зеркало из https://github.com/mozilla/gecko-dev.git
1913 строки
60 KiB
C++
1913 строки
60 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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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// Must #include ImageLogging.h before any IPDL-generated files or other files
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// that #include prlog.h
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#include "RasterImage.h"
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#include <stdint.h>
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#include <algorithm>
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#include <utility>
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#include "DecodePool.h"
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#include "Decoder.h"
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#include "FrameAnimator.h"
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#include "GeckoProfiler.h"
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#include "IDecodingTask.h"
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#include "ImageLogging.h"
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#include "ImageRegion.h"
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#include "Layers.h"
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#include "LookupResult.h"
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#include "OrientedImage.h"
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#include "SourceBuffer.h"
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#include "SurfaceCache.h"
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#include "gfx2DGlue.h"
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#include "gfxContext.h"
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#include "gfxPlatform.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/Likely.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/SizeOfState.h"
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#include "mozilla/StaticPrefs_image.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/Tuple.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Scale.h"
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#include "nsComponentManagerUtils.h"
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#include "nsError.h"
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#include "nsIConsoleService.h"
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#include "nsIInputStream.h"
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#include "nsIScriptError.h"
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#include "nsISupportsPrimitives.h"
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#include "nsMemory.h"
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#include "nsPresContext.h"
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#include "nsProperties.h"
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#include "prenv.h"
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#include "prsystem.h"
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namespace mozilla {
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using namespace gfx;
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using namespace layers;
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namespace image {
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using std::ceil;
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using std::min;
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#ifndef DEBUG
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NS_IMPL_ISUPPORTS(RasterImage, imgIContainer)
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#else
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NS_IMPL_ISUPPORTS(RasterImage, imgIContainer, imgIContainerDebug)
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#endif
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//******************************************************************************
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RasterImage::RasterImage(nsIURI* aURI /* = nullptr */)
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: ImageResource(aURI), // invoke superclass's constructor
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mSize(0, 0),
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mLockCount(0),
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mDecoderType(DecoderType::UNKNOWN),
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mDecodeCount(0),
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#ifdef DEBUG
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mFramesNotified(0),
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#endif
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mSourceBuffer(MakeNotNull<SourceBuffer*>()),
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mHasSize(false),
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mTransient(false),
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mSyncLoad(false),
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mDiscardable(false),
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mSomeSourceData(false),
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mAllSourceData(false),
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mHasBeenDecoded(false),
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mPendingAnimation(false),
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mAnimationFinished(false),
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mWantFullDecode(false),
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mHandledOrientation(StaticPrefs::image_honor_orientation_metadata()) {
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}
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//******************************************************************************
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RasterImage::~RasterImage() {
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// Make sure our SourceBuffer is marked as complete. This will ensure that any
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// outstanding decoders terminate.
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if (!mSourceBuffer->IsComplete()) {
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mSourceBuffer->Complete(NS_ERROR_ABORT);
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}
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// Release all frames from the surface cache.
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SurfaceCache::RemoveImage(ImageKey(this));
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// Record Telemetry.
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Telemetry::Accumulate(Telemetry::IMAGE_DECODE_COUNT, mDecodeCount);
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}
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nsresult RasterImage::Init(const char* aMimeType, uint32_t aFlags) {
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// We don't support re-initialization
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if (mInitialized) {
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return NS_ERROR_ILLEGAL_VALUE;
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}
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// Not sure an error can happen before init, but be safe
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if (mError) {
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return NS_ERROR_FAILURE;
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}
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// We want to avoid redecodes for transient images.
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MOZ_ASSERT_IF(aFlags & INIT_FLAG_TRANSIENT,
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!(aFlags & INIT_FLAG_DISCARDABLE));
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// Store initialization data
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mDiscardable = !!(aFlags & INIT_FLAG_DISCARDABLE);
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mWantFullDecode = !!(aFlags & INIT_FLAG_DECODE_IMMEDIATELY);
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mTransient = !!(aFlags & INIT_FLAG_TRANSIENT);
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mSyncLoad = !!(aFlags & INIT_FLAG_SYNC_LOAD);
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// Use the MIME type to select a decoder type, and make sure there *is* a
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// decoder for this MIME type.
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NS_ENSURE_ARG_POINTER(aMimeType);
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mDecoderType = DecoderFactory::GetDecoderType(aMimeType);
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if (mDecoderType == DecoderType::UNKNOWN) {
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return NS_ERROR_FAILURE;
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}
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// Lock this image's surfaces in the SurfaceCache if we're not discardable.
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if (!mDiscardable) {
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mLockCount++;
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SurfaceCache::LockImage(ImageKey(this));
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}
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// Mark us as initialized
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mInitialized = true;
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return NS_OK;
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}
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//******************************************************************************
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NS_IMETHODIMP_(void)
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RasterImage::RequestRefresh(const TimeStamp& aTime) {
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if (HadRecentRefresh(aTime)) {
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return;
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}
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EvaluateAnimation();
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if (!mAnimating) {
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return;
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}
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RefreshResult res;
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if (mAnimationState) {
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MOZ_ASSERT(mFrameAnimator);
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res = mFrameAnimator->RequestRefresh(*mAnimationState, aTime);
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}
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#ifdef DEBUG
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if (res.mFrameAdvanced) {
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mFramesNotified++;
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}
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#endif
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// Notify listeners that our frame has actually changed, but do this only
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// once for all frames that we've now passed (if AdvanceFrame() was called
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// more than once).
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if (!res.mDirtyRect.IsEmpty() || res.mFrameAdvanced) {
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auto dirtyRect = UnorientedIntRect::FromUnknownRect(res.mDirtyRect);
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NotifyProgress(NoProgress, dirtyRect);
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}
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if (res.mAnimationFinished) {
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mAnimationFinished = true;
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EvaluateAnimation();
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}
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}
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//******************************************************************************
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NS_IMETHODIMP
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RasterImage::GetWidth(int32_t* aWidth) {
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NS_ENSURE_ARG_POINTER(aWidth);
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if (mError) {
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*aWidth = 0;
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return NS_ERROR_FAILURE;
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}
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*aWidth = mSize.width;
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return NS_OK;
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}
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//******************************************************************************
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NS_IMETHODIMP
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RasterImage::GetHeight(int32_t* aHeight) {
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NS_ENSURE_ARG_POINTER(aHeight);
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if (mError) {
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*aHeight = 0;
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return NS_ERROR_FAILURE;
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}
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*aHeight = mSize.height;
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return NS_OK;
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}
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//******************************************************************************
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nsresult RasterImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) const {
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if (mError) {
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return NS_ERROR_FAILURE;
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}
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aNativeSizes.Clear();
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if (mNativeSizes.IsEmpty()) {
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aNativeSizes.AppendElement(mSize.ToUnknownSize());
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} else {
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for (const auto& size : mNativeSizes) {
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aNativeSizes.AppendElement(size.ToUnknownSize());
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}
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}
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return NS_OK;
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}
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//******************************************************************************
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size_t RasterImage::GetNativeSizesLength() const {
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if (mError || !mHasSize) {
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return 0;
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}
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if (mNativeSizes.IsEmpty()) {
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return 1;
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}
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return mNativeSizes.Length();
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}
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//******************************************************************************
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NS_IMETHODIMP
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RasterImage::GetIntrinsicSize(nsSize* aSize) {
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if (mError) {
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return NS_ERROR_FAILURE;
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}
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*aSize = nsSize(nsPresContext::CSSPixelsToAppUnits(mSize.width),
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nsPresContext::CSSPixelsToAppUnits(mSize.height));
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return NS_OK;
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}
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//******************************************************************************
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Maybe<AspectRatio> RasterImage::GetIntrinsicRatio() {
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if (mError) {
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return Nothing();
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}
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return Some(AspectRatio::FromSize(mSize.width, mSize.height));
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}
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NS_IMETHODIMP_(Orientation)
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RasterImage::GetOrientation() { return mOrientation; }
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NS_IMETHODIMP_(bool)
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RasterImage::HandledOrientation() { return mHandledOrientation; }
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//******************************************************************************
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NS_IMETHODIMP
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RasterImage::GetType(uint16_t* aType) {
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NS_ENSURE_ARG_POINTER(aType);
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*aType = imgIContainer::TYPE_RASTER;
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return NS_OK;
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}
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NS_IMETHODIMP
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RasterImage::GetProducerId(uint32_t* aId) {
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NS_ENSURE_ARG_POINTER(aId);
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*aId = ImageResource::GetImageProducerId();
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return NS_OK;
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}
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LookupResult RasterImage::LookupFrameInternal(const UnorientedIntSize& aSize,
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uint32_t aFlags,
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PlaybackType aPlaybackType,
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bool aMarkUsed) {
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if (mAnimationState && aPlaybackType == PlaybackType::eAnimated) {
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MOZ_ASSERT(mFrameAnimator);
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MOZ_ASSERT(ToSurfaceFlags(aFlags) == DefaultSurfaceFlags(),
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"Can't composite frames with non-default surface flags");
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return mFrameAnimator->GetCompositedFrame(*mAnimationState, aMarkUsed);
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}
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SurfaceFlags surfaceFlags = ToSurfaceFlags(aFlags);
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// We don't want any substitution for sync decodes, and substitution would be
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// illegal when high quality downscaling is disabled, so we use
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// SurfaceCache::Lookup in this case.
