SpeechTrackListener.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_SpeechStreamListener_h

#define mozilla_dom_SpeechStreamListener_h

#include "MediaTrackGraph.h"

#include "MediaTrackListener.h"

#include "AudioSegment.h"

#include "mozilla/MozPromise.h"

namespace mozilla {

class AudioSegment;

namespace dom {

class SpeechRecognition;

class SpeechTrackListener : public MediaTrackListener {

 private:

  explicit SpeechTrackListener(SpeechRecognition* aRecognition);

 public:

  static already_AddRefed<SpeechTrackListener> Create(

      SpeechRecognition* aRecognition);

  ~SpeechTrackListener() = default;

  void NotifyQueuedChanges(MediaTrackGraph* aGraph, TrackTime aTrackOffset,

                           const MediaSegment& aQueuedMedia) override;

  void NotifyEnded(MediaTrackGraph* aGraph) override;

  void NotifyRemoved(MediaTrackGraph* aGraph) override;

 private:

  template <typename SampleFormatType>

  void ConvertAndDispatchAudioChunk(int aDuration, float aVolume,

                                    SampleFormatType* aData,

                                    TrackRate aTrackRate);

  nsMainThreadPtrHandle<SpeechRecognition> mRecognition;

  MozPromiseHolder<GenericNonExclusivePromise> mRemovedHolder;

 public:

  const RefPtr<GenericNonExclusivePromise> mRemovedPromise;

};

}  // namespace dom

}  // namespace mozilla

#endif