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gecko-dev/image/RasterImage.cpp

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/* -*- 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 "base/histogram.h"
#include "gfxPlatform.h"
#include "nsComponentManagerUtils.h"
#include "nsError.h"
#include "Decoder.h"
#include "prenv.h"
#include "prsystem.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/Telemetry.h"
#include "mozilla/TimeStamp.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;
// The maximum number of times any one RasterImage was decoded. This is only
// used for statistics.
static int32_t sMaxDecodeCount = 0;
#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),
mLastImageContainerDrawResult(DrawResult::NOT_READY),
#ifdef DEBUG
mFramesNotified(0),
#endif
mSourceBuffer(new SourceBuffer()),
mFrameCount(0),
mHasSize(false),
mTransient(false),
mSyncLoad(false),
mDiscardable(false),
mHasSourceData(false),
mHasBeenDecoded(false),
mPendingAnimation(false),
mAnimationFinished(false),
mWantFullDecode(false)
{
Telemetry::GetHistogramById(Telemetry::IMAGE_DECODE_COUNT)->Add(0);
}
//******************************************************************************
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;
}
FrameAnimator::RefreshResult res;
if (mAnim) {
res = mAnim->RequestRefresh(aTime);
}
if (res.frameAdvanced) {
// 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.dirtyRect);
}
if (res.animationFinished) {
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(uint32_t aFrameNum,
const IntSize& aSize,
uint32_t aFlags)
{
if (!mAnim) {
NS_ASSERTION(aFrameNum == 0,
"Don't ask for a frame > 0 if we're not animated!");
aFrameNum = 0;
}
if (mAnim && aFrameNum > 0) {
MOZ_ASSERT(ToSurfaceFlags(aFlags) == DefaultSurfaceFlags(),
"Can't composite frames with non-default surface flags");
return mAnim->GetCompositedFrame(aFrameNum);
}
SurfaceFlags surfaceFlags = ToSurfaceFlags(aFlags);
// We don't want any substitution for sync decodes, so we use
// SurfaceCache::Lookup in this case.
if (aFlags & FLAG_SYNC_DECODE) {
return SurfaceCache::Lookup(ImageKey(this),
RasterSurfaceKey(aSize,
surfaceFlags,
aFrameNum));
}
// We'll return the best match we can find to the requested frame.
return SurfaceCache::LookupBestMatch(ImageKey(this),
RasterSurfaceKey(aSize,
surfaceFlags,
aFrameNum));
}
DrawableFrameRef
RasterImage::LookupFrame(uint32_t aFrameNum,
const IntSize& aSize,
uint32_t aFlags)
{
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 DrawableFrameRef(); // Can't decode to a surface of zero size.
}
LookupResult result = LookupFrameInternal(aFrameNum, requestedSize, aFlags);
if (!result && !mHasSize) {
// We can't request a decode without knowing our intrinsic size. Give up.
return DrawableFrameRef();
}
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(!mAnim || GetNumFrames() < 1, "Animated frames should be locked");
Decode(requestedSize, aFlags);
// If we can sync decode, we should already have the frame.
if (aFlags & FLAG_SYNC_DECODE) {
result = LookupFrameInternal(aFrameNum, requestedSize, aFlags);
}
}
if (!result) {
// We still weren't able to get a frame. Give up.
return DrawableFrameRef();
}
if (result.DrawableRef()->GetCompositingFailed()) {
return DrawableFrameRef();
}
MOZ_ASSERT(!result.DrawableRef()->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.DrawableRef()->WaitUntilComplete();
}
return Move(result.DrawableRef());
}
uint32_t
RasterImage::GetCurrentFrameIndex() const
{
if (mAnim) {
return mAnim->GetCurrentAnimationFrameIndex();
}
return 0;
}
uint32_t
RasterImage::GetRequestedFrameIndex(uint32_t aWhichFrame) const
{
return aWhichFrame == FRAME_FIRST ? 0 : GetCurrentFrameIndex();
}
IntRect
RasterImage::GetFirstFrameRect()
{
if (mAnim && mHasBeenDecoded) {
return mAnim->GetFirstFrameRefreshArea();
}
// Fall back to our size. This is implicitly zero-size if !mHasSize.
