mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/image/RasterImage.cpp

1860 строки
53 KiB
C++
Исходник Ответственный История

/* -*- 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 "DecodePool.h"
#include "Decoder.h"
#include "prenv.h"
#include "prsystem.h"
#include "IDecodingTask.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;
#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),
#ifdef DEBUG
mFramesNotified(0),
#endif
mSourceBuffer(MakeNotNull<SourceBuffer*>()),
mHasSize(false),
mTransient(false),
mSyncLoad(false),
mDiscardable(false),
mSomeSourceData(false),
mAllSourceData(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));
// Record Telemetry.
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_COUNT, mDecodeCount);
if (mAnimationState) {
Telemetry::Accumulate(Telemetry::IMAGE_ANIMATED_DECODE_COUNT, mDecodeCount);
}
}
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));
}
// 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, mAnimationFinished);
}
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;
}
//******************************************************************************
nsresult
RasterImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) const
{
if (mError) {
return NS_ERROR_FAILURE;
}
if (mNativeSizes.IsEmpty()) {
aNativeSizes.Clear();
aNativeSizes.AppendElement(mSize);
} else {
aNativeSizes = mNativeSizes;
}
return NS_OK;
}
//******************************************************************************
size_t
RasterImage::GetNativeSizesLength() const
{
if (mError || !mHasSize) {
return 0;
}
if (mNativeSizes.IsEmpty()) {
return 1;
}
return mNativeSizes.Length();
}
//******************************************************************************
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");
return mFrameAnimator->GetCompositedFrame(*mAnimationState);
}
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));
}
LookupResult
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()) {
// Can't decode to a surface of zero size.
return LookupResult(MatchType::NOT_FOUND);
}
LookupResult result =
LookupFrameInternal(requestedSize, aFlags, aPlaybackType);
if (!result && !mHasSize) {
// We can't request a decode without knowing our intrinsic size. Give up.
return LookupResult(MatchType::NOT_FOUND);
}
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 ||
gfxPrefs::ImageMemAnimatedDiscardable() ||
!mAnimationState || mAnimationState->KnownFrameCount() < 1,
"Animated frames should be locked");
// The surface cache may suggest the preferred size we are supposed to
// decode at. This should only happen if we accept substitutions.
if (!result.SuggestedSize().IsEmpty()) {
MOZ_ASSERT(!(aFlags & FLAG_SYNC_DECODE) &&
(aFlags & FLAG_HIGH_QUALITY_SCALING));
requestedSize = result.SuggestedSize();
}
bool ranSync = Decode(requestedSize, aFlags, aPlaybackType);
// If we can or did sync decode, we should already have the frame.
if (ranSync || (aFlags & FLAG_SYNC_DECODE)) {
result = LookupFrameInternal(requestedSize, aFlags, aPlaybackType);
}
}
if (!result) {
// We still weren't able to get a frame. Give up.
return result;
}
if (result.Surface()->GetCompositingFailed()) {
DrawableSurface tmp = Move(result.Surface());
return result;
}
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 (mAllSourceData && (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()) {
DrawableSurface tmp = Move(result.Surface());
return result;
}
return result;
}
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) {
if (!gfxPrefs::ImageMemAnimatedDiscardable()) {
// We never discard frames of animated images.
return true;
} else {
if (mAnimationState->GetCompositedFrameInvalid()) {
// We're not going to draw anything at all.
