forked from mirrors/gecko-dev
edc56a360b
`HTMLMediaElement::MarkAsContentSource` [1] was added in Bug 1299718 to monitor the visibility / invisibility of various usage of video element. However, that telemetry had been removed in Bug 1356046. `MarkAsContentSource` is only used for logging currently. It's better to reword its name and related comments to bring the code in line with the current status. [1] https://searchfox.org/mozilla-central/rev/5b2d2863bd315f232a3f769f76e0eb16cdca7cb0/dom/html/HTMLMediaElement.h#799 Differential Revision: https://phabricator.services.mozilla.com/D150434
2172 lines
71 KiB
C++
2172 lines
71 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/ImageBitmap.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/dom/BlobImpl.h"
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#include "mozilla/dom/CanvasRenderingContext2D.h"
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#include "mozilla/dom/CanvasUtils.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/HTMLCanvasElement.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLMediaElementBinding.h"
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#include "mozilla/dom/HTMLVideoElement.h"
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#include "mozilla/dom/ImageBitmapBinding.h"
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#include "mozilla/dom/OffscreenCanvas.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/dom/StructuredCloneTags.h"
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#include "mozilla/dom/SVGImageElement.h"
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#include "mozilla/dom/WorkerPrivate.h"
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#include "mozilla/dom/WorkerRef.h"
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#include "mozilla/dom/WorkerRunnable.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Logging.h"
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#include "mozilla/gfx/Scale.h"
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#include "mozilla/gfx/Swizzle.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/ScopeExit.h"
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#include "nsGlobalWindowInner.h"
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#include "nsIAsyncInputStream.h"
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#include "nsNetUtil.h"
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#include "nsLayoutUtils.h"
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#include "nsStreamUtils.h"
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#include "imgLoader.h"
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#include "imgTools.h"
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using namespace mozilla::gfx;
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using namespace mozilla::layers;
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using mozilla::dom::HTMLMediaElement_Binding::HAVE_METADATA;
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using mozilla::dom::HTMLMediaElement_Binding::NETWORK_EMPTY;
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(ImageBitmap, mParent)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(ImageBitmap)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(ImageBitmap)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ImageBitmap)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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/* This class observes shutdown notifications and sends that notification
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* to the worker thread if the image bitmap is on a worker thread.
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*/
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class ImageBitmapShutdownObserver final : public nsIObserver {
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public:
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explicit ImageBitmapShutdownObserver(ImageBitmap* aImageBitmap)
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: mImageBitmap(nullptr) {
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if (NS_IsMainThread()) {
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mImageBitmap = aImageBitmap;
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} else {
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WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
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MOZ_ASSERT(workerPrivate);
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mMainThreadEventTarget = workerPrivate->MainThreadEventTarget();
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mSendToWorkerTask = new SendShutdownToWorkerThread(aImageBitmap);
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}
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}
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void RegisterObserver() {
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if (NS_IsMainThread()) {
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nsContentUtils::RegisterShutdownObserver(this);
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return;
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}
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MOZ_ASSERT(mMainThreadEventTarget);
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RefPtr<ImageBitmapShutdownObserver> self = this;
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nsCOMPtr<nsIRunnable> r =
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NS_NewRunnableFunction("ImageBitmapShutdownObserver::RegisterObserver",
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[self]() { self->RegisterObserver(); });
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mMainThreadEventTarget->Dispatch(r.forget());
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}
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void UnregisterObserver() {
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if (NS_IsMainThread()) {
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nsContentUtils::UnregisterShutdownObserver(this);
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return;
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}
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MOZ_ASSERT(mMainThreadEventTarget);
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RefPtr<ImageBitmapShutdownObserver> self = this;
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nsCOMPtr<nsIRunnable> r =
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NS_NewRunnableFunction("ImageBitmapShutdownObserver::RegisterObserver",
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[self]() { self->UnregisterObserver(); });
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mMainThreadEventTarget->Dispatch(r.forget());
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}
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void Clear() {
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mImageBitmap = nullptr;
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if (mSendToWorkerTask) {
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mSendToWorkerTask->mImageBitmap = nullptr;
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}
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}
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIOBSERVER
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private:
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~ImageBitmapShutdownObserver() = default;
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class SendShutdownToWorkerThread : public MainThreadWorkerControlRunnable {
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public:
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explicit SendShutdownToWorkerThread(ImageBitmap* aImageBitmap)
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: MainThreadWorkerControlRunnable(GetCurrentThreadWorkerPrivate()),
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mImageBitmap(aImageBitmap) {}
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bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
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if (mImageBitmap) {
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mImageBitmap->OnShutdown();
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mImageBitmap = nullptr;
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}
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return true;
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}
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ImageBitmap* mImageBitmap;
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};
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ImageBitmap* mImageBitmap;
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nsCOMPtr<nsIEventTarget> mMainThreadEventTarget;
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RefPtr<SendShutdownToWorkerThread> mSendToWorkerTask;
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};
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NS_IMPL_ISUPPORTS(ImageBitmapShutdownObserver, nsIObserver)
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NS_IMETHODIMP
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ImageBitmapShutdownObserver::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
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if (mSendToWorkerTask) {
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mSendToWorkerTask->Dispatch();
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} else {
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if (mImageBitmap) {
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mImageBitmap->OnShutdown();
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mImageBitmap = nullptr;
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}
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}
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nsContentUtils::UnregisterShutdownObserver(this);
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}
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return NS_OK;
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}
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/*
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* If either aRect.width or aRect.height are negative, then return a new IntRect
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* which represents the same rectangle as the aRect does but with positive width
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* and height.
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*/
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static IntRect FixUpNegativeDimension(const IntRect& aRect, ErrorResult& aRv) {
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gfx::IntRect rect = aRect;
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// fix up negative dimensions
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if (rect.width < 0) {
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CheckedInt32 checkedX = CheckedInt32(rect.x) + rect.width;
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if (!checkedX.isValid()) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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return rect;
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}
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rect.x = checkedX.value();
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rect.width = -(rect.width);
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}
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if (rect.height < 0) {
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CheckedInt32 checkedY = CheckedInt32(rect.y) + rect.height;
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if (!checkedY.isValid()) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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return rect;
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}
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rect.y = checkedY.value();
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rect.height = -(rect.height);
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}
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return rect;
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}
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/*
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* This helper function copies the data of the given DataSourceSurface,
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* _aSurface_, in the given area, _aCropRect_, into a new DataSourceSurface.
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* This might return null if it can not create a new SourceSurface or it cannot
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* read data from the given _aSurface_.
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*
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* Warning: Even though the area of _aCropRect_ is just the same as the size of
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* _aSurface_, this function still copy data into a new
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* DataSourceSurface.
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*/
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static already_AddRefed<DataSourceSurface> CropAndCopyDataSourceSurface(
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DataSourceSurface* aSurface, const IntRect& aCropRect) {
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MOZ_ASSERT(aSurface);
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// Check the aCropRect
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ErrorResult error;
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const IntRect positiveCropRect = FixUpNegativeDimension(aCropRect, error);
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if (NS_WARN_IF(error.Failed())) {
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error.SuppressException();
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return nullptr;
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}
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// Calculate the size of the new SourceSurface.
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// We cannot keep using aSurface->GetFormat() to create new DataSourceSurface,
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// since it might be SurfaceFormat::B8G8R8X8 which does not handle opacity,
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// however the specification explicitly define that "If any of the pixels on
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// this rectangle are outside the area where the input bitmap was placed, then
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// they will be transparent black in output."
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// So, instead, we force the output format to be SurfaceFormat::B8G8R8A8.
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const SurfaceFormat format = SurfaceFormat::B8G8R8A8;
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const int bytesPerPixel = BytesPerPixel(format);
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const IntSize dstSize =
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IntSize(positiveCropRect.width, positiveCropRect.height);
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const uint32_t dstStride = dstSize.width * bytesPerPixel;
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// Create a new SourceSurface.
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RefPtr<DataSourceSurface> dstDataSurface =
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Factory::CreateDataSourceSurfaceWithStride(dstSize, format, dstStride,
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true);
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if (NS_WARN_IF(!dstDataSurface)) {
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return nullptr;
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}
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// Only do copying and cropping when the positiveCropRect intersects with
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// the size of aSurface.
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const IntRect surfRect(IntPoint(0, 0), aSurface->GetSize());
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if (surfRect.Intersects(positiveCropRect)) {
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const IntRect surfPortion = surfRect.Intersect(positiveCropRect);
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const IntPoint dest(std::max(0, surfPortion.X() - positiveCropRect.X()),
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std::max(0, surfPortion.Y() - positiveCropRect.Y()));
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// Copy the raw data into the newly created DataSourceSurface.
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DataSourceSurface::ScopedMap srcMap(aSurface, DataSourceSurface::READ);
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DataSourceSurface::ScopedMap dstMap(dstDataSurface,
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DataSourceSurface::WRITE);
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if (NS_WARN_IF(!srcMap.IsMapped()) || NS_WARN_IF(!dstMap.IsMapped())) {
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return nullptr;
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}
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uint8_t* srcBufferPtr = srcMap.GetData() +
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surfPortion.y * srcMap.GetStride() +
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surfPortion.x * bytesPerPixel;
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uint8_t* dstBufferPtr =
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dstMap.GetData() + dest.y * dstMap.GetStride() + dest.x * bytesPerPixel;
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CheckedInt<uint32_t> copiedBytesPerRaw =
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CheckedInt<uint32_t>(surfPortion.width) * bytesPerPixel;
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if (!copiedBytesPerRaw.isValid()) {
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return nullptr;
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}
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for (int i = 0; i < surfPortion.height; ++i) {
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memcpy(dstBufferPtr, srcBufferPtr, copiedBytesPerRaw.value());
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srcBufferPtr += srcMap.GetStride();
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dstBufferPtr += dstMap.GetStride();
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}
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}
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return dstDataSurface.forget();
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}
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/*
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* This helper function scales the data of the given DataSourceSurface,
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* _aSurface_, in the given area, _aCropRect_, into a new DataSourceSurface.
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* This might return null if it can not create a new SourceSurface or it cannot
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* read data from the given _aSurface_.
