review.tizen.org Git - platform/framework/web/crosswalk-tizen.git/blob

   1 // Copyright 2016 Samsung Electronics Inc. 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_RECOGNIZER_IMPL_TIZEN_
   6 #define CONTENT_BROWSER_SPEECH_SPEECH_RECOGNIZER_IMPL_TIZEN_
   7
   8 #include <stt.h>
   9 #include <vector>
  10
  11 #include "base/location.h"
  12 #include "base/strings/string16.h"
  13 #include "content/browser/speech/speech_recognizer.h"
  14 #include "content/public/common/speech_recognition_result.h"
  15
  16 namespace content {
  17
  18 class SpeechRecognitionEventListener;
  19 struct SpeechRecognitionError;
  20
  21 class CONTENT_EXPORT SpeechRecognizerImplTizen : public SpeechRecognizer {
  22  public:
  23   SpeechRecognizerImplTizen(SpeechRecognitionEventListener* listener,
  24                             int session_id);
  25
  26   // SpeechRecognizer methods.
  27   void StartRecognition(const std::string& device_id) override;
  28   void AbortRecognition() override;
  29   void StopAudioCapture() override;
  30   bool IsActive() const override;
  31   bool IsCapturingAudio() const override;
  32
  33  private:
  34   ~SpeechRecognizerImplTizen() override;
  35
  36   bool Initialize();
  37   void StartInternal();
  38   void Destroy();
  39   stt_state_e GetCurrentState() const;
  40   bool ShouldStartRecognition() const;
  41   void RecognitionResults(bool no_speech,
  42                           const SpeechRecognitionResults& results);
  43   void HandleSttError(stt_error_e error,
  44                       const tracked_objects::Location& location);
  45   void HandleSttResultError(const std::string error);
  46   void RecognitionStarted();
  47   void AudioCaptureEnd();
  48   void EndRecognition(const tracked_objects::Location& location);
  49
  50   // Callbacks
  51   static bool OnSupportedLanguages(stt_h stt,
  52                                    const char* language,
  53                                    void* user_data);
  54   static void OnRecognitionResult(stt_h stt,
  55                                   stt_result_event_e event,
  56                                   const char** data,
  57                                   int data_count,
  58                                   const char* msg,
  59                                   void* user_data);
  60   static void OnStateChange(stt_h stt,
  61                             stt_state_e previous,
  62                             stt_state_e current,
  63                             void* user_data);
  64   static void OnError(stt_h stt, stt_error_e reason, void* user_data);
  65
  66   stt_h handle_;
  67   std::string language_;
  68   bool is_lang_supported_;
  69   bool continuous_;
  70   std::string recognition_type_;
  71   bool is_aborted_;
  72 };
  73
  74 }  // content
  75
  76 #endif  // BROWSER_SPEECH_SPEECH_RECOGNIZER_IMPL_TIZEN_