = null;
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this.metadata = null;
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this.active = false;
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this.demuxer = null;
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this.decoder = null;
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this.source.once('data', this.probe);
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this.source.on('error', (function(_this) {
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return function(err) {
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_this.emit('error', err);
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return _this.stop();
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};
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})(this));
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this.source.on('progress', (function(_this) {
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return function(buffered) {
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_this.buffered = buffered;
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return _this.emit('buffer', _this.buffered);
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};
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})(this));
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}
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Asset.fromURL = function(url) {
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return new Asset(new HTTPSource(url));
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};
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Asset.fromFile = function(file) {
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return new Asset(new FileSource(file));
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};
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Asset.fromBuffer = function(buffer) {
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return new Asset(new BufferSource(buffer));
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};
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Asset.prototype.start = function(decode) {
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if (this.active) {
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return;
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}
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if (decode != null) {
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this.shouldDecode = decode;
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}
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if (this.shouldDecode == null) {
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this.shouldDecode = true;
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}
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this.active = true;
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this.source.start();
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if (this.decoder && this.shouldDecode) {
|
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return this._decode();
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}
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};
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Asset.prototype.stop = function() {
|
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if (!this.active) {
|
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return;
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}
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this.active = false;
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return this.source.pause();
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};
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Asset.prototype.get = function(event, callback) {
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if (event !== 'format' && event !== 'duration' && event !== 'metadata') {
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return;
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}
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if (this[event] != null) {
|
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return callback(this[event]);
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} else {
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this.once(event, (function(_this) {
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return function(value) {
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_this.stop();
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return callback(value);
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};
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})(this));
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return this.start();
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||
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}
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||
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};
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Asset.prototype.decodePacket = function() {
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return this.decoder.decode();
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};
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Asset.prototype.decodeToBuffer = function(callback) {
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var chunks, dataHandler, length;
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length = 0;
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chunks = [];
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this.on('data', dataHandler = function(chunk) {
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length += chunk.length;
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return chunks.push(chunk);
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});
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this.once('end', function() {
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var buf, chunk, offset, _i, _len;
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buf = new Float32Array(length);
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offset = 0;
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for (_i = 0, _len = chunks.length; _i < _len; _i++) {
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chunk = chunks[_i];
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buf.set(chunk, offset);
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offset += chunk.length;
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||
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}
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this.off('data', dataHandler);
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return callback(buf);
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});
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return this.start();
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||
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};
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Asset.prototype.probe = function(chunk) {
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var demuxer;
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if (!this.active) {
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return;
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}
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demuxer = Demuxer.find(chunk);
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if (!demuxer) {
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return this.emit('error', 'A demuxer for this container was not found.');
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||
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}
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this.demuxer = new demuxer(this.source, chunk);
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this.demuxer.on('format', this.findDecoder);
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this.demuxer.on('duration', (function(_this) {
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return function(duration) {
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_this.duration = duration;
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return _this.emit('duration', _this.duration);
|
||
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};
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})(this));
|
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this.demuxer.on('metadata', (function(_this) {
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return function(metadata) {
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_this.metadata = metadata;
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return _this.emit('metadata', _this.metadata);
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||
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};
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})(this));
|
||
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return this.demuxer.on('error', (function(_this) {
|
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return function(err) {
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||
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_this.emit('error', err);
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return _this.stop();
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};
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})(this));
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};
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Asset.prototype.findDecoder = function(format) {
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var decoder, div;
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this.format = format;
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if (!this.active) {
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||
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return;
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||
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}
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||
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this.emit('format', this.format);
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||
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decoder = Decoder.find(this.format.formatID);
|
||
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if (!decoder) {
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||
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return this.emit('error', "A decoder for " + this.format.formatID + " was not found.");
|
||
|
}
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||
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this.decoder = new decoder(this.demuxer, this.format);
|
||
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if (this.format.floatingPoint) {
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||
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this.decoder.on('data', (function(_this) {
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||
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return function(buffer) {
|
||
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return _this.emit('data', buffer);
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||
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};
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})(this));
|
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} else {
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div = Math.pow(2, this.format.bitsPerChannel - 1);
|
||
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this.decoder.on('data', (function(_this) {
|
||
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return function(buffer) {
|
||
|
var buf, i, sample, _i, _len;
|
||
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buf = new Float32Array(buffer.length);
|
||
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for (i = _i = 0, _len = buffer.length; _i < _len; i = ++_i) {
|
||
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sample = buffer[i];
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||
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buf[i] = sample / div;
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||
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}
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return _this.emit('data', buf);
|
||
|
};
|
||
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})(this));
|
||
|
}
|
||
|
this.decoder.on('error', (function(_this) {
|
||
|
return function(err) {
|
||
|
_this.emit('error', err);
|
||
|
return _this.stop();
|
||
|
};
|
||
|
})(this));
|
||
|
this.decoder.on('end', (function(_this) {
|
||
|
return function() {
|
||
|
return _this.emit('end');
|
||
|
};
|
||
|
})(this));
|
||
|
this.emit('decodeStart');
|
||
|
if (this.shouldDecode) {
|
||
|
return this._decode();
|
||
|
}
|
||
|
};
|
||
|
|
||
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Asset.prototype._decode = function() {
|
||
|
while (this.decoder.decode() && this.active) {
|
||
|
continue;
|
||
|
}
|
||
|
if (this.active) {
|
||
|
return this.decoder.once('data', this._decode);
|
||
|
}
|
||
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};
|
||
|
|
||
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return Asset;
|
||
|
|
||
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})(EventEmitter);
|
||
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|
||
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module.exports = Asset;
|
||
|
|
||
|
|
||
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},{"./core/events":9,"./decoder":12,"./demuxer":15,"./sources/buffer":32,"./sources/node/file":30,"./sources/node/http":31}],3:[function(_dereq_,module,exports){
|
||
|
var key, val, _ref;
|
||
|
|
||
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_ref = _dereq_('./aurora_base');
|
||
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for (key in _ref) {
|
||
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val = _ref[key];
|
||
|
exports[key] = val;
|
||
|
}
|
||
|
|
||
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_dereq_('./demuxers/caf');
|
||
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_dereq_('./demuxers/m4a');
|
||
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_dereq_('./demuxers/aiff');
|
||
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_dereq_('./demuxers/wave');
|
||
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_dereq_('./demuxers/au');
|
||
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_dereq_('./decoders/lpcm');
|
||
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_dereq_('./decoders/xlaw');
|
||
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|
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},{"./aurora_base":4,"./decoders/lpcm":13,"./decoders/xlaw":14,"./demuxers/aiff":16,"./demuxers/au":17,"./demuxers/caf":18,"./demuxers/m4a":19,"./demuxers/wave":20}],4:[function(_dereq_,module,exports){
|
||
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exports.Base = _dereq_('./core/base');
|
||
|
|
||
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exports.Buffer = _dereq_('./core/buffer');
|
||
|
|
||
|
exports.BufferList = _dereq_('./core/bufferlist');
|
||
|
|
||
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exports.Stream = _dereq_('./core/stream');
|
||
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|
||
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exports.Bitstream = _dereq_('./core/bitstream');
|
||
|
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exports.EventEmitter = _dereq_('./core/events');
|
||
|
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exports.UnderflowError = _dereq_('./core/underflow');
|
||
|
|
||
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exports.HTTPSource = _dereq_('./sources/node/http');
|
||
|
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||
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exports.FileSource = _dereq_('./sources/node/file');
|
||
|
|
||
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exports.BufferSource = _dereq_('./sources/buffer');
|
||
|
|
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exports.Demuxer = _dereq_('./demuxer');
|
||
|
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exports.Decoder = _dereq_('./decoder');
|
||
|
|
||
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exports.AudioDevice = _dereq_('./device');
|
||
|
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exports.Asset = _dereq_('./asset');
|
||
|
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||
