15c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// Copyright 2014 The Chromium Authors. All rights reserved. 25c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// Use of this source code is governed by a BSD-style license that can be 35c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// found in the LICENSE file. 45c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 55c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 65c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @fileoverview Implements a low-level gnubby driver based on chrome.hid. 75c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 85c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu'use strict'; 95c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Low level gnubby 'driver'. One per physical USB device. 125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {Gnubbies} gnubbies The gnubbies instances this device is enumerated 135c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * in. 145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {!chrome.hid.ConnectionHandle} dev The device. 155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} id The device's id. 165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @constructor 175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @implements {llGnubby} 185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liufunction llHidGnubby(gnubbies, dev, id) { 205c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu /** @private {Gnubbies} */ 215c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.gnubbies_ = gnubbies; 225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.dev = dev; 235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.id = id; 245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.txqueue = []; 255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.clients = []; 265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockCID = 0; // channel ID of client holding a lock, if != 0. 275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockMillis = 0; // current lock period. 285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockTID = null; // timer id of lock timeout. 295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.closing = false; // device to be closed by receive loop. 305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.updating = false; // device firmware is in final stage of updating. 315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu} 325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 345c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Namespace for the llHidGnubby implementation. 355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @const 365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.NAMESPACE = 'hid'; 385c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 395c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** Destroys this low-level device instance. */ 405c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.destroy = function() { 415c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.dev) return; // Already dead. 425c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 4346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) this.gnubbies_.removeOpenDevice( 4446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) {namespace: llHidGnubby.NAMESPACE, device: this.id}); 455c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.closing = true; 465c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 475c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('llHidGnubby.destroy()')); 485c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 495c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Synthesize a close error frame to alert all clients, 505c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // some of which might be in read state. 515c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // 525c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Use magic CID 0 to address all. 535c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.publishFrame_(new Uint8Array([ 545c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 0, 0, 0, 0, // broadcast CID 555c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llGnubby.CMD_ERROR, 565c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 0, 1, // length 575c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llGnubby.GONE]).buffer); 585c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 595c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Set all clients to closed status and remove them. 605c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu while (this.clients.length != 0) { 615c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var client = this.clients.shift(); 625c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (client) client.closed = true; 635c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 645c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 655c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockTID) { 665c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.clearTimeout(this.lockTID); 675c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockTID = null; 685c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 695c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 705c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var dev = this.dev; 715c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.dev = null; 725c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 7346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) chrome.hid.disconnect(dev.connectionId, function() { 745c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('Device ' + dev.handle + ' closed')); 7546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) }); 765c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 775c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 785c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 795c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Push frame to all clients. 80010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {ArrayBuffer} f Data to push 815c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 825c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 835c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.publishFrame_ = function(f) { 845c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var old = this.clients; 855c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 865c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var remaining = []; 875c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var changes = false; 885c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < old.length; ++i) { 895c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var client = old[i]; 905c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (client.receivedFrame(f)) { 915c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Client still alive; keep on list. 925c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu remaining.push(client); 935c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } else { 945c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu changes = true; 955c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt( 965c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu '[' + client.cid.toString(16) + '] left?')); 975c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 985c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 995c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (changes) this.clients = remaining; 1005c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 1015c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1025c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 1035c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Register a client for this gnubby. 1045c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {*} who The client. 1055c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 1065c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.registerClient = function(who) { 1075c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < this.clients.length; ++i) { 1085c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.clients[i] === who) return; // Already registered. 1095c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.clients.push(who); 1115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.clients.length == 1) { 1125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // First client? Kick off read loop. 1135c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.readLoop_(); 1145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 1165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 1185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * De-register a client. 1195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {*} who The client. 1205c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @return {number} The number of remaining listeners for this device, or -1 1215c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Returns number of remaining listeners for this device. 1225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * if this had no clients to start with. 1235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 1245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.deregisterClient = function(who) { 1255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var current = this.clients; 1265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (current.length == 0) return -1; 1275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.clients = []; 1285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < current.length; ++i) { 1295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var client = current[i]; 1305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (client !== who) this.clients.push(client); 1315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return this.clients.length; 1335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 1345c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 1365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {*} who The client. 1375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @return {boolean} Whether this device has who as a client. 1385c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 1395c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.hasClient = function(who) { 1405c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.clients.length == 0) return false; 1415c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < this.clients.length; ++i) { 1425c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (who === this.clients[i]) 1435c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return true; 1445c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1455c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return false; 1465c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 1475c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1485c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 1495c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Reads all incoming frames and notifies clients of their receipt. 