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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.Drawing;
using System.IO;
using System.Net;
using libsecondlife;
using Nini.Config;
using OpenJPEGNet;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Scenes;
namespace OpenSim.Region.Environment.Modules.Scripting.LoadImageURL
{
public class LoadImageURLModule : IRegionModule, IDynamicTextureRender
{
private string m_name = "LoadImageURL";
private Scene m_scene;
private IDynamicTextureManager m_textureManager;
#region IDynamicTextureRender Members
public string GetName()
{
return m_name;
}
public string GetContentType()
{
return ("image");
}
public bool SupportsAsynchronous()
{
return true;
}
public byte[] ConvertUrl(string url, string extraParams)
{
return null;
}
public byte[] ConvertStream(Stream data, string extraParams)
{
return null;
}
public bool AsyncConvertUrl(LLUUID id, string url, string extraParams)
{
MakeHttpRequest(url, id);
return true;
}
public bool AsyncConvertData(LLUUID id, string bodyData, string extraParams)
{
return false;
}
#endregion
#region IRegionModule Members
public void Initialise(Scene scene, IConfigSource config)
{
if (m_scene == null)
{
m_scene = scene;
}
}
public void PostInitialise()
{
m_textureManager = m_scene.RequestModuleInterface<IDynamicTextureManager>();
if (m_textureManager != null)
{
m_textureManager.RegisterRender(GetContentType(), this);
}
}
public void Close()
{
}
public string Name
{
get { return m_name; }
}
public bool IsSharedModule
{
get { return true; }
}
#endregion
private void MakeHttpRequest(string url, LLUUID requestID)
{
WebRequest request = HttpWebRequest.Create(url);
RequestState state = new RequestState((HttpWebRequest) request, requestID);
IAsyncResult result = request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);
TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
state.TimeOfRequest = (int) t.TotalSeconds;
}
private void HttpRequestReturn(IAsyncResult result)
{
RequestState state = (RequestState) result.AsyncState;
WebRequest request = (WebRequest) state.Request;
HttpWebResponse response = (HttpWebResponse) request.EndGetResponse(result);
if (response.StatusCode == HttpStatusCode.OK)
{
Bitmap image = new Bitmap(response.GetResponseStream());
Size newsize;
// TODO: make this a bit less hard coded
if ((image.Height < 64) && (image.Width < 64))
{
newsize = new Size(32, 32);
}
else if ((image.Height < 128) && (image.Width < 128))
{
newsize = new Size(64, 64);
}
else if ((image.Height < 256) && (image.Width < 256))
{
newsize = new Size(128, 128);
}
else if ((image.Height < 512 && image.Width < 512))
{
newsize = new Size(256, 256);
}
else if ((image.Height < 1024 && image.Width < 1024))
{
newsize = new Size(512, 512);
}
else
{
newsize = new Size(1024, 1024);
}
Bitmap resize = new Bitmap(image, newsize);
byte[] imageJ2000 = OpenJPEG.EncodeFromImage(resize, true);
m_textureManager.ReturnData(state.RequestID, imageJ2000);
}
}
#region Nested type: RequestState
public class RequestState
{
public HttpWebRequest Request = null;
public LLUUID RequestID = LLUUID.Zero;
public int TimeOfRequest = 0;
public RequestState(HttpWebRequest request, LLUUID requestID)
{
Request = request;
RequestID = requestID;
}
}
#endregion
}
}
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