├── package.json ├── public ├── css │ └── style.css ├── images │ ├── green.png │ └── red.png └── js │ ├── binary.js │ ├── broadcast.js │ ├── index.js │ ├── jquery.min.js │ ├── jsascii.js │ ├── render.js │ ├── renderColor.js │ └── view.js ├── server.js └── views ├── broadcast.ejs ├── index.ejs ├── layout.ejs └── view.ejs /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "author": "Eric Zhang", 3 | "name": "ascam", 4 | "version": "0.0.1", 5 | "repository": { 6 | "type": "git", 7 | "url": "git://github.com/ericz/ascam.git" 8 | }, 9 | "engines": { 10 | "node": "~v0.4.12" 11 | }, 12 | "dependencies": { 13 | "express": "2.5.11", 14 | "binaryjs": "", 15 | "ejs": "" 16 | }, 17 | "devDependencies": {}, 18 | "scripts": { 19 | "start": "node server.js" 20 | }, 21 | "main": "server.js", 22 | "license": "BSD" 23 | } 24 | -------------------------------------------------------------------------------- /public/css/style.css: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ericz/ascam/e4a3fb02513fdb5bb9c4b3bdb4f729ae6c941b28/public/css/style.css -------------------------------------------------------------------------------- /public/images/green.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ericz/ascam/e4a3fb02513fdb5bb9c4b3bdb4f729ae6c941b28/public/images/green.png -------------------------------------------------------------------------------- /public/images/red.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ericz/ascam/e4a3fb02513fdb5bb9c4b3bdb4f729ae6c941b28/public/images/red.png -------------------------------------------------------------------------------- /public/js/binary.js: -------------------------------------------------------------------------------- 1 | /*! binary.js build:0.1.3, development. Copyright(c) 2012 Eric Zhang MIT Licensed */ 2 | (function(exports){ 3 | /*! binarypack.js build:0.0.3, development. Copyright(c) 2012 Eric Zhang MIT Licensed */ 4 | (function(exports){ 5 | exports.binaryFeatures = { 6 | useBlobBuilder: (function(){ 7 | try { 8 | new Blob([]); 9 | return false; 10 | } catch (e) { 11 | return true; 12 | } 13 | })(), 14 | useArrayBufferView: (function(){ 15 | try { 16 | return (new Blob([new Uint8Array([])])).size === 0; 17 | } catch (e) { 18 | return true; 19 | } 20 | })(), 21 | supportsBinaryWebsockets: (function(){ 22 | try { 23 | var wstest = new WebSocket('ws://null'); 24 | wstest.onerror = function(){}; 25 | if (typeof(wstest.binaryType) !== "undefined") { 26 | return true; 27 | } else { 28 | return false; 29 | } 30 | wstest.close(); 31 | wstest = null; 32 | } catch (e) { 33 | return false; 34 | } 35 | })() 36 | }; 37 | 38 | exports.BlobBuilder = window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder; 39 | 40 | function BufferBuilder(){ 41 | this._pieces = []; 42 | this._parts = []; 43 | } 44 | 45 | BufferBuilder.prototype.append = function(data) { 46 | if(typeof data === 'number') { 47 | this._pieces.push(data); 48 | } else { 49 | this._flush(); 50 | this._parts.push(data); 51 | } 52 | }; 53 | 54 | BufferBuilder.prototype._flush = function() { 55 | if (this._pieces.length > 0) { 56 | var buf = new Uint8Array(this._pieces); 57 | if(!binaryFeatures.useArrayBufferView) { 58 | buf = buf.buffer; 59 | } 60 | this._parts.push(buf); 61 | this._pieces = []; 62 | } 63 | }; 64 | 65 | BufferBuilder.prototype.getBuffer = function() { 66 | this._flush(); 67 | if(binaryFeatures.useBlobBuilder) { 68 | var builder = new BlobBuilder(); 69 | for(var i = 0, ii = this._parts.length; i < ii; i++) { 70 | builder.append(this._parts[i]); 71 | } 72 | return builder.getBlob(); 73 | } else { 74 | return new Blob(this._parts); 75 | } 76 | }; 77 | exports.BinaryPack = { 78 | unpack: function(data){ 79 | var unpacker = new Unpacker(data); 80 | return unpacker.unpack(); 81 | }, 82 | pack: function(data){ 83 | var packer = new Packer(); 84 | var buffer = packer.pack(data); 85 | return buffer; 86 | } 87 | }; 88 | 89 | function Unpacker (data){ 90 | // Data is ArrayBuffer 91 | this.index = 0; 92 | this.dataBuffer = data; 93 | this.dataView = new Uint8Array(this.dataBuffer); 94 | this.length = this.dataBuffer.byteLength; 95 | } 96 | 97 | 98 | Unpacker.prototype.unpack = function(){ 99 | var type = this.unpack_uint8(); 100 | if (type < 0x80){ 101 | var positive_fixnum = type; 102 | return positive_fixnum; 103 | } else if ((type ^ 0xe0) < 0x20){ 104 | var negative_fixnum = (type ^ 0xe0) - 0x20; 105 | return negative_fixnum; 106 | } 107 | var size; 108 | if ((size = type ^ 0xa0) <= 0x0f){ 109 | return this.unpack_raw(size); 110 | } else if ((size = type ^ 0xb0) <= 0x0f){ 111 | return this.unpack_string(size); 112 | } else if ((size = type ^ 0x90) <= 0x0f){ 113 | return this.unpack_array(size); 114 | } else if ((size = type ^ 0x80) <= 0x0f){ 115 | return this.unpack_map(size); 116 | } 117 | switch(type){ 118 | case 0xc0: 119 | return null; 120 | case 0xc1: 121 | return undefined; 122 | case 0xc2: 123 | return false; 124 | case 0xc3: 125 | return true; 126 | case 0xca: 127 | return this.unpack_float(); 128 | case 0xcb: 129 | return this.unpack_double(); 130 | case 0xcc: 131 | return this.unpack_uint8(); 132 | case 0xcd: 133 | return this.unpack_uint16(); 134 | case 0xce: 135 | return this.unpack_uint32(); 136 | case 0xcf: 137 | return this.unpack_uint64(); 138 | case 0xd0: 139 | return this.unpack_int8(); 140 | case 0xd1: 141 | return this.unpack_int16(); 142 | case 0xd2: 143 | return this.unpack_int32(); 144 | case 0xd3: 145 | return this.unpack_int64(); 146 | case 0xd4: 147 | return undefined; 148 | case 0xd5: 149 | return undefined; 150 | case 0xd6: 151 | return undefined; 152 | case 0xd7: 153 | return undefined; 154 | case 0xd8: 155 | size = this.unpack_uint16(); 156 | return this.unpack_string(size); 157 | case 0xd9: 158 | size = this.unpack_uint32(); 159 | return this.unpack_string(size); 160 | case 0xda: 161 | size = this.unpack_uint16(); 162 | return this.unpack_raw(size); 163 | case 0xdb: 164 | size = this.unpack_uint32(); 165 | return this.unpack_raw(size); 166 | case 0xdc: 167 | size = this.unpack_uint16(); 168 | return this.unpack_array(size); 169 | case 0xdd: 170 | size = this.unpack_uint32(); 171 | return this.unpack_array(size); 172 | case 0xde: 173 | size = this.unpack_uint16(); 174 | return this.unpack_map(size); 175 | case 0xdf: 176 | size = this.unpack_uint32(); 177 | return this.unpack_map(size); 178 | } 179 | } 180 | 181 | Unpacker.prototype.unpack_uint8 = function(){ 182 | var byte = this.dataView[this.index] & 0xff; 183 | this.index++; 184 | return byte; 185 | }; 186 | 187 | Unpacker.prototype.unpack_uint16 = function(){ 188 | var bytes = this.read(2); 189 | var uint16 = 190 | ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff); 191 | this.index += 2; 192 | return uint16; 193 | } 194 | 195 | Unpacker.prototype.unpack_uint32 = function(){ 196 | var bytes = this.read(4); 197 | var uint32 = 198 | ((bytes[0] * 256 + 199 | bytes[1]) * 256 + 200 | bytes[2]) * 256 + 201 | bytes[3]; 202 | this.index += 4; 203 | return uint32; 204 | } 205 | 206 | Unpacker.prototype.unpack_uint64 = function(){ 207 | var