chrome/browser/speech/speech_recognition_service.h

// Copyright 2020 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_SPEECH_RECOGNITION_SERVICE_H_
#define 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/remote.h"

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 SpeechRecognitionService : public KeyedService {
 public:
  SpeechRecognitionService();
  SpeechRecognitionService(const SpeechRecognitionService&) = delete;
  SpeechRecognitionService& operator=(const SpeechRecognitionService&) = delete;
  ~SpeechRecognitionService() override;

  void Create(
      mojo::PendingReceiver<media::mojom::SpeechRecognitionContext> receiver);

 private:
  // Launches the speech recognition service in a sandboxed utility process.
  void LaunchIfNotRunning();

  // 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_;
};

}  // namespace speech

#endif  // CHROME_BROWSER_SPEECH_SPEECH_RECOGNITION_SERVICE_H_