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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 "RasterImage.h"
#include <stdint.h>
#include <algorithm>
#include <utility>
#include "DecodePool.h"
#include "Decoder.h"
#include "FrameAnimator.h"
#include "GeckoProfiler.h"
#include "IDecodingTask.h"
#include "ImageLogging.h"
#include "ImageRegion.h"
#include "LookupResult.h"
#include "OrientedImage.h"
#include "SourceBuffer.h"
#include "SurfaceCache.h"
#include "gfx2DGlue.h"
#include "gfxContext.h"
#include "gfxPlatform.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/Likely.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/RefPtr.h"
#include "mozilla/SizeOfState.h"
#include "mozilla/StaticPrefs_image.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/Tuple.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Scale.h"
#include "nsComponentManagerUtils.h"
#include "nsError.h"
#include "nsIConsoleService.h"
#include "nsIInputStream.h"
#include "nsIScriptError.h"
#include "nsISupportsPrimitives.h"
#include "nsMemory.h"
#include "nsPresContext.h"
#include "nsProperties.h"
#include "prenv.h"
#include "prsystem.h"
#include "WindowRenderer.h"
namespace mozilla {
using namespace gfx;
using namespace layers;
namespace image {
using std::ceil;
using std::min;
#ifndef DEBUG
NS_IMPL_ISUPPORTS(RasterImage, imgIContainer)
#else
NS_IMPL_ISUPPORTS(RasterImage, imgIContainer, imgIContainerDebug)
#endif
//******************************************************************************
RasterImage::RasterImage(nsIURI* aURI /* = nullptr */)
: ImageResource(aURI), // invoke superclass's constructor
mSize(0, 0),
mLockCount(0),
mDecoderType(DecoderType::UNKNOWN),
mDecodeCount(0),
#ifdef DEBUG
mFramesNotified(0),
#endif
mSourceBuffer(MakeNotNull<SourceBuffer*>()) {
}
//******************************************************************************
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);
}
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
StoreDiscardable(!!(aFlags & INIT_FLAG_DISCARDABLE));
StoreWantFullDecode(!!(aFlags & INIT_FLAG_DECODE_IMMEDIATELY));
StoreTransient(!!(aFlags & INIT_FLAG_TRANSIENT));
StoreSyncLoad(!!(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 (!LoadDiscardable()) {
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);
}
#ifdef DEBUG
if (res.mFrameAdvanced) {
mFramesNotified++;
}
#endif
// 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).
if (!res.mDirtyRect.IsEmpty() || res.mFrameAdvanced) {
auto dirtyRect = OrientedIntRect::FromUnknownRect(res.mDirtyRect);
NotifyProgress(NoProgress, dirtyRect);
}
if (res.mAnimationFinished) {
StoreAnimationFinished(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;
}
//******************************************************************************
void RasterImage::MediaFeatureValuesChangedAllDocuments(
const mozilla::MediaFeatureChange& aChange) {}
//******************************************************************************
nsresult RasterImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) {
if (mError) {
return NS_ERROR_FAILURE;
}
aNativeSizes.Clear();
if (mNativeSizes.IsEmpty()) {
aNativeSizes.AppendElement(mSize.ToUnknownSize());
} else {
for (const auto& size : mNativeSizes) {
aNativeSizes.AppendElement(size.ToUnknownSize());
}
}
return NS_OK;
}
//******************************************************************************
size_t RasterImage::GetNativeSizesLength() {
if (mError || !LoadHasSize()) {
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;
}
//******************************************************************************
Maybe<AspectRatio> RasterImage::GetIntrinsicRatio() {
if (mError) {
return Nothing();
}
return Some(AspectRatio::FromSize(mSize.width, mSize.height));
}
NS_IMETHODIMP_(Orientation)
RasterImage::GetOrientation() { return mOrientation; }
NS_IMETHODIMP_(Resolution)
RasterImage::GetResolution() { return mResolution; }
//******************************************************************************
NS_IMETHODIMP
RasterImage::GetType(uint16_t* aType) {
NS_ENSURE_ARG_POINTER(aType);
*aType = imgIContainer::TYPE_RASTER;
return NS_OK;
}
NS_IMETHODIMP
RasterImage::GetProviderId(uint32_t* aId) {
NS_ENSURE_ARG_POINTER(aId);
*aId = ImageResource::GetImageProviderId();
return NS_OK;
}
LookupResult RasterImage::LookupFrameInternal(const OrientedIntSize& aSize,
uint32_t aFlags,
PlaybackType aPlaybackType,
bool aMarkUsed) {
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, aMarkUsed);
}
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.ToUnknownSize(), surfaceFlags,
PlaybackType::eStatic),
aMarkUsed);
}
// We'll return the best match we can find to the requested frame.