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*
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*/
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static already_AddRefed<DataSourceSurface> ScaleDataSourceSurface(
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DataSourceSurface* aSurface, const ImageBitmapOptions& aOptions) {
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MOZ_ASSERT(aSurface);
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const SurfaceFormat format = aSurface->GetFormat();
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const int bytesPerPixel = BytesPerPixel(format);
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const IntSize srcSize = aSurface->GetSize();
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int32_t tmp;
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CheckedInt<int32_t> checked;
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CheckedInt<int32_t> dstWidth(
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aOptions.mResizeWidth.WasPassed() ? aOptions.mResizeWidth.Value() : 0);
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CheckedInt<int32_t> dstHeight(
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aOptions.mResizeHeight.WasPassed() ? aOptions.mResizeHeight.Value() : 0);
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if (!dstWidth.isValid() || !dstHeight.isValid()) {
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return nullptr;
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}
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if (!dstWidth.value()) {
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checked = srcSize.width * dstHeight;
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if (!checked.isValid()) {
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return nullptr;
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}
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tmp = ceil(checked.value() / double(srcSize.height));
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dstWidth = tmp;
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} else if (!dstHeight.value()) {
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checked = srcSize.height * dstWidth;
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if (!checked.isValid()) {
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return nullptr;
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}
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tmp = ceil(checked.value() / double(srcSize.width));
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dstHeight = tmp;
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}
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const IntSize dstSize(dstWidth.value(), dstHeight.value());
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const int32_t dstStride = dstSize.width * bytesPerPixel;
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// Create a new SourceSurface.
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RefPtr<DataSourceSurface> dstDataSurface =
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Factory::CreateDataSourceSurfaceWithStride(dstSize, format, dstStride,
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true);
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if (NS_WARN_IF(!dstDataSurface)) {
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return nullptr;
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}
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// Copy the raw data into the newly created DataSourceSurface.
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DataSourceSurface::ScopedMap srcMap(aSurface, DataSourceSurface::READ);
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DataSourceSurface::ScopedMap dstMap(dstDataSurface, DataSourceSurface::WRITE);
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if (NS_WARN_IF(!srcMap.IsMapped()) || NS_WARN_IF(!dstMap.IsMapped())) {
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return nullptr;
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}
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uint8_t* srcBufferPtr = srcMap.GetData();
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uint8_t* dstBufferPtr = dstMap.GetData();
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bool res = Scale(srcBufferPtr, srcSize.width, srcSize.height,
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srcMap.GetStride(), dstBufferPtr, dstSize.width,
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dstSize.height, dstMap.GetStride(), aSurface->GetFormat());
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if (!res) {
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return nullptr;
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}
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return dstDataSurface.forget();
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}
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static DataSourceSurface* FlipYDataSourceSurface(DataSourceSurface* aSurface) {
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MOZ_ASSERT(aSurface);
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// Invert in y direction.
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DataSourceSurface::ScopedMap srcMap(aSurface, DataSourceSurface::READ_WRITE);
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if (NS_WARN_IF(!srcMap.IsMapped())) {
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return nullptr;
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}
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const IntSize srcSize = aSurface->GetSize();
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uint8_t* srcBufferPtr = srcMap.GetData();
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const uint32_t stride = srcMap.GetStride();
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CheckedInt<uint32_t> copiedBytesPerRaw = CheckedInt<uint32_t>(stride);
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if (!copiedBytesPerRaw.isValid()) {
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return nullptr;
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}
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for (int i = 0; i < srcSize.height / 2; ++i) {
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std::swap_ranges(srcBufferPtr + stride * i, srcBufferPtr + stride * (i + 1),
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srcBufferPtr + stride * (srcSize.height - 1 - i));
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}
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return aSurface;
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}
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static DataSourceSurface* AlphaPremultiplyDataSourceSurface(
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DataSourceSurface* aSurface, const bool forward = true) {
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MOZ_ASSERT(aSurface);
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DataSourceSurface::MappedSurface surfaceMap;
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if (aSurface->Map(DataSourceSurface::MapType::READ_WRITE, &surfaceMap)) {
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if (forward) {
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PremultiplyData(surfaceMap.mData, surfaceMap.mStride,
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aSurface->GetFormat(), surfaceMap.mData,
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surfaceMap.mStride, aSurface->GetFormat(),
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aSurface->GetSize());
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} else {
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UnpremultiplyData(surfaceMap.mData, surfaceMap.mStride,
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aSurface->GetFormat(), surfaceMap.mData,
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surfaceMap.mStride, aSurface->GetFormat(),
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aSurface->GetSize());
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}
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aSurface->Unmap();
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} else {
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return nullptr;
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}
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return aSurface;
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}
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/*
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* Encapsulate the given _aSurface_ into a layers::SourceSurfaceImage.
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*/
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static already_AddRefed<layers::Image> CreateImageFromSurface(
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SourceSurface* aSurface) {
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MOZ_ASSERT(aSurface);
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RefPtr<layers::SourceSurfaceImage> image =
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new layers::SourceSurfaceImage(aSurface->GetSize(), aSurface);
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return image.forget();
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}
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/*
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* CreateImageFromRawData(), CreateSurfaceFromRawData() and
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* CreateImageFromRawDataInMainThreadSyncTask are helpers for
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* create-from-ImageData case
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*/
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static already_AddRefed<SourceSurface> CreateSurfaceFromRawData(
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const gfx::IntSize& aSize, uint32_t aStride, gfx::SurfaceFormat aFormat,
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uint8_t* aBuffer, uint32_t aBufferLength, const Maybe<IntRect>& aCropRect,
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const ImageBitmapOptions& aOptions) {
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MOZ_ASSERT(!aSize.IsEmpty());
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MOZ_ASSERT(aBuffer);
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// Wrap the source buffer into a SourceSurface.
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RefPtr<DataSourceSurface> dataSurface =
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Factory::CreateWrappingDataSourceSurface(aBuffer, aStride, aSize,
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aFormat);
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if (NS_WARN_IF(!dataSurface)) {
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return nullptr;
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}
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// The temporary cropRect variable is equal to the size of source buffer if we
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// do not need to crop, or it equals to the given cropping size.
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const IntRect cropRect =
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aCropRect.valueOr(IntRect(0, 0, aSize.width, aSize.height));
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// Copy the source buffer in the _cropRect_ area into a new SourceSurface.
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RefPtr<DataSourceSurface> result =
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CropAndCopyDataSourceSurface(dataSurface, cropRect);
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if (NS_WARN_IF(!result)) {
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return nullptr;
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}
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if (aOptions.mImageOrientation == ImageOrientation::FlipY) {
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result = FlipYDataSourceSurface(result);
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if (NS_WARN_IF(!result)) {
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return nullptr;
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}
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}
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if (aOptions.mPremultiplyAlpha == PremultiplyAlpha::Premultiply) {
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result = AlphaPremultiplyDataSourceSurface(result);
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if (NS_WARN_IF(!result)) {
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return nullptr;
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}
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}
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if (aOptions.mResizeWidth.WasPassed() || aOptions.mResizeHeight.WasPassed()) {
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dataSurface = result->GetDataSurface();
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result = ScaleDataSourceSurface(dataSurface, aOptions);
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if (NS_WARN_IF(!result)) {
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return nullptr;
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}
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}
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return result.forget();
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}
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static already_AddRefed<layers::Image> CreateImageFromRawData(
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const gfx::IntSize& aSize, uint32_t aStride, gfx::SurfaceFormat aFormat,
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uint8_t* aBuffer, uint32_t aBufferLength, const Maybe<IntRect>& aCropRect,
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const ImageBitmapOptions& aOptions) {
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MOZ_ASSERT(NS_IsMainThread());
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// Copy and crop the source buffer into a SourceSurface.
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RefPtr<SourceSurface> rgbaSurface = CreateSurfaceFromRawData(
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aSize, aStride, aFormat, aBuffer, aBufferLength, aCropRect, aOptions);
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if (NS_WARN_IF(!rgbaSurface)) {
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return nullptr;
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}
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// Convert RGBA to BGRA
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RefPtr<DataSourceSurface> rgbaDataSurface = rgbaSurface->GetDataSurface();
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|
DataSourceSurface::ScopedMap rgbaMap(rgbaDataSurface,
|
|
DataSourceSurface::READ);
|
|
if (NS_WARN_IF(!rgbaMap.IsMapped())) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<DataSourceSurface> bgraDataSurface =
|
|
Factory::CreateDataSourceSurfaceWithStride(rgbaDataSurface->GetSize(),
|
|
SurfaceFormat::B8G8R8A8,
|
|
rgbaMap.GetStride());
|
|
if (NS_WARN_IF(!bgraDataSurface)) {
|
|
return nullptr;
|
|
}
|
|
|
|
DataSourceSurface::ScopedMap bgraMap(bgraDataSurface,
|
|
DataSourceSurface::WRITE);
|
|
if (NS_WARN_IF(!bgraMap.IsMapped())) {
|
|
return nullptr;
|
|
}
|
|
|
|
SwizzleData(rgbaMap.GetData(), rgbaMap.GetStride(), SurfaceFormat::R8G8B8A8,
|
|
bgraMap.GetData(), bgraMap.GetStride(), SurfaceFormat::B8G8R8A8,
|
|
bgraDataSurface->GetSize());
|
|
|
|
// Create an Image from the BGRA SourceSurface.
|
|
return CreateImageFromSurface(bgraDataSurface);
|
|
}
|
|
|
|
/*
|
|
* This is a synchronous task.
|
|
* This class is used to create a layers::SourceSurfaceImage from raw data in
|
|
* the main thread. While creating an ImageBitmap from an ImageData, we need to
|
|
* create a SouceSurface from the ImageData's raw data and then set the
|
|
* SourceSurface into a layers::SourceSurfaceImage. However, the
|
|
* layers::SourceSurfaceImage asserts the setting operation in the main thread,
|
|
* so if we are going to create an ImageBitmap from an ImageData off the main
|
|
* thread, we post an event to the main thread to create a
|
|
* layers::SourceSurfaceImage from an ImageData's raw data.
|
|
*/
|
|
class CreateImageFromRawDataInMainThreadSyncTask final
|
|
: public WorkerMainThreadRunnable {
|
|
public:
|
|
CreateImageFromRawDataInMainThreadSyncTask(
|
|
uint8_t* aBuffer, uint32_t aBufferLength, uint32_t aStride,
|
|
gfx::SurfaceFormat aFormat, const gfx::IntSize& aSize,
|
|
const Maybe<IntRect>& aCropRect, layers::Image** aImage,
|
|
const ImageBitmapOptions& aOptions)
|
|
: WorkerMainThreadRunnable(
|
|
GetCurrentThreadWorkerPrivate(),
|
|
"ImageBitmap :: Create Image from Raw Data"_ns),
|
|
mImage(aImage),
|
|
mBuffer(aBuffer),
|
|
mBufferLength(aBufferLength),
|
|
mStride(aStride),
|
|
mFormat(aFormat),
|
|
mSize(aSize),
|
|
mCropRect(aCropRect),
|
|
mOptions(aOptions) {
|
|
MOZ_ASSERT(!(*aImage),
|
|
"Don't pass an existing Image into "
|
|
"CreateImageFromRawDataInMainThreadSyncTask.");
|
|
}
|
|
|
|
bool MainThreadRun() override {
|
|
RefPtr<layers::Image> image = CreateImageFromRawData(
|
|
mSize, mStride, mFormat, mBuffer, mBufferLength, mCropRect, mOptions);
|
|
|
|
if (NS_WARN_IF(!image)) {
|
|
return false;
|
|
}
|
|
|
|
image.forget(mImage);
|
|
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
layers::Image** mImage;
|
|
uint8_t* mBuffer;
|
|
uint32_t mBufferLength;
|
|
uint32_t mStride;
|
|
gfx::SurfaceFormat mFormat;
|
|
gfx::IntSize mSize;
|
|
const Maybe<IntRect>& mCropRect;
|
|
const ImageBitmapOptions mOptions;
|
|
};
|
|
|
|
/*
|
|
* A wrapper to the nsLayoutUtils::SurfaceFromElement() function followed by the
|
|
* security checking.
