/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ // Must #include ImageLogging.h before any IPDL-generated files or other files // that #include prlog.h #include "ImageLogging.h" #include "RasterImage.h" #include "gfxPlatform.h" #include "nsComponentManagerUtils.h" #include "nsError.h" #include "Decoder.h" #include "prenv.h" #include "prsystem.h" #include "IDecodingTask.h" #include "ImageContainer.h" #include "ImageRegion.h" #include "Layers.h" #include "LookupResult.h" #include "nsIConsoleService.h" #include "nsIInputStream.h" #include "nsIScriptError.h" #include "nsISupportsPrimitives.h" #include "nsPresContext.h" #include "SourceBuffer.h" #include "SurfaceCache.h" #include "FrameAnimator.h" #include "gfxContext.h" #include "mozilla/gfx/2D.h" #include "mozilla/DebugOnly.h" #include "mozilla/Likely.h" #include "mozilla/RefPtr.h" #include "mozilla/Move.h" #include "mozilla/MemoryReporting.h" #include "mozilla/Services.h" #include <stdint.h> #include "mozilla/TimeStamp.h" #include "mozilla/Telemetry.h" #include "mozilla/Tuple.h" #include "mozilla/ClearOnShutdown.h" #include "mozilla/gfx/Scale.h" #include "GeckoProfiler.h" #include "gfx2DGlue.h" #include "gfxPrefs.h" #include <algorithm> namespace mozilla { using namespace gfx; using namespace layers; namespace image { using std::ceil; using std::min; #ifndef DEBUG NS_IMPL_ISUPPORTS(RasterImage, imgIContainer, nsIProperties) #else NS_IMPL_ISUPPORTS(RasterImage, imgIContainer, nsIProperties, imgIContainerDebug) #endif //****************************************************************************** RasterImage::RasterImage(ImageURL* aURI /* = nullptr */) : ImageResource(aURI), // invoke superclass's constructor mSize(0,0), mLockCount(0), mDecodeCount(0), mRequestedSampleSize(0), mImageProducerID(ImageContainer::AllocateProducerID()), mLastFrameID(0), mLastImageContainerDrawResult(DrawResult::NOT_READY), #ifdef DEBUG mFramesNotified(0), #endif mSourceBuffer(WrapNotNull(new SourceBuffer())), mHasSize(false), mTransient(false), mSyncLoad(false), mDiscardable(false), mHasSourceData(false), mHasBeenDecoded(false), mPendingAnimation(false), mAnimationFinished(false), mWantFullDecode(false) { } //****************************************************************************** RasterImage::~RasterImage() { // Make sure our SourceBuffer is marked as complete. This will ensure that any // outstanding decoders terminate. if (!mSourceBuffer->IsComplete()) { mSourceBuffer->Complete(NS_ERROR_ABORT); } // Release all frames from the surface cache. SurfaceCache::RemoveImage(ImageKey(this)); } nsresult RasterImage::Init(const char* aMimeType, uint32_t aFlags) { // We don't support re-initialization if (mInitialized) { return NS_ERROR_ILLEGAL_VALUE; } // Not sure an error can happen before init, but be safe if (mError) { return NS_ERROR_FAILURE; } // We want to avoid redecodes for transient images. MOZ_ASSERT_IF(aFlags & INIT_FLAG_TRANSIENT, !(aFlags & INIT_FLAG_DISCARDABLE)); // Store initialization data mDiscardable = !!(aFlags & INIT_FLAG_DISCARDABLE); mWantFullDecode = !!(aFlags & INIT_FLAG_DECODE_IMMEDIATELY); mTransient = !!(aFlags & INIT_FLAG_TRANSIENT); mSyncLoad = !!(aFlags & INIT_FLAG_SYNC_LOAD); // Use the MIME type to select a decoder type, and make sure there *is* a // decoder for this MIME type. NS_ENSURE_ARG_POINTER(aMimeType); mDecoderType = DecoderFactory::GetDecoderType(aMimeType); if (mDecoderType == DecoderType::UNKNOWN) { return NS_ERROR_FAILURE; } // Lock this image's surfaces in the SurfaceCache if we're not discardable. if (!mDiscardable) { mLockCount++; SurfaceCache::LockImage(ImageKey(this)); } if (!mSyncLoad) { // Create an async metadata decoder and verify we succeed in doing so. nsresult rv = DecodeMetadata(DECODE_FLAGS_DEFAULT); if (NS_FAILED(rv)) { return NS_ERROR_FAILURE; } } // Mark us as