nsresult imgRequestProxy::ChangeOwner(imgRequest *aNewOwner)
{
if (mCanceled)
return NS_OK;
// Were we decoded before?
PRBool wasDecoded = PR_FALSE;
if (mOwner->GetImageStatus() & imgIRequest::STATUS_FRAME_COMPLETE)
wasDecoded = PR_TRUE;
// If we're holding locks, unlock the old image.
// Note that UnlockImage decrements mLocksHeld each time it's called.
PRUint32 oldLockCount = mLocksHeld;
while (mLocksHeld)
UnlockImage();
// Passing false to aNotify means that mListener will still get
// OnStopRequest, if needed.
mOwner->RemoveProxy(this, NS_IMAGELIB_CHANGING_OWNER, PR_FALSE);
mOwner = aNewOwner;
mOwner->AddProxy(this);
// If we were decoded, or if we'd previously requested a decode, request a
// decode on the new image
if (wasDecoded || mDecodeRequested)
mOwner->RequestDecode();
// If we were locked, apply the locks here
for (PRUint32 i = 0; i < oldLockCount; i++)
LockImage();
return NS_OK;
}
EXPORT(IMAGE) CloneImage(IMAGE image)
{
if (!image)
return NULL;
IMAGE clone = CreateImage(image->width, image->height, LockImage(image));
UnlockImage(image, false);
return clone;
}
bool
RasterImage::SetMetadata(const ImageMetadata& aMetadata,
bool aFromMetadataDecode)
{
MOZ_ASSERT(NS_IsMainThread());
if (mError) {
return true;
}
if (aMetadata.HasSize()) {
IntSize size = aMetadata.GetSize();
if (size.width < 0 || size.height < 0) {
NS_WARNING("Image has negative intrinsic size");
DoError();
return true;
}
MOZ_ASSERT(aMetadata.HasOrientation());
Orientation orientation = aMetadata.GetOrientation();
// If we already have a size, check the new size against the old one.
if (mHasSize && (size != mSize || orientation != mOrientation)) {
NS_WARNING("Image changed size or orientation on redecode! "
"This should not happen!");
DoError();
return true;
}
// Set the size and flag that we have it.
mSize = size;
mOrientation = orientation;
mHasSize = true;
}
if (mHasSize && aMetadata.HasAnimation() && !mAnimationState) {
// We're becoming animated, so initialize animation stuff.
mAnimationState.emplace(mAnimationMode);
mFrameAnimator = MakeUnique<FrameAnimator>(this, mSize);
// We don't support discarding animated images (See bug 414259).
// Lock the image and throw away the key.
LockImage();
if (!aFromMetadataDecode) {
// The metadata decode reported that this image isn't animated, but we
// discovered that it actually was during the full decode. This is a
// rare failure that only occurs for corrupt images. To recover, we need
// to discard all existing surfaces and redecode.
return false;
}
}
if (mAnimationState) {
mAnimationState->SetLoopCount(aMetadata.GetLoopCount());
mAnimationState->SetFirstFrameTimeout(aMetadata.GetFirstFrameTimeout());
if (aMetadata.HasLoopLength()) {
mAnimationState->SetLoopLength(aMetadata.GetLoopLength());
}
if (aMetadata.HasFirstFrameRefreshArea()) {
mAnimationState
->SetFirstFrameRefreshArea(aMetadata.GetFirstFrameRefreshArea());
}
}
if (aMetadata.HasHotspot()) {
IntPoint hotspot = aMetadata.GetHotspot();
nsCOMPtr<nsISupportsPRUint32> intwrapx =
do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID);
nsCOMPtr<nsISupportsPRUint32> intwrapy =
do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID);
intwrapx->SetData(hotspot.x);
intwrapy->SetData(hotspot.y);
Set("hotspotX", intwrapx);
Set("hotspotY", intwrapy);
}
return true;
}