|
|
*/
|
|
template <class ElementType>
|
|
static already_AddRefed<SourceSurface> GetSurfaceFromElement(
|
|
nsIGlobalObject* aGlobal, ElementType& aElement, bool* aWriteOnly,
|
|
const ImageBitmapOptions& aOptions, gfxAlphaType* aAlphaType,
|
|
ErrorResult& aRv) {
|
|
uint32_t flags = nsLayoutUtils::SFE_WANT_FIRST_FRAME_IF_IMAGE;
|
|
|
|
// by default surfaces have premultiplied alpha
|
|
// attempt to get non premultiplied if required
|
|
if (aOptions.mPremultiplyAlpha == PremultiplyAlpha::None) {
|
|
flags |= nsLayoutUtils::SFE_ALLOW_NON_PREMULT;
|
|
}
|
|
|
|
if (aOptions.mColorSpaceConversion == ColorSpaceConversion::None &&
|
|
aElement.IsHTMLElement(nsGkAtoms::img)) {
|
|
flags |= nsLayoutUtils::SFE_NO_COLORSPACE_CONVERSION;
|
|
}
|
|
|
|
Maybe<int32_t> resizeWidth, resizeHeight;
|
|
if (aOptions.mResizeWidth.WasPassed()) {
|
|
if (!CheckedInt32(aOptions.mResizeWidth.Value()).isValid()) {
|
|
aRv.ThrowInvalidStateError("resizeWidth is too large");
|
|
return nullptr;
|
|
}
|
|
resizeWidth.emplace(aOptions.mResizeWidth.Value());
|
|
}
|
|
if (aOptions.mResizeHeight.WasPassed()) {
|
|
if (!CheckedInt32(aOptions.mResizeHeight.Value()).isValid()) {
|
|
aRv.ThrowInvalidStateError("resizeHeight is too large");
|
|
return nullptr;
|
|
}
|
|
resizeHeight.emplace(aOptions.mResizeHeight.Value());
|
|
}
|
|
SurfaceFromElementResult res = nsLayoutUtils::SurfaceFromElement(
|
|
&aElement, resizeWidth, resizeHeight, flags);
|
|
|
|
RefPtr<SourceSurface> surface = res.GetSourceSurface();
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
*aWriteOnly = res.mIsWriteOnly;
|
|
*aAlphaType = res.mAlphaType;
|
|
|
|
return surface.forget();
|
|
}
|
|
|
|
ImageBitmap::ImageBitmap(nsIGlobalObject* aGlobal, layers::Image* aData,
|
|
bool aWriteOnly, gfxAlphaType aAlphaType)
|
|
: mParent(aGlobal),
|
|
mData(aData),
|
|
mSurface(nullptr),
|
|
mPictureRect(aData->GetPictureRect()),
|
|
mAlphaType(aAlphaType),
|
|
mAllocatedImageData(false),
|
|
mWriteOnly(aWriteOnly) {
|
|
MOZ_ASSERT(aData, "aData is null in ImageBitmap constructor.");
|
|
|
|
mShutdownObserver = new ImageBitmapShutdownObserver(this);
|
|
mShutdownObserver->RegisterObserver();
|
|
}
|
|
|
|
ImageBitmap::~ImageBitmap() {
|
|
if (mShutdownObserver) {
|
|
mShutdownObserver->Clear();
|
|
mShutdownObserver->UnregisterObserver();
|
|
mShutdownObserver = nullptr;
|
|
}
|
|
}
|
|
|
|
JSObject* ImageBitmap::WrapObject(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) {
|
|
return ImageBitmap_Binding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
void ImageBitmap::Close() {
|
|
mData = nullptr;
|
|
mSurface = nullptr;
|
|
mPictureRect.SetEmpty();
|
|
}
|
|
|
|
void ImageBitmap::OnShutdown() {
|
|
mShutdownObserver = nullptr;
|
|
|
|
Close();
|
|
}
|
|
|
|
void ImageBitmap::SetPictureRect(const IntRect& aRect, ErrorResult& aRv) {
|
|
mPictureRect = FixUpNegativeDimension(aRect, aRv);
|
|
}
|
|
|
|
/*
|
|
* The functionality of PrepareForDrawTarget method:
|
|
* (1) Get a SourceSurface from the mData (which is a layers::Image).
|
|
* (2) Convert the SourceSurface to format B8G8R8A8 if the original format is
|
|
* R8G8B8, B8G8R8, HSV or Lab.
|
|
* Note: if the original format is A8 or Depth, then return null directly.
|
|
* (3) Do cropping if the size of SourceSurface does not equal to the
|
|
* mPictureRect.
|
|
* (4) Pre-multiply alpha if needed.
|
|
*/
|
|
already_AddRefed<SourceSurface> ImageBitmap::PrepareForDrawTarget(
|
|
gfx::DrawTarget* aTarget) {
|
|
MOZ_ASSERT(aTarget);
|
|
|
|
if (!mData) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!mSurface) {
|
|
mSurface = mData->GetAsSourceSurface();
|
|
|
|
if (!mSurface) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
IntRect surfRect(0, 0, mSurface->GetSize().width, mSurface->GetSize().height);
|
|
|
|
// Check if we still need to crop our surface
|
|
if (!mPictureRect.IsEqualEdges(surfRect)) {
|
|
IntRect surfPortion = surfRect.Intersect(mPictureRect);
|
|
|
|
// the crop lies entirely outside the surface area, nothing to draw
|
|
if (surfPortion.IsEmpty()) {
|
|
mSurface = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
IntPoint dest(std::max(0, surfPortion.X() - mPictureRect.X()),
|
|
std::max(0, surfPortion.Y() - mPictureRect.Y()));
|
|
|
|
// We must initialize this target with mPictureRect.Size() because the
|
|
// specification states that if the cropping area is given, then return an
|
|
// ImageBitmap with the size equals to the cropping area. Ensure that the
|
|
// format matches the surface, even though the DT type is similar to the
|
|
// destination, i.e. blending an alpha surface to an opaque DT. However,
|
|
// any pixels outside the surface portion must be filled with transparent
|
|
// black, even if the surface is opaque, so force to an alpha format in
|
|
// that case.
|
|
SurfaceFormat format = mSurface->GetFormat();
|
|
if (!surfPortion.IsEqualEdges(mPictureRect) && IsOpaque(format)) {
|
|
format = SurfaceFormat::B8G8R8A8;
|
|
}
|
|
RefPtr<DrawTarget> cropped =
|
|
aTarget->CreateSimilarDrawTarget(mPictureRect.Size(), format);
|
|
if (!cropped) {
|
|
mSurface = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
cropped->CopySurface(mSurface, surfPortion, dest);
|
|
mSurface = cropped->Snapshot();
|
|
if (!mSurface) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Make mCropRect match new surface we've cropped to
|
|
mPictureRect.MoveTo(0, 0);
|
|
}
|
|
|
|
// Pre-multiply alpha here.
|
|
// Ignore this step if the source surface does not have alpha channel; this
|
|
// kind of source surfaces might come form layers::PlanarYCbCrImage.
|
|
if (mAlphaType == gfxAlphaType::NonPremult &&
|
|
!IsOpaque(mSurface->GetFormat())) {
|
|
MOZ_ASSERT(mSurface->GetFormat() == SurfaceFormat::R8G8B8A8 ||
|
|
mSurface->GetFormat() == SurfaceFormat::B8G8R8A8 ||
|
|
mSurface->GetFormat() == SurfaceFormat::A8R8G8B8);
|
|
|
|
RefPtr<DataSourceSurface> srcSurface = mSurface->GetDataSurface();
|
|
if (NS_WARN_IF(!srcSurface)) {
|
|
return nullptr;
|
|
}
|
|
RefPtr<DataSourceSurface> dstSurface = Factory::CreateDataSourceSurface(
|
|
srcSurface->GetSize(), srcSurface->GetFormat());
|
|
if (NS_WARN_IF(!dstSurface)) {
|
|
return nullptr;
|
|
}
|
|
|
|
DataSourceSurface::ScopedMap srcMap(srcSurface, DataSourceSurface::READ);
|
|
if (!srcMap.IsMapped()) {
|
|
gfxCriticalError()
|
|
<< "Failed to map source surface for premultiplying alpha.";
|
|
return nullptr;
|
|
}
|
|
|
|
DataSourceSurface::ScopedMap dstMap(dstSurface, DataSourceSurface::WRITE);
|
|
if (!dstMap.IsMapped()) {
|
|
gfxCriticalError()
|
|
<< "Failed to map destination surface for premultiplying alpha.";
|
|
return nullptr;
|
|
}
|
|
|
|
PremultiplyData(srcMap.GetData(), srcMap.GetStride(), mSurface->GetFormat(),
|
|
dstMap.GetData(), dstMap.GetStride(), mSurface->GetFormat(),
|
|
dstSurface->GetSize());
|
|
|
|
mAlphaType = gfxAlphaType::Premult;
|
|
mSurface = dstSurface;
|
|
}
|
|
|
|
// Replace our surface with one optimized for the target we're about to draw
|
|
// to, under the assumption it'll likely be drawn again to that target.
|
|
// This call should be a no-op for already-optimized surfaces
|
|
mSurface = aTarget->OptimizeSourceSurface(mSurface);
|
|
return do_AddRef(mSurface);
|
|
}
|
|
|
|
already_AddRefed<layers::Image> ImageBitmap::TransferAsImage() {
|
|
RefPtr<layers::Image> image = mData;
|
|
Close();
|
|
return image.forget();
|
|
}
|
|
|
|
UniquePtr<ImageBitmapCloneData> ImageBitmap::ToCloneData() const {
|
|
if (!mData) {
|
|
// A closed image cannot be cloned.