initialized mInitialized = true; return NS_OK; } //****************************************************************************** NS_IMETHODIMP_(void) RasterImage::RequestRefresh(const TimeStamp& aTime) { if (HadRecentRefresh(aTime)) { return; } EvaluateAnimation(); if (!mAnimating) { return; } RefreshResult res; if (mAnimationState) { MOZ_ASSERT(mFrameAnimator); res = mFrameAnimator->RequestRefresh(*mAnimationState, aTime); } if (res.mFrameAdvanced) { // Notify listeners that our frame has actually changed, but do this only // once for all frames that we've now passed (if AdvanceFrame() was called // more than once). #ifdef DEBUG mFramesNotified++; #endif NotifyProgress(NoProgress, res.mDirtyRect); } if (res.mAnimationFinished) { mAnimationFinished = true; EvaluateAnimation(); } } //****************************************************************************** NS_IMETHODIMP RasterImage::GetWidth(int32_t* aWidth) { NS_ENSURE_ARG_POINTER(aWidth); if (mError) { *aWidth = 0; return NS_ERROR_FAILURE; } *aWidth = mSize.width; return NS_OK; } //****************************************************************************** NS_IMETHODIMP RasterImage::GetHeight(int32_t* aHeight) { NS_ENSURE_ARG_POINTER(aHeight); if (mError) { *aHeight = 0; return NS_ERROR_FAILURE; } *aHeight = mSize.height; return NS_OK; } //****************************************************************************** NS_IMETHODIMP RasterImage::GetIntrinsicSize(nsSize* aSize) { if (mError) { return NS_ERROR_FAILURE; } *aSize = nsSize(nsPresContext::CSSPixelsToAppUnits(mSize.width), nsPresContext::CSSPixelsToAppUnits(mSize.height)); return NS_OK; } //****************************************************************************** NS_IMETHODIMP RasterImage::GetIntrinsicRatio(nsSize* aRatio) { if (mError) { return NS_ERROR_FAILURE; } *aRatio = nsSize(mSize.width, mSize.height); return NS_OK; } NS_IMETHODIMP_(Orientation) RasterImage::GetOrientation() { return mOrientation; } //****************************************************************************** NS_IMETHODIMP RasterImage::GetType(uint16_t* aType) { NS_ENSURE_ARG_POINTER(aType); *aType = imgIContainer::TYPE_RASTER; return NS_OK; } LookupResult RasterImage::LookupFrameInternal(const IntSize& aSize, uint32_t aFlags, PlaybackType aPlaybackType) { if (mAnimationState && aPlaybackType == PlaybackType::eAnimated) { MOZ_ASSERT(mFrameAnimator); MOZ_ASSERT(ToSurfaceFlags(aFlags) == DefaultSurfaceFlags(), "Can't composite frames with non-default surface flags"); const size_t index = mAnimationState->GetCurrentAnimationFrameIndex(); return mFrameAnimator->GetCompositedFrame(index); } SurfaceFlags surfaceFlags = ToSurfaceFlags(aFlags); // We don't want any substitution for sync decodes, and substitution would be // illegal when high quality downscaling is disabled, so we use // SurfaceCache::Lookup in this case. if ((aFlags & FLAG_SYNC_DECODE) || !(aFlags & FLAG_HIGH_QUALITY_SCALING)) { return SurfaceCache::Lookup(ImageKey(this), RasterSurfaceKey(aSize, surfaceFlags, PlaybackType::eStatic)); } // We'll return the best match we can find to the requested frame. return SurfaceCache::LookupBestMatch(ImageKey(this), RasterSurfaceKey(aSize, surfaceFlags, PlaybackType::eStatic)); } DrawableSurface RasterImage::LookupFrame(const IntSize& aSize, uint32_t aFlags, PlaybackType aPlaybackType) { MOZ_ASSERT(NS_IsMainThread()); // If we're opaque, we don't need to care about premultiplied alpha, because // that can only matter for frames with transparency. if (IsOpaque()) { aFlags &= ~FLAG_DECODE_NO_PREMULTIPLY_ALPHA; } IntSize requestedSize = CanDownscaleDuringDecode(aSize, aFlags) ? aSize : mSize; if (requestedSize.IsEmpty()) { return DrawableSurface(); // Can't decode to a surface of zero size. } LookupResult result = LookupFrameInternal(requestedSize, aFlags, aPlaybackType); if (!result && !mHasSize) { // We can't request a decode without knowing our intrinsic size. Give up. return DrawableSurface(); } if (result.Type() == MatchType::NOT_FOUND || result.Type() == MatchType::SUBSTITUTE_BECAUSE_NOT_FOUND || ((aFlags & FLAG_SYNC_DECODE) && !result)) { // We don't have a copy of this frame, and there's no decoder working on // one. (Or we're sync decoding and the existing decoder hasn't even started // yet.) Trigger decoding so it'll be available next time. MOZ_ASSERT(aPlaybackType != PlaybackType::eAnimated || !mAnimationState || mAnimationState->KnownFrameCount() < 1, "Animated frames should be locked"); Decode(requestedSize, aFlags, aPlaybackType); // If we can sync decode, we should already have the frame. if (aFlags & FLAG_SYNC_DECODE) { result = LookupFrameInternal(requestedSize, aFlags, aPlaybackType); } } if (!result) { // We still weren't able to get a frame. Give up. return DrawableSurface(); } if (result.Surface()->GetCompositingFailed()) { return DrawableSurface(); } MOZ_ASSERT(!result.Surface()->GetIsPaletted(), "Should not have a paletted frame"); // Sync decoding guarantees that we got the frame, but if it's owned by an // async decoder that's currently running, the contents of the frame may not // be available yet. Make sure we get everything. if (mHasSourceData && (aFlags & FLAG_SYNC_DECODE)) { result.Surface()->WaitUntilFinished(); } // If we could have done some decoding in this function we need to check if // that decoding encountered an error and hence aborted the surface. We want // to avoid calling IsAborted if we weren't passed any sync decode flag because // IsAborted acquires the monitor for the imgFrame. if (aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST) && result.Surface()->IsAborted()) { return DrawableSurface(); } return Move(result.Surface()); } bool RasterImage::IsOpaque() { if (mError) { return false; } Progress progress = mProgressTracker->GetProgress(); // If we haven't yet finished decoding, the safe answer is "not opaque". if (!(progress & FLAG_DECODE_COMPLETE)) { return false; } // Other, we're opaque if FLAG_HAS_TRANSPARENCY is not set. return !(progress & FLAG_HAS_TRANSPARENCY); } NS_IMETHODIMP_(bool) RasterImage::WillDrawOpaqueNow() { if (!IsOpaque()) { return false; } if (mAnimationState) { // We never discard frames of animated images. return true; } // If we are not locked our decoded data could get discard at any time (ie // between the call to this function and when we are asked to draw), so we // have to return false if we are unlocked. if (IsUnlocked()) { return false; } LookupResult result = SurfaceCache::LookupBestMatch(ImageKey(this), RasterSurfaceKey(mSize, DefaultSurfaceFlags(), PlaybackType::eStatic)); MatchType matchType = result.Type(); if (matchType == MatchType::NOT_FOUND || matchType == MatchType::PENDING || !result.Surface()->IsFinished()) { return false; } return true; } void RasterImage::OnSurfaceDiscarded() { MOZ_ASSERT(mProgressTracker); NS_DispatchToMainThread(NewRunnableMethod(mProgressTracker, &ProgressTracker::OnDiscard)); } //****************************************************************************** NS_IMETHODIMP RasterImage::GetAnimated(bool* aAnimated) { if (mError) { return NS_ERROR_FAILURE; } NS_ENSURE_ARG_POINTER(aAnimated); // If we have an AnimationState, we can know for sure. if (mAnimationState) { *aAnimated = true; return NS_OK; } // Otherwise, we need to have been decoded to know for sure, since if we were // decoded at least once mAnimationState would have been created for animated // images. This is true even though we check for animation during the // metadata decode, because we may still discover animation only during the // full decode for corrupt images. if (!mHasBeenDecoded) { return NS_ERROR_NOT_AVAILABLE; } // We know for