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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ | 5 #ifndef CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ |
6 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ | 6 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/callback.h" | 12 #include "base/callback.h" |
13 #include "base/compiler_specific.h" | 13 #include "base/compiler_specific.h" |
14 #include "base/memory/weak_ptr.h" | 14 #include "base/memory/weak_ptr.h" |
15 #include "content/browser/renderer_host/media/media_stream_requester.h" | 15 #include "content/browser/renderer_host/media/media_stream_requester.h" |
16 #include "content/public/browser/speech_recognition_event_listener.h" | 16 #include "content/public/browser/speech_recognition_event_listener.h" |
17 #include "content/public/browser/speech_recognition_manager.h" | 17 #include "content/public/browser/speech_recognition_manager.h" |
18 #include "content/public/browser/speech_recognition_session_config.h" | 18 #include "content/public/browser/speech_recognition_session_config.h" |
19 #include "content/public/browser/speech_recognition_session_context.h" | 19 #include "content/public/browser/speech_recognition_session_context.h" |
20 #include "content/public/common/speech_recognition_error.h" | 20 #include "content/public/common/speech_recognition_error.h" |
21 | 21 |
| 22 namespace media { |
| 23 class AudioManager; |
| 24 } |
| 25 |
22 namespace content { | 26 namespace content { |
23 class BrowserMainLoop; | 27 class BrowserMainLoop; |
| 28 class MediaStreamManager; |
24 class MediaStreamUIProxy; | 29 class MediaStreamUIProxy; |
25 class SpeechRecognitionManagerDelegate; | 30 class SpeechRecognitionManagerDelegate; |
26 class SpeechRecognizer; | 31 class SpeechRecognizer; |
27 | 32 |
28 // This is the manager for speech recognition. It is a single instance in | 33 // This is the manager for speech recognition. It is a single instance in |
29 // the browser process and can serve several requests. Each recognition request | 34 // the browser process and can serve several requests. Each recognition request |
30 // corresponds to a session, initiated via |CreateSession|. | 35 // corresponds to a session, initiated via |CreateSession|. |
31 // | 36 // |
32 // In any moment, the manager has a single session known as the primary session, | 37 // In any moment, the manager has a single session known as the primary session, |
33 // |primary_session_id_|. | 38 // |primary_session_id_|. |
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86 virtual void OnRecognitionError( | 91 virtual void OnRecognitionError( |
87 int session_id, const SpeechRecognitionError& error) OVERRIDE; | 92 int session_id, const SpeechRecognitionError& error) OVERRIDE; |
88 virtual void OnAudioLevelsChange(int session_id, float volume, | 93 virtual void OnAudioLevelsChange(int session_id, float volume, |
89 float noise_volume) OVERRIDE; | 94 float noise_volume) OVERRIDE; |
90 | 95 |
91 protected: | 96 protected: |
92 // BrowserMainLoop is the only one allowed to istantiate and free us. | 97 // BrowserMainLoop is the only one allowed to istantiate and free us. |
93 friend class BrowserMainLoop; | 98 friend class BrowserMainLoop; |
94 // Needed for dtor. | 99 // Needed for dtor. |
95 friend struct base::DefaultDeleter<SpeechRecognitionManagerImpl>; | 100 friend struct base::DefaultDeleter<SpeechRecognitionManagerImpl>; |
96 SpeechRecognitionManagerImpl(); | 101 SpeechRecognitionManagerImpl(media::AudioManager* audio_manager, |
| 102 MediaStreamManager* media_stream_manager); |
97 virtual ~SpeechRecognitionManagerImpl(); | 103 virtual ~SpeechRecognitionManagerImpl(); |
98 | 104 |
99 private: | 105 private: |
100 // Data types for the internal Finite State Machine (FSM). | 106 // Data types for the internal Finite State Machine (FSM). |
101 enum FSMState { | 107 enum FSMState { |
102 SESSION_STATE_IDLE = 0, | 108 SESSION_STATE_IDLE = 0, |
103 SESSION_STATE_CAPTURING_AUDIO, | 109 SESSION_STATE_CAPTURING_AUDIO, |
104 SESSION_STATE_WAITING_FOR_RESULT, | 110 SESSION_STATE_WAITING_FOR_RESULT, |
105 SESSION_STATE_MAX_VALUE = SESSION_STATE_WAITING_FOR_RESULT | 111 SESSION_STATE_MAX_VALUE = SESSION_STATE_WAITING_FOR_RESULT |
106 }; | 112 }; |
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158 void ResetCapturingSessionId(const Session& session); | 164 void ResetCapturingSessionId(const Session& session); |
159 void SessionDelete(Session* session); | 165 void SessionDelete(Session* session); |
160 void NotFeasible(const Session& session, FSMEvent event); | 166 void NotFeasible(const Session& session, FSMEvent event); |
161 | 167 |
162 bool SessionExists(int session_id) const; | 168 bool SessionExists(int session_id) const; |
163 Session* GetSession(int session_id) const; | 169 Session* GetSession(int session_id) const; |
164 SpeechRecognitionEventListener* GetListener(int session_id) const; | 170 SpeechRecognitionEventListener* GetListener(int session_id) const; |
165 SpeechRecognitionEventListener* GetDelegateListener() const; | 171 SpeechRecognitionEventListener* GetDelegateListener() const; |
166 int GetNextSessionID(); | 172 int GetNextSessionID(); |
167 | 173 |
| 174 media::AudioManager* audio_manager_; |
| 175 MediaStreamManager* media_stream_manager_; |
168 typedef std::map<int, Session*> SessionsTable; | 176 typedef std::map<int, Session*> SessionsTable; |
169 SessionsTable sessions_; | 177 SessionsTable sessions_; |
170 int primary_session_id_; | 178 int primary_session_id_; |
171 int last_session_id_; | 179 int last_session_id_; |
172 bool is_dispatching_event_; | 180 bool is_dispatching_event_; |
173 scoped_ptr<SpeechRecognitionManagerDelegate> delegate_; | 181 scoped_ptr<SpeechRecognitionManagerDelegate> delegate_; |
174 | 182 |
175 // Used for posting asynchronous tasks (on the IO thread) without worrying | 183 // Used for posting asynchronous tasks (on the IO thread) without worrying |
176 // about this class being destroyed in the meanwhile (due to browser shutdown) | 184 // about this class being destroyed in the meanwhile (due to browser shutdown) |
177 // since tasks pending on a destroyed WeakPtr are automatically discarded. | 185 // since tasks pending on a destroyed WeakPtr are automatically discarded. |
178 base::WeakPtrFactory<SpeechRecognitionManagerImpl> weak_factory_; | 186 base::WeakPtrFactory<SpeechRecognitionManagerImpl> weak_factory_; |
179 }; | 187 }; |
180 | 188 |
181 } // namespace content | 189 } // namespace content |
182 | 190 |
183 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ | 191 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ |
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