ImageTrack.h - mozsearch

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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_ImageTrack_h

#define mozilla_dom_ImageTrack_h

#include "FrameTimeout.h"

#include "mozilla/Attributes.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/NotNull.h"

#include "mozilla/dom/ImageDecoderBinding.h"

#include "nsCycleCollectionParticipant.h"

#include "nsTArray.h"

#include "nsWrapperCache.h"

class nsIGlobalObject;

namespace mozilla {

namespace image {

struct DecodeFrameCountResult;

struct DecodeFramesResult;

}  // namespace image

namespace dom {

class ImageTrackList;

class VideoFrame;

class ImageTrack final : public nsISupports, public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ImageTrack)

 public:

  ImageTrack(ImageTrackList* aTrackList, int32_t aIndex, bool aSelected,

             bool aAnimated, uint32_t aFrameCount, bool aFrameCountComplete,

             float aRepetitionCount);

 protected:

  ~ImageTrack();

 public:

  nsIGlobalObject* GetParentObject() const { return mParent; }

  void Destroy();

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  int32_t Index() const { return mIndex; }

  bool Animated() const { return mAnimated; }

  uint32_t FrameCount() const { return mFrameCount; }

  bool FrameCountComplete() const { return mFrameCountComplete; }

  float RepetitionCount() const { return mRepetitionCount; }

  bool Selected() const { return mSelected; }

  void SetSelected(bool aSelected);

  void ClearSelected() { mSelected = false; }

  void MarkSelected() { mSelected = true; }

  size_t DecodedFrameCount() const { return mDecodedFrames.Length(); }

  bool DecodedFramesComplete() const { return mDecodedFramesComplete; }

  VideoFrame* GetDecodedFrame(uint32_t aIndex) const {

    if (mDecodedFrames.Length() <= aIndex) {

      return nullptr;

    return mDecodedFrames[aIndex];

  void OnFrameCountSuccess(const image::DecodeFrameCountResult& aResult);

  void OnDecodeFramesSuccess(const image::DecodeFramesResult& aResult);

 private:

  // ImageTrack can run on either main thread or worker thread.

  void AssertIsOnOwningThread() const { NS_ASSERT_OWNINGTHREAD(ImageTrack); }

  nsCOMPtr<nsIGlobalObject> mParent;

  RefPtr<ImageTrackList> mTrackList;

  AutoTArray<RefPtr<VideoFrame>, 1> mDecodedFrames;

  image::FrameTimeout mFramesTimestamp;

  int32_t mIndex = 0;

  float mRepetitionCount = 0.0f;

  uint32_t mFrameCount = 0;

  bool mFrameCountComplete = false;

  bool mDecodedFramesComplete = false;

  bool mAnimated = false;

  bool mSelected = false;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_ImageTrack_h