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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 define('data_receiver', [ | 5 define('data_receiver', [ |
| 6 'device/serial/data_stream.mojom', | 6 'device/serial/data_stream.mojom', |
| 7 'device/serial/data_stream_serialization.mojom', | 7 'device/serial/data_stream_serialization.mojom', |
| 8 'mojo/public/js/core', | 8 'mojo/public/js/core', |
| 9 'mojo/public/js/router', | 9 'mojo/public/js/router', |
| 10 ], function(dataStream, serialization, core, router) { | 10 ], function(dataStream, serialization, core, router) { |
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| 79 * @param {number} error The error to dispatch. | 79 * @param {number} error The error to dispatch. |
| 80 */ | 80 */ |
| 81 PendingReceive.prototype.dispatchFatalError = function(error) { | 81 PendingReceive.prototype.dispatchFatalError = function(error) { |
| 82 var e = new Error(); | 82 var e = new Error(); |
| 83 e.error = error; | 83 e.error = error; |
| 84 this.errorCallback_(e); | 84 this.errorCallback_(e); |
| 85 }; | 85 }; |
| 86 | 86 |
| 87 /** | 87 /** |
| 88 * A DataReceiver that receives data from a DataSource. | 88 * A DataReceiver that receives data from a DataSource. |
| 89 * @param {!MojoHandle} source The handle to the DataSource. | 89 * @param {!MojoHandle} handle The handle to the DataSource. |
| 90 * @param {!MojoHandle} client The handle to the DataSourceClient. | |
| 91 * @param {number} bufferSize How large a buffer to use. | 90 * @param {number} bufferSize How large a buffer to use. |
| 92 * @param {number} fatalErrorValue The receive error value to report in the | 91 * @param {number} fatalErrorValue The receive error value to report in the |
| 93 * event of a fatal error. | 92 * event of a fatal error. |
| 94 * @constructor | 93 * @constructor |
| 95 * @alias module:data_receiver.DataReceiver | 94 * @alias module:data_receiver.DataReceiver |
| 96 */ | 95 */ |
| 97 function DataReceiver(source, client, bufferSize, fatalErrorValue) { | 96 function DataReceiver(handle, bufferSize, fatalErrorValue) { |
| 98 this.init_(source, client, fatalErrorValue, 0, null, [], false); | 97 this.init_(handle, fatalErrorValue, 0, null, [], false); |
| 99 this.source_.init(bufferSize); | 98 this.source_.init(bufferSize); |
| 100 } | 99 } |
| 101 | 100 |
| 102 DataReceiver.prototype = | 101 DataReceiver.prototype = |
| 103 $Object.create(dataStream.DataSourceClient.stubClass.prototype); | 102 $Object.create(dataStream.DataSourceClient.stubClass.prototype); |
| 104 | 103 |
| 105 /** | 104 /** |
| 106 * Closes this DataReceiver. | 105 * Closes this DataReceiver. |
| 107 */ | 106 */ |
| 108 DataReceiver.prototype.close = function() { | 107 DataReceiver.prototype.close = function() { |
| 109 if (this.shutDown_) | 108 if (this.shutDown_) |
| 110 return; | 109 return; |
| 111 this.shutDown_ = true; | 110 this.shutDown_ = true; |
| 112 this.router_.close(); | 111 this.router_.close(); |
| 113 this.clientRouter_.close(); | |
| 114 if (this.receive_) { | 112 if (this.receive_) { |
| 115 this.receive_.dispatchFatalError(this.fatalErrorValue_); | 113 this.receive_.dispatchFatalError(this.fatalErrorValue_); |
| 116 this.receive_ = null; | 114 this.receive_ = null; |
| 117 } | 115 } |
| 118 }; | 116 }; |
| 119 | 117 |
| 120 /** | 118 /** |
| 121 * Initialize this DataReceiver. | 119 * Initialize this DataReceiver. |
| 122 * @param {!MojoHandle} source A handle to the DataSource. | 120 * @param {!MojoHandle} source A handle to the DataSource |
| 123 * @param {!MojoHandle} client A handle to the DataSourceClient. | |
| 124 * @param {number} fatalErrorValue The error to dispatch in the event of a | 121 * @param {number} fatalErrorValue The error to dispatch in the event of a |
| 125 * fatal error. | 122 * fatal error. |
