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[Imagery] Add example imagery
Add a telemetry source for example imagery to support development of a view for image telemetry, WTD-1170.
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example/imagery
42
example/imagery/bundle.json
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42
example/imagery/bundle.json
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{
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"name": "Imagery",
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"description": "Example of a component that produces image telemetry.",
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"extensions": {
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"components": [
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{
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"implementation": "ImageTelemetryProvider.js",
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"type": "provider",
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"provides": "telemetryService",
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"depends": [ "$q", "$timeout" ]
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}
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],
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"types": [
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{
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"key": "imagery",
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"name": "Example Imagery",
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"glyph": "T",
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"features": "creation",
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"model": {
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"telemetry": {}
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},
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"telemetry": {
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"source": "imagery",
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"domains": [
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{
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"name": "Time",
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"key": "time",
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"format": "timestamp"
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}
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],
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"ranges": [
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{
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"name": "Image",
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"key": "url",
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"format": "imageUrl"
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}
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]
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}
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}
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]
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}
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}
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66
example/imagery/src/ImageTelemetry.js
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66
example/imagery/src/ImageTelemetry.js
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/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define,Promise*/
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/**
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* Module defining SinewaveTelemetry. Created by vwoeltje on 11/12/14.
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*/
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define(
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[],
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function () {
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"use strict";
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var firstObservedTime = Date.now(),
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images = [
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"http://www.nasa.gov/393811main_Palomar_ao_bouchez_10s_after_impact_4x3_946-710.png",
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"http://www.nasa.gov/393821main_Palomar_ao_bouchez_15s_after_impact_4x3_946-710.png",
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"http://www.nasa.gov/images/content/393801main_CfhtVeillet2_4x3_516-387.jpg",
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"http://www.nasa.gov/images/content/392790main_1024_768_GeminiNorth_NightBeforeImpact_946-710.jpg"
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].map(function (url, index) {
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return {
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timestamp: firstObservedTime + 1000 * index,
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url: url
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};
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});
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/**
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*
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* @constructor
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*/
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function ImageTelemetry() {
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return {
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getPointCount: function () {
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return Math.floor((Date.now() - firstObservedTime) / 1000);
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},
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getDomainValue: function (i, domain) {
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return images[i % images.length].timestamp;
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},
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getRangeValue: function (i, range) {
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return images[i % images.length].url;
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}
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};
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}
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return ImageTelemetry;
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}
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);
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115
example/imagery/src/ImageTelemetryProvider.js
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115
example/imagery/src/ImageTelemetryProvider.js
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/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define,Promise*/
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/**
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* Module defining SinewaveTelemetryProvider. Created by vwoeltje on 11/12/14.
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*/
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define(
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["./ImageTelemetry"],
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function (ImageTelemetry) {
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"use strict";
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/**
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*
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* @constructor
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*/
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function ImageTelemetryProvider($q, $timeout) {
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var subscriptions = [];
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//
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function matchesSource(request) {
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return request.source === "imagery";
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}
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// Used internally; this will be repacked by doPackage
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function generateData(request) {
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return {
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key: request.key,
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telemetry: new ImageTelemetry()
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};
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}
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//
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function doPackage(results) {
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var packaged = {};
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results.forEach(function (result) {
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packaged[result.key] = result.telemetry;
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});
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// Format as expected (sources -> keys -> telemetry)
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return { imagery: packaged };
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}
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function requestTelemetry(requests) {
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return $timeout(function () {
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return doPackage(requests.filter(matchesSource).map(generateData));
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}, 0);
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}
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function handleSubscriptions() {
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subscriptions.forEach(function (subscription) {
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var requests = subscription.requests;
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subscription.callback(doPackage(
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requests.filter(matchesSource).map(generateData)
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));
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});
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}
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function startGenerating() {
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$timeout(function () {
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handleSubscriptions();
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if (subscriptions.length > 0) {
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startGenerating();
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}
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}, 1000);
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}
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function subscribe(callback, requests) {
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var subscription = {
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callback: callback,
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requests: requests
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};
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function unsubscribe() {
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subscriptions = subscriptions.filter(function (s) {
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return s !== subscription;
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});
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}
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subscriptions.push(subscription);
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if (subscriptions.length === 1) {
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startGenerating();
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}
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return unsubscribe;
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}
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return {
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requestTelemetry: requestTelemetry,
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subscribe: subscribe
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};
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}
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return ImageTelemetryProvider;
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}
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);
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