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   bool PlatformImplAvailable() override;
  16   bool Speak(int utterance_id,
  17              const std::string& utterance,
  18              const std::string& lang,
  19              const VoiceData& voice,
  20              const UtteranceContinuousParameters& params) override;
  21   bool StopSpeaking() override;
  22   void Pause() override;
  23   void Resume() override;
  24   bool IsSpeaking() override;
  25   void GetVoices(std::vector<VoiceData>* out_voices) override;
  26
  27   // Methods called from Java via JNI.
  28   void VoicesChanged(JNIEnv* env, jobject obj);
  29   void OnEndEvent(JNIEnv* env, jobject obj, jint utterance_id);
  30   void OnErrorEvent(JNIEnv* env, jobject obj, jint utterance_id);
  31   void OnStartEvent(JNIEnv* env, jobject obj, jint utterance_id);
  32
  33   // Static functions.
  34   static TtsPlatformImplAndroid* GetInstance();
  35   static bool Register(JNIEnv* env);
  36
  37  private:
  38   friend struct DefaultSingletonTraits<TtsPlatformImplAndroid>;
  39
  40   TtsPlatformImplAndroid();
  41   ~TtsPlatformImplAndroid() override;
  42
  43   void SendFinalTtsEvent(
  44       int utterance_id, TtsEventType event_type, int char_index);
  45
  46   base::android::ScopedJavaGlobalRef<jobject> java_ref_;
  47   int utterance_id_;
  48   std::string utterance_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(TtsPlatformImplAndroid);
  51 };
  52
  53 #endif  // CHROME_BROWSER_SPEECH_TTS_ANDROID_H_