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exports.Player = _dereq_('./player');
|
||
|
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exports.Filter = _dereq_('./filter');
|
||
|
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||
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exports.VolumeFilter = _dereq_('./filters/volume');
|
||
|
|
||
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exports.BalanceFilter = _dereq_('./filters/balance');
|
||
|
|
||
|
|
||
|
},{"./asset":2,"./core/base":5,"./core/bitstream":6,"./core/buffer":7,"./core/bufferlist":8,"./core/events":9,"./core/stream":10,"./core/underflow":11,"./decoder":12,"./demuxer":15,"./device":21,"./filter":25,"./filters/balance":26,"./filters/volume":27,"./player":28,"./sources/buffer":32,"./sources/node/file":30,"./sources/node/http":31}],5:[function(_dereq_,module,exports){
|
||
|
var Base,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
|
||
|
__indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
|
||
|
|
||
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Base = (function() {
|
||
|
var fnTest;
|
||
|
|
||
|
function Base() {}
|
||
|
|
||
|
fnTest = /\b_super\b/;
|
||
|
|
||
|
Base.extend = function(prop) {
|
||
|
var Class, fn, key, keys, _ref, _super;
|
||
|
Class = (function(_super) {
|
||
|
__extends(Class, _super);
|
||
|
|
||
|
function Class() {
|
||
|
return Class.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
return Class;
|
||
|
|
||
|
})(this);
|
||
|
if (typeof prop === 'function') {
|
||
|
keys = Object.keys(Class.prototype);
|
||
|
prop.call(Class, Class);
|
||
|
prop = {};
|
||
|
_ref = Class.prototype;
|
||
|
for (key in _ref) {
|
||
|
fn = _ref[key];
|
||
|
if (__indexOf.call(keys, key) < 0) {
|
||
|
prop[key] = fn;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
_super = Class.__super__;
|
||
|
for (key in prop) {
|
||
|
fn = prop[key];
|
||
|
if (typeof fn === 'function' && fnTest.test(fn)) {
|
||
|
(function(key, fn) {
|
||
|
return Class.prototype[key] = function() {
|
||
|
var ret, tmp;
|
||
|
tmp = this._super;
|
||
|
this._super = _super[key];
|
||
|
ret = fn.apply(this, arguments);
|
||
|
this._super = tmp;
|
||
|
return ret;
|
||
|
};
|
||
|
})(key, fn);
|
||
|
} else {
|
||
|
Class.prototype[key] = fn;
|
||
|
}
|
||
|
}
|
||
|
return Class;
|
||
|
};
|
||
|
|
||
|
return Base;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = Base;
|
||
|
|
||
|
|
||
|
},{}],6:[function(_dereq_,module,exports){
|
||
|
var Bitstream;
|
||
|
|
||
|
Bitstream = (function() {
|
||
|
function Bitstream(stream) {
|
||
|
this.stream = stream;
|
||
|
this.bitPosition = 0;
|
||
|
}
|
||
|
|
||
|
Bitstream.prototype.copy = function() {
|
||
|
var result;
|
||
|
result = new Bitstream(this.stream.copy());
|
||
|
result.bitPosition = this.bitPosition;
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.offset = function() {
|
||
|
return 8 * this.stream.offset + this.bitPosition;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.available = function(bits) {
|
||
|
return this.stream.available((bits + 8 - this.bitPosition) / 8);
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.advance = function(bits) {
|
||
|
var pos;
|
||
|
pos = this.bitPosition + bits;
|
||
|
this.stream.advance(pos >> 3);
|
||
|
return this.bitPosition = pos & 7;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.rewind = function(bits) {
|
||
|
var pos;
|
||
|
pos = this.bitPosition - bits;
|
||
|
this.stream.rewind(Math.abs(pos >> 3));
|
||
|
return this.bitPosition = pos & 7;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.seek = function(offset) {
|
||
|
var curOffset;
|
||
|
curOffset = this.offset();
|
||
|
if (offset > curOffset) {
|
||
|
return this.advance(offset - curOffset);
|
||
|
} else if (offset < curOffset) {
|
||
|
return this.rewind(curOffset - offset);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.align = function() {
|
||
|
if (this.bitPosition !== 0) {
|
||
|
this.bitPosition = 0;
|
||
|
return this.stream.advance(1);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.read = function(bits, signed) {
|
||
|
var a, a0, a1, a2, a3, a4, mBits;
|
||
|
if (bits === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
mBits = bits + this.bitPosition;
|
||
|
if (mBits <= 8) {
|
||
|
a = ((this.stream.peekUInt8() << this.bitPosition) & 0xff) >>> (8 - bits);
|
||
|
} else if (mBits <= 16) {
|
||
|
a = ((this.stream.peekUInt16() << this.bitPosition) & 0xffff) >>> (16 - bits);
|
||
|
} else if (mBits <= 24) {
|
||
|
a = ((this.stream.peekUInt24() << this.bitPosition) & 0xffffff) >>> (24 - bits);
|
||
|
} else if (mBits <= 32) {
|
||
|
a = (this.stream.peekUInt32() << this.bitPosition) >>> (32 - bits);
|
||
|
} else if (mBits <= 40) {
|
||
|
a0 = this.stream.peekUInt8(0) * 0x0100000000;
|
||
|
a1 = this.stream.peekUInt8(1) << 24 >>> 0;
|
||
|
a2 = this.stream.peekUInt8(2) << 16;
|
||
|
a3 = this.stream.peekUInt8(3) << 8;
|
||
|
a4 = this.stream.peekUInt8(4);
|
||
|
a = a0 + a1 + a2 + a3 + a4;
|
||
|
a %= Math.pow(2, 40 - this.bitPosition);
|
||
|
a = Math.floor(a / Math.pow(2, 40 - this.bitPosition - bits));
|
||
|
} else {
|
||
|
throw new Error("Too many bits!");
|
||
|
}
|
||
|
if (signed) {
|
||
|
if (mBits < 32) {
|
||
|
if (a >>> (bits - 1)) {
|
||
|
a = ((1 << bits >>> 0) - a) * -1;
|
||
|
}
|
||
|
} else {
|
||
|
if (a / Math.pow(2, bits - 1) | 0) {
|
||
|
a = (Math.pow(2, bits) - a) * -1;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
this.advance(bits);
|
||
|
return a;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.peek = function(bits, signed) {
|
||
|
var a, a0, a1, a2, a3, a4, mBits;
|
||
|
if (bits === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
mBits = bits + this.bitPosition;
|
||
|
if (mBits <= 8) {
|
||
|
a = ((this.stream.peekUInt8() << this.bitPosition) & 0xff) >>> (8 - bits);
|
||
|
} else if (mBits <= 16) {
|
||
|
a = ((this.stream.peekUInt16() << this.bitPosition) & 0xffff) >>> (16 - bits);
|
||
|
} else if (mBits <= 24) {
|
||
|
a = ((this.stream.peekUInt24() << this.bitPosition) & 0xffffff) >>> (24 - bits);
|
||
|
} else if (mBits <= 32) {
|
||
|
a = (this.stream.peekUInt32() << this.bitPosition) >>> (32 - bits);
|
||
|
} else if (mBits <= 40) {
|
||
|
a0 = this.stream.peekUInt8(0) * 0x0100000000;
|
||
|
a1 = this.stream.peekUInt8(1) << 24 >>> 0;
|
||
|
a2 = this.stream.peekUInt8(2) << 16;
|
||
|
a3 = this.stream.peekUInt8(3) << 8;
|
||
|
a4 = this.stream.peekUInt8(4);
|
||
|
a = a0 + a1 + a2 + a3 + a4;
|
||
|
a %= Math.pow(2, 40 - this.bitPosition);
|
||
|
a = Math.floor(a / Math.pow(2, 40 - this.bitPosition - bits));
|
||
|
} else {
|
||
|
throw new Error("Too many bits!");
|
||
|
}
|
||
|
if (signed) {
|
||
|
if (mBits < 32) {
|
||
|
if (a >>> (bits - 1)) {
|
||
|
a = ((1 << bits >>> 0) - a) * -1;
|
||
|
}
|
||
|
} else {
|
||
|
if (a / Math.pow(2, bits - 1) | 0) {
|
||
|
a = (Math.pow(2, bits) - a) * -1;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return a;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.readLSB = function(bits, signed) {
|
||
|
var a, mBits;
|
||
|
if (bits === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
if (bits > 40) {
|
||
|
throw new Error("Too many bits!");
|
||
|
}
|
||
|
mBits = bits + this.bitPosition;
|
||
|
a = (this.stream.peekUInt8(0)) >>> this.bitPosition;
|
||
|
if (mBits > 8) {
|
||
|
a |= (this.stream.peekUInt8(1)) << (8 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits > 16) {
|
||
|
a |= (this.stream.peekUInt8(2)) << (16 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits > 24) {
|
||
|
a += (this.stream.peekUInt8(3)) << (24 - this.bitPosition) >>> 0;
|
||
|
}
|
||
|
if (mBits > 32) {
|
||
|
a += (this.stream.peekUInt8(4)) * Math.pow(2, 32 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits >= 32) {
|
||
|
a %= Math.pow(2, bits);
|
||
|
} else {
|
||
|
a &= (1 << bits) - 1;
|
||
|
}
|
||
|
if (signed) {
|
||
|
if (mBits < 32) {
|
||
|
if (a >>> (bits - 1)) {
|
||
|
a = ((1 << bits >>> 0) - a) * -1;
|
||
|
}
|
||
|
} else {
|
||
|
if (a / Math.pow(2, bits - 1) | 0) {
|
||
|
a = (Math.pow(2, bits) - a) * -1;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
this.advance(bits);
|
||
|
return a;
|
||
|
};
|
||
|
|
||
|
Bitstream.prototype.peekLSB = function(bits, signed) {
|
||
|
var a, mBits;
|
||
|
if (bits === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
if (bits > 40) {
|
||
|
throw new Error("Too many bits!");
|
||
|
}
|
||
|
mBits = bits + this.bitPosition;
|
||
|
a = (this.stream.peekUInt8(0)) >>> this.bitPosition;
|
||
|
if (mBits > 8) {
|
||
|
a |= (this.stream.peekUInt8(1)) << (8 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits > 16) {
|
||
|
a |= (this.stream.peekUInt8(2)) << (16 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits > 24) {
|
||
|
a += (this.stream.peekUInt8(3)) << (24 - this.bitPosition) >>> 0;
|
||
|
}
|
||
|
if (mBits > 32) {
|
||
|
a += (this.stream.peekUInt8(4)) * Math.pow(2, 32 - this.bitPosition);
|
||
|
}
|
||
|
if (mBits >= 32) {
|
||
|
a %= Math.pow(2, bits);
|
||
|
} else {
|
||
|
a &= (1 << bits) - 1;
|
||
|
}
|
||
|
if (signed) {
|
||
|
if (mBits < 32) {
|
||
|
if (a >>> (bits - 1)) {
|
||
|
a = ((1 << bits >>> 0) - a) * -1;
|
||
|
}
|
||
|
} else {
|
||
|
if (a / Math.pow(2, bits - 1) | 0) {
|
||
|
a = (Math.pow(2, bits) - a) * -1;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return a;
|
||
|
};
|
||
|
|
||
|
return Bitstream;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = Bitstream;
|
||
|
|
||
|
|
||
|
},{}],7:[function(_dereq_,module,exports){
|
||
|
(function (global){
|
||
|
var AVBuffer;
|
||
|
|
||
|
AVBuffer = (function() {
|
||
|
var BlobBuilder, URL;
|
||
|
|
||
|
function AVBuffer(input) {
|
||
|
var _ref;
|
||
|
if (input instanceof Uint8Array) {
|
||
|
this.data = input;
|
||
|
} else if (input instanceof ArrayBuffer || Array.isArray(input) || typeof input === 'number' || ((_ref = global.Buffer) != null ? _ref.isBuffer(input) : void 0)) {
|
||
|
this.data = new Uint8Array(input);
|
||
|
} else if (input.buffer instanceof ArrayBuffer) {
|
||
|
this.data = new Uint8Array(input.buffer, input.byteOffset, input.length * input.BYTES_PER_ELEMENT);
|
||
|
} else if (input instanceof AVBuffer) {
|
||
|
this.data = input.data;
|
||
|
} else {
|
||
|
throw new Error("Constructing buffer with unknown type.");
|
||
|
}
|
||
|
this.length = this.data.length;
|
||
|
this.next = null;
|
||
|
this.prev = null;
|
||
|
}
|
||
|
|
||
|
AVBuffer.allocate = function(size) {
|
||
|
return new AVBuffer(size);
|
||
|
};
|
||
|
|
||
|
AVBuffer.prototype.copy = function() {
|
||
|
return new AVBuffer(new Uint8Array(this.data));
|
||
|
};
|
||
|
|
||
|
AVBuffer.prototype.slice = function(position, length) {
|
||
|
if (length == null) {
|
||
|
length = this.length;
|
||
|
}
|
||
|
if (position === 0 && length >= this.length) {
|
||
|
return new AVBuffer(this.data);
|
||
|
} else {
|
||
|
return new AVBuffer(this.data.subarray(position, position + length));
|
||
|
}
|
||
|
};
|
||
|
|
||
|
BlobBuilder = global.BlobBuilder || global.MozBlobBuilder || global.WebKitBlobBuilder;
|
||
|
|
||
|
URL = global.URL || global.webkitURL || global.mozURL;
|
||
|
|
||
|
AVBuffer.makeBlob = function(data, type) {
|
||
|
var bb;
|
||
|
if (type == null) {
|
||
|
type = 'application/octet-stream';
|
||
|
}
|
||
|
try {
|
||
|
return new Blob([data], {
|
||
|
type: type
|
||
|
});
|
||
|
} catch (_error) {}
|
||
|
if (BlobBuilder != null) {
|
||
|
bb = new BlobBuilder;
|
||
|
bb.append(data);
|
||
|
return bb.getBlob(type);
|
||
|
}
|
||
|
return null;
|
||
|
};
|
||
|
|
||
|
AVBuffer.makeBlobURL = function(data, type) {
|
||
|
return URL != null ? URL.createObjectURL(this.makeBlob(data, type)) : void 0;
|
||
|
};
|
||
|
|
||
|
AVBuffer.revokeBlobURL = function(url) {
|
||
|
return URL != null ? URL.revokeObjectURL(url) : void 0;
|
||
|
};
|
||
|
|
||
|
AVBuffer.prototype.toBlob = function() {
|
||
|
return AVBuffer.makeBlob(this.data.buffer);
|
||
|
};
|
||
|
|
||
|
AVBuffer.prototype.toBlobURL = function() {
|
||
|
return AVBuffer.makeBlobURL(this.data.buffer);
|
||
|
};
|
||
|
|
||
|
return AVBuffer;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = AVBuffer;
|
||
|
|
||
|
|
||
|
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
},{}],8:[function(_dereq_,module,exports){
|
||
|
var BufferList;
|
||
|
|
||
|
BufferList = (function() {
|
||
|
function BufferList() {
|
||
|
this.first = null;
|
||
|
this.last = null;
|
||
|
this.numBuffers = 0;
|
||
|
this.availableBytes = 0;
|
||
|
this.availableBuffers = 0;
|
||
|
}
|
||
|
|
||
|
BufferList.prototype.copy = function() {
|
||
|
var result;
|
||
|
result = new BufferList;
|
||
|
result.first = this.first;
|
||
|
result.last = this.last;
|
||
|
result.numBuffers = this.numBuffers;
|
||
|
result.availableBytes = this.availableBytes;
|
||
|
result.availableBuffers = this.availableBuffers;
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
BufferList.prototype.append = function(buffer) {
|
||
|
var _ref;
|
||
|
buffer.prev = this.last;
|
||
|
if ((_ref = this.last) != null) {
|
||
|
_ref.next = buffer;
|
||
|
}
|
||
|
this.last = buffer;
|
||
|
if (this.first == null) {
|
||
|
this.first = buffer;
|
||
|
}
|
||
|
this.availableBytes += buffer.length;
|
||
|
this.availableBuffers++;
|
||
|
return this.numBuffers++;
|
||
|
};
|
||
|
|
||
|
BufferList.prototype.advance = function() {
|
||
|
if (this.first) {
|
||
|
this.availableBytes -= this.first.length;
|
||
|
this.availableBuffers--;
|
||
|
this.first = this.first.next;
|
||
|
return this.first != null;
|
||
|
}
|
||
|
return false;
|
||
|
};
|
||
|
|
||
|
BufferList.prototype.rewind = function() {
|
||
|
var _ref;
|
||
|
if (this.first && !this.first.prev) {
|
||
|
return false;
|
||
|
}
|
||
|
this.first = ((_ref = this.first) != null ? _ref.prev : void 0) || this.last;
|
||
|
if (this.first) {
|
||
|
this.availableBytes += this.first.length;
|
||
|
this.availableBuffers++;
|
||
|
}
|
||
|
return this.first != null;
|
||
|
};
|
||
|
|
||
|
BufferList.prototype.reset = function() {
|
||
|
var _results;
|
||
|
_results = [];
|
||
|
while (this.rewind()) {
|
||
|
continue;
|
||
|
}
|
||
|
return _results;
|
||
|
};
|
||
|
|
||
|
return BufferList;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = BufferList;
|
||
|
|
||
|
|
||
|
},{}],9:[function(_dereq_,module,exports){
|
||
|
var Base, EventEmitter,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
|
||
|
__slice = [].slice;
|
||
|
|
||
|
Base = _dereq_('./base');
|
||
|
|
||
|
EventEmitter = (function(_super) {
|
||
|
__extends(EventEmitter, _super);
|
||
|
|
||
|
function EventEmitter() {
|
||
|
return EventEmitter.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
EventEmitter.prototype.on = function(event, fn) {
|
||
|
var _base;
|
||
|
if (this.events == null) {
|
||
|
this.events = {};
|
||
|
}
|
||
|
if ((_base = this.events)[event] == null) {
|
||
|
_base[event] = [];
|
||
|
}
|
||
|
return this.events[event].push(fn);
|
||
|
};
|
||
|
|
||
|
EventEmitter.prototype.off = function(event, fn) {
|
||
|
var index, _ref;
|
||
|
if (!((_ref = this.events) != null ? _ref[event] : void 0)) {
|
||
|
return;
|
||
|
}
|
||
|
index = this.events[event].indexOf(fn);
|
||
|
if (~index) {
|
||
|
return this.events[event].splice(index, 1);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
EventEmitter.prototype.once = function(event, fn) {
|
||
|
var cb;
|
||
|
return this.on(event, cb = function() {
|
||
|
this.off(event, cb);
|
||
|
return fn.apply(this, arguments);
|
||
|
});
|
||
|
};
|
||
|
|
||
|
EventEmitter.prototype.emit = function() {
|
||
|
var args, event, fn, _i, _len, _ref, _ref1;
|
||
|
event = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
|
||
|
if (!((_ref = this.events) != null ? _ref[event] : void 0)) {
|
||
|
return;
|
||
|
}
|
||
|
_ref1 = this.events[event].slice();
|
||
|
for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
|
||
|
fn = _ref1[_i];
|
||
|
fn.apply(this, args);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return EventEmitter;
|
||
|
|
||
|
})(Base);
|
||
|
|
||
|
module.exports = EventEmitter;
|
||
|
|
||
|
|
||
|
},{"./base":5}],10:[function(_dereq_,module,exports){
|
||
|
var AVBuffer, BufferList, Stream, UnderflowError;
|
||
|
|
||
|
BufferList = _dereq_('./bufferlist');
|
||
|
|
||
|
AVBuffer = _dereq_('./buffer');
|
||
|
|
||
|
UnderflowError = _dereq_('./underflow');
|
||
|
|
||
|
Stream = (function() {
|
||
|
var buf, decodeString, float32, float64, float64Fallback, float80, int16, int32, int8, nativeEndian, uint16, uint32, uint8;
|
||
|
|
||
|
buf = new ArrayBuffer(16);
|
||
|
|
||
|
uint8 = new Uint8Array(buf);
|
||
|
|
||
|
int8 = new Int8Array(buf);
|
||
|
|
||
|
uint16 = new Uint16Array(buf);
|
||
|
|
||
|
int16 = new Int16Array(buf);
|
||
|
|
||
|
uint32 = new Uint32Array(buf);
