From 0c9a368a5ab04ddb16826056b18c49ba1944980a Mon Sep 17 00:00:00 2001
From: Jay Sim <jay@builttoroam.com>
Date: Fri, 14 Jul 2017 13:38:15 +1000
Subject: [PATCH] fix an issue that bufferingchanged event never been fired on
 UWP

---
 MediaManager.UWP/AudioPlayerImplementation.cs   | 11 +++++++++++
 Samples/Simple/MediaSample.UWP/MainPage.xaml.cs |  9 +++++++++
 2 files changed, 20 insertions(+)

diff --git a/MediaManager.UWP/AudioPlayerImplementation.cs b/MediaManager.UWP/AudioPlayerImplementation.cs
index 579bcd1a..ef660e56 100644
--- a/MediaManager.UWP/AudioPlayerImplementation.cs
+++ b/MediaManager.UWP/AudioPlayerImplementation.cs
@@ -79,8 +79,19 @@ public AudioPlayerImplementation(IVolumeManager volumeManager)
             };
 
             _player.MediaEnded += (sender, args) => { MediaFinished?.Invoke(this, new MediaFinishedEventArgs(_currentMediaFile)); };
+
+            _player.PlaybackSession.BufferingStarted += (sender, args) =>
+            {
+                var bufferedTime =
+                    TimeSpan.FromSeconds(sender.BufferingProgress *
+                                         sender.NaturalDuration.TotalSeconds);
+                BufferingChanged?.Invoke(this,
+                    new BufferingChangedEventArgs(sender.BufferingProgress, bufferedTime));
+            };
+
             _player.PlaybackSession.BufferingProgressChanged += (sender, args) =>
             {
+                //This seems not to be fired at all
                 var bufferedTime =
                     TimeSpan.FromSeconds(_player.PlaybackSession.BufferingProgress*
                                          _player.PlaybackSession.NaturalDuration.TotalSeconds);
diff --git a/Samples/Simple/MediaSample.UWP/MainPage.xaml.cs b/Samples/Simple/MediaSample.UWP/MainPage.xaml.cs
index 15cf3978..dedb79b6 100644
--- a/Samples/Simple/MediaSample.UWP/MainPage.xaml.cs
+++ b/Samples/Simple/MediaSample.UWP/MainPage.xaml.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using Windows.ApplicationModel.Core;
 using Windows.UI.Core;
 using Windows.UI.Xaml;
@@ -22,11 +23,19 @@ public MainPage()
         {
             InitializeComponent();
             CrossMediaManager.Current.PlayingChanged += OnPlayingChanged;
+            CrossMediaManager.Current.BufferingChanged += OnBufferingChanged;
             CrossMediaManager.Current.StatusChanged += OnStatusChanged;
             CrossMediaManager.Current.VideoPlayer.RenderSurface = VideoCanvas;
             CrossMediaManager.Current.MediaFileChanged += CurrentOnMediaFileChanged;
         }
 
+        private void OnBufferingChanged(object sender, BufferingChangedEventArgs bufferingChangedEventArgs)
+        {
+            var bufferingProgress = bufferingChangedEventArgs?.BufferProgress ?? 0;
+            var bufferingTime = bufferingChangedEventArgs?.BufferedTime;
+            Debug.WriteLine($"buffering progress: {bufferingProgress}, buffering time: {bufferingTime}");
+        }
+
         private void CurrentOnMediaFileChanged(object sender, MediaFileChangedEventArgs mediaFileChangedEventArgs)
         {
             var mediaFile = mediaFileChangedEventArgs.File;