dom/media/webspeech/recognition/SpeechTrackListener.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_SpeechStreamListener_h
   8 #define mozilla_dom_SpeechStreamListener_h
   9
  10 #include "MediaTrackGraph.h"
  11 #include "MediaTrackListener.h"
  12 #include "AudioSegment.h"
  13 #include "mozilla/MozPromise.h"
  14
  15 namespace mozilla {
  16
  17 class AudioSegment;
  18
  19 namespace dom {
  20
  21 class SpeechRecognition;
  22
  23 class SpeechTrackListener : public MediaTrackListener {
  24  private:
  25   explicit SpeechTrackListener(SpeechRecognition* aRecognition);
  26
  27  public:
  28   static already_AddRefed<SpeechTrackListener> Create(
  29       SpeechRecognition* aRecognition);
  30
  31   ~SpeechTrackListener() = default;
  32
  33   void NotifyQueuedChanges(MediaTrackGraph* aGraph, TrackTime aTrackOffset,
  34                            const MediaSegment& aQueuedMedia) override;
  35
  36   void NotifyEnded(MediaTrackGraph* aGraph) override;
  37
  38   void NotifyRemoved(MediaTrackGraph* aGraph) override;
  39
  40  private:
  41   template <typename SampleFormatType>
  42   void ConvertAndDispatchAudioChunk(int aDuration, float aVolume,
  43                                     SampleFormatType* aData,
  44                                     TrackRate aTrackRate);
  45   nsMainThreadPtrHandle<SpeechRecognition> mRecognition;
  46   MozPromiseHolder<GenericNonExclusivePromise> mRemovedHolder;
  47
  48  public:
  49   const RefPtr<GenericNonExclusivePromise> mRemovedPromise;
  50 };
  51
  52 }  // namespace dom
  53 }  // namespace mozilla
  54
  55 #endif