|
||
|
|
||
|
int32 = new Int32Array(buf);
|
||
|
|
||
|
float32 = new Float32Array(buf);
|
||
|
|
||
|
if (typeof Float64Array !== "undefined" && Float64Array !== null) {
|
||
|
float64 = new Float64Array(buf);
|
||
|
}
|
||
|
|
||
|
nativeEndian = new Uint16Array(new Uint8Array([0x12, 0x34]).buffer)[0] === 0x3412;
|
||
|
|
||
|
function Stream(list) {
|
||
|
this.list = list;
|
||
|
this.localOffset = 0;
|
||
|
this.offset = 0;
|
||
|
}
|
||
|
|
||
|
Stream.fromBuffer = function(buffer) {
|
||
|
var list;
|
||
|
list = new BufferList;
|
||
|
list.append(buffer);
|
||
|
return new Stream(list);
|
||
|
};
|
||
|
|
||
|
Stream.prototype.copy = function() {
|
||
|
var result;
|
||
|
result = new Stream(this.list.copy());
|
||
|
result.localOffset = this.localOffset;
|
||
|
result.offset = this.offset;
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.available = function(bytes) {
|
||
|
return bytes <= this.list.availableBytes - this.localOffset;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.remainingBytes = function() {
|
||
|
return this.list.availableBytes - this.localOffset;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.advance = function(bytes) {
|
||
|
if (!this.available(bytes)) {
|
||
|
throw new UnderflowError();
|
||
|
}
|
||
|
this.localOffset += bytes;
|
||
|
this.offset += bytes;
|
||
|
while (this.list.first && this.localOffset >= this.list.first.length) {
|
||
|
this.localOffset -= this.list.first.length;
|
||
|
this.list.advance();
|
||
|
}
|
||
|
return this;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.rewind = function(bytes) {
|
||
|
if (bytes > this.offset) {
|
||
|
throw new UnderflowError();
|
||
|
}
|
||
|
if (!this.list.first) {
|
||
|
this.list.rewind();
|
||
|
this.localOffset = this.list.first.length;
|
||
|
}
|
||
|
this.localOffset -= bytes;
|
||
|
this.offset -= bytes;
|
||
|
while (this.list.first.prev && this.localOffset < 0) {
|
||
|
this.list.rewind();
|
||
|
this.localOffset += this.list.first.length;
|
||
|
}
|
||
|
return this;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.seek = function(position) {
|
||
|
if (position > this.offset) {
|
||
|
return this.advance(position - this.offset);
|
||
|
} else if (position < this.offset) {
|
||
|
return this.rewind(this.offset - position);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readUInt8 = function() {
|
||
|
var a;
|
||
|
if (!this.available(1)) {
|
||
|
throw new UnderflowError();
|
||
|
}
|
||
|
a = this.list.first.data[this.localOffset];
|
||
|
this.localOffset += 1;
|
||
|
this.offset += 1;
|
||
|
if (this.localOffset === this.list.first.length) {
|
||
|
this.localOffset = 0;
|
||
|
this.list.advance();
|
||
|
}
|
||
|
return a;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekUInt8 = function(offset) {
|
||
|
var buffer;
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
if (!this.available(offset + 1)) {
|
||
|
throw new UnderflowError();
|
||
|
}
|
||
|
offset = this.localOffset + offset;
|
||
|
buffer = this.list.first;
|
||
|
while (buffer) {
|
||
|
if (buffer.length > offset) {
|
||
|
return buffer.data[offset];
|
||
|
}
|
||
|
offset -= buffer.length;
|
||
|
buffer = buffer.next;
|
||
|
}
|
||
|
return 0;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.read = function(bytes, littleEndian) {
|
||
|
var i, _i, _j, _ref;
|
||
|
if (littleEndian == null) {
|
||
|
littleEndian = false;
|
||
|
}
|
||
|
if (littleEndian === nativeEndian) {
|
||
|
for (i = _i = 0; _i < bytes; i = _i += 1) {
|
||
|
uint8[i] = this.readUInt8();
|
||
|
}
|
||
|
} else {
|
||
|
for (i = _j = _ref = bytes - 1; _j >= 0; i = _j += -1) {
|
||
|
uint8[i] = this.readUInt8();
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peek = function(bytes, offset, littleEndian) {
|
||
|
var i, _i, _j;
|
||
|
if (littleEndian == null) {
|
||
|
littleEndian = false;
|
||
|
}
|
||
|
if (littleEndian === nativeEndian) {
|
||
|
for (i = _i = 0; _i < bytes; i = _i += 1) {
|
||
|
uint8[i] = this.peekUInt8(offset + i);
|
||
|
}
|
||
|
} else {
|
||
|
for (i = _j = 0; _j < bytes; i = _j += 1) {
|
||
|
uint8[bytes - i - 1] = this.peekUInt8(offset + i);
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readInt8 = function() {
|
||
|
this.read(1);
|
||
|
return int8[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekInt8 = function(offset) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(1, offset);
|
||
|
return int8[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readUInt16 = function(littleEndian) {
|
||
|
this.read(2, littleEndian);
|
||
|
return uint16[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekUInt16 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(2, offset, littleEndian);
|
||
|
return uint16[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readInt16 = function(littleEndian) {
|
||
|
this.read(2, littleEndian);
|
||
|
return int16[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekInt16 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(2, offset, littleEndian);
|
||
|
return int16[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readUInt24 = function(littleEndian) {
|
||
|
if (littleEndian) {
|
||
|
return this.readUInt16(true) + (this.readUInt8() << 16);
|
||
|
} else {
|
||
|
return (this.readUInt16() << 8) + this.readUInt8();
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekUInt24 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
if (littleEndian) {
|
||
|
return this.peekUInt16(offset, true) + (this.peekUInt8(offset + 2) << 16);
|
||
|
} else {
|
||
|
return (this.peekUInt16(offset) << 8) + this.peekUInt8(offset + 2);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readInt24 = function(littleEndian) {
|
||
|
if (littleEndian) {
|
||
|
return this.readUInt16(true) + (this.readInt8() << 16);
|
||
|
} else {
|
||
|
return (this.readInt16() << 8) + this.readUInt8();
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekInt24 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
if (littleEndian) {
|
||
|
return this.peekUInt16(offset, true) + (this.peekInt8(offset + 2) << 16);
|
||
|
} else {
|
||
|
return (this.peekInt16(offset) << 8) + this.peekUInt8(offset + 2);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readUInt32 = function(littleEndian) {
|
||
|
this.read(4, littleEndian);
|
||
|
return uint32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekUInt32 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(4, offset, littleEndian);
|
||
|
return uint32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readInt32 = function(littleEndian) {
|
||
|
this.read(4, littleEndian);
|
||
|
return int32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekInt32 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(4, offset, littleEndian);
|
||
|
return int32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readFloat32 = function(littleEndian) {
|
||
|
this.read(4, littleEndian);
|
||
|
return float32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekFloat32 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(4, offset, littleEndian);
|
||
|
return float32[0];
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readFloat64 = function(littleEndian) {
|
||
|
this.read(8, littleEndian);
|
||
|
if (float64) {
|
||
|
return float64[0];
|
||
|
} else {
|
||
|
return float64Fallback();
|
||
|
}
|
||
|
};
|
||
|
|
||
|
float64Fallback = function() {
|
||
|
var exp, frac, high, low, out, sign;
|
||
|
low = uint32[0], high = uint32[1];
|
||
|
if (!high || high === 0x80000000) {
|
||
|
return 0.0;
|
||
|
}
|
||
|
sign = 1 - (high >>> 31) * 2;
|
||
|
exp = (high >>> 20) & 0x7ff;
|
||
|
frac = high & 0xfffff;
|
||
|
if (exp === 0x7ff) {
|
||
|
if (frac) {
|
||
|
return NaN;
|
||
|
}
|
||
|
return sign * Infinity;
|
||
|
}
|
||
|
exp -= 1023;
|
||
|
out = (frac | 0x100000) * Math.pow(2, exp - 20);
|
||
|
out += low * Math.pow(2, exp - 52);
|
||
|
return sign * out;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekFloat64 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(8, offset, littleEndian);
|
||
|
if (float64) {
|
||
|
return float64[0];
|
||
|
} else {
|
||
|
return float64Fallback();
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readFloat80 = function(littleEndian) {
|
||
|
this.read(10, littleEndian);
|
||
|
return float80();
|
||
|
};
|
||
|
|
||
|
float80 = function() {
|
||
|
var a0, a1, exp, high, low, out, sign;
|
||
|
high = uint32[0], low = uint32[1];
|
||
|
a0 = uint8[9];
|
||
|
a1 = uint8[8];
|
||
|
sign = 1 - (a0 >>> 7) * 2;
|
||
|
exp = ((a0 & 0x7F) << 8) | a1;
|
||
|
if (exp === 0 && low === 0 && high === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
if (exp === 0x7fff) {
|
||
|
if (low === 0 && high === 0) {
|
||
|
return sign * Infinity;
|
||
|
}
|
||
|
return NaN;
|
||
|
}
|
||
|
exp -= 16383;
|
||
|
out = low * Math.pow(2, exp - 31);
|
||
|
out += high * Math.pow(2, exp - 63);
|
||
|
return sign * out;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekFloat80 = function(offset, littleEndian) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
this.peek(10, offset, littleEndian);
|
||
|
return float80();
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readBuffer = function(length) {
|
||
|
var i, result, to, _i;
|
||
|
result = AVBuffer.allocate(length);
|
||
|
to = result.data;
|
||
|
for (i = _i = 0; _i < length; i = _i += 1) {
|
||
|
to[i] = this.readUInt8();
|
||
|
}
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekBuffer = function(offset, length) {
|
||
|
var i, result, to, _i;
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
result = AVBuffer.allocate(length);
|
||
|
to = result.data;
|
||
|
for (i = _i = 0; _i < length; i = _i += 1) {
|
||
|
to[i] = this.peekUInt8(offset + i);
|
||
|
}
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readSingleBuffer = function(length) {
|
||
|
var result;
|
||
|
result = this.list.first.slice(this.localOffset, length);
|
||
|
this.advance(result.length);
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekSingleBuffer = function(offset, length) {
|
||
|
var result;
|
||
|
result = this.list.first.slice(this.localOffset + offset, length);
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
Stream.prototype.readString = function(length, encoding) {
|
||
|
if (encoding == null) {
|
||
|
encoding = 'ascii';
|
||
|
}
|
||
|
return decodeString.call(this, 0, length, encoding, true);
|
||
|
};
|
||
|
|
||
|
Stream.prototype.peekString = function(offset, length, encoding) {
|
||
|
if (offset == null) {
|
||
|
offset = 0;
|
||
|
}
|
||
|
if (encoding == null) {
|
||
|
encoding = 'ascii';
|
||
|
}
|
||
|
return decodeString.call(this, offset, length, encoding, false);
|
||
|
};
|
||
|
|
||
|
decodeString = function(offset, length, encoding, advance) {
|
||
|
var b1, b2, b3, b4, bom, c, end, littleEndian, nullEnd, pt, result, w1, w2;
|
||
|
encoding = encoding.toLowerCase();
|
||
|
nullEnd = length === null ? 0 : -1;
|
||
|
if (length == null) {
|
||
|
length = Infinity;
|
||
|
}
|
||
|
end = offset + length;
|
||
|
result = '';
|
||
|
switch (encoding) {
|
||
|
case 'ascii':
|
||
|
case 'latin1':
|
||
|
while (offset < end && (c = this.peekUInt8(offset++)) !== nullEnd) {
|
||
|
result += String.fromCharCode(c);
|
||
|
}
|
||
|
break;
|
||
|
case 'utf8':
|
||
|
case 'utf-8':
|
||
|
while (offset < end && (b1 = this.peekUInt8(offset++)) !== nullEnd) {
|
||
|
if ((b1 & 0x80) === 0) {
|
||
|
result += String.fromCharCode(b1);
|
||
|
} else if ((b1 & 0xe0) === 0xc0) {
|
||
|
b2 = this.peekUInt8(offset++) & 0x3f;
|
||
|
result += String.fromCharCode(((b1 & 0x1f) << 6) | b2);
|
||
|
} else if ((b1 & 0xf0) === 0xe0) {
|
||
|
b2 = this.peekUInt8(offset++) & 0x3f;
|
||
|
b3 = this.peekUInt8(offset++) & 0x3f;
|
||
|
result += String.fromCharCode(((b1 & 0x0f) << 12) | (b2 << 6) | b3);
|
||
|
} else if ((b1 & 0xf8) === 0xf0) {
|
||
|
b2 = this.peekUInt8(offset++) & 0x3f;
|
||
|
b3 = this.peekUInt8(offset++) & 0x3f;
|
||
|
b4 = this.peekUInt8(offset++) & 0x3f;
|
||
|
pt = (((b1 & 0x0f) << 18) | (b2 << 12) | (b3 << 6) | b4) - 0x10000;
|
||
|
result += String.fromCharCode(0xd800 + (pt >> 10), 0xdc00 + (pt & 0x3ff));
|
||
|
}
|
||
|
}
|
||
|
break;
|
||
|
case 'utf16-be':
|
||
|
case 'utf16be':
|
||
|
case 'utf16le':
|
||
|
case 'utf16-le':
|
||
|
case 'utf16bom':
|
||
|
case 'utf16-bom':
|
||
|
switch (encoding) {
|
||
|
case 'utf16be':
|
||
|
case 'utf16-be':
|
||
|
littleEndian = false;
|
||
|
break;
|
||
|
case 'utf16le':
|
||
|
case 'utf16-le':
|
||
|
littleEndian = true;
|
||
|
break;
|
||
|
case 'utf16bom':
|
||
|
case 'utf16-bom':
|
||
|
if (length < 2 || (bom = this.peekUInt16(offset)) === nullEnd) {
|
||
|
if (advance) {
|
||
|
this.advance(offset += 2);
|
||
|
}
|
||
|
return result;
|
||
|
}
|
||
|
littleEndian = bom === 0xfffe;
|
||
|
offset += 2;
|
||
|
}
|
||
|
while (offset < end && (w1 = this.peekUInt16(offset, littleEndian)) !== nullEnd) {
|
||
|
offset += 2;
|
||
|
if (w1 < 0xd800 || w1 > 0xdfff) {
|
||
|
result += String.fromCharCode(w1);
|
||
|
} else {
|
||
|
if (w1 > 0xdbff) {
|
||
|
throw new Error("Invalid utf16 sequence.");
|
||
|
}
|
||
|
w2 = this.peekUInt16(offset, littleEndian);
|
||
|
if (w2 < 0xdc00 || w2 > 0xdfff) {
|
||
|
throw new Error("Invalid utf16 sequence.");
|
||
|
}
|
||
|
result += String.fromCharCode(w1, w2);
|
||
|
offset += 2;
|
||
|
}
|
||
|
}
|
||
|
if (w1 === nullEnd) {
|
||
|
offset += 2;
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
throw new Error("Unknown encoding: " + encoding);
|
||
|
}
|
||
|
if (advance) {
|
||
|
this.advance(offset);
|
||
|
}
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
return Stream;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = Stream;
|
||
|
|
||
|
|
||
|
},{"./buffer":7,"./bufferlist":8,"./underflow":11}],11:[function(_dereq_,module,exports){
|
||
|
var UnderflowError,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
UnderflowError = (function(_super) {
|
||
|
__extends(UnderflowError, _super);
|
||
|
|
||
|
function UnderflowError() {
|
||
|
UnderflowError.__super__.constructor.apply(this, arguments);
|
||
|
this.name = 'UnderflowError';
|
||
|
this.stack = new Error().stack;
|
||
|
}
|
||
|
|
||
|
return UnderflowError;
|
||
|
|
||
|
})(Error);
|
||
|
|
||
|
module.exports = UnderflowError;
|
||
|
|
||
|
|
||
|
},{}],12:[function(_dereq_,module,exports){
|
||
|
var Bitstream, BufferList, Decoder, EventEmitter, Stream, UnderflowError,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('./core/events');
|
||
|
|
||
|
BufferList = _dereq_('./core/bufferlist');
|
||
|
|
||
|
Stream = _dereq_('./core/stream');
|
||
|
|
||
|
Bitstream = _dereq_('./core/bitstream');
|
||
|
|
||
|
UnderflowError = _dereq_('./core/underflow');
|
||
|
|
||
|
Decoder = (function(_super) {
|
||
|
var codecs;
|
||
|
|
||
|
__extends(Decoder, _super);
|
||
|
|
||
|
function Decoder(demuxer, format) {
|
||
|
var list;
|
||
|
this.demuxer = demuxer;
|
||
|
this.format = format;
|
||
|
list = new BufferList;
|
||
|
this.stream = new Stream(list);
|
||
|
this.bitstream = new Bitstream(this.stream);
|
||
|
this.receivedFinalBuffer = false;
|
||
|
this.waiting = false;
|
||
|
this.demuxer.on('cookie', (function(_this) {
|
||
|
return function(cookie) {
|
||
|
var error;
|
||
|
try {
|
||
|
return _this.setCookie(cookie);
|
||
|
} catch (_error) {
|
||
|
error = _error;
|
||
|
return _this.emit('error', error);
|
||
|
}
|
||
|
};
|
||
|
})(this));
|
||
|
this.demuxer.on('data', (function(_this) {
|
||
|
return function(chunk) {
|
||
|
list.append(chunk);
|
||
|
if (_this.waiting) {
|
||
|
return _this.decode();
|
||
|
}
|
||
|
};
|
||
|
})(this));
|
||
|
this.demuxer.on('end', (function(_this) {
|
||
|
return function() {
|
||
|
_this.receivedFinalBuffer = true;
|
||
|
if (_this.waiting) {
|
||
|
return _this.decode();
|
||
|
}
|
||
|
};
|
||
|
})(this));
|
||
|
this.init();
|
||
|
}
|
||
|
|
||
|
Decoder.prototype.init = function() {};
|
||
|
|
||
|
Decoder.prototype.setCookie = function(cookie) {};
|
||
|
|
||
|
Decoder.prototype.readChunk = function() {};
|
||
|
|
||
|
Decoder.prototype.decode = function() {
|
||
|
var error, offset, packet;
|
||
|
this.waiting = false;
|
||
|
offset = this.bitstream.offset();
|
||
|
try {
|
||
|
packet = this.readChunk();
|
||
|
} catch (_error) {
|
||
|
error = _error;
|
||
|
if (!(error instanceof UnderflowError)) {
|
||
|
this.emit('error', error);
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
if (packet) {
|
||
|
this.emit('data', packet);
|
||
|
return true;
|
||
|
} else if (!this.receivedFinalBuffer) {
|
||
|
this.bitstream.seek(offset);
|
||
|
this.waiting = true;
|
||
|
} else {
|
||
|
this.emit('end');
|
||
|
}
|
||
|
return false;
|
||
|
};
|
||
|
|
||
|
Decoder.prototype.seek = function(timestamp) {
|
||
|
var seekPoint;
|
||
|
seekPoint = this.demuxer.seek(timestamp);
|
||
|
