content/browser: Move speech code into content namespace.

content/browser/speech/speech_recognition_manager_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 CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_
 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/renderer_host/media/media_stream_requester.h"
 #include "content/public/browser/speech_recognition_event_listener.h"
 #include "content/public/browser/speech_recognition_manager.h"
 #include "content/public/browser/speech_recognition_session_config.h"
 #include "content/public/browser/speech_recognition_session_context.h"
 #include "content/public/common/speech_recognition_error.h"
 
-namespace content {
-class BrowserMainLoop;
-class SpeechRecognitionManagerDelegate;
-}
-
 namespace media_stream {
 class MediaStreamManager;
 }
 
-namespace speech {
+namespace content {
 
+class BrowserMainLoop;
+class SpeechRecognitionManagerDelegate;
 class SpeechRecognizer;
 
 // This is the manager for speech recognition. It is a single instance in
 // the browser process and can serve several requests. Each recognition request
 // corresponds to a session, initiated via |CreateSession|.
 //
 // In any moment, the manager has a single session known as the primary session,
 // |primary_session_id_|.
 // This is the session that is capturing audio, waiting for user permission,
 // etc. There may also be other, non-primary, sessions living in parallel that
 // are waiting for results but not recording audio.
 //
 // The SpeechRecognitionManager has the following responsibilities:
 //  - Handles requests received from various render views and makes sure only
 //    one of them accesses the audio device at any given time.
 //  - Handles the instantiation of SpeechRecognitionEngine objects when
 //    requested by SpeechRecognitionSessions.
 //  - Relays recognition results/status/error events of each session to the
 //    corresponding listener (demuxing on the base of their session_id).
 //  - Relays also recognition results/status/error events of every session to
 //    the catch-all snoop listener (optionally) provided by the delegate.
 class CONTENT_EXPORT SpeechRecognitionManagerImpl :
-    public NON_EXPORTED_BASE(content::SpeechRecognitionManager),
-    public content::SpeechRecognitionEventListener {
+    public NON_EXPORTED_BASE(SpeechRecognitionManager),
+    public SpeechRecognitionEventListener {
  public:
   // Returns the current SpeechRecognitionManagerImpl or NULL if the call is
   // issued when it is not created yet or destroyed (by BrowserMainLoop).
   static SpeechRecognitionManagerImpl* GetInstance();
 
   // SpeechRecognitionManager implementation.
   virtual int CreateSession(
-      const content::SpeechRecognitionSessionConfig& config) OVERRIDE;
+      const SpeechRecognitionSessionConfig& config) OVERRIDE;
   virtual void StartSession(int session_id) OVERRIDE;
   virtual void AbortSession(int session_id) OVERRIDE;
   virtual void AbortAllSessionsForListener(
-        content::SpeechRecognitionEventListener* listener) OVERRIDE;
+        SpeechRecognitionEventListener* listener) OVERRIDE;
   virtual void AbortAllSessionsForRenderView(int render_process_id,
                                              int render_view_id) OVERRIDE;
   virtual void StopAudioCaptureForSession(int session_id) OVERRIDE;
-  virtual const content::SpeechRecognitionSessionConfig& GetSessionConfig(
+  virtual const SpeechRecognitionSessionConfig& GetSessionConfig(
       int session_id) const OVERRIDE;
-  virtual content::SpeechRecognitionSessionContext GetSessionContext(
+  virtual SpeechRecognitionSessionContext GetSessionContext(
       int session_id) const OVERRIDE;
   virtual int GetSession(int render_process_id,
                          int render_view_id,
                          int request_id) const OVERRIDE;
   virtual bool HasAudioInputDevices() OVERRIDE;
   virtual bool IsCapturingAudio() OVERRIDE;
   virtual string16 GetAudioInputDeviceModel() OVERRIDE;
   virtual void ShowAudioInputSettings() OVERRIDE;
 