1505c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 1515c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 1525c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.readLoop_ = function() { 1535c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu //console.log(UTIL_fmt('entering readLoop')); 1545c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.dev) return; 1555c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1565c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.closing) { 1575c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.destroy(); 1585c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 1595c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1605c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1615c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // No interested listeners, yet we hit readLoop(). 1625c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Must be clean-up. We do this here to make sure no transfer is pending. 1635c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.clients.length) { 1645c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.closing = true; 1655c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.destroy(); 1665c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 1675c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1685c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1695c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // firmwareUpdate() sets this.updating when writing the last block before 1705c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // the signature. We process that reply with the already pending 1715c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // read transfer but we do not want to start another read transfer for the 1725c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // signature block, since that request will have no reply. 1735c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Instead we will see the device drop and re-appear on the bus. 1745c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Current libusb on some platforms gets unhappy when transfer are pending 1755c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // when that happens. 176010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) // TODO: revisit once Chrome stabilizes its behavior. 1775c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.updating) { 1785c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('device updating. Ending readLoop()')); 1795c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 1805c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1815c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1825c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var self = this; 1835c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu chrome.hid.receive( 1845c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.dev.connectionId, 1855c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 64, 1865c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu function(x) { 1875c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (chrome.runtime.lastError || !x) { 1885c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('got lastError')); 1895c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(chrome.runtime.lastError); 1905c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.setTimeout(function() { self.destroy(); }, 0); 1915c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 1925c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 1935c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var u8 = new Uint8Array(x); 1945c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu //console.log(UTIL_fmt('<' + UTIL_BytesToHex(u8))); 1955c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1965c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu self.publishFrame_(x); 1975c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 1985c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Read more. 1995c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.setTimeout(function() { self.readLoop_(); }, 0); 2005c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2015c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu ); 2025c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 2035c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2045c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 2055c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Check whether channel is locked for this request or not. 206010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} cid Channel id 207010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} cmd Request command 2085c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @return {boolean} true if not locked for this request. 2095c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 2105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 2115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.checkLock_ = function(cid, cmd) { 2125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockCID) { 2135c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // We have an active lock. 2145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockCID != cid) { 2155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Some other channel has active lock. 2165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (cmd != llGnubby.CMD_SYNC) { 2185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Anything but SYNC gets an immediate busy. 2195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var busy = new Uint8Array( 2205c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu [(cid >> 24) & 255, 2215c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu (cid >> 16) & 255, 2225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu (cid >> 8) & 255, 2235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu cid & 255, 2245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llGnubby.CMD_ERROR, 2255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 0, 1, // length 2265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llGnubby.BUSY]); 2275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Log the synthetic busy too. 2285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('<' + UTIL_BytesToHex(busy))); 2295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.publishFrame_(busy.buffer); 2305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return false; 2315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // SYNC gets to go to the device to flush OS tx/rx queues. 2345c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // The usb firmware always responds to SYNC, regardless of lock status. 2355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return true; 2385c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 2395c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2405c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 2415c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Update or grab lock. 242010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} cid Channel ID 243010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} cmd Command 244010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} arg Command argument 2455c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 2465c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 2475c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.updateLock_ = function(cid, cmd, arg) { 2485c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockCID == 0 || this.lockCID == cid) { 2495c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // It is this caller's or nobody's lock. 2505c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockTID) { 2515c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.clearTimeout(this.lockTID); 2525c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockTID = null; 2535c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2545c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2555c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (cmd == llGnubby.CMD_LOCK) { 2565c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var nseconds = arg; 2575c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (nseconds != 0) { 2585c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockCID = cid; 2595c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Set tracking time to be .1 seconds longer than usb device does. 2605c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockMillis = nseconds * 1000 + 100; 2615c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } else { 2625c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Releasing lock voluntarily. 2635c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockCID = 0; 2645c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2655c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2665c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2675c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // (re)set the lock timeout if we still hold it. 2685c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.lockCID) { 2695c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var self = this; 2705c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockTID = window.setTimeout( 2715c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu function() { 2725c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.warn(UTIL_fmt( 2735c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 'lock for CID ' + cid.toString(16) + ' expired!')); 2745c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu self.lockTID = null; 2755c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu self.lockCID = 0; 2765c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu }, 2775c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.lockMillis); 2785c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2795c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 2805c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 2815c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2825c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 2835c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Queue command to be sent. 2845c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * If queue was empty, initiate the write. 2855c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} cid The client's channel ID. 2865c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} cmd The command to send. 28746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * @param {ArrayBuffer|Uint8Array} data Command arguments 2885c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 2895c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.queueCommand = function(cid, cmd, data) { 2905c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.dev) return; 2915c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.checkLock_(cid, cmd)) return; 2925c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2935c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var u8 = new Uint8Array(data); 2945c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var f = new Uint8Array(64); 2955c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2965c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llHidGnubby.setCid_(f, cid); 2975c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu f[4] = cmd; 2985c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu f[5] = (u8.length >> 8); 2995c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu f[6] = (u8.length & 255); 3005c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3015c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var lockArg = (u8.length > 0) ? u8[0] : 0; 3025c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3035c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Fragment over our 64 byte frames. 