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if ((aFlags & FLAG_SYNC_DECODE) || !(aFlags & FLAG_HIGH_QUALITY_SCALING)) {
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return SurfaceCache::Lookup(
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ImageKey(this),
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RasterSurfaceKey(aSize.ToUnknownSize(), surfaceFlags,
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PlaybackType::eStatic),
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aMarkUsed);
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}
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// We'll return the best match we can find to the requested frame.
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return SurfaceCache::LookupBestMatch(
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ImageKey(this),
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RasterSurfaceKey(aSize.ToUnknownSize(), surfaceFlags,
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PlaybackType::eStatic),
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aMarkUsed);
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}
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LookupResult RasterImage::LookupFrame(const UnorientedIntSize& aSize,
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uint32_t aFlags,
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PlaybackType aPlaybackType,
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bool aMarkUsed) {
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MOZ_ASSERT(NS_IsMainThread());
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// If we're opaque, we don't need to care about premultiplied alpha, because
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// that can only matter for frames with transparency.
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if (IsOpaque()) {
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aFlags &= ~FLAG_DECODE_NO_PREMULTIPLY_ALPHA;
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}
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UnorientedIntSize requestedSize =
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CanDownscaleDuringDecode(aSize, aFlags) ? aSize : ToUnoriented(mSize);
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if (requestedSize.IsEmpty()) {
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// Can't decode to a surface of zero size.
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return LookupResult(MatchType::NOT_FOUND);
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}
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LookupResult result =
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LookupFrameInternal(requestedSize, aFlags, aPlaybackType, aMarkUsed);
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if (!result && !mHasSize) {
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// We can't request a decode without knowing our intrinsic size. Give up.
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return LookupResult(MatchType::NOT_FOUND);
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}
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const bool syncDecode = aFlags & FLAG_SYNC_DECODE;
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const bool avoidRedecode = aFlags & FLAG_AVOID_REDECODE_FOR_SIZE;
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if (result.Type() == MatchType::NOT_FOUND ||
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(result.Type() == MatchType::SUBSTITUTE_BECAUSE_NOT_FOUND &&
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!avoidRedecode) ||
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(syncDecode && !avoidRedecode && !result)) {
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// We don't have a copy of this frame, and there's no decoder working on
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// one. (Or we're sync decoding and the existing decoder hasn't even started
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// yet.) Trigger decoding so it'll be available next time.
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MOZ_ASSERT(aPlaybackType != PlaybackType::eAnimated ||
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StaticPrefs::image_mem_animated_discardable_AtStartup() ||
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!mAnimationState || mAnimationState->KnownFrameCount() < 1,
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"Animated frames should be locked");
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// The surface cache may suggest the preferred size we are supposed to
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// decode at. This should only happen if we accept substitutions.
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if (!result.SuggestedSize().IsEmpty()) {
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MOZ_ASSERT(!syncDecode && (aFlags & FLAG_HIGH_QUALITY_SCALING));
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requestedSize =
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UnorientedIntSize::FromUnknownSize(result.SuggestedSize());
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}
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bool ranSync = false, failed = false;
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Decode(requestedSize, aFlags, aPlaybackType, ranSync, failed);
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if (failed) {
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result.SetFailedToRequestDecode();
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}
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// If we can or did sync decode, we should already have the frame.
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if (ranSync || syncDecode) {
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result =
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LookupFrameInternal(requestedSize, aFlags, aPlaybackType, aMarkUsed);
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}
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}
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if (!result) {
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// We still weren't able to get a frame. Give up.
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return result;
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}
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// Sync decoding guarantees that we got the frame, but if it's owned by an
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// async decoder that's currently running, the contents of the frame may not
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// be available yet. Make sure we get everything.
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if (mAllSourceData && syncDecode) {
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result.Surface()->WaitUntilFinished();
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}
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// If we could have done some decoding in this function we need to check if
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// that decoding encountered an error and hence aborted the surface. We want
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// to avoid calling IsAborted if we weren't passed any sync decode flag
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// because IsAborted acquires the monitor for the imgFrame.
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if (aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST) &&
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result.Surface()->IsAborted()) {
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DrawableSurface tmp = std::move(result.Surface());
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return result;
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}
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return result;
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}
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bool RasterImage::IsOpaque() {
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if (mError) {
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return false;
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}
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Progress progress = mProgressTracker->GetProgress();
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// If we haven't yet finished decoding, the safe answer is "not opaque".
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if (!(progress & FLAG_DECODE_COMPLETE)) {
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return false;
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}
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// Other, we're opaque if FLAG_HAS_TRANSPARENCY is not set.
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return !(progress & FLAG_HAS_TRANSPARENCY);
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}
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NS_IMETHODIMP_(bool)
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RasterImage::WillDrawOpaqueNow() {
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if (!IsOpaque()) {
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return false;
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}
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if (mAnimationState) {
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if (!StaticPrefs::image_mem_animated_discardable_AtStartup()) {
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// We never discard frames of animated images.
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return true;
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} else {
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if (mAnimationState->GetCompositedFrameInvalid()) {
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// We're not going to draw anything at all.
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return false;
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}
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}
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}
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// If we are not locked our decoded data could get discard at any time (ie
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// between the call to this function and when we are asked to draw), so we
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// have to return false if we are unlocked.
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if (mLockCount == 0) {
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return false;
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}
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auto size = ToUnoriented(mSize);
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LookupResult result = SurfaceCache::LookupBestMatch(
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ImageKey(this),
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RasterSurfaceKey(size.ToUnknownSize(), DefaultSurfaceFlags(),
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PlaybackType::eStatic),
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/* aMarkUsed = */ false);
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MatchType matchType = result.Type();
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if (matchType == MatchType::NOT_FOUND || matchType == MatchType::PENDING ||
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!result.Surface()->IsFinished()) {
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return false;
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}
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return true;
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}
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void RasterImage::OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey) {
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MOZ_ASSERT(mProgressTracker);
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bool animatedFramesDiscarded =
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mAnimationState && aSurfaceKey.Playback() == PlaybackType::eAnimated;
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nsCOMPtr<nsIEventTarget> eventTarget;
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if (mProgressTracker) {
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eventTarget = mProgressTracker->GetEventTarget();
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} else {
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eventTarget = do_GetMainThread();
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}
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RefPtr<RasterImage> image = this;
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nsCOMPtr<nsIRunnable> ev =
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NS_NewRunnableFunction("RasterImage::OnSurfaceDiscarded", [=]() -> void {
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image->OnSurfaceDiscardedInternal(animatedFramesDiscarded);
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});
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eventTarget->Dispatch(ev.forget(), NS_DISPATCH_NORMAL);
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}
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void RasterImage::OnSurfaceDiscardedInternal(bool aAnimatedFramesDiscarded) {
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MOZ_ASSERT(NS_IsMainThread());
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if (aAnimatedFramesDiscarded && mAnimationState) {
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MOZ_ASSERT(StaticPrefs::image_mem_animated_discardable_AtStartup());
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ReleaseImageContainer();
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auto size = ToUnoriented(mSize);
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IntRect rect = mAnimationState->UpdateState(this, size.ToUnknownSize());
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auto dirtyRect = UnorientedIntRect::FromUnknownRect(rect);
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NotifyProgress(NoProgress, dirtyRect);
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}
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if (mProgressTracker) {
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mProgressTracker->OnDiscard();
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}
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}
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//******************************************************************************
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NS_IMETHODIMP
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RasterImage::GetAnimated(bool* aAnimated) {
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if (mError) {
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return NS_ERROR_FAILURE;
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}
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NS_ENSURE_ARG_POINTER(aAnimated);
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// If we have an AnimationState, we can know for sure.
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if (mAnimationState) {
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*aAnimated = true;
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return NS_OK;
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}
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// Otherwise, we need to have been decoded to know for sure, since if we were
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// decoded at least once mAnimationState would have been created for animated
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// images. This is true even though we check for animation during the
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// metadata decode, because we may still discover animation only during the
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// full decode for corrupt images.