this.stream.seek(seekPoint.offset);
|
||
|
return seekPoint.timestamp;
|
||
|
};
|
||
|
|
||
|
codecs = {};
|
||
|
|
||
|
Decoder.register = function(id, decoder) {
|
||
|
return codecs[id] = decoder;
|
||
|
};
|
||
|
|
||
|
Decoder.find = function(id) {
|
||
|
return codecs[id] || null;
|
||
|
};
|
||
|
|
||
|
return Decoder;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = Decoder;
|
||
|
|
||
|
|
||
|
},{"./core/bitstream":6,"./core/bufferlist":8,"./core/events":9,"./core/stream":10,"./core/underflow":11}],13:[function(_dereq_,module,exports){
|
||
|
var Decoder, LPCMDecoder,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Decoder = _dereq_('../decoder');
|
||
|
|
||
|
LPCMDecoder = (function(_super) {
|
||
|
__extends(LPCMDecoder, _super);
|
||
|
|
||
|
function LPCMDecoder() {
|
||
|
this.readChunk = __bind(this.readChunk, this);
|
||
|
return LPCMDecoder.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Decoder.register('lpcm', LPCMDecoder);
|
||
|
|
||
|
LPCMDecoder.prototype.readChunk = function() {
|
||
|
var chunkSize, i, littleEndian, output, samples, stream, _i, _j, _k, _l, _m, _n;
|
||
|
stream = this.stream;
|
||
|
littleEndian = this.format.littleEndian;
|
||
|
chunkSize = Math.min(4096, stream.remainingBytes());
|
||
|
samples = chunkSize / (this.format.bitsPerChannel / 8) | 0;
|
||
|
if (chunkSize < this.format.bitsPerChannel / 8) {
|
||
|
return null;
|
||
|
}
|
||
|
if (this.format.floatingPoint) {
|
||
|
switch (this.format.bitsPerChannel) {
|
||
|
case 32:
|
||
|
output = new Float32Array(samples);
|
||
|
for (i = _i = 0; _i < samples; i = _i += 1) {
|
||
|
output[i] = stream.readFloat32(littleEndian);
|
||
|
}
|
||
|
break;
|
||
|
case 64:
|
||
|
output = new Float64Array(samples);
|
||
|
for (i = _j = 0; _j < samples; i = _j += 1) {
|
||
|
output[i] = stream.readFloat64(littleEndian);
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
throw new Error('Unsupported bit depth.');
|
||
|
}
|
||
|
} else {
|
||
|
switch (this.format.bitsPerChannel) {
|
||
|
case 8:
|
||
|
output = new Int8Array(samples);
|
||
|
for (i = _k = 0; _k < samples; i = _k += 1) {
|
||
|
output[i] = stream.readInt8();
|
||
|
}
|
||
|
break;
|
||
|
case 16:
|
||
|
output = new Int16Array(samples);
|
||
|
for (i = _l = 0; _l < samples; i = _l += 1) {
|
||
|
output[i] = stream.readInt16(littleEndian);
|
||
|
}
|
||
|
break;
|
||
|
case 24:
|
||
|
output = new Int32Array(samples);
|
||
|
for (i = _m = 0; _m < samples; i = _m += 1) {
|
||
|
output[i] = stream.readInt24(littleEndian);
|
||
|
}
|
||
|
break;
|
||
|
case 32:
|
||
|
output = new Int32Array(samples);
|
||
|
for (i = _n = 0; _n < samples; i = _n += 1) {
|
||
|
output[i] = stream.readInt32(littleEndian);
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
throw new Error('Unsupported bit depth.');
|
||
|
}
|
||
|
}
|
||
|
return output;
|
||
|
};
|
||
|
|
||
|
return LPCMDecoder;
|
||
|
|
||
|
})(Decoder);
|
||
|
|
||
|
|
||
|
},{"../decoder":12}],14:[function(_dereq_,module,exports){
|
||
|
var Decoder, XLAWDecoder,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Decoder = _dereq_('../decoder');
|
||
|
|
||
|
XLAWDecoder = (function(_super) {
|
||
|
var BIAS, QUANT_MASK, SEG_MASK, SEG_SHIFT, SIGN_BIT;
|
||
|
|
||
|
__extends(XLAWDecoder, _super);
|
||
|
|
||
|
function XLAWDecoder() {
|
||
|
this.readChunk = __bind(this.readChunk, this);
|
||
|
return XLAWDecoder.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Decoder.register('ulaw', XLAWDecoder);
|
||
|
|
||
|
Decoder.register('alaw', XLAWDecoder);
|
||
|
|
||
|
SIGN_BIT = 0x80;
|
||
|
|
||
|
QUANT_MASK = 0xf;
|
||
|
|
||
|
SEG_SHIFT = 4;
|
||
|
|
||
|
SEG_MASK = 0x70;
|
||
|
|
||
|
BIAS = 0x84;
|
||
|
|
||
|
XLAWDecoder.prototype.init = function() {
|
||
|
var i, seg, t, table, val, _i, _j;
|
||
|
this.format.bitsPerChannel = 16;
|
||
|
this.table = table = new Int16Array(256);
|
||
|
if (this.format.formatID === 'ulaw') {
|
||
|
for (i = _i = 0; _i < 256; i = ++_i) {
|
||
|
val = ~i;
|
||
|
t = ((val & QUANT_MASK) << 3) + BIAS;
|
||
|
t <<= (val & SEG_MASK) >>> SEG_SHIFT;
|
||
|
table[i] = val & SIGN_BIT ? BIAS - t : t - BIAS;
|
||
|
}
|
||
|
} else {
|
||
|
for (i = _j = 0; _j < 256; i = ++_j) {
|
||
|
val = i ^ 0x55;
|
||
|
t = val & QUANT_MASK;
|
||
|
seg = (val & SEG_MASK) >>> SEG_SHIFT;
|
||
|
if (seg) {
|
||
|
t = (t + t + 1 + 32) << (seg + 2);
|
||
|
} else {
|
||
|
t = (t + t + 1) << 3;
|
||
|
}
|
||
|
table[i] = val & SIGN_BIT ? t : -t;
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
XLAWDecoder.prototype.readChunk = function() {
|
||
|
var i, output, samples, stream, table, _i;
|
||
|
stream = this.stream, table = this.table;
|
||
|
samples = Math.min(4096, this.stream.remainingBytes());
|
||
|
if (samples === 0) {
|
||
|
return;
|
||
|
}
|
||
|
output = new Int16Array(samples);
|
||
|
for (i = _i = 0; _i < samples; i = _i += 1) {
|
||
|
output[i] = table[stream.readUInt8()];
|
||
|
}
|
||
|
return output;
|
||
|
};
|
||
|
|
||
|
return XLAWDecoder;
|
||
|
|
||
|
})(Decoder);
|
||
|
|
||
|
|
||
|
},{"../decoder":12}],15:[function(_dereq_,module,exports){
|
||
|
var BufferList, Demuxer, EventEmitter, Stream,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('./core/events');
|
||
|
|
||
|
BufferList = _dereq_('./core/bufferlist');
|
||
|
|
||
|
Stream = _dereq_('./core/stream');
|
||
|
|
||
|
Demuxer = (function(_super) {
|
||
|
var formats;
|
||
|
|
||
|
__extends(Demuxer, _super);
|
||
|
|
||
|
Demuxer.probe = function(buffer) {
|
||
|
return false;
|
||
|
};
|
||
|
|
||
|
function Demuxer(source, chunk) {
|
||
|
var list, received;
|
||
|
list = new BufferList;
|
||
|
list.append(chunk);
|
||
|
this.stream = new Stream(list);
|
||
|
received = false;
|
||
|
source.on('data', (function(_this) {
|
||
|
return function(chunk) {
|
||
|
received = true;
|
||
|
list.append(chunk);
|
||
|
return _this.readChunk(chunk);
|
||
|
};
|
||
|
})(this));
|
||
|
source.on('error', (function(_this) {
|
||
|
return function(err) {
|
||
|
return _this.emit('error', err);
|
||
|
};
|
||
|
})(this));
|
||
|
source.on('end', (function(_this) {
|
||
|
return function() {
|
||
|
if (!received) {
|
||
|
_this.readChunk(chunk);
|
||
|
}
|
||
|
return _this.emit('end');
|
||
|
};
|
||
|
})(this));
|
||
|
this.seekPoints = [];
|
||
|
this.init();
|
||
|
}
|
||
|
|
||
|
Demuxer.prototype.init = function() {};
|
||
|
|
||
|
Demuxer.prototype.readChunk = function(chunk) {};
|
||
|
|
||
|
Demuxer.prototype.addSeekPoint = function(offset, timestamp) {
|
||
|
var index;
|
||
|
index = this.searchTimestamp(timestamp);
|
||
|
return this.seekPoints.splice(index, 0, {
|
||
|
offset: offset,
|
||
|
timestamp: timestamp
|
||
|
});
|
||
|
};
|
||
|
|
||
|
Demuxer.prototype.searchTimestamp = function(timestamp, backward) {
|
||
|
var high, low, mid, time;
|
||
|
low = 0;
|
||
|
high = this.seekPoints.length;
|
||
|
if (high > 0 && this.seekPoints[high - 1].timestamp < timestamp) {
|
||
|
return high;
|
||
|
}
|
||
|
while (low < high) {
|
||
|
mid = (low + high) >> 1;
|
||
|
time = this.seekPoints[mid].timestamp;
|
||
|
if (time < timestamp) {
|
||
|
low = mid + 1;
|
||
|
} else if (time >= timestamp) {
|
||
|
high = mid;
|
||
|
}
|
||
|
}
|
||
|
if (high > this.seekPoints.length) {
|
||
|
high = this.seekPoints.length;
|
||
|
}
|
||
|
return high;
|
||
|
};
|
||
|
|
||
|
Demuxer.prototype.seek = function(timestamp) {
|
||
|
var index, seekPoint;
|
||
|
if (this.format && this.format.framesPerPacket > 0 && this.format.bytesPerPacket > 0) {
|
||
|
seekPoint = {
|
||
|
timestamp: timestamp,
|
||
|
offset: this.format.bytesPerPacket * timestamp / this.format.framesPerPacket
|
||
|
};
|
||
|
return seekPoint;
|
||
|
} else {
|
||
|
index = this.searchTimestamp(timestamp);
|
||
|
return this.seekPoints[index];
|
||
|
}
|
||
|
};
|
||
|
|
||
|
formats = [];
|
||
|
|
||
|
Demuxer.register = function(demuxer) {
|
||
|
return formats.push(demuxer);
|
||
|
};
|
||
|
|
||
|
Demuxer.find = function(buffer) {
|
||
|
var e, format, offset, stream, _i, _len;
|
||
|
stream = Stream.fromBuffer(buffer);
|
||
|
for (_i = 0, _len = formats.length; _i < _len; _i++) {
|
||
|
format = formats[_i];
|
||
|
offset = stream.offset;
|
||
|
try {
|
||
|
if (format.probe(stream)) {
|
||
|
return format;
|
||
|
}
|
||
|
} catch (_error) {
|
||
|
e = _error;
|
||
|
}
|
||
|
stream.seek(offset);
|
||
|
}
|
||
|
return null;
|
||
|
};
|
||
|
|
||
|
return Demuxer;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = Demuxer;
|
||
|
|
||
|
|
||
|
},{"./core/bufferlist":8,"./core/events":9,"./core/stream":10}],16:[function(_dereq_,module,exports){
|
||
|
var AIFFDemuxer, Demuxer,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Demuxer = _dereq_('../demuxer');
|
||
|
|
||
|
AIFFDemuxer = (function(_super) {
|
||
|
__extends(AIFFDemuxer, _super);
|
||
|
|
||
|
function AIFFDemuxer() {
|
||
|
return AIFFDemuxer.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Demuxer.register(AIFFDemuxer);
|
||
|
|
||
|
AIFFDemuxer.probe = function(buffer) {
|
||
|
var _ref;
|
||
|
return buffer.peekString(0, 4) === 'FORM' && ((_ref = buffer.peekString(8, 4)) === 'AIFF' || _ref === 'AIFC');
|
||
|
};
|
||
|
|
||
|
AIFFDemuxer.prototype.readChunk = function() {
|
||
|
var buffer, format, offset, _ref;
|
||
|
if (!this.readStart && this.stream.available(12)) {
|
||
|
if (this.stream.readString(4) !== 'FORM') {
|
||
|
return this.emit('error', 'Invalid AIFF.');
|
||
|
}
|
||
|
this.fileSize = this.stream.readUInt32();
|
||
|
this.fileType = this.stream.readString(4);
|
||
|
this.readStart = true;
|
||
|
if ((_ref = this.fileType) !== 'AIFF' && _ref !== 'AIFC') {
|
||
|
return this.emit('error', 'Invalid AIFF.');
|
||
|
}
|
||
|
}
|
||
|
while (this.stream.available(1)) {
|
||
|
if (!this.readHeaders && this.stream.available(8)) {
|
||
|
this.type = this.stream.readString(4);
|
||
|
this.len = this.stream.readUInt32();
|
||
|
}
|
||
|
switch (this.type) {
|
||
|
case 'COMM':
|
||
|
if (!this.stream.available(this.len)) {
|
||
|
return;
|
||
|
}
|
||
|
this.format = {
|
||
|
formatID: 'lpcm',
|
||
|
channelsPerFrame: this.stream.readUInt16(),
|
||
|
sampleCount: this.stream.readUInt32(),
|
||
|
bitsPerChannel: this.stream.readUInt16(),
|
||
|
sampleRate: this.stream.readFloat80(),
|
||
|
framesPerPacket: 1,
|
||
|
littleEndian: false,
|
||
|
floatingPoint: false
|
||
|
};
|
||
|
this.format.bytesPerPacket = (this.format.bitsPerChannel / 8) * this.format.channelsPerFrame;
|
||
|
if (this.fileType === 'AIFC') {
|
||
|
format = this.stream.readString(4);
|
||
|
this.format.littleEndian = format === 'sowt' && this.format.bitsPerChannel > 8;
|
||
|
this.format.floatingPoint = format === 'fl32' || format === 'fl64';
|
||
|
if (format === 'twos' || format === 'sowt' || format === 'fl32' || format === 'fl64' || format === 'NONE') {
|
||
|
format = 'lpcm';
|
||
|
}
|
||
|
this.format.formatID = format;
|
||
|
this.len -= 4;
|
||
|
}
|
||
|
this.stream.advance(this.len - 18);
|
||
|
this.emit('format', this.format);
|
||
|
this.emit('duration', this.format.sampleCount / this.format.sampleRate * 1000 | 0);
|
||
|
break;
|
||
|
case 'SSND':
|
||
|
if (!(this.readSSNDHeader && this.stream.available(4))) {
|
||
|
offset = this.stream.readUInt32();
|
||
|
this.stream.advance(4);
|
||
|
this.stream.advance(offset);
|
||
|
this.readSSNDHeader = true;
|
||
|
}
|
||
|
buffer = this.stream.readSingleBuffer(this.len);
|
||
|
this.len -= buffer.length;
|
||
|
this.readHeaders = this.len > 0;
|
||
|
this.emit('data', buffer);
|
||
|
break;
|
||
|
default:
|
||
|
if (!this.stream.available(this.len)) {
|
||
|
return;
|
||
|
}
|
||
|
this.stream.advance(this.len);
|
||
|
}
|
||
|
if (this.type !== 'SSND') {
|
||
|
this.readHeaders = false;
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return AIFFDemuxer;
|
||
|
|
||
|
})(Demuxer);
|
||
|
|
||
|
|
||
|
},{"../demuxer":15}],17:[function(_dereq_,module,exports){
|
||
|
var AUDemuxer, Demuxer,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Demuxer = _dereq_('../demuxer');
|
||
|
|
||
|
AUDemuxer = (function(_super) {
|
||
|
var bps, formats;
|
||
|
|
||
|
__extends(AUDemuxer, _super);
|
||
|
|
||
|
function AUDemuxer() {
|
||
|
return AUDemuxer.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Demuxer.register(AUDemuxer);
|
||
|
|
||
|
AUDemuxer.probe = function(buffer) {
|
||
|
return buffer.peekString(0, 4) === '.snd';
|
||
|
};
|
||
|
|
||
|
bps = [8, 8, 16, 24, 32, 32, 64];
|
||
|
|
||
|
bps[26] = 8;
|
||
|
|
||
|
formats = {
|
||
|
1: 'ulaw',
|
||
|
27: 'alaw'
|
||
|
};
|
||
|
|
||
|
AUDemuxer.prototype.readChunk = function() {
|
||
|
var bytes, dataSize, encoding, size;
|
||
|
if (!this.readHeader && this.stream.available(24)) {
|
||
|
if (this.stream.readString(4) !== '.snd') {
|
||
|
return this.emit('error', 'Invalid AU file.');
|
||
|
}
|
||
|
size = this.stream.readUInt32();
|
||
|
dataSize = this.stream.readUInt32();
|
||
|
encoding = this.stream.readUInt32();
|
||
|
this.format = {
|
||
|
formatID: formats[encoding] || 'lpcm',
|
||
|
littleEndian: false,
|
||
|
floatingPoint: encoding === 6 || encoding === 7,
|
||
|
bitsPerChannel: bps[encoding - 1],
|
||
|
sampleRate: this.stream.readUInt32(),
|
||
|
channelsPerFrame: this.stream.readUInt32(),
|
||
|
framesPerPacket: 1
|
||
|
};
|
||
|
if (this.format.bitsPerChannel == null) {
|
||
|
return this.emit('error', 'Unsupported encoding in AU file.');
|
||
|
}
|
||
|
this.format.bytesPerPacket = (this.format.bitsPerChannel / 8) * this.format.channelsPerFrame;
|
||
|
if (dataSize !== 0xffffffff) {
|
||
|
bytes = this.format.bitsPerChannel / 8;
|
||
|
this.emit('duration', dataSize / bytes / this.format.channelsPerFrame / this.format.sampleRate * 1000 | 0);
|
||
|
}
|
||
|
this.emit('format', this.format);
|
||
|
this.readHeader = true;
|
||
|
}
|
||
|
if (this.readHeader) {
|
||
|
while (this.stream.available(1)) {
|
||
|
this.emit('data', this.stream.readSingleBuffer(this.stream.remainingBytes()));
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return AUDemuxer;
|
||
|
|
||
|
})(Demuxer);
|
||
|
|
||
|
|
||
|
},{"../demuxer":15}],18:[function(_dereq_,module,exports){
|
||
|
var CAFDemuxer, Demuxer, M4ADemuxer,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Demuxer = _dereq_('../demuxer');
|
||
|
|
||
|
M4ADemuxer = _dereq_('./m4a');
|
||
|
|
||
|
CAFDemuxer = (function(_super) {
|
||
|
__extends(CAFDemuxer, _super);
|
||
|
|
||
|
function CAFDemuxer() {
|
||
|
return CAFDemuxer.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Demuxer.register(CAFDemuxer);
|
||
|
|
||
|
CAFDemuxer.probe = function(buffer) {
|
||
|
return buffer.peekString(0, 4) === 'caff';
|
||
|
};
|
||
|
|
||
|
CAFDemuxer.prototype.readChunk = function() {
|
||
|
var buffer, byteOffset, cookie, entries, flags, i, key, metadata, offset, sampleOffset, value, _i, _j, _ref;
|
||
|
if (!this.format && this.stream.available(64)) {
|
||
|
if (this.stream.readString(4) !== 'caff') {
|
||
|
return this.emit('error', "Invalid CAF, does not begin with 'caff'");
|
||
|
}
|
||
|
this.stream.advance(4);
|
||
|
if (this.stream.readString(4) !== 'desc') {
|
||
|
return this.emit('error', "Invalid CAF, 'caff' is not followed by 'desc'");
|
||
|
}
|
||
|
if (!(this.stream.readUInt32() === 0 && this.stream.readUInt32() === 32)) {
|
||
|
return this.emit('error', "Invalid 'desc' size, should be 32");
|
||
|
}
|
||
|
this.format = {};
|
||
|
this.format.sampleRate = this.stream.readFloat64();
|
||
|
this.format.formatID = this.stream.readString(4);
|
||
|
flags = this.stream.readUInt32();
|
||
|
if (this.format.formatID === 'lpcm') {
|
||
|
this.format.floatingPoint = Boolean(flags & 1);
|
||
|
this.format.littleEndian = Boolean(flags & 2);
|
||
|
}
|
||
|
this.format.bytesPerPacket = this.stream.readUInt32();
|
||
|
this.format.framesPerPacket = this.stream.readUInt32();
|
||
|
this.format.channelsPerFrame = this.stream.readUInt32();
|
||
|
this.format.bitsPerChannel = this.stream.readUInt32();
|
||
|
this.emit('format', this.format);
|
||
|
}
|
||
|
while (this.stream.available(1)) {
|
||
|
if (!this.headerCache) {
|
||
|
this.headerCache = {
|
||
|
type: this.stream.readString(4),
|
||
|
oversize: this.stream.readUInt32() !== 0,
|
||
|
size: this.stream.readUInt32()
|
||
|
};
|
||
|
if (this.headerCache.oversize) {
|
||
|
return this.emit('error', "Holy Shit, an oversized file, not supported in JS");
|
||
|
}
|
||
|
}
|
||
|
switch (this.headerCache.type) {
|
||
|
case 'kuki':
|
||
|
if (this.stream.available(this.headerCache.size)) {
|
||
|
if (this.format.formatID === 'aac ') {
|
||
|
offset = this.stream.offset + this.headerCache.size;
|
||
|
if (cookie = M4ADemuxer.readEsds(this.stream)) {
|
||
|
this.emit('cookie', cookie);
|
||
|
}
|
||
|
this.stream.seek(offset);
|
||
|
} else {
|
||
|
buffer = this.stream.readBuffer(this.headerCache.size);
|
||
|
this.emit('cookie', buffer);
