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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_RECOGNIZER_H_ | 5 #ifndef CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |
6 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ | 6 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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76 EVENT_MAX_VALUE = EVENT_AUDIO_ERROR | 76 EVENT_MAX_VALUE = EVENT_AUDIO_ERROR |
77 }; | 77 }; |
78 | 78 |
79 struct FSMEventArgs { | 79 struct FSMEventArgs { |
80 explicit FSMEventArgs(FSMEvent event_value); | 80 explicit FSMEventArgs(FSMEvent event_value); |
81 ~FSMEventArgs(); | 81 ~FSMEventArgs(); |
82 | 82 |
83 FSMEvent event; | 83 FSMEvent event; |
84 int audio_error_code; | 84 int audio_error_code; |
85 scoped_refptr<AudioChunk> audio_data; | 85 scoped_refptr<AudioChunk> audio_data; |
86 SpeechRecognitionResults engine_results; | 86 SpeechRecognitionResult engine_result; |
87 SpeechRecognitionError engine_error; | 87 SpeechRecognitionError engine_error; |
88 }; | 88 }; |
89 | 89 |
90 virtual ~SpeechRecognizer(); | 90 virtual ~SpeechRecognizer(); |
91 | 91 |
92 // Entry point for pushing any new external event into the recognizer FSM. | 92 // Entry point for pushing any new external event into the recognizer FSM. |
93 void DispatchEvent(const FSMEventArgs& event_args); | 93 void DispatchEvent(const FSMEventArgs& event_args); |
94 | 94 |
95 // Defines the behavior of the recognizer FSM, selecting the appropriate | 95 // Defines the behavior of the recognizer FSM, selecting the appropriate |
96 // transition according to the current state and event. | 96 // transition according to the current state and event. |
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128 | 128 |
129 // AudioInputController::EventHandler methods. | 129 // AudioInputController::EventHandler methods. |
130 virtual void OnCreated(media::AudioInputController* controller) OVERRIDE {} | 130 virtual void OnCreated(media::AudioInputController* controller) OVERRIDE {} |
131 virtual void OnRecording(media::AudioInputController* controller) OVERRIDE {} | 131 virtual void OnRecording(media::AudioInputController* controller) OVERRIDE {} |
132 virtual void OnError(media::AudioInputController* controller, | 132 virtual void OnError(media::AudioInputController* controller, |
133 int error_code) OVERRIDE; | 133 int error_code) OVERRIDE; |
134 virtual void OnData(media::AudioInputController* controller, | 134 virtual void OnData(media::AudioInputController* controller, |
135 const uint8* data, uint32 size) OVERRIDE; | 135 const uint8* data, uint32 size) OVERRIDE; |
136 | 136 |
137 // SpeechRecognitionEngineDelegate methods. | 137 // SpeechRecognitionEngineDelegate methods. |
138 virtual void OnSpeechRecognitionEngineResults( | 138 virtual void OnSpeechRecognitionEngineResult( |
139 const SpeechRecognitionResults& results) OVERRIDE; | 139 const SpeechRecognitionResult& result) OVERRIDE; |
140 virtual void OnSpeechRecognitionEngineError( | 140 virtual void OnSpeechRecognitionEngineError( |
141 const SpeechRecognitionError& error) OVERRIDE; | 141 const SpeechRecognitionError& error) OVERRIDE; |
142 | 142 |
143 static media::AudioManager* audio_manager_for_tests_; | 143 static media::AudioManager* audio_manager_for_tests_; |
144 | 144 |
145 SpeechRecognitionEventListener* listener_; | 145 SpeechRecognitionEventListener* listener_; |
146 scoped_ptr<SpeechRecognitionEngine> recognition_engine_; | 146 scoped_ptr<SpeechRecognitionEngine> recognition_engine_; |
147 Endpointer endpointer_; | 147 Endpointer endpointer_; |
148 scoped_refptr<media::AudioInputController> audio_controller_; | 148 scoped_refptr<media::AudioInputController> audio_controller_; |
149 int session_id_; | 149 int session_id_; |
150 int num_samples_recorded_; | 150 int num_samples_recorded_; |
151 float audio_level_; | 151 float audio_level_; |
152 bool is_dispatching_event_; | 152 bool is_dispatching_event_; |
153 bool is_single_shot_; | 153 bool is_single_shot_; |
154 FSMState state_; | 154 FSMState state_; |
155 | 155 |
156 DISALLOW_COPY_AND_ASSIGN(SpeechRecognizer); | 156 DISALLOW_COPY_AND_ASSIGN(SpeechRecognizer); |
157 }; | 157 }; |
158 | 158 |
159 } // namespace content | 159 } // namespace content |
160 | 160 |
161 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ | 161 #endif // CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |
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