chrome/browser/speech/tts_android.h

   1 // Copyright (c) 2013 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 CHROME_BROWSER_SPEECH_TTS_ANDROID_H_
   6 #define CHROME_BROWSER_SPEECH_TTS_ANDROID_H_
   7
   8 #include "base/android/jni_android.h"
   9 #include "base/android/scoped_java_ref.h"
  10 #include "chrome/browser/speech/tts_platform.h"
  11
  12 class TtsPlatformImplAndroid : public TtsPlatformImpl {
  13  public:
  14   // TtsPlatformImpl implementation.
  15   virtual bool PlatformImplAvailable() override;
  16   virtual bool Speak(
  17       int utterance_id,
  18       const std::string& utterance,
  19       const std::string& lang,
  20       const VoiceData& voice,
  21       const UtteranceContinuousParameters& params) override;
  22   virtual bool StopSpeaking() override;
  23   virtual void Pause() override;
  24   virtual void Resume() override;
  25   virtual bool IsSpeaking() override;
  26   virtual void GetVoices(std::vector<VoiceData>* out_voices) override;
  27
  28   // Methods called from Java via JNI.
  29   void VoicesChanged(JNIEnv* env, jobject obj);
  30   void OnEndEvent(JNIEnv* env, jobject obj, jint utterance_id);
  31   void OnErrorEvent(JNIEnv* env, jobject obj, jint utterance_id);
  32   void OnStartEvent(JNIEnv* env, jobject obj, jint utterance_id);
  33
  34   // Static functions.
  35   static TtsPlatformImplAndroid* GetInstance();
  36   static bool Register(JNIEnv* env);
  37
  38  private:
  39   friend struct DefaultSingletonTraits<TtsPlatformImplAndroid>;
  40
  41   TtsPlatformImplAndroid();
  42   virtual ~TtsPlatformImplAndroid();
  43
  44   void SendFinalTtsEvent(
  45       int utterance_id, TtsEventType event_type, int char_index);
  46
  47   base::android::ScopedJavaGlobalRef<jobject> java_ref_;
  48   int utterance_id_;
  49   std::string utterance_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(TtsPlatformImplAndroid);
  52 };
  53
  54 #endif  // CHROME_BROWSER_SPEECH_TTS_ANDROID_H_