* Adds a synchronous jpeg decode for pre-caching purposes

* When the DynamicTextureModule creates a j2k image, pre-cache the decode so that it doesn't stall any client threads.

OpenSim/Region/Environment/Interfaces/IJ2KDecoder.cs

@@ -36,5 +36,6 @@ namespace OpenSim.Region.Environment.Interfaces
     public interface IJ2KDecoder
     {
         void decode(UUID AssetId, byte[] assetData, DecodedCallback decodedReturn);
+        void syncdecode(UUID AssetId, byte[] j2kdata);
     }
 }

OpenSim/Region/Environment/Modules/Agent/TextureSender/J2KDecoderModule.cs

@@ -146,6 +146,16 @@ namespace OpenSim.Region.Environment.Modules.Agent.TextureSender
             }
         }
 
+        /// <summary>
+        /// Provides a synchronous decode so that caller can be assured that this executes before the next line
+        /// </summary>
+        /// <param name="AssetId"></param>
+        /// <param name="j2kdata"></param>
+        public void syncdecode(UUID AssetId, byte[] j2kdata)
+        {
+            doJ2kDecode(AssetId, j2kdata);
+        }
+
         #endregion
 
         /// <summary>

OpenSim/Region/Environment/Modules/Scripting/DynamicTexture/DynamicTextureModule.cs

@@ -242,6 +242,13 @@ namespace OpenSim.Region.Environment.Modules.Scripting.DynamicTexture
 
                 LastAssetID = asset.FullID;
 
+                IJ2KDecoder cacheLayerDecode = scene.RequestModuleInterface<IJ2KDecoder>();
+                if (cacheLayerDecode != null)
+                {
+                    cacheLayerDecode.syncdecode(asset.FullID, asset.Data);
+                }
+                cacheLayerDecode = null;
+
                 // mostly keep the values from before
                 Primitive.TextureEntry tmptex = part.Shape.Textures;