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player2.html
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<html>
<head>
<title>Video Chat</title>
<script>
/*! binary.js build:0.2.2, development. Copyright(c) 2012 Eric Zhang <eric@ericzhang.com> MIT Licensed */
(function(exports){
/*! binarypack.js build:0.0.9, production. Copyright(c) 2012 Eric Zhang <eric@ericzhang.com> MIT Licensed */(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);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.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(require,module,exports){
var BufferBuilder = require('./bufferbuilder').BufferBuilder;
var binaryFeatures = require('./bufferbuilder').binaryFeatures;
var BinaryPack = {
unpack: function(data){
var unpacker = new Unpacker(data);
return unpacker.unpack();
},
pack: function(data){
var packer = new Packer();
packer.pack(data);
var buffer = packer.getBuffer();
return buffer;
}
};
module.exports = BinaryPack;
function Unpacker (data){
// Data is ArrayBuffer
this.index = 0;
this.dataBuffer = data;
this.dataView = new Uint8Array(this.dataBuffer);
this.length = this.dataBuffer.byteLength;
}
Unpacker.prototype.unpack = function(){
var type = this.unpack_uint8();
if (type < 0x80){
var positive_fixnum = type;
return positive_fixnum;
} else if ((type ^ 0xe0) < 0x20){
var negative_fixnum = (type ^ 0xe0) - 0x20;
return negative_fixnum;
}
var size;
if ((size = type ^ 0xa0) <= 0x0f){
return this.unpack_raw(size);
} else if ((size = type ^ 0xb0) <= 0x0f){
return this.unpack_string(size);
} else if ((size = type ^ 0x90) <= 0x0f){
return this.unpack_array(size);
} else if ((size = type ^ 0x80) <= 0x0f){
return this.unpack_map(size);
}
switch(type){
case 0xc0:
return null;
case 0xc1:
return undefined;
case 0xc2:
return false;
case 0xc3:
return true;
case 0xca:
return this.unpack_float();
case 0xcb:
return this.unpack_double();
case 0xcc:
return this.unpack_uint8();
case 0xcd:
return this.unpack_uint16();
case 0xce:
return this.unpack_uint32();
case 0xcf:
return this.unpack_uint64();
case 0xd0:
return this.unpack_int8();
case 0xd1:
return this.unpack_int16();
case 0xd2:
return this.unpack_int32();
case 0xd3:
return this.unpack_int64();
case 0xd4:
return undefined;
case 0xd5:
return undefined;
case 0xd6:
return undefined;
case 0xd7:
return undefined;
case 0xd8:
size = this.unpack_uint16();
return this.unpack_string(size);
case 0xd9:
size = this.unpack_uint32();
return this.unpack_string(size);
case 0xda:
size = this.unpack_uint16();
return this.unpack_raw(size);
case 0xdb:
size = this.unpack_uint32();
return this.unpack_raw(size);
case 0xdc:
size = this.unpack_uint16();
return this.unpack_array(size);
case 0xdd:
size = this.unpack_uint32();
return this.unpack_array(size);
case 0xde:
size = this.unpack_uint16();
return this.unpack_map(size);
case 0xdf:
size = this.unpack_uint32();
return this.unpack_map(size);
}
}
Unpacker.prototype.unpack_uint8 = function(){
var byte = this.dataView[this.index] & 0xff;
this.index++;
return byte;
};
Unpacker.prototype.unpack_uint16 = function(){
var bytes = this.read(2);
var uint16 =
((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);
