From 6b2b036387784a74cf88f35715219071ee8718d2 Mon Sep 17 00:00:00 2001
From: Diva Canto
Date: Sun, 1 May 2011 09:08:18 -0700
Subject: Added OpenSim.Capabilities.Handlers. For the moment it has only the
GetTexture handler. The region module in Linden space uses it. WARNING:
nothing of this works yet, it just compiles.
---
.../ClientStack/Linden/Caps/GetTextureModule.cs | 315 +--------------------
1 file changed, 4 insertions(+), 311 deletions(-)
(limited to 'OpenSim/Region')
diff --git a/OpenSim/Region/ClientStack/Linden/Caps/GetTextureModule.cs b/OpenSim/Region/ClientStack/Linden/Caps/GetTextureModule.cs
index 58dbc14..341240d 100644
--- a/OpenSim/Region/ClientStack/Linden/Caps/GetTextureModule.cs
+++ b/OpenSim/Region/ClientStack/Linden/Caps/GetTextureModule.cs
@@ -46,30 +46,10 @@ using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;
+using OpenSim.Capabilities.Handlers;
namespace OpenSim.Region.ClientStack.Linden
{
- #region Stream Handler
-
- public delegate byte[] StreamHandlerCallback(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse);
-
- public class StreamHandler : BaseStreamHandler
- {
- StreamHandlerCallback m_callback;
-
- public StreamHandler(string httpMethod, string path, StreamHandlerCallback callback)
- : base(httpMethod, path)
- {
- m_callback = callback;
- }
-
- public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
- {
- return m_callback(path, request, httpRequest, httpResponse);
- }
- }
-
- #endregion Stream Handler
[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
public class GetTextureModule : IRegionModule
@@ -107,298 +87,11 @@ namespace OpenSim.Region.ClientStack.Linden
{
UUID capID = UUID.Random();
-// m_log.InfoFormat("[GETTEXTURE]: /CAPS/{0} in region {1}", capID, m_scene.RegionInfo.RegionName);
- caps.RegisterHandler("GetTexture", new StreamHandler("GET", "/CAPS/" + capID, ProcessGetTexture));
+ // m_log.InfoFormat("[GETTEXTURE]: /CAPS/{0} in region {1}", capID, m_scene.RegionInfo.RegionName);
+ //caps.RegisterHandler("GetTexture", new StreamHandler("GET", "/CAPS/" + capID, ProcessGetTexture));
+ caps.RegisterHandler("GetTexture", new GetTextureHandler("/CAPS/" + capID + "/", m_assetService));
}
#endregion
-
- private byte[] ProcessGetTexture(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
- {
- //m_log.DebugFormat("[GETTEXTURE]: called in {0}", m_scene.RegionInfo.RegionName);
-
- // Try to parse the texture ID from the request URL
- NameValueCollection query = HttpUtility.ParseQueryString(httpRequest.Url.Query);
- string textureStr = query.GetOne("texture_id");
- string format = query.GetOne("format");
-
- if (m_assetService == null)
- {
- m_log.Error("[GETTEXTURE]: Cannot fetch texture " + textureStr + " without an asset service");
- httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
- return null;
- }
-
- UUID textureID;
- if (!String.IsNullOrEmpty(textureStr) && UUID.TryParse(textureStr, out textureID))
- {
- string[] formats;
- if (format != null && format != string.Empty)
- {
- formats = new string[1] { format.ToLower() };
- }
- else
- {
- formats = WebUtil.GetPreferredImageTypes(httpRequest.Headers.Get("Accept"));
- if (formats.Length == 0)
- formats = new string[1] { DefaultFormat }; // default
-
- }
- // OK, we have an array with preferred formats, possibly with only one entry
-
- httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
- foreach (string f in formats)
- {
- if (FetchTexture(httpRequest, httpResponse, textureID, f))
- break;
- }
-
- }
- else
- {
- m_log.Warn("[GETTEXTURE]: Failed to parse a texture_id from GetTexture request: " + httpRequest.Url);
- }
-
- httpResponse.Send();
- return null;
- }
-
- ///
- ///
- ///
- ///
- ///
- ///
- ///
- /// False for "caller try another codec"; true otherwise
- private bool FetchTexture(OSHttpRequest httpRequest, OSHttpResponse httpResponse, UUID textureID, string format)
- {
-// m_log.DebugFormat("[GETTEXTURE]: {0} with requested format {1}", textureID, format);
- AssetBase texture;
-
- string fullID = textureID.ToString();
- if (format != DefaultFormat)
- fullID = fullID + "-" + format;
-
- if (!String.IsNullOrEmpty(REDIRECT_URL))
- {
- // Only try to fetch locally cached textures. Misses are redirected
- texture = m_assetService.GetCached(fullID);
-
- if (texture != null)
- {
- if (texture.Type != (sbyte)AssetType.Texture)
- {
- httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
- return true;
- }
- WriteTextureData(httpRequest, httpResponse, texture, format);
- }
- else
- {
- string textureUrl = REDIRECT_URL + textureID.ToString();
- m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl);
- httpResponse.RedirectLocation = textureUrl;
- return true;
- }
- }
- else // no redirect
- {
- // try the cache
- texture = m_assetService.GetCached(fullID);
-
- if (texture == null)
- {
- //m_log.DebugFormat("[GETTEXTURE]: texture was not in the cache");
-
- // Fetch locally or remotely. Misses return a 404
- texture = m_assetService.Get(textureID.ToString());
-
- if (texture != null)
- {
- if (texture.Type != (sbyte)AssetType.Texture)
- {
- httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
- return true;
- }
- if (format == DefaultFormat)
- {
- WriteTextureData(httpRequest, httpResponse, texture, format);
- return true;
- }
- else
- {
- AssetBase newTexture = new AssetBase(texture.ID + "-" + format, texture.Name, (sbyte)AssetType.Texture, texture.Metadata.CreatorID);
- newTexture.Data = ConvertTextureData(texture, format);
- if (newTexture.Data.Length == 0)
- return false; // !!! Caller try another codec, please!