sure *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 GetFrameInternal(mSize, aWhichFrame, aFlags).second().forget(); } NS_IMETHODIMP_(already_AddRefed<SourceSurface>) RasterImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame, uint32_t aFlags) { return GetFrameInternal(aSize, aWhichFrame, aFlags).second().forget(); } Pair<DrawResult, RefPtr<SourceSurface>> RasterImage::GetFrameInternal(const IntSize& aSize, uint32_t aWhichFrame, uint32_t aFlags) { MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE); if (aSize.IsEmpty()) { return MakePair(DrawResult::BAD_ARGS, RefPtr<SourceSurface>()); } if (aWhichFrame > FRAME_MAX_VALUE) { return MakePair(DrawResult::BAD_ARGS, RefPtr<SourceSurface>()); } if (mError) { return MakePair(DrawResult::BAD_IMAGE, 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. DrawableSurface surface = LookupFrame(aSize, aFlags, ToPlaybackType(aWhichFrame)); if (!surface) { // The OS threw this frame away and we couldn't redecode it. return MakePair(DrawResult::TEMPORARY_ERROR, RefPtr<SourceSurface>()); } RefPtr<SourceSurface> sourceSurface = surface->GetSourceSurface(); if (!surface->IsFinished()) { return MakePair(DrawResult::INCOMPLETE, Move(sourceSurface)); } return MakePair(DrawResult::SUCCESS, Move(sourceSurface)); } Pair<DrawResult, RefPtr<layers::Image>> RasterImage::GetCurrentImage(ImageContainer* aContainer, uint32_t aFlags) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aContainer); DrawResult drawResult; RefPtr<SourceSurface> surface; Tie(drawResult, surface) = GetFrameInternal(mSize, FRAME_CURRENT, aFlags | FLAG_ASYNC_NOTIFY); if (!surface) { // The OS threw out some or all of our buffer. We'll need to wait for the // redecode (which was automatically triggered by GetFrame) to complete. return MakePair(drawResult, RefPtr<layers::Image>()); } RefPtr<layers::Image> image = new layers::SourceSurfaceImage(surface); return MakePair(drawResult, Move(image)); } NS_IMETHODIMP_(bool) RasterImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags) { int32_t maxTextureSize = aManager->GetMaxTextureSize(); if (!mHasSize || mSize.width > maxTextureSize || mSize.height > maxTextureSize) { return false; } return true; } NS_IMETHODIMP_(already_AddRefed<ImageContainer>) RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aManager); MOZ_ASSERT((aFlags & ~(FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST | FLAG_ASYNC_NOTIFY)) == FLAG_NONE, "Unsupported flag passed to GetImageContainer"); int32_t maxTextureSize = aManager->GetMaxTextureSize(); if (!mHasSize || mSize.width > maxTextureSize || mSize.height > maxTextureSize) { return nullptr; } if (IsUnlocked() && mProgressTracker) { mProgressTracker->OnUnlockedDraw(); } RefPtr<layers::ImageContainer> container = mImageContainer.get(); bool mustRedecode = (aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST)) && mLastImageContainerDrawResult != DrawResult::SUCCESS && mLastImageContainerDrawResult != DrawResult::BAD_IMAGE; if (container && !mustRedecode) { return container.forget(); } // We need a new ImageContainer, so create one. container = LayerManager::CreateImageContainer(); DrawResult drawResult; RefPtr<layers::Image> image; Tie(drawResult, image) = GetCurrentImage(container, aFlags); if (!image) { return nullptr; } // |image| holds a reference to a SourceSurface which in turn holds a lock on // the current frame's VolatileBuffer, ensuring that it doesn't get freed as // long as the layer system keeps this ImageContainer alive. AutoTArray<ImageContainer::NonOwningImage, 1> imageList; imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(), mLastFrameID++, mImageProducerID)); container->SetCurrentImagesInTransaction(imageList); mLastImageContainerDrawResult = drawResult; mImageContainer = container; return container.forget(); } void