this.index += 2;
return uint16;
}
Unpacker.prototype.unpack_uint32 = function(){
var bytes = this.read(4);
var uint32 =
((bytes[0] * 256 +
bytes[1]) * 256 +
bytes[2]) * 256 +
bytes[3];
this.index += 4;
return uint32;
}
Unpacker.prototype.unpack_uint64 = function(){
var bytes = this.read(8);
var uint64 =
((((((bytes[0] * 256 +
bytes[1]) * 256 +
bytes[2]) * 256 +
bytes[3]) * 256 +
bytes[4]) * 256 +
bytes[5]) * 256 +
bytes[6]) * 256 +
bytes[7];
this.index += 8;
return uint64;
}
Unpacker.prototype.unpack_int8 = function(){
var uint8 = this.unpack_uint8();
return (uint8 < 0x80 ) ? uint8 : uint8 - (1 << 8);
};
Unpacker.prototype.unpack_int16 = function(){
var uint16 = this.unpack_uint16();
return (uint16 < 0x8000 ) ? uint16 : uint16 - (1 << 16);
}
Unpacker.prototype.unpack_int32 = function(){
var uint32 = this.unpack_uint32();
return (uint32 < Math.pow(2, 31) ) ? uint32 :
uint32 - Math.pow(2, 32);
}
Unpacker.prototype.unpack_int64 = function(){
var uint64 = this.unpack_uint64();
return (uint64 < Math.pow(2, 63) ) ? uint64 :
uint64 - Math.pow(2, 64);
}
Unpacker.prototype.unpack_raw = function(size){
if ( this.length < this.index + size){
throw new Error('BinaryPackFailure: index is out of range'
+ ' ' + this.index + ' ' + size + ' ' + this.length);
}
var buf = this.dataBuffer.slice(this.index, this.index + size);
this.index += size;
//buf = util.bufferToString(buf);
return buf;
}
Unpacker.prototype.unpack_string = function(size){
var bytes = this.read(size);
var i = 0, str = '', c, code;
while(i < size){
c = bytes[i];
if ( c < 128){
str += String.fromCharCode(c);
i++;
} else if ((c ^ 0xc0) < 32){
code = ((c ^ 0xc0) << 6) | (bytes[i+1] & 63);
str += String.fromCharCode(code);
i += 2;
} else {
code = ((c & 15) << 12) | ((bytes[i+1] & 63) << 6) |
(bytes[i+2] & 63);
str += String.fromCharCode(code);
i += 3;
}
}
this.index += size;
return str;
}
Unpacker.prototype.unpack_array = function(size){
var objects = new Array(size);
for(var i = 0; i < size ; i++){
objects[i] = this.unpack();
}
return objects;
}
Unpacker.prototype.unpack_map = function(size){
var map = {};
for(var i = 0; i < size ; i++){
var key = this.unpack();
var value = this.unpack();
map[key] = value;
}
return map;
}
Unpacker.prototype.unpack_float = function(){
var uint32 = this.unpack_uint32();
var sign = uint32 >> 31;
var exp = ((uint32 >> 23) & 0xff) - 127;
var fraction = ( uint32 & 0x7fffff ) | 0x800000;
return (sign == 0 ? 1 : -1) *
fraction * Math.pow(2, exp - 23);
}
Unpacker.prototype.unpack_double = function(){
var h32 = this.unpack_uint32();
var l32 = this.unpack_uint32();
var sign = h32 >> 31;
var exp = ((h32 >> 20) & 0x7ff) - 1023;
var hfrac = ( h32 & 0xfffff ) | 0x100000;
var frac = hfrac * Math.pow(2, exp - 20) +
l32 * Math.pow(2, exp - 52);
return (sign == 0 ? 1 : -1) * frac;
}
Unpacker.prototype.read = function(length){
var j = this.index;
if (j + length <= this.length) {
return this.dataView.subarray(j, j + length);
} else {
throw new Error('BinaryPackFailure: read index out of range');
}
}
function Packer(){
this.bufferBuilder = new BufferBuilder();
}
Packer.prototype.getBuffer = function(){