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if (!mHasBeenDecoded) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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// We know for sure
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*aAnimated = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(int32_t)
|
|
RasterImage::GetFirstFrameDelay() {
|
|
if (mError) {
|
|
return -1;
|
|
}
|
|
|
|
bool animated = false;
|
|
if (NS_FAILED(GetAnimated(&animated)) || !animated) {
|
|
return -1;
|
|
}
|
|
|
|
MOZ_ASSERT(mAnimationState, "Animated images should have an AnimationState");
|
|
return mAnimationState->FirstFrameTimeout().AsEncodedValueDeprecated();
|
|
}
|
|
|
|
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
|
|
RasterImage::GetFrame(uint32_t aWhichFrame, uint32_t aFlags) {
|
|
return GetFrameAtSize(mSize.ToUnknownSize(), aWhichFrame, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
|
|
RasterImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame,
|
|
uint32_t aFlags) {
|
|
#ifdef DEBUG
|
|
NotifyDrawingObservers();
|
|
#endif
|
|
|
|
auto result = GetFrameInternal(aSize, Nothing(), aWhichFrame, aFlags);
|
|
return mozilla::Get<2>(result).forget();
|
|
}
|
|
|
|
Tuple<ImgDrawResult, IntSize, RefPtr<SourceSurface>>
|
|
RasterImage::GetFrameInternal(const IntSize& aSize,
|
|
const Maybe<SVGImageContext>& aSVGContext,
|
|
uint32_t aWhichFrame, uint32_t aFlags) {
|
|
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE);
|
|
|
|
auto size = OrientedIntSize::FromUnknownSize(aSize);
|
|
|
|
if (aSize.IsEmpty() || aWhichFrame > FRAME_MAX_VALUE) {
|
|
return MakeTuple(ImgDrawResult::BAD_ARGS, aSize, RefPtr<SourceSurface>());
|
|
}
|
|
|
|
if (mError) {
|
|
return MakeTuple(ImgDrawResult::BAD_IMAGE, aSize, RefPtr<SourceSurface>());
|
|
}
|
|
|
|
// Get the frame. If it's not there, it's probably the caller's fault for
|
|
// not waiting for the data to be loaded from the network or not passing
|
|
// FLAG_SYNC_DECODE.
|
|
LookupResult result =
|
|
LookupFrame(ToUnoriented(size), aFlags, ToPlaybackType(aWhichFrame),
|
|
/* aMarkUsed = */ true);
|
|
auto resultSuggestedSize =
|
|
UnorientedIntSize::FromUnknownSize(result.SuggestedSize());
|
|
|
|
// The surface cache may have suggested we use a different size than the
|
|
// given size in the future. This may or may not be accompanied by an
|
|
// actual surface, depending on what it has in its cache.
|
|
OrientedIntSize suggestedSize = ToOriented(resultSuggestedSize);
|
|
if (suggestedSize.IsEmpty()) {
|
|
suggestedSize = size;
|
|
}
|
|
MOZ_ASSERT_IF(result.Type() == MatchType::SUBSTITUTE_BECAUSE_BEST,
|
|
suggestedSize != size);
|
|
|
|
if (!result) {
|
|
// The OS threw this frame away and we couldn't redecode it.
|
|
return MakeTuple(ImgDrawResult::TEMPORARY_ERROR,
|
|
suggestedSize.ToUnknownSize(), RefPtr<SourceSurface>());
|
|
}
|
|
|
|
RefPtr<SourceSurface> surface = result.Surface()->GetSourceSurface();
|
|
|
|
// If this RasterImage requires orientation, we must return a newly created
|
|
// surface with the oriented image instead of returning the frame's surface
|
|
// directly.
|
|
surface = OrientedImage::OrientSurface(UsedOrientation(), surface);
|
|
|
|
if (!result.Surface()->IsFinished()) {
|
|
return MakeTuple(ImgDrawResult::INCOMPLETE, suggestedSize.ToUnknownSize(),
|
|
std::move(surface));
|
|
}
|
|
|
|
return MakeTuple(ImgDrawResult::SUCCESS, suggestedSize.ToUnknownSize(),
|
|
std::move(surface));
|
|
}
|
|
|
|
Tuple<ImgDrawResult, IntSize> RasterImage::GetImageContainerSize(
|
|
LayerManager* aManager, const IntSize& aRequestedSize, uint32_t aFlags) {
|
|
if (!mHasSize) {
|
|
return MakeTuple(ImgDrawResult::NOT_READY, IntSize(0, 0));
|
|
}
|
|
|
|
if (aRequestedSize.IsEmpty()) {
|
|
return MakeTuple(ImgDrawResult::BAD_ARGS, IntSize(0, 0));
|
|
}
|
|
|
|
// We check the minimum size because while we support downscaling, we do not
|
|
// support upscaling. If aRequestedSize > mSize, we will never give a larger
|
|
// surface than mSize. If mSize > aRequestedSize, and mSize > maxTextureSize,
|
|
// we still want to use image containers if aRequestedSize <= maxTextureSize.
|
|
int32_t maxTextureSize = aManager->GetMaxTextureSize();
|
|
if (min(mSize.width, aRequestedSize.width) > maxTextureSize ||
|
|
min(mSize.height, aRequestedSize.height) > maxTextureSize) {
|
|
return MakeTuple(ImgDrawResult::NOT_SUPPORTED, IntSize(0, 0));
|
|
}
|
|
|
|
auto requestedSize = OrientedIntSize::FromUnknownSize(aRequestedSize);
|
|
if (!CanDownscaleDuringDecode(ToUnoriented(requestedSize), aFlags)) {
|
|
return MakeTuple(ImgDrawResult::SUCCESS, mSize.ToUnknownSize());
|
|
}
|
|
|
|
return MakeTuple(ImgDrawResult::SUCCESS, aRequestedSize);
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
RasterImage::IsImageContainerAvailable(LayerManager* aManager,
|
|
uint32_t aFlags) {
|
|
return IsImageContainerAvailableAtSize(aManager, mSize.ToUnknownSize(),
|
|
aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
|
|
RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags) {
|
|
RefPtr<ImageContainer> container;
|
|
ImgDrawResult drawResult =
|
|
GetImageContainerImpl(aManager, mSize.ToUnknownSize(), Nothing(), aFlags,
|
|
getter_AddRefs(container));
|
|
|
|
// We silence the unused warning here because anything that needs the draw
|
|
// result should be using GetImageContainerAtSize, not GetImageContainer.
|
|
(void)drawResult;
|
|
return container.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
RasterImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
|
|
const IntSize& aRequestedSize,
|
|
uint32_t aFlags) {
|
|
// We check the minimum size because while we support downscaling, we do not
|
|
// support upscaling. If aRequestedSize > mSize, we will never give a larger
|
|
// surface than mSize. If mSize > aRequestedSize, and mSize > maxTextureSize,
|
|
// we still want to use image containers if aRequestedSize <= maxTextureSize.
|
|
int32_t maxTextureSize = aManager->GetMaxTextureSize();
|
|
if (!mHasSize || aRequestedSize.IsEmpty() ||
|
|
min(mSize.width, aRequestedSize.width) > maxTextureSize ||
|
|
min(mSize.height, aRequestedSize.height) > maxTextureSize) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP_(ImgDrawResult)
|
|
RasterImage::GetImageContainerAtSize(layers::LayerManager* aManager,
|
|
const gfx::IntSize& aSize,
|
|
const Maybe<SVGImageContext>& aSVGContext,
|
|
uint32_t aFlags,
|
|
layers::ImageContainer** aOutContainer) {
|
|
// We do not pass in the given SVG context because in theory it could differ
|
|
// between calls, but actually have no impact on the actual contents of the
|
|
// image container.
|
|
return GetImageContainerImpl(aManager, aSize, Nothing(), aFlags,
|
|
aOutContainer);
|
|
}
|
|
|
|
size_t RasterImage::SizeOfSourceWithComputedFallback(
|
|
SizeOfState& aState) const {
|
|
return mSourceBuffer->SizeOfIncludingThisWithComputedFallback(
|
|
aState.mMallocSizeOf);
|
|
}
|
|
|
|
void RasterImage::CollectSizeOfSurfaces(
|
|
nsTArray<SurfaceMemoryCounter>& aCounters,
|
|
MallocSizeOf aMallocSizeOf) const {
|
|
SurfaceCache::CollectSizeOfSurfaces(ImageKey(this), aCounters, aMallocSizeOf);
|
|
}
|
|
|
|
bool RasterImage::SetMetadata(const ImageMetadata& aMetadata,
|
|
bool aFromMetadataDecode) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
return true;
|
|
}
|
|
|
|
if (aMetadata.HasSize()) {
|
|
auto metadataSize = UnorientedIntSize::FromUnknownSize(aMetadata.GetSize());
|
|
if (metadataSize.width < 0 || metadataSize.height < 0) {
|
|
NS_WARNING("Image has negative intrinsic size");
|
|
DoError();
|
|
return true;
|
|
}
|
|
|
|
MOZ_ASSERT(aMetadata.HasOrientation());
|
|
Orientation orientation = aMetadata.GetOrientation();
|
|
|
|
// If we already have a size, check the new size against the old one.
|
|
if (mHasSize &&
|
|
(metadataSize != ToUnoriented(mSize) || orientation != mOrientation)) {
|
|
NS_WARNING(
|
|
"Image changed size or orientation on redecode! "
|
|
"This should not happen!");
|
|
DoError();
|
|
return true;
|
|
}
|
|
|
|
// Set the size and flag that we have it.
