--- /dev/null
+/*\r
+ Speed Plug-in\r
+ \r
+ Features:\r
+ *Adds several properties to the 'file' object indicated upload speed, time left, upload time, etc.\r
+ - currentSpeed -- String indicating the upload speed, bytes per second\r
+ - averageSpeed -- Overall average upload speed, bytes per second\r
+ - movingAverageSpeed -- Speed over averaged over the last several measurements, bytes per second\r
+ - timeRemaining -- Estimated remaining upload time in seconds\r
+ - timeElapsed -- Number of seconds passed for this upload\r
+ - percentUploaded -- Percentage of the file uploaded (0 to 100)\r
+ - sizeUploaded -- Formatted size uploaded so far, bytes\r
+ \r
+ *Adds setting 'moving_average_history_size' for defining the window size used to calculate the moving average speed.\r
+ \r
+ *Adds several Formatting functions for formatting that values provided on the file object.\r
+ - SWFUpload.speed.formatBPS(bps) -- outputs string formatted in the best units (Gbps, Mbps, Kbps, bps)\r
+ - SWFUpload.speed.formatTime(seconds) -- outputs string formatted in the best units (x Hr y M z S)\r
+ - SWFUpload.speed.formatSize(bytes) -- outputs string formatted in the best units (w GB x MB y KB z B )\r
+ - SWFUpload.speed.formatPercent(percent) -- outputs string formatted with a percent sign (x.xx %)\r
+ - SWFUpload.speed.formatUnits(baseNumber, divisionArray, unitLabelArray, fractionalBoolean)\r
+ - Formats a number using the division array to determine how to apply the labels in the Label Array\r
+ - factionalBoolean indicates whether the number should be returned as a single fractional number with a unit (speed)\r
+ or as several numbers labeled with units (time)\r
+ */\r
+\r
+var SWFUpload;\r
+if (typeof(SWFUpload) === "function") {\r
+ SWFUpload.speed = {};\r
+ \r
+ SWFUpload.prototype.initSettings = (function (oldInitSettings) {\r
+ return function () {\r
+ if (typeof(oldInitSettings) === "function") {\r
+ oldInitSettings.call(this);\r
+ }\r
+ \r
+ this.ensureDefault = function (settingName, defaultValue) {\r
+ this.settings[settingName] = (this.settings[settingName] == undefined) ? defaultValue : this.settings[settingName];\r
+ };\r
+\r
+ // List used to keep the speed stats for the files we are tracking\r
+ this.fileSpeedStats = {};\r
+ this.speedSettings = {};\r
+\r
+ this.ensureDefault("moving_average_history_size", "10");\r
+ \r
+ this.speedSettings.user_file_queued_handler = this.settings.file_queued_handler;\r
+ this.speedSettings.user_file_queue_error_handler = this.settings.file_queue_error_handler;\r
+ this.speedSettings.user_upload_start_handler = this.settings.upload_start_handler;\r
+ this.speedSettings.user_upload_error_handler = this.settings.upload_error_handler;\r
+ this.speedSettings.user_upload_progress_handler = this.settings.upload_progress_handler;\r
+ this.speedSettings.user_upload_success_handler = this.settings.upload_success_handler;\r
+ this.speedSettings.user_upload_complete_handler = this.settings.upload_complete_handler;\r
+ \r
+ this.settings.file_queued_handler = SWFUpload.speed.fileQueuedHandler;\r
+ this.settings.file_queue_error_handler = SWFUpload.speed.fileQueueErrorHandler;\r
+ this.settings.upload_start_handler = SWFUpload.speed.uploadStartHandler;\r
