Measure bandwidth for chromoting video channel

remoting/client/plugin/chromoting_scriptable_object.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/client/plugin/chromoting_scriptable_object.h"
 
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "ppapi/cpp/var.h"
 #include "remoting/client/client_config.h"
+#include "remoting/client/chromoting_stats.h"
 #include "remoting/client/plugin/chromoting_instance.h"
 #include "remoting/client/plugin/pepper_xmpp_proxy.h"
 
 using pp::Var;
 
 namespace remoting {
 
 namespace {
 
 const char kConnectionInfoUpdate[] = "connectionInfoUpdate";
 const char kDebugInfo[] = "debugInfo";
 const char kDesktopHeight[] = "desktopHeight";
 const char kDesktopWidth[] = "desktopWidth";
 const char kDesktopSizeUpdate[] = "desktopSizeUpdate";
 const char kLoginChallenge[] = "loginChallenge";
 const char kSendIq[] = "sendIq";
 const char kQualityAttribute[] = "quality";
 const char kStatusAttribute[] = "status";
+const char kVideoBandwidthAttribute[] = "videoBandwidth";
 
 }  // namespace
 
 ChromotingScriptableObject::ChromotingScriptableObject(
     ChromotingInstance* instance)
     : instance_(instance) {
 }
 
 ChromotingScriptableObject::~ChromotingScriptableObject() {
 }
@@ skipping 23 matching lines @@
 
   // Debug info to display.
   AddAttribute(kConnectionInfoUpdate, Var());
   AddAttribute(kDebugInfo, Var());
   AddAttribute(kDesktopSizeUpdate, Var());
   AddAttribute(kLoginChallenge, Var());
   AddAttribute(kSendIq, Var());
   AddAttribute(kDesktopWidth, Var(0));
   AddAttribute(kDesktopHeight, Var(0));
 
+  // Statistics.
+  AddAttribute(kVideoBandwidthAttribute, Var());
+
   AddMethod("connect", &ChromotingScriptableObject::DoConnect);
   AddMethod("connectSandboxed",
             &ChromotingScriptableObject::DoConnectSandboxed);
   AddMethod("disconnect", &ChromotingScriptableObject::DoDisconnect);
   AddMethod("submitLoginInfo", &ChromotingScriptableObject::DoSubmitLogin);
   AddMethod("onIq", &ChromotingScriptableObject::DoOnIq);
 }
 
 bool ChromotingScriptableObject::HasProperty(const Var& name, Var* exception) {
   // TODO(ajwong): Check if all these name.is_string() sentinels are required.
@@ skipping 37 matching lines @@
     return Var();
   }
 
   PropertyNameMap::const_iterator iter = property_names_.find(name.AsString());
 
   // No property found.
   if (iter == property_names_.end()) {
     return ScriptableObject::GetProperty(name, exception);
   }
 
+  // If this is a statistics attribute then return the value from
+  // ChromotingStats structure.
+  if (name.AsString() == kVideoBandwidthAttribute) {
+    return instance_->GetStats()->video_bandwidth()->Rate();
+  }
+
   // TODO(ajwong): This incorrectly return a null object if a function
   // property is requested.
   return properties_[iter->second].attribute;
 }
 
 void ChromotingScriptableObject::GetAllPropertyNames(
     std::vector<Var>* properties,
     Var* exception) {
   for (size_t i = 0; i < properties_.size(); i++) {
     properties->push_back(Var(properties_[i].name));
@@ skipping 262 matching lines @@
     *exception = Var("response_xml must be a string.");
     return Var();
   }
 
   xmpp_proxy_->OnIq(args[0].AsString());
 
   return Var();
 }
 
 }  // namespace remoting