|
|
mOrientation = orientation;
|
|
mSize = ToOriented(metadataSize);
|
|
mNativeSizes.Clear();
|
|
for (const auto& nativeSize : aMetadata.GetNativeSizes()) {
|
|
mNativeSizes.AppendElement(
|
|
ToOriented(UnorientedIntSize::FromUnknownSize(nativeSize)));
|
|
}
|
|
mHasSize = true;
|
|
}
|
|
|
|
if (mHasSize && aMetadata.HasAnimation() && !mAnimationState) {
|
|
// We're becoming animated, so initialize animation stuff.
|
|
mAnimationState.emplace(mAnimationMode);
|
|
mFrameAnimator =
|
|
MakeUnique<FrameAnimator>(this, ToUnoriented(mSize).ToUnknownSize());
|
|
|
|
if (!StaticPrefs::image_mem_animated_discardable_AtStartup()) {
|
|
// We don't support discarding animated images (See bug 414259).
|
|
// Lock the image and throw away the key.
|
|
LockImage();
|
|
}
|
|
|
|
if (!aFromMetadataDecode) {
|
|
// The metadata decode reported that this image isn't animated, but we
|
|
// discovered that it actually was during the full decode. This is a
|
|
// rare failure that only occurs for corrupt images. To recover, we need
|
|
// to discard all existing surfaces and redecode.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (mAnimationState) {
|
|
mAnimationState->SetLoopCount(aMetadata.GetLoopCount());
|
|
mAnimationState->SetFirstFrameTimeout(aMetadata.GetFirstFrameTimeout());
|
|
|
|
if (aMetadata.HasLoopLength()) {
|
|
mAnimationState->SetLoopLength(aMetadata.GetLoopLength());
|
|
}
|
|
if (aMetadata.HasFirstFrameRefreshArea()) {
|
|
mAnimationState->SetFirstFrameRefreshArea(
|
|
aMetadata.GetFirstFrameRefreshArea());
|
|
}
|
|
}
|
|
|
|
if (aMetadata.HasHotspot()) {
|
|
// NOTE(heycam): We shouldn't have any image formats that support both
|
|
// orientation and hotspots, so we assert that rather than add code
|
|
// to orient the hotspot point correctly.
|
|
MOZ_ASSERT(UsedOrientation().IsIdentity(),
|
|
"Would need to orient hotspot point");
|
|
|
|
auto hotspot = aMetadata.GetHotspot();
|
|
mHotspot.x = std::max(std::min(hotspot.x, mSize.width - 1), 0);
|
|
mHotspot.y = std::max(std::min(hotspot.y, mSize.height - 1), 0);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::SetAnimationMode(uint16_t aAnimationMode) {
|
|
if (mAnimationState) {
|
|
mAnimationState->SetAnimationMode(aAnimationMode);
|
|
}
|
|
return SetAnimationModeInternal(aAnimationMode);
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
nsresult RasterImage::StartAnimation() {
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
MOZ_ASSERT(ShouldAnimate(), "Should not animate!");
|
|
|
|
// If we're not ready to animate, then set mPendingAnimation, which will cause
|
|
// us to start animating if and when we do become ready.
|
|
mPendingAnimation =
|
|
!mAnimationState || mAnimationState->KnownFrameCount() < 1;
|
|
if (mPendingAnimation) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Don't bother to animate if we're displaying the first frame forever.
|
|
if (mAnimationState->GetCurrentAnimationFrameIndex() == 0 &&
|
|
mAnimationState->FirstFrameTimeout() == FrameTimeout::Forever()) {
|
|
mAnimationFinished = true;
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
// We need to set the time that this initial frame was first displayed, as
|
|
// this is used in AdvanceFrame().
|
|
mAnimationState->InitAnimationFrameTimeIfNecessary();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
nsresult RasterImage::StopAnimation() {
|
|
MOZ_ASSERT(mAnimating, "Should be animating!");
|
|
|
|
nsresult rv = NS_OK;
|
|
if (mError) {
|
|
rv = NS_ERROR_FAILURE;
|
|
} else {
|
|
mAnimationState->SetAnimationFrameTime(TimeStamp());
|
|
}
|
|
|
|
mAnimating = false;
|
|
return rv;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP
|
|
RasterImage::ResetAnimation() {
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mPendingAnimation = false;
|
|
|
|
if (mAnimationMode == kDontAnimMode || !mAnimationState ||
|
|
mAnimationState->GetCurrentAnimationFrameIndex() == 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mAnimationFinished = false;
|
|
|
|
if (mAnimating) {
|
|
StopAnimation();
|
|
}
|
|
|
|
MOZ_ASSERT(mAnimationState, "Should have AnimationState");
|
|
MOZ_ASSERT(mFrameAnimator, "Should have FrameAnimator");
|
|
mFrameAnimator->ResetAnimation(*mAnimationState);
|
|
|
|
IntRect area = mAnimationState->FirstFrameRefreshArea();
|
|
NotifyProgress(NoProgress, UnorientedIntRect::FromUnknownRect(area));
|
|
|
|
// Start the animation again. It may not have been running before, if
|
|
// mAnimationFinished was true before entering this function.
|
|
EvaluateAnimation();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(void)
|
|
RasterImage::SetAnimationStartTime(const TimeStamp& aTime) {
|
|
if (mError || mAnimationMode == kDontAnimMode || mAnimating ||
|
|
!mAnimationState) {
|
|
return;
|
|
}
|
|
|
|
mAnimationState->SetAnimationFrameTime(aTime);
|
|
}
|
|
|
|
NS_IMETHODIMP_(float)
|
|
RasterImage::GetFrameIndex(uint32_t aWhichFrame) {
|
|
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
|
|
return (aWhichFrame == FRAME_FIRST || !mAnimationState)
|
|
? 0.0f
|
|
: mAnimationState->GetCurrentAnimationFrameIndex();
|
|
}
|
|
|
|
NS_IMETHODIMP_(IntRect)
|
|
RasterImage::GetImageSpaceInvalidationRect(const IntRect& aRect) {
|
|
// Note that we do not transform aRect into an UnorientedIntRect, since
|
|
// RasterImage::NotifyProgress notifies all consumers of the image using
|
|
// OrientedIntRect values. (This is unlike OrientedImage, which notifies
|
|
// using inner image coordinates.)
|
|
return aRect;
|
|
}
|
|
|
|
nsresult RasterImage::OnImageDataComplete(nsIRequest*, nsISupports*,
|
|
nsresult aStatus, bool aLastPart) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
// Record that we have all the data we're going to get now.
|
|
mAllSourceData = true;
|
|
|
|
// Let decoders know that there won't be any more data coming.
|
|
mSourceBuffer->Complete(aStatus);
|
|
|
|
// Allow a synchronous metadata decode if mSyncLoad was set, or if we're
|
|
// running on a single thread (in which case waiting for the async metadata
|
|
// decoder could delay this image's load event quite a bit), or if this image
|
|
// is transient.
|
|
bool canSyncDecodeMetadata =
|
|
mSyncLoad || mTransient || DecodePool::NumberOfCores() < 2;
|
|
|
|
if (canSyncDecodeMetadata && !mHasSize) {
|
|
// We're loading this image synchronously, so it needs to be usable after
|
|
// this call returns. Since we haven't gotten our size yet, we need to do a
|
|
// synchronous metadata decode here.
|
|
DecodeMetadata(FLAG_SYNC_DECODE);
|
|
}
|
|
|
|
// Determine our final status, giving precedence to Necko failure codes. We
|
|
// check after running the metadata decode in case it triggered an error.
|
|
nsresult finalStatus = mError ? NS_ERROR_FAILURE : NS_OK;
|
|
if (NS_FAILED(aStatus)) {
|
|
finalStatus = aStatus;
|
|
}
|
|
|
|
// If loading failed, report an error.
|
|
if (NS_FAILED(finalStatus)) {
|
|
DoError();
|
|
}
|
|
|
|
Progress loadProgress = LoadCompleteProgress(aLastPart, mError, finalStatus);
|
|
|
|
if (!mHasSize && !mError) {
|
|
// We don't have our size yet, so we'll fire the load event in SetSize().
|
|
MOZ_ASSERT(!canSyncDecodeMetadata,
|
|
"Firing load async after metadata sync decode?");
|
|
mLoadProgress = Some(loadProgress);
|
|
return finalStatus;
|
|
}
|
|
|
|
NotifyForLoadEvent(loadProgress);
|
|
|
|
return finalStatus;
|
|
}
|
|
|
|
void RasterImage::NotifyForLoadEvent(Progress aProgress) {
|
|
MOZ_ASSERT(mHasSize || mError, "Need to know size before firing load event");
|
|
MOZ_ASSERT(
|
|
!mHasSize || (mProgressTracker->GetProgress() & FLAG_SIZE_AVAILABLE),
|
|
"Should have notified that the size is available if we have it");
|
|
|
|
// If we encountered an error, make sure we notify for that as well.
|
|
if (mError) {
|
|
aProgress |= FLAG_HAS_ERROR;
|
|
}
|
|
|
|
// Notify our listeners, which will fire this image's load event.