+ this.settings.upload_error_handler = SWFUpload.speed.uploadErrorHandler;\r
+ this.settings.upload_progress_handler = SWFUpload.speed.uploadProgressHandler;\r
+ this.settings.upload_success_handler = SWFUpload.speed.uploadSuccessHandler;\r
+ this.settings.upload_complete_handler = SWFUpload.speed.uploadCompleteHandler;\r
+ \r
+ delete this.ensureDefault;\r
+ };\r
+ })(SWFUpload.prototype.initSettings);\r
+\r
+ \r
+ SWFUpload.speed.fileQueuedHandler = function (file) {\r
+ if (typeof this.speedSettings.user_file_queued_handler === "function") {\r
+ file = SWFUpload.speed.extendFile(file);\r
+ \r
+ return this.speedSettings.user_file_queued_handler.call(this, file);\r
+ }\r
+ };\r
+ \r
+ SWFUpload.speed.fileQueueErrorHandler = function (file, errorCode, message) {\r
+ if (typeof this.speedSettings.user_file_queue_error_handler === "function") {\r
+ file = SWFUpload.speed.extendFile(file);\r
+ \r
+ return this.speedSettings.user_file_queue_error_handler.call(this, file, errorCode, message);\r
+ }\r
+ };\r
+\r
+ SWFUpload.speed.uploadStartHandler = function (file) {\r
+ if (typeof this.speedSettings.user_upload_start_handler === "function") {\r
+ file = SWFUpload.speed.extendFile(file, this.fileSpeedStats);\r
+ return this.speedSettings.user_upload_start_handler.call(this, file);\r
+ }\r
+ };\r
+ \r
+ SWFUpload.speed.uploadErrorHandler = function (file, errorCode, message) {\r
+ file = SWFUpload.speed.extendFile(file, this.fileSpeedStats);\r
+ SWFUpload.speed.removeTracking(file, this.fileSpeedStats);\r
+\r
+ if (typeof this.speedSettings.user_upload_error_handler === "function") {\r
+ return this.speedSettings.user_upload_error_handler.call(this, file, errorCode, message);\r
+ }\r
+ };\r
+ SWFUpload.speed.uploadProgressHandler = function (file, bytesComplete, bytesTotal) {\r
+ this.updateTracking(file, bytesComplete);\r
+ file = SWFUpload.speed.extendFile(file, this.fileSpeedStats);\r
+\r
+ if (typeof this.speedSettings.user_upload_progress_handler === "function") {\r
+ return this.speedSettings.user_upload_progress_handler.call(this, file, bytesComplete, bytesTotal);\r
+ }\r
+ };\r
+ \r
+ SWFUpload.speed.uploadSuccessHandler = function (file, serverData) {\r
+ if (typeof this.speedSettings.user_upload_success_handler === "function") {\r
+ file = SWFUpload.speed.extendFile(file, this.fileSpeedStats);\r
+ return this.speedSettings.user_upload_success_handler.call(this, file, serverData);\r
+ }\r
+ };\r
+ SWFUpload.speed.uploadCompleteHandler = function (file) {\r
+ file = SWFUpload.speed.extendFile(file, this.fileSpeedStats);\r
+ SWFUpload.speed.removeTracking(file, this.fileSpeedStats);\r
+\r
+ if (typeof this.speedSettings.user_upload_complete_handler === "function") {\r
+ return this.speedSettings.user_upload_complete_handler.call(this, file);\r
+ }\r
+ };\r
+ \r
+ // Private: extends the file object with the speed plugin values\r
+ SWFUpload.speed.extendFile = function (file, trackingList) {\r
+ var tracking;\r
+ \r
+ if (trackingList) {\r
+ tracking = trackingList[file.id];\r
+ }\r
+ \r
+ if (tracking) {\r
+ file.currentSpeed = tracking.currentSpeed;\r
+ file.averageSpeed = tracking.averageSpeed;\r
+ file.movingAverageSpeed = tracking.movingAverageSpeed;\r