RasterImage::UpdateImageContainer() { MOZ_ASSERT(NS_IsMainThread()); RefPtr<layers::ImageContainer> container = mImageContainer.get(); if (!container) { return; } DrawResult drawResult; RefPtr<layers::Image> image; Tie(drawResult, image) = GetCurrentImage(container, FLAG_NONE); if (!image) { return; } mLastImageContainerDrawResult = drawResult; AutoTArray<ImageContainer::NonOwningImage, 1> imageList; imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(), mLastFrameID++, mImageProducerID)); container->SetCurrentImages(imageList); } size_t RasterImage::SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) const { return mSourceBuffer->SizeOfIncludingThisWithComputedFallback(aMallocSizeOf); } void RasterImage::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters, MallocSizeOf aMallocSizeOf) const { SurfaceCache::CollectSizeOfSurfaces(ImageKey(this), aCounters, aMallocSizeOf); if (mFrameAnimator) { mFrameAnimator->CollectSizeOfCompositingSurfaces(aCounters, aMallocSizeOf); } } bool RasterImage::SetMetadata(const ImageMetadata& aMetadata, bool aFromMetadataDecode) { MOZ_ASSERT(NS_IsMainThread()); if (mError) { return true; } if (aMetadata.HasSize()) { IntSize size = aMetadata.GetSize(); if (size.width < 0 || size.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 && (size != 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. mSize = size; mOrientation = orientation; mHasSize = true; } if (mHasSize && aMetadata.HasAnimation() && !mAnimationState) { // We're becoming animated, so initialize animation stuff. mAnimationState.emplace(mAnimationMode); mFrameAnimator = MakeUnique<FrameAnimator>(this, mSize); // 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()) { IntPoint hotspot = aMetadata.GetHotspot(); nsCOMPtr<nsISupportsPRUint32> intwrapx = do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID); nsCOMPtr<nsISupportsPRUint32> intwrapy = do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID); intwrapx->SetData(hotspot.x); intwrapy->SetData(hotspot.y); Set("hotspotX", intwrapx); Set("hotspotY", intwrapy); } 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"); mAnimationState->ResetAnimation(); NotifyProgress(NoProgress, mAnimationState->FirstFrameRefreshArea()); // 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) { 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. mHasSourceData = 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?"); NotifyProgress(FLAG_ONLOAD_BLOCKED); 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_FAILED(rv)) { DoError(); } return rv; } nsresult RasterImage::SetSourceSizeHint(uint32_t aSizeHint) { return mSourceBuffer->ExpectLength(aSizeHint); } /********* Methods to implement lazy allocation of nsIProperties object *******/ NS_IMETHODIMP RasterImage::Get(const char* prop, const nsIID& iid, void** result) { if (!mProperties) { return NS_ERROR_FAILURE; } return mProperties->Get(prop, iid, result); } NS_IMETHODIMP RasterImage::Set(const char* prop, nsISupports* value) { if (!mProperties) { mProperties = do_CreateInstance("@mozilla.org/properties;1"); } if (!mProperties) { return NS_ERROR_OUT_OF_MEMORY; } return mProperties->Set(prop, value); } NS_IMETHODIMP RasterImage::Has(const char* prop, bool* _retval) { NS_ENSURE_ARG_POINTER(_retval); if (!mProperties) { *_retval = false; return NS_OK; } return mProperties->Has(prop, _retval); } NS_IMETHODIMP RasterImage::Undefine(const char* prop) { if (!mProperties) { return NS_ERROR_FAILURE; } return mProperties->Undefine(prop); } NS_IMETHODIMP RasterImage::GetKeys(uint32_t* count, char*** keys) { if (!mProperties) { *count = 0; *keys = nullptr; return NS_OK; } return mProperties->GetKeys(count, keys); } void RasterImage::Discard() { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(CanDiscard(), "Asked to discard but can't"); MOZ_ASSERT(!mAnimationState, "Asked to discard