|
|
NotifyProgress(aProgress);
|
|
}
|
|
|
|
nsresult RasterImage::OnImageDataAvailable(nsIRequest*, nsISupports*,
|
|
nsIInputStream* aInputStream,
|
|
uint64_t, uint32_t aCount) {
|
|
nsresult rv = mSourceBuffer->AppendFromInputStream(aInputStream, aCount);
|
|
if (NS_SUCCEEDED(rv) && !mSomeSourceData) {
|
|
mSomeSourceData = true;
|
|
if (!mSyncLoad) {
|
|
// Create an async metadata decoder and verify we succeed in doing so.
|
|
rv = DecodeMetadata(DECODE_FLAGS_DEFAULT);
|
|
}
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
DoError();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult RasterImage::SetSourceSizeHint(uint32_t aSizeHint) {
|
|
if (aSizeHint == 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = mSourceBuffer->ExpectLength(aSizeHint);
|
|
if (rv == NS_ERROR_OUT_OF_MEMORY) {
|
|
// Flush memory, try to get some back, and try again.
|
|
rv = nsMemory::HeapMinimize(true);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = mSourceBuffer->ExpectLength(aSizeHint);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult RasterImage::GetHotspotX(int32_t* aX) {
|
|
*aX = mHotspot.x;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult RasterImage::GetHotspotY(int32_t* aY) {
|
|
*aY = mHotspot.y;
|
|
return NS_OK;
|
|
}
|
|
|
|
void RasterImage::Discard() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(CanDiscard(), "Asked to discard but can't");
|
|
MOZ_ASSERT(!mAnimationState ||
|
|
StaticPrefs::image_mem_animated_discardable_AtStartup(),
|
|
"Asked to discard for animated image");
|
|
|
|
// Delete all the decoded frames.
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
|
|
if (mAnimationState) {
|
|
ReleaseImageContainer();
|
|
|
|
auto size = ToUnoriented(mSize);
|
|
IntRect rect = mAnimationState->UpdateState(this, size.ToUnknownSize());
|
|
|
|
auto dirtyRect = UnorientedIntRect::FromUnknownRect(rect);
|
|
NotifyProgress(NoProgress, dirtyRect);
|
|
}
|
|
|
|
// Notify that we discarded.
|
|
if (mProgressTracker) {
|
|
mProgressTracker->OnDiscard();
|
|
}
|
|
}
|
|
|
|
bool RasterImage::CanDiscard() {
|
|
return mAllSourceData &&
|
|
// Can discard animated images if the pref is set
|
|
(!mAnimationState ||
|
|
StaticPrefs::image_mem_animated_discardable_AtStartup());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::StartDecoding(uint32_t aFlags, uint32_t aWhichFrame) {
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (!mHasSize) {
|
|
mWantFullDecode = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t flags = (aFlags & FLAG_ASYNC_NOTIFY) | FLAG_SYNC_DECODE_IF_FAST |
|
|
FLAG_HIGH_QUALITY_SCALING;
|
|
return RequestDecodeForSize(mSize.ToUnknownSize(), flags, aWhichFrame);
|
|
}
|
|
|
|
bool RasterImage::StartDecodingWithResult(uint32_t aFlags,
|
|
uint32_t aWhichFrame) {
|
|
if (mError) {
|
|
return false;
|
|
}
|
|
|
|
if (!mHasSize) {
|
|
mWantFullDecode = true;
|
|
return false;
|
|
}
|
|
|
|
uint32_t flags = (aFlags & FLAG_ASYNC_NOTIFY) | FLAG_SYNC_DECODE_IF_FAST |
|
|
FLAG_HIGH_QUALITY_SCALING;
|
|
LookupResult result =
|
|
RequestDecodeForSizeInternal(ToUnoriented(mSize), flags, aWhichFrame);
|
|
DrawableSurface surface = std::move(result.Surface());
|
|
return surface && surface->IsFinished();
|
|
}
|
|
|
|
imgIContainer::DecodeResult RasterImage::RequestDecodeWithResult(
|
|
uint32_t aFlags, uint32_t aWhichFrame) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
return imgIContainer::DECODE_REQUEST_FAILED;
|
|
}
|
|
|
|
uint32_t flags = aFlags | FLAG_ASYNC_NOTIFY;
|
|
LookupResult result =
|
|
RequestDecodeForSizeInternal(ToUnoriented(mSize), flags, aWhichFrame);
|
|
DrawableSurface surface = std::move(result.Surface());
|
|
if (surface && surface->IsFinished()) {
|
|
return imgIContainer::DECODE_SURFACE_AVAILABLE;
|
|
}
|
|
if (result.GetFailedToRequestDecode()) {
|
|
return imgIContainer::DECODE_REQUEST_FAILED;
|
|
}
|
|
return imgIContainer::DECODE_REQUESTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::RequestDecodeForSize(const IntSize& aSize, uint32_t aFlags,
|
|
uint32_t aWhichFrame) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
RequestDecodeForSizeInternal(
|
|
ToUnoriented(OrientedIntSize::FromUnknownSize(aSize)), aFlags,
|
|
aWhichFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
LookupResult RasterImage::RequestDecodeForSizeInternal(
|
|
const UnorientedIntSize& aSize, uint32_t aFlags, uint32_t aWhichFrame) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (aWhichFrame > FRAME_MAX_VALUE) {
|
|
return LookupResult(MatchType::NOT_FOUND);
|
|
}
|
|
|
|
if (mError) {
|
|
LookupResult result = LookupResult(MatchType::NOT_FOUND);
|
|
result.SetFailedToRequestDecode();
|
|
return result;
|
|
}
|
|
|
|
if (!mHasSize) {
|
|
mWantFullDecode = true;
|
|
return LookupResult(MatchType::NOT_FOUND);
|
|
}
|
|
|
|
// Decide whether to sync decode images we can decode quickly. Here we are
|
|
// explicitly trading off flashing for responsiveness in the case that we're
|
|
// redecoding an image (see bug 845147).
|
|
bool shouldSyncDecodeIfFast =
|
|
!mHasBeenDecoded && (aFlags & FLAG_SYNC_DECODE_IF_FAST);
|
|
|
|
uint32_t flags =
|
|
shouldSyncDecodeIfFast ? aFlags : aFlags & ~FLAG_SYNC_DECODE_IF_FAST;
|
|
|
|
// Perform a frame lookup, which will implicitly start decoding if needed.
|
|
return LookupFrame(aSize, flags, ToPlaybackType(aWhichFrame),
|
|
/* aMarkUsed = */ false);
|
|
}
|
|
|
|
static bool LaunchDecodingTask(IDecodingTask* aTask, RasterImage* aImage,
|
|
uint32_t aFlags, bool aHaveSourceData) {
|
|
if (aHaveSourceData) {
|
|
nsCString uri(aImage->GetURIString());
|
|
|
|
// If we have all the data, we can sync decode if requested.
|
|
if (aFlags & imgIContainer::FLAG_SYNC_DECODE) {
|
|
DecodePool::Singleton()->SyncRunIfPossible(aTask, uri);
|
|
return true;
|
|
}
|
|
|
|
if (aFlags & imgIContainer::FLAG_SYNC_DECODE_IF_FAST) {
|
|
return DecodePool::Singleton()->SyncRunIfPreferred(aTask, uri);
|
|
}
|
|
}
|
|
|
|
// Perform an async decode. We also take this path if we don't have all the
|
|
// source data yet, since sync decoding is impossible in that situation.
|
|
DecodePool::Singleton()->AsyncRun(aTask);
|
|
return false;
|
|
}
|
|
|
|
void RasterImage::Decode(const UnorientedIntSize& aSize, uint32_t aFlags,
|
|
PlaybackType aPlaybackType, bool& aOutRanSync,
|
|
bool& aOutFailed) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mError) {
|
|
aOutFailed = true;
|
|
return;
|
|
}
|
|
|
|
// If we don't have a size yet, we can't do any other decoding.
|
|
if (!mHasSize) {
|
|
mWantFullDecode = true;
|
|
return;
|
|
}
|
|
|
|
// We're about to decode again, which may mean that some of the previous sizes
|
|
// we've decoded at aren't useful anymore. We can allow them to expire from
|
|
// the cache by unlocking them here. When the decode finishes, it will send an
|
|
// invalidation that will cause all instances of this image to redraw. If this
|
|
// image is locked, any surfaces that are still useful will become locked
|
|
// again when LookupFrame touches them, and the remainder will eventually
|
|
// expire.
|
|
SurfaceCache::UnlockEntries(ImageKey(this));
|
|
|
|
// Determine which flags we need to decode this image with.
|
|
DecoderFlags decoderFlags = DefaultDecoderFlags();
|
|
if (aFlags & FLAG_ASYNC_NOTIFY) {
|
|
decoderFlags |= DecoderFlags::ASYNC_NOTIFY;
|
|
}
|
|
if (mTransient) {
|
|
decoderFlags |= DecoderFlags::IMAGE_IS_TRANSIENT;
|
|
}
|
|
if (mHasBeenDecoded) {
|
|
decoderFlags |= DecoderFlags::IS_REDECODE;
|
|
}
|
|
if ((aFlags & FLAG_SYNC_DECODE) || !(aFlags & FLAG_HIGH_QUALITY_SCALING)) {
|
|
// Used SurfaceCache::Lookup instead of SurfaceCache::LookupBestMatch. That
|
|
// means the caller can handle a differently sized surface to be returned
|
|
// at any point.
