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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 <memory> | 9 #include <memory> |
10 #include <string> | 10 #include <string> |
11 | 11 |
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 AudioSystem; |
| 24 } |
| 25 |
22 namespace content { | 26 namespace content { |
23 class BrowserMainLoop; | 27 class BrowserMainLoop; |
24 class MediaStreamManager; | 28 class MediaStreamManager; |
25 class MediaStreamUIProxy; | 29 class MediaStreamUIProxy; |
26 class SpeechRecognitionManagerDelegate; | 30 class SpeechRecognitionManagerDelegate; |
27 class SpeechRecognizer; | 31 class SpeechRecognizer; |
28 | 32 |
29 // 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 |
30 // the browser process and can serve several requests. Each recognition request | 34 // the browser process and can serve several requests. Each recognition request |
31 // corresponds to a session, initiated via |CreateSession|. | 35 // corresponds to a session, initiated via |CreateSession|. |
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85 float volume, | 89 float volume, |
86 float noise_volume) override; | 90 float noise_volume) override; |
87 | 91 |
88 SpeechRecognitionManagerDelegate* delegate() const { return delegate_.get(); } | 92 SpeechRecognitionManagerDelegate* delegate() const { return delegate_.get(); } |
89 | 93 |
90 protected: | 94 protected: |
91 // BrowserMainLoop is the only one allowed to istantiate and free us. | 95 // BrowserMainLoop is the only one allowed to istantiate and free us. |
92 friend class BrowserMainLoop; | 96 friend class BrowserMainLoop; |
93 // Needed for dtor. | 97 // Needed for dtor. |
94 friend std::default_delete<SpeechRecognitionManagerImpl>; | 98 friend std::default_delete<SpeechRecognitionManagerImpl>; |
95 SpeechRecognitionManagerImpl(MediaStreamManager* media_stream_manager); | 99 SpeechRecognitionManagerImpl(media::AudioSystem* audio_system, |
| 100 MediaStreamManager* media_stream_manager); |
96 ~SpeechRecognitionManagerImpl() override; | 101 ~SpeechRecognitionManagerImpl() override; |
97 | 102 |
98 private: | 103 private: |
99 // Data types for the internal Finite State Machine (FSM). | 104 // Data types for the internal Finite State Machine (FSM). |
100 enum FSMState { | 105 enum FSMState { |
101 SESSION_STATE_IDLE = 0, | 106 SESSION_STATE_IDLE = 0, |
102 SESSION_STATE_CAPTURING_AUDIO, | 107 SESSION_STATE_CAPTURING_AUDIO, |
103 SESSION_STATE_WAITING_FOR_RESULT, | 108 SESSION_STATE_WAITING_FOR_RESULT, |
104 SESSION_STATE_MAX_VALUE = SESSION_STATE_WAITING_FOR_RESULT | 109 SESSION_STATE_MAX_VALUE = SESSION_STATE_WAITING_FOR_RESULT |
105 }; | 110 }; |
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159 void ResetCapturingSessionId(const Session& session); | 164 void ResetCapturingSessionId(const Session& session); |
160 void SessionDelete(Session* session); | 165 void SessionDelete(Session* session); |
161 void NotFeasible(const Session& session, FSMEvent event); | 166 void NotFeasible(const Session& session, FSMEvent event); |
162 | 167 |
163 bool SessionExists(int session_id) const; | 168 bool SessionExists(int session_id) const; |
164 Session* GetSession(int session_id) const; | 169 Session* GetSession(int session_id) const; |
165 SpeechRecognitionEventListener* GetListener(int session_id) const; | 170 SpeechRecognitionEventListener* GetListener(int session_id) const; |
166 SpeechRecognitionEventListener* GetDelegateListener() const; | 171 SpeechRecognitionEventListener* GetDelegateListener() const; |
167 int GetNextSessionID(); | 172 int GetNextSessionID(); |
168 | 173 |
| 174 media::AudioSystem* audio_system_; |
169 MediaStreamManager* media_stream_manager_; | 175 MediaStreamManager* media_stream_manager_; |
170 typedef std::map<int, Session*> SessionsTable; | 176 typedef std::map<int, Session*> SessionsTable; |
171 SessionsTable sessions_; | 177 SessionsTable sessions_; |
172 int primary_session_id_; | 178 int primary_session_id_; |
173 int last_session_id_; | 179 int last_session_id_; |
174 bool is_dispatching_event_; | 180 bool is_dispatching_event_; |
175 std::unique_ptr<SpeechRecognitionManagerDelegate> delegate_; | 181 std::unique_ptr<SpeechRecognitionManagerDelegate> delegate_; |
176 | 182 |
177 // Used for posting asynchronous tasks (on the IO thread) without worrying | 183 // Used for posting asynchronous tasks (on the IO thread) without worrying |
178 // 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) |
179 // since tasks pending on a destroyed WeakPtr are automatically discarded. | 185 // since tasks pending on a destroyed WeakPtr are automatically discarded. |
180 base::WeakPtrFactory<SpeechRecognitionManagerImpl> weak_factory_; | 186 base::WeakPtrFactory<SpeechRecognitionManagerImpl> weak_factory_; |
181 }; | 187 }; |
182 | 188 |
183 } // namespace content | 189 } // namespace content |
184 | 190 |
185 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ | 191 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNITION_MANAGER_IMPL_H_ |
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