disable threaded upate for theora streaming sound

src/Audio/AudioDevice.cs

@@ -27,7 +27,7 @@ namespace MoonWorks.Audio
 		}
 
 		private readonly HashSet<WeakReference> resources = new HashSet<WeakReference>();
-		private readonly HashSet<WeakReference> streamingSoundReferences = new HashSet<WeakReference>();
+		private readonly HashSet<WeakReference> autoUpdateStreamingSoundReferences = new HashSet<WeakReference>();
 
 		private AudioTweenManager AudioTweenManager;
 
@@ -150,16 +150,15 @@ namespace MoonWorks.Audio
 			previousTickTime = TickStopwatch.Elapsed.Ticks;
 			float elapsedSeconds = (float) tickDelta / System.TimeSpan.TicksPerSecond;
 
-			foreach (var weakReference in streamingSoundReferences)
+			foreach (var weakReference in autoUpdateStreamingSoundReferences)
 			{
-				var target = weakReference.Target;
-				if (target == null)
+				if (weakReference.Target is StreamingSound streamingSound)
 				{
-					streamingSoundReferences.Remove(weakReference);
+					streamingSound.Update();
 				}
 				else
 				{
-					(target as StreamingSound).Update();
+					autoUpdateStreamingSoundReferences.Remove(weakReference);
 				}
 			}
 
@@ -171,7 +170,6 @@ namespace MoonWorks.Audio
 			FAudio.FAudio_CommitChanges(Handle, 1);
 		}
 
-
 		internal void CreateTween(
 			SoundInstance soundInstance,
 			AudioTweenProperty property,
@@ -206,9 +204,9 @@ namespace MoonWorks.Audio
 			{
 				resources.Add(resource.weakReference);
 
-				if (resource is StreamingSound streamingSound)
+				if (resource is StreamingSound streamingSound && streamingSound.AutoUpdate)
 				{
-					AddDynamicSoundInstance(streamingSound);
+					AddAutoUpdateStreamingSoundInstance(streamingSound);
 				}
 			}
 		}
@@ -219,21 +217,21 @@ namespace MoonWorks.Audio
 			{
 				resources.Remove(resource.weakReference);
 
-				if (resource is StreamingSound streamingSound)
+				if (resource is StreamingSound streamingSound && streamingSound.AutoUpdate)
 				{
-					RemoveDynamicSoundInstance(streamingSound);
+					RemoveAutoUpdateStreamingSoundInstance(streamingSound);
 				}
 			}
 		}
 
-		private void AddDynamicSoundInstance(StreamingSound instance)
+		private void AddAutoUpdateStreamingSoundInstance(StreamingSound instance)
 		{
-			streamingSoundReferences.Add(instance.weakReference);
+			autoUpdateStreamingSoundReferences.Add(instance.weakReference);
 		}
 
-		private void RemoveDynamicSoundInstance(StreamingSound instance)
+		private void RemoveAutoUpdateStreamingSoundInstance(StreamingSound instance)
 		{
-			streamingSoundReferences.Remove(instance.weakReference);
+			autoUpdateStreamingSoundReferences.Remove(instance.weakReference);
 		}
 
 		protected virtual void Dispose(bool disposing)

src/Audio/AudioTweenManager.cs

@@ -20,6 +20,7 @@ namespace MoonWorks.Audio
 
 					if (audioTween.Time >= audioTween.DelayTime)
 					{
+						// set the tween start value to the current value of the property
 						switch (audioTween.Property)
 						{
 							case AudioTweenProperty.Pan:
@@ -104,6 +105,7 @@ namespace MoonWorks.Audio
 		private void AddTween(
 			AudioTween audioTween
 		) {
+			// if a tween with the same sound and property already exists, get rid of it
 			if (AudioTweens.TryGetValue((audioTween.SoundInstanceReference, audioTween.Property), out var currentTween))
 			{
 				AudioTweenPool.Free(currentTween);

src/Audio/StreamingSound.cs

@@ -13,6 +13,9 @@ namespace MoonWorks.Audio
 		// How big should each buffer we consume be?
 		protected abstract int BUFFER_SIZE { get; }
 
+		// Should the AudioDevice thread automatically update this class?
+		public abstract bool AutoUpdate { get; }
+
 		// Are we actively consuming buffers?
 		protected bool ConsumingBuffers = false;
 

src/Audio/StreamingSoundOgg.cs

@@ -11,6 +11,7 @@ namespace MoonWorks.Audio
 		private FAudio.stb_vorbis_info Info;
 
 		protected override int BUFFER_SIZE => 32768;
+		public override bool AutoUpdate => true;
 
 		public unsafe static StreamingSoundOgg Load(AudioDevice device, string filePath)
 		{

src/Video/StreamingSoundTheora.cs

@@ -7,6 +7,8 @@ namespace MoonWorks.Video
 	{
 		private IntPtr VideoHandle;
 		protected override int BUFFER_SIZE => 8192;
+		// Theorafile is not thread safe, so let's update on the main thread.
+		public override bool AutoUpdate => false;
 
 		internal StreamingSoundTheora(
 			AudioDevice device,

src/Video/VideoPlayer.cs

@@ -124,12 +124,9 @@ namespace MoonWorks.Video
 
 				Video = video;
 
-				lock (AudioDevice.StateLock)
-				{
 				InitializeTheoraStream();
 			}
 		}
-		}
 
 		public void Play()
 		{
@@ -184,12 +181,9 @@ namespace MoonWorks.Video
 			lastTimestamp = 0;
 			timeElapsed = 0;
 
-			lock (AudioDevice.StateLock)
-			{
 			DestroyAudioStream();
 
 			Theorafile.tf_reset(Video.Handle);
-			}
 
 			State = VideoState.Stopped;
 		}
@@ -200,6 +194,16 @@ namespace MoonWorks.Video
 			Video = null;
 		}
 
+		public void Update()
+		{
+			if (Video == null) { return; }
+
+			if (audioStream != null)
+			{
+				audioStream.Update();
+			}
+		}
+
 		public void Render()
 		{
 			if (Video == null || State == VideoState.Stopped)
@@ -207,9 +211,6 @@ namespace MoonWorks.Video
 				return;
 			}
 
-			// Theorafile is not thread safe so we have to do this. Fun!
-			lock (AudioDevice.StateLock)
-			{
 			timeElapsed += (timer.Elapsed.TotalMilliseconds - lastTimestamp) * PlaybackSpeed;
 			lastTimestamp = timer.Elapsed.TotalMilliseconds;
 
@@ -251,7 +252,6 @@ namespace MoonWorks.Video
 				}
 			}
 		}
-		}
 
 		private void UpdateRenderTexture()
 		{