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[gfx][Skia] Hold mutex while accessing shared SkImage data.

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This commit is contained in:
Moonchild 2020-11-18 22:06:11 +00:00 • committed by roytam1
commit 3cac4d852d
3 changed files with 54 additions and 17 deletions
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19
gfx/2d/SourceSurfaceSkia.cpp
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@ -40,6 +40,25 @@ SourceSurfaceSkia::GetFormat() const
return mFormat;
}
sk_sp<SkImage>
SourceSurfaceSkia::GetImage(Maybe<MutexAutoLock>* aLock) {
// If we were provided a lock object, we can let the caller access
// a shared SkImage and we know it won't go away while the lock is held.
if (aLock) {
// We are locked, so now we can check mDrawTarget.
// If it's null, then we're not shared and we can unlock eagerly.
if (!mDrawTarget) {
aLock->reset();
}
} else {
// Otherwise we need to call DrawTargetWillChange to ensure we have our
// own copy of the SkImage.
DrawTargetWillChange();
}
sk_sp<SkImage> image = mImage;
return image;
}
static sk_sp<SkData>
MakeSkData(unsigned char* aData, const IntSize& aSize, int32_t aStride)
{