return SurfaceCache::LookupBestMatch(
ImageKey(this),
RasterSurfaceKey(aSize.ToUnknownSize(), surfaceFlags,
PlaybackType::eStatic),
aMarkUsed);
}
LookupResult RasterImage::LookupFrame(const OrientedIntSize& aSize,
uint32_t aFlags,
PlaybackType aPlaybackType,
bool aMarkUsed) {
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;
}
OrientedIntSize 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, aMarkUsed);
if (!result && !LoadHasSize()) {
// We can't request a decode without knowing our intrinsic size. Give up.
return LookupResult(MatchType::NOT_FOUND);
}
// We want to trigger a decode if and only if:
// 1) There is no pending decode
// 2) There is no acceptable size decoded
// 3) The pending decode has not produced a frame yet, a sync decode is
// requested, and we have all the source data. Without the source data, we
// will just trigger another async decode anyways.
//
// TODO(aosmond): We should better handle case 3. We should actually return
// TEMPORARY_ERROR or NOT_READY if we don't have all the source data and a
// sync decode is requested. If there is a pending decode and we have all the
// source data, we should always be able to block on the frame's monitor --
// perhaps this could be accomplished by preallocating the first frame buffer
// when we create the decoder.
const bool syncDecode = aFlags & FLAG_SYNC_DECODE;
const bool avoidRedecode = aFlags & FLAG_AVOID_REDECODE_FOR_SIZE;
if (result.Type() == MatchType::NOT_FOUND ||
(result.Type() == MatchType::SUBSTITUTE_BECAUSE_NOT_FOUND &&
!avoidRedecode) ||
(syncDecode && !avoidRedecode && !result && LoadAllSourceData())) {
// 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 ||
StaticPrefs::image_mem_animated_discardable_AtStartup() ||
!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(!syncDecode && (aFlags & FLAG_HIGH_QUALITY_SCALING));
requestedSize = OrientedIntSize::FromUnknownSize(result.SuggestedSize());
}
bool ranSync = false, failed = false;
Decode(requestedSize, aFlags, aPlaybackType, ranSync, failed);
if (failed) {
result.SetFailedToRequestDecode();
}
// If we can or did sync decode, we should already have the frame.
if (ranSync || syncDecode) {
result =
LookupFrameInternal(requestedSize, aFlags, aPlaybackType, aMarkUsed);
}
}
if (!result) {
// We still weren't able to get a frame. Give up.
return result;
}
// 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 (LoadAllSourceData() && syncDecode) {
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 = std::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 (!StaticPrefs::image_mem_animated_discardable_AtStartup()) {
// 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.ToUnknownSize(), DefaultSurfaceFlags(),
PlaybackType::eStatic),
/* aMarkUsed = */ false);
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(StaticPrefs::image_mem_animated_discardable_AtStartup());
IntRect rect = mAnimationState->UpdateState(this, mSize.ToUnknownSize());
auto dirtyRect = OrientedIntRect::FromUnknownRect(rect);
NotifyProgress(NoProgress, dirtyRect);
}
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 (!LoadHasBeenDecoded()) {
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.ToUnknownSize(), aWhichFrame, aFlags);
}
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
RasterImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame,
uint32_t aFlags) {
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE);
AutoProfilerImagePaintMarker PROFILER_RAII(this);
#ifdef DEBUG
NotifyDrawingObservers();
#endif
if (aSize.IsEmpty() || aWhichFrame > FRAME_MAX_VALUE || mError) {
return nullptr;
}
auto size = OrientedIntSize::FromUnknownSize(aSize);
// 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(size, aFlags, ToPlaybackType(aWhichFrame),
/* aMarkUsed = */ true);
if (!result) {
// The OS threw this frame away and we couldn't redecode it.
return nullptr;
}
return result.Surface()->GetSourceSurface();
}
NS_IMETHODIMP_(bool)
RasterImage::IsImageContainerAvailable(WindowRenderer* aRenderer,
uint32_t aFlags) {
return LoadHasSize();
}
NS_IMETHODIMP_(ImgDrawResult)
RasterImage::GetImageProvider(WindowRenderer* aRenderer,
const gfx::IntSize& aSize,
const SVGImageContext& aSVGContext,
const Maybe<ImageIntRegion>& aRegion,
uint32_t aFlags,
WebRenderImageProvider** aProvider) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aRenderer);
if (mError) {
return ImgDrawResult::BAD_IMAGE;
}
if (!LoadHasSize()) {
return ImgDrawResult::NOT_READY;
}
if (aSize.IsEmpty()) {
return ImgDrawResult::BAD_ARGS;
}
// We check the minimum size because while we support downscaling, we do not
// support upscaling. If aRequestedSize > mSize, we will never give a larger
// surface than mSize. If mSize > aRequestedSize, and mSize > maxTextureSize,
// we still want to use image containers if aRequestedSize <= maxTextureSize.