|
|
return nullptr;
|
|
}
|
|
|
|
UniquePtr<ImageBitmapCloneData> result(new ImageBitmapCloneData());
|
|
result->mPictureRect = mPictureRect;
|
|
result->mAlphaType = mAlphaType;
|
|
RefPtr<SourceSurface> surface = mData->GetAsSourceSurface();
|
|
if (!surface) {
|
|
// It might just not be possible to get/map the surface. (e.g. from another
|
|
// process)
|
|
return nullptr;
|
|
}
|
|
|
|
result->mSurface = surface->GetDataSurface();
|
|
MOZ_ASSERT(result->mSurface);
|
|
result->mWriteOnly = mWriteOnly;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateFromSourceSurface(
|
|
nsIGlobalObject* aGlobal, gfx::SourceSurface* aSource, ErrorResult& aRv) {
|
|
RefPtr<layers::Image> data = CreateImageFromSurface(aSource);
|
|
RefPtr<ImageBitmap> ret =
|
|
new ImageBitmap(aGlobal, data, false /* writeOnly */);
|
|
ret->mAllocatedImageData = true;
|
|
return ret.forget();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateFromCloneData(
|
|
nsIGlobalObject* aGlobal, ImageBitmapCloneData* aData) {
|
|
RefPtr<layers::Image> data = CreateImageFromSurface(aData->mSurface);
|
|
|
|
RefPtr<ImageBitmap> ret =
|
|
new ImageBitmap(aGlobal, data, aData->mWriteOnly, aData->mAlphaType);
|
|
|
|
ret->mAllocatedImageData = true;
|
|
|
|
ErrorResult rv;
|
|
ret->SetPictureRect(aData->mPictureRect, rv);
|
|
return ret.forget();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateFromOffscreenCanvas(
|
|
nsIGlobalObject* aGlobal, OffscreenCanvas& aOffscreenCanvas,
|
|
ErrorResult& aRv) {
|
|
// Check write-only mode.
|
|
bool writeOnly = aOffscreenCanvas.IsWriteOnly();
|
|
|
|
SurfaceFromElementResult res = nsLayoutUtils::SurfaceFromOffscreenCanvas(
|
|
&aOffscreenCanvas, nsLayoutUtils::SFE_WANT_FIRST_FRAME_IF_IMAGE);
|
|
|
|
RefPtr<SourceSurface> surface = res.GetSourceSurface();
|
|
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<layers::Image> data = CreateImageFromSurface(surface);
|
|
|
|
RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
|
|
|
|
ret->mAllocatedImageData = true;
|
|
|
|
return ret.forget();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateImageBitmapInternal(
|
|
nsIGlobalObject* aGlobal, gfx::SourceSurface* aSurface,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
const bool aWriteOnly, const bool aAllocatedImageData, const bool aMustCopy,
|
|
const gfxAlphaType aAlphaType, ErrorResult& aRv) {
|
|
bool needToReportMemoryAllocation = aAllocatedImageData;
|
|
const IntSize srcSize = aSurface->GetSize();
|
|
IntRect cropRect =
|
|
aCropRect.valueOr(IntRect(0, 0, srcSize.width, srcSize.height));
|
|
|
|
RefPtr<SourceSurface> surface = aSurface;
|
|
RefPtr<DataSourceSurface> dataSurface;
|
|
|
|
// handle alpha premultiplication if surface not of correct type
|
|
|
|
gfxAlphaType alphaType = aAlphaType;
|
|
bool mustCopy = aMustCopy;
|
|
bool requiresPremultiply = false;
|
|
bool requiresUnpremultiply = false;
|
|
|
|
if (!IsOpaque(surface->GetFormat())) {
|
|
if (aAlphaType == gfxAlphaType::Premult &&
|
|
aOptions.mPremultiplyAlpha == PremultiplyAlpha::None) {
|
|
requiresUnpremultiply = true;
|
|
alphaType = gfxAlphaType::NonPremult;
|
|
if (!aAllocatedImageData) {
|
|
mustCopy = true;
|
|
}
|
|
} else if (aAlphaType == gfxAlphaType::NonPremult &&
|
|
aOptions.mPremultiplyAlpha == PremultiplyAlpha::Premultiply) {
|
|
requiresPremultiply = true;
|
|
alphaType = gfxAlphaType::Premult;
|
|
if (!aAllocatedImageData) {
|
|
mustCopy = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* if we don't own the data and need to create a new buffer to flip Y.
|
|
* or
|
|
* we need to crop and flip, where crop must come first.
|
|
* or
|
|
* Or the caller demands a copy (WebGL contexts).
|
|
*/
|
|
if ((aOptions.mImageOrientation == ImageOrientation::FlipY &&
|
|
(!aAllocatedImageData || aCropRect.isSome())) ||
|
|
mustCopy) {
|
|
dataSurface = surface->GetDataSurface();
|
|
|
|
dataSurface = CropAndCopyDataSourceSurface(dataSurface, cropRect);
|
|
if (NS_WARN_IF(!dataSurface)) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
surface = dataSurface;
|
|
cropRect.SetRect(0, 0, dataSurface->GetSize().width,
|
|
dataSurface->GetSize().height);
|
|
needToReportMemoryAllocation = true;
|
|
}
|
|
|
|
// flip image in Y direction
|
|
if (aOptions.mImageOrientation == ImageOrientation::FlipY) {
|
|
if (!dataSurface) {
|
|
dataSurface = surface->GetDataSurface();
|
|
}
|
|
|
|
surface = FlipYDataSourceSurface(dataSurface);
|
|
if (NS_WARN_IF(!surface)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (requiresPremultiply) {
|
|
if (!dataSurface) {
|
|
dataSurface = surface->GetDataSurface();
|
|
}
|
|
|
|
surface = AlphaPremultiplyDataSourceSurface(dataSurface, true);
|
|
if (NS_WARN_IF(!surface)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// resize if required
|
|
if (aOptions.mResizeWidth.WasPassed() || aOptions.mResizeHeight.WasPassed()) {
|
|
if (!dataSurface) {
|
|
dataSurface = surface->GetDataSurface();
|
|
};
|
|
|
|
surface = ScaleDataSourceSurface(dataSurface, aOptions);
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.ThrowInvalidStateError("Failed to create resized image");
|
|
return nullptr;
|
|
}
|
|
|
|
needToReportMemoryAllocation = true;
|
|
cropRect.SetRect(0, 0, surface->GetSize().width, surface->GetSize().height);
|
|
}
|
|
|
|
if (requiresUnpremultiply) {
|
|
if (!dataSurface) {
|
|
dataSurface = surface->GetDataSurface();
|
|
}
|
|
|
|
surface = AlphaPremultiplyDataSourceSurface(dataSurface, false);
|
|
if (NS_WARN_IF(!surface)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
// Create an Image from the SourceSurface.
|
|
RefPtr<layers::Image> data = CreateImageFromSurface(surface);
|
|
RefPtr<ImageBitmap> ret =
|
|
new ImageBitmap(aGlobal, data, aWriteOnly, alphaType);
|
|
|
|
if (needToReportMemoryAllocation) {
|
|
ret->mAllocatedImageData = true;
|
|
}
|
|
|
|
// Set the picture rectangle.
|
|
ret->SetPictureRect(cropRect, aRv);
|
|
|
|
return ret.forget();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, HTMLImageElement& aImageEl,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
// Check if the image element is completely available or not.
|
|
if (!aImageEl.Complete()) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
bool writeOnly = true;
|
|
gfxAlphaType alphaType = gfxAlphaType::NonPremult;
|
|
|
|
// Get the SourceSurface out from the image element and then do security
|
|
// checking.
|
|
RefPtr<SourceSurface> surface = GetSurfaceFromElement(
|
|
aGlobal, aImageEl, &writeOnly, aOptions, &alphaType, aRv);
|
|
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool needToReportMemoryAllocation = false;
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
false, alphaType, aRv);
|
|
}
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, SVGImageElement& aImageEl,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
bool writeOnly = true;
|
|
gfxAlphaType alphaType = gfxAlphaType::NonPremult;
|
|
|
|
// Get the SourceSurface out from the image element and then do security
|
|
// checking.
|
|
RefPtr<SourceSurface> surface = GetSurfaceFromElement(
|
|
aGlobal, aImageEl, &writeOnly, aOptions, &alphaType, aRv);
|
|
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool needToReportMemoryAllocation = false;
|
|
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
false, alphaType, aRv);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, HTMLVideoElement& aVideoEl,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
aVideoEl.LogVisibility(
|
|
mozilla::dom::HTMLVideoElement::CallerAPI::CREATE_IMAGEBITMAP);
|
|
|
|
// Check network state.
|
|
if (aVideoEl.NetworkState() == NETWORK_EMPTY) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
// Check ready state.
|
|
// Cannot be HTMLMediaElement::HAVE_NOTHING or
|
|
// HTMLMediaElement::HAVE_METADATA.
|
|
if (aVideoEl.ReadyState() <= HAVE_METADATA) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
// Check security.
|
|
nsCOMPtr<nsIPrincipal> principal = aVideoEl.GetCurrentVideoPrincipal();
|
|
bool hadCrossOriginRedirects = aVideoEl.HadCrossOriginRedirects();
|
|
bool CORSUsed = aVideoEl.GetCORSMode() != CORS_NONE;
|
|
bool writeOnly = CanvasUtils::CheckWriteOnlySecurity(CORSUsed, principal,
|
|
hadCrossOriginRedirects);
|
|
|
|
// Create ImageBitmap.
|
|
RefPtr<layers::Image> data = aVideoEl.GetCurrentImage();
|
|
if (!data) {
|
|
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<SourceSurface> surface = data->GetAsSourceSurface();
|
|
if (!surface) {
|
|
// preserve original behavior in case of unavailble surface
|
|
RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
|
|
return ret.forget();
|
|
}
|
|
|
|
bool needToReportMemoryAllocation = false;
|
|
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
false, gfxAlphaType::Premult, aRv);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, HTMLCanvasElement& aCanvasEl,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
if (aCanvasEl.Width() == 0 || aCanvasEl.Height() == 0) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
bool writeOnly = true;
|
|
gfxAlphaType alphaType = gfxAlphaType::NonPremult;
|
|
|
|
RefPtr<SourceSurface> surface = GetSurfaceFromElement(
|
|
aGlobal, aCanvasEl, &writeOnly, aOptions, &alphaType, aRv);
|
|
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!writeOnly) {
|
|
writeOnly = aCanvasEl.IsWriteOnly();
|
|
}
|
|
|
|
// If the HTMLCanvasElement's rendering context is WebGL/WebGPU,
|
|
// then the snapshot we got from the HTMLCanvasElement is
|
|
// a DataSourceSurface which is a copy of the rendering context.
