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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 "gfxPlatform.h"
#include "nsComponentManagerUtils.h"
#include "nsError.h"
#include "Decoder.h"
#include "prenv.h"
#include "prsystem.h"
#include "IDecodingTask.h"
#include "ImageContainer.h"
#include "ImageRegion.h"
#include "Layers.h"
#include "LookupResult.h"
#include "nsIConsoleService.h"
#include "nsIInputStream.h"
#include "nsIScriptError.h"
#include "nsISupportsPrimitives.h"
#include "nsPresContext.h"
#include "SourceBuffer.h"
#include "SurfaceCache.h"
#include "FrameAnimator.h"
#include "gfxContext.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/Likely.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Move.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/Services.h"
#include <stdint.h>
#include "mozilla/TimeStamp.h"
#include "mozilla/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),
mImageProducerID(ImageContainer::AllocateProducerID()),
mLastFrameID(0),
mLastImageContainerDrawResult(DrawResult::NOT_READY),
#ifdef DEBUG
mFramesNotified(0),
#endif
mSourceBuffer(WrapNotNull(new SourceBuffer())),
mHasSize(false),
mTransient(false),
mSyncLoad(false),
mDiscardable(false),
mHasSourceData(false),
mHasBeenDecoded(false),
mPendingAnimation(false),
mAnimationFinished(false),
mWantFullDecode(false)
{
}
//******************************************************************************
RasterImage::~RasterImage()
{
// Make sure our SourceBuffer is marked as complete. This will ensure that any
// outstanding decoders terminate.
if (!mSourceBuffer->IsComplete()) {
mSourceBuffer->Complete(NS_ERROR_ABORT);
}
// Release all frames from the surface cache.
SurfaceCache::RemoveImage(ImageKey(this));
}
nsresult
RasterImage::Init(const char* aMimeType,
uint32_t aFlags)
{
// We don't support re-initialization
if (mInitialized) {
return NS_ERROR_ILLEGAL_VALUE;
}
// Not sure an error can happen before init, but be safe
if (mError) {
return NS_ERROR_FAILURE;
}
// We want to avoid redecodes for transient images.
MOZ_ASSERT_IF(aFlags & INIT_FLAG_TRANSIENT,
!(aFlags & INIT_FLAG_DISCARDABLE));
// Store initialization data
mDiscardable = !!(aFlags & INIT_FLAG_DISCARDABLE);
mWantFullDecode = !!(aFlags & INIT_FLAG_DECODE_IMMEDIATELY);
mTransient = !!(aFlags & INIT_FLAG_TRANSIENT);
mSyncLoad = !!(aFlags & INIT_FLAG_SYNC_LOAD);
// Use the MIME type to select a decoder type, and make sure there *is* a
// decoder for this MIME type.
NS_ENSURE_ARG_POINTER(aMimeType);
mDecoderType = DecoderFactory::GetDecoderType(aMimeType);
if (mDecoderType == DecoderType::UNKNOWN) {
return NS_ERROR_FAILURE;
}
// Lock this image's surfaces in the SurfaceCache if we're not discardable.
if (!mDiscardable) {
mLockCount++;
SurfaceCache::LockImage(ImageKey(this));
}
if (!mSyncLoad) {
// Create an async metadata decoder and verify we succeed in doing so.
nsresult rv = DecodeMetadata(DECODE_FLAGS_DEFAULT);
if (NS_FAILED(rv)) {
return NS_ERROR_FAILURE;
}
}
// Mark us as initialized
mInitialized = true;
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP_(void)
RasterImage::RequestRefresh(const TimeStamp& aTime)
{
if (HadRecentRefresh(aTime)) {
return;
}
EvaluateAnimation();
if (!mAnimating) {
return;
}
RefreshResult res;
if (mAnimationState) {
MOZ_ASSERT(mFrameAnimator);
res = mFrameAnimator->RequestRefresh(*mAnimationState, aTime, 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;
}
//******************************************************************************
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(AspectRatio* aRatio)
{
if (mError) {
return NS_ERROR_FAILURE;
}
*aRatio = AspectRatio::FromSize(mSize);
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));
}
DrawableSurface
RasterImage::LookupFrame(const IntSize& aSize,
uint32_t aFlags,
PlaybackType aPlaybackType)
{
MOZ_ASSERT(NS_IsMainThread());
// If we're opaque, we don't need to care about premultiplied alpha, because
// that can only matter for frames with transparency.
if (IsOpaque()) {
aFlags &= ~FLAG_DECODE_NO_PREMULTIPLY_ALPHA;
}
IntSize requestedSize = CanDownscaleDuringDecode(aSize, aFlags)
? aSize : mSize;
if (requestedSize.IsEmpty()) {
return DrawableSurface(); // Can't decode to a surface of zero size.
