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authorDiva Canto2011-05-02 11:56:40 -0700
committerDiva Canto2011-05-02 11:56:40 -0700
commitaba9ffdbd008920f94cfbd7d4ff4a0fa92e92321 (patch)
tree2b5f6db1fcdb88e7492ba9d698dc45c844534cf3 /OpenSim/Capabilities/Handlers/GetTexture
parentWorks! (diff)
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Refactored the GetMesh module into a handler and a module, to be the same as GetTexture.
Diffstat (limited to 'OpenSim/Capabilities/Handlers/GetTexture')
-rw-r--r--OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs357
-rw-r--r--OpenSim/Capabilities/Handlers/GetTexture/GetTextureServerConnector.cs69
2 files changed, 426 insertions, 0 deletions
diff --git a/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
new file mode 100644
index 0000000..00ff3d0
--- /dev/null
+++ b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
@@ -0,0 +1,357 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections;
30using System.Collections.Specialized;
31using System.Drawing;
32using System.Drawing.Imaging;
33using System.Reflection;
34using System.IO;
35using System.Web;
36using log4net;
37using Nini.Config;
38using OpenMetaverse;
39using OpenMetaverse.StructuredData;
40using OpenMetaverse.Imaging;
41using OpenSim.Framework;
42using OpenSim.Framework.Servers;
43using OpenSim.Framework.Servers.HttpServer;
44using OpenSim.Region.Framework.Interfaces;
45using OpenSim.Services.Interfaces;
46using Caps = OpenSim.Framework.Capabilities.Caps;
47
48namespace OpenSim.Capabilities.Handlers
49{
50
51 public class GetTextureHandler : BaseStreamHandler
52 {
53 private static readonly ILog m_log =
54 LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
55 private IAssetService m_assetService;
56
57 public const string DefaultFormat = "x-j2c";
58
59 // TODO: Change this to a config option
60 const string REDIRECT_URL = null;
61
62 public GetTextureHandler(string path, IAssetService assService) :
63 base("GET", path)
64 {
65 m_assetService = assService;
66 }
67
68 public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
69 {
70
71 // Try to parse the texture ID from the request URL
72 NameValueCollection query = HttpUtility.ParseQueryString(httpRequest.Url.Query);
73 string textureStr = query.GetOne("texture_id");
74 string format = query.GetOne("format");
75
76 m_log.DebugFormat("[GETTEXTURE]: called {0}", textureStr);
77
78 if (m_assetService == null)
79 {
80 m_log.Error("[GETTEXTURE]: Cannot fetch texture " + textureStr + " without an asset service");
81 httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
82 return null;
83 }
84
85 UUID textureID;
86 if (!String.IsNullOrEmpty(textureStr) && UUID.TryParse(textureStr, out textureID))
87 {
88 string[] formats;
89 if (format != null && format != string.Empty)
90 {
91 formats = new string[1] { format.ToLower() };
92 }
93 else
94 {
95 formats = WebUtil.GetPreferredImageTypes(httpRequest.Headers.Get("Accept"));
96 if (formats.Length == 0)
97 formats = new string[1] { DefaultFormat }; // default
98
99 }
100 // OK, we have an array with preferred formats, possibly with only one entry
101
102 httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
103 foreach (string f in formats)
104 {
105 if (FetchTexture(httpRequest, httpResponse, textureID, f))
106 break;
107 }
108
109 }
110 else
111 {
112 m_log.Warn("[GETTEXTURE]: Failed to parse a texture_id from GetTexture request: " + httpRequest.Url);
113 }
114
115 httpResponse.Send();
116 return null;
117 }
118
119 /// <summary>
120 ///
121 /// </summary>
122 /// <param name="httpRequest"></param>
123 /// <param name="httpResponse"></param>
124 /// <param name="textureID"></param>
125 /// <param name="format"></param>
126 /// <returns>False for "caller try another codec"; true otherwise</returns>
127 private bool FetchTexture(OSHttpRequest httpRequest, OSHttpResponse httpResponse, UUID textureID, string format)
128 {
129// m_log.DebugFormat("[GETTEXTURE]: {0} with requested format {1}", textureID, format);
130 AssetBase texture;
131
132 string fullID = textureID.ToString();
133 if (format != DefaultFormat)