|
|
decoderFlags |= DecoderFlags::CANNOT_SUBSTITUTE;
|
|
}
|
|
|
|
SurfaceFlags surfaceFlags = ToSurfaceFlags(aFlags);
|
|
if (IsOpaque()) {
|
|
// If there's no transparency, it doesn't matter whether we premultiply
|
|
// alpha or not.
|
|
surfaceFlags &= ~SurfaceFlags::NO_PREMULTIPLY_ALPHA;
|
|
}
|
|
|
|
// Create a decoder.
|
|
RefPtr<IDecodingTask> task;
|
|
nsresult rv;
|
|
bool animated = mAnimationState && aPlaybackType == PlaybackType::eAnimated;
|
|
if (animated) {
|
|
size_t currentFrame = mAnimationState->GetCurrentAnimationFrameIndex();
|
|
rv = DecoderFactory::CreateAnimationDecoder(
|
|
mDecoderType, WrapNotNull(this), mSourceBuffer,
|
|
ToUnoriented(mSize).ToUnknownSize(), decoderFlags, surfaceFlags,
|
|
currentFrame, getter_AddRefs(task));
|
|
} else {
|
|
rv = DecoderFactory::CreateDecoder(
|
|
mDecoderType, WrapNotNull(this), mSourceBuffer,
|
|
ToUnoriented(mSize).ToUnknownSize(), aSize.ToUnknownSize(),
|
|
decoderFlags, surfaceFlags, getter_AddRefs(task));
|
|
}
|
|
|
|
if (rv == NS_ERROR_ALREADY_INITIALIZED) {
|
|
// We raced with an already pending decoder, and it finished before we
|
|
// managed to insert the new decoder. Pretend we did a sync call to make
|
|
// the caller lookup in the surface cache again.
|
|
MOZ_ASSERT(!task);
|
|
aOutRanSync = true;
|
|
return;
|
|
}
|
|
|
|
if (animated) {
|
|
// We pass false for aAllowInvalidation because we may be asked to use
|
|
// async notifications. Any potential invalidation here will be sent when
|
|
// RequestRefresh is called, or NotifyDecodeComplete.
|
|
#ifdef DEBUG
|
|
IntRect rect =
|
|
#endif
|
|
mAnimationState->UpdateState(this, ToUnoriented(mSize).ToUnknownSize(),
|
|
false);
|
|
MOZ_ASSERT(rect.IsEmpty());
|
|
}
|
|
|
|
// Make sure DecoderFactory was able to create a decoder successfully.
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ASSERT(!task);
|
|
aOutFailed = true;
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(task);
|
|
mDecodeCount++;
|
|
|
|
// We're ready to decode; start the decoder.
|
|
aOutRanSync = LaunchDecodingTask(task, this, aFlags, mAllSourceData);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::DecodeMetadata(uint32_t aFlags) {
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
MOZ_ASSERT(!mHasSize, "Should not do unnecessary metadata decodes");
|
|
|
|
// Create a decoder.
|
|
RefPtr<IDecodingTask> task = DecoderFactory::CreateMetadataDecoder(
|
|
mDecoderType, WrapNotNull(this), mSourceBuffer);
|
|
|
|
// Make sure DecoderFactory was able to create a decoder successfully.
|
|
if (!task) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// We're ready to decode; start the decoder.
|
|
LaunchDecodingTask(task, this, aFlags, mAllSourceData);
|
|
return NS_OK;
|
|
}
|
|
|
|
void RasterImage::RecoverFromInvalidFrames(const UnorientedIntSize& aSize,
|
|
uint32_t aFlags) {
|
|
if (!mHasSize) {
|
|
return;
|
|
}
|
|
|
|
NS_WARNING("A RasterImage's frames became invalid. Attempting to recover...");
|
|
|
|
// Discard all existing frames, since they're probably all now invalid.
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
|
|
// Relock the image if it's supposed to be locked.
|
|
if (mLockCount > 0) {
|
|
SurfaceCache::LockImage(ImageKey(this));
|
|
}
|
|
|
|
bool unused1, unused2;
|
|
|
|
// Animated images require some special handling, because we normally require
|
|
// that they never be discarded.
|
|
if (mAnimationState) {
|
|
Decode(ToUnoriented(mSize), aFlags | FLAG_SYNC_DECODE,
|
|
PlaybackType::eAnimated, unused1, unused2);
|
|
ResetAnimation();
|
|
return;
|
|
}
|
|
|
|
// For non-animated images, it's fine to recover using an async decode.
|
|
Decode(aSize, aFlags, PlaybackType::eStatic, unused1, unused2);
|
|
}
|
|
|
|
static bool HaveSkia() {
|
|
#ifdef MOZ_ENABLE_SKIA
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
bool RasterImage::CanDownscaleDuringDecode(const UnorientedIntSize& aSize,
|
|
uint32_t aFlags) {
|
|
// Check basic requirements: downscale-during-decode is enabled, Skia is
|
|
// available, this image isn't transient, we have all the source data and know
|
|
// our size, and the flags allow us to do it.
|
|
if (!mHasSize || mTransient || !HaveSkia() ||
|
|
!StaticPrefs::image_downscale_during_decode_enabled() ||
|
|
!(aFlags & imgIContainer::FLAG_HIGH_QUALITY_SCALING)) {
|
|
return false;
|
|
}
|
|
|
|
// We don't downscale animated images during decode.
|
|
if (mAnimationState) {
|
|
return false;
|
|
}
|
|
|
|
// Never upscale.
|
|
UnorientedIntSize ourSize = ToUnoriented(mSize);
|
|
if (aSize.width >= ourSize.width || aSize.height >= ourSize.height) {
|
|
return false;
|
|
}
|
|
|
|
// Zero or negative width or height is unacceptable.
|
|
if (aSize.width < 1 || aSize.height < 1) {
|
|
return false;
|
|
}
|
|
|
|
// There's no point in scaling if we can't store the result.
|
|
if (!SurfaceCache::CanHold(aSize.ToUnknownSize())) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
ImgDrawResult RasterImage::DrawInternal(DrawableSurface&& aSurface,
|
|
gfxContext* aContext,
|
|
const UnorientedIntSize& aSize,
|
|
const ImageRegion& aRegion,
|
|
SamplingFilter aSamplingFilter,
|
|
uint32_t aFlags, float aOpacity) {
|
|
gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
|
|
ImageRegion region(aRegion);
|
|
bool frameIsFinished = aSurface->IsFinished();
|
|
|
|
#ifdef DEBUG
|
|
NotifyDrawingObservers();
|
|
#endif
|
|
|
|
// By now we may have a frame with the requested size. If not, we need to
|
|
// adjust the drawing parameters accordingly.
|
|
IntSize finalSize = aSurface->GetSize();
|
|
bool couldRedecodeForBetterFrame = false;
|
|
if (finalSize != aSize.ToUnknownSize()) {
|
|
gfx::Size scale(double(aSize.width) / finalSize.width,
|
|
double(aSize.height) / finalSize.height);
|
|
aContext->Multiply(gfxMatrix::Scaling(scale.width, scale.height));
|
|
region.Scale(1.0 / scale.width, 1.0 / scale.height);
|
|
|
|
couldRedecodeForBetterFrame = CanDownscaleDuringDecode(aSize, aFlags);
|
|
}
|
|
|
|
if (!aSurface->Draw(aContext, region, aSamplingFilter, aFlags, aOpacity)) {
|
|
RecoverFromInvalidFrames(aSize, aFlags);
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
if (!frameIsFinished) {
|
|
return ImgDrawResult::INCOMPLETE;
|
|
}
|
|
if (couldRedecodeForBetterFrame) {
|
|
return ImgDrawResult::WRONG_SIZE;
|
|
}
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
//******************************************************************************
|
|
NS_IMETHODIMP_(ImgDrawResult)
|
|
RasterImage::Draw(gfxContext* aContext, const IntSize& aSize,
|
|
const ImageRegion& aRegion, uint32_t aWhichFrame,
|
|
SamplingFilter aSamplingFilter,
|
|
const Maybe<SVGImageContext>& /*aSVGContext - ignored*/,
|
|
uint32_t aFlags, float aOpacity) {
|
|
if (aWhichFrame > FRAME_MAX_VALUE) {
|
|
return ImgDrawResult::BAD_ARGS;
|
|
}
|
|
|
|
if (mError) {
|
|
return ImgDrawResult::BAD_IMAGE;
|
|
}
|
|
|
|
// Illegal -- you can't draw with non-default decode flags.
|
|
// (Disabling colorspace conversion might make sense to allow, but
|
|
// we don't currently.)
|
|
if (ToSurfaceFlags(aFlags) != DefaultSurfaceFlags()) {
|
|
return ImgDrawResult::BAD_ARGS;
|
|
}
|
|
|
|
if (!aContext) {
|
|
return ImgDrawResult::BAD_ARGS;
|
|
}
|
|
|
|
if (mAnimationConsumers == 0) {
|
|
SendOnUnlockedDraw(aFlags);
|
|
}
|
|
|
|
// If we're not using SamplingFilter::GOOD, we shouldn't high-quality scale or
|
|
// downscale during decode.