bytes = this.read(8); 208 | var uint64 = 209 | ((((((bytes[0] * 256 + 210 | bytes[1]) * 256 + 211 | bytes[2]) * 256 + 212 | bytes[3]) * 256 + 213 | bytes[4]) * 256 + 214 | bytes[5]) * 256 + 215 | bytes[6]) * 256 + 216 | bytes[7]; 217 | this.index += 8; 218 | return uint64; 219 | } 220 | 221 | 222 | Unpacker.prototype.unpack_int8 = function(){ 223 | var uint8 = this.unpack_uint8(); 224 | return (uint8 < 0x80 ) ? uint8 : uint8 - (1 << 8); 225 | }; 226 | 227 | Unpacker.prototype.unpack_int16 = function(){ 228 | var uint16 = this.unpack_uint16(); 229 | return (uint16 < 0x8000 ) ? uint16 : uint16 - (1 << 16); 230 | } 231 | 232 | Unpacker.prototype.unpack_int32 = function(){ 233 | var uint32 = this.unpack_uint32(); 234 | return (uint32 < Math.pow(2, 31) ) ? uint32 : 235 | uint32 - Math.pow(2, 32); 236 | } 237 | 238 | Unpacker.prototype.unpack_int64 = function(){ 239 | var uint64 = this.unpack_uint64(); 240 | return (uint64 < Math.pow(2, 63) ) ? uint64 : 241 | uint64 - Math.pow(2, 64); 242 | } 243 | 244 | Unpacker.prototype.unpack_raw = function(size){ 245 | if ( this.length < this.index + size){ 246 | throw new Error('BinaryPackFailure: index is out of range' 247 | + ' ' + this.index + ' ' + size + ' ' + this.length); 248 | } 249 | var buf = this.dataBuffer.slice(this.index, this.index + size); 250 | this.index += size; 251 | 252 | //buf = util.bufferToString(buf); 253 | 254 | return buf; 255 | } 256 | 257 | Unpacker.prototype.unpack_string = function(size){ 258 | var bytes = this.read(size); 259 | var i = 0, str = '', c, code; 260 | while(i < size){ 261 | c = bytes[i]; 262 | if ( c < 128){ 263 | str += String.fromCharCode(c); 264 | i++; 265 | } else if ((c ^ 0xc0) < 32){ 266 | code = ((c ^ 0xc0) << 6) | (bytes[i+1] & 63); 267 | str += String.fromCharCode(code); 268 | i += 2; 269 | } else { 270 | code = ((c & 15) << 12) | ((bytes[i+1] & 63) << 6) | 271 | (bytes[i+2] & 63); 272 | str += String.fromCharCode(code); 273 | i += 3; 274 | } 275 | } 276 | this.index += size; 277 | return str; 278 | } 279 | 280 | Unpacker.prototype.unpack_array = function(size){ 281 | var objects = new Array(size); 282 | for(var i = 0; i < size ; i++){ 283 | objects[i] = this.unpack(); 284 | } 285 | return objects; 286 | } 287 | 288 | Unpacker.prototype.unpack_map = function(size){ 289 | var map = {}; 290 | for(var i = 0; i < size ; i++){ 291 | var key = this.unpack(); 292 | var value = this.unpack(); 293 | map[key] = value; 294 | } 295 | return map; 296 | } 297 | 298 | Unpacker.prototype.unpack_float = function(){ 299 | var uint32 = this.unpack_uint32(); 300 | var sign = uint32 >> 31; 301 | var exp = ((uint32 >> 23) & 0xff) - 127; 302 | var fraction = ( uint32 & 0x7fffff ) | 0x800000; 303 | return (sign == 0 ? 1 : -1) * 304 | fraction * Math.pow(2, exp - 23); 305 | } 306 | 307 | Unpacker.prototype.unpack_double = function(){ 308 | var h32 = this.unpack_uint32(); 309 | var l32 = this.unpack_uint32(); 310 | var sign = h32 >> 31; 311 | var exp = ((h32 >> 20) & 0x7ff) - 1023; 312 | var hfrac = ( h32 & 0xfffff ) | 0x100000; 313 | var frac = hfrac * Math.pow(2, exp - 20) + 314 | l32 * Math.pow(2, exp - 52); 315 | return (sign == 0 ? 1 : -1) * frac; 316 | } 317 | 318 | Unpacker.prototype.read = function(length){ 319 | var j = this.index; 320 | if (j + length <= this.length) { 321 | return this.dataView.subarray(j, j + length); 322 | } else { 323 | throw new Error('BinaryPackFailure: read index out of range'); 324 | } 325 | } 326 | 327 | function Packer (){ 328 | this.bufferBuilder = new BufferBuilder(); 329 | } 330 | 331 | Packer.prototype.pack = function(value){ 332 | var type = typeof(value); 333 | if (type == 'string'){ 334 | this.pack_string(value); 335 | } else if (type == 'number'){ 336 | if (Math.floor(value) === value){ 337 | this.pack_integer(value); 338 | } else{ 339 | this.pack_double(value); 340 | } 341 | } else if (type == 'boolean'){ 342 | if (value === true){ 343 | this.bufferBuilder.append(0xc3); 344 | } else if (value === false){ 345 | this.bufferBuilder.append(0xc2); 346 | } 347 | } else if (type == 'undefined'){ 348 | this.bufferBuilder.append(0xc0); 349 | } else if (type == 'object'){ 350 | if (value === null){ 351 | this.bufferBuilder.append(0xc0); 352 | } else { 353 | var constructor = value.constructor; 354 | if (constructor == Array){ 355 | this.pack_array(value); 356 | } else if (constructor == Blob || constructor == File) { 357 | this.pack_bin(value); 358 | } else if (constructor == ArrayBuffer) { 359 | if(binaryFeatures.useArrayBufferView) { 360 | this.pack_bin(new Uint8Array(value)); 361 | } else { 362 | this.pack_bin(value); 363 | } 364 | } else if ('BYTES_PER_ELEMENT' in value){ 365 | if(binaryFeatures.useArrayBufferView) { 366 | this.pack_bin(value); 367 | } else { 368 | this.pack_bin(value.buffer); 369 | } 370 | } else if (constructor == Object){ 371 | this.pack_object(value); 372 | } else if (constructor == Date){ 373 | this.pack_string(value.toString()); 374 | } else if (typeof value.toBinaryPack == 'function'){ 375 | this.bufferBuilder.append(value.toBinaryPack()); 376 | } else { 377 | throw new Error('Type "' + constructor.toString() + '" not yet supported'); 378 | } 379 | } 380 | } else { 381 | throw new Error('Type "' + type + '" not yet supported'); 382 | } 383 | return this.bufferBuilder.getBuffer(); 384 | } 385 | 386 | 387 | Packer.prototype.pack_bin = function(blob){ 388 | var length = blob.length || blob.byteLength || blob.size; 389 | if (length <= 0x0f){ 390 | this.pack_uint8(0xa0 + length); 391 | } else if (length <= 0xffff){ 392 | this.bufferBuilder.append(0xda) ; 393 | this.pack_uint16(length); 394 | } else if (length <= 0xffffffff){ 395 | this.bufferBuilder.append(0xdb); 396 | this.pack_uint32(length); 397 | } else{ 398 | throw new Error('Invalid length'); 399 | return; 400 | } 401 | this.bufferBuilder.append(blob); 402 | } 403 | 404 | Packer.prototype.pack_string = function(str){ 405 | var length = str.length; 406 | if (length <= 0x0f){ 407 | this.pack_uint8(0xb0 + length); 408 | } else if (length <= 0xffff){ 409 | this.bufferBuilder.append(0xd8) ; 410 | this.pack_uint16(length); 411 | } else if (length <= 0xffffffff){ 412 | this.bufferBuilder.append(0xd9); 413 | this.pack_uint32(length); 414 | } else{ 415 | throw new Error('Invalid length'); 416 | return; 417 | } 418 | this.bufferBuilder.append(str); 419 | } 420 | 421 | Packer.prototype.pack_array = function(ary){ 422 | var length = ary.length; 423 | if (length <= 0x0f){ 424 | this.pack_uint8(0x90 + length); 425 | } else if (length <= 0xffff){ 426 | this.bufferBuilder.append(0xdc) 427 | this.pack_uint16(length); 428 | } else if (length <= 0xffffffff){ 429 | this.bufferBuilder.append(0xdd); 430 | this.pack_uint32(length); 431 | } else{ 432 | throw new Error('Invalid length'); 433 | } 434 | for(var i = 0; i < length ; i++){ 435 | this.pack(ary[i]); 436 | } 437 | } 438 | 439 | Packer.prototype.pack_integer = function(num){ 440 | if ( -0x20 <= num && num <= 0x7f){ 441 | this.bufferBuilder.append(num & 0xff); 442 | } else if (0x00 <= num && num <= 0xff){ 443 | this.bufferBuilder.append(0xcc); 