}
LookupResult result =
LookupFrameInternal(requestedSize, aFlags, aPlaybackType);
if (!result && !mHasSize) {
// We can't request a decode without knowing our intrinsic size. Give up.
return DrawableSurface();
}
if (result.Type() == MatchType::NOT_FOUND ||
result.Type() == MatchType::SUBSTITUTE_BECAUSE_NOT_FOUND ||
((aFlags & FLAG_SYNC_DECODE) && !result)) {
// We don't have a copy of this frame, and there's no decoder working on
// one. (Or we're sync decoding and the existing decoder hasn't even started
// yet.) Trigger decoding so it'll be available next time.
MOZ_ASSERT(aPlaybackType != PlaybackType::eAnimated ||
gfxPrefs::ImageMemAnimatedDiscardable() ||
!mAnimationState || mAnimationState->KnownFrameCount() < 1,
"Animated frames should be locked");
Decode(requestedSize, aFlags, aPlaybackType);
// If we can sync decode, we should already have the frame.
if (aFlags & FLAG_SYNC_DECODE) {
result = LookupFrameInternal(requestedSize, aFlags, aPlaybackType);
}
}
if (!result) {
// We still weren't able to get a frame. Give up.
return DrawableSurface();
}
if (result.Surface()->GetCompositingFailed()) {
return DrawableSurface();
}
MOZ_ASSERT(!result.Surface()->GetIsPaletted(),
"Should not have a paletted frame");
// Sync decoding guarantees that we got the frame, but if it's owned by an
// async decoder that's currently running, the contents of the frame may not
// be available yet. Make sure we get everything.
if (mHasSourceData && (aFlags & FLAG_SYNC_DECODE)) {
result.Surface()->WaitUntilFinished();
}
// If we could have done some decoding in this function we need to check if
// that decoding encountered an error and hence aborted the surface. We want
// to avoid calling IsAborted if we weren't passed any sync decode flag because
// IsAborted acquires the monitor for the imgFrame.
if (aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST) &&
result.Surface()->IsAborted()) {
return DrawableSurface();
}
return Move(result.Surface());
}
bool
RasterImage::IsOpaque()
{
if (mError) {
return false;
}
Progress progress = mProgressTracker->GetProgress();
// If we haven't yet finished decoding, the safe answer is "not opaque".
if (!(progress & FLAG_DECODE_COMPLETE)) {
return false;
}
// Other, we're opaque if FLAG_HAS_TRANSPARENCY is not set.
return !(progress & FLAG_HAS_TRANSPARENCY);
}
NS_IMETHODIMP_(bool)
RasterImage::WillDrawOpaqueNow()
{
if (!IsOpaque()) {
return false;
}
if (mAnimationState && !gfxPrefs::ImageMemAnimatedDiscardable()) {
// We never discard frames of animated images.
return true;
}
// If we are not locked our decoded data could get discard at any time (ie
// between the call to this function and when we are asked to draw), so we
// have to return false if we are unlocked.
if (IsUnlocked()) {
return false;
}
LookupResult result =
SurfaceCache::LookupBestMatch(ImageKey(this),
RasterSurfaceKey(mSize,
DefaultSurfaceFlags(),
PlaybackType::eStatic));
MatchType matchType = result.Type();
if (matchType == MatchType::NOT_FOUND || matchType == MatchType::PENDING ||
!result.Surface()->IsFinished()) {
return false;
}
return true;
}
void
RasterImage::OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey)
{
MOZ_ASSERT(mProgressTracker);
bool animatedFramesDiscarded =
mAnimationState && aSurfaceKey.Playback() == PlaybackType::eAnimated;
RefPtr<RasterImage> image = this;
NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
image->OnSurfaceDiscardedInternal(animatedFramesDiscarded);
}));
}
void
RasterImage::OnSurfaceDiscardedInternal(bool aAnimatedFramesDiscarded)
{
MOZ_ASSERT(NS_IsMainThread());
if (aAnimatedFramesDiscarded && mAnimationState) {
MOZ_ASSERT(gfxPrefs::ImageMemAnimatedDiscardable());
mAnimationState->UpdateState(mAnimationFinished, this, mSize);
}
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 GetFrameInternal(mSize, aWhichFrame, aFlags).second().forget();
}
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
RasterImage::GetFrameAtSize(const IntSize& aSize,
uint32_t aWhichFrame,
uint32_t aFlags)
{
return GetFrameInternal(aSize, aWhichFrame, aFlags).second().forget();
}
Pair<DrawResult, RefPtr<SourceSurface>>
RasterImage::GetFrameInternal(const IntSize& aSize,
uint32_t aWhichFrame,
uint32_t aFlags)
{
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE);
if (aSize.IsEmpty()) {
return MakePair(DrawResult::BAD_ARGS, RefPtr<SourceSurface>());
}
if (aWhichFrame > FRAME_MAX_VALUE) {
return MakePair(DrawResult::BAD_ARGS, RefPtr<SourceSurface>());
}
if (mError) {
return MakePair(DrawResult::BAD_IMAGE, RefPtr<SourceSurface>());
}
// Get the frame. If it's not there, it's probably the caller's fault for
// not waiting for the data to be loaded from the network or not passing
// FLAG_SYNC_DECODE.