-
- newTexture.Flags = AssetFlags.Collectable;
- newTexture.Temporary = true;
- m_assetService.Store(newTexture);
- WriteTextureData(httpRequest, httpResponse, newTexture, format);
- return true;
- }
- }
- }
- else // it was on the cache
- {
- //m_log.DebugFormat("[GETTEXTURE]: texture was in the cache");
- WriteTextureData(httpRequest, httpResponse, texture, format);
- return true;
- }
- }
-
- // not found
-// m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
- httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
- return true;
- }
-
- private void WriteTextureData(OSHttpRequest request, OSHttpResponse response, AssetBase texture, string format)
- {
- string range = request.Headers.GetOne("Range");
- //m_log.DebugFormat("[GETTEXTURE]: Range {0}", range);
- if (!String.IsNullOrEmpty(range)) // JP2's only
- {
- // Range request
- int start, end;
- if (TryParseRange(range, out start, out end))
- {
- // Before clamping start make sure we can satisfy it in order to avoid
- // sending back the last byte instead of an error status
- if (start >= texture.Data.Length)
- {
- response.StatusCode = (int)System.Net.HttpStatusCode.RequestedRangeNotSatisfiable;
- return;
- }
-
- end = Utils.Clamp(end, 0, texture.Data.Length - 1);
- start = Utils.Clamp(start, 0, end);
- int len = end - start + 1;
-
- //m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
-
- if (len < texture.Data.Length)
- response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent;
-
- response.ContentLength = len;
- response.ContentType = texture.Metadata.ContentType;
- response.AddHeader("Content-Range", String.Format("bytes {0}-{1}/{2}", start, end, texture.Data.Length));
-
- response.Body.Write(texture.Data, start, len);
- }
- else
- {
- m_log.Warn("[GETTEXTURE]: Malformed Range header: " + range);
- response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest;
- }
- }
- else // JP2's or other formats
- {
- // Full content request
- response.StatusCode = (int)System.Net.HttpStatusCode.OK;
- response.ContentLength = texture.Data.Length;
- if (format == DefaultFormat)
- response.ContentType = texture.Metadata.ContentType;
- else
- response.ContentType = "image/" + format;
- response.Body.Write(texture.Data, 0, texture.Data.Length);
- }
- }
-
- private bool TryParseRange(string header, out int start, out int end)
- {
- if (header.StartsWith("bytes="))
- {
- string[] rangeValues = header.Substring(6).Split('-');
- if (rangeValues.Length == 2)
- {
- if (Int32.TryParse(rangeValues[0], out start) && Int32.TryParse(rangeValues[1], out end))
- return true;
- }
- }
-
- start = end = 0;
- return false;
- }
-
-
- private byte[] ConvertTextureData(AssetBase texture, string format)
- {
- m_log.DebugFormat("[GETTEXTURE]: Converting texture {0} to {1}", texture.ID, format);
- byte[] data = new byte[0];
-
- MemoryStream imgstream = new MemoryStream();
- Bitmap mTexture = new Bitmap(1, 1);
- ManagedImage managedImage;
- Image image = (Image)mTexture;
-
- try
- {
- // Taking our jpeg2000 data, decoding it, then saving it to a byte array with regular data
-
- imgstream = new MemoryStream();
-
- // Decode image to System.Drawing.Image
- if (OpenJPEG.DecodeToImage(texture.Data, out managedImage, out image))
- {
- // Save to bitmap
- mTexture = new Bitmap(image);
-
- EncoderParameters myEncoderParameters = new EncoderParameters();
- myEncoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 95L);
-
- // Save bitmap to stream
- ImageCodecInfo codec = GetEncoderInfo("image/" + format);
- if (codec != null)
- {
- mTexture.Save(imgstream, codec, myEncoderParameters);
- // Write the stream to a byte array for output
- data = imgstream.ToArray();
- }
- else
- m_log.WarnFormat("[GETTEXTURE]: No such codec {0}", format);
-
- }
- }
- catch (Exception e)
- {
- m_log.WarnFormat("[GETTEXTURE]: Unable to convert texture {0} to {1}: {2}", texture.ID, format, e.Message);
- }
- finally
- {
- // Reclaim memory, these are unmanaged resources
- // If we encountered an exception, one or more of these will be null
- if (mTexture != null)
- mTexture.Dispose();
-
- if (image != null)
- image.Dispose();
-
- if (imgstream != null)
- {
- imgstream.Close();
- imgstream.Dispose();
- }
- }
-
- return data;
- }
-
- // From msdn
- private static ImageCodecInfo GetEncoderInfo(String mimeType)
- {
- ImageCodecInfo[] encoders;
- encoders = ImageCodecInfo.GetImageEncoders();
- for (int j = 0; j < encoders.Length; ++j)
- {
- if (encoders[j].MimeType == mimeType)
- return encoders[j];
- }
- return null;
- }
-
-
}
}
--
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