|
|
uint32_t flags = aSamplingFilter == SamplingFilter::GOOD
|
|
? aFlags
|
|
: aFlags & ~FLAG_HIGH_QUALITY_SCALING;
|
|
|
|
auto size = ToUnoriented(OrientedIntSize::FromUnknownSize(aSize));
|
|
LookupResult result = LookupFrame(size, flags, ToPlaybackType(aWhichFrame),
|
|
/* aMarkUsed = */ true);
|
|
if (!result) {
|
|
// Getting the frame (above) touches the image and kicks off decoding.
|
|
if (mDrawStartTime.IsNull()) {
|
|
mDrawStartTime = TimeStamp::Now();
|
|
}
|
|
return ImgDrawResult::NOT_READY;
|
|
}
|
|
|
|
bool shouldRecordTelemetry =
|
|
!mDrawStartTime.IsNull() && result.Surface()->IsFinished();
|
|
|
|
ImgDrawResult drawResult;
|
|
{
|
|
gfxContextMatrixAutoSaveRestore asr;
|
|
ImageRegion region(aRegion);
|
|
|
|
if (!UsedOrientation().IsIdentity()) {
|
|
// Apply a transform so that the unoriented image is drawn in the
|
|
// orientation expected by the caller.
|
|
gfxMatrix matrix = OrientationMatrix(size);
|
|
asr.SetContext(aContext);
|
|
aContext->Multiply(matrix);
|
|
|
|
// Convert the region to unoriented coordinates.
|
|
gfxMatrix inverseMatrix = OrientationMatrix(size, /* aInvert = */ true);
|
|
region.TransformBoundsBy(inverseMatrix);
|
|
}
|
|
|
|
drawResult = DrawInternal(std::move(result.Surface()), aContext, size,
|
|
region, aSamplingFilter, flags, aOpacity);
|
|
}
|
|
|
|
if (shouldRecordTelemetry) {
|
|
TimeDuration drawLatency = TimeStamp::Now() - mDrawStartTime;
|
|
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_ON_DRAW_LATENCY,
|
|
int32_t(drawLatency.ToMicroseconds()));
|
|
mDrawStartTime = TimeStamp();
|
|
}
|
|
|
|
return drawResult;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::LockImage() {
|
|
MOZ_ASSERT(NS_IsMainThread(),
|
|
"Main thread to encourage serialization with UnlockImage");
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Increment the lock count
|
|
mLockCount++;
|
|
|
|
// Lock this image's surfaces in the SurfaceCache.
|
|
if (mLockCount == 1) {
|
|
SurfaceCache::LockImage(ImageKey(this));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::UnlockImage() {
|
|
MOZ_ASSERT(NS_IsMainThread(),
|
|
"Main thread to encourage serialization with LockImage");
|
|
if (mError) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// It's an error to call this function if the lock count is 0
|
|
MOZ_ASSERT(mLockCount > 0, "Calling UnlockImage with mLockCount == 0!");
|
|
if (mLockCount == 0) {
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
// Decrement our lock count
|
|
mLockCount--;
|
|
|
|
// Unlock this image's surfaces in the SurfaceCache.
|
|
if (mLockCount == 0) {
|
|
SurfaceCache::UnlockImage(ImageKey(this));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//******************************************************************************
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::RequestDiscard() {
|
|
if (mDiscardable && // Enabled at creation time...
|
|
mLockCount == 0 && // ...not temporarily disabled...
|
|
CanDiscard()) {
|
|
Discard();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Idempotent error flagging routine. If a decoder is open, shuts it down.
|
|
void RasterImage::DoError() {
|
|
// If we've flagged an error before, we have nothing to do
|
|
if (mError) {
|
|
return;
|
|
}
|
|
|
|
// We can't safely handle errors off-main-thread, so dispatch a worker to
|
|
// do it.
|
|
if (!NS_IsMainThread()) {
|
|
HandleErrorWorker::DispatchIfNeeded(this);
|
|
return;
|
|
}
|
|
|
|
// Put the container in an error state.
|
|
mError = true;
|
|
|
|
// Stop animation and release our FrameAnimator.
|
|
if (mAnimating) {
|
|
StopAnimation();
|
|
}
|
|
mAnimationState = Nothing();
|
|
mFrameAnimator = nullptr;
|
|
|
|
// Release all locks.
|
|
mLockCount = 0;
|
|
SurfaceCache::UnlockImage(ImageKey(this));
|
|
|
|
// Release all frames from the surface cache.
|
|
SurfaceCache::RemoveImage(ImageKey(this));
|
|
|
|
// Invalidate to get rid of any partially-drawn image content.
|
|
auto dirtyRect = UnorientedIntRect({0, 0}, ToUnoriented(mSize));
|
|
NotifyProgress(NoProgress, dirtyRect);
|
|
|
|
MOZ_LOG(gImgLog, LogLevel::Error,
|
|
("RasterImage: [this=%p] Error detected for image\n", this));
|
|
}
|
|
|
|
/* static */
|
|
void RasterImage::HandleErrorWorker::DispatchIfNeeded(RasterImage* aImage) {
|
|
RefPtr<HandleErrorWorker> worker = new HandleErrorWorker(aImage);
|
|
NS_DispatchToMainThread(worker);
|
|
}
|
|
|
|
RasterImage::HandleErrorWorker::HandleErrorWorker(RasterImage* aImage)
|
|
: Runnable("image::RasterImage::HandleErrorWorker"), mImage(aImage) {
|
|
MOZ_ASSERT(mImage, "Should have image");
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RasterImage::HandleErrorWorker::Run() {
|
|
mImage->DoError();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool RasterImage::ShouldAnimate() {
|
|
return ImageResource::ShouldAnimate() && mAnimationState &&
|
|
mAnimationState->KnownFrameCount() >= 1 && !mAnimationFinished;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
RasterImage::GetFramesNotified(uint32_t* aFramesNotified) {
|
|
NS_ENSURE_ARG_POINTER(aFramesNotified);
|
|
|
|
*aFramesNotified = mFramesNotified;
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
void RasterImage::NotifyProgress(
|
|
Progress aProgress,
|
|
const UnorientedIntRect& aInvalidRect /* = UnorientedIntRect() */,
|
|
const Maybe<uint32_t>& aFrameCount /* = Nothing() */,
|
|
DecoderFlags aDecoderFlags /* = DefaultDecoderFlags() */,
|
|
SurfaceFlags aSurfaceFlags /* = DefaultSurfaceFlags() */) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
// Ensure that we stay alive long enough to finish notifying.
|
|
RefPtr<RasterImage> image = this;
|
|
|
|
const bool wasDefaultFlags = aSurfaceFlags == DefaultSurfaceFlags();
|
|
|
|
auto invalidRect = ToOriented(aInvalidRect);
|
|
|
|
if (!invalidRect.IsEmpty() && wasDefaultFlags) {
|
|
// Update our image container since we're invalidating.
|
|
UpdateImageContainer(Some(invalidRect.ToUnknownRect()));
|
|
}
|
|
|
|
if (!(aDecoderFlags & DecoderFlags::FIRST_FRAME_ONLY)) {
|
|
// We may have decoded new animation frames; update our animation state.
|
|
MOZ_ASSERT_IF(aFrameCount && *aFrameCount > 1, mAnimationState || mError);
|
|
if (mAnimationState && aFrameCount) {
|
|
mAnimationState->UpdateKnownFrameCount(*aFrameCount);
|
|
}
|
|
|
|
// If we should start animating right now, do so.
|
|
if (mAnimationState && aFrameCount == Some(1u) && mPendingAnimation &&
|
|
ShouldAnimate()) {
|
|
StartAnimation();
|
|
}
|
|
}
|
|
|
|
// Tell the observers what happened.
|
|
image->mProgressTracker->SyncNotifyProgress(aProgress,
|
|
invalidRect.ToUnknownRect());
|
|
}
|
|
|
|
void RasterImage::NotifyDecodeComplete(
|
|
const DecoderFinalStatus& aStatus, const ImageMetadata& aMetadata,
|
|
const DecoderTelemetry& aTelemetry, Progress aProgress,
|
|
const UnorientedIntRect& aInvalidRect, const Maybe<uint32_t>& aFrameCount,
|
|
DecoderFlags aDecoderFlags, SurfaceFlags aSurfaceFlags) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
// If the decoder detected an error, log it to the error console.
|
|
if (aStatus.mShouldReportError) {
|
|
ReportDecoderError();
|
|
}
|
|
|
|
// Record all the metadata the decoder gathered about this image.
|
|
bool metadataOK = SetMetadata(aMetadata, aStatus.mWasMetadataDecode);
|
|
if (!metadataOK) {
|
|
// This indicates a serious error that requires us to discard all existing
|
|
// surfaces and redecode to recover. We'll drop the results from this
|
|
// decoder on the floor, since they aren't valid.