134 fullID = fullID + "-" + format;
135
136 if (!String.IsNullOrEmpty(REDIRECT_URL))
137 {
138 // Only try to fetch locally cached textures. Misses are redirected
139 texture = m_assetService.GetCached(fullID);
140
141 if (texture != null)
142 {
143 if (texture.Type != (sbyte)AssetType.Texture)
144 {
145 httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
146 return true;
147 }
148 WriteTextureData(httpRequest, httpResponse, texture, format);
149 }
150 else
151 {
152 string textureUrl = REDIRECT_URL + textureID.ToString();
153 m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl);
154 httpResponse.RedirectLocation = textureUrl;
155 return true;
156 }
157 }
158 else // no redirect
159 {
160 // try the cache
161 texture = m_assetService.GetCached(fullID);
162
163 if (texture == null)
164 {
165 //m_log.DebugFormat("[GETTEXTURE]: texture was not in the cache");
166
167 // Fetch locally or remotely. Misses return a 404
168 texture = m_assetService.Get(textureID.ToString());
169
170 if (texture != null)
171 {
172 if (texture.Type != (sbyte)AssetType.Texture)
173 {
174 httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
175 return true;
176 }
177 if (format == DefaultFormat)
178 {
179 WriteTextureData(httpRequest, httpResponse, texture, format);
180 return true;
181 }
182 else
183 {
184 AssetBase newTexture = new AssetBase(texture.ID + "-" + format, texture.Name, (sbyte)AssetType.Texture, texture.Metadata.CreatorID);
185 newTexture.Data = ConvertTextureData(texture, format);
186 if (newTexture.Data.Length == 0)
187 return false; // !!! Caller try another codec, please!
188
189 newTexture.Flags = AssetFlags.Collectable;
190 newTexture.Temporary = true;
191 m_assetService.Store(newTexture);
192 WriteTextureData(httpRequest, httpResponse, newTexture, format);
193 return true;
194 }
195 }
196 }
197 else // it was on the cache
198 {
199 //m_log.DebugFormat("[GETTEXTURE]: texture was in the cache");
200 WriteTextureData(httpRequest, httpResponse, texture, format);
201 return true;
202 }
203 }
204
205 // not found
206// m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
207 httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
208 return true;
209 }
210
211 private void WriteTextureData(OSHttpRequest request, OSHttpResponse response, AssetBase texture, string format)
212 {
213 string range = request.Headers.GetOne("Range");
214 //m_log.DebugFormat("[GETTEXTURE]: Range {0}", range);
215 if (!String.IsNullOrEmpty(range)) // JP2's only
216 {
217 // Range request
218 int start, end;
219 if (TryParseRange(range, out start, out end))
220 {
221 // Before clamping start make sure we can satisfy it in order to avoid
222 // sending back the last byte instead of an error status
223 if (start >= texture.Data.Length)
224 {
225 response.StatusCode = (int)System.Net.HttpStatusCode.RequestedRangeNotSatisfiable;
226 return;
227 }
228
229 end = Utils.Clamp(end, 0, texture.Data.Length - 1);
230 start = Utils.Clamp(start, 0, end);
231 int len = end - start + 1;
232
233 //m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
234
235 if (len < texture.Data.Length)
236 response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent;
237
238 response.ContentLength = len;
239 response.ContentType = texture.Metadata.ContentType;
240 response.AddHeader("Content-Range", String.Format("bytes {0}-{1}/{2}", start, end, texture.Data.Length));
241
242 response.Body.Write(texture.Data, start, len);
243 }
244 else
245 {
246 m_log.Warn("[GETTEXTURE]: Malformed Range header: " + range);
247 response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest;
248 }
249 }
250 else // JP2's or other formats
251 {
252 // Full content request
253 response.StatusCode = (int)System.Net.HttpStatusCode.OK;
254 response.ContentLength = texture.Data.Length;
255 if (format == DefaultFormat)
256 response.ContentType = texture.Metadata.ContentType;
257 else
258 response.ContentType = "image/" + format;
259 response.Body.Write(texture.Data, 0, texture.Data.Length);
260 }
261 }
262
263 private bool TryParseRange(string header, out int start, out int end)
264 {