|
||
|
}
|
||
|
this.headerCache = null;
|
||
|
}
|
||
|
break;
|
||
|
case 'pakt':
|
||
|
if (this.stream.available(this.headerCache.size)) {
|
||
|
if (this.stream.readUInt32() !== 0) {
|
||
|
return this.emit('error', 'Sizes greater than 32 bits are not supported.');
|
||
|
}
|
||
|
this.numPackets = this.stream.readUInt32();
|
||
|
if (this.stream.readUInt32() !== 0) {
|
||
|
return this.emit('error', 'Sizes greater than 32 bits are not supported.');
|
||
|
}
|
||
|
this.numFrames = this.stream.readUInt32();
|
||
|
this.primingFrames = this.stream.readUInt32();
|
||
|
this.remainderFrames = this.stream.readUInt32();
|
||
|
this.emit('duration', this.numFrames / this.format.sampleRate * 1000 | 0);
|
||
|
this.sentDuration = true;
|
||
|
byteOffset = 0;
|
||
|
sampleOffset = 0;
|
||
|
for (i = _i = 0, _ref = this.numPackets; _i < _ref; i = _i += 1) {
|
||
|
this.addSeekPoint(byteOffset, sampleOffset);
|
||
|
byteOffset += this.format.bytesPerPacket || M4ADemuxer.readDescrLen(this.stream);
|
||
|
sampleOffset += this.format.framesPerPacket || M4ADemuxer.readDescrLen(this.stream);
|
||
|
}
|
||
|
this.headerCache = null;
|
||
|
}
|
||
|
break;
|
||
|
case 'info':
|
||
|
entries = this.stream.readUInt32();
|
||
|
metadata = {};
|
||
|
for (i = _j = 0; 0 <= entries ? _j < entries : _j > entries; i = 0 <= entries ? ++_j : --_j) {
|
||
|
key = this.stream.readString(null);
|
||
|
value = this.stream.readString(null);
|
||
|
metadata[key] = value;
|
||
|
}
|
||
|
this.emit('metadata', metadata);
|
||
|
this.headerCache = null;
|
||
|
break;
|
||
|
case 'data':
|
||
|
if (!this.sentFirstDataChunk) {
|
||
|
this.stream.advance(4);
|
||
|
this.headerCache.size -= 4;
|
||
|
if (this.format.bytesPerPacket !== 0 && !this.sentDuration) {
|
||
|
this.numFrames = this.headerCache.size / this.format.bytesPerPacket;
|
||
|
this.emit('duration', this.numFrames / this.format.sampleRate * 1000 | 0);
|
||
|
}
|
||
|
this.sentFirstDataChunk = true;
|
||
|
}
|
||
|
buffer = this.stream.readSingleBuffer(this.headerCache.size);
|
||
|
this.headerCache.size -= buffer.length;
|
||
|
this.emit('data', buffer);
|
||
|
if (this.headerCache.size <= 0) {
|
||
|
this.headerCache = null;
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
if (this.stream.available(this.headerCache.size)) {
|
||
|
this.stream.advance(this.headerCache.size);
|
||
|
this.headerCache = null;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return CAFDemuxer;
|
||
|
|
||
|
})(Demuxer);
|
||
|
|
||
|
|
||
|
},{"../demuxer":15,"./m4a":19}],19:[function(_dereq_,module,exports){
|
||
|
var Demuxer, M4ADemuxer,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
|
||
|
__indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
|
||
|
|
||
|
Demuxer = _dereq_('../demuxer');
|
||
|
|
||
|
M4ADemuxer = (function(_super) {
|
||
|
var BITS_PER_CHANNEL, TYPES, after, atom, atoms, bool, containers, diskTrack, genres, meta, string;
|
||
|
|
||
|
__extends(M4ADemuxer, _super);
|
||
|
|
||
|
function M4ADemuxer() {
|
||
|
return M4ADemuxer.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Demuxer.register(M4ADemuxer);
|
||
|
|
||
|
TYPES = ['M4A ', 'M4P ', 'M4B ', 'M4V ', 'isom', 'mp42', 'qt '];
|
||
|
|
||
|
M4ADemuxer.probe = function(buffer) {
|
||
|
var _ref;
|
||
|
return buffer.peekString(4, 4) === 'ftyp' && (_ref = buffer.peekString(8, 4), __indexOf.call(TYPES, _ref) >= 0);
|
||
|
};
|
||
|
|
||
|
M4ADemuxer.prototype.init = function() {
|
||
|
this.atoms = [];
|
||
|
this.offsets = [];
|
||
|
this.track = null;
|
||
|
return this.tracks = [];
|
||
|
};
|
||
|
|
||
|
atoms = {};
|
||
|
|
||
|
containers = {};
|
||
|
|
||
|
atom = function(name, fn) {
|
||
|
var c, container, _i, _len, _ref;
|
||
|
c = [];
|
||
|
_ref = name.split('.').slice(0, -1);
|
||
|
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
|
||
|
container = _ref[_i];
|
||
|
c.push(container);
|
||
|
containers[c.join('.')] = true;
|
||
|
}
|
||
|
if (atoms[name] == null) {
|
||
|
atoms[name] = {};
|
||
|
}
|
||
|
return atoms[name].fn = fn;
|
||
|
};
|
||
|
|
||
|
after = function(name, fn) {
|
||
|
if (atoms[name] == null) {
|
||
|
atoms[name] = {};
|
||
|
}
|
||
|
return atoms[name].after = fn;
|
||
|
};
|
||
|
|
||
|
M4ADemuxer.prototype.readChunk = function() {
|
||
|
var handler, path, type;
|
||
|
this["break"] = false;
|
||
|
while (this.stream.available(1) && !this["break"]) {
|
||
|
if (!this.readHeaders) {
|
||
|
if (!this.stream.available(8)) {
|
||
|
return;
|
||
|
}
|
||
|
this.len = this.stream.readUInt32() - 8;
|
||
|
this.type = this.stream.readString(4);
|
||
|
if (this.len === 0) {
|
||
|
continue;
|
||
|
}
|
||
|
this.atoms.push(this.type);
|
||
|
this.offsets.push(this.stream.offset + this.len);
|
||
|
this.readHeaders = true;
|
||
|
}
|
||
|
path = this.atoms.join('.');
|
||
|
handler = atoms[path];
|
||
|
if (handler != null ? handler.fn : void 0) {
|
||
|
if (!(this.stream.available(this.len) || path === 'mdat')) {
|
||
|
return;
|
||
|
}
|
||
|
handler.fn.call(this);
|
||
|
if (path in containers) {
|
||
|
this.readHeaders = false;
|
||
|
}
|
||
|
} else if (path in containers) {
|
||
|
this.readHeaders = false;
|
||
|
} else {
|
||
|
if (!this.stream.available(this.len)) {
|
||
|
return;
|
||
|
}
|
||
|
this.stream.advance(this.len);
|
||
|
}
|
||
|
while (this.stream.offset >= this.offsets[this.offsets.length - 1]) {
|
||
|
handler = atoms[this.atoms.join('.')];
|
||
|
if (handler != null ? handler.after : void 0) {
|
||
|
handler.after.call(this);
|
||
|
}
|
||
|
type = this.atoms.pop();
|
||
|
this.offsets.pop();
|
||
|
this.readHeaders = false;
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
atom('ftyp', function() {
|
||
|
var _ref;
|
||
|
if (_ref = this.stream.readString(4), __indexOf.call(TYPES, _ref) < 0) {
|
||
|
return this.emit('error', 'Not a valid M4A file.');
|
||
|
}
|
||
|
return this.stream.advance(this.len - 4);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak', function() {
|
||
|
this.track = {};
|
||
|
return this.tracks.push(this.track);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.tkhd', function() {
|
||
|
this.stream.advance(4);
|
||
|
this.stream.advance(8);
|
||
|
this.track.id = this.stream.readUInt32();
|
||
|
return this.stream.advance(this.len - 16);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.hdlr', function() {
|
||
|
this.stream.advance(4);
|
||
|
this.stream.advance(4);
|
||
|
this.track.type = this.stream.readString(4);
|
||
|
this.stream.advance(12);
|
||
|
return this.stream.advance(this.len - 24);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.mdhd', function() {
|
||
|
this.stream.advance(4);
|
||
|
this.stream.advance(8);
|
||
|
this.track.timeScale = this.stream.readUInt32();
|
||
|
this.track.duration = this.stream.readUInt32();
|
||
|
return this.stream.advance(4);
|
||
|
});
|
||
|
|
||
|
BITS_PER_CHANNEL = {
|
||
|
ulaw: 8,
|
||
|
alaw: 8,
|
||
|
in24: 24,
|
||
|
in32: 32,
|
||
|
fl32: 32,
|
||
|
fl64: 64
|
||
|
};
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsd', function() {
|
||
|
var format, numEntries, version, _ref, _ref1;
|
||
|
this.stream.advance(4);
|
||
|
numEntries = this.stream.readUInt32();
|
||
|
if (this.track.type !== 'soun') {
|
||
|
return this.stream.advance(this.len - 8);
|
||
|
}
|
||
|
if (numEntries !== 1) {
|
||
|
return this.emit('error', "Only expecting one entry in sample description atom!");
|
||
|
}
|
||
|
this.stream.advance(4);
|
||
|
format = this.track.format = {};
|
||
|
format.formatID = this.stream.readString(4);
|
||
|
this.stream.advance(6);
|
||
|
this.stream.advance(2);
|
||
|
version = this.stream.readUInt16();
|
||
|
this.stream.advance(6);
|
||
|
format.channelsPerFrame = this.stream.readUInt16();
|
||
|
format.bitsPerChannel = this.stream.readUInt16();
|
||
|
this.stream.advance(4);
|
||
|
format.sampleRate = this.stream.readUInt16();
|
||
|
this.stream.advance(2);
|
||
|
if (version === 1) {
|
||
|
format.framesPerPacket = this.stream.readUInt32();
|
||
|
this.stream.advance(4);
|
||
|
format.bytesPerFrame = this.stream.readUInt32();
|
||
|
this.stream.advance(4);
|
||
|
} else if (version !== 0) {
|
||
|
this.emit('error', 'Unknown version in stsd atom');
|
||
|
}
|
||
|
if (BITS_PER_CHANNEL[format.formatID] != null) {
|
||
|
format.bitsPerChannel = BITS_PER_CHANNEL[format.formatID];
|
||
|
}
|
||
|
format.floatingPoint = (_ref = format.formatID) === 'fl32' || _ref === 'fl64';
|
||
|
format.littleEndian = format.formatID === 'sowt' && format.bitsPerChannel > 8;
|
||
|
if ((_ref1 = format.formatID) === 'twos' || _ref1 === 'sowt' || _ref1 === 'in24' || _ref1 === 'in32' || _ref1 === 'fl32' || _ref1 === 'fl64' || _ref1 === 'raw ' || _ref1 === 'NONE') {
|
||
|
return format.formatID = 'lpcm';
|
||
|
}
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsd.alac', function() {
|
||
|
this.stream.advance(4);
|
||
|
return this.track.cookie = this.stream.readBuffer(this.len - 4);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsd.esds', function() {
|
||
|
var offset;
|
||
|
offset = this.stream.offset + this.len;
|
||
|
this.track.cookie = M4ADemuxer.readEsds(this.stream);
|
||
|
return this.stream.seek(offset);
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsd.wave.enda', function() {
|
||
|
return this.track.format.littleEndian = !!this.stream.readUInt16();
|
||
|
});
|
||
|
|
||
|
M4ADemuxer.readDescrLen = function(stream) {
|
||
|
var c, count, len;
|
||
|
len = 0;
|
||
|
count = 4;
|
||
|
while (count--) {
|
||
|
c = stream.readUInt8();
|
||
|
len = (len << 7) | (c & 0x7f);
|
||
|
if (!(c & 0x80)) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
return len;
|
||
|
};
|
||
|
|
||
|
M4ADemuxer.readEsds = function(stream) {
|
||
|
var codec_id, flags, len, tag;
|
||
|
stream.advance(4);
|
||
|
tag = stream.readUInt8();
|
||
|
len = M4ADemuxer.readDescrLen(stream);
|
||
|
if (tag === 0x03) {
|
||
|
stream.advance(2);
|
||
|
flags = stream.readUInt8();
|
||
|
if (flags & 0x80) {
|
||
|
stream.advance(2);
|
||
|
}
|
||
|
if (flags & 0x40) {
|
||
|
stream.advance(stream.readUInt8());
|
||
|
}
|
||
|
if (flags & 0x20) {
|
||
|
stream.advance(2);
|
||
|
}
|
||
|
} else {
|
||
|
stream.advance(2);
|
||
|
}
|
||
|
tag = stream.readUInt8();
|
||
|
len = M4ADemuxer.readDescrLen(stream);
|
||
|
if (tag === 0x04) {
|
||
|
codec_id = stream.readUInt8();
|
||
|
stream.advance(1);
|
||
|
stream.advance(3);
|
||
|
stream.advance(4);
|
||
|
stream.advance(4);
|
||
|
tag = stream.readUInt8();
|
||
|
len = M4ADemuxer.readDescrLen(stream);
|
||
|
if (tag === 0x05) {
|
||
|
return stream.readBuffer(len);
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
};
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stts', function() {
|
||
|
var entries, i, _i;
|
||
|
this.stream.advance(4);
|
||
|
entries = this.stream.readUInt32();
|
||
|
this.track.stts = [];
|
||
|
for (i = _i = 0; _i < entries; i = _i += 1) {
|
||
|
this.track.stts[i] = {
|
||
|
count: this.stream.readUInt32(),
|
||
|
duration: this.stream.readUInt32()
|
||
|
};
|
||
|
}
|
||
|
return this.setupSeekPoints();
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsc', function() {
|
||
|
var entries, i, _i;
|
||
|
this.stream.advance(4);
|
||
|
entries = this.stream.readUInt32();
|
||
|
this.track.stsc = [];
|
||
|
for (i = _i = 0; _i < entries; i = _i += 1) {
|
||
|
this.track.stsc[i] = {
|
||
|
first: this.stream.readUInt32(),
|
||
|
count: this.stream.readUInt32(),
|
||
|
id: this.stream.readUInt32()
|
||
|
};
|
||
|
}
|
||
|
return this.setupSeekPoints();
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stsz', function() {
|
||
|
var entries, i, _i;
|
||
|
this.stream.advance(4);
|
||
|
this.track.sampleSize = this.stream.readUInt32();
|
||
|
entries = this.stream.readUInt32();
|
||
|
if (this.track.sampleSize === 0 && entries > 0) {
|
||
|
this.track.sampleSizes = [];
|
||
|
for (i = _i = 0; _i < entries; i = _i += 1) {
|
||
|
this.track.sampleSizes[i] = this.stream.readUInt32();
|
||
|
}
|
||
|
}
|
||
|
return this.setupSeekPoints();
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.mdia.minf.stbl.stco', function() {
|
||
|
var entries, i, _i;
|
||
|
this.stream.advance(4);
|
||
|
entries = this.stream.readUInt32();
|
||
|
this.track.chunkOffsets = [];
|
||
|
for (i = _i = 0; _i < entries; i = _i += 1) {
|
||
|
this.track.chunkOffsets[i] = this.stream.readUInt32();
|
||
|
}
|
||
|
return this.setupSeekPoints();
|
||
|
});
|
||
|
|
||
|
atom('moov.trak.tref.chap', function() {
|
||
|
var entries, i, _i;
|
||
|
entries = this.len >> 2;
|
||
|
this.track.chapterTracks = [];
|
||
|
for (i = _i = 0; _i < entries; i = _i += 1) {
|
||
|
this.track.chapterTracks[i] = this.stream.readUInt32();
|
||
|
}
|
||
|
});
|
||
|
|
||
|
M4ADemuxer.prototype.setupSeekPoints = function() {
|
||
|
var i, j, offset, position, sampleIndex, size, stscIndex, sttsIndex, sttsSample, timestamp, _i, _j, _len, _ref, _ref1, _results;
|
||
|
if (!((this.track.chunkOffsets != null) && (this.track.stsc != null) && (this.track.sampleSize != null) && (this.track.stts != null))) {
|
||
|
return;
|
||
|
}
|
||
|
stscIndex = 0;
|
||
|
sttsIndex = 0;
|
||
|
sttsIndex = 0;
|
||
|
sttsSample = 0;
|
||
|
sampleIndex = 0;
|
||
|
offset = 0;
|
||
|
timestamp = 0;
|
||
|
this.track.seekPoints = [];
|
||
|
_ref = this.track.chunkOffsets;
|
||
|
_results = [];
|
||
|
for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
|
||
|
position = _ref[i];
|
||
|
for (j = _j = 0, _ref1 = this.track.stsc[stscIndex].count; _j < _ref1; j = _j += 1) {
|
||
|
this.track.seekPoints.push({
|
||
|
offset: offset,
|
||
|
position: position,
|
||
|
timestamp: timestamp
|
||
|
});
|
||
|
size = this.track.sampleSize || this.track.sampleSizes[sampleIndex++];
|
||
|
offset += size;
|
||
|
position += size;
|
||
|
timestamp += this.track.stts[sttsIndex].duration;
|
||
|
if (sttsIndex + 1 < this.track.stts.length && ++sttsSample === this.track.stts[sttsIndex].count) {
|
||
|
sttsSample = 0;
|
||
|
sttsIndex++;
|
||
|
}
|
||
|
}
|
||
|
if (stscIndex + 1 < this.track.stsc.length && i + 1 === this.track.stsc[stscIndex + 1].first) {
|
||
|
_results.push(stscIndex++);
|
||
|
} else {
|
||
|
_results.push(void 0);
|
||
|
}
|
||
|
}
|
||
|
return _results;
|
||
|
};
|
||
|
|
||
|
after('moov', function() {
|
||
|
var track, _i, _len, _ref;
|
||
|
if (this.mdatOffset != null) {
|
||
|
this.stream.seek(this.mdatOffset - 8);
|
||
|
}
|
||
|
_ref = this.tracks;
|
||
|
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
|
||
|
track = _ref[_i];
|
||
|
if (!(track.type === 'soun')) {
|
||
|
continue;
|
||
|
}
|
||
|
this.track = track;
|
||
|
break;
|
||
|
}
|
||
|
if (this.track.type !== 'soun') {
|
||
|
this.track = null;
|
||
|
return this.emit('error', 'No audio tracks in m4a file.');
|
||
|
}
|
||
|
this.emit('format', this.track.format);
|
||
|
this.emit('duration', this.track.duration / this.track.timeScale * 1000 | 0);
|
||
|
if (this.track.cookie) {
|
||
|
this.emit('cookie', this.track.cookie);
|
||
|
}
|
||
|
return this.seekPoints = this.track.seekPoints;
|
||
|
});
|
||
|
|
||
|
atom('mdat', function() {
|
||
|
var bytes, chunkSize, length, numSamples, offset, sample, size, _i;
|
||
|
if (!this.startedData) {
|
||
|
if (this.mdatOffset == null) {
|
||
|
this.mdatOffset = this.stream.offset;
|
||
|
}
|
||
|
if (this.tracks.length === 0) {
|
||
|
bytes = Math.min(this.stream.remainingBytes(), this.len);
|
||
|
this.stream.advance(bytes);
|
||
|
this.len -= bytes;
|
||
|
return;
|
||
|
}
|
||
|
this.chunkIndex = 0;
|
||
|
this.stscIndex = 0;
|
||
|
this.sampleIndex = 0;
|
||
|
this.tailOffset = 0;
|
||
|
this.tailSamples = 0;
|
||
|
this.startedData = true;
|
||
|
}
|
||
|
if (!this.readChapters) {
|
||
|
this.readChapters = this.parseChapters();
|
||
|
if (this["break"] = !this.readChapters) {
|
||
|
return;
|
||
|
}
|
||
|
this.stream.seek(this.mdatOffset);
|
||
|
}
|
||
|
offset = this.track.chunkOffsets[this.chunkIndex] + this.tailOffset;
|
||
|
length = 0;
|
||
|
if (!this.stream.available(offset - this.stream.offset)) {
|
||
|
this["break"] = true;
|
||
|
return;
|
||
|
}
|
||
|
this.stream.seek(offset);
|
||
|
while (this.chunkIndex < this.track.chunkOffsets.length) {
|
||
|
numSamples = this.track.stsc[this.stscIndex].count - this.tailSamples;
|
||
|
chunkSize = 0;
|
||
|
for (sample = _i = 0; _i < numSamples; sample = _i += 1) {
|
||
|
size = this.track.sampleSize || this.track.sampleSizes[this.sampleIndex];
|
||
|
if (!this.stream.available(length + size)) {
|
||
|
break;
|
||
|
}
|
||
|
length += size;
|
||
|
chunkSize += size;
|
||
|
this.sampleIndex++;
|
||
|
}
|
||
|
if (sample < numSamples) {
|
||
|
this.tailOffset += chunkSize;
|
||
|
this.tailSamples += sample;
|
||
|
break;
|
||
|
} else {
|
||
|
this.chunkIndex++;
|
||
|
this.tailOffset = 0;
|
||
|
this.tailSamples = 0;
|
||
|
