git.rm.cloudns.org Git - xonotic/xonotic.git/blob

   1 package com.nexuiz.demorecorder.application.democutter;\r
   2 import java.io.DataInputStream;\r
   3 import java.io.EOFException;\r
   4 import java.io.IOException;\r
   5 import java.nio.ByteBuffer;\r
   6 \r
   7 \r
   8 public class DemoPacket {\r
   9         \r
  10         private static final int DEMOMSG_CLIENT_TO_SERVER = 0x80000000;\r
  11         \r
  12         private DataInputStream inStream = null;\r
  13         private boolean isEndOfFile = false;\r
  14         private byte[] buffer = new byte[4]; //contains packet length\r
  15         private byte[] angles = new byte[12];\r
  16         private byte[] data;\r
  17         private int packetLength;\r
  18         private boolean isClientToServer = false;\r
  19         private float svcTime = -1;\r
  20 \r
  21         public DemoPacket(DataInputStream inStream) {\r
  22                 this.inStream = inStream;\r
  23                 \r
  24                 try {\r
  25                         inStream.readFully(buffer);\r
  26                 } catch (EOFException e) {\r
  27                         this.isEndOfFile = true;\r
  28                         return;\r
  29                 } catch (IOException e) {\r
  30                         throw new DemoCutterException("Unexpected I/O Exception occurred when processing demo");\r
  31                 }\r
  32                 \r
  33                 packetLength = DemoCutterUtils.convertLittleEndian(buffer);\r
  34                 if ((packetLength & DEMOMSG_CLIENT_TO_SERVER) != 0) {\r
  35                         packetLength = packetLength & ~DEMOMSG_CLIENT_TO_SERVER;\r
  36 \r
  37                         this.isClientToServer = true;\r
  38                         this.readAnglesAndData();\r
  39                         return;\r
  40                 }\r
  41                 \r
  42                 this.readAnglesAndData();\r
  43                 \r
  44                 // extract svc_time\r
  45                 this.readSvcTime();\r
  46                 \r
  47         }\r
  48         \r
  49         public boolean isEndOfFile() {\r
  50                 return this.isEndOfFile;\r
  51         }\r
  52         \r
  53         public boolean isClientToServerPacket() {\r
  54                 return this.isClientToServer;\r
  55         }\r
  56         \r
  57         public byte[] getOriginalLengthAsByte() {\r
  58                 return this.buffer;\r
  59         }\r
  60         \r
  61         public byte[] getAngles() {\r
  62                 return this.angles;\r
  63         }\r
  64         \r
  65         public byte[] getOriginalData() {\r
  66                 return this.data;\r
  67         }\r
  68         \r
  69         public float getSvcTime() {\r
  70                 return this.svcTime;\r
  71         }\r
  72         \r
  73         private void readAnglesAndData() {\r
  74                 // read angles\r
  75                 try {\r
  76                         inStream.readFully(angles);\r
  77                 } catch (EOFException e) {\r
  78                         throw new DemoCutterException("Invalid Demo Packet");\r
  79                 } catch (IOException e) {\r
  80                         throw new DemoCutterException("Unexpected I/O Exception occurred when processing demo");\r
  81                 }\r
  82 \r
  83                 // read data\r
  84                 data = new byte[packetLength];\r
  85                 try {\r
  86                         inStream.readFully(data);\r
  87                 } catch (EOFException e) {\r
  88                         throw new DemoCutterException("Invalid Demo Packet");\r
  89                 } catch (IOException e) {\r
  90                         throw new DemoCutterException("Unexpected I/O Exception occurred when processing demo");\r
  91                 }\r
  92         }\r
  93         \r
  94         private void readSvcTime() {\r
  95                 if (data[0] == 0x07) {\r
  96                         ByteBuffer bb = ByteBuffer.allocate(4);\r
  97                         bb.put(data, 1, 4);\r
  98                         byte[] array = bb.array();\r
  99                         this.svcTime = DemoCutterUtils.byteArrayToFloat(array);\r
 100                 }\r
 101         }\r
 102 }\r