3045c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var n = 7; 3055c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var seq = 0; 3065c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < u8.length; ++i) { 3075c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu f[n++] = u8[i]; 3085c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (n == f.length) { 3095c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.queueFrame_(f.buffer, cid, cmd, lockArg); 3105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu f = new Uint8Array(64); 3125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llHidGnubby.setCid_(f, cid); 3135c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu cmd = f[4] = seq++; 3145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu n = 5; 3155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (n != 5) { 3185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.queueFrame_(f.buffer, cid, cmd, lockArg); 3195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3205c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 3215c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 3235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Sets the channel id in the frame. 324010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {Uint8Array} frame Data frame 3255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} cid The client's channel ID. 3265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 3275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 3285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.setCid_ = function(frame, cid) { 3295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu frame[0] = cid >>> 24; 3305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu frame[1] = cid >>> 16; 3315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu frame[2] = cid >>> 8; 3325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu frame[3] = cid; 3335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 3345c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 3365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Updates the lock, and queues the frame for sending. Also begins sending if 3375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * no other writes are outstanding. 338010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {ArrayBuffer} frame Data frame 3395c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} cid The client's channel ID. 3405c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} cmd The command to send. 341010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {number} arg Command argument 3425c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 3435c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 3445c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.queueFrame_ = function(frame, cid, cmd, arg) { 3455c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.updateLock_(cid, cmd, arg); 3465c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var wasEmpty = (this.txqueue.length == 0); 3475c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.txqueue.push(frame); 3485c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (wasEmpty) this.writePump_(); 3495c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 3505c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3515c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 3525c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Stuff queued frames from txqueue[] to device, one by one. 3535c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @private 3545c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 3555c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.prototype.writePump_ = function() { 3565c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!this.dev) return; // Ignore. 3575c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3585c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (this.txqueue.length == 0) return; // Done with current queue. 3595c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3605c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var frame = this.txqueue[0]; 3615c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3625c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var self = this; 3635c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu function transferComplete(x) { 3645c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (chrome.runtime.lastError) { 3655c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(UTIL_fmt('got lastError')); 3665c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(chrome.runtime.lastError); 3675c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.setTimeout(function() { self.destroy(); }, 0); 3685c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 3695c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3705c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu self.txqueue.shift(); // drop sent frame from queue. 3715c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (self.txqueue.length != 0) { 3725c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu window.setTimeout(function() { self.writePump_(); }, 0); 3735c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3745c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu }; 3755c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3765c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var u8 = new Uint8Array(frame); 3775c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu //console.log(UTIL_fmt('>' + UTIL_BytesToHex(u8))); 3785c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3795c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var u8f = new Uint8Array(64); 3805c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu for (var i = 0; i < u8.length; ++i) { 3815c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu u8f[i] = u8[i]; 3825c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3835c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3845c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu chrome.hid.send( 3855c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu this.dev.connectionId, 3865c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 0, // report Id 3875c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu u8f.buffer, 3885c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu transferComplete 3895c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu ); 3905c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 3915c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 392010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {function(Array)} cb Enumeration callback 3935c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 3945c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.enumerate = function(cb) { 3955c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu chrome.hid.getDevices({'vendorId': 4176, 'productId': 512}, cb); 3965c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 3975c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 3985c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 3995c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {Gnubbies} gnubbies The gnubbies instances this device is enumerated 4005c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * in. 4015c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {number} which The index of the device to open. 4025c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {!chrome.hid.HidDeviceInfo} dev The device to open. 4035c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @param {function(number, llGnubby=)} cb Called back with the 4045c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * result of opening the device. 4055c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 4065c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.open = function(gnubbies, which, dev, cb) { 4075c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu chrome.hid.connect(dev.deviceId, function(handle) { 4085c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (chrome.runtime.lastError) { 4095c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.log(chrome.runtime.lastError); 4105c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 4115c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (!handle) { 4125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu console.warn(UTIL_fmt('failed to connect device. permissions issue?')); 4135c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu cb(-llGnubby.NODEVICE); 4145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return; 4155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 4165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var nonNullHandle = /** @type {!chrome.hid.HidConnection} */ (handle); 4175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var gnubby = new llHidGnubby(gnubbies, nonNullHandle, which); 4185c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu cb(-llGnubby.OK, gnubby); 4195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu }); 4205c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 4215c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 4225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 423010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {*} dev A browser API device object 4245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * @return {llGnubbyDeviceId} A device identifier for the device. 4255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 4265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.deviceToDeviceId = function(dev) { 4275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var hidDev = /** @type {!chrome.hid.HidDeviceInfo} */ (dev); 4285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var deviceId = { namespace: llHidGnubby.NAMESPACE, device: hidDev.deviceId }; 4295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return deviceId; 4305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 4315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 4325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu/** 4335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Registers this implementation with gnubbies. 434010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) * @param {Gnubbies} gnubbies Gnubbies registry 4355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu */ 4365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo LiullHidGnubby.register = function(gnubbies) { 4375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu var HID_GNUBBY_IMPL = { 4385c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu enumerate: llHidGnubby.enumerate, 4395c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu deviceToDeviceId: llHidGnubby.deviceToDeviceId, 4405c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu open: llHidGnubby.open 4415c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu }; 4425c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu gnubbies.registerNamespace(llHidGnubby.NAMESPACE, HID_GNUBBY_IMPL); 4435c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu}; 444