DrawableSurface surface =
LookupFrame(aSize, aFlags, ToPlaybackType(aWhichFrame));
if (!surface) {
// The OS threw this frame away and we couldn't redecode it.
return MakePair(DrawResult::TEMPORARY_ERROR, RefPtr<SourceSurface>());
}
RefPtr<SourceSurface> sourceSurface = surface->GetSourceSurface();
if (!surface->IsFinished()) {
return MakePair(DrawResult::INCOMPLETE, Move(sourceSurface));
}
return MakePair(DrawResult::SUCCESS, Move(sourceSurface));
}
Pair<DrawResult, RefPtr<layers::Image>>
RasterImage::GetCurrentImage(ImageContainer* aContainer, uint32_t aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aContainer);
DrawResult drawResult;
RefPtr<SourceSurface> surface;
Tie(drawResult, surface) =
GetFrameInternal(mSize, FRAME_CURRENT, aFlags | FLAG_ASYNC_NOTIFY);
if (!surface) {
// The OS threw out some or all of our buffer. We'll need to wait for the
// redecode (which was automatically triggered by GetFrame) to complete.
return MakePair(drawResult, RefPtr<layers::Image>());
}
RefPtr<layers::Image> image = new layers::SourceSurfaceImage(surface);
return MakePair(drawResult, Move(image));
}
NS_IMETHODIMP_(bool)
RasterImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
{
int32_t maxTextureSize = aManager->GetMaxTextureSize();
if (!mHasSize ||
mSize.width > maxTextureSize ||
mSize.height > maxTextureSize) {
return false;
}
return true;
}
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aManager);
MOZ_ASSERT((aFlags & ~(FLAG_SYNC_DECODE |
FLAG_SYNC_DECODE_IF_FAST |
FLAG_ASYNC_NOTIFY))
== FLAG_NONE,
"Unsupported flag passed to GetImageContainer");
int32_t maxTextureSize = aManager->GetMaxTextureSize();
if (!mHasSize ||
mSize.width > maxTextureSize ||
mSize.height > maxTextureSize) {
return nullptr;
}
if (IsUnlocked() && mProgressTracker) {
mProgressTracker->OnUnlockedDraw();
}
RefPtr<layers::ImageContainer> container = mImageContainer.get();
bool mustRedecode =
(aFlags & (FLAG_SYNC_DECODE | FLAG_SYNC_DECODE_IF_FAST)) &&
mLastImageContainerDrawResult != DrawResult::SUCCESS &&
mLastImageContainerDrawResult != DrawResult::BAD_IMAGE;
if (container && !mustRedecode) {
return container.forget();
}
// We need a new ImageContainer, so create one.
container = LayerManager::CreateImageContainer();
DrawResult drawResult;
RefPtr<layers::Image> image;
Tie(drawResult, image) = GetCurrentImage(container, aFlags);
if (!image) {
return nullptr;
}
// |image| holds a reference to a SourceSurface which in turn holds a lock on
// the current frame's VolatileBuffer, ensuring that it doesn't get freed as
// long as the layer system keeps this ImageContainer alive.
AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(),
mLastFrameID++,
mImageProducerID));
container->SetCurrentImagesInTransaction(imageList);
mLastImageContainerDrawResult = drawResult;
mImageContainer = container;
return container.forget();
}
void
RasterImage::UpdateImageContainer()
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<layers::ImageContainer> container = mImageContainer.get();
if (!container) {
return;
}
DrawResult drawResult;
RefPtr<layers::Image> image;
Tie(drawResult, image) = GetCurrentImage(container, FLAG_NONE);
if (!image) {
return;
}
mLastImageContainerDrawResult = drawResult;
AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(ImageContainer::NonOwningImage(image, TimeStamp(),
mLastFrameID++,
mImageProducerID));
container->SetCurrentImages(imageList);
}
size_t
RasterImage::SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) const
{
return mSourceBuffer->SizeOfIncludingThisWithComputedFallback(aMallocSizeOf);
}
void
RasterImage::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
MallocSizeOf aMallocSizeOf) const
{
SurfaceCache::CollectSizeOfSurfaces(ImageKey(this), aCounters, aMallocSizeOf);
if (mFrameAnimator) {
mFrameAnimator->CollectSizeOfCompositingSurfaces(aCounters, aMallocSizeOf);
}
}
bool
RasterImage::SetMetadata(const ImageMetadata& aMetadata,
bool aFromMetadataDecode)
{
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return true;
}
if (aMetadata.HasSize()) {
IntSize size = aMetadata.GetSize();
if (size.width < 0 || size.height < 0) {
NS_WARNING("Image has negative intrinsic size");
DoError();
return true;
}
MOZ_ASSERT(aMetadata.HasOrientation());
Orientation orientation = aMetadata.GetOrientation();
// If we already have a size, check the new size against the old one.