+ file.timeRemaining = tracking.timeRemaining;\r
+ file.timeElapsed = tracking.timeElapsed;\r
+ file.percentUploaded = tracking.percentUploaded;\r
+ file.sizeUploaded = tracking.bytesUploaded;\r
+\r
+ } else {\r
+ file.currentSpeed = 0;\r
+ file.averageSpeed = 0;\r
+ file.movingAverageSpeed = 0;\r
+ file.timeRemaining = 0;\r
+ file.timeElapsed = 0;\r
+ file.percentUploaded = 0;\r
+ file.sizeUploaded = 0;\r
+ }\r
+ \r
+ return file;\r
+ };\r
+ \r
+ // Private: Updates the speed tracking object, or creates it if necessary\r
+ SWFUpload.prototype.updateTracking = function (file, bytesUploaded) {\r
+ var tracking = this.fileSpeedStats[file.id];\r
+ if (!tracking) {\r
+ this.fileSpeedStats[file.id] = tracking = {};\r
+ }\r
+ \r
+ // Sanity check inputs\r
+ bytesUploaded = bytesUploaded || tracking.bytesUploaded || 0;\r
+ if (bytesUploaded < 0) {\r
+ bytesUploaded = 0;\r
+ }\r
+ if (bytesUploaded > file.size) {\r
+ bytesUploaded = file.size;\r
+ }\r
+ \r
+ var tickTime = (new Date()).getTime();\r
+ if (!tracking.startTime) {\r
+ tracking.startTime = (new Date()).getTime();\r
+ tracking.lastTime = tracking.startTime;\r
+ tracking.currentSpeed = 0;\r
+ tracking.averageSpeed = 0;\r
+ tracking.movingAverageSpeed = 0;\r
+ tracking.movingAverageHistory = [];\r
+ tracking.timeRemaining = 0;\r
+ tracking.timeElapsed = 0;\r
+ tracking.percentUploaded = bytesUploaded / file.size;\r
+ tracking.bytesUploaded = bytesUploaded;\r
+ } else if (tracking.startTime > tickTime) {\r
+ this.debug("When backwards in time");\r
+ } else {\r
+ // Get time and deltas\r
+ var now = (new Date()).getTime();\r
+ var lastTime = tracking.lastTime;\r
+ var deltaTime = now - lastTime;\r
+ var deltaBytes = bytesUploaded - tracking.bytesUploaded;\r
+ \r
+ if (deltaBytes === 0 || deltaTime === 0) {\r
+ return tracking;\r
+ }\r
+ \r
+ // Update tracking object\r
+ tracking.lastTime = now;\r
+ tracking.bytesUploaded = bytesUploaded;\r
+ \r
+ // Calculate speeds\r
+ tracking.currentSpeed = (deltaBytes * 8 ) / (deltaTime / 1000);\r
+ tracking.averageSpeed = (tracking.bytesUploaded * 8) / ((now - tracking.startTime) / 1000);\r
+\r
+ // Calculate moving average\r
+ tracking.movingAverageHistory.push(tracking.currentSpeed);\r
+ if (tracking.movingAverageHistory.length > this.settings.moving_average_history_size) {\r
+ tracking.movingAverageHistory.shift();\r
+ }\r
+ \r
+ tracking.movingAverageSpeed = SWFUpload.speed.calculateMovingAverage(tracking.movingAverageHistory);\r
+ \r
+ // Update times\r
+ tracking.timeRemaining = (file.size - tracking.bytesUploaded) * 8 / tracking.movingAverageSpeed;\r
+ tracking.timeElapsed = (now - tracking.startTime) / 1000;\r
+ \r
+ // Update percent\r
+ tracking.percentUploaded = (tracking.bytesUploaded / file.size * 100);\r
+ }\r
+ \r
+ return tracking;\r
+ };\r
+ SWFUpload.speed.removeTracking = function (file, trackingList) {\r
+ try {\r
+ trackingList[file.id] = null;\r
+ delete trackingList[file.id];\r
+ } catch (ex) {\r
+ }\r
+ };\r
+ \r
+ SWFUpload.speed.formatUnits = function (baseNumber, unitDivisors, unitLabels, singleFractional) {\r
+ var i, unit, unitDivisor, unitLabel;\r
+\r
+ if (baseNumber === 0) {\r
+ return "0 " + unitLabels[unitLabels.length - 1];\r
