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Merge branch 'master' of melanie@opensimulator.org:/var/git/opensim

viewer-2-initial-appearance
Melanie 2010-12-09 01:55:45 +00:00
parent 4df1d25d23 1070cffcf9
commit d7346dd5ff
2 changed files with 289 additions and 48 deletions
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81
OpenSim/Framework/WebUtil.cs
View File

@ -26,6 +26,7 @@
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
@ -363,5 +364,85 @@ namespace OpenSim.Framework
}
#endregion Stream
public class QBasedComparer : IComparer
{
public int Compare(Object x, Object y)
{
float qx = GetQ(x);
float qy = GetQ(y);
if (qx < qy)
return -1;
if (qx == qy)
return 0;
return 1;
}
private float GetQ(Object o)
{
// Example: image/png;q=0.9
if (o is String)
{
string mime = (string)o;
string[] parts = mime.Split(new char[] { ';' });
if (parts.Length > 1)
{
string[] kvp = parts[1].Split(new char[] { '=' });
if (kvp.Length == 2 && kvp[0] == "q")
{
float qvalue = 1F;
float.TryParse(kvp[1], out qvalue);
return qvalue;
}
}
}
return 1F;
}
}
/// <summary>
/// Takes the value of an Accept header and returns the preferred types
/// ordered by q value (if it exists).
/// Example input: image/jpg;q=0.7, image/png;q=0.8, image/jp2
/// Exmaple output: ["jp2", "png", "jpg"]
/// NOTE: This doesn't handle the semantics of *'s...
/// </summary>
/// <param name="accept"></param>
/// <returns></returns>
public static string[] GetPreferredImageTypes(string accept)
{
if (accept == null || accept == string.Empty)
return new string[0];
string[] types = accept.Split(new char[] { ',' });
if (types.Length > 0)
{
List<string> list = new List<string>(types);
list.RemoveAll(delegate(string s) { return !s.ToLower().StartsWith("image"); });
ArrayList tlist = new ArrayList(list);
tlist.Sort(new QBasedComparer());
string[] result = new string[tlist.Count];
for (int i = 0; i < tlist.Count; i++)
{
string mime = (string)tlist[i];
string[] parts = mime.Split(new char[] { ';' });
string[] pair = parts[0].Split(new char[] { '/' });
if (pair.Length == 2)
result[i] = pair[1].ToLower();
else // oops, we don't know what this is...
result[i] = pair[0];
}
return result;
}
return new string[0];
}
}
}

250
OpenSim/Region/CoreModules/Avatar/Assets/GetTextureModule.cs
View File

@ -28,6 +28,8 @@
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Drawing;
using System.Drawing.Imaging;
using System.Reflection;
using System.IO;
using System.Web;
@ -35,6 +37,7 @@ using log4net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenMetaverse.Imaging;
using OpenSim.Framework;
using OpenSim.Framework.Servers;
using OpenSim.Framework.Servers.HttpServer;
@ -74,6 +77,12 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
private Scene m_scene;
private IAssetService m_assetService;
public const string DefaultFormat = "x-j2c";
// TODO: Change this to a config option
const string REDIRECT_URL = null;
#region IRegionModule Members
public void Initialise(Scene pScene, IConfigSource pSource)
@ -96,7 +105,7 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
{
UUID capID = UUID.Random();
m_log.Info("[GETTEXTURE]: /CAPS/" + capID);
m_log.InfoFormat("[GETTEXTURE]: /CAPS/{0} in region {1}", capID, m_scene.RegionInfo.RegionName);
caps.RegisterHandler("GetTexture", new StreamHandler("GET", "/CAPS/" + capID, ProcessGetTexture));
}
@ -104,12 +113,12 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
private byte[] ProcessGetTexture(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
{
// TODO: Change this to a config option
const string REDIRECT_URL = null;
//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)
{
@ -121,52 +130,27 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
UUID textureID;
if (!String.IsNullOrEmpty(textureStr) && UUID.TryParse(textureStr, out textureID))
{
//m_log.DebugFormat("[GETTEXTURE]: {0}", textureID);
AssetBase texture;
if (!String.IsNullOrEmpty(REDIRECT_URL))
string[] formats;
if (format != null && format != string.Empty)
{
// Only try to fetch locally cached textures. Misses are redirected
texture = m_assetService.GetCached(textureID.ToString());
if (texture != null)
{
if (texture.Type != (sbyte)AssetType.Texture)
{
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
httpResponse.Send();
return null;
}
SendTexture(httpRequest, httpResponse, texture);
formats = new string[1] { format.ToLower() };
}
else
{
string textureUrl = REDIRECT_URL + textureID.ToString();
m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl);
httpResponse.RedirectLocation = textureUrl;
}
}
else
{
// Fetch locally or remotely. Misses return a 404
texture = m_assetService.Get(textureID.ToString());
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
if (texture != null)
{
if (texture.Type != (sbyte)AssetType.Texture)
{
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
httpResponse.Send();
return null;
}
SendTexture(httpRequest, httpResponse, texture);
}
else
foreach (string f in formats)
{
m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
}
if (FetchTexture(httpRequest, httpResponse, textureID, f))
break;
}
}
else
{
@ -177,11 +161,105 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
return null;
}
private void SendTexture(OSHttpRequest request, OSHttpResponse response, AssetBase texture)
/// <summary>
///
/// </summary>
/// <param name="httpRequest"></param>
/// <param name="httpResponse"></param>
/// <param name="textureID"></param>
/// <param name="format"></param>
/// <returns>False for "caller try another codec"; true otherwise</returns>
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.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))
if (!String.IsNullOrEmpty(range)) // JP2's only
{
// Range request
int start, end;
@ -212,15 +290,19 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
}
else
{
m_log.Warn("Malformed Range header: " + range);
m_log.Warn("[GETTEXTURE]: Malformed Range header: " + range);
response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest;
}
}
else
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);
}
}
@ -240,5 +322,83 @@ namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
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 jpeg 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;
}
}
}