for animated image"); // Delete all the decoded frames. SurfaceCache::RemoveImage(ImageKey(this)); // Notify that we discarded. if (mProgressTracker) { mProgressTracker->OnDiscard(); } } bool RasterImage::CanDiscard() { return mHasSourceData && // ...have the source data... !mAnimationState; // Can never discard animated images } NS_IMETHODIMP RasterImage::StartDecoding() { if (mError) { return NS_ERROR_FAILURE; } if (!mHasSize) { mWantFullDecode = true; return NS_OK; } return RequestDecodeForSize(mSize, FLAG_SYNC_DECODE_IF_FAST); } NS_IMETHODIMP RasterImage::RequestDecodeForSize(const IntSize& aSize, uint32_t aFlags) { MOZ_ASSERT(NS_IsMainThread()); if (mError) { return NS_ERROR_FAILURE; } if (!mHasSize) { return NS_OK; } // 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. LookupFrame(aSize, flags, mAnimationState ? PlaybackType::eAnimated : PlaybackType::eStatic); return NS_OK; } static void LaunchDecodingTask(IDecodingTask* aTask, RasterImage* aImage, uint32_t aFlags, bool aHaveSourceData) { if (aHaveSourceData) { // If we have all the data, we can sync decode if requested. if (aFlags & imgIContainer::FLAG_SYNC_DECODE) { PROFILER_LABEL_PRINTF("DecodePool", "SyncRunIfPossible", js::ProfileEntry::Category::GRAPHICS, "%s", aImage->GetURIString().get()); DecodePool::Singleton()->SyncRunIfPossible(aTask); return; } if (aFlags & imgIContainer::FLAG_SYNC_DECODE_IF_FAST) { PROFILER_LABEL_PRINTF("DecodePool", "SyncRunIfPreferred", js::ProfileEntry::Category::GRAPHICS, "%s", aImage->GetURIString().get()); DecodePool::Singleton()->SyncRunIfPreferred(aTask); return; } } // 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); } NS_IMETHODIMP RasterImage::Decode(const IntSize& aSize, uint32_t aFlags, PlaybackType aPlaybackType) { MOZ_ASSERT(NS_IsMainThread()); if (mError) { return NS_ERROR_FAILURE; } // If we don't have a size yet, we can't do any other decoding. if (!mHasSize) { mWantFullDecode = true; return NS_OK; } // 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; } 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; if (mAnimationState && aPlaybackType == PlaybackType::eAnimated) { task = DecoderFactory::CreateAnimationDecoder(mDecoderType, WrapNotNull(this), mSourceBuffer, mSize, decoderFlags, surfaceFlags); } else { task = DecoderFactory::CreateDecoder(mDecoderType, WrapNotNull(this), mSourceBuffer, mSize, aSize, decoderFlags, surfaceFlags, mRequestedSampleSize); } // Make sure DecoderFactory was able to create a decoder successfully. if (!task) { return NS_ERROR_FAILURE; } mDecodeCount++; // We're ready to decode; start the decoder. LaunchDecodingTask(task, this, aFlags, mHasSourceData); return NS_OK; } 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, mRequestedSampleSize); // 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, mHasSourceData); return NS_OK; } void RasterImage::RecoverFromInvalidFrames(const IntSize& 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)); } // Animated images require some special handling, because we normally require // that they never be discarded. if (mAnimationState) { Decode(mSize, aFlags | FLAG_SYNC_DECODE, PlaybackType::eAnimated); ResetAnimation(); return; } // For non-animated images, it's fine to recover using an async decode. Decode(aSize, aFlags, PlaybackType::eStatic); } static bool HaveSkia() { #ifdef MOZ_ENABLE_SKIA return true; #else return false; #endif } bool RasterImage::CanDownscaleDuringDecode(const IntSize& 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() || !gfxPrefs::ImageDownscaleDuringDecodeEnabled() || !(aFlags & imgIContainer::FLAG_HIGH_QUALITY_SCALING)) { return false; } // We don't downscale animated images during decode. if (mAnimationState) { return false; } // Never upscale. if (aSize.width >= mSize.width || aSize.height >= mSize.