int32_t maxTextureSize = aRenderer->GetMaxTextureSize();
if (min(mSize.width, aSize.width) > maxTextureSize ||
min(mSize.height, aSize.height) > maxTextureSize) {
return ImgDrawResult::NOT_SUPPORTED;
}
AutoProfilerImagePaintMarker PROFILER_RAII(this);
#ifdef DEBUG
NotifyDrawingObservers();
#endif
// 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(OrientedIntSize::FromUnknownSize(aSize),
aFlags, PlaybackType::eAnimated,
/* aMarkUsed = */ true);
if (!result) {
// The OS threw this frame away and we couldn't redecode it.
return ImgDrawResult::NOT_READY;
}
if (!result.Surface()->IsFinished()) {
result.Surface().TakeProvider(aProvider);
return ImgDrawResult::INCOMPLETE;
}
result.Surface().TakeProvider(aProvider);
switch (result.Type()) {
case MatchType::SUBSTITUTE_BECAUSE_NOT_FOUND:
case MatchType::SUBSTITUTE_BECAUSE_PENDING:
return ImgDrawResult::WRONG_SIZE;
default:
return ImgDrawResult::SUCCESS;
}
}
size_t RasterImage::SizeOfSourceWithComputedFallback(
SizeOfState& aState) const {
return mSourceBuffer->SizeOfIncludingThisWithComputedFallback(
aState.mMallocSizeOf);
}
bool RasterImage::SetMetadata(const ImageMetadata& aMetadata,
bool aFromMetadataDecode) {
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return true;
}
mResolution = aMetadata.GetResolution();
if (aMetadata.HasSize()) {
auto metadataSize = aMetadata.GetSize();
if (metadataSize.width < 0 || metadataSize.height < 0) {
NS_WARNING("Image has negative intrinsic size");
DoError();
return true;
}
MOZ_ASSERT(aMetadata.HasOrientation());
Orientation orientation = aMetadata.GetOrientation();
// If we already have a size, check the new size against the old one.
if (LoadHasSize() &&
(metadataSize != mSize || orientation != mOrientation)) {
NS_WARNING(
"Image changed size or orientation on redecode! "
"This should not happen!");
DoError();
return true;
}
// Set the size and flag that we have it.
mOrientation = orientation;
mSize = metadataSize;
mNativeSizes.Clear();
for (const auto& nativeSize : aMetadata.GetNativeSizes()) {
mNativeSizes.AppendElement(nativeSize);
}
StoreHasSize(true);
}
if (LoadHasSize() && aMetadata.HasAnimation() && !mAnimationState) {
// We're becoming animated, so initialize animation stuff.
mAnimationState.emplace(mAnimationMode);
mFrameAnimator = MakeUnique<FrameAnimator>(this, mSize.ToUnknownSize());
if (!StaticPrefs::image_mem_animated_discardable_AtStartup()) {
// We don't support discarding animated images (See bug 414259).
// Lock the image and throw away the key.
LockImage();
}
if (!aFromMetadataDecode) {
// The metadata decode reported that this image isn't animated, but we
// discovered that it actually was during the full decode. This is a
// rare failure that only occurs for corrupt images. To recover, we need
// to discard all existing surfaces and redecode.
return false;
}
}
if (mAnimationState) {
mAnimationState->SetLoopCount(aMetadata.GetLoopCount());
mAnimationState->SetFirstFrameTimeout(aMetadata.GetFirstFrameTimeout());
if (aMetadata.HasLoopLength()) {
mAnimationState->SetLoopLength(aMetadata.GetLoopLength());
}
if (aMetadata.HasFirstFrameRefreshArea()) {
mAnimationState->SetFirstFrameRefreshArea(
aMetadata.GetFirstFrameRefreshArea());
}
}
if (aMetadata.HasHotspot()) {
// NOTE(heycam): We shouldn't have any image formats that support both
// orientation and hotspots, so we assert that rather than add code
// to orient the hotspot point correctly.
MOZ_ASSERT(mOrientation.IsIdentity(), "Would need to orient hotspot point");
auto hotspot = aMetadata.GetHotspot();
mHotspot.x = std::max(std::min(hotspot.x.value, mSize.width - 1), 0);
mHotspot.y = std::max(std::min(hotspot.y.value, mSize.height - 1), 0);
}
return true;
}
NS_IMETHODIMP
RasterImage::SetAnimationMode(uint16_t aAnimationMode) {
if (mAnimationState) {
mAnimationState->SetAnimationMode(aAnimationMode);
}
return SetAnimationModeInternal(aAnimationMode);
}
//******************************************************************************
nsresult RasterImage::StartAnimation() {
if (mError) {
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(ShouldAnimate(), "Should not animate!");
// If we're not ready to animate, then set mPendingAnimation, which will cause
// us to start animating if and when we do become ready.