return IntRect(IntPoint(0,0), mSize);
}
NS_IMETHODIMP_(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);
}
void
RasterImage::OnSurfaceDiscarded()
{
MOZ_ASSERT(mProgressTracker);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethod(mProgressTracker, &ProgressTracker::OnDiscard);
NS_DispatchToMainThread(runnable);
}
//******************************************************************************
NS_IMETHODIMP
RasterImage::GetAnimated(bool* aAnimated)
{
if (mError) {
return NS_ERROR_FAILURE;
}
NS_ENSURE_ARG_POINTER(aAnimated);
// If we have mAnim, we can know for sure
if (mAnim) {
*aAnimated = true;
return NS_OK;
}
// Otherwise, we need to have been decoded to know for sure, since if we were
// decoded at least once mAnim 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(mAnim, "Animated images should have a FrameAnimator");
return mAnim->GetTimeoutForFrame(0);
}
already_AddRefed<SourceSurface>
RasterImage::CopyFrame(uint32_t aWhichFrame, uint32_t aFlags)
{
if (aWhichFrame > FRAME_MAX_VALUE) {
return nullptr;
}
if (mError) {
return nullptr;
}
// 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
DrawableFrameRef frameRef =
LookupFrame(GetRequestedFrameIndex(aWhichFrame), mSize, aFlags);
if (!frameRef) {
// The OS threw this frame away and we couldn't redecode it right now.
return nullptr;
}
// Create a 32-bit image surface of our size, but draw using the frame's
// rect, implicitly padding the frame out to the image's size.
IntSize size(mSize.width, mSize.height);
RefPtr<DataSourceSurface> surf =
Factory::CreateDataSourceSurface(size,
SurfaceFormat::B8G8R8A8,
/* aZero = */ true);
if (NS_WARN_IF(!surf)) {
return nullptr;
}
DataSourceSurface::MappedSurface mapping;
if (!surf->Map(DataSourceSurface::MapType::WRITE, &mapping)) {
gfxCriticalError() << "RasterImage::CopyFrame failed to map surface";
return nullptr;
}
RefPtr<DrawTarget> target =
Factory::CreateDrawTargetForData(BackendType::CAIRO,
mapping.mData,
size,
mapping.mStride,
SurfaceFormat::B8G8R8A8);
if (!target) {
gfxWarning() << "RasterImage::CopyFrame failed in CreateDrawTargetForData";
return nullptr;
}
IntRect intFrameRect = frameRef->GetRect();
Rect rect(intFrameRect.x, intFrameRect.y,
intFrameRect.width, intFrameRect.height);
if (frameRef->IsSinglePixel()) {
target->FillRect(rect, ColorPattern(frameRef->SinglePixelColor()),
DrawOptions(1.0f, CompositionOp::OP_SOURCE));
} else {
RefPtr<SourceSurface> srcSurf = frameRef->GetSurface();
if (!srcSurf) {
RecoverFromInvalidFrames(mSize, aFlags);
return nullptr;
}
Rect srcRect(0, 0, intFrameRect.width, intFrameRect.height);
target->DrawSurface(srcSurf, srcRect, rect);
}
target->Flush();
surf->Unmap();
return surf.forget();
}
//******************************************************************************
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
DrawableFrameRef frameRef =
LookupFrame(GetRequestedFrameIndex(aWhichFrame), aSize, aFlags);
if (!frameRef) {
// The OS threw this frame away and we couldn't redecode it.
return MakePair(DrawResult::TEMPORARY_ERROR, RefPtr<SourceSurface>());
}
// If this frame covers the entire image, we can just reuse its existing
// surface.
RefPtr<SourceSurface> frameSurf;
if (!frameRef->NeedsPadding() &&
frameRef->GetSize() == aSize) {
frameSurf = frameRef->GetSurface();
}
// The image doesn't have a usable surface because it's been optimized away or
// because it's a partial update frame from an animation. Create one. (In this
// case we fall back to returning a surface at our intrinsic size, even if a
// different size was originally specified.)
if (!frameSurf) {
frameSurf = CopyFrame(aWhichFrame, aFlags);
}
if (!frameRef->IsImageComplete()) {
return MakePair(DrawResult::INCOMPLETE, Move(frameSurf));
}
return MakePair(DrawResult::SUCCESS, Move(frameSurf));
}
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>());
}
IntSize size;
GetWidth(&size.width);
GetHeight(&size.height);
RefPtr<layers::Image> image = new layers::CairoImage(size, 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.