|
|
// We handle cropping in this case.
|
|
bool needToReportMemoryAllocation = false;
|
|
bool mustCopy = false;
|
|
|
|
if ((aCanvasEl.GetCurrentContextType() == CanvasContextType::WebGL1 ||
|
|
aCanvasEl.GetCurrentContextType() == CanvasContextType::WebGL2 ||
|
|
aCanvasEl.GetCurrentContextType() == CanvasContextType::WebGPU) &&
|
|
aCropRect.isSome()) {
|
|
mustCopy = true;
|
|
}
|
|
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
mustCopy, alphaType, aRv);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, OffscreenCanvas& aOffscreenCanvas,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
if (aOffscreenCanvas.Width() == 0) {
|
|
aRv.ThrowInvalidStateError("Passed-in canvas has width 0");
|
|
return nullptr;
|
|
}
|
|
|
|
if (aOffscreenCanvas.Height() == 0) {
|
|
aRv.ThrowInvalidStateError("Passed-in canvas has height 0");
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t flags = nsLayoutUtils::SFE_WANT_FIRST_FRAME_IF_IMAGE;
|
|
|
|
// by default surfaces have premultiplied alpha
|
|
// attempt to get non premultiplied if required
|
|
if (aOptions.mPremultiplyAlpha == PremultiplyAlpha::None) {
|
|
flags |= nsLayoutUtils::SFE_ALLOW_NON_PREMULT;
|
|
}
|
|
|
|
SurfaceFromElementResult res =
|
|
nsLayoutUtils::SurfaceFromOffscreenCanvas(&aOffscreenCanvas, flags);
|
|
|
|
RefPtr<SourceSurface> surface = res.GetSourceSurface();
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.ThrowInvalidStateError("Passed-in canvas failed to create snapshot");
|
|
return nullptr;
|
|
}
|
|
|
|
gfxAlphaType alphaType = res.mAlphaType;
|
|
bool writeOnly = res.mIsWriteOnly;
|
|
|
|
// If the OffscreenCanvas's rendering context is WebGL/WebGPU, then the
|
|
// snapshot we got from the OffscreenCanvas is a DataSourceSurface which
|
|
// is a copy of the rendering context. We handle cropping in this case.
|
|
bool needToReportMemoryAllocation = false;
|
|
bool mustCopy =
|
|
aCropRect.isSome() &&
|
|
(aOffscreenCanvas.GetContextType() == CanvasContextType::WebGL1 ||
|
|
aOffscreenCanvas.GetContextType() == CanvasContextType::WebGL2 ||
|
|
aOffscreenCanvas.GetContextType() == CanvasContextType::WebGPU);
|
|
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
mustCopy, alphaType, aRv);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, ImageData& aImageData,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
// Copy data into SourceSurface.
|
|
RootedSpiderMonkeyInterface<Uint8ClampedArray> array(RootingCx());
|
|
if (!array.Init(aImageData.GetDataObject())) {
|
|
aRv.ThrowInvalidStateError(
|
|
"Failed to extract Uint8ClampedArray from ImageData (security check "
|
|
"failed?)");
|
|
return nullptr;
|
|
}
|
|
array.ComputeState();
|
|
const SurfaceFormat FORMAT = SurfaceFormat::R8G8B8A8;
|
|
// ImageData's underlying data is not alpha-premultiplied.
|
|
auto alphaType = (aOptions.mPremultiplyAlpha == PremultiplyAlpha::Premultiply)
|
|
? gfxAlphaType::Premult
|
|
: gfxAlphaType::NonPremult;
|
|
|
|
const uint32_t BYTES_PER_PIXEL = BytesPerPixel(FORMAT);
|
|
const uint32_t imageWidth = aImageData.Width();
|
|
const uint32_t imageHeight = aImageData.Height();
|
|
const uint32_t imageStride = imageWidth * BYTES_PER_PIXEL;
|
|
const uint32_t dataLength = array.Length();
|
|
const gfx::IntSize imageSize(imageWidth, imageHeight);
|
|
|
|
// Check the ImageData is neutered or not.
|
|
if (imageWidth == 0 || imageHeight == 0) {
|
|
aRv.ThrowInvalidStateError("Passed-in image is empty");
|
|
return nullptr;
|
|
}
|
|
|
|
if ((imageWidth * imageHeight * BYTES_PER_PIXEL) != dataLength) {
|
|
aRv.ThrowInvalidStateError("Data size / image format mismatch");
|
|
return nullptr;
|
|
}
|
|
|
|
// Create and Crop the raw data into a layers::Image
|
|
RefPtr<layers::Image> data;
|
|
|
|
// If the data could move during a GC, copy it out into a local buffer that
|
|
// lives until a CreateImageFromRawData lower in the stack copies it.
|
|
// Reassure the static analysis that we know what we're doing.
|
|
size_t maxInline = JS_MaxMovableTypedArraySize();
|
|
uint8_t inlineDataBuffer[maxInline];
|
|
uint8_t* fixedData = array.FixedData(inlineDataBuffer, maxInline);
|
|
|
|
// Lie to the hazard analysis and say that we're done with everything that
|
|
// `array` was using (safe because the data buffer is fixed, and the holding
|
|
// JSObject is being kept alive elsewhere.)
|
|
array.Reset();
|
|
|
|
if (NS_IsMainThread()) {
|
|
data = CreateImageFromRawData(imageSize, imageStride, FORMAT, fixedData,
|
|
dataLength, aCropRect, aOptions);
|
|
} else {
|
|
RefPtr<CreateImageFromRawDataInMainThreadSyncTask> task =
|
|
new CreateImageFromRawDataInMainThreadSyncTask(
|
|
fixedData, dataLength, imageStride, FORMAT, imageSize, aCropRect,
|
|
getter_AddRefs(data), aOptions);
|
|
task->Dispatch(Canceling, aRv);
|
|
}
|
|
|
|
if (NS_WARN_IF(!data)) {
|
|
aRv.ThrowInvalidStateError("Failed to create internal image");
|
|
return nullptr;
|
|
}
|
|
|
|
// Create an ImageBitmap.
|
|
RefPtr<ImageBitmap> ret =
|
|
new ImageBitmap(aGlobal, data, false /* write-only */, alphaType);
|
|
|
|
ret->mAllocatedImageData = true;
|
|
|
|
// The cropping information has been handled in the CreateImageFromRawData()
|
|
// function.
|
|
|
|
return ret.forget();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, CanvasRenderingContext2D& aCanvasCtx,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aGlobal);
|
|
nsGlobalWindowInner* window = nsGlobalWindowInner::Cast(win);
|
|
if (NS_WARN_IF(!window) || !window->GetExtantDoc()) {
|
|
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
window->GetExtantDoc()->WarnOnceAbout(
|
|
DeprecatedOperations::eCreateImageBitmapCanvasRenderingContext2D);
|
|
|
|
// Check write-only mode.
|
|
bool writeOnly =
|
|
aCanvasCtx.GetCanvas()->IsWriteOnly() || aCanvasCtx.IsWriteOnly();
|
|
|
|
RefPtr<SourceSurface> surface = aCanvasCtx.GetSurfaceSnapshot();
|
|
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
|
|
const IntSize surfaceSize = surface->GetSize();
|
|
if (surfaceSize.width == 0 || surfaceSize.height == 0) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
bool needToReportMemoryAllocation = true;
|
|
|
|
return CreateImageBitmapInternal(aGlobal, surface, aCropRect, aOptions,
|
|
writeOnly, needToReportMemoryAllocation,
|
|
false, gfxAlphaType::Premult, aRv);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<ImageBitmap> ImageBitmap::CreateInternal(
|
|
nsIGlobalObject* aGlobal, ImageBitmap& aImageBitmap,
|
|
const Maybe<IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
if (!aImageBitmap.mData) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
IntRect cropRect = aImageBitmap.mPictureRect;
|
|
RefPtr<SourceSurface> surface;
|
|
|
|
bool needToReportMemoryAllocation = false;
|
|
|
|
if (aImageBitmap.mSurface) {
|
|
// the source imageBitmap already has a cropped surface, just use this
|
|
surface = aImageBitmap.mSurface;
|
|
cropRect = aCropRect.valueOr(cropRect);
|
|
} else {
|
|
RefPtr<layers::Image> data = aImageBitmap.mData;
|
|
surface = data->GetAsSourceSurface();
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
|
|
if (aCropRect.isSome()) {
|
|
// get new crop rect relative to original uncropped surface
|
|
IntRect newCropRect = aCropRect.ref();
|
|
newCropRect = FixUpNegativeDimension(newCropRect, aRv);
|
|
|
|
newCropRect.MoveBy(cropRect.X(), cropRect.Y());
|
|
|
|
if (cropRect.Contains(newCropRect)) {
|
|
// new crop region within existing surface
|
|
// safe to just crop this with new rect
|
|
cropRect = newCropRect;
|
|
} else {
|
|
// crop includes area outside original cropped region
|
|
// create new surface cropped by original bitmap crop rect
|
|
RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface();
|
|
|
|
surface = CropAndCopyDataSourceSurface(dataSurface, cropRect);
|
|
if (NS_WARN_IF(!surface)) {
|
|
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
needToReportMemoryAllocation = true;
|
|
cropRect = aCropRect.ref();
|
|
}
|
|
}
|
|
}
|
|
|
|
return CreateImageBitmapInternal(
|
|
aGlobal, surface, Some(cropRect), aOptions, aImageBitmap.mWriteOnly,
|
|
needToReportMemoryAllocation, false, aImageBitmap.mAlphaType, aRv);
|
|
}
|
|
|
|
class FulfillImageBitmapPromise {
|
|
protected:
|
|
FulfillImageBitmapPromise(Promise* aPromise, ImageBitmap* aImageBitmap)
|
|
: mPromise(aPromise), mImageBitmap(aImageBitmap) {
|
|
MOZ_ASSERT(aPromise);
|
|
}
|
|
|
|
void DoFulfillImageBitmapPromise() { mPromise->MaybeResolve(mImageBitmap); }
|
|
|
|
private:
|
|
RefPtr<Promise> mPromise;
|
|
RefPtr<ImageBitmap> mImageBitmap;
|
|
};
|
|
|
|
class FulfillImageBitmapPromiseTask final : public Runnable,
|
|
public FulfillImageBitmapPromise {
|
|
public:
|
|
FulfillImageBitmapPromiseTask(Promise* aPromise, ImageBitmap* aImageBitmap)
|
|
: Runnable("dom::FulfillImageBitmapPromiseTask"),
|
|
FulfillImageBitmapPromise(aPromise, aImageBitmap) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
DoFulfillImageBitmapPromise();
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
class FulfillImageBitmapPromiseWorkerTask final
|
|
: public WorkerSameThreadRunnable,
|
|
public FulfillImageBitmapPromise {
|
|
public:
|
|
FulfillImageBitmapPromiseWorkerTask(Promise* aPromise,
|
|
ImageBitmap* aImageBitmap)
|
|
: WorkerSameThreadRunnable(GetCurrentThreadWorkerPrivate()),
|
|
FulfillImageBitmapPromise(aPromise, aImageBitmap) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
DoFulfillImageBitmapPromise();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
static void AsyncFulfillImageBitmapPromise(Promise* aPromise,
|
|
ImageBitmap* aImageBitmap) {
|
|
if (NS_IsMainThread()) {
|
|
nsCOMPtr<nsIRunnable> task =
|
|
new FulfillImageBitmapPromiseTask(aPromise, aImageBitmap);
|
|
NS_DispatchToCurrentThread(task); // Actually, to the main-thread.