if (this.stscIndex + 1 < this.track.stsc.length && this.chunkIndex + 1 === this.track.stsc[this.stscIndex + 1].first) {
|
||
|
this.stscIndex++;
|
||
|
}
|
||
|
if (offset + length !== this.track.chunkOffsets[this.chunkIndex]) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
if (length > 0) {
|
||
|
this.emit('data', this.stream.readBuffer(length));
|
||
|
return this["break"] = this.chunkIndex === this.track.chunkOffsets.length;
|
||
|
} else {
|
||
|
return this["break"] = true;
|
||
|
}
|
||
|
});
|
||
|
|
||
|
M4ADemuxer.prototype.parseChapters = function() {
|
||
|
var bom, id, len, nextTimestamp, point, title, track, _i, _len, _ref, _ref1, _ref2, _ref3;
|
||
|
if (!(((_ref = this.track.chapterTracks) != null ? _ref.length : void 0) > 0)) {
|
||
|
return true;
|
||
|
}
|
||
|
id = this.track.chapterTracks[0];
|
||
|
_ref1 = this.tracks;
|
||
|
for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
|
||
|
track = _ref1[_i];
|
||
|
if (track.id === id) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (track.id !== id) {
|
||
|
this.emit('error', 'Chapter track does not exist.');
|
||
|
}
|
||
|
if (this.chapters == null) {
|
||
|
this.chapters = [];
|
||
|
}
|
||
|
while (this.chapters.length < track.seekPoints.length) {
|
||
|
point = track.seekPoints[this.chapters.length];
|
||
|
if (!this.stream.available(point.position - this.stream.offset + 32)) {
|
||
|
return false;
|
||
|
}
|
||
|
this.stream.seek(point.position);
|
||
|
len = this.stream.readUInt16();
|
||
|
title = null;
|
||
|
if (!this.stream.available(len)) {
|
||
|
return false;
|
||
|
}
|
||
|
if (len > 2) {
|
||
|
bom = this.stream.peekUInt16();
|
||
|
if (bom === 0xfeff || bom === 0xfffe) {
|
||
|
title = this.stream.readString(len, 'utf16-bom');
|
||
|
}
|
||
|
}
|
||
|
if (title == null) {
|
||
|
title = this.stream.readString(len, 'utf8');
|
||
|
}
|
||
|
nextTimestamp = (_ref2 = (_ref3 = track.seekPoints[this.chapters.length + 1]) != null ? _ref3.timestamp : void 0) != null ? _ref2 : track.duration;
|
||
|
this.chapters.push({
|
||
|
title: title,
|
||
|
timestamp: point.timestamp / track.timeScale * 1000 | 0,
|
||
|
duration: (nextTimestamp - point.timestamp) / track.timeScale * 1000 | 0
|
||
|
});
|
||
|
}
|
||
|
this.emit('chapters', this.chapters);
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
atom('moov.udta.meta', function() {
|
||
|
this.metadata = {};
|
||
|
return this.stream.advance(4);
|
||
|
});
|
||
|
|
||
|
after('moov.udta.meta', function() {
|
||
|
return this.emit('metadata', this.metadata);
|
||
|
});
|
||
|
|
||
|
meta = function(field, name, fn) {
|
||
|
return atom("moov.udta.meta.ilst." + field + ".data", function() {
|
||
|
this.stream.advance(8);
|
||
|
this.len -= 8;
|
||
|
return fn.call(this, name);
|
||
|
});
|
||
|
};
|
||
|
|
||
|
string = function(field) {
|
||
|
return this.metadata[field] = this.stream.readString(this.len, 'utf8');
|
||
|
};
|
||
|
|
||
|
meta('©alb', 'album', string);
|
||
|
|
||
|
meta('©arg', 'arranger', string);
|
||
|
|
||
|
meta('©art', 'artist', string);
|
||
|
|
||
|
meta('©ART', 'artist', string);
|
||
|
|
||
|
meta('aART', 'albumArtist', string);
|
||
|
|
||
|
meta('catg', 'category', string);
|
||
|
|
||
|
meta('©com', 'composer', string);
|
||
|
|
||
|
meta('©cpy', 'copyright', string);
|
||
|
|
||
|
meta('cprt', 'copyright', string);
|
||
|
|
||
|
meta('©cmt', 'comments', string);
|
||
|
|
||
|
meta('©day', 'releaseDate', string);
|
||
|
|
||
|
meta('desc', 'description', string);
|
||
|
|
||
|
meta('©gen', 'genre', string);
|
||
|
|
||
|
meta('©grp', 'grouping', string);
|
||
|
|
||
|
meta('©isr', 'ISRC', string);
|
||
|
|
||
|
meta('keyw', 'keywords', string);
|
||
|
|
||
|
meta('©lab', 'recordLabel', string);
|
||
|
|
||
|
meta('ldes', 'longDescription', string);
|
||
|
|
||
|
meta('©lyr', 'lyrics', string);
|
||
|
|
||
|
meta('©nam', 'title', string);
|
||
|
|
||
|
meta('©phg', 'recordingCopyright', string);
|
||
|
|
||
|
meta('©prd', 'producer', string);
|
||
|
|
||
|
meta('©prf', 'performers', string);
|
||
|
|
||
|
meta('purd', 'purchaseDate', string);
|
||
|
|
||
|
meta('purl', 'podcastURL', string);
|
||
|
|
||
|
meta('©swf', 'songwriter', string);
|
||
|
|
||
|
meta('©too', 'encoder', string);
|
||
|
|
||
|
meta('©wrt', 'composer', string);
|
||
|
|
||
|
meta('covr', 'coverArt', function(field) {
|
||
|
return this.metadata[field] = this.stream.readBuffer(this.len);
|
||
|
});
|
||
|
|
||
|
genres = ["Blues", "Classic Rock", "Country", "Dance", "Disco", "Funk", "Grunge", "Hip-Hop", "Jazz", "Metal", "New Age", "Oldies", "Other", "Pop", "R&B", "Rap", "Reggae", "Rock", "Techno", "Industrial", "Alternative", "Ska", "Death Metal", "Pranks", "Soundtrack", "Euro-Techno", "Ambient", "Trip-Hop", "Vocal", "Jazz+Funk", "Fusion", "Trance", "Classical", "Instrumental", "Acid", "House", "Game", "Sound Clip", "Gospel", "Noise", "AlternRock", "Bass", "Soul", "Punk", "Space", "Meditative", "Instrumental Pop", "Instrumental Rock", "Ethnic", "Gothic", "Darkwave", "Techno-Industrial", "Electronic", "Pop-Folk", "Eurodance", "Dream", "Southern Rock", "Comedy", "Cult", "Gangsta", "Top 40", "Christian Rap", "Pop/Funk", "Jungle", "Native American", "Cabaret", "New Wave", "Psychadelic", "Rave", "Showtunes", "Trailer", "Lo-Fi", "Tribal", "Acid Punk", "Acid Jazz", "Polka", "Retro", "Musical", "Rock & Roll", "Hard Rock", "Folk", "Folk/Rock", "National Folk", "Swing", "Fast Fusion", "Bebob", "Latin", "Revival", "Celtic", "Bluegrass", "Avantgarde", "Gothic Rock", "Progressive Rock", "Psychedelic Rock", "Symphonic Rock", "Slow Rock", "Big Band", "Chorus", "Easy Listening", "Acoustic", "Humour", "Speech", "Chanson", "Opera", "Chamber Music", "Sonata", "Symphony", "Booty Bass", "Primus", "Porn Groove", "Satire", "Slow Jam", "Club", "Tango", "Samba", "Folklore", "Ballad", "Power Ballad", "Rhythmic Soul", "Freestyle", "Duet", "Punk Rock", "Drum Solo", "A Capella", "Euro-House", "Dance Hall"];
|
||
|
|
||
|
meta('gnre', 'genre', function(field) {
|
||
|
return this.metadata[field] = genres[this.stream.readUInt16() - 1];
|
||
|
});
|
||
|
|
||
|
meta('tmpo', 'tempo', function(field) {
|
||
|
return this.metadata[field] = this.stream.readUInt16();
|
||
|
});
|
||
|
|
||
|
meta('rtng', 'rating', function(field) {
|
||
|
var rating;
|
||
|
rating = this.stream.readUInt8();
|
||
|
return this.metadata[field] = rating === 2 ? 'Clean' : rating !== 0 ? 'Explicit' : 'None';
|
||
|
});
|
||
|
|
||
|
diskTrack = function(field) {
|
||
|
this.stream.advance(2);
|
||
|
this.metadata[field] = this.stream.readUInt16() + ' of ' + this.stream.readUInt16();
|
||
|
return this.stream.advance(this.len - 6);
|
||
|
};
|
||
|
|
||
|
meta('disk', 'diskNumber', diskTrack);
|
||
|
|
||
|
meta('trkn', 'trackNumber', diskTrack);
|
||
|
|
||
|
bool = function(field) {
|
||
|
return this.metadata[field] = this.stream.readUInt8() === 1;
|
||
|
};
|
||
|
|
||
|
meta('cpil', 'compilation', bool);
|
||
|
|
||
|
meta('pcst', 'podcast', bool);
|
||
|
|
||
|
meta('pgap', 'gapless', bool);
|
||
|
|
||
|
return M4ADemuxer;
|
||
|
|
||
|
})(Demuxer);
|
||
|
|
||
|
module.exports = M4ADemuxer;
|
||
|
|
||
|
|
||
|
},{"../demuxer":15}],20:[function(_dereq_,module,exports){
|
||
|
var Demuxer, WAVEDemuxer,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Demuxer = _dereq_('../demuxer');
|
||
|
|
||
|
WAVEDemuxer = (function(_super) {
|
||
|
var formats;
|
||
|
|
||
|
__extends(WAVEDemuxer, _super);
|
||
|
|
||
|
function WAVEDemuxer() {
|
||
|
return WAVEDemuxer.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
Demuxer.register(WAVEDemuxer);
|
||
|
|
||
|
WAVEDemuxer.probe = function(buffer) {
|
||
|
return buffer.peekString(0, 4) === 'RIFF' && buffer.peekString(8, 4) === 'WAVE';
|
||
|
};
|
||
|
|
||
|
formats = {
|
||
|
0x0001: 'lpcm',
|
||
|
0x0003: 'lpcm',
|
||
|
0x0006: 'alaw',
|
||
|
0x0007: 'ulaw'
|
||
|
};
|
||
|
|
||
|
WAVEDemuxer.prototype.readChunk = function() {
|
||
|
var buffer, bytes, encoding;
|
||
|
if (!this.readStart && this.stream.available(12)) {
|
||
|
if (this.stream.readString(4) !== 'RIFF') {
|
||
|
return this.emit('error', 'Invalid WAV file.');
|
||
|
}
|
||
|
this.fileSize = this.stream.readUInt32(true);
|
||
|
this.readStart = true;
|
||
|
if (this.stream.readString(4) !== 'WAVE') {
|
||
|
return this.emit('error', 'Invalid WAV file.');
|
||
|
}
|
||
|
}
|
||
|
while (this.stream.available(1)) {
|
||
|
if (!this.readHeaders && this.stream.available(8)) {
|
||
|
this.type = this.stream.readString(4);
|
||
|
this.len = this.stream.readUInt32(true);
|
||
|
}
|
||
|
switch (this.type) {
|
||
|
case 'fmt ':
|
||
|
encoding = this.stream.readUInt16(true);
|
||
|
if (!(encoding in formats)) {
|
||
|
return this.emit('error', 'Unsupported format in WAV file.');
|
||
|
}
|
||
|
this.format = {
|
||
|
formatID: formats[encoding],
|
||
|
floatingPoint: encoding === 0x0003,
|
||
|
littleEndian: formats[encoding] === 'lpcm',
|
||
|
channelsPerFrame: this.stream.readUInt16(true),
|
||
|
sampleRate: this.stream.readUInt32(true),
|
||
|
framesPerPacket: 1
|
||
|
};
|
||
|
this.stream.advance(4);
|
||
|
this.stream.advance(2);
|
||
|
this.format.bitsPerChannel = this.stream.readUInt16(true);
|
||
|
this.format.bytesPerPacket = (this.format.bitsPerChannel / 8) * this.format.channelsPerFrame;
|
||
|
this.emit('format', this.format);
|
||
|
this.stream.advance(this.len - 16);
|
||
|
break;
|
||
|
case 'data':
|
||
|
if (!this.sentDuration) {
|
||
|
bytes = this.format.bitsPerChannel / 8;
|
||
|
this.emit('duration', this.len / bytes / this.format.channelsPerFrame / this.format.sampleRate * 1000 | 0);
|
||
|
this.sentDuration = true;
|
||
|
}
|
||
|
buffer = this.stream.readSingleBuffer(this.len);
|
||
|
this.len -= buffer.length;
|
||
|
this.readHeaders = this.len > 0;
|
||
|
this.emit('data', buffer);
|
||
|
break;
|
||
|
default:
|
||
|
if (!this.stream.available(this.len)) {
|
||
|
return;
|
||
|
}
|
||
|
this.stream.advance(this.len);
|
||
|
}
|
||
|
if (this.type !== 'data') {
|
||
|
this.readHeaders = false;
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return WAVEDemuxer;
|
||
|
|
||
|
})(Demuxer);
|
||
|
|
||
|
|
||
|
},{"../demuxer":15}],21:[function(_dereq_,module,exports){
|
||
|
var AudioDevice, EventEmitter,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('./core/events');
|
||
|
|
||
|
AudioDevice = (function(_super) {
|
||
|
var devices;
|
||
|
|
||
|
__extends(AudioDevice, _super);
|
||
|
|
||
|
function AudioDevice(sampleRate, channels) {
|
||
|
this.sampleRate = sampleRate;
|
||
|
this.channels = channels;
|
||
|
this.updateTime = __bind(this.updateTime, this);
|
||
|
this.playing = false;
|
||
|
this.currentTime = 0;
|
||
|
this._lastTime = 0;
|
||
|
}
|
||
|
|
||
|
AudioDevice.prototype.start = function() {
|
||
|
if (this.playing) {
|
||
|
return;
|
||
|
}
|
||
|
this.playing = true;
|
||
|
if (this.device == null) {
|
||
|
this.device = AudioDevice.create(this.sampleRate, this.channels);
|
||
|
}
|
||
|
if (!this.device) {
|
||
|
throw new Error("No supported audio device found.");
|
||
|
}
|
||
|
this._lastTime = this.device.getDeviceTime();
|
||
|
this._timer = setInterval(this.updateTime, 200);
|
||
|
return this.device.on('refill', this.refill = (function(_this) {
|
||
|
return function(buffer) {
|
||
|
return _this.emit('refill', buffer);
|
||
|
};
|
||
|
})(this));
|
||
|
};
|
||
|
|
||
|
AudioDevice.prototype.stop = function() {
|
||
|
if (!this.playing) {
|
||
|
return;
|
||
|
}
|
||
|
this.playing = false;
|
||
|
this.device.off('refill', this.refill);
|
||
|
return clearInterval(this._timer);
|
||
|
};
|
||
|
|
||
|
AudioDevice.prototype.destroy = function() {
|
||
|
this.stop();
|
||
|
return this.device.destroy();
|
||
|
};
|
||
|
|
||
|
AudioDevice.prototype.seek = function(currentTime) {
|
||
|
this.currentTime = currentTime;
|
||
|
if (this.playing) {
|
||
|
this._lastTime = this.device.getDeviceTime();
|
||
|
}
|
||
|
return this.emit('timeUpdate', this.currentTime);
|
||
|
};
|
||
|
|
||
|
AudioDevice.prototype.updateTime = function() {
|
||
|
var time;
|
||
|
time = this.device.getDeviceTime();
|
||
|
this.currentTime += (time - this._lastTime) / this.device.sampleRate * 1000 | 0;
|
||
|
this._lastTime = time;
|
||
|
return this.emit('timeUpdate', this.currentTime);
|
||
|
};
|
||
|
|
||
|
devices = [];
|
||
|
|
||
|
AudioDevice.register = function(device) {
|
||
|
return devices.push(device);
|
||
|
};
|
||
|
|
||
|
AudioDevice.create = function(sampleRate, channels) {
|
||
|
var device, _i, _len;
|
||
|
for (_i = 0, _len = devices.length; _i < _len; _i++) {
|
||
|
device = devices[_i];
|
||
|
if (device.supported) {
|
||
|
return new device(sampleRate, channels);
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
};
|
||
|
|
||
|
return AudioDevice;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = AudioDevice;
|
||
|
|
||
|
|
||
|
},{"./core/events":9}],22:[function(_dereq_,module,exports){
|
||
|
var AVBuffer, AudioDevice, EventEmitter, MozillaAudioDevice,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('../core/events');
|
||
|
|
||
|
AudioDevice = _dereq_('../device');
|
||
|
|
||
|
AVBuffer = _dereq_('../core/buffer');
|
||
|
|
||
|
MozillaAudioDevice = (function(_super) {
|
||
|
var createTimer, destroyTimer;
|
||
|
|
||
|
__extends(MozillaAudioDevice, _super);
|
||
|
|
||
|
AudioDevice.register(MozillaAudioDevice);
|
||
|
|
||
|
MozillaAudioDevice.supported = (typeof Audio !== "undefined" && Audio !== null) && 'mozWriteAudio' in new Audio;
|
||
|
|
||
|
function MozillaAudioDevice(sampleRate, channels) {
|
||
|
this.sampleRate = sampleRate;
|
||
|
this.channels = channels;
|
||
|
this.refill = __bind(this.refill, this);
|
||
|
this.audio = new Audio;
|
||
|
this.audio.mozSetup(this.channels, this.sampleRate);
|
||
|
this.writePosition = 0;
|
||
|
this.prebufferSize = this.sampleRate / 2;
|
||
|
this.tail = null;
|
||
|
this.timer = createTimer(this.refill, 100);
|
||
|
}
|
||
|
|
||
|
MozillaAudioDevice.prototype.refill = function() {
|
||
|
var available, buffer, currentPosition, written;
|
||
|
if (this.tail) {
|
||
|
written = this.audio.mozWriteAudio(this.tail);
|
||
|
this.writePosition += written;
|
||
|
if (this.writePosition < this.tail.length) {
|
||
|
this.tail = this.tail.subarray(written);
|
||
|
} else {
|
||
|
this.tail = null;
|
||
|
}
|
||
|
}
|
||
|
currentPosition = this.audio.mozCurrentSampleOffset();
|
||
|
available = currentPosition + this.prebufferSize - this.writePosition;
|
||
|
if (available > 0) {
|
||
|
buffer = new Float32Array(available);
|
||
|
this.emit('refill', buffer);
|
||
|
written = this.audio.mozWriteAudio(buffer);
|
||
|
if (written < buffer.length) {
|
||
|
this.tail = buffer.subarray(written);
|
||
|
}
|
||
|
this.writePosition += written;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
MozillaAudioDevice.prototype.destroy = function() {
|
||
|
return destroyTimer(this.timer);
|
||
|
};
|
||
|
|
||
|
MozillaAudioDevice.prototype.getDeviceTime = function() {
|
||
|
return this.audio.mozCurrentSampleOffset() / this.channels;
|
||
|
};
|
||
|
|
||
|
createTimer = function(fn, interval) {
|
||
|
var url, worker;
|
||
|
url = AVBuffer.makeBlobURL("setInterval(function() { postMessage('ping'); }, " + interval + ");");
|
||
|
if (url == null) {
|
||
|
return setInterval(fn, interval);
|
||
|
}
|
||
|
worker = new Worker(url);
|
||
|
worker.onmessage = fn;
|
||
|
worker.url = url;
|
||
|
return worker;
|
||
|
};
|
||
|
|
||
|
destroyTimer = function(timer) {
|
||
|
if (timer.terminate) {
|
||
|
timer.terminate();
|
||
|
return URL.revokeObjectURL(timer.url);
|
||
|
} else {
|
||
|
return clearInterval(timer);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return MozillaAudioDevice;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
|
||
|
},{"../core/buffer":7,"../core/events":9,"../device":21}],23:[function(_dereq_,module,exports){
|
||
|
/*
|
||
|
* This resampler is from XAudioJS: https://github.com/grantgalitz/XAudioJS
|
||
|
* Planned to be replaced with src.js, eventually: https://github.com/jussi-kalliokoski/src.js
|
||
|
*/
|
||
|
|
||
|
//JavaScript Audio Resampler (c) 2011 - Grant Galitz
|
||
|
function Resampler(fromSampleRate, toSampleRate, channels, outputBufferSize, noReturn) {
|
||
|
this.fromSampleRate = fromSampleRate;
|
||
|
this.toSampleRate = toSampleRate;
|
||
|
this.channels = channels | 0;
|
||
|
this.outputBufferSize = outputBufferSize;
|
||
|
this.noReturn = !!noReturn;
|
||
|
this.initialize();
|
||
|
}
|
||
|
|
||
|
Resampler.prototype.initialize = function () {
|
||
|
//Perform some checks:
|
||
|
if (this.fromSampleRate > 0 && this.toSampleRate > 0 && this.channels > 0) {
|
||
|
if (this.fromSampleRate == this.toSampleRate) {
|
||
|
//Setup a resampler bypass:
|
||
|
this.resampler = this.bypassResampler; //Resampler just returns what was passed through.
