Added CrOS startup sound.

chrome/browser/chromeos/login/login_display_host_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/login/app_launch_controller.h"
 #include "chrome/browser/chromeos/login/auth_prewarmer.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/login_display.h"
 #include "chrome/browser/chromeos/login/login_display_host.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/gfx/rect.h"
 
 class PrefService;
 
 namespace policy {
 class AutoEnrollmentClient;
 }  // namespace policy
 
 namespace chromeos {
 
 class FocusRingController;
 class KeyboardDrivenOobeKeyHandler;
 class OobeUI;
 class WebUILoginDisplay;
 class WebUILoginView;
 
 // An implementation class for OOBE/login WebUI screen host.
 // It encapsulates controllers, background integration and flow.
 class LoginDisplayHostImpl : public LoginDisplayHost,
                              public content::NotificationObserver,
                              public content::WebContentsObserver,
-                             public chromeos::SessionManagerClient::Observer {
+                             public chromeos::SessionManagerClient::Observer,
+                             public chromeos::CrasAudioHandler::AudioObserver {
  public:
   explicit LoginDisplayHostImpl(const gfx::Rect& background_bounds);
   virtual ~LoginDisplayHostImpl();
 
   // Returns the default LoginDispalyHost instance if it has been created.
   static LoginDisplayHost* default_host() {
     return default_host_;
   }
 
   // LoginDisplayHost implementation:
@@ skipping 44 matching lines @@
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Overridden from content::WebContentsObserver:
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
 
   // Overridden from chromeos::SessionManagerClient::Observer:
   virtual void EmitLoginPromptVisibleCalled() OVERRIDE;
 
+  // Overridden from chromeos::CrasAudioHandler::AudioObserver:
+  virtual void OnActiveOutputNodeChanged() OVERRIDE;
+
  private:
   // Way to restore if renderer have crashed.
   enum RestorePath {
     RESTORE_UNKNOWN,
     RESTORE_WIZARD,
     RESTORE_SIGN_IN,
     RESTORE_ADD_USER_INTO_SESSION,
   };
 
   // Type of animations to run after the login screen.
@@ skipping 44 matching lines @@
   void OnAuthPrewarmDone();
 
   // Toggles OOBE progress bar visibility, the bar is hidden by default.
   void SetOobeProgressBarVisible(bool visible);
 
   // Notifies the interested parties of the auto enrollment check result.
   void NotifyAutoEnrollmentCheckResult(bool should_auto_enroll);
 
   // Tries to play startup sound. If sound can't be played right now,
   // for instance, because cras server is not initialized, playback
-  // will be delayed. When |honor_spoken_feedback| is true, sound will
-  // be reproduced iff spoken feedback is enabled.
-  void TryToPlayStartupSound(bool honor_spoken_feedback);
+  // will be delayed.
+  void TryToPlayStartupSound();
 
   // Called when login-prompt-visible signal is caught.
   void OnLoginPromptVisible();
 
   // Asks ChromeOSSoundsManager to play startup sound.  If
   // |startup_sound_at_signin_| is true, sound will be played iff
   // spoken feedback is enabled.
   void PlayStartupSound();
 
   // Used to calculate position of the screens and background.
@@ skipping 98 matching lines @@
       get_auto_enrollment_result_callbacks_;
 
   FinalizeAnimationType finalize_animation_type_;
 
   base::WeakPtrFactory<LoginDisplayHostImpl> animation_weak_ptr_factory_;
 
   // Time when login prompt visible signal is received. Used for
   // calculations of delay before startup sound.
   base::TimeTicks login_prompt_visible_time_;
 
-  // True when startup sound is requested.
-  bool startup_sound_requested_;
-
   // True when request to play startup sound was sent to
   // SoundsManager.
   bool startup_sound_played_;
 
   // When true, startup sound should be played only when spoken
   // feedback is enabled.  Otherwise, startup sound should be played
   // in any case.
   bool startup_sound_honors_spoken_feedback_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplayHostImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_IMPL_H_