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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
#ifndef mozilla_dom_ImageTrackList_h
#define mozilla_dom_ImageTrackList_h
#include "mozilla/Attributes.h"
#include "mozilla/dom/ImageDecoderBinding.h"
#include "nsCycleCollectionParticipant.h"
#include "nsWrapperCache.h"
class nsIGlobalObject;
namespace mozilla {
class MediaResult;
namespace image {
struct DecodeFrameCountResult;
struct DecodeMetadataResult;
} // namespace image
namespace dom {
class ImageTrack;
class Promise;
class ImageTrackList final : public nsISupports, public nsWrapperCache {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ImageTrackList)
public:
ImageTrackList(nsIGlobalObject* aParent, ImageDecoder* aDecoder);
void Initialize(ErrorResult& aRv);
void MaybeRejectReady(const MediaResult& aResult);
void Destroy();
void OnMetadataSuccess(const image::DecodeMetadataResult& aMetadata);
void OnFrameCountSuccess(const image::DecodeFrameCountResult& aResult);
void SetSelectedIndex(int32_t aIndex, bool aSelected);
protected:
~ImageTrackList();
public:
nsIGlobalObject* GetParentObject() const { return mParent; }
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
Promise* Ready() const { return mReadyPromise; }
bool IsReady() const { return mIsReady; }
uint32_t Length() const { return mTracks.Length(); }
int32_t SelectedIndex() const { return mSelectedIndex; }
ImageTrack* GetSelectedTrack() const {
if (mSelectedIndex < 0) {
return nullptr;
}
return mTracks[mSelectedIndex];
}
ImageTrack* GetDefaultTrack() const {
if (mTracks.IsEmpty()) {
return nullptr;
}
return mTracks[0];
}
ImageTrack* IndexedGetter(uint32_t aIndex, bool& aFound) const {
if (aIndex >= mTracks.Length()) {
aFound = false;
return nullptr;
}
MOZ_ASSERT(mTracks[aIndex]);
aFound = true;
return mTracks[aIndex];
}
private:
// ImageTrackList can run on either main thread or worker thread.
void AssertIsOnOwningThread() const {
NS_ASSERT_OWNINGTHREAD(ImageTrackList);
}
nsCOMPtr<nsIGlobalObject> mParent;
RefPtr<ImageDecoder> mDecoder;
AutoTArray<RefPtr<ImageTrack>, 1> mTracks;
RefPtr<Promise> mReadyPromise;
int32_t mSelectedIndex = -1;
bool mIsReady = false;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_ImageTrackList_h