|
||
|
this.ratioWeight = 1;
|
||
|
}
|
||
|
else {
|
||
|
if (this.fromSampleRate < this.toSampleRate) {
|
||
|
/*
|
||
|
Use generic linear interpolation if upsampling,
|
||
|
as linear interpolation produces a gradient that we want
|
||
|
and works fine with two input sample points per output in this case.
|
||
|
*/
|
||
|
this.compileLinearInterpolationFunction();
|
||
|
this.lastWeight = 1;
|
||
|
}
|
||
|
else {
|
||
|
/*
|
||
|
Custom resampler I wrote that doesn't skip samples
|
||
|
like standard linear interpolation in high downsampling.
|
||
|
This is more accurate than linear interpolation on downsampling.
|
||
|
*/
|
||
|
this.compileMultiTapFunction();
|
||
|
this.tailExists = false;
|
||
|
this.lastWeight = 0;
|
||
|
}
|
||
|
this.ratioWeight = this.fromSampleRate / this.toSampleRate;
|
||
|
this.initializeBuffers();
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
throw(new Error("Invalid settings specified for the resampler."));
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Resampler.prototype.compileLinearInterpolationFunction = function () {
|
||
|
var toCompile = "var bufferLength = buffer.length;\
|
||
|
var outLength = this.outputBufferSize;\
|
||
|
if ((bufferLength % " + this.channels + ") == 0) {\
|
||
|
if (bufferLength > 0) {\
|
||
|
var ratioWeight = this.ratioWeight;\
|
||
|
var weight = this.lastWeight;\
|
||
|
var firstWeight = 0;\
|
||
|
var secondWeight = 0;\
|
||
|
var sourceOffset = 0;\
|
||
|
var outputOffset = 0;\
|
||
|
var outputBuffer = this.outputBuffer;\
|
||
|
for (; weight < 1; weight += ratioWeight) {\
|
||
|
secondWeight = weight % 1;\
|
||
|
firstWeight = 1 - secondWeight;";
|
||
|
for (var channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "outputBuffer[outputOffset++] = (this.lastOutput[" + channel + "] * firstWeight) + (buffer[" + channel + "] * secondWeight);";
|
||
|
}
|
||
|
toCompile += "}\
|
||
|
weight -= 1;\
|
||
|
for (bufferLength -= " + this.channels + ", sourceOffset = Math.floor(weight) * " + this.channels + "; outputOffset < outLength && sourceOffset < bufferLength;) {\
|
||
|
secondWeight = weight % 1;\
|
||
|
firstWeight = 1 - secondWeight;";
|
||
|
for (var channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "outputBuffer[outputOffset++] = (buffer[sourceOffset" + ((channel > 0) ? (" + " + channel) : "") + "] * firstWeight) + (buffer[sourceOffset + " + (this.channels + channel) + "] * secondWeight);";
|
||
|
}
|
||
|
toCompile += "weight += ratioWeight;\
|
||
|
sourceOffset = Math.floor(weight) * " + this.channels + ";\
|
||
|
}";
|
||
|
for (var channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "this.lastOutput[" + channel + "] = buffer[sourceOffset++];";
|
||
|
}
|
||
|
toCompile += "this.lastWeight = weight % 1;\
|
||
|
return this.bufferSlice(outputOffset);\
|
||
|
}\
|
||
|
else {\
|
||
|
return (this.noReturn) ? 0 : [];\
|
||
|
}\
|
||
|
}\
|
||
|
else {\
|
||
|
throw(new Error(\"Buffer was of incorrect sample length.\"));\
|
||
|
}";
|
||
|
this.resampler = Function("buffer", toCompile);
|
||
|
};
|
||
|
|
||
|
Resampler.prototype.compileMultiTapFunction = function () {
|
||
|
var toCompile = "var bufferLength = buffer.length;\
|
||
|
var outLength = this.outputBufferSize;\
|
||
|
if ((bufferLength % " + this.channels + ") == 0) {\
|
||
|
if (bufferLength > 0) {\
|
||
|
var ratioWeight = this.ratioWeight;\
|
||
|
var weight = 0;";
|
||
|
for (var channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "var output" + channel + " = 0;"
|
||
|
}
|
||
|
toCompile += "var actualPosition = 0;\
|
||
|
var amountToNext = 0;\
|
||
|
var alreadyProcessedTail = !this.tailExists;\
|
||
|
this.tailExists = false;\
|
||
|
var outputBuffer = this.outputBuffer;\
|
||
|
var outputOffset = 0;\
|
||
|
var currentPosition = 0;\
|
||
|
do {\
|
||
|
if (alreadyProcessedTail) {\
|
||
|
weight = ratioWeight;";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "output" + channel + " = 0;"
|
||
|
}
|
||
|
toCompile += "}\
|
||
|
else {\
|
||
|
weight = this.lastWeight;";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "output" + channel + " = this.lastOutput[" + channel + "];"
|
||
|
}
|
||
|
toCompile += "alreadyProcessedTail = true;\
|
||
|
}\
|
||
|
while (weight > 0 && actualPosition < bufferLength) {\
|
||
|
amountToNext = 1 + actualPosition - currentPosition;\
|
||
|
if (weight >= amountToNext) {";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "output" + channel + " += buffer[actualPosition++] * amountToNext;"
|
||
|
}
|
||
|
toCompile += "currentPosition = actualPosition;\
|
||
|
weight -= amountToNext;\
|
||
|
}\
|
||
|
else {";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "output" + channel + " += buffer[actualPosition" + ((channel > 0) ? (" + " + channel) : "") + "] * weight;"
|
||
|
}
|
||
|
toCompile += "currentPosition += weight;\
|
||
|
weight = 0;\
|
||
|
break;\
|
||
|
}\
|
||
|
}\
|
||
|
if (weight == 0) {";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "outputBuffer[outputOffset++] = output" + channel + " / ratioWeight;"
|
||
|
}
|
||
|
toCompile += "}\
|
||
|
else {\
|
||
|
this.lastWeight = weight;";
|
||
|
for (channel = 0; channel < this.channels; ++channel) {
|
||
|
toCompile += "this.lastOutput[" + channel + "] = output" + channel + ";"
|
||
|
}
|
||
|
toCompile += "this.tailExists = true;\
|
||
|
break;\
|
||
|
}\
|
||
|
} while (actualPosition < bufferLength && outputOffset < outLength);\
|
||
|
return this.bufferSlice(outputOffset);\
|
||
|
}\
|
||
|
else {\
|
||
|
return (this.noReturn) ? 0 : [];\
|
||
|
}\
|
||
|
}\
|
||
|
else {\
|
||
|
throw(new Error(\"Buffer was of incorrect sample length.\"));\
|
||
|
}";
|
||
|
this.resampler = Function("buffer", toCompile);
|
||
|
};
|
||
|
|
||
|
Resampler.prototype.bypassResampler = function (buffer) {
|
||
|
if (this.noReturn) {
|
||
|
//Set the buffer passed as our own, as we don't need to resample it:
|
||
|
this.outputBuffer = buffer;
|
||
|
return buffer.length;
|
||
|
}
|
||
|
else {
|
||
|
//Just return the buffer passsed:
|
||
|
return buffer;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Resampler.prototype.bufferSlice = function (sliceAmount) {
|
||
|
if (this.noReturn) {
|
||
|
//If we're going to access the properties directly from this object:
|
||
|
return sliceAmount;
|
||
|
}
|
||
|
else {
|
||
|
//Typed array and normal array buffer section referencing:
|
||
|
try {
|
||
|
return this.outputBuffer.subarray(0, sliceAmount);
|
||
|
}
|
||
|
catch (error) {
|
||
|
try {
|
||
|
//Regular array pass:
|
||
|
this.outputBuffer.length = sliceAmount;
|
||
|
return this.outputBuffer;
|
||
|
}
|
||
|
catch (error) {
|
||
|
//Nightly Firefox 4 used to have the subarray function named as slice:
|
||
|
return this.outputBuffer.slice(0, sliceAmount);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Resampler.prototype.initializeBuffers = function () {
|
||
|
//Initialize the internal buffer:
|
||
|
try {
|
||
|
this.outputBuffer = new Float32Array(this.outputBufferSize);
|
||
|
this.lastOutput = new Float32Array(this.channels);
|
||
|
}
|
||
|
catch (error) {
|
||
|
this.outputBuffer = [];
|
||
|
this.lastOutput = [];
|
||
|
}
|
||
|
};
|
||
|
|
||
|
module.exports = Resampler;
|
||
|
|
||
|
},{}],24:[function(_dereq_,module,exports){
|
||
|
(function (global){
|
||
|
var AudioDevice, EventEmitter, Resampler, WebAudioDevice,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('../core/events');
|
||
|
|
||
|
AudioDevice = _dereq_('../device');
|
||
|
|
||
|
Resampler = _dereq_('./resampler');
|
||
|
|
||
|
WebAudioDevice = (function(_super) {
|
||
|
var AudioContext, createProcessor, sharedContext;
|
||
|
|
||
|
__extends(WebAudioDevice, _super);
|
||
|
|
||
|
AudioDevice.register(WebAudioDevice);
|
||
|
|
||
|
AudioContext = global.AudioContext || global.webkitAudioContext;
|
||
|
|
||
|
WebAudioDevice.supported = AudioContext && (typeof AudioContext.prototype[createProcessor = 'createScriptProcessor'] === 'function' || typeof AudioContext.prototype[createProcessor = 'createJavaScriptNode'] === 'function');
|
||
|
|
||
|
sharedContext = null;
|
||
|
|
||
|
function WebAudioDevice(sampleRate, channels) {
|
||
|
this.sampleRate = sampleRate;
|
||
|
this.channels = channels;
|
||
|
this.refill = __bind(this.refill, this);
|
||
|
this.context = sharedContext != null ? sharedContext : sharedContext = new AudioContext;
|
||
|
this.deviceSampleRate = this.context.sampleRate;
|
||
|
this.bufferSize = Math.ceil(4096 / (this.deviceSampleRate / this.sampleRate) * this.channels);
|
||
|
this.bufferSize += this.bufferSize % this.channels;
|
||
|
if (this.deviceSampleRate !== this.sampleRate) {
|
||
|
this.resampler = new Resampler(this.sampleRate, this.deviceSampleRate, this.channels, 4096 * this.channels);
|
||
|
}
|
||
|
this.node = this.context[createProcessor](4096, this.channels, this.channels);
|
||
|
this.node.onaudioprocess = this.refill;
|
||
|
this.node.connect(this.context.destination);
|
||
|
}
|
||
|
|
||
|
WebAudioDevice.prototype.refill = function(event) {
|
||
|
var channelCount, channels, data, i, n, outputBuffer, _i, _j, _k, _ref;
|
||
|
outputBuffer = event.outputBuffer;
|
||
|
channelCount = outputBuffer.numberOfChannels;
|
||
|
channels = new Array(channelCount);
|
||
|
for (i = _i = 0; _i < channelCount; i = _i += 1) {
|
||
|
channels[i] = outputBuffer.getChannelData(i);
|
||
|
}
|
||
|
data = new Float32Array(this.bufferSize);
|
||
|
this.emit('refill', data);
|
||
|
if (this.resampler) {
|
||
|
data = this.resampler.resampler(data);
|
||
|
}
|
||
|
for (i = _j = 0, _ref = outputBuffer.length; _j < _ref; i = _j += 1) {
|
||
|
for (n = _k = 0; _k < channelCount; n = _k += 1) {
|
||
|
channels[n][i] = data[i * channelCount + n];
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
WebAudioDevice.prototype.destroy = function() {
|
||
|
return this.node.disconnect(0);
|
||
|
};
|
||
|
|
||
|
WebAudioDevice.prototype.getDeviceTime = function() {
|
||
|
return this.context.currentTime * this.sampleRate;
|
||
|
};
|
||
|
|
||
|
return WebAudioDevice;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
|
||
|
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
},{"../core/events":9,"../device":21,"./resampler":23}],25:[function(_dereq_,module,exports){
|
||
|
var Filter;
|
||
|
|
||
|
Filter = (function() {
|
||
|
function Filter(context, key) {
|
||
|
if (context && key) {
|
||
|
Object.defineProperty(this, 'value', {
|
||
|
get: function() {
|
||
|
return context[key];
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
|
||
|
Filter.prototype.process = function(buffer) {};
|
||
|
|
||
|
return Filter;
|
||
|
|
||
|
})();
|
||
|
|
||
|
module.exports = Filter;
|
||
|
|
||
|
|
||
|
},{}],26:[function(_dereq_,module,exports){
|
||
|
var BalanceFilter, Filter,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Filter = _dereq_('../filter');
|
||
|
|
||
|
BalanceFilter = (function(_super) {
|
||
|
__extends(BalanceFilter, _super);
|
||
|
|
||
|
function BalanceFilter() {
|
||
|
return BalanceFilter.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
BalanceFilter.prototype.process = function(buffer) {
|
||
|
var i, pan, _i, _ref;
|
||
|
if (this.value === 0) {
|
||
|
return;
|
||
|
}
|
||
|
pan = Math.max(-50, Math.min(50, this.value));
|
||
|
for (i = _i = 0, _ref = buffer.length; _i < _ref; i = _i += 2) {
|
||
|
buffer[i] *= Math.min(1, (50 - pan) / 50);
|
||
|
buffer[i + 1] *= Math.min(1, (50 + pan) / 50);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return BalanceFilter;
|
||
|
|
||
|
})(Filter);
|
||
|
|
||
|
module.exports = BalanceFilter;
|
||
|
|
||
|
|
||
|
},{"../filter":25}],27:[function(_dereq_,module,exports){
|
||
|
var Filter, VolumeFilter,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
Filter = _dereq_('../filter');
|
||
|
|
||
|
VolumeFilter = (function(_super) {
|
||
|
__extends(VolumeFilter, _super);
|
||
|
|
||
|
function VolumeFilter() {
|
||
|
return VolumeFilter.__super__.constructor.apply(this, arguments);
|
||
|
}
|
||
|
|
||
|
VolumeFilter.prototype.process = function(buffer) {
|
||
|
var i, vol, _i, _ref;
|
||
|
if (this.value >= 100) {
|
||
|
return;
|
||
|
}
|
||
|
vol = Math.max(0, Math.min(100, this.value)) / 100;
|
||
|
for (i = _i = 0, _ref = buffer.length; _i < _ref; i = _i += 1) {
|
||
|
buffer[i] *= vol;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
return VolumeFilter;
|
||
|
|
||
|
})(Filter);
|
||
|
|
||
|
module.exports = VolumeFilter;
|
||
|
|
||
|
|
||
|
},{"../filter":25}],28:[function(_dereq_,module,exports){
|
||
|
var Asset, AudioDevice, BalanceFilter, EventEmitter, Player, Queue, VolumeFilter,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('./core/events');
|
||
|
|
||
|
Asset = _dereq_('./asset');
|
||
|
|
||
|
VolumeFilter = _dereq_('./filters/volume');
|
||
|
|
||
|
BalanceFilter = _dereq_('./filters/balance');
|
||
|
|
||
|
Queue = _dereq_('./queue');
|
||
|
|
||
|
AudioDevice = _dereq_('./device');
|
||
|
|
||
|
Player = (function(_super) {
|
||
|
__extends(Player, _super);
|
||
|
|
||
|
function Player(asset) {
|
||
|
this.asset = asset;
|
||
|
this.startPlaying = __bind(this.startPlaying, this);
|
||
|
this.playing = false;
|
||
|
this.buffered = 0;
|
||
|
this.currentTime = 0;
|
||
|
this.duration = 0;
|
||
|
this.volume = 100;
|
||
|
this.pan = 0;
|
||
|
this.metadata = {};
|
||
|
this.filters = [new VolumeFilter(this, 'volume'), new BalanceFilter(this, 'pan')];
|
||
|
this.asset.on('buffer', (function(_this) {
|
||
|
return function(buffered) {
|
||
|
_this.buffered = buffered;
|
||
|
return _this.emit('buffer', _this.buffered);
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.on('decodeStart', (function(_this) {
|
||
|
return function() {
|
||
|
_this.queue = new Queue(_this.asset);
|
||
|
return _this.queue.once('ready', _this.startPlaying);
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.on('format', (function(_this) {
|
||
|
return function(format) {
|
||
|
_this.format = format;
|
||
|
return _this.emit('format', _this.format);
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.on('metadata', (function(_this) {
|
||
|
return function(metadata) {
|
||
|
_this.metadata = metadata;
|
||
|
return _this.emit('metadata', _this.metadata);
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.on('duration', (function(_this) {
|
||
|
return function(duration) {
|
||
|
_this.duration = duration;
|
||
|
return _this.emit('duration', _this.duration);
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.on('error', (function(_this) {
|
||
|
