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/*
* Copyright (c) 2017 Samsung Electronics Co., Ltd
*
* Licensed under the Flora License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://floralicense.org/license/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using Android.Widget;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
using System.ComponentModel;
using VideoPlayerLite.Views;
using System.Threading;
using VideoPlayerLite.Android;
using Android.Util;
[assembly: ExportRenderer(typeof(MediaRenderingView), typeof(MediaRenderingViewRenderer))]
namespace VideoPlayerLite.Android
{
/// <summary>
/// MediaRenderingViewRenderer implements the VideoView Custom Renderer on the Android Platform.
/// </summary>
public class MediaRenderingViewRenderer : ViewRenderer<MediaRenderingView, VideoView>
{
private static readonly string TAG = "VideoViewRenderer";
/// <summary>
/// Timer for updating the playing position on the video player UI.
/// </summary>
private Timer playPositionTimer;
/// <summary>
/// When the Element, which is created on the Xamarin Forms, is changed, this method is going to be invoked.
/// If the control is null, assign Android VideoView to the Control property with the SetNativeControl method.
/// If OldElement is not null, unsubscribe VideoViewCompletion event from event handler.
/// If NewElement is not null, subscribe VideoViewCompletion event to the event handler.
/// </summary>
/// <param name="e">Data of the event</param>
protected override void OnElementChanged(ElementChangedEventArgs<MediaRenderingView> e)
{
base.OnElementChanged(e);
if (Control == null)
{
SetNativeControl(new VideoView(Context));
}
if (e.OldElement != null)
{
Control.Completion -= VideoViewCompletion;
StopTimer();
}
if (e.NewElement != null)
{
Control.Completion += VideoViewCompletion;
StopTimer();
}
}
/// <summary>
/// OnElementPropertyChanged method is called whenever any bindable properties in the MediaRenderingView change MediaRenderingView.
/// PlayingItem property will change VideoPlayer to start with new video item.
/// MediaRenderingView.PlayerStatus property will change when VideoPlayer receive UI control event.
/// </summary>
/// <param name="sender">The object what got the event</param>
/// <param name="e">Data of the event</param>
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == MediaRenderingView.CurrentVideoProperty.PropertyName)
{
((IElementController)Element).SetValueFromRenderer(MediaRenderingView.CurrentStatusProperty, PlayerStatus.Preparing);
StopTimer();
if (Control.IsPlaying)
{
Control.StopPlayback();
}
Control.SetVideoPath(Element.VideoPath);
((IElementController)Element).SetValueFromRenderer(MediaRenderingView.CurrentStatusProperty, PlayerStatus.Playing);
}
else if (e.PropertyName == MediaRenderingView.CurrentStatusProperty.PropertyName)
{
switch (Element.CurrentStatus)
{
case PlayerStatus.Playing:
Control.Start();
StartTimer();
break;
case PlayerStatus.Paused:
Control.Pause();
/// Should pause the timer
StopTimer();
break;
case PlayerStatus.Stopped:
Control.StopPlayback();
Control.SetVideoPath(Element.VideoPath);
StopTimer();
break;
default:
break;
}
}
}
/// <summary>
/// It is called when playing is completed. Then, this method changes player status of mediaRendering view to the stopped status
/// </summary>
/// <param name="sender">The object what got the event</param>
/// <param name="e">Data of the event</param>
private void VideoViewCompletion(object sender, System.EventArgs e)
{
((IElementController)Element).SetValueFromRenderer(MediaRenderingView.CurrentStatusProperty, PlayerStatus.Stopped);
}
/// <summary>
/// Creates new timer for updating plyaing position at VideoPlayer
/// Timer gets current playing position from Android VideoView every 250ms and updates the position.
/// </summary>
private void StartTimer()
{
if (playPositionTimer != null)
{
return;
}
playPositionTimer = new Timer((x) =>
{
Device.BeginInvokeOnMainThread(() =>
{
if (playPositionTimer != null)
{
int playPosition = 0;
try
{
playPosition = (Control != null) ? Control.CurrentPosition : 0;
}
catch (System.Exception e)
{
playPosition = 0;
Log.Error(TAG, "Failed to get current position. ("+e.Message+")");
}
if (Element == null)
{
StopTimer();
}
else
{
((IElementController)Element).SetValueFromRenderer(MediaRenderingView.CurrentPositionProperty, playPosition);
}
}
});
}, null, 0, 250);
}
/// <summary>
/// Destroys the playing position update timer
/// </summary>
private void StopTimer()
{
playPositionTimer?.Dispose();
playPositionTimer = null;
}
}
}
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