|
|
} else {
|
|
RefPtr<FulfillImageBitmapPromiseWorkerTask> task =
|
|
new FulfillImageBitmapPromiseWorkerTask(aPromise, aImageBitmap);
|
|
task->Dispatch(); // Actually, to the current worker-thread.
|
|
}
|
|
}
|
|
|
|
class CreateImageBitmapFromBlobRunnable;
|
|
|
|
class CreateImageBitmapFromBlob final : public DiscardableRunnable,
|
|
public imgIContainerCallback,
|
|
public nsIInputStreamCallback {
|
|
friend class CreateImageBitmapFromBlobRunnable;
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_IMGICONTAINERCALLBACK
|
|
NS_DECL_NSIINPUTSTREAMCALLBACK
|
|
|
|
static already_AddRefed<CreateImageBitmapFromBlob> Create(
|
|
Promise* aPromise, nsIGlobalObject* aGlobal, Blob& aBlob,
|
|
const Maybe<IntRect>& aCropRect, nsIEventTarget* aMainThreadEventTarget,
|
|
const ImageBitmapOptions& aOptions);
|
|
|
|
NS_IMETHOD Run() override {
|
|
MOZ_ASSERT(IsCurrentThread());
|
|
|
|
nsresult rv = StartMimeTypeAndDecodeAndCropBlob();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(nullptr, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Called by the WorkerRef.
|
|
void WorkerShuttingDown();
|
|
|
|
private:
|
|
CreateImageBitmapFromBlob(Promise* aPromise, nsIGlobalObject* aGlobal,
|
|
already_AddRefed<nsIInputStream> aInputStream,
|
|
const Maybe<IntRect>& aCropRect,
|
|
nsIEventTarget* aMainThreadEventTarget,
|
|
const ImageBitmapOptions& aOptions)
|
|
: DiscardableRunnable("dom::CreateImageBitmapFromBlob"),
|
|
|
|
mMutex("dom::CreateImageBitmapFromBlob::mMutex"),
|
|
mPromise(aPromise),
|
|
mGlobalObject(aGlobal),
|
|
mInputStream(std::move(aInputStream)),
|
|
mCropRect(aCropRect),
|
|
mMainThreadEventTarget(aMainThreadEventTarget),
|
|
mOptions(aOptions),
|
|
mThread(PR_GetCurrentThread()) {}
|
|
|
|
virtual ~CreateImageBitmapFromBlob() = default;
|
|
|
|
bool IsCurrentThread() const { return mThread == PR_GetCurrentThread(); }
|
|
|
|
// Called on the owning thread.
|
|
nsresult StartMimeTypeAndDecodeAndCropBlob();
|
|
|
|
// Will be called when the decoding + cropping is completed on the
|
|
// main-thread. This could the not the owning thread!
|
|
void MimeTypeAndDecodeAndCropBlobCompletedMainThread(layers::Image* aImage,
|
|
nsresult aStatus);
|
|
|
|
// Will be called when the decoding + cropping is completed on the owning
|
|
// thread.
|
|
void MimeTypeAndDecodeAndCropBlobCompletedOwningThread(layers::Image* aImage,
|
|
nsresult aStatus);
|
|
|
|
// This is called on the main-thread only.
|
|
nsresult MimeTypeAndDecodeAndCropBlob();
|
|
|
|
// This is called on the main-thread only.
|
|
nsresult DecodeAndCropBlob(const nsACString& aMimeType);
|
|
|
|
// This is called on the main-thread only.
|
|
nsresult GetMimeTypeSync(nsACString& aMimeType);
|
|
|
|
// This is called on the main-thread only.
|
|
nsresult GetMimeTypeAsync();
|
|
|
|
Mutex mMutex MOZ_UNANNOTATED;
|
|
|
|
// The access to this object is protected by mutex but is always nullified on
|
|
// the owning thread.
|
|
RefPtr<ThreadSafeWorkerRef> mWorkerRef;
|
|
|
|
// Touched only on the owning thread.
|
|
RefPtr<Promise> mPromise;
|
|
|
|
// Touched only on the owning thread.
|
|
nsCOMPtr<nsIGlobalObject> mGlobalObject;
|
|
|
|
nsCOMPtr<nsIInputStream> mInputStream;
|
|
Maybe<IntRect> mCropRect;
|
|
nsCOMPtr<nsIEventTarget> mMainThreadEventTarget;
|
|
const ImageBitmapOptions mOptions;
|
|
void* mThread;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS_INHERITED(CreateImageBitmapFromBlob, DiscardableRunnable,
|
|
imgIContainerCallback, nsIInputStreamCallback)
|
|
|
|
class CreateImageBitmapFromBlobRunnable : public WorkerRunnable {
|
|
public:
|
|
explicit CreateImageBitmapFromBlobRunnable(WorkerPrivate* aWorkerPrivate,
|
|
CreateImageBitmapFromBlob* aTask,
|
|
layers::Image* aImage,
|
|
nsresult aStatus)
|
|
: WorkerRunnable(aWorkerPrivate),
|
|
mTask(aTask),
|
|
mImage(aImage),
|
|
mStatus(aStatus) {}
|
|
|
|
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
|
|
mTask->MimeTypeAndDecodeAndCropBlobCompletedOwningThread(mImage, mStatus);
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
RefPtr<CreateImageBitmapFromBlob> mTask;
|
|
RefPtr<layers::Image> mImage;
|
|
nsresult mStatus;
|
|
};
|
|
|
|
static void AsyncCreateImageBitmapFromBlob(Promise* aPromise,
|
|
nsIGlobalObject* aGlobal,
|
|
Blob& aBlob,
|
|
const Maybe<IntRect>& aCropRect,
|
|
const ImageBitmapOptions& aOptions) {
|
|
// Let's identify the main-thread event target.
|
|
nsCOMPtr<nsIEventTarget> mainThreadEventTarget;
|
|
if (NS_IsMainThread()) {
|
|
mainThreadEventTarget = aGlobal->EventTargetFor(TaskCategory::Other);
|
|
} else {
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
mainThreadEventTarget = workerPrivate->MainThreadEventTarget();
|
|
}
|
|
|
|
RefPtr<CreateImageBitmapFromBlob> task = CreateImageBitmapFromBlob::Create(
|
|
aPromise, aGlobal, aBlob, aCropRect, mainThreadEventTarget, aOptions);
|
|
if (NS_WARN_IF(!task)) {
|
|
aPromise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
|
|
NS_DispatchToCurrentThread(task);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<Promise> ImageBitmap::Create(
|
|
nsIGlobalObject* aGlobal, const ImageBitmapSource& aSrc,
|
|
const Maybe<gfx::IntRect>& aCropRect, const ImageBitmapOptions& aOptions,
|
|
ErrorResult& aRv) {
|
|
MOZ_ASSERT(aGlobal);
|
|
|
|
RefPtr<Promise> promise = Promise::Create(aGlobal, aRv);
|
|
|
|
if (NS_WARN_IF(aRv.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (aCropRect.isSome()) {
|
|
if (aCropRect->Width() == 0) {
|
|
aRv.ThrowRangeError(
|
|
"The crop rect width passed to createImageBitmap must be nonzero");
|
|
return promise.forget();
|
|
}
|
|
|
|
if (aCropRect->Height() == 0) {
|
|
aRv.ThrowRangeError(
|
|
"The crop rect height passed to createImageBitmap must be nonzero");
|
|
return promise.forget();
|
|
}
|
|
}
|
|
|
|
if (aOptions.mResizeWidth.WasPassed() && aOptions.mResizeWidth.Value() == 0) {
|
|
aRv.ThrowInvalidStateError(
|
|
"The resizeWidth passed to createImageBitmap must be nonzero");
|
|
return promise.forget();
|
|
}
|
|
|
|
if (aOptions.mResizeHeight.WasPassed() &&
|
|
aOptions.mResizeHeight.Value() == 0) {
|
|
aRv.ThrowInvalidStateError(
|
|
"The resizeHeight passed to createImageBitmap must be nonzero");
|
|
return promise.forget();
|
|
}
|
|
|
|
RefPtr<ImageBitmap> imageBitmap;
|
|
|
|
if (aSrc.IsHTMLImageElement()) {
|
|
MOZ_ASSERT(
|
|
NS_IsMainThread(),
|
|
"Creating ImageBitmap from HTMLImageElement off the main thread.");
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsHTMLImageElement(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsSVGImageElement()) {
|
|
MOZ_ASSERT(
|
|
NS_IsMainThread(),
|
|
"Creating ImageBitmap from SVGImageElement off the main thread.");
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsSVGImageElement(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsHTMLVideoElement()) {
|
|
MOZ_ASSERT(
|
|
NS_IsMainThread(),
|
|
"Creating ImageBitmap from HTMLVideoElement off the main thread.");
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsHTMLVideoElement(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsHTMLCanvasElement()) {
|
|
MOZ_ASSERT(
|
|
NS_IsMainThread(),
|
|
"Creating ImageBitmap from HTMLCanvasElement off the main thread.");
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsHTMLCanvasElement(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsOffscreenCanvas()) {
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsOffscreenCanvas(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsImageData()) {
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsImageData(), aCropRect,
|
|
aOptions, aRv);
|
|
} else if (aSrc.IsCanvasRenderingContext2D()) {
|
|
MOZ_ASSERT(NS_IsMainThread(),
|
|
"Creating ImageBitmap from CanvasRenderingContext2D off the "
|
|
"main thread.");
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsCanvasRenderingContext2D(),
|
|
aCropRect, aOptions, aRv);
|
|
} else if (aSrc.IsImageBitmap()) {
|
|
imageBitmap = CreateInternal(aGlobal, aSrc.GetAsImageBitmap(), aCropRect,
|
|
aOptions, aRv);
|
|
} else if (aSrc.IsBlob()) {
|
|
AsyncCreateImageBitmapFromBlob(promise, aGlobal, aSrc.GetAsBlob(),
|
|
aCropRect, aOptions);
|
|
return promise.forget();
|
|
} else {
|
|
MOZ_CRASH("Unsupported type!");
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aRv.Failed()) {
|
|
AsyncFulfillImageBitmapPromise(promise, imageBitmap);
|
|
}
|
|
|
|
return promise.forget();
|
|
}
|
|
|
|
/*static*/
|
|
JSObject* ImageBitmap::ReadStructuredClone(
|
|
JSContext* aCx, JSStructuredCloneReader* aReader, nsIGlobalObject* aParent,
|
|
const nsTArray<RefPtr<DataSourceSurface>>& aClonedSurfaces,
|
|
uint32_t aIndex) {
|
|
MOZ_ASSERT(aCx);
|
|
MOZ_ASSERT(aReader);
|
|
// aParent might be null.