return function(error) {
|
||
|
return _this.emit('error', error);
|
||
|
};
|
||
|
})(this));
|
||
|
}
|
||
|
|
||
|
Player.fromURL = function(url) {
|
||
|
return new Player(Asset.fromURL(url));
|
||
|
};
|
||
|
|
||
|
Player.fromFile = function(file) {
|
||
|
return new Player(Asset.fromFile(file));
|
||
|
};
|
||
|
|
||
|
Player.fromBuffer = function(buffer) {
|
||
|
return new Player(Asset.fromBuffer(buffer));
|
||
|
};
|
||
|
|
||
|
Player.prototype.preload = function() {
|
||
|
if (!this.asset) {
|
||
|
return;
|
||
|
}
|
||
|
this.startedPreloading = true;
|
||
|
return this.asset.start(false);
|
||
|
};
|
||
|
|
||
|
Player.prototype.play = function() {
|
||
|
var _ref;
|
||
|
if (this.playing) {
|
||
|
return;
|
||
|
}
|
||
|
if (!this.startedPreloading) {
|
||
|
this.preload();
|
||
|
}
|
||
|
this.playing = true;
|
||
|
return (_ref = this.device) != null ? _ref.start() : void 0;
|
||
|
};
|
||
|
|
||
|
Player.prototype.pause = function() {
|
||
|
var _ref;
|
||
|
if (!this.playing) {
|
||
|
return;
|
||
|
}
|
||
|
this.playing = false;
|
||
|
return (_ref = this.device) != null ? _ref.stop() : void 0;
|
||
|
};
|
||
|
|
||
|
Player.prototype.togglePlayback = function() {
|
||
|
if (this.playing) {
|
||
|
return this.pause();
|
||
|
} else {
|
||
|
return this.play();
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Player.prototype.stop = function() {
|
||
|
var _ref;
|
||
|
this.pause();
|
||
|
this.asset.stop();
|
||
|
return (_ref = this.device) != null ? _ref.destroy() : void 0;
|
||
|
};
|
||
|
|
||
|
Player.prototype.seek = function(timestamp) {
|
||
|
var _ref;
|
||
|
if ((_ref = this.device) != null) {
|
||
|
_ref.stop();
|
||
|
}
|
||
|
this.queue.once('ready', (function(_this) {
|
||
|
return function() {
|
||
|
var _ref1, _ref2;
|
||
|
if ((_ref1 = _this.device) != null) {
|
||
|
_ref1.seek(_this.currentTime);
|
||
|
}
|
||
|
if (_this.playing) {
|
||
|
return (_ref2 = _this.device) != null ? _ref2.start() : void 0;
|
||
|
}
|
||
|
};
|
||
|
})(this));
|
||
|
timestamp = (timestamp / 1000) * this.format.sampleRate;
|
||
|
timestamp = this.asset.decoder.seek(timestamp);
|
||
|
this.currentTime = timestamp / this.format.sampleRate * 1000 | 0;
|
||
|
this.queue.reset();
|
||
|
return this.currentTime;
|
||
|
};
|
||
|
|
||
|
Player.prototype.startPlaying = function() {
|
||
|
var frame, frameOffset;
|
||
|
frame = this.queue.read();
|
||
|
frameOffset = 0;
|
||
|
this.device = new AudioDevice(this.format.sampleRate, this.format.channelsPerFrame);
|
||
|
this.device.on('timeUpdate', (function(_this) {
|
||
|
return function(currentTime) {
|
||
|
_this.currentTime = currentTime;
|
||
|
return _this.emit('progress', _this.currentTime);
|
||
|
};
|
||
|
})(this));
|
||
|
this.refill = (function(_this) {
|
||
|
return function(buffer) {
|
||
|
var bufferOffset, filter, i, max, _i, _j, _len, _ref;
|
||
|
if (!_this.playing) {
|
||
|
return;
|
||
|
}
|
||
|
if (!frame) {
|
||
|
frame = _this.queue.read();
|
||
|
frameOffset = 0;
|
||
|
}
|
||
|
bufferOffset = 0;
|
||
|
while (frame && bufferOffset < buffer.length) {
|
||
|
max = Math.min(frame.length - frameOffset, buffer.length - bufferOffset);
|
||
|
for (i = _i = 0; _i < max; i = _i += 1) {
|
||
|
buffer[bufferOffset++] = frame[frameOffset++];
|
||
|
}
|
||
|
if (frameOffset === frame.length) {
|
||
|
frame = _this.queue.read();
|
||
|
frameOffset = 0;
|
||
|
}
|
||
|
}
|
||
|
_ref = _this.filters;
|
||
|
for (_j = 0, _len = _ref.length; _j < _len; _j++) {
|
||
|
filter = _ref[_j];
|
||
|
filter.process(buffer);
|
||
|
}
|
||
|
if (!frame) {
|
||
|
if (_this.queue.ended) {
|
||
|
_this.currentTime = _this.duration;
|
||
|
_this.emit('progress', _this.currentTime);
|
||
|
_this.emit('end');
|
||
|
_this.stop();
|
||
|
} else {
|
||
|
_this.device.stop();
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
})(this);
|
||
|
this.device.on('refill', this.refill);
|
||
|
if (this.playing) {
|
||
|
this.device.start();
|
||
|
}
|
||
|
return this.emit('ready');
|
||
|
};
|
||
|
|
||
|
return Player;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = Player;
|
||
|
|
||
|
|
||
|
},{"./asset":2,"./core/events":9,"./device":21,"./filters/balance":26,"./filters/volume":27,"./queue":29}],29:[function(_dereq_,module,exports){
|
||
|
var EventEmitter, Queue,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('./core/events');
|
||
|
|
||
|
Queue = (function(_super) {
|
||
|
__extends(Queue, _super);
|
||
|
|
||
|
function Queue(asset) {
|
||
|
this.asset = asset;
|
||
|
this.write = __bind(this.write, this);
|
||
|
this.readyMark = 64;
|
||
|
this.finished = false;
|
||
|
this.buffering = true;
|
||
|
this.ended = false;
|
||
|
this.buffers = [];
|
||
|
this.asset.on('data', this.write);
|
||
|
this.asset.on('end', (function(_this) {
|
||
|
return function() {
|
||
|
return _this.ended = true;
|
||
|
};
|
||
|
})(this));
|
||
|
this.asset.decodePacket();
|
||
|
}
|
||
|
|
||
|
Queue.prototype.write = function(buffer) {
|
||
|
if (buffer) {
|
||
|
this.buffers.push(buffer);
|
||
|
}
|
||
|
if (this.buffering) {
|
||
|
if (this.buffers.length >= this.readyMark || this.ended) {
|
||
|
this.buffering = false;
|
||
|
return this.emit('ready');
|
||
|
} else {
|
||
|
return this.asset.decodePacket();
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Queue.prototype.read = function() {
|
||
|
if (this.buffers.length === 0) {
|
||
|
return null;
|
||
|
}
|
||
|
this.asset.decodePacket();
|
||
|
return this.buffers.shift();
|
||
|
};
|
||
|
|
||
|
Queue.prototype.reset = function() {
|
||
|
this.buffers.length = 0;
|
||
|
this.buffering = true;
|
||
|
return this.asset.decodePacket();
|
||
|
};
|
||
|
|
||
|
return Queue;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = Queue;
|
||
|
|
||
|
|
||
|
},{"./core/events":9}],30:[function(_dereq_,module,exports){
|
||
|
var AVBuffer, EventEmitter, FileSource,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('../../core/events');
|
||
|
|
||
|
AVBuffer = _dereq_('../../core/buffer');
|
||
|
|
||
|
FileSource = (function(_super) {
|
||
|
__extends(FileSource, _super);
|
||
|
|
||
|
function FileSource(file) {
|
||
|
this.file = file;
|
||
|
if (typeof FileReader === "undefined" || FileReader === null) {
|
||
|
return this.emit('error', 'This browser does not have FileReader support.');
|
||
|
}
|
||
|
this.offset = 0;
|
||
|
this.length = this.file.size;
|
||
|
this.chunkSize = 1 << 20;
|
||
|
this.file[this.slice = 'slice'] || this.file[this.slice = 'webkitSlice'] || this.file[this.slice = 'mozSlice'];
|
||
|
}
|
||
|
|
||
|
FileSource.prototype.start = function() {
|
||
|
if (this.reader) {
|
||
|
if (!this.active) {
|
||
|
return this.loop();
|
||
|
}
|
||
|
}
|
||
|
this.reader = new FileReader;
|
||
|
this.active = true;
|
||
|
this.reader.onload = (function(_this) {
|
||
|
return function(e) {
|
||
|
var buf;
|
||
|
buf = new AVBuffer(new Uint8Array(e.target.result));
|
||
|
_this.offset += buf.length;
|
||
|
_this.emit('data', buf);
|
||
|
_this.active = false;
|
||
|
if (_this.offset < _this.length) {
|
||
|
return _this.loop();
|
||
|
}
|
||
|
};
|
||
|
})(this);
|
||
|
this.reader.onloadend = (function(_this) {
|
||
|
return function() {
|
||
|
if (_this.offset === _this.length) {
|
||
|
_this.emit('end');
|
||
|
return _this.reader = null;
|
||
|
}
|
||
|
};
|
||
|
})(this);
|
||
|
this.reader.onerror = (function(_this) {
|
||
|
return function(e) {
|
||
|
return _this.emit('error', e);
|
||
|
};
|
||
|
})(this);
|
||
|
this.reader.onprogress = (function(_this) {
|
||
|
return function(e) {
|
||
|
return _this.emit('progress', (_this.offset + e.loaded) / _this.length * 100);
|
||
|
};
|
||
|
})(this);
|
||
|
return this.loop();
|
||
|
};
|
||
|
|
||
|
FileSource.prototype.loop = function() {
|
||
|
var blob, endPos;
|
||
|
this.active = true;
|
||
|
endPos = Math.min(this.offset + this.chunkSize, this.length);
|
||
|
blob = this.file[this.slice](this.offset, endPos);
|
||
|
return this.reader.readAsArrayBuffer(blob);
|
||
|
};
|
||
|
|
||
|
FileSource.prototype.pause = function() {
|
||
|
var _ref;
|
||
|
this.active = false;
|
||
|
try {
|
||
|
return (_ref = this.reader) != null ? _ref.abort() : void 0;
|
||
|
} catch (_error) {}
|
||
|
};
|
||
|
|
||
|
FileSource.prototype.reset = function() {
|
||
|
this.pause();
|
||
|
return this.offset = 0;
|
||
|
};
|
||
|
|
||
|
return FileSource;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = FileSource;
|
||
|
|
||
|
|
||
|
},{"../../core/buffer":7,"../../core/events":9}],31:[function(_dereq_,module,exports){
|
||
|
var AVBuffer, EventEmitter, HTTPSource,
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('../../core/events');
|
||
|
|
||
|
AVBuffer = _dereq_('../../core/buffer');
|
||
|
|
||
|
HTTPSource = (function(_super) {
|
||
|
__extends(HTTPSource, _super);
|
||
|
|
||
|
function HTTPSource(url) {
|
||
|
this.url = url;
|
||
|
this.chunkSize = 1 << 20;
|
||
|
this.inflight = false;
|
||
|
this.reset();
|
||
|
}
|
||
|
|
||
|
HTTPSource.prototype.start = function() {
|
||
|
if (this.length) {
|
||
|
if (!this.inflight) {
|
||
|
return this.loop();
|
||
|
}
|
||
|
}
|
||
|
this.inflight = true;
|
||
|
this.xhr = new XMLHttpRequest();
|
||
|
this.xhr.onload = (function(_this) {
|
||
|
return function(event) {
|
||
|
_this.length = parseInt(_this.xhr.getResponseHeader("Content-Length"));
|
||
|
_this.inflight = false;
|
||
|
return _this.loop();
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.onerror = (function(_this) {
|
||
|
return function(err) {
|
||
|
_this.pause();
|
||
|
return _this.emit('error', err);
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.onabort = (function(_this) {
|
||
|
return function(event) {
|
||
|
return _this.inflight = false;
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.open("HEAD", this.url, true);
|
||
|
return this.xhr.send(null);
|
||
|
};
|
||
|
|
||
|
HTTPSource.prototype.loop = function() {
|
||
|
var endPos;
|
||
|
if (this.inflight || !this.length) {
|
||
|
return this.emit('error', 'Something is wrong in HTTPSource.loop');
|
||
|
}
|
||
|
this.inflight = true;
|
||
|
this.xhr = new XMLHttpRequest();
|
||
|
this.xhr.onload = (function(_this) {
|
||
|
return function(event) {
|
||
|
var buf, buffer, i, txt, _i, _ref;
|
||
|
if (_this.xhr.response) {
|
||
|
buf = new Uint8Array(_this.xhr.response);
|
||
|
} else {
|
||
|
txt = _this.xhr.responseText;
|
||
|
buf = new Uint8Array(txt.length);
|
||
|
for (i = _i = 0, _ref = txt.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
|
||
|
buf[i] = txt.charCodeAt(i) & 0xff;
|
||
|
}
|
||
|
}
|
||
|
buffer = new AVBuffer(buf);
|
||
|
_this.offset += buffer.length;
|
||
|
_this.emit('data', buffer);
|
||
|
if (_this.offset >= _this.length) {
|
||
|
_this.emit('end');
|
||
|
}
|
||
|
_this.inflight = false;
|
||
|
if (!(_this.offset >= _this.length)) {
|
||
|
return _this.loop();
|
||
|
}
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.onprogress = (function(_this) {
|
||
|
return function(event) {
|
||
|
return _this.emit('progress', (_this.offset + event.loaded) / _this.length * 100);
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.onerror = (function(_this) {
|
||
|
return function(err) {
|
||
|
_this.emit('error', err);
|
||
|
return _this.pause();
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.onabort = (function(_this) {
|
||
|
return function(event) {
|
||
|
return _this.inflight = false;
|
||
|
};
|
||
|
})(this);
|
||
|
this.xhr.open("GET", this.url, true);
|
||
|
this.xhr.responseType = "arraybuffer";
|
||
|
endPos = Math.min(this.offset + this.chunkSize, this.length);
|
||
|
this.xhr.setRequestHeader("Range", "bytes=" + this.offset + "-" + endPos);
|
||
|
this.xhr.overrideMimeType('text/plain; charset=x-user-defined');
|
||
|
return this.xhr.send(null);
|
||
|
};
|
||
|
|
||
|
HTTPSource.prototype.pause = function() {
|
||
|
var _ref;
|
||
|
this.inflight = false;
|
||
|
return (_ref = this.xhr) != null ? _ref.abort() : void 0;
|
||
|
};
|
||
|
|
||
|
HTTPSource.prototype.reset = function() {
|
||
|
this.pause();
|
||
|
return this.offset = 0;
|
||
|
};
|
||
|
|
||
|
return HTTPSource;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = HTTPSource;
|
||
|
|
||
|
|
||
|
},{"../../core/buffer":7,"../../core/events":9}],32:[function(_dereq_,module,exports){
|
||
|
(function (global){
|
||
|
var AVBuffer, BufferList, BufferSource, EventEmitter,
|
||
|
__bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
|
||
|
__hasProp = {}.hasOwnProperty,
|
||
|
__extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
|
||
|
|
||
|
EventEmitter = _dereq_('../core/events');
|
||
|
|
||
|
BufferList = _dereq_('../core/bufferlist');
|
||
|
|
||
|
AVBuffer = _dereq_('../core/buffer');
|
||
|
|
||
|
BufferSource = (function(_super) {
|
||
|
var clearImmediate, setImmediate;
|
||
|
|
||
|
__extends(BufferSource, _super);
|
||
|
|
||
|
function BufferSource(input) {
|
||
|
this.loop = __bind(this.loop, this);
|
||
|
if (input instanceof AV.BufferList) {
|
||
|
this.list = input;
|
||
|
} else {
|
||
|
this.list = new BufferList;
|
||
|
this.list.append(new AVBuffer(input));
|
||
|
}
|
||
|
this.paused = true;
|
||
|
}
|
||
|
|
||
|
setImmediate = global.setImmediate || function(fn) {
|
||
|
return global.setTimeout(fn, 0);
|
||
|
};
|
||
|
|
||
|
clearImmediate = global.clearImmediate || function(timer) {
|
||
|
return global.clearTimeout(timer);
|
||
|
};
|
||
|
|
||
|
BufferSource.prototype.start = function() {
|
||
|
this.paused = false;
|
||
|
return this._timer = setImmediate(this.loop);
|
||
|
};
|
||
|
|
||
|
BufferSource.prototype.loop = function() {
|
||
|
this.emit('progress', (this.list.numBuffers - this.list.availableBuffers + 1) / this.list.numBuffers * 100 | 0);
|
||
|
this.emit('data', this.list.first);
|
||
|
if (this.list.advance()) {
|
||
|
return setImmediate(this.loop);
|
||
|
} else {
|
||
|
return this.emit('end');
|
||
|
}
|
||
|
};
|
||
|
|
||
|
BufferSource.prototype.pause = function() {
|
||
|
clearImmediate(this._timer);
|
||
|
return this.paused = true;
|
||
|
};
|
||
|
|
||
|
BufferSource.prototype.reset = function() {
|
||
|
this.pause();
|
||
|
return this.list.rewind();
|
||
|
};
|
||
|
|
||
|
return BufferSource;
|
||
|
|
||
|
})(EventEmitter);
|
||
|
|
||
|
module.exports = BufferSource;
|
||
|
|
||
|
|
||
|
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
},{"../core/buffer":7,"../core/bufferlist":8,"../core/events":9}]},{},[1])
|
||
|
|
||
|
(1)
|
||
|
});
|
||
|
|
||
|
//# sourceMappingURL=aurora.js.map
|