444 | this.pack_uint8(num); 445 | } else if (-0x80 <= num && num <= 0x7f){ 446 | this.bufferBuilder.append(0xd0); 447 | this.pack_int8(num); 448 | } else if ( 0x0000 <= num && num <= 0xffff){ 449 | this.bufferBuilder.append(0xcd); 450 | this.pack_uint16(num); 451 | } else if (-0x8000 <= num && num <= 0x7fff){ 452 | this.bufferBuilder.append(0xd1); 453 | this.pack_int16(num); 454 | } else if ( 0x00000000 <= num && num <= 0xffffffff){ 455 | this.bufferBuilder.append(0xce); 456 | this.pack_uint32(num); 457 | } else if (-0x80000000 <= num && num <= 0x7fffffff){ 458 | this.bufferBuilder.append(0xd2); 459 | this.pack_int32(num); 460 | } else if (-0x8000000000000000 <= num && num <= 0x7FFFFFFFFFFFFFFF){ 461 | this.bufferBuilder.append(0xd3); 462 | this.pack_int64(num); 463 | } else if (0x0000000000000000 <= num && num <= 0xFFFFFFFFFFFFFFFF){ 464 | this.bufferBuilder.append(0xcf); 465 | this.pack_uint64(num); 466 | } else{ 467 | throw new Error('Invalid integer'); 468 | } 469 | } 470 | 471 | Packer.prototype.pack_double = function(num){ 472 | var sign = 0; 473 | if (num < 0){ 474 | sign = 1; 475 | num = -num; 476 | } 477 | var exp = Math.floor(Math.log(num) / Math.LN2); 478 | var frac0 = num / Math.pow(2, exp) - 1; 479 | var frac1 = Math.floor(frac0 * Math.pow(2, 52)); 480 | var b32 = Math.pow(2, 32); 481 | var h32 = (sign << 31) | ((exp+1023) << 20) | 482 | (frac1 / b32) & 0x0fffff; 483 | var l32 = frac1 % b32; 484 | this.bufferBuilder.append(0xcb); 485 | this.pack_int32(h32); 486 | this.pack_int32(l32); 487 | } 488 | 489 | Packer.prototype.pack_object = function(obj){ 490 | var keys = Object.keys(obj); 491 | var length = keys.length; 492 | if (length <= 0x0f){ 493 | this.pack_uint8(0x80 + length); 494 | } else if (length <= 0xffff){ 495 | this.bufferBuilder.append(0xde); 496 | this.pack_uint16(length); 497 | } else if (length <= 0xffffffff){ 498 | this.bufferBuilder.append(0xdf); 499 | this.pack_uint32(length); 500 | } else{ 501 | throw new Error('Invalid length'); 502 | } 503 | for(var prop in obj){ 504 | if (obj.hasOwnProperty(prop)){ 505 | this.pack(prop); 506 | this.pack(obj[prop]); 507 | } 508 | } 509 | } 510 | 511 | Packer.prototype.pack_uint8 = function(num){ 512 | this.bufferBuilder.append(num); 513 | } 514 | 515 | Packer.prototype.pack_uint16 = function(num){ 516 | this.bufferBuilder.append(num >> 8); 517 | this.bufferBuilder.append(num & 0xff); 518 | } 519 | 520 | Packer.prototype.pack_uint32 = function(num){ 521 | var n = num & 0xffffffff; 522 | this.bufferBuilder.append((n & 0xff000000) >>> 24); 523 | this.bufferBuilder.append((n & 0x00ff0000) >>> 16); 524 | this.bufferBuilder.append((n & 0x0000ff00) >>> 8); 525 | this.bufferBuilder.append((n & 0x000000ff)); 526 | } 527 | 528 | Packer.prototype.pack_uint64 = function(num){ 529 | var high = num / Math.pow(2, 32); 530 | var low = num % Math.pow(2, 32); 531 | this.bufferBuilder.append((high & 0xff000000) >>> 24); 532 | this.bufferBuilder.append((high & 0x00ff0000) >>> 16); 533 | this.bufferBuilder.append((high & 0x0000ff00) >>> 8); 534 | this.bufferBuilder.append((high & 0x000000ff)); 535 | this.bufferBuilder.append((low & 0xff000000) >>> 24); 536 | this.bufferBuilder.append((low & 0x00ff0000) >>> 16); 537 | this.bufferBuilder.append((low & 0x0000ff00) >>> 8); 538 | this.bufferBuilder.append((low & 0x000000ff)); 539 | } 540 | 541 | Packer.prototype.pack_int8 = function(num){ 542 | this.bufferBuilder.append(num & 0xff); 543 | } 544 | 545 | Packer.prototype.pack_int16 = function(num){ 546 | this.bufferBuilder.append((num & 0xff00) >> 8); 547 | this.bufferBuilder.append(num & 0xff); 548 | } 549 | 550 | Packer.prototype.pack_int32 = function(num){ 551 | this.bufferBuilder.append((num >>> 24) & 0xff); 552 | this.bufferBuilder.append((num & 0x00ff0000) >>> 16); 553 | this.bufferBuilder.append((num & 0x0000ff00) >>> 8); 554 | this.bufferBuilder.append((num & 0x000000ff)); 555 | } 556 | 557 | Packer.prototype.pack_int64 = function(num){ 558 | var high = Math.floor(num / Math.pow(2, 32)); 559 | var low = num % Math.pow(2, 32); 560 | this.bufferBuilder.append((high & 0xff000000) >>> 24); 561 | this.bufferBuilder.append((high & 0x00ff0000) >>> 16); 562 | this.bufferBuilder.append((high & 0x0000ff00) >>> 8); 563 | this.bufferBuilder.append((high & 0x000000ff)); 564 | this.bufferBuilder.append((low & 0xff000000) >>> 24); 565 | this.bufferBuilder.append((low & 0x00ff0000) >>> 16); 566 | this.bufferBuilder.append((low & 0x0000ff00) >>> 8); 567 | this.bufferBuilder.append((low & 0x000000ff)); 568 | } 569 | 570 | })(this); 571 | /** 572 | * Light EventEmitter. Ported from Node.js/events.js 573 | * Eric Zhang 574 | */ 575 | 576 | /** 577 | * EventEmitter class 578 | * Creates an object with event registering and firing methods 579 | */ 580 | function EventEmitter() { 581 | // Initialise required storage variables 582 | this._events = {}; 583 | } 584 | 585 | var isArray = Array.isArray; 586 | 587 | 588 | EventEmitter.prototype.addListener = function(type, listener, scope, once) { 589 | if ('function' !== typeof listener) { 590 | throw new Error('addListener only takes instances of Function'); 591 | } 592 | 593 | // To avoid recursion in the case that type == "newListeners"! Before 594 | // adding it to the listeners, first emit "newListeners". 595 | this.emit('newListener', type, typeof listener.listener === 'function' ? 596 | listener.listener : listener); 597 | 598 | if (!this._events[type]) { 599 | // Optimize the case of one listener. Don't need the extra array object. 600 | this._events[type] = listener; 601 | } else if (isArray(this._events[type])) { 602 | 603 | // If we've already got an array, just append. 604 | this._events[type].push(listener); 605 | 606 | } else { 607 | // Adding the second element, need to change to array. 608 | this._events[type] = [this._events[type], listener]; 609 | } 610 | 611 | }; 612 | 613 | EventEmitter.prototype.on = EventEmitter.prototype.addListener; 614 | 615 | EventEmitter.prototype.once = function(type, listener, scope) { 616 | if ('function' !== typeof listener) { 617 | throw new Error('.once only takes instances of Function'); 618 | } 619 | 620 | var self = this; 621 | function g() { 622 | self.removeListener(type, g); 623 | listener.apply(this, arguments); 624 | }; 625 | 626 | g.listener = listener; 627 | self.on(type, g); 628 | 629 | return this; 630 | }; 631 | 632 | EventEmitter.prototype.removeListener = function(type, listener, scope) { 633 | if ('function' !