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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_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ | 5 #ifndef CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ |
6 #define CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ | 6 #define CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
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24 } | 24 } |
25 | 25 |
26 namespace net { | 26 namespace net { |
27 class URLRequestContextGetter; | 27 class URLRequestContextGetter; |
28 } | 28 } |
29 | 29 |
30 namespace speech { | 30 namespace speech { |
31 | 31 |
32 class AudioChunk; | 32 class AudioChunk; |
33 | 33 |
34 struct CONTENT_EXPORT GoogleOneShotRemoteEngineConfig { | |
35 std::string language; | |
36 std::string grammar; | |
37 bool filter_profanities; | |
38 std::string hardware_info; | |
39 std::string origin_url; | |
40 int audio_sample_rate; | |
41 int audio_num_bits_per_sample; | |
42 | |
43 GoogleOneShotRemoteEngineConfig(); | |
44 ~GoogleOneShotRemoteEngineConfig(); | |
45 }; | |
46 | |
47 // Implements a SpeechRecognitionEngine by means of remote interaction with | 34 // Implements a SpeechRecognitionEngine by means of remote interaction with |
48 // Google speech recognition webservice. | 35 // Google speech recognition webservice. |
49 class CONTENT_EXPORT GoogleOneShotRemoteEngine | 36 class CONTENT_EXPORT GoogleOneShotRemoteEngine |
50 : public NON_EXPORTED_BASE(SpeechRecognitionEngine), | 37 : public NON_EXPORTED_BASE(SpeechRecognitionEngine), |
51 public content::URLFetcherDelegate { | 38 public content::URLFetcherDelegate { |
52 public: | 39 public: |
53 // Duration of each audio packet. | 40 // Duration of each audio packet. |
54 static const int kAudioPacketIntervalMs; | 41 static const int kAudioPacketIntervalMs; |
55 // ID passed to URLFetcher::Create(). Used for testing. | 42 // ID passed to URLFetcher::Create(). Used for testing. |
56 static int url_fetcher_id_for_tests; | 43 static int url_fetcher_id_for_tests; |
57 | 44 |
58 explicit GoogleOneShotRemoteEngine(net::URLRequestContextGetter* context); | 45 explicit GoogleOneShotRemoteEngine(net::URLRequestContextGetter* context); |
59 virtual ~GoogleOneShotRemoteEngine(); | 46 virtual ~GoogleOneShotRemoteEngine(); |
60 void SetConfig(const GoogleOneShotRemoteEngineConfig& config); | |
61 | 47 |
62 // SpeechRecognitionEngine methods. | 48 // SpeechRecognitionEngine methods. |
| 49 virtual void SetConfig(const SpeechRecognitionEngineConfig& config) OVERRIDE; |
63 virtual void StartRecognition() OVERRIDE; | 50 virtual void StartRecognition() OVERRIDE; |
64 virtual void EndRecognition() OVERRIDE; | 51 virtual void EndRecognition() OVERRIDE; |
65 virtual void TakeAudioChunk(const AudioChunk& data) OVERRIDE; | 52 virtual void TakeAudioChunk(const AudioChunk& data) OVERRIDE; |
66 virtual void AudioChunksEnded() OVERRIDE; | 53 virtual void AudioChunksEnded() OVERRIDE; |
67 virtual bool IsRecognitionPending() const OVERRIDE; | 54 virtual bool IsRecognitionPending() const OVERRIDE; |
68 virtual int GetDesiredAudioChunkDurationMs() const OVERRIDE; | 55 virtual int GetDesiredAudioChunkDurationMs() const OVERRIDE; |
69 | 56 |
70 // content::URLFetcherDelegate methods. | 57 // content::URLFetcherDelegate methods. |
71 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; | 58 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; |
72 | 59 |
73 private: | 60 private: |
74 GoogleOneShotRemoteEngineConfig config_; | 61 SpeechRecognitionEngineConfig config_; |
75 scoped_ptr<content::URLFetcher> url_fetcher_; | 62 scoped_ptr<content::URLFetcher> url_fetcher_; |
76 scoped_refptr<net::URLRequestContextGetter> url_context_; | 63 scoped_refptr<net::URLRequestContextGetter> url_context_; |
77 scoped_ptr<AudioEncoder> encoder_; | 64 scoped_ptr<AudioEncoder> encoder_; |
78 | 65 |
79 DISALLOW_COPY_AND_ASSIGN(GoogleOneShotRemoteEngine); | 66 DISALLOW_COPY_AND_ASSIGN(GoogleOneShotRemoteEngine); |
80 }; | 67 }; |
81 | 68 |
82 } // namespace speech | 69 } // namespace speech |
83 | 70 |
84 #endif // CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ | 71 #endif // CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ |
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