   // SpeechRecognitionEventListener methods.
   virtual void OnRecognitionStart(int session_id) OVERRIDE;
   virtual void OnAudioStart(int session_id) OVERRIDE;
   virtual void OnEnvironmentEstimationComplete(int session_id) OVERRIDE;
   virtual void OnSoundStart(int session_id) OVERRIDE;
   virtual void OnSoundEnd(int session_id) OVERRIDE;
   virtual void OnAudioEnd(int session_id) OVERRIDE;
   virtual void OnRecognitionEnd(int session_id) OVERRIDE;
   virtual void OnRecognitionResult(
-      int session_id, const content::SpeechRecognitionResult& result) OVERRIDE;
+      int session_id, const SpeechRecognitionResult& result) OVERRIDE;
   virtual void OnRecognitionError(
-      int session_id, const content::SpeechRecognitionError& error) OVERRIDE;
+      int session_id, const SpeechRecognitionError& error) OVERRIDE;
   virtual void OnAudioLevelsChange(int session_id, float volume,
                                    float noise_volume) OVERRIDE;
 
  protected:
   // BrowserMainLoop is the only one allowed to istantiate and free us.
-  friend class content::BrowserMainLoop;
+  friend class BrowserMainLoop;
   friend class scoped_ptr<SpeechRecognitionManagerImpl>;  // Needed for dtor.
   SpeechRecognitionManagerImpl();
   virtual ~SpeechRecognitionManagerImpl();
 
  private:
   // Data types for the internal Finite State Machine (FSM).
   enum FSMState {
     SESSION_STATE_IDLE = 0,
     SESSION_STATE_CAPTURING_AUDIO,
     SESSION_STATE_WAITING_FOR_RESULT,
     SESSION_STATE_MAX_VALUE = SESSION_STATE_WAITING_FOR_RESULT
   };
 
   enum FSMEvent {
     EVENT_ABORT = 0,
     EVENT_START,
     EVENT_STOP_CAPTURE,
     EVENT_AUDIO_ENDED,
     EVENT_RECOGNITION_ENDED,
     EVENT_MAX_VALUE = EVENT_RECOGNITION_ENDED
   };
 
   struct Session {
     Session();
     ~Session();
 
     int id;
     bool listener_is_active;
-    content::SpeechRecognitionSessionConfig config;
-    content::SpeechRecognitionSessionContext context;
+    SpeechRecognitionSessionConfig config;
+    SpeechRecognitionSessionContext context;
     scoped_refptr<SpeechRecognizer> recognizer;
   };
 
   // Callback issued by the SpeechRecognitionManagerDelegate for reporting
   // asynchronously the result of the CheckRecognitionIsAllowed call.
   void RecognitionAllowedCallback(int session_id,
                                   bool ask_user,
                                   bool is_allowed);
 
   // Entry point for pushing any external event into the session handling FSM.
@@ skipping 10 matching lines @@
   // The methods below handle transitions of the session handling FSM.
   void SessionStart(const Session& session);
   void SessionAbort(const Session& session);
   void SessionStopAudioCapture(const Session& session);
   void ResetCapturingSessionId(const Session& session);
   void SessionDelete(const Session& session);
   void NotFeasible(const Session& session, FSMEvent event);
 
   bool SessionExists(int session_id) const;
   const Session& GetSession(int session_id) const;
-  content::SpeechRecognitionEventListener* GetListener(int session_id) const;
-  content::SpeechRecognitionEventListener* GetDelegateListener() const;
+  SpeechRecognitionEventListener* GetListener(int session_id) const;
+  SpeechRecognitionEventListener* GetDelegateListener() const;
   int GetNextSessionID();
 
   typedef std::map<int, Session> SessionsTable;
   SessionsTable sessions_;
   int primary_session_id_;
   int last_session_id_;
   bool is_dispatching_event_;
-  scoped_ptr<content::SpeechRecognitionManagerDelegate> delegate_;
+  scoped_ptr<SpeechRecognitionManagerDelegate> delegate_;
 
   // Used for posting asynchronous tasks (on the IO thread) without worrying
   // about this class being destroyed in the meanwhile (due to browser shutdown)
   // since tasks pending on a destroyed WeakPtr are automatically discarded.
   base::WeakPtrFactory<SpeechRecognitionManagerImpl> weak_factory_;
 
 #if !defined(OS_IOS)
   class PermissionRequest;
   scoped_ptr<PermissionRequest> permission_request_;
 #endif  // !defined(OS_IOS)
 };
 
-}  // namespace speech
+}  // namespace content
 
 #endif  // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_