| 126 * @param {number} bytesReceived The number of bytes already received. | 123 * @param {number} bytesReceived The number of bytes already received. |
| 127 * @param {PendingReceiveError} pendingError The pending error if there is | 124 * @param {PendingReceiveError} pendingError The pending error if there is |
| 128 * one. | 125 * one. |
| 129 * @param {!Array.<!ArrayBuffer>} pendingData Data received from the | 126 * @param {!Array.<!ArrayBuffer>} pendingData Data received from the |
| 130 * DataSource not yet requested by the client. | 127 * DataSource not yet requested by the client. |
| 131 * @param {boolean} paused Whether the DataSource is paused. | 128 * @param {boolean} paused Whether the DataSource is paused. |
| 132 * @private | 129 * @private |
| 133 */ | 130 */ |
| 134 DataReceiver.prototype.init_ = function(source, client, fatalErrorValue, | 131 DataReceiver.prototype.init_ = function(source, |
| 135 bytesReceived, pendingError, | 132 fatalErrorValue, |
| 136 pendingData, paused) { | 133 bytesReceived, |
| 134 pendingError, |
| 135 pendingData, |
| 136 paused) { |
| 137 /** | 137 /** |
| 138 * The [Router]{@link module:mojo/public/js/router.Router} for the | 138 * The [Router]{@link module:mojo/public/js/router.Router} for the |
| 139 * connection to the DataSource. | 139 * connection to the DataSource. |
| 140 * @private | 140 * @private |
| 141 */ | 141 */ |
| 142 this.router_ = new router.Router(source); | 142 this.router_ = new router.Router(source); |
| 143 /** | 143 /** |
| 144 * The [Router]{@link module:mojo/public/js/router.Router} for the | |
| 145 * connection to the DataSource. | |
| 146 * @private | |
| 147 */ | |
| 148 this.clientRouter_ = new router.Router(client); | |
| 149 /** | |
| 150 * The connection to the DataSource. | 144 * The connection to the DataSource. |
| 151 * @private | 145 * @private |
| 152 */ | 146 */ |
| 153 this.source_ = new dataStream.DataSource.proxyClass(this.router_); | 147 this.source_ = new dataStream.DataSource.proxyClass(this.router_); |
| 154 this.client_ = new dataStream.DataSourceClient.stubClass(this); | 148 this.router_.setIncomingReceiver(this); |
| 155 this.clientRouter_.setIncomingReceiver(this.client_); | |
| 156 /** | 149 /** |
| 157 * The current receive operation. | 150 * The current receive operation. |
| 158 * @type {module:data_receiver~PendingReceive} | 151 * @type {module:data_receiver~PendingReceive} |
| 159 * @private | 152 * @private |
| 160 */ | 153 */ |
| 161 this.receive_ = null; | 154 this.receive_ = null; |
| 162 /** | 155 /** |
| 163 * The error to be dispatched in the event of a fatal error. | 156 * The error to be dispatched in the event of a fatal error. |
| 164 * @const {number} | 157 * @const {number} |
| 165 * @private | 158 * @private |
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| 202 DataReceiver.prototype.serialize = function() { | 195 DataReceiver.prototype.serialize = function() { |
| 203 if (this.shutDown_) | 196 if (this.shutDown_) |
| 204 return Promise.resolve(null); | 197 return Promise.resolve(null); |
| 205 | 198 |
| 206 if (this.receive_) { | 199 if (this.receive_) { |
| 207 this.receive_.dispatchFatalError(this.fatalErrorValue_); | 200 this.receive_.dispatchFatalError(this.fatalErrorValue_); |
| 208 this.receive_ = null; | 201 this.receive_ = null; |
| 209 } | 202 } |
| 210 var serialized = new serialization.SerializedDataReceiver(); | 203 var serialized = new serialization.SerializedDataReceiver(); |
| 211 serialized.source = this.router_.connector_.handle_; | 204 serialized.source = this.router_.connector_.handle_; |
| 212 serialized.client = this.clientRouter_.connector_.handle_; | |
| 213 serialized.fatal_error_value = this.fatalErrorValue_; | 205 serialized.fatal_error_value = this.fatalErrorValue_; |
| 214 serialized.paused = this.paused_; | 206 serialized.paused = this.paused_; |
| 215 serialized.pending_error = this.pendingError_; | 207 serialized.pending_error = this.pendingError_; |