|
|
|
|
uint32_t picRectX_;
|
|
uint32_t picRectY_;
|
|
uint32_t picRectWidth_;
|
|
uint32_t picRectHeight_;
|
|
uint32_t alphaType_;
|
|
uint32_t writeOnly;
|
|
|
|
if (!JS_ReadUint32Pair(aReader, &picRectX_, &picRectY_) ||
|
|
!JS_ReadUint32Pair(aReader, &picRectWidth_, &picRectHeight_) ||
|
|
!JS_ReadUint32Pair(aReader, &alphaType_, &writeOnly)) {
|
|
return nullptr;
|
|
}
|
|
|
|
int32_t picRectX = BitwiseCast<int32_t>(picRectX_);
|
|
int32_t picRectY = BitwiseCast<int32_t>(picRectY_);
|
|
int32_t picRectWidth = BitwiseCast<int32_t>(picRectWidth_);
|
|
int32_t picRectHeight = BitwiseCast<int32_t>(picRectHeight_);
|
|
const auto alphaType = BitwiseCast<gfxAlphaType>(alphaType_);
|
|
|
|
// Create a new ImageBitmap.
|
|
MOZ_ASSERT(!aClonedSurfaces.IsEmpty());
|
|
MOZ_ASSERT(aIndex < aClonedSurfaces.Length());
|
|
|
|
// RefPtr<ImageBitmap> needs to go out of scope before toObjectOrNull() is
|
|
// called because the static analysis thinks dereferencing XPCOM objects
|
|
// can GC (because in some cases it can!), and a return statement with a
|
|
// JSObject* type means that JSObject* is on the stack as a raw pointer
|
|
// while destructors are running.
|
|
JS::Rooted<JS::Value> value(aCx);
|
|
{
|
|
#ifdef FUZZING
|
|
if (aIndex >= aClonedSurfaces.Length()) {
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
RefPtr<layers::Image> img = CreateImageFromSurface(aClonedSurfaces[aIndex]);
|
|
RefPtr<ImageBitmap> imageBitmap =
|
|
new ImageBitmap(aParent, img, !!writeOnly, alphaType);
|
|
|
|
ErrorResult error;
|
|
imageBitmap->SetPictureRect(
|
|
IntRect(picRectX, picRectY, picRectWidth, picRectHeight), error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
error.SuppressException();
|
|
return nullptr;
|
|
}
|
|
|
|
if (!GetOrCreateDOMReflector(aCx, imageBitmap, &value)) {
|
|
return nullptr;
|
|
}
|
|
|
|
imageBitmap->mAllocatedImageData = true;
|
|
}
|
|
|
|
return &(value.toObject());
|
|
}
|
|
|
|
/*static*/
|
|
void ImageBitmap::WriteStructuredClone(
|
|
JSStructuredCloneWriter* aWriter,
|
|
nsTArray<RefPtr<DataSourceSurface>>& aClonedSurfaces,
|
|
ImageBitmap* aImageBitmap, ErrorResult& aRv) {
|
|
MOZ_ASSERT(aWriter);
|
|
MOZ_ASSERT(aImageBitmap);
|
|
|
|
if (aImageBitmap->IsWriteOnly()) {
|
|
return aRv.ThrowDataCloneError("Cannot clone ImageBitmap, is write-only");
|
|
}
|
|
|
|
if (!aImageBitmap->mData) {
|
|
// A closed image cannot be cloned.
|
|
return aRv.ThrowDataCloneError("Cannot clone ImageBitmap, is closed");
|
|
}
|
|
|
|
const uint32_t picRectX = BitwiseCast<uint32_t>(aImageBitmap->mPictureRect.x);
|
|
const uint32_t picRectY = BitwiseCast<uint32_t>(aImageBitmap->mPictureRect.y);
|
|
const uint32_t picRectWidth =
|
|
BitwiseCast<uint32_t>(aImageBitmap->mPictureRect.width);
|
|
const uint32_t picRectHeight =
|
|
BitwiseCast<uint32_t>(aImageBitmap->mPictureRect.height);
|
|
const uint32_t alphaType = BitwiseCast<uint32_t>(aImageBitmap->mAlphaType);
|
|
|
|
// Indexing the cloned surfaces and send the index to the receiver.
|
|
uint32_t index = aClonedSurfaces.Length();
|
|
|
|
if (NS_WARN_IF(!JS_WriteUint32Pair(aWriter, SCTAG_DOM_IMAGEBITMAP, index)) ||
|
|
NS_WARN_IF(!JS_WriteUint32Pair(aWriter, picRectX, picRectY)) ||
|
|
NS_WARN_IF(!JS_WriteUint32Pair(aWriter, picRectWidth, picRectHeight)) ||
|
|
NS_WARN_IF(
|
|
!JS_WriteUint32Pair(aWriter, alphaType, aImageBitmap->mWriteOnly))) {
|
|
return aRv.ThrowDataCloneError(
|
|
"Cannot clone ImageBitmap, failed to write params");
|
|
}
|
|
|
|
RefPtr<SourceSurface> surface = aImageBitmap->mData->GetAsSourceSurface();
|
|
if (NS_WARN_IF(!surface)) {
|
|
return aRv.ThrowDataCloneError("Cannot clone ImageBitmap, no surface");
|
|
}
|
|
|
|
RefPtr<DataSourceSurface> snapshot = surface->GetDataSurface();
|
|
if (NS_WARN_IF(!snapshot)) {
|
|
return aRv.ThrowDataCloneError("Cannot clone ImageBitmap, no data surface");
|
|
}
|
|
|
|
RefPtr<DataSourceSurface> dstDataSurface;
|
|
{
|
|
// DataSourceSurfaceD2D1::GetStride() will call EnsureMapped implicitly and
|
|
// won't Unmap after exiting function. So instead calling GetStride()
|
|
// directly, using ScopedMap to get stride.
|
|
DataSourceSurface::ScopedMap map(snapshot, DataSourceSurface::READ);
|
|
if (NS_WARN_IF(!map.IsMapped())) {
|
|
return aRv.ThrowDataCloneError(
|
|
"Cannot clone ImageBitmap, cannot map surface");
|
|
}
|
|
|
|
dstDataSurface = Factory::CreateDataSourceSurfaceWithStride(
|
|
snapshot->GetSize(), snapshot->GetFormat(), map.GetStride(), true);
|
|
}
|
|
if (NS_WARN_IF(!dstDataSurface)) {
|
|
return aRv.ThrowDataCloneError("Cannot clone ImageBitmap, out of memory");
|
|
}
|
|
Factory::CopyDataSourceSurface(snapshot, dstDataSurface);
|
|
aClonedSurfaces.AppendElement(dstDataSurface);
|
|
}
|
|
|
|
size_t ImageBitmap::GetAllocatedSize() const {
|
|
if (!mAllocatedImageData) {
|
|
return 0;
|
|
}
|
|
|
|
// Calculate how many bytes are used.
|
|
if (mData->GetFormat() == mozilla::ImageFormat::PLANAR_YCBCR) {
|
|
return mData->AsPlanarYCbCrImage()->GetDataSize();
|
|
}
|
|
|
|
if (mData->GetFormat() == mozilla::ImageFormat::NV_IMAGE) {
|
|
return mData->AsNVImage()->GetBufferSize();
|
|
}
|
|
|
|
RefPtr<SourceSurface> surface = mData->GetAsSourceSurface();
|
|
if (NS_WARN_IF(!surface)) {
|
|
return 0;
|
|
}
|
|
|
|
const int bytesPerPixel = BytesPerPixel(surface->GetFormat());
|
|
return surface->GetSize().height * surface->GetSize().width * bytesPerPixel;
|
|
}
|
|
|
|
size_t BindingJSObjectMallocBytes(ImageBitmap* aBitmap) {
|
|
return aBitmap->GetAllocatedSize();
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<CreateImageBitmapFromBlob> CreateImageBitmapFromBlob::Create(
|
|
Promise* aPromise, nsIGlobalObject* aGlobal, Blob& aBlob,
|
|
const Maybe<IntRect>& aCropRect, nsIEventTarget* aMainThreadEventTarget,
|
|
const ImageBitmapOptions& aOptions) {
|
|
// Get the internal stream of the blob.
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
ErrorResult error;
|
|
aBlob.Impl()->CreateInputStream(getter_AddRefs(stream), error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!NS_InputStreamIsBuffered(stream)) {
|
|
nsCOMPtr<nsIInputStream> bufferedStream;
|
|
nsresult rv = NS_NewBufferedInputStream(getter_AddRefs(bufferedStream),
|
|
stream.forget(), 4096);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
stream = bufferedStream;
|
|
}
|
|
|
|
RefPtr<CreateImageBitmapFromBlob> task = new CreateImageBitmapFromBlob(
|
|
aPromise, aGlobal, stream.forget(), aCropRect, aMainThreadEventTarget,
|
|
aOptions);
|
|
|
|
// Nothing to do for the main-thread.
|
|
if (NS_IsMainThread()) {
|
|
return task.forget();
|
|
}
|
|
|
|
// Let's use a WorkerRef to keep the worker alive if this is not the
|
|
// main-thread.