return this.bufferBuilder.getBuffer();
}
Packer.prototype.pack = function(value){
var type = typeof(value);
if (type == 'string'){
this.pack_string(value);
} else if (type == 'number'){
if (Math.floor(value) === value){
this.pack_integer(value);
} else{
this.pack_double(value);
}
} else if (type == 'boolean'){
if (value === true){
this.bufferBuilder.append(0xc3);
} else if (value === false){
this.bufferBuilder.append(0xc2);
}
} else if (type == 'undefined'){
this.bufferBuilder.append(0xc0);
} else if (type == 'object'){
if (value === null){
this.bufferBuilder.append(0xc0);
} else {
var constructor = value.constructor;
if (constructor == Array){
this.pack_array(value);
} else if (constructor == Blob || constructor == File) {
this.pack_bin(value);
} else if (constructor == ArrayBuffer) {
if(binaryFeatures.useArrayBufferView) {
this.pack_bin(new Uint8Array(value));
} else {
this.pack_bin(value);
}
} else if ('BYTES_PER_ELEMENT' in value){
if(binaryFeatures.useArrayBufferView) {
this.pack_bin(new Uint8Array(value.buffer));
} else {
this.pack_bin(value.buffer);
}
} else if (constructor == Object){
this.pack_object(value);
} else if (constructor == Date){
this.pack_string(value.toString());
} else if (typeof value.toBinaryPack == 'function'){
this.bufferBuilder.append(value.toBinaryPack());
} else {
throw new Error('Type "' + constructor.toString() + '" not yet supported');
}
}
} else {
throw new Error('Type "' + type + '" not yet supported');
}
this.bufferBuilder.flush();
}
Packer.prototype.pack_bin = function(blob){
var length = blob.length || blob.byteLength || blob.size;
if (length <= 0x0f){
this.pack_uint8(0xa0 + length);
} else if (length <= 0xffff){
this.bufferBuilder.append(0xda) ;
this.pack_uint16(length);
} else if (length <= 0xffffffff){
this.bufferBuilder.append(0xdb);
this.pack_uint32(length);
} else{
throw new Error('Invalid length');
}
this.bufferBuilder.append(blob);
}
Packer.prototype.pack_string = function(str){
var length = utf8Length(str);
if (length <= 0x0f){
this.pack_uint8(0xb0 + length);
} else if (length <= 0xffff){
this.bufferBuilder.append(0xd8) ;
this.pack_uint16(length);
} else if (length <= 0xffffffff){
this.bufferBuilder.append(0xd9);
this.pack_uint32(length);
} else{
throw new Error('Invalid length');
}
this.bufferBuilder.append(str);
}
Packer.prototype.pack_array = function(ary){
var length = ary.length;
if (length <= 0x0f){
this.pack_uint8(0x90 + length);
} else if (length <= 0xffff){
this.bufferBuilder.append(0xdc)
this.pack_uint16(length);
} else if (length <= 0xffffffff){
this.bufferBuilder.append(0xdd);
this.pack_uint32(length);
} else{
throw new Error('Invalid length');
}
for(var i = 0; i < length ; i++){
this.pack(ary[i]);
}
}
Packer.prototype.pack_integer = function(num){
if ( -0x20 <= num && num <= 0x7f){
this.bufferBuilder.append(num & 0xff);
} else if (0x00 <= num && num <= 0xff){
this.bufferBuilder.append(0xcc);
this.pack_uint8(num);
} else if (-0x80 <= num && num <= 0x7f){
this.bufferBuilder.append(0xd0);
this.pack_int8(num);
} else if ( 0x0000 <= num && num <= 0xffff){
this.bufferBuilder.append(0xcd);
this.pack_uint16(num);
} else if (-0x8000 <= num && num <= 0x7fff){
this.bufferBuilder.append(0xd1);
this.pack_int16(num);
} else if ( 0x00000000 <= num && num <= 0xffffffff){
this.bufferBuilder.append(0xce);
this.pack_uint32(num);
} else if (-0x80000000 <= num && num <= 0x7fffffff){
this.bufferBuilder.append(0xd2);
this.pack_int32(num);
} else if (-0x8000000000000000 <= num && num <= 0x7FFFFFFFFFFFFFFF){
this.bufferBuilder.append(0xd3);
this.pack_int64(num);
} else if (0x0000000000000000 <= num && num <= 0xFFFFFFFFFFFFFFFF){
this.bufferBuilder.append(0xcf);
this.pack_uint64(num);
} else{
throw new Error('Invalid integer');
}
}
Packer.prototype.pack_double = function(num){
var sign = 0;
if (num < 0){
sign = 1;
num = -num;
}
var exp = Math.floor(Math.log(num) / Math.LN2);
var frac0 = num / Math.pow(2, exp) - 1;
var frac1 = Math.floor(frac0 * Math.pow(2, 52));
var b32 = Math.pow(2, 32);
var h32 = (sign << 31) | ((exp+1023) << 20) |
(frac1 / b32) & 0x0fffff;
var l32 = frac1 % b32;
this.bufferBuilder.append(0xcb);
this.pack_int32(h32);
this.pack_int32(l32);
}
Packer.prototype.pack_object = function(obj){
var keys = Object.keys(obj);
var length = keys.length;
if (length <= 0x0f){
this.pack_uint8(0x80 + length);
} else if (length <= 0xffff){
this.bufferBuilder.append(0xde);
this.pack_uint16(length);
} else if (length <= 0xffffffff){
this.bufferBuilder.append(0xdf);
this.pack_uint32(length);
} else{
throw new Error('Invalid length');
}
for(var prop in obj){
if (obj.hasOwnProperty(prop)){
this.pack(prop);
this.pack(obj[prop]);
}
}
}
Packer.prototype.pack_uint8 = function(num){
this.bufferBuilder.append(num);
}
Packer.prototype.pack_uint16 = function(num){
this.bufferBuilder.append(num >> 8);
this.bufferBuilder.append(num & 0xff);
}
Packer.prototype.pack_uint32 = function(num){
var n = num & 0xffffffff;
this.bufferBuilder.append((n & 0xff000000) >>> 24);
this.bufferBuilder.append((n & 0x00ff0000) >>> 16);
this.bufferBuilder.append((n & 0x0000ff00) >>> 8);
this.bufferBuilder.append((n & 0x000000ff));
}
Packer.prototype.pack_uint64 = function(num){
var high = num / Math.pow(2, 32);
var low = num % Math.pow(2, 32);
this.bufferBuilder.append((high & 0xff000000) >>> 24);
this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
this.bufferBuilder.append((high & 0x000000ff));
this.bufferBuilder.append((low & 0xff000000) >>> 24);
this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
this.bufferBuilder.append((low & 0x000000ff));
}
Packer.prototype.pack_int8 = function(num){
this.bufferBuilder.append(num & 0xff);
}
Packer.prototype.pack_int16 = function(num){
this.bufferBuilder.append((num & 0xff00) >> 8);
this.bufferBuilder.append(num & 0xff);
}
Packer.prototype.pack_int32 = function(num){
this.bufferBuilder.append((num >>> 24) & 0xff);
this.bufferBuilder.append((num & 0x00ff0000) >>> 16);
this.bufferBuilder.append((num & 0x0000ff00) >>> 8);
this.bufferBuilder.append((num & 0x000000ff));
}
Packer.prototype.pack_int64 = function(num){
var high = Math.floor(num / Math.pow(2, 32));
var low = num % Math.pow(2, 32);
this.bufferBuilder.append((high & 0xff000000) >>> 24);
this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
this.bufferBuilder.append((high & 0x000000ff));
this.bufferBuilder.append((low & 0xff000000) >>> 24);
this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
this.bufferBuilder.append((low & 0x000000ff));
}
function _utf8Replace(m){
var code = m.charCodeAt(0);
if(code <= 0x7ff) return '00';
if(code <= 0xffff) return '000';
if(code <= 0x1fffff) return '0000';
if(code <= 0x3ffffff) return '00000';
return '000000';
}
function utf8Length(str){
if (str.length > 600) {
// Blob method faster for large strings
return (new Blob([str])).size;
} else {
return str.replace(/[^\u0000-\u007F]/g, _utf8Replace).length;
}
}
},{"./bufferbuilder":2}],2:[function(require,module,exports){
var binaryFeatures = {};
binaryFeatures.useBlobBuilder = (function(){
try {
new Blob([]);
return false;
} catch (e) {
return true;
}
})();
binaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function(){
try {
return (new Blob([new Uint8Array([])])).size === 0;
} catch (e) {
return true;
}
})();
module.exports.binaryFeatures = binaryFeatures;
var BlobBuilder = module.exports.BlobBuilder;
if (typeof window != 'undefined') {
BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
}
function BufferBuilder(){
this._pieces = [];
this._parts = [];
}
BufferBuilder.prototype.append = function(data) {
if(typeof data === 'number') {
this._pieces.push(data);
} else {
this.flush();
this._parts.push(data);
}
};
BufferBuilder.prototype.flush = function() {
if (this._pieces.length > 0) {
var buf = new Uint8Array(this._pieces);
if(!binaryFeatures.useArrayBufferView) {
buf = buf.buffer;
}
this._parts.push(buf);
this._pieces = [];
}
};
BufferBuilder.prototype.getBuffer = function() {
this.flush();
if(binaryFeatures.useBlobBuilder) {
var builder = new BlobBuilder();
for(var i = 0, ii = this._parts.length; i < ii; i++) {
builder.append(this._parts[i]);
}
return builder.getBlob();
} else {
return new Blob(this._parts);
}
};
module.exports.BufferBuilder = BufferBuilder;
},{}],3:[function(require,module,exports){
var BufferBuilderExports = require('./bufferbuilder');
window.BufferBuilder = BufferBuilderExports.BufferBuilder;
window.binaryFeatures = BufferBuilderExports.binaryFeatures;
window.BlobBuilder = BufferBuilderExports.BlobBuilder;
window.BinaryPack = require('./binarypack');
},{"./binarypack":1,"./bufferbuilder":2}]},{},[3]);
/**
* Light EventEmitter. Ported from Node.js/events.js
* Eric Zhang
*/
/**
* EventEmitter class
* Creates an object with event registering and firing methods
*/
function EventEmitter() {
// Initialise required storage variables
this._events = {};
}
var isArray = Array.isArray;
EventEmitter.prototype.addListener = function(type, listener, scope, once) {
if ('function' !== typeof listener) {
throw new Error('addListener only takes instances of Function');
}
// To avoid recursion in the case that type == "newListeners"! Before
// adding it to the listeners, first emit "newListeners".
this.emit('newListener', type, typeof listener.listener === 'function' ?
listener.listener : listener);
if (!this._events[type]) {
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
} else if (isArray(this._events[type])) {
// If we've already got an array, just append.
