425 lines
16 KiB
C#
425 lines
16 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The design of this map service is based on SimianGrid's PHP-based
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* map service. See this URL for the original PHP version:
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* https://github.com/openmetaversefoundation/simiangrid/
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*/
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using log4net;
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using Nini.Config;
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using OpenMetaverse;
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using OpenSim.Framework;
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using OpenSim.Services.Interfaces;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Reflection;
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using System.Threading;
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namespace OpenSim.Services.MapImageService
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{
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public class MapImageService : IMapImageService
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{
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private static readonly ILog m_log = LogManager.GetLogger( MethodBase.GetCurrentMethod().DeclaringType);
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#pragma warning disable 414
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private string LogHeader = "[MAP IMAGE SERVICE]";
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#pragma warning restore 414
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private const int ZOOM_LEVELS = 8;
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private const int IMAGE_WIDTH = 256;
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private const int HALF_WIDTH = 128;
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private const int JPEG_QUALITY = 80;
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private static string m_TilesStoragePath = "maptiles";
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private static object m_Sync = new object();
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private static bool m_Initialized = false;
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private static Color m_Watercolor = Color.FromArgb(29, 72, 96);
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private static Bitmap m_WaterBitmap = null;
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private static byte[] m_WaterJPEGBytes = null;
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public MapImageService(IConfigSource config)
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{
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lock (m_Sync)
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{
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if (!m_Initialized)
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{
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m_Initialized = true;
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m_log.Debug("[MAP IMAGE SERVICE]: Starting MapImage service");
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IConfig serviceConfig = config.Configs["MapImageService"];
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if (serviceConfig is not null)
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{
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m_TilesStoragePath = serviceConfig.GetString("TilesStoragePath", m_TilesStoragePath);
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//memory cache JPEG tile with just water.
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m_WaterBitmap = new Bitmap(IMAGE_WIDTH, IMAGE_WIDTH, PixelFormat.Format24bppRgb);
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FillImage(m_WaterBitmap, m_Watercolor);
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using (MemoryStream ms = new MemoryStream())
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{
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m_WaterBitmap.Save(ms, ImageFormat.Jpeg);
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ms.Seek(0, SeekOrigin.Begin);
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m_WaterJPEGBytes = ms.ToArray();
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}
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}
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}
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}
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}
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#region IMapImageService
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public bool AddMapTile(int x, int y, byte[] imageData, UUID scopeID, out string reason)
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{
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reason = string.Empty;
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ReadOnlySpan<char> path = GetFolder(scopeID);
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string fileName = GetFileName(1, x, y, path);
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lock (m_Sync)
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{
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try
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{
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File.WriteAllBytes(fileName, imageData);
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}
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catch (Exception e)
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{
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m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to save image file {0}: {1}", fileName, e);
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reason = e.Message;
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return false;
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}
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}
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return UpdateMultiResolutionFiles(x, y, scopeID);
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}
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public bool RemoveMapTile(int x, int y, UUID scopeID, out string reason)
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{
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reason = string.Empty;
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string fileName = GetFileName(1, x, y, scopeID);
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lock (m_Sync)
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{
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try
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{
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File.Delete(fileName);
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}
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catch (Exception e)
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{
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m_log.Warn($"[MAP IMAGE SERVICE]: Unable to save delete file {fileName}: {e.Message}");
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reason = e.Message;
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return false;
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}
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}
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return UpdateMultiResolutionFiles(x, y, scopeID);
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}
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// When large varregions start up, they can send piles of new map tiles. This causes
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// this multi-resolution routine to be called a zillion times an causes much CPU
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// time to be spent creating multi-resolution tiles that will be replaced when
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// the next maptile arrives.