== typeof listener) { 634 | throw new Error('removeListener only takes instances of Function'); 635 | } 636 | 637 | // does not use listeners(), so no side effect of creating _events[type] 638 | if (!this._events[type]) return this; 639 | 640 | var list = this._events[type]; 641 | 642 | if (isArray(list)) { 643 | var position = -1; 644 | for (var i = 0, length = list.length; i < length; i++) { 645 | if (list[i] === listener || 646 | (list[i].listener && list[i].listener === listener)) 647 | { 648 | position = i; 649 | break; 650 | } 651 | } 652 | 653 | if (position < 0) return this; 654 | list.splice(position, 1); 655 | if (list.length == 0) 656 | delete this._events[type]; 657 | } else if (list === listener || 658 | (list.listener && list.listener === listener)) 659 | { 660 | delete this._events[type]; 661 | } 662 | 663 | return this; 664 | }; 665 | 666 | 667 | EventEmitter.prototype.off = EventEmitter.prototype.removeListener; 668 | 669 | 670 | EventEmitter.prototype.removeAllListeners = function(type) { 671 | if (arguments.length === 0) { 672 | this._events = {}; 673 | return this; 674 | } 675 | 676 | // does not use listeners(), so no side effect of creating _events[type] 677 | if (type && this._events && this._events[type]) this._events[type] = null; 678 | return this; 679 | }; 680 | 681 | EventEmitter.prototype.listeners = function(type) { 682 | if (!this._events[type]) this._events[type] = []; 683 | if (!isArray(this._events[type])) { 684 | this._events[type] = [this._events[type]]; 685 | } 686 | return this._events[type]; 687 | }; 688 | 689 | EventEmitter.prototype.emit = function(type) { 690 | var type = arguments[0]; 691 | var handler = this._events[type]; 692 | if (!handler) return false; 693 | 694 | if (typeof handler == 'function') { 695 | switch (arguments.length) { 696 | // fast cases 697 | case 1: 698 | handler.call(this); 699 | break; 700 | case 2: 701 | handler.call(this, arguments[1]); 702 | break; 703 | case 3: 704 | handler.call(this, arguments[1], arguments[2]); 705 | break; 706 | // slower 707 | default: 708 | var l = arguments.length; 709 | var args = new Array(l - 1); 710 | for (var i = 1; i < l; i++) args[i - 1] = arguments[i]; 711 | handler.apply(this, args); 712 | } 713 | return true; 714 | 715 | } else if (isArray(handler)) { 716 | var l = arguments.length; 717 | var args = new Array(l - 1); 718 | for (var i = 1; i < l; i++) args[i - 1] = arguments[i]; 719 | 720 | var listeners = handler.slice(); 721 | for (var i = 0, l = listeners.length; i < l; i++) { 722 | listeners[i].apply(this, args); 723 | } 724 | return true; 725 | } else { 726 | return false; 727 | } 728 | }; 729 | 730 | 731 | 732 | 733 | var util = { 734 | inherits: function(ctor, superCtor) { 735 | ctor.super_ = superCtor; 736 | ctor.prototype = Object.create(superCtor.prototype, { 737 | constructor: { 738 | value: ctor, 739 | enumerable: false, 740 | writable: true, 741 | configurable: true 742 | } 743 | }); 744 | }, 745 | extend: function(dest, source) { 746 | for(var key in source) { 747 | if(source.hasOwnProperty(key)) { 748 | dest[key] = source[key]; 749 | } 750 | } 751 | return dest; 752 | }, 753 | pack: BinaryPack.pack, 754 | unpack: BinaryPack.unpack, 755 | setZeroTimeout: (function(global) { 756 | var timeouts = []; 757 | var messageName = 'zero-timeout-message'; 758 | 759 | // Like setTimeout, but only takes a function argument. There's 760 | // no time argument (always zero) and no arguments (you have to 761 | // use a closure). 762 | function setZeroTimeoutPostMessage(fn) { 763 | timeouts.push(fn); 764 | global.postMessage(messageName, '*'); 765 | } 766 | 767 | function handleMessage(event) { 768 | if (event.source == global && event.data == messageName) { 769 | if (event.stopPropagation) { 770 | event.stopPropagation(); 771 | } 772 | if (timeouts.length) { 773 | timeouts.shift()(); 774 | } 775 | } 776 | } 777 | if (global.addEventListener) { 778 | global.addEventListener('message', handleMessage, true); 779 | } else if (global.attachEvent) { 780 | global.attachEvent('onmessage', handleMessage); 781 | } 782 | return setZeroTimeoutPostMessage; 783 | }(this)) 784 | }; 785 | 786 | 787 | 788 | function Stream() { 789 | EventEmitter.call(this); 790 | } 791 | 792 | util.inherits(Stream, EventEmitter); 793 | 794 | Stream.prototype.pipe = function(dest, options) { 795 | var source = this; 796 | 797 | function ondata(chunk) { 798 | if (dest.writable) { 799 | if (false === dest.write(chunk) && source.pause) { 800 | source.pause(); 801 | } 802 | } 803 | } 804 | 805 | source.on('data', ondata); 806 | 807 | function ondrain() { 808 | if (source.readable && source.resume) { 809 | source.resume(); 810 | } 811 | } 812 | 813 | dest.on('drain', ondrain); 814 | 815 | // If the 'end' option is not supplied, dest.end() will be called when 816 | // source gets the 'end' or 'close' events. Only dest.end() once. 817 | if (!dest._isStdio && (!options || options.end !== false)) { 818 | source.on('end', onend); 819 | source.on('close', onclose); 820 | } 821 | 822 | var didOnEnd = false; 823 | function onend() { 824 | if (didOnEnd) return; 825 | didOnEnd = true; 826 | 827 | dest.end(); 828 | } 829 | 830 | 831 | function onclose() { 832 | if (didOnEnd) return; 833 | didOnEnd = true; 834 | 835 | dest.destroy(); 836 | } 837 | 838 | // don't leave dangling pipes when there are errors. 839 | function onerror(er) { 840 | cleanup(); 841 | if (this.listeners('error').length === 0) { 842 | throw er; // Unhandled stream error in pipe. 843 | } 844 | } 845 | 846 | source.on('error', onerror); 847 | dest.on('error', onerror); 848 | 849 | // remove all the event listeners that were added. 850 | function cleanup() { 851 | source.removeListener('data', ondata); 852 | dest.removeListener('drain', ondrain); 853 | 854 | source.removeListener('end', onend); 855 | source.removeListener('close', onclose); 856 | 857 | source.removeListener('error', onerror); 858 | dest.removeListener('error', onerror); 859 | 860 | source.removeListener('end', cleanup); 861 | source.removeListener('close', cleanup); 862 | 863 | dest.removeListener('end', cleanup); 864 | dest.removeListener('close', cleanup); 865 | } 866 | 867 | source.on('end', cleanup); 868 | source.on('close', cleanup); 869 | 870 | dest.on('end', cleanup); 871 | dest.on('close', cleanup); 872 | 873 | dest.emit('pipe', source); 874 | 875 | // Allow for unix-like usage: A.pipe(B).pipe(C) 876 | return dest; 877 | }; 878 | function BlobReadStream(source, options){ 879 | Stream.call(this); 880 | 881 | options = util.extend({ 882 | readDelay: 0, 883 | paused: false 884 | }, options); 885 | 886 | this._source = source; 887 | this._start = 0; 888 | this._readChunkSize = options.chunkSize || source.size; 889 | this._readDelay = options.readDelay; 890 | 891 | this.readable = true; 892 | this.paused = options.paused; 893 | 894 | this._read(); 895 | } 896 | 897 | util.inherits(BlobReadStream, Stream); 898 | 899 | 900 | BlobReadStream.prototype.pause = function(){ 901 | this.paused = true; 902 | }; 903 | 904 | BlobReadStream.prototype.resume = function(){ 905 | this.paused = false; 906 | this._read(); 907 | }; 908 | 909 | BlobReadStream.prototype.destroy = function(){ 910 | this.readable = false; 911 | clearTimeout(this._timeoutId); 912 | }; 913 | 914 | BlobReadStream.prototype._read = function(){ 915 | 916 | var self = this; 917 | 918 | function emitReadChunk(){ 919 | self._emitReadChunk(); 920 | } 921 | 922 | var readDelay = this._readDelay; 923 | if (readDelay !