|
|
RecoverFromInvalidFrames(ToUnoriented(mSize),
|
|
FromSurfaceFlags(aSurfaceFlags));
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mError || mHasSize || !aMetadata.HasSize(),
|
|
"SetMetadata should've gotten a size");
|
|
|
|
if (!aStatus.mWasMetadataDecode && aStatus.mFinished) {
|
|
// Flag that we've been decoded before.
|
|
mHasBeenDecoded = true;
|
|
}
|
|
|
|
// Send out any final notifications.
|
|
NotifyProgress(aProgress, aInvalidRect, aFrameCount, aDecoderFlags,
|
|
aSurfaceFlags);
|
|
|
|
if (!(aDecoderFlags & DecoderFlags::FIRST_FRAME_ONLY) && mHasBeenDecoded &&
|
|
mAnimationState) {
|
|
// We've finished a full decode of all animation frames and our
|
|
// AnimationState has been notified about them all, so let it know not to
|
|
// expect anymore.
|
|
mAnimationState->NotifyDecodeComplete();
|
|
|
|
auto size = ToUnoriented(mSize);
|
|
IntRect rect = mAnimationState->UpdateState(this, size.ToUnknownSize());
|
|
|
|
if (!rect.IsEmpty()) {
|
|
auto dirtyRect = UnorientedIntRect::FromUnknownRect(rect);
|
|
NotifyProgress(NoProgress, dirtyRect);
|
|
}
|
|
}
|
|
|
|
// Do some telemetry if this isn't a metadata decode.
|
|
if (!aStatus.mWasMetadataDecode) {
|
|
if (aTelemetry.mChunkCount) {
|
|
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_CHUNKS,
|
|
aTelemetry.mChunkCount);
|
|
}
|
|
|
|
if (aStatus.mFinished) {
|
|
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_TIME,
|
|
int32_t(aTelemetry.mDecodeTime.ToMicroseconds()));
|
|
|
|
if (aTelemetry.mSpeedHistogram && aTelemetry.mBytesDecoded) {
|
|
Telemetry::Accumulate(*aTelemetry.mSpeedHistogram, aTelemetry.Speed());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Only act on errors if we have no usable frames from the decoder.
|
|
if (aStatus.mHadError &&
|
|
(!mAnimationState || mAnimationState->KnownFrameCount() == 0)) {
|
|
DoError();
|
|
} else if (aStatus.mWasMetadataDecode && !mHasSize) {
|
|
DoError();
|
|
}
|
|
|
|
// XXX(aosmond): Can we get this far without mFinished == true?
|
|
if (aStatus.mFinished && aStatus.mWasMetadataDecode) {
|
|
// If we were waiting to fire the load event, go ahead and fire it now.
|
|
if (mLoadProgress) {
|
|
NotifyForLoadEvent(*mLoadProgress);
|
|
mLoadProgress = Nothing();
|
|
}
|
|
|
|
// If we were a metadata decode and a full decode was requested, do it.
|
|
if (mWantFullDecode) {
|
|
mWantFullDecode = false;
|
|
RequestDecodeForSize(mSize.ToUnknownSize(),
|
|
DECODE_FLAGS_DEFAULT | FLAG_HIGH_QUALITY_SCALING,
|
|
FRAME_CURRENT);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RasterImage::ReportDecoderError() {
|
|
nsCOMPtr<nsIConsoleService> consoleService =
|
|
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
|
|
nsCOMPtr<nsIScriptError> errorObject =
|
|
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);
|
|
|
|
if (consoleService && errorObject) {
|
|
nsAutoString msg(NS_LITERAL_STRING("Image corrupt or truncated."));
|
|
nsAutoString src;
|
|
if (GetURI()) {
|
|
nsAutoCString uri;
|
|
if (!GetSpecTruncatedTo1k(uri)) {
|
|
msg += NS_LITERAL_STRING(" URI in this note truncated due to length.");
|
|
}
|
|
src = NS_ConvertUTF8toUTF16(uri);
|
|
}
|
|
if (NS_SUCCEEDED(errorObject->InitWithWindowID(msg, src, EmptyString(), 0,
|
|
0, nsIScriptError::errorFlag,
|
|
"Image", InnerWindowID()))) {
|
|
consoleService->LogMessage(errorObject);
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<imgIContainer> RasterImage::Unwrap() {
|
|
nsCOMPtr<imgIContainer> self(this);
|
|
return self.forget();
|
|
}
|
|
|
|
void RasterImage::PropagateUseCounters(dom::Document*) {
|
|
// No use counters.
|
|
}
|
|
|
|
IntSize RasterImage::OptimalImageSizeForDest(const gfxSize& aDest,
|
|
uint32_t aWhichFrame,
|
|
SamplingFilter aSamplingFilter,
|
|
uint32_t aFlags) {
|
|
MOZ_ASSERT(aDest.width >= 0 || ceil(aDest.width) <= INT32_MAX ||
|
|
aDest.height >= 0 || ceil(aDest.height) <= INT32_MAX,
|
|
"Unexpected destination size");
|
|
|
|
if (mSize.IsEmpty() || aDest.IsEmpty()) {
|
|
return IntSize(0, 0);
|
|
}
|
|
|
|
auto dest = OrientedIntSize::FromUnknownSize(
|
|
IntSize::Ceil(aDest.width, aDest.height));
|
|
|
|
if (aSamplingFilter == SamplingFilter::GOOD &&
|
|
CanDownscaleDuringDecode(ToUnoriented(dest), aFlags)) {
|
|
return dest.ToUnknownSize();
|
|
}
|
|
|
|
// We can't scale to this size. Use our intrinsic size for now.
|
|
return mSize.ToUnknownSize();
|
|
}
|
|
|
|
gfxMatrix RasterImage::OrientationMatrix(const UnorientedIntSize& aSize,
|
|
bool aInvert) const {
|
|
return OrientedImage::OrientationMatrix(UsedOrientation(),
|
|
aSize.ToUnknownSize(), aInvert);
|
|
}
|
|
|
|
/**
|
|
* Rotate aRect by the given angle within the space specified by aSize.
|
|
*
|
|
* For example, with aRect = [20, 10, 5, 5] and aSize = [100, 100], rotating
|
|
* with Angle::D90 will result in aRect = [85, 20, 5, 5].
|
|
*/
|
|
static void Rotate(IntRect& aRect, const IntSize& aSize, Angle aAngle) {
|
|
switch (aAngle) {
|
|
case Angle::D0:
|
|
break;
|
|
case Angle::D90:
|
|
aRect = {aSize.height - aRect.YMost(), aRect.x, aRect.height,
|
|
aRect.width};
|
|
break;
|
|
case Angle::D180:
|
|
aRect.MoveTo(aSize.width - aRect.XMost(), aSize.height - aRect.YMost());
|
|
break;
|
|
case Angle::D270:
|
|
aRect = {aRect.y, aSize.width - aRect.XMost(), aRect.height, aRect.width};
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Flip aRect along the central axis within aSize.
|
|
*
|
|
* For example, with aRect = [20, 10, 5, 5] and aSize = [100, 100], flipping
|
|
* with Flip::Horizontal will result in aRect = [75, 10, 5, 5].
|
|
*/
|
|
static void Flip(IntRect& aRect, const IntSize& aSize, Flip aFlip) {
|
|
switch (aFlip) {
|
|
case Flip::Unflipped:
|
|
break;
|
|
case Flip::Horizontal:
|
|
aRect.x = aSize.width - aRect.XMost();
|
|
break;
|
|
}
|
|
}
|
|
|
|
OrientedIntRect RasterImage::ToOriented(UnorientedIntRect aRect) const {
|
|
IntRect rect = aRect.ToUnknownRect();
|
|
auto size = ToUnoriented(mSize);
|
|
|
|
MOZ_ASSERT(!UsedOrientation().flipFirst,
|
|
"flipFirst should only be used by OrientedImage");
|
|
|
|
// UsedOrientation() specifies the transformation from a correctly oriented
|
|
// image to the pixels stored in the file, so we need to rotate by the
|
|
// negation of the given angle.
|
|
Angle angle = Orientation::InvertAngle(UsedOrientation().rotation);
|
|
Rotate(rect, size.ToUnknownSize(), angle);
|
|
Flip(rect, size.ToUnknownSize(), UsedOrientation().flip);
|
|
|
|
return OrientedIntRect::FromUnknownRect(rect);
|
|
}
|
|
|
|
UnorientedIntRect RasterImage::ToUnoriented(OrientedIntRect aRect) const {
|
|
IntRect rect = aRect.ToUnknownRect();
|
|
|
|
Flip(rect, mSize.ToUnknownSize(), UsedOrientation().flip);
|
|
Rotate(rect, mSize.ToUnknownSize(), UsedOrientation().rotation);
|
|
|
|
MOZ_ASSERT(!UsedOrientation().flipFirst,
|
|
"flipFirst should only be used by OrientedImage");
|
|
|
|
return UnorientedIntRect::FromUnknownRect(rect);
|
|
}
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|