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)) { return false; } return true; } DrawResult RasterImage::DrawInternal(DrawableSurface&& aSurface, gfxContext* aContext, const IntSize& aSize, const ImageRegion& aRegion, SamplingFilter aSamplingFilter, uint32_t aFlags) { gfxContextMatrixAutoSaveRestore saveMatrix(aContext); ImageRegion region(aRegion); bool frameIsFinished = aSurface->IsFinished(); // By now we may have a frame with the requested size. If not, we need to // adjust the drawing parameters accordingly. IntSize finalSize = aSurface->GetImageSize(); bool couldRedecodeForBetterFrame = false; if (finalSize != aSize) { 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)) { RecoverFromInvalidFrames(aSize, aFlags); return DrawResult::TEMPORARY_ERROR; } if (!frameIsFinished) { return DrawResult::INCOMPLETE; } if (couldRedecodeForBetterFrame) { return DrawResult::WRONG_SIZE; } return DrawResult::SUCCESS; } //****************************************************************************** NS_IMETHODIMP_(DrawResult) RasterImage::Draw(gfxContext* aContext, const IntSize& aSize, const ImageRegion& aRegion, uint32_t aWhichFrame, SamplingFilter aSamplingFilter, const Maybe<SVGImageContext>& /*aSVGContext - ignored*/, uint32_t aFlags) { if (aWhichFrame > FRAME_MAX_VALUE) { return DrawResult::BAD_ARGS; } if (mError) { return DrawResult::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 DrawResult::BAD_ARGS; } if (!aContext) { return DrawResult::BAD_ARGS; } if (IsUnlocked() && mProgressTracker) { mProgressTracker->OnUnlockedDraw(); } // 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; DrawableSurface surface = LookupFrame(aSize, flags, ToPlaybackType(aWhichFrame)); if (!surface) { // Getting the frame (above) touches the image and kicks off decoding. if (mDrawStartTime.IsNull()) { mDrawStartTime = TimeStamp::Now(); } return DrawResult::NOT_READY; } auto result = DrawInternal(Move(surface), aContext, aSize, aRegion, aSamplingFilter, flags); return result; } //****************************************************************************** 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; } // Indempotent 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. NotifyProgress(NoProgress, IntRect(0, 0, mSize.width, mSize.height)); 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) : 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 IntRect& aInvalidRect /* = IntRect() */, 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(); if (!aInvalidRect.IsEmpty() && wasDefaultFlags) { // Update our image container since we're invalidating. UpdateImageContainer(); } 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, aInvalidRect); } void RasterImage::NotifyDecodeComplete(const DecoderFinalStatus& aStatus, const ImageMetadata& aMetadata, const DecoderTelemetry& aTelemetry, Progress aProgress, const IntRect& 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(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->SetDoneDecoding(true); } // 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(); NotifyProgress(FLAG_ONLOAD_UNBLOCKED); } // If we were a metadata decode and a full decode was requested, do it. if (mWantFullDecode) { mWantFullDecode = false; RequestDecodeForSize(mSize, DECODE_FLAGS_DEFAULT); } } } 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()) { nsCString uri; if (GetURI()->GetSpecTruncatedTo1k(uri) == ImageURL::TruncatedTo1k) { 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(nsIDocument*) { // 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); } IntSize destSize = IntSize::Ceil(aDest.width, aDest.height); if (aSamplingFilter == SamplingFilter::GOOD && CanDownscaleDuringDecode(destSize, aFlags)) { return destSize; } // We can't scale to this size. Use our intrinsic size for now. return mSize; } } // namespace image } // namespace mozilla