ImageDecoderReadRequest.h (2078B)
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_ImageDecoderReadRequest_h 8 #define mozilla_dom_ImageDecoderReadRequest_h 9 10 #include "mozilla/dom/BindingDeclarations.h" 11 #include "mozilla/dom/ReadRequest.h" 12 13 namespace mozilla { 14 class MediaResult; 15 16 namespace image { 17 class SourceBuffer; 18 } 19 20 namespace dom { 21 class ImageDecoder; 22 class ReadableStream; 23 class ReadableStreamDefaultReader; 24 25 struct ImageDecoderReadRequest final : public ReadRequest { 26 public: 27 NS_DECL_ISUPPORTS_INHERITED 28 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageDecoderReadRequest, ReadRequest) 29 30 public: 31 explicit ImageDecoderReadRequest(image::SourceBuffer* aSourceBuffer); 32 33 bool Initialize(const GlobalObject& aGlobal, ImageDecoder* aDecoder, 34 ReadableStream& aStream); 35 void Destroy(bool aCancel); 36 37 MOZ_CAN_RUN_SCRIPT_BOUNDARY void ChunkSteps(JSContext* aCx, 38 JS::Handle<JS::Value> aChunk, 39 ErrorResult& aRv) override; 40 41 MOZ_CAN_RUN_SCRIPT_BOUNDARY void CloseSteps(JSContext* aCx, 42 ErrorResult& aRv) override; 43 44 MOZ_CAN_RUN_SCRIPT_BOUNDARY void ErrorSteps(JSContext* aCx, 45 JS::Handle<JS::Value> aError, 46 ErrorResult& aRv) override; 47 48 private: 49 ~ImageDecoderReadRequest() override; 50 51 void QueueRead(); 52 MOZ_CAN_RUN_SCRIPT_BOUNDARY void Read(); 53 MOZ_CAN_RUN_SCRIPT_BOUNDARY void Cancel(); 54 void Complete(const MediaResult& aResult); 55 56 RefPtr<ImageDecoder> mDecoder; 57 RefPtr<ReadableStreamDefaultReader> mReader; 58 RefPtr<image::SourceBuffer> mSourceBuffer; 59 }; 60 61 } // namespace dom 62 } // namespace mozilla 63 64 #endif // mozilla_dom_ImageDecoderReadRequest_h