if (mHasSize && (size != mSize || orientation != mOrientation)) {
NS_WARNING("Image changed size or orientation on redecode! "
"This should not happen!");
DoError();
return true;
}
// Set the size and flag that we have it.
mSize = size;
mOrientation = orientation;
mHasSize = true;
}
if (mHasSize && aMetadata.HasAnimation() && !mAnimationState) {
// We're becoming animated, so initialize animation stuff.
mAnimationState.emplace(mAnimationMode);
mFrameAnimator = MakeUnique<FrameAnimator>(this, mSize);
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.
mHasSourceData = true;
// Let decoders know that there won't be any more data coming.
mSourceBuffer->Complete(aStatus);
// Allow a synchronous metadata decode if mSyncLoad was set, or if we're
// running on a single thread (in which case waiting for the async metadata
// decoder could delay this image's load event quite a bit), or if this image
// is transient.
bool canSyncDecodeMetadata = mSyncLoad || mTransient ||
DecodePool::NumberOfCores() < 2;
if (canSyncDecodeMetadata && !mHasSize) {
// We're loading this image synchronously, so it needs to be usable after
// this call returns. Since we haven't gotten our size yet, we need to do a
// synchronous metadata decode here.
DecodeMetadata(FLAG_SYNC_DECODE);
}
// Determine our final status, giving precedence to Necko failure codes. We
// check after running the metadata decode in case it triggered an error.
nsresult finalStatus = mError ? NS_ERROR_FAILURE : NS_OK;
if (NS_FAILED(aStatus)) {
finalStatus = aStatus;
}
// If loading failed, report an error.
if (NS_FAILED(finalStatus)) {
DoError();
}
Progress loadProgress = LoadCompleteProgress(aLastPart, mError, finalStatus);
if (!mHasSize && !mError) {
// We don't have our size yet, so we'll fire the load event in SetSize().
MOZ_ASSERT(!canSyncDecodeMetadata,
"Firing load async after metadata sync decode?");
NotifyProgress(FLAG_ONLOAD_BLOCKED);
mLoadProgress = Some(loadProgress);
return finalStatus;
}
NotifyForLoadEvent(loadProgress);
return finalStatus;
}
void
RasterImage::NotifyForLoadEvent(Progress aProgress)
{
MOZ_ASSERT(mHasSize || mError, "Need to know size before firing load event");
MOZ_ASSERT(!mHasSize ||
(mProgressTracker->GetProgress() & FLAG_SIZE_AVAILABLE),
"Should have notified that the size is available if we have it");
// If we encountered an error, make sure we notify for that as well.
if (mError) {
aProgress |= FLAG_HAS_ERROR;
}
// Notify our listeners, which will fire this image's load event.
NotifyProgress(aProgress);
}
nsresult
RasterImage::OnImageDataAvailable(nsIRequest*,
nsISupports*,
nsIInputStream* aInputStream,
uint64_t,
uint32_t aCount)
{
nsresult rv = mSourceBuffer->AppendFromInputStream(aInputStream, aCount);
if (NS_FAILED(rv)) {
DoError();
}
return rv;
}
nsresult
RasterImage::SetSourceSizeHint(uint32_t aSizeHint)
{
return mSourceBuffer->ExpectLength(aSizeHint);
}
/********* Methods to implement lazy allocation of nsIProperties object *******/
NS_IMETHODIMP
RasterImage::Get(const char* prop, const nsIID& iid, void** result)
{
if (!mProperties) {
return NS_ERROR_FAILURE;
}
return mProperties->Get(prop, iid, result);
}
NS_IMETHODIMP
RasterImage::Set(const char* prop, nsISupports* value)
{
if (!mProperties) {
mProperties = do_CreateInstance("@mozilla.org/properties;1");
}
if (!mProperties) {
return NS_ERROR_OUT_OF_MEMORY;