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private struct MapToMultiRez
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{
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public int x;
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public int y;
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public UUID scopeID;
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}
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private readonly Queue<MapToMultiRez> m_MultiRezToBuild = new Queue<MapToMultiRez>();
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private bool UpdateMultiResolutionFiles(int x, int y, UUID scopeID)
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{
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lock (m_MultiRezToBuild)
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{
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// m_log.DebugFormat("{0} UpdateMultiResolutionFilesAsync: scheduling update for <{1},{2}>", LogHeader, x, y);
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m_MultiRezToBuild.Enqueue(
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new MapToMultiRez
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{
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x = x,
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y = y,
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scopeID = scopeID
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}
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);
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if (m_MultiRezToBuild.Count == 1)
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Util.FireAndForget(DoUpdateMultiResolutionFilesAsync);
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}
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return true;
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}
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private void DoUpdateMultiResolutionFilesAsync(object o)
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{
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// let acumulate large region tiles
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Thread.Sleep(60 * 1000); // large regions take time to upload tiles
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while (true)
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{
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MapToMultiRez toMultiRez;
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lock (m_MultiRezToBuild)
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{
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if(!m_MultiRezToBuild.TryDequeue(out toMultiRez))
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return;
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}
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ReadOnlySpan<char> path = GetFolder(toMultiRez.scopeID);
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for (int zoomLevel = 2; zoomLevel <= ZOOM_LEVELS; zoomLevel++)
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{
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if (!CreateTile(zoomLevel, toMultiRez.x, toMultiRez.y, path))
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{
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m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to create tile for {0},{1} at zoom level {1}", toMultiRez.x, toMultiRez.y, zoomLevel);
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return;
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}
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}
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Thread.Sleep(50); // slow things a bit
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}
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}
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public byte[] GetMapTile(string fileName, UUID scopeID, out string format)
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{
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//m_log.DebugFormat("[MAP IMAGE SERVICE]: Getting map tile {0}", fileName);
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string fullName = Path.Combine(m_TilesStoragePath, scopeID.ToString());
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fullName = Path.Combine(fullName, fileName);
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try
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{
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lock (m_Sync)
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{
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format = Path.GetExtension(fileName).ToLower();
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//m_log.DebugFormat("[MAP IMAGE SERVICE]: Found file {0}, extension {1}", fileName, format);
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return File.ReadAllBytes(fullName);
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}
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}
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catch
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{
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format = ".jpg";
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return m_WaterJPEGBytes is null ? Array.Empty<byte>() : m_WaterJPEGBytes;
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}
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}
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#endregion
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private string GetFileName(int zoomLevel, int x, int y, UUID scopeID)
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{
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string path = Path.Combine(m_TilesStoragePath, scopeID.ToString());
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return Path.Combine(path, string.Format("map-{0}-{1}-{2}-objects.{3}", zoomLevel, x, y, "jpg"));
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}
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private string GetFileName(int zoomLevel, int x, int y, ReadOnlySpan<char> path)
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{
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return Path.Combine(path.ToString(), string.Format("map-{0}-{1}-{2}-objects.{3}", zoomLevel, x, y, "jpg"));
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}
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private string GetFolder(UUID scopeID)
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{
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string path = Path.Combine(m_TilesStoragePath, scopeID.ToString());
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Directory.CreateDirectory(path);
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return path;
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}
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private Bitmap GetInputTileImage(string fileName)
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{
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try
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{
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lock(m_Sync)
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{
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if (File.Exists(fileName))
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{
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Bitmap bm = new Bitmap(fileName);
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if (bm.Width != IMAGE_WIDTH || bm.Height != IMAGE_WIDTH || bm.PixelFormat != PixelFormat.Format24bppRgb)
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{
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m_log.Error($"[MAP IMAGE SERVICE]: invalid map tile {fileName}: {bm.Width} , {bm.Height}, {bm.PixelFormat}");
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bm.Dispose();
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return null;
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}
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return bm;
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}
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}
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}
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catch (Exception e)
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{
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m_log.Warn($"[MAP IMAGE SERVICE]: Unable to read image data from {fileName}: {e.Message}");
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}
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return null;
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}
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private Bitmap GetOutputTileImage(string fileName)
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{
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try
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{
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lock(m_Sync)
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{
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return File.Exists(fileName) ? new Bitmap(fileName) : new Bitmap(IMAGE_WIDTH, IMAGE_WIDTH, PixelFormat.Format24bppRgb);
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}
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}
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catch (Exception e)
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{
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m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to read image data from {0}: {1}", fileName, e);
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}
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return null;
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}