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
|
|
RefPtr<StrongWorkerRef> workerRef =
|
|
StrongWorkerRef::Create(workerPrivate, "CreateImageBitmapFromBlob",
|
|
[task]() { task->WorkerShuttingDown(); });
|
|
if (NS_WARN_IF(!workerRef)) {
|
|
return nullptr;
|
|
}
|
|
|
|
task->mWorkerRef = new ThreadSafeWorkerRef(workerRef);
|
|
return task.forget();
|
|
}
|
|
|
|
nsresult CreateImageBitmapFromBlob::StartMimeTypeAndDecodeAndCropBlob() {
|
|
MOZ_ASSERT(IsCurrentThread());
|
|
|
|
// Workers.
|
|
if (!NS_IsMainThread()) {
|
|
RefPtr<CreateImageBitmapFromBlob> self = this;
|
|
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
|
|
"CreateImageBitmapFromBlob::MimeTypeAndDecodeAndCropBlob", [self]() {
|
|
nsresult rv = self->MimeTypeAndDecodeAndCropBlob();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
self->MimeTypeAndDecodeAndCropBlobCompletedMainThread(nullptr, rv);
|
|
}
|
|
});
|
|
|
|
return mMainThreadEventTarget->Dispatch(r.forget());
|
|
}
|
|
|
|
// Main-thread.
|
|
return MimeTypeAndDecodeAndCropBlob();
|
|
}
|
|
|
|
nsresult CreateImageBitmapFromBlob::MimeTypeAndDecodeAndCropBlob() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
nsAutoCString mimeType;
|
|
nsresult rv = GetMimeTypeSync(mimeType);
|
|
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
|
|
return GetMimeTypeAsync();
|
|
}
|
|
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return DecodeAndCropBlob(mimeType);
|
|
}
|
|
|
|
nsresult CreateImageBitmapFromBlob::DecodeAndCropBlob(
|
|
const nsACString& aMimeType) {
|
|
// Get the Component object.
|
|
nsCOMPtr<imgITools> imgtool = do_GetService(NS_IMGTOOLS_CID);
|
|
if (NS_WARN_IF(!imgtool)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Decode image.
|
|
nsresult rv = imgtool->DecodeImageAsync(mInputStream, aMimeType, this,
|
|
mMainThreadEventTarget);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult sniff_cb(nsIInputStream* aInputStream, void* aClosure,
|
|
const char* aFromRawSegment, uint32_t aToOffset,
|
|
uint32_t aCount, uint32_t* aWriteCount) {
|
|
nsACString* mimeType = static_cast<nsACString*>(aClosure);
|
|
MOZ_ASSERT(mimeType);
|
|
|
|
if (aCount > 0) {
|
|
imgLoader::GetMimeTypeFromContent(aFromRawSegment, aCount, *mimeType);
|
|
}
|
|
|
|
*aWriteCount = 0;
|
|
|
|
// We don't want to consume data from the stream.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult CreateImageBitmapFromBlob::GetMimeTypeSync(nsACString& aMimeType) {
|
|
uint32_t dummy;
|
|
return mInputStream->ReadSegments(sniff_cb, &aMimeType, 128, &dummy);
|
|
}
|
|
|
|
nsresult CreateImageBitmapFromBlob::GetMimeTypeAsync() {
|
|
nsCOMPtr<nsIAsyncInputStream> asyncInputStream =
|
|
do_QueryInterface(mInputStream);
|
|
if (NS_WARN_IF(!asyncInputStream)) {
|
|
// If the stream is not async, why are we here?
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return asyncInputStream->AsyncWait(this, 0, 128, mMainThreadEventTarget);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CreateImageBitmapFromBlob::OnInputStreamReady(nsIAsyncInputStream* aStream) {
|
|
// The stream should have data now. Let's start from scratch again.
|
|
nsresult rv = MimeTypeAndDecodeAndCropBlob();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(nullptr, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CreateImageBitmapFromBlob::OnImageReady(imgIContainer* aImgContainer,
|
|
nsresult aStatus) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (NS_FAILED(aStatus)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(nullptr, aStatus);
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_ASSERT(aImgContainer);
|
|
|
|
// Get the surface out.
|
|
uint32_t frameFlags =
|
|
imgIContainer::FLAG_SYNC_DECODE | imgIContainer::FLAG_ASYNC_NOTIFY;
|
|
uint32_t whichFrame = imgIContainer::FRAME_FIRST;
|
|
|
|
if (mOptions.mPremultiplyAlpha == PremultiplyAlpha::None) {
|
|
frameFlags |= imgIContainer::FLAG_DECODE_NO_PREMULTIPLY_ALPHA;
|
|
}
|
|
|
|
if (mOptions.mColorSpaceConversion == ColorSpaceConversion::None) {
|
|
frameFlags |= imgIContainer::FLAG_DECODE_NO_COLORSPACE_CONVERSION;
|
|
}
|
|
|
|
RefPtr<SourceSurface> surface =
|
|
aImgContainer->GetFrame(whichFrame, frameFlags);
|
|
|
|
if (NS_WARN_IF(!surface)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
nullptr, NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Crop the source surface if needed.
|
|
RefPtr<SourceSurface> croppedSurface = surface;
|
|
RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface();
|
|
|
|
// force a copy into unprotected memory as a side effect of
|
|
// CropAndCopyDataSourceSurface
|
|
bool copyRequired = mCropRect.isSome() ||
|
|
mOptions.mImageOrientation == ImageOrientation::FlipY;
|
|
|
|
if (copyRequired) {
|
|
// The blob is just decoded into a RasterImage and not optimized yet, so the
|
|
// _surface_ we get is a DataSourceSurface which wraps the RasterImage's
|
|
// raw buffer.
|
|
//
|
|
// The _surface_ might already be optimized so that its type is not
|
|
// SurfaceType::DATA. However, we could keep using the generic cropping and
|
|
// copying since the decoded buffer is only used in this ImageBitmap so we
|
|
// should crop it to save memory usage.
|
|
//
|
|
// TODO: Bug1189632 is going to refactor this create-from-blob part to
|
|
// decode the blob off the main thread. Re-check if we should do
|
|
// cropping at this moment again there.
|
|
|
|
IntRect cropRect =
|
|
mCropRect.isSome() ? mCropRect.ref() : dataSurface->GetRect();
|
|
|
|
croppedSurface = CropAndCopyDataSourceSurface(dataSurface, cropRect);
|
|
if (NS_WARN_IF(!croppedSurface)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
nullptr, NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return NS_OK;
|
|
}
|
|
|
|
dataSurface = croppedSurface->GetDataSurface();
|
|
|
|
if (mCropRect.isSome()) {
|
|
mCropRect->SetRect(0, 0, dataSurface->GetSize().width,
|
|
dataSurface->GetSize().height);
|
|
}
|
|
}
|
|
|
|
if (mOptions.mImageOrientation == ImageOrientation::FlipY) {
|
|
croppedSurface = FlipYDataSourceSurface(dataSurface);
|
|
}
|
|
|
|
if (mOptions.mResizeWidth.WasPassed() || mOptions.mResizeHeight.WasPassed()) {
|
|
dataSurface = croppedSurface->GetDataSurface();
|
|
croppedSurface = ScaleDataSourceSurface(dataSurface, mOptions);
|
|
if (NS_WARN_IF(!croppedSurface)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
nullptr, NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return NS_OK;
|
|
}
|
|
if (mCropRect.isSome()) {
|
|
mCropRect->SetRect(0, 0, croppedSurface->GetSize().width,
|
|
croppedSurface->GetSize().height);
|
|
}
|
|
}
|
|
|
|
if (NS_WARN_IF(!croppedSurface)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
nullptr, NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Create an Image from the source surface.
|
|
RefPtr<layers::Image> image = CreateImageFromSurface(croppedSurface);
|
|
|
|
if (NS_WARN_IF(!image)) {
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
nullptr, NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return NS_OK;
|
|
}
|
|
|
|
MimeTypeAndDecodeAndCropBlobCompletedMainThread(image, NS_OK);
|
|
return NS_OK;
|
|
}
|
|
|
|
void CreateImageBitmapFromBlob::MimeTypeAndDecodeAndCropBlobCompletedMainThread(
|
|
layers::Image* aImage, nsresult aStatus) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (!IsCurrentThread()) {
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
if (!mWorkerRef) {
|
|
// The worker is already gone.
|
|
return;
|
|
}
|
|
|
|
RefPtr<CreateImageBitmapFromBlobRunnable> r =
|
|
new CreateImageBitmapFromBlobRunnable(mWorkerRef->Private(), this,
|
|
aImage, aStatus);
|
|
r->Dispatch();
|
|
return;
|
|
}
|
|
|
|
MimeTypeAndDecodeAndCropBlobCompletedOwningThread(aImage, aStatus);
|
|
}
|
|
|
|
void CreateImageBitmapFromBlob::
|
|
MimeTypeAndDecodeAndCropBlobCompletedOwningThread(layers::Image* aImage,
|
|
nsresult aStatus) {
|
|
MOZ_ASSERT(IsCurrentThread());
|
|
|
|
if (!mPromise) {
|
|
// The worker is going to be released soon. No needs to continue.
|
|
return;
|
|
}
|
|
|
|
// Let's release what has to be released on the owning thread.
|
|
auto raii = MakeScopeExit([&] {
|
|
// Doing this we also release the worker.
|
|
mWorkerRef = nullptr;
|
|
|
|
mPromise = nullptr;
|
|
mGlobalObject = nullptr;
|
|
});
|
|
|
|
if (NS_WARN_IF(NS_FAILED(aStatus))) {
|
|
mPromise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
|
|
gfxAlphaType alphaType = gfxAlphaType::Premult;
|
|
|
|
if (mOptions.mPremultiplyAlpha == PremultiplyAlpha::None) {
|
|
alphaType = gfxAlphaType::NonPremult;
|
|
}
|
|
|
|
// Create ImageBitmap object.
|
|
RefPtr<ImageBitmap> imageBitmap =
|
|
new ImageBitmap(mGlobalObject, aImage, false /* write-only */, alphaType);
|
|
|
|
if (mCropRect.isSome()) {
|
|
ErrorResult rv;
|
|
imageBitmap->SetPictureRect(mCropRect.ref(), rv);
|
|
|
|
if (rv.Failed()) {
|
|
mPromise->MaybeReject(std::move(rv));
|
|
return;
|
|
}
|
|
}
|
|
|
|
imageBitmap->mAllocatedImageData = true;
|
|
|
|
mPromise->MaybeResolve(imageBitmap);
|
|
}
|
|
|
|
void CreateImageBitmapFromBlob::WorkerShuttingDown() {
|
|
MOZ_ASSERT(IsCurrentThread());
|
|
|
|
MutexAutoLock lock(mMutex);
|
|
|
|
// Let's release all the non-thread-safe objects now.
|
|
mWorkerRef = nullptr;
|
|
mPromise = nullptr;
|
|
mGlobalObject = nullptr;
|
|
}
|
|
|
|
} // namespace mozilla::dom
|