return false;
}
}
}
// 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 (mLockCount == 0) {
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(const SurfaceKey& aSurfaceKey)
{
MOZ_ASSERT(mProgressTracker);
bool animatedFramesDiscarded =
mAnimationState && aSurfaceKey.Playback() == PlaybackType::eAnimated;
nsCOMPtr<nsIEventTarget> eventTarget;
if (mProgressTracker) {
eventTarget = mProgressTracker->GetEventTarget();
} else {
eventTarget = do_GetMainThread();
}
RefPtr<RasterImage> image = this;
nsCOMPtr<nsIRunnable> ev = NS_NewRunnableFunction(
"RasterImage::OnSurfaceDiscarded",
[=]() -> void {
image->OnSurfaceDiscardedInternal(animatedFramesDiscarded);
});
eventTarget->Dispatch(ev.forget(), NS_DISPATCH_NORMAL);
}
void
RasterImage::OnSurfaceDiscardedInternal(bool aAnimatedFramesDiscarded)
{
MOZ_ASSERT(NS_IsMainThread());
if (aAnimatedFramesDiscarded && mAnimationState) {
MOZ_ASSERT(gfxPrefs::ImageMemAnimatedDiscardable());
ReleaseImageContainer();
gfx::IntRect rect =
mAnimationState->UpdateState(mAnimationFinished, this, mSize);
NotifyProgress(NoProgress, rect);
}
if (mProgressTracker) {
mProgressTracker->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 GetFrameAtSize(mSize, 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);
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(aSize, aFlags, ToPlaybackType(aWhichFrame));
// 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.
IntSize suggestedSize = result.SuggestedSize().IsEmpty()
? aSize : result.SuggestedSize();
MOZ_ASSERT_IF(result.Type() == MatchType::SUBSTITUTE_BECAUSE_BEST,
suggestedSize != aSize);
if (!result) {
// The OS threw this frame away and we couldn't redecode it.
return MakeTuple(ImgDrawResult::TEMPORARY_ERROR, suggestedSize,
RefPtr<SourceSurface>());
}
RefPtr<SourceSurface> surface = result.Surface()->GetSourceSurface();
if (!result.Surface()->IsFinished()) {
return MakeTuple(ImgDrawResult::INCOMPLETE, suggestedSize, Move(surface));
}
return MakeTuple(ImgDrawResult::SUCCESS, suggestedSize, Move(surface));
}
IntSize
RasterImage::GetImageContainerSize(LayerManager* aManager,
const IntSize& aSize,
uint32_t aFlags)
{
if (!IsImageContainerAvailableAtSize(aManager, aSize, aFlags)) {
return IntSize(0, 0);
}
if (!CanDownscaleDuringDecode(aSize, aFlags)) {
return mSize;
}
return aSize;
}
NS_IMETHODIMP_(bool)
RasterImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
{
return IsImageContainerAvailableAtSize(aManager, mSize, aFlags);
}
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
return GetImageContainerImpl(aManager, mSize, Nothing(), aFlags);
}
NS_IMETHODIMP_(bool)
RasterImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
const IntSize& aSize,
uint32_t aFlags)
{
// We check the minimum size because while we support downscaling, we do not
// support upscaling. If aSize > mSize, we will never give a larger surface
// than mSize. If mSize > aSize, and mSize > maxTextureSize, we still want to
// use image containers if aSize <= maxTextureSize.
int32_t maxTextureSize = aManager->GetMaxTextureSize();
if (!mHasSize || aSize.IsEmpty() ||
min(mSize.width, aSize.width) > maxTextureSize ||
min(mSize.height, aSize.height) > maxTextureSize) {
return false;
}
return true;
}
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
RasterImage::GetImageContainerAtSize(LayerManager* aManager,
const IntSize& aSize,
const Maybe<SVGImageContext>& aSVGContext,
uint32_t aFlags)
{
// 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);
}
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);
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;
mNativeSizes = aMetadata.GetNativeSizes();
mHasSize = true;
}
if (mHasSize && aMetadata.HasAnimation() && !mAnimationState) {
// We're becoming animated, so initialize animation stuff.
mAnimationState.emplace(mAnimationMode);
mFrameAnimator = MakeUnique<FrameAnimator>(this, mSize);
if (!gfxPrefs::ImageMemAnimatedDiscardable()) {
// 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");
MOZ_ASSERT(mFrameAnimator, "Should have FrameAnimator");
mFrameAnimator->ResetAnimation(*mAnimationState);
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.
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)
{
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 || gfxPrefs::ImageMemAnimatedDiscardable(),
"Asked to discard for animated image");
// Delete all the decoded frames.