== 0){ 924 | this._timeoutId = setTimeout(emitReadChunk, readDelay); 925 | } else { 926 | util.setZeroTimeout(emitReadChunk); 927 | } 928 | 929 | }; 930 | 931 | BlobReadStream.prototype._emitReadChunk = function(){ 932 | 933 | if(this.paused || !this.readable) return; 934 | 935 | var chunkSize = Math.min(this._source.size - this._start, this._readChunkSize); 936 | 937 | if(chunkSize === 0){ 938 | this.readable = false; 939 | this.emit("end"); 940 | return; 941 | } 942 | 943 | var sourceEnd = this._start + chunkSize; 944 | var chunk = (this._source.slice || this._source.webkitSlice || this._source.mozSlice).call(this._source, this._start, sourceEnd); 945 | 946 | this._start = sourceEnd; 947 | this._read(); 948 | 949 | this.emit("data", chunk); 950 | 951 | }; 952 | 953 | /* 954 | 955 | 956 | 957 | 958 | function BlobWriteStream(options){ 959 | 960 | stream.Stream.call(this); 961 | 962 | options = _.extend({ 963 | onFull: onFull, 964 | onEnd: function(){}, 965 | minBlockAllocSize: 0, 966 | drainDelay:0 967 | }, options); 968 | 969 | this._onFull = options.onFull; 970 | this._onEnd = options.onEnd; 971 | this._onWrite = options.onWrite; 972 | 973 | this._minBlockAllocSize = options.minBlockAllocSize; 974 | this._maxBlockAllocSize = options.maxBlockAllocSize; 975 | this._drainDelay = options.drainDelay; 976 | 977 | this._buffer = new Buffer(options.minBlockAllocSize); 978 | this._destination = this._buffer; 979 | this._destinationPos = 0; 980 | 981 | this._writeQueue = []; 982 | this._pendingOnFull = false; 983 | this._pendingQueueDrain = false; 984 | 985 | this.writable = true; 986 | this.bytesWritten = 0; 987 | } 988 | 989 | util.inherits(BlobWriteStream, stream.Stream); 990 | 991 | BlobWriteStream.prototype.getBuffer = function(){ 992 | return this._buffer; 993 | }; 994 | 995 | BlobWriteStream.prototype.write = function(data, encoding){ 996 | 997 | if(!this.writable){ 998 | throw new Error("stream is not writable"); 999 | } 1000 | 1001 | if(!Buffer.isBuffer(data)){ 1002 | data = new Buffer(data, encoding); 1003 | } 1004 | 1005 | if(data.length){ 1006 | this._writeQueue.push(data); 1007 | } 1008 | 1009 | this._commit(); 1010 | 1011 | return this._writeQueue.length === 0; 1012 | }; 1013 | 1014 | BlobWriteStream.prototype._commit = function(){ 1015 | 1016 | var self = this; 1017 | 1018 | var destination = this._destination; 1019 | var writeQueue = this._writeQueue; 1020 | 1021 | var startDestinationPos = this._destinationPos; 1022 | 1023 | while(writeQueue.length && destination.length){ 1024 | 1025 | var head = writeQueue[0]; 1026 | 1027 | var copySize = Math.min(destination.length, head.length); 1028 | 1029 | head.copy(destination, 0, 0, copySize); 1030 | 1031 | head = head.slice(copySize); 1032 | destination = destination.slice(copySize); 1033 | 1034 | this.bytesWritten += copySize; 1035 | this._destinationPos += copySize; 1036 | 1037 | if(head.length === 0){ 1038 | writeQueue.shift(); 1039 | } 1040 | else{ 1041 | writeQueue[0] = head; 1042 | } 1043 | } 1044 | 1045 | this._destination = destination; 1046 | 1047 | bytesCommitted = this._destinationPos - startDestinationPos; 1048 | if(bytesCommitted){ 1049 | if(this._onWrite){ 1050 | 1051 | if(writeQueue.length){ 1052 | this._pendingQueueDrain = true; 1053 | } 1054 | 1055 | // By locking destination the buffer is frozen and the onWrite 1056 | // callback cannot miss any write commits 1057 | this._destination = emptyBuffer; 1058 | 1059 | var consumer = this._onWrite; 1060 | this._onWrite = null; 1061 | 1062 | consumer.call(this, function(nextCallback){ 1063 | util.setZeroTimeout(function(){ 1064 | self._destination = destination; 1065 | self._onWrite = nextCallback; 1066 | self._commit(); 1067 | }); 1068 | }, consumer); 1069 | 1070 | return; 1071 | } 1072 | } 1073 | 1074 | if(writeQueue.length){ 1075 | 1076 | this._pendingQueueDrain = true; 1077 | this._growBuffer(); 1078 | } 1079 | else if(this._pendingQueueDrain){ 1080 | 1081 | this._pendingQueueDrain = false; 1082 | 1083 | if(this._drainDelay !== 0){ 1084 | setTimeout(function(){ 1085 | self.emit("drain"); 1086 | }, this._drainDelay); 1087 | } 1088 | else{ 1089 | util.setZeroTimeout(function(){ 1090 | self.emit("drain"); 1091 | }); 1092 | } 1093 | } 1094 | }; 1095 | 1096 | BlobWriteStream.prototype._growBuffer = function(){ 1097 | 1098 | var self = this; 1099 | var writeQueue = this._writeQueue; 1100 | 1101 | var requestSize = this._minBlockAllocSize; 1102 | 1103 | var maxBlockAllocSize = this._maxBlockAllocSize; 1104 | var add = (maxBlockAllocSize === undefined ? function(a, b){return a + b;} : function(a, b){return Math.min(a + b, maxBlockAllocSize);}); 1105 | 1106 | for(var i = 0, queueLength = writeQueue.length; i < queueLength; i++){ 1107 | requestSize = add(requestSize, writeQueue[i].length); 1108 | } 1109 | 1110 | // Prevent concurrent onFull callbacks 1111 | if(this._pendingOnFull){ 1112 | return; 1113 | } 1114 | this._pendingOnFull = true; 1115 | 1116 | this._onFull(this._buffer, requestSize, function(buffer, destination){ 1117 | util.setZeroTimeout(function(){ 1118 | 1119 | self._pendingOnFull = false; 1120 | 1121 | if(!destination){ 1122 | if(self.writable){ 1123 | self.emit("error", new Error("buffer is full")); 1124 | } 1125 | self.destroy(); 1126 | return; 1127 | } 1128 | 1129 | self._buffer = buffer; 1130 | self._destination = destination; 1131 | 1132 | self._commit(); 1133 | }); 1134 | }); 1135 | }; 1136 | 1137 | BlobWriteStream.prototype.end = function(data, encoding){ 1138 | 1139 | var self = this; 1140 | 1141 | function _end(){ 1142 | self.writable = false; 1143 | self._onEnd(); 1144 | } 1145 | 1146 | if(data){ 1147 | if(this.write(data, encoding)){ 1148 | _end(); 1149 | }else{ 1150 | self.writable = false; 1151 | this.once("drain", _end); 1152 | } 1153 | } 1154 | else{ 1155 | _end(); 1156 | } 1157 | }; 1158 | 1159 | BlobWriteStream.prototype.destroy = function(){ 1160 | this.writable = false; 1161 | this._pendingQueueDrain = false; 1162 | this._writeQueue = []; 1163 | }; 1164 | 1165 | BlobWriteStream.prototype.consume = function(consume){ 1166 | 1167 | this._buffer = this._buffer.slice(consume); 1168 | this._destinationPos -= consume; 1169 | }; 1170 | 1171 | BlobWriteStream.prototype.getCommittedSlice = function(){ 1172 | return this._buffer.slice(0, this._destinationPos); 1173 | }; 1174 | 1175 | function onFull(buffer, extraSize, callback){ 1176 | var newBuffer = new Buffer(buffer.length + extraSize); 1177 | buffer.copy(newBuffer); 1178 | callback(newBuffer, newBuffer.slice(buffer.length)); 1179 | } 1180 | */ 1181 | exports.BlobReadStream = BlobReadStream; 1182 | 1183 | function BinaryStream(socket, id, create, meta) { 1184 | if (!(this instanceof BinaryStream)) return new BinaryStream(options); 1185 | 1186 | var self = this; 1187 | 1188 | Stream.call(this); 1189 | 1190 | 1191 | this.id = id; 1192 | this._socket = socket; 1193 | this._socket.addEventListener('error', function(error){ 1194 | self.readable = false; 1195 | self.writable = false; 1196 | self.emit('error', error); 1197 | }); 1198 | this._socket.addEventListener('close', function(code, message){ 1199 | self._onClose(); 1200 | }); 1201 | 1202 | 1203 | this.writable = true; 1204 | this.readable = true; 1205 | this.paused = false; 1206 | 1207 | this._closed = false; 1208 | this._ended = false; 1209 | 1210 | if(create) { 1211 | // This is a stream we are creating 1212 | this._write(1, meta, this.id); 1213 | } 1214 | } 1215 | 1216 | util.inherits(BinaryStream, Stream); 1217 | 1218 | 1219 | BinaryStream.prototype._onClose = function() { 1220 | // Emit close event 1221 | if (this._closed) { 1222 | return; 1223 | } 1224 | this.readable = false; 1225 | this.writable = false; 1226 | this._closed = true; 1227 | this.emit('close'); 1228 | }; 1229 | 1230 | // Write stream 1231 | 1232 | BinaryStream.prototype._onPause = function() { 1233 | // Emit pause event 1234 | this.paused = true; 1235 | this.emit('pause'); 1236 | }; 1237 | 1238 | BinaryStream.prototype._onResume = function() { 1239 | // Emit resume event 1240 | this.paused = false; 1241 | this.emit('resume'); 1242 | this.emit('drain'); 1243 | }; 1244 | 1245 | BinaryStream.prototype._write = function(code, data, bonus, cb) { 1246 | var message = util.pack([code, data, bonus]); 1247 | return this._socket.send(message, {binary: true}, cb) !== false; 1248 | }; 1249 | 1250 | BinaryStream.prototype.write = function(data, cb) { 1251 | if(this.writable) { 1252 | var out = this._write(2, data, this.id, cb); 1253 | return !this.paused && out; 1254 | } else { 1255 | throw new Error('Stream is not writable'); 1256 | } 1257 | }; 1258 | 1259 | BinaryStream.prototype.end = function() { 1260 | this._ended = true; 1261 | this.readable = false; 1262 | this._write(5, null, this.id); 1263 | }; 1264 | 1265 | BinaryStream.prototype.destroy = BinaryStream.prototype.destroySoon = function() { 1266 | this._onClose(); 1267 | this._write(6, null, this.id); 1268 | }; 1269 | 1270 | 1271 | // Read stream 1272 | 1273 | BinaryStream.prototype._onEnd = function() { 1274 | if(this._ended) { 1275 | return; 1276 | } 1277 | this._ended = true; 1278 | this.readable = false; 1279 | this.emit('end'); 1280 | }; 1281 | 1282 | BinaryStream.prototype._onData = function(data) { 1283 | // Dispatch 1284 | this.emit('data', data); 1285 | }; 1286 | 1287 | BinaryStream.prototype.pause = function() { 1288 | this._onPause(); 1289 | this._write(3, null, this.id); 1290 | }; 1291 | 1292 | BinaryStream.prototype.resume = function() { 1293 | this._onResume(); 1294 | this._write(4, null, this.id); 1295 | }; 1296 | 1297 | 1298 | function BinaryClient(socket, options) { 1299 | if (!(this instanceof BinaryClient)) return new BinaryClient(options); 1300 | 1301 | EventEmitter.call(this); 1302 | 1303 | var self = this; 1304 | 1305 | this._options = util.extend({ 1306 | chunkSize: 40960 1307 | }, options); 1308 | 1309 | this.streams = {}; 1310 | 1311 | if(typeof socket === 'string') { 1312 | this._nextId = 0; 1313 | this._socket = new WebSocket(socket); 1314 | } else { 1315 | // Use odd numbered ids for server originated streams 1316 | this._nextId = 1; 1317 | this._socket = socket; 1318 | } 1319 | 1320 | this._socket.binaryType = 'arraybuffer'; 1321 | 1322 | this._socket.addEventListener('open', function(){ 1323 | self.emit('open'); 1324 | }); 1325 | this._socket.addEventListener('error', function(error){ 1326 | self.emit('error', error); 1327 | }); 1328 | this._socket.addEventListener('close', function(code, message){ 1329 | self.emit('close', code, message); 1330 | }); 1331 | this._socket.addEventListener('message', function(data, flags){ 1332 | util.setZeroTimeout(function(){ 1333 | 1334 | // Message format 1335 | // [type, payload, bonus ] 1336 | // 1337 | // Reserved 1338 | // [ 0 , X , X ] 1339 | // 1340 | // 1341 | // New stream 1342 | // [ 1 , Meta , new streamId ] 1343 | // 1344 | // 1345 | // Data 1346 | // [ 2 , Data , streamId ] 1347 | // 1348 | // 1349 | // Pause 1350 | // [ 3 , null , streamId ] 1351 | // 1352 | // 1353 | // Resume 1354 | // [ 4 , null , streamId ] 1355 | // 1356 | // 1357 | // End 1358 | // [ 5 , null , streamId ] 1359 | // 1360 | // 1361 | // Close 1362 | // [ 6 , null , streamId ] 1363 | // 1364 | 1365 | data = data.data; 1366 | 1367 | 1368 | data = util.unpack(data); 1369 | switch(data[0]) { 1370 | case 0: 1371 | // Reserved 1372 | break; 1373 | case 1: 1374 | var meta = data[1]; 1375 | var streamId = data[2]; 1376 | var binaryStream = self._receiveStream(streamId); 1377 | self.emit('stream', binaryStream, meta); 1378 | break; 1379 | case 2: 1380 | var payload = data[1]; 1381 | var streamId = data[2]; 1382 | var binaryStream = self.streams[streamId]; 1383 | if(binaryStream) { 1384 | binaryStream._onData(payload); 1385 | } else { 1386 | self.emit('error', 'Received `data` message for unknown stream: ' + streamId); 1387 | } 1388 | break; 1389 | case 3: 1390 | var streamId = data[2]; 1391 | var binaryStream = self.streams[streamId]; 1392 | if(binaryStream) { 1393 | binaryStream._onPause(); 1394 | } else { 1395 | self.emit('error', 'Received `pause` message for unknown stream: ' + streamId); 1396 | } 1397 | break; 1398 | case 4: 1399 | var streamId = data[2]; 1400 | var binaryStream = self.streams[streamId]; 1401 | if(binaryStream) { 1402 | binaryStream._onResume(); 1403 | } else { 1404 | self.emit('error', 'Received `resume` message for unknown stream: ' + streamId); 1405 | } 1406 | break; 1407 | case 5: 1408 | var streamId = data[2]; 1409 | var binaryStream = self.streams[streamId]; 1410 | if(binaryStream) { 1411 | binaryStream._onEnd(); 1412 | } else { 1413 | self.emit('error', 'Received `end` message for unknown stream: ' + streamId); 1414 | } 1415 | break; 1416 | case 6: 1417 | var streamId = data[2]; 1418 | var binaryStream = self.streams[streamId]; 1419 | if(binaryStream) { 1420 | binaryStream._onClose(); 1421 | } else { 1422 | self.emit('error', 'Received `close` message for unknown stream: ' + streamId); 1423 | } 1424 | break; 1425 | default: 1426 | self.emit('error', 'Unrecognized message type received: ' + data[0]); 1427 | } 1428 | }); 1429 | }); 1430 | } 1431 | 1432 | util.inherits(BinaryClient, EventEmitter); 1433 | 1434 | BinaryClient.prototype.send = function(data, meta){ 1435 | var stream = this.createStream(meta); 1436 | if(data instanceof Stream) { 1437 | data.pipe(stream); 1438 | } else if (util.isNode === true) { 1439 | if(Buffer.isBuffer(data)) { 1440 | (new BufferReadStream(data, {chunkSize: this._options.chunkSize})).pipe(stream); 1441 | } else { 1442 | stream.write(data); 1443 | } 1444 | } else if (util.isNode !