StorePendingAnimation(!mAnimationState ||
mAnimationState->KnownFrameCount() < 1);
if (LoadPendingAnimation()) {
return NS_OK;
}
// Don't bother to animate if we're displaying the first frame forever.
if (mAnimationState->GetCurrentAnimationFrameIndex() == 0 &&
mAnimationState->FirstFrameTimeout() == FrameTimeout::Forever()) {
StoreAnimationFinished(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;
}
StorePendingAnimation(false);
if (mAnimationMode == kDontAnimMode || !mAnimationState ||
mAnimationState->GetCurrentAnimationFrameIndex() == 0) {
return NS_OK;
}
StoreAnimationFinished(false);
if (mAnimating) {
StopAnimation();
}
MOZ_ASSERT(mAnimationState, "Should have AnimationState");
MOZ_ASSERT(mFrameAnimator, "Should have FrameAnimator");
mFrameAnimator->ResetAnimation(*mAnimationState);
IntRect area = mAnimationState->FirstFrameRefreshArea();
NotifyProgress(NoProgress, OrientedIntRect::FromUnknownRect(area));
// Start the animation again. It may not have been running before, if
// mAnimationFinished was true before entering this function.
EvaluateAnimation();
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP_(void)
RasterImage::SetAnimationStartTime(const TimeStamp& aTime) {
if (mError || mAnimationMode == kDontAnimMode || mAnimating ||
!mAnimationState) {
return;
}
mAnimationState->SetAnimationFrameTime(aTime);
}
NS_IMETHODIMP_(float)
RasterImage::GetFrameIndex(uint32_t aWhichFrame) {
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
return (aWhichFrame == FRAME_FIRST || !mAnimationState)
? 0.0f
: mAnimationState->GetCurrentAnimationFrameIndex();
}
NS_IMETHODIMP_(IntRect)
RasterImage::GetImageSpaceInvalidationRect(const IntRect& aRect) {
// Note that we do not transform aRect into an UnorientedIntRect, since
// RasterImage::NotifyProgress notifies all consumers of the image using
// OrientedIntRect values. (This is unlike OrientedImage, which notifies
// using inner image coordinates.)
return aRect;
}
nsresult RasterImage::OnImageDataComplete(nsIRequest*, nsresult aStatus,
bool aLastPart) {
MOZ_ASSERT(NS_IsMainThread());
// Record that we have all the data we're going to get now.
StoreAllSourceData(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 =
LoadSyncLoad() || LoadTransient() || DecodePool::NumberOfCores() < 2;
if (canSyncDecodeMetadata && !LoadHasSize()) {
// 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 (!LoadHasSize() && !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(LoadHasSize() || mError,
"Need to know size before firing load event");
MOZ_ASSERT(
!LoadHasSize() || (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*,
nsIInputStream* aInputStream,
uint64_t, uint32_t aCount) {
nsresult rv = mSourceBuffer->AppendFromInputStream(aInputStream, aCount);
if (NS_SUCCEEDED(rv) && !LoadSomeSourceData()) {
StoreSomeSourceData(true);
if (!LoadSyncLoad()) {
// Create an async metadata decoder and verify we succeed in doing so.
rv = DecodeMetadata(DECODE_FLAGS_DEFAULT);
}
}
if (NS_FAILED(rv)) {
DoError();
}
return rv;
}
nsresult RasterImage::SetSourceSizeHint(uint32_t aSizeHint) {
if (aSizeHint == 0) {
return NS_OK;
}
nsresult rv = mSourceBuffer->ExpectLength(aSizeHint);
if (rv == NS_ERROR_OUT_OF_MEMORY) {
// Flush memory, try to get some back, and try again.
rv = nsMemory::HeapMinimize(true);
if (NS_SUCCEEDED(rv)) {
rv = mSourceBuffer->ExpectLength(aSizeHint);
}
}
return rv;
}
nsresult RasterImage::GetHotspotX(int32_t* aX) {
*aX = mHotspot.x;
return NS_OK;
}
nsresult RasterImage::GetHotspotY(int32_t* aY) {
*aY = mHotspot.y;
return NS_OK;
}
void RasterImage::Discard() {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(CanDiscard(), "Asked to discard but can't");
MOZ_ASSERT(!mAnimationState ||
StaticPrefs::image_mem_animated_discardable_AtStartup(),
"Asked to discard for animated image");
// Delete all the decoded frames.
SurfaceCache::RemoveImage(ImageKey(this));
if (mAnimationState) {
IntRect rect = mAnimationState->UpdateState(this, mSize.ToUnknownSize());
auto dirtyRect = OrientedIntRect::FromUnknownRect(rect);
NotifyProgress(NoProgress, dirtyRect);
}
// Notify that we discarded.
if (mProgressTracker) {
mProgressTracker->OnDiscard();