| 216 serialized.pending_data = []; | 208 serialized.pending_data = []; |
| 217 $Array.forEach(this.pendingDataBuffers_, function(buffer) { | 209 $Array.forEach(this.pendingDataBuffers_, function(buffer) { |
| 218 serialized.pending_data.push(new Uint8Array(buffer)); | 210 serialized.pending_data.push(new Uint8Array(buffer)); |
| 219 }); | 211 }); |
| 220 this.router_.connector_.handle_ = null; | 212 this.router_.connector_.handle_ = null; |
| 221 this.router_.close(); | 213 this.router_.close(); |
| 222 this.clientRouter_.connector_.handle_ = null; | |
| 223 this.clientRouter_.close(); | |
| 224 this.shutDown_ = true; | 214 this.shutDown_ = true; |
| 225 return Promise.resolve(serialized); | 215 return Promise.resolve(serialized); |
| 226 }; | 216 }; |
| 227 | 217 |
| 228 /** | 218 /** |
| 229 * Deserializes a SerializedDataReceiver. | 219 * Deserializes a SerializedDataReceiver. |
| 230 * @param {SerializedDataReceiver} serialized The serialized DataReceiver. | 220 * @param {SerializedDataReceiver} serialized The serialized DataReceiver. |
| 231 * @return {!DataReceiver} The deserialized DataReceiver. | 221 * @return {!DataReceiver} The deserialized DataReceiver. |
| 232 */ | 222 */ |
| 233 DataReceiver.deserialize = function(serialized) { | 223 DataReceiver.deserialize = function(serialized) { |
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| 245 if (!serialized) { | 235 if (!serialized) { |
| 246 this.shutDown_ = true; | 236 this.shutDown_ = true; |
| 247 return; | 237 return; |
| 248 } | 238 } |
| 249 var pendingData = []; | 239 var pendingData = []; |
| 250 $Array.forEach(serialized.pending_data, function(data) { | 240 $Array.forEach(serialized.pending_data, function(data) { |
| 251 var buffer = new Uint8Array(data.length); | 241 var buffer = new Uint8Array(data.length); |
| 252 buffer.set(data); | 242 buffer.set(data); |
| 253 pendingData.push(buffer.buffer); | 243 pendingData.push(buffer.buffer); |
| 254 }); | 244 }); |
| 255 this.init_(serialized.source, serialized.client, | 245 this.init_(serialized.source, |
| 256 serialized.fatal_error_value, serialized.bytes_received, | 246 serialized.fatal_error_value, |
| 257 serialized.pending_error, pendingData, serialized.paused); | 247 serialized.bytes_received, |
| 248 serialized.pending_error, |
| 249 pendingData, |
| 250 serialized.paused); |
| 258 }; | 251 }; |
| 259 | 252 |
| 260 /** | 253 /** |
| 261 * Receive data from the DataSource. | 254 * Receive data from the DataSource. |
| 262 * @return {Promise.<ArrayBuffer>} A promise to the received data. If an error | 255 * @return {Promise.<ArrayBuffer>} A promise to the received data. If an error |
| 263 * occurs, the promise will reject with an Error object with a property | 256 * occurs, the promise will reject with an Error object with a property |
| 264 * error containing the error code. | 257 * error containing the error code. |
| 265 * @throws Will throw if this has encountered a fatal error or another receive | 258 * @throws Will throw if this has encountered a fatal error or another receive |
| 266 * is in progress. | 259 * is in progress. |
| 267 */ | 260 */ |
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| 327 var buffer = new ArrayBuffer(data.length); | 320 var buffer = new ArrayBuffer(data.length); |
| 328 var uintView = new Uint8Array(buffer); | 321 var uintView = new Uint8Array(buffer); |
| 329 uintView.set(data); | 322 uintView.set(data); |
| 330 this.pendingDataBuffers_.push(buffer); | 323 this.pendingDataBuffers_.push(buffer); |
| 331 if (this.receive_) | 324 if (this.receive_) |
| 332 this.dispatchData_(); | 325 this.dispatchData_(); |
| 333 }; | 326 }; |
| 334 | 327 |
| 335 return {DataReceiver: DataReceiver}; | 328 return {DataReceiver: DataReceiver}; |
| 336 }); | 329 }); |
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