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1/*
2Copyright (c) 2007 Michael Wright
3
4* Copyright (c) <year>, <copyright holder>
5* All rights reserved.
6*
7* Redistribution and use in source and binary forms, with or without
8* modification, are permitted provided that the following conditions are met:
9* * Redistributions of source code must retain the above copyright
10* notice, this list of conditions and the following disclaimer.
11* * Redistributions in binary form must reproduce the above copyright
12* notice, this list of conditions and the following disclaimer in the
13* documentation and/or other materials provided with the distribution.
14* * Neither the name of the <organization> nor the
15* names of its contributors may be used to endorse or promote products
16* derived from this software without specific prior written permission.
17*
18* THIS SOFTWARE IS PROVIDED BY <copyright holder> ``AS IS'' AND ANY
19* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21* DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
22* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*/
29
30using System;
31using System.Collections.Generic;
32using libsecondlife;
33using System.Collections;
34using libsecondlife.Packets;
35using libsecondlife.AssetSystem;
36using System.IO;
37
38
39namespace Second_server
40{
41 /// <summary>
42 /// Description of Texture_manager.
43 /// </summary>
44 public class Texture_manager
45 {
46 public Dictionary<libsecondlife.LLUUID,Texture_image> textures;
47 public ArrayList requests=new ArrayList(); //should change to a generic
48 public ArrayList uploads=new ArrayList();
49 private Server server;
50
51 public Texture_manager(Server serve)
52 {
53 server=serve;
54 textures=new Dictionary<libsecondlife.LLUUID,Texture_image> ();
55 this.initialise();
56 }
57
58 public void add_request(User_Agent_info user, LLUUID image_id)
59 {
60
61 if(!this.textures.ContainsKey(image_id))
62 {
63 //not found image so send back image not in data base message
64 ImageNotInDatabasePacket im_not=new ImageNotInDatabasePacket();
65 im_not.ImageID.ID=image_id;
66 server.SendPacket(im_not,true,user);
67 return;
68 }
69 Texture_image imag=this.textures[image_id];
70 Texture_request req=new Texture_request();
71 req.req_user=user;
72 req.req_image=image_id;
73 req.image_info=imag;
74
75 if(imag.data.LongLength>1000) //should be bigger or smaller?
76 {
77 //over 1000 bytes so split up file
78 req.num_packets=(int)imag.data.LongLength/1000;
79 req.num_packets++;
80 }
81 else
82 {
83 req.num_packets=1;
84 }
85
86 this.requests.Add(req);
87
88 }
89
90 public void add_texture(LLUUID image_id, string name, byte[] data)
91 {
92
93 }
94 public void Do_work(ulong time)
95 {
96 if(this.requests.Count==0)
97 {
98 //no requests waiting
99 return;
100 }
101 int num;
102 //should be running in its own thread but for now is called by timer
103 if(this.requests.Count<5)
104 {
105 //lower than 5 so do all of them
106 num=this.requests.Count;
107 }
108 else
109 {
110 num=5;
111 }
112 Texture_request req;
113 for(int i=0; i<num; i++)
114 {
115 req=(Texture_request)this.requests[i];
116
117 if(req.packet_counter==0)
118 {
119 //first time for this request so send imagedata packet
120 if(req.num_packets==1)
121 {
122 //only one packet so send whole file
123 ImageDataPacket im=new ImageDataPacket();
124 im.ImageID.Packets=1;
125 im.ImageID.ID=req.image_info.Full_ID;
126 im.ImageID.Size=(uint)req.image_info.data.Length;
127 im.ImageData.Data=req.image_info.data;
128 im.ImageID.Codec=2;
129 server.SendPacket(im,true,req.req_user);
130 req.packet_counter++;
131 req.image_info.last_used=time;
132 }
133 else
134 {
135 //more than one packet so split file up
136 }
137 }
138 else
139 {
140 //send imagepacket
141
142 }
143 }
144
145 //remove requests that have been completed
146 for(int i=0; i<num; i++)
147 {
148 req=(Texture_request)this.requests[i];
149 if(req.packet_counter==req.num_packets)
150 {
151 this.requests.Remove(req);
152 }
153 }
154 }
155
156 public void recieve_texture(Packet pack)
157 {
158
159 }
160
161 private void initialise()
162 {
163 //for now read in our test image
164 Texture_image im=new Texture_image();
165 im.filename="testpic2.jp2";
166 im.Full_ID=new LLUUID("00000000-0000-0000-5005-000000000005");
167 this.load_image(im);
168 this.textures.Add(im.Full_ID,im);
169 }
170 private void load_image(Texture_image im)
171 {
172 string data_path=System.Windows.Forms.Application.StartupPath + @"\textures\";
173 string filename=data_path+@im.filename;
174 FileInfo fInfo = new FileInfo(filename);
175
176 long numBytes = fInfo.Length;
177
178 FileStream fStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
179 byte[] idata=new byte[numBytes];
180 BinaryReader br = new BinaryReader(fStream);
181 idata= br.ReadBytes((int)numBytes);
182 br.Close();
183 fStream.Close();
184 im.data=idata;
185 im.loaded=true;
186 }
187
188 }
189
190 public class Texture_request
191 {
192 public User_Agent_info req_user;
193 public LLUUID req_image;
194 public Texture_image image_info;
195 public long data_pointer=0;
196 public int num_packets=0;
197 public int packet_counter=0;
198
199 public Texture_request()
200 {
201
202 }
203 }
204 public class Texture_image
205 {
206 public byte[] data;
207 public LLUUID Full_ID;
208 public string name;
209 public string filename;
210 public bool loaded;
211 public ulong last_used; //need to add a tick/time counter and keep record
212 // of how often images are requested to unload unused ones.
213
214 public Texture_image()
215 {
216
217 }
218 }
219}
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