container->SetCurrentImageInTransaction(image);
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;
nsAutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(ImageContainer::NonOwningImage(image));
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 (mAnim) {
mAnim->CollectSizeOfCompositingSurfaces(aCounters, aMallocSizeOf);
}
}
class OnAddedFrameRunnable : public nsRunnable
{
public:
OnAddedFrameRunnable(RasterImage* aImage,
uint32_t aNewFrameCount,
const IntRect& aNewRefreshArea)
: mImage(aImage)
, mNewFrameCount(aNewFrameCount)
, mNewRefreshArea(aNewRefreshArea)
{
MOZ_ASSERT(aImage);
}
NS_IMETHOD Run()
{
mImage->OnAddedFrame(mNewFrameCount, mNewRefreshArea);
return NS_OK;
}
private:
RefPtr<RasterImage> mImage;
uint32_t mNewFrameCount;
IntRect mNewRefreshArea;
};
void
RasterImage::OnAddedFrame(uint32_t aNewFrameCount,
const IntRect& aNewRefreshArea)
{
if (!NS_IsMainThread()) {
nsCOMPtr<nsIRunnable> runnable =
new OnAddedFrameRunnable(this, aNewFrameCount, aNewRefreshArea);
NS_DispatchToMainThread(runnable);
return;
}
MOZ_ASSERT(aNewFrameCount <= mFrameCount + 1, "Skipped a frame?");
if (mError) {
return; // We're in an error state, possibly due to OOM. Bail.
}
if (aNewFrameCount > mFrameCount) {
mFrameCount = aNewFrameCount;
if (aNewFrameCount == 2) {
MOZ_ASSERT(mAnim, "Should already have animation state");
// We may be able to start animating.
if (mPendingAnimation && ShouldAnimate()) {
StartAnimation();
}
}
if (aNewFrameCount > 1) {
mAnim->UnionFirstFrameRefreshArea(aNewRefreshArea);
}
}
}
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() && !mAnim) {
// We're becoming animated, so initialize animation stuff.
mAnim = MakeUnique<FrameAnimator>(this, mSize, mAnimationMode);
// 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 (mAnim) {
mAnim->SetLoopCount(aMetadata.GetLoopCount());
mAnim->SetFirstFrameTimeout(aMetadata.GetFirstFrameTimeout());
}
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 (mAnim) {
mAnim->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 = !mAnim || GetNumFrames() < 2;
if (mPendingAnimation) {
return NS_OK;
}
// A timeout of -1 means we should display this frame forever.
if (mAnim->GetTimeoutForFrame(GetCurrentFrameIndex()) < 0) {
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().
mAnim->InitAnimationFrameTimeIfNecessary();
return NS_OK;
}
//******************************************************************************
nsresult
RasterImage::StopAnimation()
{
MOZ_ASSERT(mAnimating, "Should be animating!");
nsresult rv = NS_OK;
if (mError) {
rv = NS_ERROR_FAILURE;
} else {
mAnim->SetAnimationFrameTime(TimeStamp());
}
mAnimating = false;
return rv;
}
//******************************************************************************
NS_IMETHODIMP
RasterImage::ResetAnimation()
{
if (mError) {
return NS_ERROR_FAILURE;
}
mPendingAnimation = false;
if (mAnimationMode == kDontAnimMode || !mAnim ||
mAnim->GetCurrentAnimationFrameIndex() == 0) {
return NS_OK;
}
mAnimationFinished = false;
if (mAnimating) {
StopAnimation();
}
MOZ_ASSERT(mAnim, "Should have a FrameAnimator");
mAnim->ResetAnimation();
NotifyProgress(NoProgress, mAnim->GetFirstFrameRefreshArea());
// 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 || !mAnim) {
return;
}
mAnim->SetAnimationFrameTime(aTime);
}
NS_IMETHODIMP_(float)
RasterImage::GetFrameIndex(uint32_t aWhichFrame)
{
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
return (aWhichFrame == FRAME_FIRST || !mAnim)
? 0.0f
: mAnim->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);
MOZ_ASSERT(rv == NS_OK || rv == NS_ERROR_OUT_OF_MEMORY);
if (MOZ_UNLIKELY(rv == NS_ERROR_OUT_OF_MEMORY)) {
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(!mAnim, "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...
!mAnim; // 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;
// Look up the first frame of the image, which will implicitly start decoding
// if it's not available right now.
LookupFrame(0, aSize, flags);
return NS_OK;
}
static void
LaunchDecoder(Decoder* aDecoder,
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", "SyncDecodeIfPossible",
js::ProfileEntry::Category::GRAPHICS,
"%s", aImage->GetURIString().get());
DecodePool::Singleton()->SyncDecodeIfPossible(aDecoder);
return;
}
if (aFlags & imgIContainer::FLAG_SYNC_DECODE_IF_FAST) {
PROFILER_LABEL_PRINTF("DecodePool", "SyncDecodeIfSmall",
js::ProfileEntry::Category::GRAPHICS,
"%s", aImage->GetURIString().get());
DecodePool::Singleton()->SyncDecodeIfSmall(aDecoder);
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()->AsyncDecode(aDecoder);
}
NS_IMETHODIMP
RasterImage::Decode(const IntSize& aSize, uint32_t aFlags)
{
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::UnlockSurfaces(ImageKey(this));
Maybe<IntSize> targetSize = mSize != aSize ? Some(aSize) : Nothing();
// 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<Decoder> decoder;
if (mAnim) {
decoder = DecoderFactory::CreateAnimationDecoder(mDecoderType, this,
mSourceBuffer, decoderFlags,
surfaceFlags);
} else {
decoder = DecoderFactory::CreateDecoder(mDecoderType, this, mSourceBuffer,
targetSize, decoderFlags,
surfaceFlags,
mRequestedSampleSize);
}
// Make sure DecoderFactory was able to create a decoder successfully.
if (!decoder) {
return NS_ERROR_FAILURE;
}
// Add a placeholder for the first frame to the SurfaceCache so we won't
// trigger any more decoders with the same parameters.
InsertOutcome outcome =
SurfaceCache::InsertPlaceholder(ImageKey(this),
RasterSurfaceKey(aSize,
decoder->GetSurfaceFlags(),
/* aFrameNum = */ 0));
if (outcome != InsertOutcome::SUCCESS) {
return NS_ERROR_FAILURE;
}
// Report telemetry.
Telemetry::GetHistogramById(Telemetry::IMAGE_DECODE_COUNT)
->Subtract(mDecodeCount);
mDecodeCount++;
Telemetry::GetHistogramById(Telemetry::IMAGE_DECODE_COUNT)
->Add(mDecodeCount);
if (mDecodeCount > sMaxDecodeCount) {
// Don't subtract out 0 from the histogram, because that causes its count
// to go negative, which is not kosher.
if (sMaxDecodeCount > 0) {
Telemetry::GetHistogramById(Telemetry::IMAGE_MAX_DECODE_COUNT)
->Subtract(sMaxDecodeCount);
}
sMaxDecodeCount = mDecodeCount;
Telemetry::GetHistogramById(Telemetry::IMAGE_MAX_DECODE_COUNT)
->Add(sMaxDecodeCount);
}
// We're ready to decode; start the decoder.
LaunchDecoder(decoder, 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<Decoder> decoder =
DecoderFactory::CreateMetadataDecoder(mDecoderType, this, mSourceBuffer,
mRequestedSampleSize);
// Make sure DecoderFactory was able to create a decoder successfully.
if (!decoder) {
return NS_ERROR_FAILURE;
}
// We're ready to decode; start the decoder.
LaunchDecoder(decoder, 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 (mAnim) {
Decode(mSize, aFlags | FLAG_SYNC_DECODE);
ResetAnimation();
return;
}
// For non-animated images, it's fine to recover using an async decode.
Decode(aSize, aFlags);
}
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 (mAnim) {
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(DrawableFrameRef&& aFrameRef,
gfxContext* aContext,
const IntSize& aSize,
const ImageRegion& aRegion,
Filter aFilter,
uint32_t aFlags)
{
gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
ImageRegion region(aRegion);
bool frameIsComplete = aFrameRef->IsImageComplete();
// By now we may have a frame with the requested size. If not, we need to
// adjust the drawing parameters accordingly.
IntSize finalSize = aFrameRef->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 (!aFrameRef->Draw(aContext, region, aFilter, aFlags)) {
RecoverFromInvalidFrames(aSize, aFlags);
return DrawResult::TEMPORARY_ERROR;
}
if (!frameIsComplete) {
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,
Filter aFilter,
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 Filter::GOOD, we shouldn't high-quality scale or
// downscale during decode.
uint32_t flags = aFilter == Filter::GOOD
? aFlags
: aFlags & ~FLAG_HIGH_QUALITY_SCALING;
DrawableFrameRef ref =
LookupFrame(GetRequestedFrameIndex(aWhichFrame), aSize, flags);
if (!ref) {
// Getting the frame (above) touches the image and kicks off decoding.
if (mDrawStartTime.IsNull()) {
mDrawStartTime = TimeStamp::Now();
}
return DrawResult::NOT_READY;
}
bool shouldRecordTelemetry = !mDrawStartTime.IsNull() &&
ref->IsImageComplete();
auto result = DrawInternal(Move(ref), aContext, aSize,
aRegion, aFilter, flags);
if (shouldRecordTelemetry) {
TimeDuration drawLatency = TimeStamp::Now() - mDrawStartTime;
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_ON_DRAW_LATENCY,
int32_t(drawLatency.ToMicroseconds()));
mDrawStartTime = TimeStamp();
}
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();
}
mAnim.release();
// 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() && GetNumFrames() >= 2 &&
!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() */,
SurfaceFlags aSurfaceFlags
/* = DefaultSurfaceFlags() */)
{
MOZ_ASSERT(NS_IsMainThread());
// Ensure that we stay alive long enough to finish notifying.
RefPtr<RasterImage> image(this);
bool wasDefaultFlags = aSurfaceFlags == DefaultSurfaceFlags();
if (!aInvalidRect.IsEmpty() && wasDefaultFlags) {
// Update our image container since we're invalidating.
UpdateImageContainer();
}
// Tell the observers what happened.
image->mProgressTracker->SyncNotifyProgress(aProgress, aInvalidRect);
}
void
RasterImage::FinalizeDecoder(Decoder* aDecoder)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aDecoder);
MOZ_ASSERT(aDecoder->HasError() || !aDecoder->InFrame(),
"Finalizing a decoder in the middle of a frame");
bool wasMetadata = aDecoder->IsMetadataDecode();
bool done = aDecoder->GetDecodeDone();
// If the decoder detected an error, log it to the error console.
if (aDecoder->ShouldReportError() && !aDecoder->WasAborted()) {
ReportDecoderError(aDecoder);
}
// Record all the metadata the decoder gathered about this image.
bool metadataOK = SetMetadata(aDecoder->GetImageMetadata(), wasMetadata);
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.
aDecoder->TakeProgress();
aDecoder->TakeInvalidRect();
RecoverFromInvalidFrames(mSize,
FromSurfaceFlags(aDecoder->GetSurfaceFlags()));
return;
}
MOZ_ASSERT(mError || mHasSize || !aDecoder->HasSize(),
"SetMetadata should've gotten a size");
if (!wasMetadata && aDecoder->GetDecodeDone() && !aDecoder->WasAborted()) {
// Flag that we've been decoded before.
mHasBeenDecoded = true;
if (mAnim) {
mAnim->SetDoneDecoding(true);
}
}
// Send out any final notifications.
NotifyProgress(aDecoder->TakeProgress(),
aDecoder->TakeInvalidRect(),
aDecoder->GetSurfaceFlags());
if (!wasMetadata && aDecoder->ChunkCount()) {
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_CHUNKS,
aDecoder->ChunkCount());
}
if (done) {
// Do some telemetry if this isn't a metadata decode.
if (!wasMetadata) {
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_TIME,
int32_t(aDecoder->DecodeTime().ToMicroseconds()));
// We record the speed for only some decoders. The rest have
// SpeedHistogram return HistogramCount.
Telemetry::ID id = aDecoder->SpeedHistogram();
if (id < Telemetry::HistogramCount) {
int32_t KBps = int32_t(aDecoder->BytesDecoded() /
(1024 * aDecoder->DecodeTime().ToSeconds()));
Telemetry::Accumulate(id, KBps);
}
}
// Detect errors.
if (aDecoder->HasError() && !aDecoder->WasAborted()) {
DoError();
} else if (wasMetadata && !mHasSize) {
DoError();
}
// If we were waiting to fire the load event, go ahead and fire it now.
if (mLoadProgress && wasMetadata) {
NotifyForLoadEvent(*mLoadProgress);
mLoadProgress = Nothing();
NotifyProgress(FLAG_ONLOAD_UNBLOCKED);
}
}
// If we were a metadata decode and a full decode was requested, do it.
if (done && wasMetadata && mWantFullDecode) {
mWantFullDecode = false;
RequestDecodeForSize(mSize, DECODE_FLAGS_DEFAULT);
}
}
void
RasterImage::ReportDecoderError(Decoder* aDecoder)
{
nsCOMPtr<nsIConsoleService> consoleService =
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
nsCOMPtr<nsIScriptError> errorObject =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);
if (consoleService && errorObject && !aDecoder->HasDecoderError()) {
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,
Filter aFilter, 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(ceil(aDest.width), ceil(aDest.height));
if (aFilter == Filter::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
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