Hotword Private API: Adds speech training functions.

chrome/browser/search/hotword_service.cc

 // Copyright 2013 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 "chrome/browser/search/hotword_service.h"
 
 #include "base/command_line.h"
 #include "base/i18n/case_conversion.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 145 matching lines @@
 }
 
 }  // namespace
 
 namespace hotword_internal {
 // Constants for the hotword field trial.
 const char kHotwordFieldTrialName[] = "VoiceTrigger";
 const char kHotwordFieldTrialDisabledGroupName[] = "Disabled";
 // Old preference constant.
 const char kHotwordUnusablePrefName[] = "hotword.search_enabled";
+// String passed to indicate the training state has changed.
+const char kHotwordTrainingEnabled[] = "hotword_training_enabled";
 }  // namespace hotword_internal
 
 // static
 bool HotwordService::DoesHotwordSupportLanguage(Profile* profile) {
   std::string normalized_locale =
       l10n_util::NormalizeLocale(GetCurrentLocale(profile));
   base::StringToLowerASCII(&normalized_locale);
 
   for (size_t i = 0; i < arraysize(kSupportedLocales); i++) {
     if (normalized_locale.compare(0, 2, kSupportedLocales[i]) == 0)
       return true;
   }
   return false;
 }
 
 // static
 bool HotwordService::IsExperimentalHotwordingEnabled() {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kEnableExperimentalHotwording);
 }
 
 HotwordService::HotwordService(Profile* profile)
     : profile_(profile),
       extension_registry_observer_(this),
       client_(NULL),
       error_message_(0),
       reinstall_pending_(false),
+      training_(false),
       weak_factory_(this) {
   extension_registry_observer_.Add(extensions::ExtensionRegistry::Get(profile));
   // This will be called during profile initialization which is a good time
   // to check the user's hotword state.
   HotwordEnabled enabled_state = UNSET;
   if (IsExperimentalHotwordingEnabled()) {
     // Disable the old extension so it doesn't interfere with the new stuff.
     DisableHotwordExtension(GetExtensionService(profile_));
   } else {
     if (profile_->GetPrefs()->HasPrefPath(prefs::kHotwordSearchEnabled)) {
@@ skipping 267 matching lines @@
 
   OpenApplication(AppLaunchParams(
       profile_, extension, extensions::LAUNCH_CONTAINER_WINDOW, NEW_WINDOW));
 }
 
 HotwordService::LaunchMode
 HotwordService::GetHotwordAudioVerificationLaunchMode() {
   return hotword_audio_verification_launch_mode_;
 }
 
+void HotwordService::StartTraining() {
+  training_ = true;
+
+  if (!IsServiceAvailable())
+    return;
+
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnEnabledChanged(hotword_internal::kHotwordTrainingEnabled);
+}
+
+void HotwordService::FinalizeSpeakerModel() {
+  if (!IsServiceAvailable())
+    return;
+
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnFinalizeSpeakerModel();
+}
+
+void HotwordService::StopTraining() {
+  training_ = false;
+
+  if (!IsServiceAvailable())
+    return;
+
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnEnabledChanged(hotword_internal::kHotwordTrainingEnabled);
+}
+
+void HotwordService::NotifyHotwordTriggered() {
+  if (!IsServiceAvailable())
+    return;
+
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnHotwordTriggered();
+}
+
+bool HotwordService::IsTraining() {
+  return training_;
+}
+
 void HotwordService::OnHotwordSearchEnabledChanged(
     const std::string& pref_name) {
   DCHECK_EQ(pref_name, std::string(prefs::kHotwordSearchEnabled));
 
   ExtensionService* extension_service = GetExtensionService(profile_);
   if (profile_->GetPrefs()->GetBoolean(prefs::kHotwordSearchEnabled))
     EnableHotwordExtension(extension_service);
   else
     DisableHotwordExtension(extension_service);
 }
@@ skipping 38 matching lines @@
     return false;
 
   std::string previous_locale =
       profile_->GetPrefs()->GetString(prefs::kHotwordPreviousLanguage);
   std::string locale = GetCurrentLocale(profile_);
 
   // If it's a new locale, then the old extension should be uninstalled.
   return locale != previous_locale &&
       HotwordService::DoesHotwordSupportLanguage(profile_);
 }