text: // Copyright 2021 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_SERVICE_H_
  #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_SERVICE_H_
  
  #include "chrome/browser/speech/speech_recognition_service.h"
  #include "components/keyed_service/core/keyed_service.h"
  #include "media/mojo/mojom/speech_recognition_service.mojom.h"
  #include "mojo/public/cpp/bindings/receiver.h"
  #include "mojo/public/cpp/bindings/remote.h"
  
  class PrefService;
  
  namespace content {
  class BrowserContext;
  }  // namespace content
  
  namespace speech {
  
  // Provides a mojo endpoint in the browser that allows the renderer process to
  // launch and initialize the sandboxed speech recognition service
  // process.
  class ChromeSpeechRecognitionService
      : public SpeechRecognitionService,
        public media::mojom::SpeechRecognitionServiceClient {
   public:
    explicit ChromeSpeechRecognitionService(content::BrowserContext* context);
    ChromeSpeechRecognitionService(const ChromeSpeechRecognitionService&) =
        delete;
    ChromeSpeechRecognitionService& operator=(const SpeechRecognitionService&) =
        delete;
    ~ChromeSpeechRecognitionService() override;
  
    void Create(mojo::PendingReceiver<media::mojom::SpeechRecognitionContext>
                    receiver) override;
  
    // media::mojom::SpeechRecognitionServiceClient
    void OnNetworkServiceDisconnect() override;
  
   protected:
    // A flag indicating whether to use the Speech On-Device API (SODA) for speech
    // recognition.
    const bool enable_soda_;
  
   private:
    // Launches the speech recognition service in a sandboxed utility process.
    void LaunchIfNotRunning();
  
    // Gets the path of the SODA configuration file for the selected language.
    base::FilePath GetSodaConfigPath(PrefService* prefs);
  
    // The browser context associated with the keyed service.
    content::BrowserContext* const context_;
  
    // The remote to the speech recognition service. The browser will not launch a
    // new speech recognition service process if this remote is already bound.
    mojo::Remote<media::mojom::SpeechRecognitionService>
        speech_recognition_service_;
  
    mojo::Receiver<media::mojom::SpeechRecognitionServiceClient>
        speech_recognition_service_client_{this};
  };
  
  }  // namespace speech
  
  #endif  // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_SERVICE_H_
  