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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_ | |
6 #define CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_ | |
7 | |
8 #include <map> | |
9 #include <string> | |
10 | |
11 #include "base/basictypes.h" | |
12 #include "base/compiler_specific.h" | |
13 #include "base/memory/ref_counted.h" | |
14 #include "base/memory/singleton.h" | |
15 #include "content/public/browser/speech_input_manager.h" | |
16 #include "content/public/browser/speech_recognizer_delegate.h" | |
17 #include "ui/gfx/rect.h" | |
18 | |
19 class AudioManager; | |
20 | |
21 namespace content { | |
22 class ResourceContext; | |
23 class SpeechInputManagerDelegate; | |
24 class SpeechInputPreferences; | |
25 struct SpeechInputResult; | |
26 } | |
27 | |
28 namespace net { | |
29 class URLRequestContextGetter; | |
30 } | |
31 | |
32 namespace speech_input { | |
33 | |
34 class SpeechInputDispatcherHost; | |
35 class SpeechRecognizerImpl; | |
36 | |
37 class CONTENT_EXPORT SpeechInputManagerImpl | |
38 : NON_EXPORTED_BASE(public content::SpeechInputManager), | |
39 NON_EXPORTED_BASE(public content::SpeechRecognizerDelegate) { | |
40 public: | |
41 static SpeechInputManagerImpl* GetInstance(); | |
42 | |
43 // SpeechInputManager implementation: | |
44 virtual void StartRecognitionForRequest(int caller_id) OVERRIDE; | |
45 virtual void CancelRecognitionForRequest(int caller_id) OVERRIDE; | |
46 virtual void FocusLostForRequest(int caller_id) OVERRIDE; | |
47 virtual bool HasAudioInputDevices() OVERRIDE; | |
48 virtual bool IsRecordingInProcess() OVERRIDE; | |
49 virtual string16 GetAudioInputDeviceModel() OVERRIDE; | |
50 virtual void ShowAudioInputSettings() OVERRIDE; | |
51 | |
52 // Handlers for requests from render views. | |
53 | |
54 // |delegate| is a weak pointer and should remain valid until | |
55 // its |DidCompleteRecognition| method is called or recognition is cancelled. | |
56 // |render_process_id| is the ID of the renderer process initiating the | |
57 // request. | |
58 // |element_rect| is the display bounds of the html element requesting speech | |
59 // input (in page coordinates). | |
60 virtual void StartRecognition( | |
61 SpeechInputDispatcherHost* delegate, | |
62 int caller_id, | |
63 int render_process_id, | |
64 int render_view_id, | |
65 const gfx::Rect& element_rect, | |
66 const std::string& language, | |
67 const std::string& grammar, | |
68 const std::string& origin_url, | |
69 net::URLRequestContextGetter* context_getter, | |
70 content::SpeechInputPreferences* speech_input_prefs); | |
71 virtual void CancelRecognition(int caller_id); | |
72 virtual void CancelAllRequestsWithDelegate( | |
73 SpeechInputDispatcherHost* delegate); | |
74 virtual void StopRecording(int caller_id); | |
75 | |
76 // Overridden from content::SpeechRecognizerDelegate: | |
77 virtual void DidStartReceivingAudio(int caller_id) OVERRIDE; | |
78 virtual void SetRecognitionResult( | |
79 int caller_id, | |
80 const content::SpeechInputResult& result) OVERRIDE; | |
81 virtual void DidCompleteRecording(int caller_id) OVERRIDE; | |
82 virtual void DidCompleteRecognition(int caller_id) OVERRIDE; | |
83 virtual void DidStartReceivingSpeech(int caller_id) OVERRIDE; | |
84 virtual void DidStopReceivingSpeech(int caller_id) OVERRIDE; | |
85 | |
86 virtual void OnRecognizerError(int caller_id, | |
87 content::SpeechInputError error) OVERRIDE; | |
88 virtual void DidCompleteEnvironmentEstimation(int caller_id) OVERRIDE; | |
89 virtual void SetInputVolume(int caller_id, float volume, | |
90 float noise_volume) OVERRIDE; | |
91 | |
92 protected: | |
93 // Private constructor to enforce singleton. | |
94 friend struct DefaultSingletonTraits<SpeechInputManagerImpl>; | |
95 SpeechInputManagerImpl(); | |
96 virtual ~SpeechInputManagerImpl(); | |
97 | |
98 bool HasPendingRequest(int caller_id) const; | |
99 | |
100 private: | |
101 struct SpeechInputRequest { | |
102 SpeechInputRequest(); | |
103 ~SpeechInputRequest(); | |
104 | |
105 SpeechInputDispatcherHost* delegate; | |
106 scoped_refptr<SpeechRecognizerImpl> recognizer; | |
107 bool is_active; // Set to true when recording or recognition is going on. | |
108 }; | |
109 | |
110 struct SpeechInputParams; | |
111 | |
112 SpeechInputDispatcherHost* GetDelegate(int caller_id) const; | |
113 | |
114 void CheckRenderViewTypeAndStartRecognition(const SpeechInputParams& params); | |
115 void ProceedStartingRecognition(const SpeechInputParams& params); | |
116 | |
117 void CancelRecognitionAndInformDelegate(int caller_id); | |
118 | |
119 typedef std::map<int, SpeechInputRequest> SpeechRecognizerMap; | |
120 SpeechRecognizerMap requests_; | |
121 std::string request_info_; | |
122 bool can_report_metrics_; | |
123 int recording_caller_id_; | |
124 content::SpeechInputManagerDelegate* delegate_; | |
125 }; | |
126 | |
127 } // namespace speech_input | |
128 | |
129 #endif // CONTENT_BROWSER_SPEECH_SPEECH_INPUT_MANAGER_H_ | |
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