this._events[type].push(listener);
} else {
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
}
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener, scope) {
if ('function' !== typeof listener) {
throw new Error('.once only takes instances of Function');
}
var self = this;
function g() {
self.removeListener(type, g);
listener.apply(this, arguments);
};
g.listener = listener;
self.on(type, g);
return this;
};
EventEmitter.prototype.removeListener = function(type, listener, scope) {
if ('function' !== typeof listener) {
throw new Error('removeListener only takes instances of Function');
}
// does not use listeners(), so no side effect of creating _events[type]
if (!this._events[type]) return this;
var list = this._events[type];
if (isArray(list)) {
var position = -1;
for (var i = 0, length = list.length; i < length; i++) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener))
{
position = i;
break;
}
}
if (position < 0) return this;
list.splice(position, 1);
if (list.length == 0)
delete this._events[type];
} else if (list === listener ||
(list.listener && list.listener === listener))
{
delete this._events[type];
}
return this;
};
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.removeAllListeners = function(type) {
if (arguments.length === 0) {
this._events = {};
return this;
}
// does not use listeners(), so no side effect of creating _events[type]
if (type && this._events && this._events[type]) this._events[type] = null;
return this;
};
EventEmitter.prototype.listeners = function(type) {
if (!this._events[type]) this._events[type] = [];
if (!isArray(this._events[type])) {
this._events[type] = [this._events[type]];
}
return this._events[type];
};
EventEmitter.prototype.emit = function(type) {
var type = arguments[0];
var handler = this._events[type];
if (!handler) return false;
if (typeof handler == 'function') {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
var l = arguments.length;
var args = new Array(l - 1);
for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
handler.apply(this, args);
}
return true;
} else if (isArray(handler)) {
var l = arguments.length;
var args = new Array(l - 1);
for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
var listeners = handler.slice();
for (var i = 0, l = listeners.length; i < l; i++) {
listeners[i].apply(this, args);
}
return true;
} else {
return false;
}
};
var util = {
inherits: function(ctor, superCtor) {
ctor.super_ = superCtor;
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
},
extend: function(dest, source) {
for(var key in source) {
if(source.hasOwnProperty(key)) {
dest[key] = source[key];
}
}
return dest;
},
pack: BinaryPack.pack,
unpack: BinaryPack.unpack,
setZeroTimeout: (function(global) {
var timeouts = [];
var messageName = 'zero-timeout-message';
// Like setTimeout, but only takes a function argument. There's
// no time argument (always zero) and no arguments (you have to
// use a closure).
function setZeroTimeoutPostMessage(fn) {
timeouts.push(fn);
global.postMessage(messageName, '*');
}
function handleMessage(event) {
if (event.source == global && event.data == messageName) {
if (event.stopPropagation) {
event.stopPropagation();
}
if (timeouts.length) {
timeouts.shift()();
}
}
}
if (global.addEventListener) {
global.addEventListener('message', handleMessage, true);
} else if (global.attachEvent) {
global.attachEvent('onmessage', handleMessage);
}
return setZeroTimeoutPostMessage;
}(this))
};
exports.util = util;
function Stream() {
EventEmitter.call(this);
}
util.inherits(Stream, EventEmitter);
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (this.listeners('error').length === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('end', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('end', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
exports.Stream = Stream;
function BlobReadStream(source, options){
Stream.call(this);
options = util.extend({
readDelay: 0,
paused: false
}, options);
this._source = source;
this._start = 0;
this._readChunkSize = options.chunkSize || source.size;
this._readDelay = options.readDelay;
this.readable = true;
this.paused = options.paused;
this._read();
}
util.inherits(BlobReadStream, Stream);
BlobReadStream.prototype.pause = function(){
this.paused = true;
};
BlobReadStream.prototype.resume = function(){
this.paused = false;
this._read();
};
BlobReadStream.prototype.destroy = function(){
this.readable = false;
clearTimeout(this._timeoutId);
};
BlobReadStream.prototype._read = function(){
var self = this;
function emitReadChunk(){
self._emitReadChunk();
}
var readDelay = this._readDelay;
if (readDelay !== 0){
this._timeoutId = setTimeout(emitReadChunk, readDelay);
} else {
util.setZeroTimeout(emitReadChunk);
}
};
BlobReadStream.prototype._emitReadChunk = function(){
if(this.paused || !this.readable) return;
var chunkSize = Math.min(this._source.size - this._start, this._readChunkSize);
if(chunkSize === 0){
this.readable = false;
this.emit("end");
return;
}
var sourceEnd = this._start + chunkSize;
var chunk = (this._source.slice || this._source.webkitSlice || this._source.mozSlice).call(this._source, this._start, sourceEnd);
this._start = sourceEnd;
this._read();
this.emit("data", chunk);
};
/*
function BlobWriteStream(options){
stream.Stream.call(this);
options = _.extend({
onFull: onFull,
onEnd: function(){},