feat(FEC-12953): Add configuration option to change the default playl…

…ist image item duration (#607)

Currently the only way to set an image duration while playing a single media is by overriding the duration property, but this is not possible when playing playlist by entry so we need to add configuration option in loadPlaylist() public API

solves FEC-12953

related pr:
kaltura/playkit-js-image-player#10

flow-typed/types/playlist.js

@@ -8,7 +8,8 @@ import {PlaylistItem} from '../../src/common/playlist/playlist-item';
  */
 type _KPPlaylistOptions = {
   autoContinue: boolean,
-  loop: boolean
+  loop: boolean,
+  imageDuration: number
 };
 declare type KPPlaylistOptions = _KPPlaylistOptions;
 

src/common/playlist/playlist-manager.js

@@ -6,8 +6,6 @@ import {Playlist} from './playlist';
 import {PlaylistItem} from './playlist-item';
 import {mergeProviderPluginsConfig} from '../utils/setup-helpers';
 
-const DEFAULT_IMAGE_DURATION = 5;
-
 /**
  * @class PlaylistManager
  * @param {KalturaPlayer} player - The player instance
@@ -28,7 +26,7 @@ class PlaylistManager {
     this._player = player;
     this._eventManager = new EventManager();
     this._playlist = new Playlist();
-    this._options = {autoContinue: true, loop: false};
+    this._options = {autoContinue: true, loop: false, imageDuration: 5};
     this._countdown = {duration: 10, showing: true};
     this._mediaInfoList = [];
     this._playerOptions = options;
@@ -269,7 +267,7 @@ class PlaylistManager {
 
   _onChangeSourceStarted(): void {
     if (this._playlist.items[this._playlist._activeItemIndex].sources?.type === 'Image') {
-      this._player.configure({sources: {duration: DEFAULT_IMAGE_DURATION}});
+      this._player.configure({sources: {duration: this._options.imageDuration}});
     }
   }