== true) { 1445 | if(data.constructor == Blob || data.constructor == File) { 1446 | (new BlobReadStream(data, {chunkSize: this._options.chunkSize})).pipe(stream); 1447 | } else if (data.constructor == ArrayBuffer) { 1448 | var blob; 1449 | if(binaryFeatures.useArrayBufferView) { 1450 | data = new Uint8Array(data); 1451 | } 1452 | if(binaryFeatures.useBlobBuilder) { 1453 | var builder = new BlobBuilder(); 1454 | builder.append(data); 1455 | blob = builder.getBlob() 1456 | } else { 1457 | blob = new Blob([data]); 1458 | } 1459 | (new BlobReadStream(blob, {chunkSize: this._options.chunkSize})).pipe(stream); 1460 | } else if (typeof data === 'object' && 'BYTES_PER_ELEMENT' in data) { 1461 | var blob; 1462 | if(!binaryFeatures.useArrayBufferView) { 1463 | // Warn 1464 | data = data.buffer; 1465 | } 1466 | if(binaryFeatures.useBlobBuilder) { 1467 | var builder = new BlobBuilder(); 1468 | builder.append(data); 1469 | blob = builder.getBlob() 1470 | } else { 1471 | blob = new Blob([data]); 1472 | } 1473 | (new BlobReadStream(blob, {chunkSize: this._options.chunkSize})).pipe(stream); 1474 | } else { 1475 | stream.write(data); 1476 | } 1477 | } 1478 | return stream; 1479 | }; 1480 | 1481 | BinaryClient.prototype._receiveStream = function(streamId){ 1482 | var self = this; 1483 | var binaryStream = new BinaryStream(this._socket, streamId, false); 1484 | binaryStream.on('close', function(){ 1485 | delete self.streams[streamId]; 1486 | }); 1487 | this.streams[streamId] = binaryStream; 1488 | return binaryStream; 1489 | }; 1490 | 1491 | BinaryClient.prototype.createStream = function(meta){ 1492 | if(this._socket.readyState !== WebSocket.OPEN) { 1493 | throw new Error('Client is not yet connected or has closed'); 1494 | return; 1495 | } 1496 | var self = this; 1497 | var streamId = this._nextId; 1498 | this._nextId += 2; 1499 | var binaryStream = new BinaryStream(this._socket, streamId, true, meta); 1500 | binaryStream.on('close', function(){ 1501 | delete self.streams[streamId]; 1502 | }); 1503 | this.streams[streamId] = binaryStream; 1504 | return binaryStream; 1505 | }; 1506 | 1507 | BinaryClient.prototype.close = BinaryClient.prototype.destroy = function(code, message) { 1508 | this._socket.close(code, message); 1509 | }; 1510 | 1511 | 1512 | exports.BinaryClient = BinaryClient; 1513 | 1514 | })(this); 1515 | -------------------------------------------------------------------------------- /public/js/broadcast.js: -------------------------------------------------------------------------------- 1 | var room; 2 | var last; 3 | var ascii; 4 | 5 | var video; 6 | var canvas; 7 | var ascii; 8 | var ctx; 9 | var localMediaStream; 10 | 11 | var broadcasting = false; 12 | var show = true; 13 | var asciiWorker = new Worker("/js/jsascii.js"); 14 | asciiWorker.onmessage = draw; 15 | 16 | var client = new BinaryClient('ws://'+window.location.hostname+':9001'); 17 | var stream; 18 | client.on('open', function(){ 19 | stream = client.createStream({room: room, type: 'write'}); 20 | }); 21 | 22 | 23 | $(function(){ 24 | video = document.getElementById('v'); 25 | canvas = document.getElementById('c'); 26 | ascii = document.getElementById("ascii"); 27 | last = document.getElementById("last"); 28 | 29 | ctx = canvas.getContext('2d'); 30 | 31 | $(ascii).width($(last).outerWidth()) 32 | $(ascii).height($(last).outerHeight()); 33 | $(ascii).css('visibility', 'visible'); 34 | $(last).css('visibility', 'visible'); 35 | 36 | function fail(){ 37 | alert('fail'); 38 | } 39 | 40 | // Not showing vendor prefixes or code that works cross-browser. 41 | navigator.webkitGetUserMedia({video: true}, function(stream) { 42 | video.src = window.webkitURL.createObjectURL(stream); 43 | localMediaStream = stream; 44 | setInterval(frame, 150); 45 | }, fail); 46 | 47 | $("#startbtn").toggle(function(){ 48 | broadcasting = true; 49 | $("#indicator").stop().animate({opacity: 0}, function(){ 50 | $("#btntext").text("Stop broadcasting"); 51 | $("#indicator").prop('src', '/images/green.png').animate({opacity: 1}); 52 | }); 53 | }, function(){ 54 | $("#indicator").stop().animate({opacity: 0}, function(){ 55 | $("#btntext").text("Start broadcasting"); 56 | $("#indicator").prop('src', '/images/red.png').animate({opacity: 1}); 57 | }); 58 | broadcasting = false; 59 | }); 60 | 61 | }); 62 | 63 | 64 | 65 | 66 | /* 67 | $(document).ready(function(){ 68 | last = document.getElementById('last'); 69 | 70 | 71 | 72 | $("#camera").webcam({ 73 | onSave: function(data) { 74 | if(broadcasting && !stream.paused) { 75 | stream.write(data); 76 | } 77 | if(show) { 78 | asciiWorker.postMessage(data); 79 | } else { 80 | setZeroTimeout(webcam.save); 81 | } 82 | }, 83 | onLoad: function(){webcam.save();} 84 | }); 85 | 86 | 87 | $("#startbtn").toggle(function(){ 88 | broadcasting = true; 89 | $("#indicator").stop().animate({opacity: 0}, function(){ 90 | $("#btntext").text("Stop broadcasting"); 91 | $("#indicator").prop('src', '/images/green.png').animate({opacity: 1}); 92 | }); 93 | }, function(){ 94 | $("#indicator").stop().animate({opacity: 0}, function(){ 95 | $("#btntext").text("Start broadcasting"); 96 | $("#indicator").prop('src', '/images/red.png').animate({opacity: 1}); 97 | }); 98 | broadcasting = false; 99 | }); 100 | 101 | $("#showbtn").toggle(function(){ 102 | show = false; 103 | $("#btn2text").text("Start video"); 104 | }, function(){ 105 | $("#btn2text").text("Stop video"); 106 | show = true;; 107 | }); 108 | 109 | }); 110 | */ 111 | 112 | function frame() { 113 | if (localMediaStream) { 114 | ctx.drawImage(video, 0, 0, 100, 75); 115 | var data = ctx.getImageData(0,0, 100,75).data; 116 | asciiWorker.postMessage(data); 117 | // "image/webp" works in Chrome 18. In other browsers, this will fall back to image/png. 118 | // document.querySelector('img').src = canvas.toDataURL('image/webp'); 119 | } 120 | } 121 | 122 | function draw(event) { 123 | var strChars = event.data.str; 124 | ascii.removeChild(last); 125 | // can't get a span or div to flow like an img element, but a table works? 126 | last = document.createElement("div"); 127 | last.innerHTML = strChars; 128 | ascii.appendChild(last); 129 | if(broadcasting && !stream.paused) { 130 | stream.write(event.data.buf); 131 | } 132 | } 133 | 134 | 135 | -------------------------------------------------------------------------------- /public/js/index.js: -------------------------------------------------------------------------------- 1 | (function() { 2 | 3 | var timeouts = [], 4 | messageName = 'zero-timeout-message'; 5 | 6 | // Like setTimeout, but only takes a function argument. There's 7 | // no time argument (always zero) and no arguments (you have to 8 | // use a closure). 9 | function setZeroTimeoutPostMessage(fn) { 10 | timeouts.push(fn); 11 | window.postMessage(messageName, '*'); 12 | } 13 | 14 | function setZeroTimeout(fn) { 15 | setTimeout(fn, 0); 16 | } 17 | 18 | function handleMessage(event) { 19 | if (event.source == window && event.data == messageName) { 20 | if (event.stopPropagation) { 21 | event.stopPropagation(); 22 | } 23 | if (timeouts.length) { 24 | timeouts.shift()(); 25 | } 26 | } 27 | } 28 | 29 | if (window.postMessage) { 30 | if (window.addEventListener) { 31 | window.addEventListener('message', handleMessage, true); 32 | } else if (window.attachEvent) { 33 | window.attachEvent('onmessage', handleMessage); 34 | } 35 | window.setZeroTimeout = setZeroTimeoutPostMessage; 36 | } else { 37 | window.setZeroTimeout = setZeroTimeout; 38 | } 39 | 40 | }()); -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- /public/js/jsascii.js: -------------------------------------------------------------------------------- 1 | 2 | var charList = [" ", ".", ",", ":", ";", "i", "1", "t", "f", "L", "C", "G", "0", "8", "@"]; 3 | 4 | var cli = charList.length-1; 5 | 6 | var w = 100; 7 | var h = 75; 8 | 9 | this.onmessage = function(event) { 10 | 11 | 12 | var img = event.data; 13 | 14 | var buf = new Uint8Array(15000); 15 | var strChars = ''; 16 | for (var y = 0; y < h; y++) { 17 | var outRow = y*w*2; 18 | var row = outRow*2; 19 | for(var x = 0; x < w; x++) { 20 | 21 | var loc = row+x*4; 22 | var outLoc = outRow+x*2; 23 | 24 | var r = img[loc]; 25 | var g = img[loc+1]; 26 | var b = img[loc+2]; 27 | 28 | var rr = Math.floor(r/16); 29 | var gr = Math.floor(g/16); 30 | var br = Math.floor(b/16); 31 | 32 | var bright = (0.3*r + 0.59*g + 0.11*b) / 255; 33 | var idx = (cli) - Math.round(bright * (cli)); 34 | 35 | var char = charList[idx]; 36 | 37 | strChars += "" + char + char + ""; 40 | 41 | // strChars += '(' + r + ',' + g + ',' + b + ',' + a + ')'; 42 | 43 | buf[outLoc] = (idx << 4) + rr; 44 | buf[outLoc+1] = (gr << 4) + br; 45 | } 46 | strChars += "\n"; 47 | } 48 | postMessage({str: strChars, buf: buf}); 49 | } 50 | 51 | -------------------------------------------------------------------------------- /public/js/render.js: -------------------------------------------------------------------------------- 1 | 2 | var charList = [" ", ".", ",", ":", ";", "i", "1", "t", "f", "L", "C", "G", "0", "8", "@"]; 3 | 4 | 5 | var w = 100; 6 | var h = 75; 7 | 8 | this.onmessage = function(event) { 9 | 10 | var img = event.data; 11 | 12 | var strChars = ''; 13 | for (var y = 0; y < h; y++) { 14 | var row = y*w*2; 15 | for(var x = 0; x < w; x++) { 16 | 17 | var loc = row+x*2; 18 | 19 | var b1 = img[loc]; 20 | var b2 = img[loc+1]; 21 | 22 | 23 | var idx = b1 >> 4; 24 | var r = b1 & 15; 25 | var g = b2 >> 4; 26 | var b = b2 & 15; 27 | 28 | var char = charList[idx]; 29 | 30 | strChars += "" + char + char + ""; 33 | 34 | //strChars += '(' + r + ',' + g + ',' + b + ',' + idx + ')'; 35 | //strChars += '(' + loc + ')'; 36 | } 37 | strChars += "\n"; 38 | } 39 | postMessage(strChars); 40 | } 41 | 42 | -------------------------------------------------------------------------------- /public/js/renderColor.js: -------------------------------------------------------------------------------- 1 | 2 | var w = 100; 3 | var h = 75; 4 | 5 | this.onmessage = function(event) { 6 | 7 | var img = event.data; 8 | 9 | var strChars = ''; 10 | for (var y = 0; y < h; y++) { 11 | var row = y*w*2; 12 | for(var x = 0; x < w; x++) { 13 | 14 | var loc = row+x*2; 15 | 16 | var b1 = img[loc]; 17 | var b2 = img[loc+1]; 18 | 19 | 20 | var idx = b1 >> 4; 21 | var r = b1 & 15; 22 | var g = b2 >> 4; 23 | var b = b2 & 15; 24 | 25 | strChars += "  "; 28 | 29 | //strChars += '(' + r + ',' + g + ',' + b + ',' + idx + ')'; 30 | //strChars += '(' + loc + ')'; 31 | } 32 | strChars += "\n"; 33 | } 34 | postMessage(strChars); 35 | } 36 | 37 | -------------------------------------------------------------------------------- /public/js/view.js: -------------------------------------------------------------------------------- 1 | var room; 2 | var last; 3 | var ascii; 4 | 5 | var broadcasting = false; 6 | var color = false; 7 | var colorWorker = new Worker("/js/renderColor.js"); 8 | colorWorker.onmessage = draw; 9 | var asciiWorker = new Worker("/js/render.js"); 10 | asciiWorker.onmessage = draw; 11 | var client = new BinaryClient('ws://'+window.location.hostname+':9001'); 12 | var stream; 13 | client.on('open', function(){ 14 | stream = client.createStream({room: room, type: 'read'}); 15 | stream.on('data', function(data) { 16 | if(color) { 17 | colorWorker.postMessage(new Uint8Array(data)); 18 | } else { 19 | asciiWorker.postMessage(new Uint8Array(data)); 20 | } 21 | }); 22 | }); 23 | 24 | $(document).ready(function(){ 25 | last = document.getElementById('last'); 26 | ascii = document.getElementById("ascii"); 27 | $(ascii).width($(last).outerWidth()) 28 | $(ascii).height($(last).outerHeight()); 29 | $(ascii).css('visibility', 'visible'); 30 | $(last).css('visibility', 'visible'); 31 | 32 | $("#showbtn").toggle(function(){ 33 | color = true; 34 | $("#btn2text").text("ASCII Mode"); 35 | }, function(){ 36 | color = false; 37 | $("#btn2text").text("Color Mode"); 38 | }); 39 | }); 40 | 41 | function draw(event) { 42 | var strChars = event.data; 43 | ascii.removeChild(last); 44 | // can't get a span or div to flow like an img element, but a table works? 45 | last = document.createElement("div"); 46 | last.innerHTML = strChars; 47 | ascii.appendChild(last); 48 | } 49 | 50 | -------------------------------------------------------------------------------- /server.js: -------------------------------------------------------------------------------- 1 | var express = require('express'); 2 | var fs = require('fs'); 3 | var app = express.createServer(); 4 | 5 | // Initialize main server 6 | app.use(express.bodyParser()); 7 | 8 | app.use(express.static(__dirname + '/public')); 9 | 10 | app.set('view engine', 'ejs'); 11 | app.set('views', __dirname + '/views'); 12 | 13 | 14 | app.get('/', function(req, res){ 15 | res.render('index'); 16 | }); 17 | 18 | 19 | app.get('/view/:room', function(req, res){ 20 | res.render('view', {room: req.params.room}); 21 | }); 22 | 23 | app.get('/broadcast/:room', function(req, res){ 24 | res.render('broadcast', {room: req.params.room}); 25 | }); 26 | 27 | 28 | app.listen(80); 29 | 30 | 31 | var BinaryServer = require('binaryjs').BinaryServer; 32 | var rooms = {}; 33 | 34 | // Start Binary.js server 35 | var server = BinaryServer({port: 9001}); 36 | // Wait for new user connections 37 | server.on('connection', function(client){ 38 | client.on('error', function(e) { 39 | console.log(e.stack, e.message); 40 | }); 41 | client.on('stream', function(stream, meta){ 42 | if(meta.type == 'write') { 43 | rooms[meta.room] = stream; 44 | } else if (meta.type == 'read' && rooms[meta.room]) { 45 | rooms[meta.room].pipe(stream); 46 | } 47 | }); 48 | }); 49 | -------------------------------------------------------------------------------- /views/broadcast.ejs: -------------------------------------------------------------------------------- 1 | 2 | 3 |
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80 | 81 | 82 | -------------------------------------------------------------------------------- /views/index.ejs: -------------------------------------------------------------------------------- 1 |
2 |

 

3 |

 

4 |

Ascam is a ASCII webcam broadcast tool using getUserMedia and BinaryJS

5 | No Flash here! Only compatible with Google Chrome 21+ 6 | 7 |

 

8 |

 

9 |

 

10 |

http://ascam.ericzhang.com/view/roomname
to view a broadcast

11 |

 

12 |

http://ascam.ericzhang.com/broadcast/roomname
to create broadcast

13 | 14 |
15 | -------------------------------------------------------------------------------- /views/layout.ejs: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | <%-body%> 22 | 23 | 24 | -------------------------------------------------------------------------------- /views/view.ejs: -------------------------------------------------------------------------------- 1 | 2 | 3 |
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