1 | package com.theboboon.diy.streetview.remote.control;
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2 |
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3 | import java.io.BufferedReader;
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4 | import java.io.BufferedWriter;
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5 | import java.io.IOException;
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6 | import java.io.InputStreamReader;
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7 | import java.io.OutputStreamWriter;
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8 | import java.lang.ref.WeakReference;
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9 | import java.net.Socket;
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10 | import java.net.UnknownHostException;
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11 |
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12 | import org.json.JSONException;
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13 | import org.json.JSONObject;
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14 |
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15 | import android.os.Bundle;
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16 | import android.os.Handler;
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17 | import android.os.Looper;
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18 | import android.os.Message;
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19 | import android.util.Base64;
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20 | import android.util.Log;
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21 |
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22 | public class networking extends Thread {
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23 | Handler me;
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24 | Handler main_coms;
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25 | Socket server;
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26 | BufferedReader downstream;
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27 | BufferedWriter upstream;
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28 | int count_cameras = 0;
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29 |
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30 | public networking (Handler _main_coms)
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31 | {
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32 | main_coms = _main_coms;
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33 | }
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34 |
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35 | @Override
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36 | public void run() {
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37 | try {
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38 | Looper.prepare();
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39 | me = new NetworkingHandler(this);
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40 | Looper.loop();
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41 | } catch (Throwable t) {
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42 | Log.e(getName(), "halted due to an error", t);
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43 | }
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44 | }
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45 |
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46 | public void processmessage(Message msg) {
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47 | Bundle humble = msg.getData();
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48 | if (humble != null && humble.containsKey("command"))
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49 | {
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50 | String command = humble.getString("command");
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51 | if (command.equals("connect"))
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52 | {
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53 | connect(humble.getString("address"), humble.getInt("port"));
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54 | }
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55 | if (command.equals("disconnect"))
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56 | {
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57 | disconnect();
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58 | }
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59 | if (command.equals("detectcameras"))
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60 | {
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61 | detectcameras();
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62 | }
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63 | if (command.equals("capture"))
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64 | {
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65 | capture();
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66 | }
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67 | if (command.equals("shutdown"))
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68 | {
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69 | shutdown();
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70 | }
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71 | if (command.equals("montage"))
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72 | {
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73 | montage(humble.getString("id"));
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74 | }
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75 | }
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76 | }
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77 |
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78 | public Handler gethandler()
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79 | {
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80 | while (me == null)
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81 | {
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82 |
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83 | }
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84 | return me;
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85 | }
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86 |
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87 | public void sethandler(Handler _main)
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88 | {
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89 | main_coms = _main;
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90 | }
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91 |
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92 | private void connect(String address, int port)
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93 | {
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94 | try {
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95 | server = new Socket(address,port);
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96 | if (server.isConnected() && !server.isInputShutdown())
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97 | {
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98 | server.setSoTimeout(15000);
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99 | downstream = new BufferedReader(new InputStreamReader(server.getInputStream()));
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100 | upstream = new BufferedWriter(new OutputStreamWriter(server.getOutputStream()));
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101 | String comms_check = sendToServer("COMMS CHECK");
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102 | if (comms_check.equals("HELO"))
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103 | {
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104 | Bundle mail = new Bundle();
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105 | mail.putString("response","connection_status");
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106 | mail.putBoolean("status", server.isConnected());
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107 | sendToMain(mail);
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108 | }
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109 | else
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110 | {
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111 | if (!(comms_check.trim().length() == 0))
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112 | {
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113 | error("Server didn't respond to the Connection request.");
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114 | }
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115 | else if (comms_check.length() > 0)
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116 | {
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117 | error("Server didn't respond correctly. Please check that the correct port was used.");
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118 | }
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119 | disconnect();
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120 | }
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121 | }
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122 | else
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123 | {
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124 | error("Server is already in use by another client.");
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125 | disconnect();
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126 | }
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127 | } catch (UnknownHostException e) {
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128 | error(e.getMessage());
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129 | Bundle mail = new Bundle();