+ }\r
+ \r
+ if (singleFractional) {\r
+ unit = baseNumber;\r
+ unitLabel = unitLabels.length >= unitDivisors.length ? unitLabels[unitDivisors.length - 1] : "";\r
+ for (i = 0; i < unitDivisors.length; i++) {\r
+ if (baseNumber >= unitDivisors[i]) {\r
+ unit = (baseNumber / unitDivisors[i]).toFixed(2);\r
+ unitLabel = unitLabels.length >= i ? " " + unitLabels[i] : "";\r
+ break;\r
+ }\r
+ }\r
+ \r
+ return unit + unitLabel;\r
+ } else {\r
+ var formattedStrings = [];\r
+ var remainder = baseNumber;\r
+ \r
+ for (i = 0; i < unitDivisors.length; i++) {\r
+ unitDivisor = unitDivisors[i];\r
+ unitLabel = unitLabels.length > i ? " " + unitLabels[i] : "";\r
+ \r
+ unit = remainder / unitDivisor;\r
+ if (i < unitDivisors.length -1) {\r
+ unit = Math.floor(unit);\r
+ } else {\r
+ unit = unit.toFixed(2);\r
+ }\r
+ if (unit > 0) {\r
+ remainder = remainder % unitDivisor;\r
+ \r
+ formattedStrings.push(unit + unitLabel);\r
+ }\r
+ }\r
+ \r
+ return formattedStrings.join(" ");\r
+ }\r
+ };\r
+ \r
+ SWFUpload.speed.formatBPS = function (baseNumber) {\r
+ var bpsUnits = [1073741824, 1048576, 1024, 1], bpsUnitLabels = ["Gbps", "Mbps", "Kbps", "bps"];\r
+ return SWFUpload.speed.formatUnits(baseNumber, bpsUnits, bpsUnitLabels, true);\r
+ \r
+ };\r
+ SWFUpload.speed.formatTime = function (baseNumber) {\r
+ var timeUnits = [86400, 3600, 60, 1], timeUnitLabels = ["d", "h", "m", "s"];\r
+ return SWFUpload.speed.formatUnits(baseNumber, timeUnits, timeUnitLabels, false);\r
+ \r
+ };\r
+ SWFUpload.speed.formatBytes = function (baseNumber) {\r
+ var sizeUnits = [1073741824, 1048576, 1024, 1], sizeUnitLabels = ["GB", "MB", "KB", "bytes"];\r
+ return SWFUpload.speed.formatUnits(baseNumber, sizeUnits, sizeUnitLabels, true);\r
+ \r
+ };\r
+ SWFUpload.speed.formatPercent = function (baseNumber) {\r
+ return baseNumber.toFixed(2) + " %";\r
+ };\r
+ \r
+ SWFUpload.speed.calculateMovingAverage = function (history) {\r
+ var vals = [], size, sum = 0.0, mean = 0.0, varianceTemp = 0.0, variance = 0.0, standardDev = 0.0;\r
+ var i;\r
+ var mSum = 0, mCount = 0;\r
+ \r
+ size = history.length;\r
+ \r
+ // Check for sufficient data\r
+ if (size >= 8) {\r
+ // Clone the array and Calculate sum of the values \r
+ for (i = 0; i < size; i++) {\r
+ vals[i] = history[i];\r
+ sum += vals[i];\r
+ }\r
+\r
+ mean = sum / size;\r
+\r
+ // Calculate variance for the set\r
+ for (i = 0; i < size; i++) {\r
+ varianceTemp += Math.pow((vals[i] - mean), 2);\r
+ }\r
+\r
+ variance = varianceTemp / size;\r
+ standardDev = Math.sqrt(variance);\r
+ \r
+ //Standardize the Data\r
+ for (i = 0; i < size; i++) {\r
+ vals[i] = (vals[i] - mean) / standardDev;\r
+ }\r
+\r
+ // Calculate the average excluding outliers\r
+ var deviationRange = 2.0;\r
+ for (i = 0; i < size; i++) {\r
+ \r
+ if (vals[i] <= deviationRange && vals[i] >= -deviationRange) {\r
+ mCount++;\r
+ mSum += history[i];\r
+ }\r
+ }\r
+ \r
+ } else {\r
+ // Calculate the average (not enough data points to remove outliers)\r
+ mCount = size;\r
+ for (i = 0; i < size; i++) {\r
+ mSum += history[i];\r
+ }\r
+ }\r
+\r
+ return mSum / mCount;\r
+ };\r
+ \r
+}
\ No newline at end of file
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