265 if (header.StartsWith("bytes="))
266 {
267 string[] rangeValues = header.Substring(6).Split('-');
268 if (rangeValues.Length == 2)
269 {
270 if (Int32.TryParse(rangeValues[0], out start) && Int32.TryParse(rangeValues[1], out end))
271 return true;
272 }
273 }
274
275 start = end = 0;
276 return false;
277 }
278
279
280 private byte[] ConvertTextureData(AssetBase texture, string format)
281 {
282 m_log.DebugFormat("[GETTEXTURE]: Converting texture {0} to {1}", texture.ID, format);
283 byte[] data = new byte[0];
284
285 MemoryStream imgstream = new MemoryStream();
286 Bitmap mTexture = new Bitmap(1, 1);
287 ManagedImage managedImage;
288 Image image = (Image)mTexture;
289
290 try
291 {
292 // Taking our jpeg2000 data, decoding it, then saving it to a byte array with regular data
293
294 imgstream = new MemoryStream();
295
296 // Decode image to System.Drawing.Image
297 if (OpenJPEG.DecodeToImage(texture.Data, out managedImage, out image))
298 {
299 // Save to bitmap
300 mTexture = new Bitmap(image);
301
302 EncoderParameters myEncoderParameters = new EncoderParameters();
303 myEncoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 95L);
304
305 // Save bitmap to stream
306 ImageCodecInfo codec = GetEncoderInfo("image/" + format);
307 if (codec != null)
308 {
309 mTexture.Save(imgstream, codec, myEncoderParameters);
310 // Write the stream to a byte array for output
311 data = imgstream.ToArray();
312 }
313 else
314 m_log.WarnFormat("[GETTEXTURE]: No such codec {0}", format);
315
316 }
317 }
318 catch (Exception e)
319 {
320 m_log.WarnFormat("[GETTEXTURE]: Unable to convert texture {0} to {1}: {2}", texture.ID, format, e.Message);
321 }
322 finally
323 {
324 // Reclaim memory, these are unmanaged resources
325 // If we encountered an exception, one or more of these will be null
326 if (mTexture != null)
327 mTexture.Dispose();
328
329 if (image != null)
330 image.Dispose();
331
332 if (imgstream != null)
333 {
334 imgstream.Close();
335 imgstream.Dispose();
336 }
337 }
338
339 return data;
340 }
341
342 // From msdn
343 private static ImageCodecInfo GetEncoderInfo(String mimeType)
344 {
345 ImageCodecInfo[] encoders;
346 encoders = ImageCodecInfo.GetImageEncoders();
347 for (int j = 0; j < encoders.Length; ++j)
348 {
349 if (encoders[j].MimeType == mimeType)
350 return encoders[j];
351 }
352 return null;
353 }
354
355
356 }
357}
diff --git a/OpenSim/Capabilities/Handlers/GetTexture/GetTextureServerConnector.cs b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureServerConnector.cs
new file mode 100644
index 0000000..0335eac
--- /dev/null
+++ b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureServerConnector.cs
@@ -0,0 +1,69 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using Nini.Config;
30using OpenSim.Server.Base;
31using OpenSim.Services.Interfaces;
32using OpenSim.Framework.Servers.HttpServer;
33using OpenSim.Server.Handlers.Base;
34using OpenMetaverse;
35
36namespace OpenSim.Capabilities.Handlers
37{
38 public class GetTextureServerConnector : ServiceConnector
39 {
40 private IAssetService m_AssetService;
41 private string m_ConfigName = "CapsService";
42
43 public GetTextureServerConnector(IConfigSource config, IHttpServer server, string configName) :
44 base(config, server, configName)
45 {
46 if (configName != String.Empty)
47 m_ConfigName = configName;
48
49 IConfig serverConfig = config.Configs[m_ConfigName];
50 if (serverConfig == null)
51 throw new Exception(String.Format("No section '{0}' in config file", m_ConfigName));
52
53 string assetService = serverConfig.GetString("AssetService", String.Empty);
54
55 if (assetService == String.Empty)
56 throw new Exception("No AssetService in config file");
57
58 Object[] args = new Object[] { config };
59 m_AssetService =
60 ServerUtils.LoadPlugin<IAssetService>(assetService, args);
61
62 if (m_AssetService == null)
63 throw new Exception(String.Format("Failed to load AssetService from {0}; config is {1}", assetService, m_ConfigName));
64
65 server.AddStreamHandler(new GetTextureHandler("/CAPS/" + UUID.Random() + "/", m_AssetService));
66 }
67
68 }
69}