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130 | mail.putString("response","connection_status");
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131 | mail.putBoolean("status", false);
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132 | sendToMain(mail);
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133 | } catch (IOException e) {
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134 | error(e.getMessage());
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135 | Bundle mail = new Bundle();
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136 | mail.putString("response","connection_status");
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137 | mail.putBoolean("status", false);
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138 | sendToMain(mail);
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139 | }
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140 | }
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141 |
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142 | private void disconnect()
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143 | {
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144 | try {
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145 | if (server != null && server.isConnected() && !server.isClosed())
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146 | {
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147 | server.close();
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148 | }
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149 | } catch (IOException e) {
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150 | error(e.getMessage());
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151 | }
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152 | Bundle mail = new Bundle();
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153 | mail.putString("response","connection_status");
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154 | mail.putBoolean("status", false);
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155 | sendToMain(mail);
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156 | }
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157 |
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158 | private void detectcameras()
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159 | {
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160 | if (server.isClosed())
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161 | {
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162 | error("Not connected to a Server. Aborting camera detection.");
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163 | return;
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164 | }
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165 | try {
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166 | String response = sendToServer("Detect Cameras");
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167 | if (response.length() != 0)
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168 | {
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169 | JSONObject data = new JSONObject(response);
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170 | int cameras = data.getInt("count");
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171 | Bundle mail = new Bundle();
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172 | mail.putString("response","detected cameras");
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173 | mail.putInt("count", cameras);
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174 | sendToMain(mail);
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175 | count_cameras = cameras;
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176 | }
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177 | } catch (JSONException e) {
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178 | error(e.getMessage());
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179 | } catch (NullPointerException e) {
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180 | error(e.getMessage());
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181 | disconnect();
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182 | }
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183 | }
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184 | private void capture()
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185 | {
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186 | if (server.isClosed())
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187 | {
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188 | error("Not connected to a Server. Aborting Capture.");
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189 | return;
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190 | }
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191 | notify("Attempting to capture " + count_cameras + " images... This may take some time...");
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192 | try {
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193 | upstream.write("Capture\n");
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194 | upstream.flush();
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195 | } catch (IOException e) {
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196 | error("Comunication error: " + e.getMessage());
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197 | disconnect();
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198 | }
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199 |
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200 | try {
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201 | int count = 0;
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202 | while (count < (count_cameras + 1))
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203 | {
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204 | String response = "";
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205 | response = downstream.readLine();
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206 | JSONObject data = new JSONObject(response);
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207 | if (data.has("success"))
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208 | {
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209 | boolean success = data.getBoolean("success");
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210 | Bundle mail = new Bundle();
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211 | mail.putString("response","capture");
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212 | mail.putBoolean("success", success);
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213 | if (success)
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214 | {
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215 | mail.putString("set",data.getString("set"));
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216 | }
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217 | sendToMain(mail);
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218 | }
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219 | else if (data.has("captured"))
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220 | {
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221 | Bundle mail = new Bundle();
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222 | mail.putString("pending","captured");
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223 | mail.putString("camera", "" + data.getInt("captured"));
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224 | sendToMain(mail);
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225 | }
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226 | else if (data.has("count"))
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227 | {
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228 | count_cameras = data.getInt("count");
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229 | count = count_cameras + 2;
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230 | Bundle mail = new Bundle();
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231 | mail.putString("response","capture");
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232 | mail.putBoolean("success", false);
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233 | mail.putBoolean("known", true);
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234 | error("Camera Capture Aborted: Number of cameras connected has changed.");
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235 | sendToMain(mail);
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236 | mail = new Bundle();
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237 | mail.putString("response","detected cameras");
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238 | mail.putInt("count", data.getInt("count"));
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239 | sendToMain(mail);
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240 | }
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241 | else
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242 | {
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243 | error("Camera Capture Aborted: An Unspecified error has occoured.");
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244 | count = count_cameras + 2;
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245 | Bundle mail = new Bundle();
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246 | mail.putString("response","capture");
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247 | mail.putBoolean("success", false);
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248 | sendToMain(mail);
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249 | }
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250 | count++;
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251 | }
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252 | } catch (IOException e) {
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253 | error("Connection to Server Timed out.");
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254 | disconnect();
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255 | } catch (JSONException e) {
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256 | error(e.getMessage());
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257 | } catch (NullPointerException e) {
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258 | error("Unexpected loss of connection to server.");
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259 | disconnect();
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260 | }
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261 | }
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262 |
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263 | private void montage(String id)
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264 | {
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265 | if (server.isClosed())
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266 | {
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267 | error("Not connected to a Server. Aborting retreval of Montage.");
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268 | return;
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269 | }
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270 |
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271 | try {
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272 | String response = sendToServer("Montage:" + id);
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273 | if (response.length() != 0)
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274 | {
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275 | JSONObject data = new JSONObject(response);
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276 | byte[] image = Base64.decode(data.getString("image_data"), Base64.DEFAULT);
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277 | Bundle mail = new Bundle();
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278 | mail.putString("response", "montage");
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279 | mail.putByteArray("image", image);
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280 | sendToMain(mail);
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281 | }
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282 | } catch (JSONException e) {
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283 | error(e.getMessage());
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284 | } catch (NullPointerException e) {
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285 | error("Unexpected loss of connection to server.");
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286 | disconnect();
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287 | }
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288 | }
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289 |
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290 | private void shutdown()
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291 | {
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292 | if (server.isClosed())
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293 | {
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294 | error("Not connected to a Server. Aborting Server Shutdown.");
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295 | return;
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296 | }
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297 | sendToServerNR("exit");
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298 | warning("Server shutting down... Automaticly disconnecting from server.");
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299 | disconnect();
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300 | }
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301 |
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302 | private void error(String message)
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303 | {
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304 | Bundle mail = new Bundle();
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305 | mail.putString("response","error");
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306 | mail.putString("message", message);
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307 | sendToMain(mail);
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308 | }
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309 |
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310 | private void warning(String message)
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311 | {
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312 | Bundle mail = new Bundle();
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313 | mail.putString("response","warning");
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314 | mail.putString("message", message);
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315 | sendToMain(mail);
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316 | }
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317 |
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318 | private void notify(String message)
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319 | {
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320 | Bundle mail = new Bundle();
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321 | mail.putString("response","notify");
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322 | mail.putString("message", message);
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323 | sendToMain(mail);
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324 | }
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325 |
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326 | private void sendToMain(Bundle message)
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327 | {
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328 | Message msg = main_coms.obtainMessage();
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329 | msg.setData(message);
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330 | msg.sendToTarget();
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331 | }
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332 |
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333 | private String sendToServer(String command)
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334 | {
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335 | String response = "";
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336 | try {
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337 | upstream.write(command + "\n");
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338 | upstream.flush();
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339 | } catch (IOException e) {
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340 | error("Comunication error: " + e.getMessage());
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341 | disconnect();
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342 | }
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343 | try {
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344 | response = downstream.readLine();
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345 | } catch (IOException e) {
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346 | error("Connection to Server Timed out.");
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347 | disconnect();
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348 | }
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349 | return response;
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350 | }
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351 |
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352 | private void sendToServerNR(String command)
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353 | {
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354 | try {
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355 | upstream.write(command + "\n");
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356 | upstream.flush();
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357 | } catch (IOException e) {
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358 | error("Comunication error: " + e.getMessage());
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359 | disconnect();
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360 | }
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361 | }
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362 |
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363 | private static class NetworkingHandler extends Handler
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364 | {
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365 | private final WeakReference<networking> mActivity;
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366 |
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367 | public NetworkingHandler(networking activity) {
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368 | mActivity = new WeakReference<networking>(activity);
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369 | }
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370 |
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371 | public void handleMessage(Message msg)
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372 | {
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373 | super.handleMessage(msg);
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374 | mActivity.get().processmessage(msg);
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375 | }
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376 | }
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377 | }
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