add realtime mode

Joint work between Mark L, Justin, and Steve Gribble.

src/SimpleNetworkController.cpp

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2009 Steve Gribble (gribble [at] cs.washington.edu) and
+ *                    Mark Liversedge (liversedge@gmail.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdio.h>
+
+#include "SimpleNetworkController.h"
+#include "RealtimeData.h"
+
+SimpleNetworkController::SimpleNetworkController(RealtimeWindow *parent,
+                                                 DeviceConfiguration *dc)
+  : RealtimeController(parent), parent(parent), client(parent, dc), state(DISCONNECTED)
+{
+}
+
+int SimpleNetworkController::start() {
+  if (state != DISCONNECTED) {
+    // can't connect if I'm already connected, return failure
+    return -1;
+  }
+
+  if (client.start()) {
+    state = RUNNING;
+    return 0;
+  } else {
+qDebug()<<"Client didn't start!";
+  }
+  return -1;
+}
+
+int SimpleNetworkController::stop() {
+  if (state == DISCONNECTED) {
+    // can't disconnected if I'm disconnected, return failure
+    return -1;
+  }
+  client.closeAndExit();
+  state = DISCONNECTED;
+  return 0;
+}
+
+int SimpleNetworkController::pause() {
+  if (state != RUNNING) {
+    // can't pause if I'm not running
+    return -1;
+  }
+  state = PAUSED;
+  return 0;
+}
+
+int SimpleNetworkController::restart() {
+  if (state != PAUSED) {
+    // can't resume if I'm not paused
+    return -1;
+  }
+  state = RUNNING;
+  return 0;
+}
+
+void SimpleNetworkController::getRealtimeData(RealtimeData &rtData) {
+  if (state == RUNNING) {
+
+    // did the thread die?
+    if(!client.isRunning())
+    {
+        QMessageBox msgBox;
+        msgBox.setText("Cannot Connect to peer");
+        msgBox.setIcon(QMessageBox::Critical);
+        msgBox.exec();
+        parent->Stop();
+    }
+
+    if (!client.getRealtimeData(data_cache)) {
+      // client has disconnected since the last poll
+      printf("getRealtimeData invoked, and client failed\n");
+      this->stop();
+    }
+  }
+  rtData = data_cache;
+}
+
+void SimpleNetworkController::pushRealtimeData(RealtimeData &rtData) {
+  if (state == RUNNING) {
+    if (!client.pushRealtimeData(rtData)) {
+      // client has disconnected since the last push
+      printf("pushRealtimeData invoked, and client failed\n");
+      this->stop();
+      return;
+    }
+  } else {
+    qDebug()<<"Pushed but not running!";
+  }
+}