SurfaceCache::RemoveImage(ImageKey(this));
if (mAnimationState) {
ReleaseImageContainer();
gfx::IntRect rect =
mAnimationState->UpdateState(mAnimationFinished, this, mSize);
NotifyProgress(NoProgress, rect);
}
// Notify that we discarded.
if (mProgressTracker) {
mProgressTracker->OnDiscard();
}
}
bool
RasterImage::CanDiscard() {
return mAllSourceData &&
// Can discard animated images if the pref is set
(!mAnimationState || gfxPrefs::ImageMemAnimatedDiscardable());
}
NS_IMETHODIMP
RasterImage::StartDecoding(uint32_t aFlags)
{
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;
return RequestDecodeForSize(mSize, flags);
}
bool
RasterImage::StartDecodingWithResult(uint32_t aFlags)
{
if (mError) {
return false;
}
if (!mHasSize) {
mWantFullDecode = true;
return false;
}
uint32_t flags = (aFlags & FLAG_ASYNC_NOTIFY) | FLAG_SYNC_DECODE_IF_FAST;
DrawableSurface surface = RequestDecodeForSizeInternal(mSize, flags);
return surface && surface->IsFinished();
}
NS_IMETHODIMP
RasterImage::RequestDecodeForSize(const IntSize& aSize, uint32_t aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return NS_ERROR_FAILURE;
}
RequestDecodeForSizeInternal(aSize, aFlags);
return NS_OK;
}
DrawableSurface
RasterImage::RequestDecodeForSizeInternal(const IntSize& aSize, uint32_t aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return DrawableSurface();
}
if (!mHasSize) {
mWantFullDecode = true;
return DrawableSurface();
}
// 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.
PlaybackType playbackType = mAnimationState ? PlaybackType::eAnimated
: PlaybackType::eStatic;
LookupResult result = LookupFrame(aSize, flags, playbackType);
return Move(result.Surface());
}
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;
}
bool
RasterImage::Decode(const IntSize& aSize,
uint32_t aFlags,
PlaybackType aPlaybackType)
{
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return false;
}
// If we don't have a size yet, we can't do any other decoding.
if (!mHasSize) {
mWantFullDecode = true;
return false;
}
// 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, mSize,
decoderFlags, surfaceFlags,
currentFrame,
getter_AddRefs(task));
} else {
rv = DecoderFactory::CreateDecoder(mDecoderType, WrapNotNull(this),
mSourceBuffer, mSize, aSize,
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);
return true;
}
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
gfx::IntRect rect =
#endif
mAnimationState->UpdateState(mAnimationFinished, this, mSize, false);
MOZ_ASSERT(rect.IsEmpty());
}
// Make sure DecoderFactory was able to create a decoder successfully.
if (NS_FAILED(rv)) {
MOZ_ASSERT(!task);
return false;
}
MOZ_ASSERT(task);
mDecodeCount++;
// We're ready to decode; start the decoder.
return 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 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;
}
ImgDrawResult
RasterImage::DrawInternal(DrawableSurface&& aSurface,
gfxContext* aContext,
const IntSize& 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->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, 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;
LookupResult result =
LookupFrame(aSize, flags, ToPlaybackType(aWhichFrame));
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();
auto drawResult = DrawInternal(Move(result.Surface()), aContext, aSize,
aRegion, aSamplingFilter, flags, aOpacity);
if (shouldRecordTelemetry) {
TimeDuration drawLatency = TimeStamp::Now() - mDrawStartTime;
Telemetry::Accumulate(Telemetry::IMAGE_DECODE_ON_DRAW_LATENCY,
int32_t(drawLatency.ToMicroseconds()));
if (mAnimationState) {
Telemetry::Accumulate(Telemetry::IMAGE_ANIMATED_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;
}
// 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)
: 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 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->NotifyDecodeComplete();
gfx::IntRect rect = mAnimationState->UpdateState(mAnimationFinished, this, mSize);
if (!rect.IsEmpty()) {
NotifyProgress(NoProgress, rect);
}
}
// 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 (mAnimationState) {
Telemetry::Accumulate(Telemetry::IMAGE_ANIMATED_DECODE_TIME,
int32_t(aTelemetry.mDecodeTime.ToMicroseconds()));
}
if (aTelemetry.mSpeedHistogram) {
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, 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
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку