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Assets/AVProVideo/Runtime/Scripts/Internal/Events.cs

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+using UnityEngine.Events;
+using System.Collections.Generic;
+
+//-----------------------------------------------------------------------------
+// Copyright 2015-2021 RenderHeads Ltd.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace RenderHeads.Media.AVProVideo
+{
+	[System.Serializable]
+	public class MediaPlayerLoadEvent : UnityEvent<string> {}
+
+	[System.Serializable]
+	public class MediaPlayerEvent : UnityEvent<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode>
+	{
+		public enum EventType
+		{
+			MetaDataReady,      	// Triggered when meta data(width, duration etc) is available
+			ReadyToPlay,        	// Triggered when the video is loaded and ready to play
+			Started,            	// Triggered when the playback starts
+			FirstFrameReady,    	// Triggered when the first frame has been rendered
+			FinishedPlaying,    	// Triggered when a non-looping video has finished playing
+			Closing,            	// Triggered when the media is closed
+			Error,              	// Triggered when an error occurs
+			SubtitleChange,     	// Triggered when the subtitles change
+			Stalled,            	// Triggered when media is stalled (eg. when lost connection to media stream)
+			Unstalled,          	// Triggered when media is resumed form a stalled state (eg. when lost connection is re-established)
+			ResolutionChanged,  	// Triggered when the resolution of the video has changed (including the load) Useful for adaptive streams
+			StartedSeeking,     	// Triggered when seeking begins
+			FinishedSeeking,    	// Triggered when seeking has finished
+			StartedBuffering,   	// Triggered when buffering begins
+			FinishedBuffering,  	// Triggered when buffering has finished
+			PropertiesChanged,  	// Triggered when any properties (eg stereo packing are changed) - this has to be triggered manually
+			PlaylistItemChanged,	// Triggered when the new item is played in the playlist
+			PlaylistFinished,   	// Triggered when the playlist reaches the end
+
+			TextTracksChanged,  	// Triggered when the text tracks are added or removed
+			Paused,             	// Triggered when the player is paused
+			Unpaused,           	// Triggered when the player resumes playing
+
+			TimedMetadataChanged,	// Triggered when the timed metadata changes
+
+			// TODO: 
+			//StartLoop,			// Triggered when the video starts and is in loop mode
+			//EndLoop,				// Triggered when the video ends and is in loop mode
+			//NewFrame				// Trigger when a new video frame is available
+
+			TextCueChanged = SubtitleChange,    // Triggered when the text to display changes
+		}
+
+		private List<UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode>> _listeners = new List<UnityAction<MediaPlayer, EventType, ErrorCode>>(4);
+
+		public bool HasListeners()
+		{
+			return (_listeners.Count > 0) || (GetPersistentEventCount() > 0);
+		}
+
+		new public void AddListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call)
+		{
+			if (!_listeners.Contains(call))
+			{
+				_listeners.Add(call);
+				base.AddListener(call);
+			}
+		}
+
+		new public void RemoveListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call)
+		{
+			int index = _listeners.IndexOf(call);
+			if (index >= 0)
+			{
+				_listeners.RemoveAt(index);
+				base.RemoveListener(call);
+			}
+		}
+
+		new public void RemoveAllListeners()
+		{
+			_listeners.Clear();
+			base.RemoveAllListeners();
+		}
+	}
+
+#if false
+	public interface IMediaEvents
+	{
+		void				AddEventListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call);
+		void				RemoveListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call);
+		void				RemoveAllEventListeners();
+	}
+
+	public partial class BaseMediaPlayer
+	{
+		void AddEventListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call)
+		{
+
+		}
+		void RemoveListener(UnityAction<MediaPlayer, MediaPlayerEvent.EventType, ErrorCode> call)
+		{
+
+		}
+		void RemoveAllEventListeners()
+		{
+
+		}
+
+		private MediaPlayerEvent _eventHandler;
+
+	}
+#endif
+}