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- /*
- * Copyright (c) Contributors, http://opensimulator.org/
- * See CONTRIBUTORS.TXT for a full list of copyright holders.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of the OpenSim Project nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- using System;
- using System.Reflection;
- using System.Threading;
- using System.Collections.Generic;
- using log4net;
- using Nini.Config;
- using OpenMetaverse;
- using OpenMetaverse.Imaging;
- using OpenSim.Region.Environment.Interfaces;
- using OpenSim.Region.Environment.Scenes;
- namespace OpenSim.Region.Environment.Modules.Agent.TextureSender
- {
- public class J2KDecoderModule : IRegionModule, IJ2KDecoder
- {
- #region IRegionModule Members
- private static readonly ILog m_log
- = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
- /// <summary>
- /// Cached Decoded Layers
- /// </summary>
- private readonly Dictionary<UUID, OpenJPEG.J2KLayerInfo[]> m_cacheddecode = new Dictionary<UUID, OpenJPEG.J2KLayerInfo[]>();
- /// <summary>
- /// List of client methods to notify of results of decode
- /// </summary>
- private readonly Dictionary<UUID, List<DecodedCallback>> m_notifyList = new Dictionary<UUID, List<DecodedCallback>>();
- public void Initialise(Scene scene, IConfigSource source)
- {
- scene.RegisterModuleInterface<IJ2KDecoder>(this);
- }
- public void PostInitialise()
- {
-
- }
- public void Close()
- {
-
- }
- public string Name
- {
- get { return "J2KDecoderModule"; }
- }
- public bool IsSharedModule
- {
- get { return true; }
- }
- #endregion
- #region IJ2KDecoder Members
- public void decode(UUID AssetId, byte[] assetData, DecodedCallback decodedReturn)
- {
- // Dummy for if decoding fails.
- OpenJPEG.J2KLayerInfo[] result = new OpenJPEG.J2KLayerInfo[0];
- // Check if it's cached
- bool cached = false;
- lock (m_cacheddecode)
- {
- if (m_cacheddecode.ContainsKey(AssetId))
- {
- cached = true;
- result = m_cacheddecode[AssetId];
- }
- }
- // If it's cached, return the cached results
- if (cached)
- {
- decodedReturn(AssetId, result);
- }
- else
- {
- // not cached, so we need to decode it
- // Add to notify list and start decoding.
- // Next request for this asset while it's decoding will only be added to the notify list
- // once this is decoded, requests will be served from the cache and all clients in the notifylist will be updated
- bool decode = false;
- lock (m_notifyList)
- {
- if (m_notifyList.ContainsKey(AssetId))
- {
- m_notifyList[AssetId].Add(decodedReturn);
- }
- else
- {
- List<DecodedCallback> notifylist = new List<DecodedCallback>();
- notifylist.Add(decodedReturn);
- m_notifyList.Add(AssetId, notifylist);
- decode = true;
- }
- }
- // Do Decode!
- if (decode)
- {
- doJ2kDecode(AssetId, assetData);
- }
- }
- }
- #endregion
- /// <summary>
- /// Decode Jpeg2000 Asset Data
- /// </summary>
- /// <param name="AssetId">UUID of Asset</param>
- /// <param name="j2kdata">Byte Array Asset Data </param>
- private void doJ2kDecode(UUID AssetId, byte[] j2kdata)
- {
- int DecodeTime = 0;
- DecodeTime = System.Environment.TickCount;
- OpenJPEG.J2KLayerInfo[] layers = new OpenJPEG.J2KLayerInfo[0]; // Dummy result for if it fails. Informs that there's only full quality
- try
- {
- AssetTexture texture = new AssetTexture(AssetId, j2kdata);
- if (texture.DecodeLayerBoundaries())
- {
- bool sane = true;
- // Sanity check all of the layers
- for (int i = 0; i < texture.LayerInfo.Length; i++)
- {
- if (texture.LayerInfo[i].End > texture.AssetData.Length)
- {
- sane = false;
- break;
- }
- }
-
- if (sane)
- {
- layers = texture.LayerInfo;
- }
- else
- {
- m_log.WarnFormat("[J2KDecoderModule]: JPEG2000 texture decoding succeeded, but sanity check failed for {0}",
- AssetId);
- }
- }
-
- else
- {
- m_log.WarnFormat("[J2KDecoderModule]: JPEG2000 texture decoding failed for {0}", AssetId);
- }
- texture = null; // dereference and dispose of ManagedImage
- }
- catch (Exception ex)
- {
- m_log.WarnFormat("[J2KDecoderModule]: JPEG2000 texture decoding threw an exception for {0}, {1}", AssetId, ex);
- }
- // Write out decode time
- m_log.InfoFormat("[J2KDecoderModule]: {0} Decode Time: {1}", System.Environment.TickCount - DecodeTime, AssetId);
-
- // Cache Decoded layers
- lock (m_cacheddecode)
- {
- m_cacheddecode.Add(AssetId, layers);
- }
- // Notify Interested Parties
- lock (m_notifyList)
- {
- if (m_notifyList.ContainsKey(AssetId))
- {
- foreach (DecodedCallback d in m_notifyList[AssetId])
- {
- if (d != null)
- d.DynamicInvoke(AssetId, layers);
- }
- m_notifyList.Remove(AssetId);
- }
- }
- }
- }
- }
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