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private bool CreateTile(int zoomLevel, int inx, int iny, ReadOnlySpan<char> path)
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{
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int previusLevel = zoomLevel - 1;
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int prevStep = 1 << previusLevel - 1;
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int mask = unchecked((int)0xffffffff) << previusLevel;
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// Convert x and y to the bottom left of current tile
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int x = inx & mask;
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int y = iny & mask;
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int ntiles = 0;
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Bitmap output = (Bitmap)m_WaterBitmap.Clone();
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Bitmap input = GetInputTileImage(GetFileName(previusLevel, x, y, path));
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if (input is not null)
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{
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ImageCopyResampled(output, input, 0, HALF_WIDTH);
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input.Dispose();
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ntiles++;
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}
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input = GetInputTileImage(GetFileName(previusLevel, x + prevStep, y, path));
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if (input is not null)
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{
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ImageCopyResampled(output, input, HALF_WIDTH, HALF_WIDTH);
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input.Dispose();
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ntiles++;
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}
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input = GetInputTileImage(GetFileName(previusLevel, x, y + prevStep, path));
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if (input is not null)
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{
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ImageCopyResampled(output, input, 0, 0);
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input.Dispose();
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ntiles++;
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}
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input = GetInputTileImage(GetFileName(previusLevel, x + prevStep, y + prevStep, path));
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if (input is not null)
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{
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ImageCopyResampled(output, input, HALF_WIDTH, 0);
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input.Dispose();
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ntiles++;
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}
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string outputFile = GetFileName(zoomLevel, x, y, path);
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try
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{
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lock(m_Sync)
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{
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File.Delete(outputFile);
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if (ntiles > 0)
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output.Save(outputFile, ImageFormat.Jpeg);
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}
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}
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catch (Exception e)
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{
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m_log.Warn($"[MAP IMAGE SERVICE]: Oops on saving {outputFile} {e.Message}");
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}
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output.Dispose();
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return true;
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}
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#region Image utilities
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private void FillImage(Bitmap bm, Color c)
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{
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BitmapData srcData = bm.LockBits(new Rectangle(0, 0, bm.Width, bm.Height), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
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byte r = c.R;
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byte g = c.G;
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byte b = c.B;
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unsafe
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{
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byte* ptr = (byte*)srcData.Scan0;
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for(int y = 0; y < bm.Height; y++)
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{
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for(int x = 0; x < bm.Width; x++)
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{
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*ptr++ = b;
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*ptr++ = g;
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*ptr++ = r;
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}
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}
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}
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bm.UnlockBits(srcData);
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}
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private void ImageCopyResampled(Bitmap output, Bitmap input, int destX, int destY)
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{
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try
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{
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BitmapData srcData = input.LockBits(new Rectangle(0, 0, input.Width, input.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
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BitmapData dstData = output.LockBits(new Rectangle(0, 0, output.Width, output.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
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unsafe
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{
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byte* srcPointer = (byte*)srcData.Scan0;
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byte* srcPointer2 = (byte*)srcData.Scan0 + srcData.Stride;
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byte* dstPointer = (byte*)dstData.Scan0 + destY * dstData.Stride + 3 * destX;
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for (int y = 0; y < HALF_WIDTH; y++)
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{
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byte* dxptr = dstPointer;
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for (int i = 0; i < HALF_WIDTH; i++)
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{
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// Blue
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int t = srcPointer[0] + srcPointer[3] + srcPointer2[0] + srcPointer2[3];
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dxptr[0] = (byte)(t >> 2);
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// Green
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t = srcPointer[1] + srcPointer[4] + srcPointer2[1] + srcPointer2[4];
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dxptr[1] = (byte)(t >> 2);
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// Red
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t = srcPointer[2] + srcPointer[5] + srcPointer2[2] + srcPointer2[5];
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dxptr[2] = (byte)(t >> 2);
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/*
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dxptr[0] = srcPointer[0]; // Blue
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dxptr[1] = srcPointer[1]; // Green
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dxptr[2] = srcPointer[2]; // Red
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*/
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srcPointer += 6; // skip one point
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srcPointer2 += 6; // skip one point
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dxptr += 3;
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}
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srcPointer += srcData.Stride; // skip extra line
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srcPointer2 += srcData.Stride;
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dstPointer += dstData.Stride;
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}
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}
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output.UnlockBits(dstData);
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input.UnlockBits(srcData);
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}
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//catch (InvalidOperationException e)
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catch
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{
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}
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}
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#endregion
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}
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}
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