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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 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
| 13 #include "base/memory/scoped_ptr.h" | 13 #include "base/memory/scoped_ptr.h" |
| 14 #include "content/browser/speech/audio_encoder.h" | 14 #include "content/browser/speech/audio_encoder.h" |
| 15 #include "content/browser/speech/speech_recognition_engine.h" | 15 #include "content/browser/speech/speech_recognition_engine.h" |
| 16 #include "content/common/content_export.h" | 16 #include "content/common/content_export.h" |
| 17 #include "content/public/common/url_fetcher_delegate.h" | |
| 18 #include "googleurl/src/gurl.h" | 17 #include "googleurl/src/gurl.h" |
| 19 | 18 #include "net/url_request/url_fetcher_delegate.h" |
| 20 class URLFetcher; | |
| 21 | 19 |
| 22 namespace content { | 20 namespace content { |
| 23 struct SpeechRecognitionResult; | 21 struct SpeechRecognitionResult; |
| 22 class URLFetcher; |
| 24 } | 23 } |
| 25 | 24 |
| 26 namespace net { | 25 namespace net { |
| 27 class URLRequestContextGetter; | 26 class URLRequestContextGetter; |
| 28 } | 27 } |
| 29 | 28 |
| 30 namespace speech { | 29 namespace speech { |
| 31 | 30 |
| 32 class AudioChunk; | 31 class AudioChunk; |
| 33 | 32 |
| 34 // Implements a SpeechRecognitionEngine by means of remote interaction with | 33 // Implements a SpeechRecognitionEngine by means of remote interaction with |
| 35 // Google speech recognition webservice. | 34 // Google speech recognition webservice. |
| 36 class CONTENT_EXPORT GoogleOneShotRemoteEngine | 35 class CONTENT_EXPORT GoogleOneShotRemoteEngine |
| 37 : public NON_EXPORTED_BASE(SpeechRecognitionEngine), | 36 : public NON_EXPORTED_BASE(SpeechRecognitionEngine), |
| 38 public content::URLFetcherDelegate { | 37 public net::URLFetcherDelegate { |
| 39 public: | 38 public: |
| 40 // Duration of each audio packet. | 39 // Duration of each audio packet. |
| 41 static const int kAudioPacketIntervalMs; | 40 static const int kAudioPacketIntervalMs; |
| 42 // ID passed to URLFetcher::Create(). Used for testing. | 41 // ID passed to URLFetcher::Create(). Used for testing. |
| 43 static int url_fetcher_id_for_tests; | 42 static int url_fetcher_id_for_tests; |
| 44 | 43 |
| 45 explicit GoogleOneShotRemoteEngine(net::URLRequestContextGetter* context); | 44 explicit GoogleOneShotRemoteEngine(net::URLRequestContextGetter* context); |
| 46 virtual ~GoogleOneShotRemoteEngine(); | 45 virtual ~GoogleOneShotRemoteEngine(); |
| 47 | 46 |
| 48 // SpeechRecognitionEngine methods. | 47 // SpeechRecognitionEngine methods. |
| 49 virtual void SetConfig(const SpeechRecognitionEngineConfig& config) OVERRIDE; | 48 virtual void SetConfig(const SpeechRecognitionEngineConfig& config) OVERRIDE; |
| 50 virtual void StartRecognition() OVERRIDE; | 49 virtual void StartRecognition() OVERRIDE; |
| 51 virtual void EndRecognition() OVERRIDE; | 50 virtual void EndRecognition() OVERRIDE; |
| 52 virtual void TakeAudioChunk(const AudioChunk& data) OVERRIDE; | 51 virtual void TakeAudioChunk(const AudioChunk& data) OVERRIDE; |
| 53 virtual void AudioChunksEnded() OVERRIDE; | 52 virtual void AudioChunksEnded() OVERRIDE; |
| 54 virtual bool IsRecognitionPending() const OVERRIDE; | 53 virtual bool IsRecognitionPending() const OVERRIDE; |
| 55 virtual int GetDesiredAudioChunkDurationMs() const OVERRIDE; | 54 virtual int GetDesiredAudioChunkDurationMs() const OVERRIDE; |
| 56 | 55 |
| 57 // content::URLFetcherDelegate methods. | 56 // net::URLFetcherDelegate methods. |
| 58 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; | 57 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; |
| 59 | 58 |
| 60 private: | 59 private: |
| 61 SpeechRecognitionEngineConfig config_; | 60 SpeechRecognitionEngineConfig config_; |
| 62 scoped_ptr<content::URLFetcher> url_fetcher_; | 61 scoped_ptr<content::URLFetcher> url_fetcher_; |
| 63 scoped_refptr<net::URLRequestContextGetter> url_context_; | 62 scoped_refptr<net::URLRequestContextGetter> url_context_; |
| 64 scoped_ptr<AudioEncoder> encoder_; | 63 scoped_ptr<AudioEncoder> encoder_; |
| 65 | 64 |
| 66 DISALLOW_COPY_AND_ASSIGN(GoogleOneShotRemoteEngine); | 65 DISALLOW_COPY_AND_ASSIGN(GoogleOneShotRemoteEngine); |
| 67 }; | 66 }; |
| 68 | 67 |
| 69 } // namespace speech | 68 } // namespace speech |
| 70 | 69 |
| 71 #endif // CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ | 70 #endif // CONTENT_BROWSER_SPEECH_GOOGLE_ONE_SHOT_REMOTE_ENGINE_H_ |
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