Add scalable video setting (#236)

* Add scalableVideo option

... to enable disabling scalable video. Scalable video is enabled by default.

* Rev version

* Set Publisher scalableVideo option to false

This improves testQuality() results.

README.md

@@ -249,6 +249,11 @@ The `OTNetworkTest()` constructor includes the following parameters:
     in OpenTok.js). For more information, please check the 
     [IP Proxy Documentation](https://tokbox.com/developer/guides/ip-proxy/).
 
+  * `scalableVideo` (Boolean) -- (Optional) Whether to use
+    [scalable video](https://tokbox.com/developer/guides/scalable-video/)
+    (`true`) or not (`false`, the default). Disabling scalable video
+    was added in OpenTok.js version 2.24.7.
+
   The `options` parameter is optional.
 
 The constructor throws an Error object with a `message` property and a `name` property. The

package.json

@@ -1,6 +1,6 @@
 {
   "name": "opentok-network-test-js",
-  "version": "2.4.5",
+  "version": "2.5.0",
   "description": "Precall network test for applications using the OpenTok platform.",
   "main": "dist/NetworkTest/index.js",
   "types": "dist/NetworkTest/index.d.ts",

src/NetworkTest/index.ts

@@ -35,6 +35,7 @@ export interface NetworkTestOptions {
   videoSource?: string;
   initSessionOptions?: OT.InitSessionOptions;
   proxyServerUrl?: string;
+  scalableVideo?: boolean;
 }
 
 export default class NetworkTest {

src/NetworkTest/testConnectivity/index.ts

@@ -165,6 +165,7 @@ function checkCreateLocalPublisher(
           height: '100%',
           insertMode: 'append',
           showControls: false,
+          scalableVideo: false,
         };
         if (options && options.audioSource) {
           publisherOptions.audioSource = options.audioSource;
@@ -181,6 +182,9 @@ function checkCreateLocalPublisher(
         if (!Object.keys(availableDevices.video).length) {
           publisherOptions.videoSource = null;
         }
+        if (options && options.scalableVideo) {
+          publisherOptions.scalableVideo = options.scalableVideo;
+        }
         const publisher = OT.initPublisher(publisherDiv, publisherOptions, (error?: OT.OTError) => {
           if (!error) {
             resolve({ publisher });

src/NetworkTest/types/opentok/publisher.ts

@@ -63,6 +63,7 @@ export interface PublisherProperties extends WidgetProperties, GetUserMediaPrope
     '320x240' |
     '320x180'
   );
+  scalableVideo?: boolean;
   style?: Partial<PublisherStyle>;
   usePreviousDeviceSelection?: boolean;
   videoSource?: string | null;