/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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/. */ #include "mozilla/dom/StructuredClone.h" #include "js/StructuredClone.h" #include "mozilla/dom/ImageData.h" #include "mozilla/dom/StructuredCloneTags.h" namespace mozilla { namespace dom { JSObject* ReadStructuredCloneImageData(JSContext* aCx, JSStructuredCloneReader* aReader) { // Read the information out of the stream. uint32_t width, height; JS::Rooted<JS::Value> dataArray(aCx); if (!JS_ReadUint32Pair(aReader, &width, &height) || !JS_ReadTypedArray(aReader, &dataArray)) { return nullptr; } MOZ_ASSERT(dataArray.isObject()); // Protect the result from a moving GC in ~nsRefPtr. JS::Rooted<JSObject*> result(aCx); { // Construct the ImageData. RefPtr<ImageData> imageData = new ImageData(width, height, dataArray.toObject()); // Wrap it in a JS::Value. if (!imageData->WrapObject(aCx, nullptr, &result)) { return nullptr; } } return result; } bool WriteStructuredCloneImageData(JSContext* aCx, JSStructuredCloneWriter* aWriter, ImageData* aImageData) { uint32_t width = aImageData->Width(); uint32_t height = aImageData->Height(); JS::Rooted<JSObject*> dataArray(aCx, aImageData->GetDataObject()); JSAutoCompartment ac(aCx, dataArray); JS::Rooted<JS::Value> arrayValue(aCx, JS::ObjectValue(*dataArray)); return JS_WriteUint32Pair(aWriter, SCTAG_DOM_IMAGEDATA, 0) && JS_WriteUint32Pair(aWriter, width, height) && JS_WriteTypedArray(aWriter, arrayValue); } } // namespace dom } // namespace mozilla