No known clients (CanvasKit, Android) want to ignore the exif
orientation in an animation.
A follow-on CL will deprecate SkAndroidCodec::ExifOrientation, leaving
it up to the client (e.g. SkAnimatedImage, hwui/ImageDecoder) to
handle the orientation. Add SkEncodedOriginSwapsWidthHeight to assist
clients to do so.
Update stoplight_animated_image GM. It previously showed using
SkAnimatedImage without respecting the orientation, which is no longer
supported. The new version replaces the left half of the image with the
right.
Remove assert that is no longer true. Originally, an SkAnimatedImage was
"simple" if it did not have a crop or postProcessor. This is no longer
true if has an exif orientation. Add a test that calls the simple
constructor and verifies it does not crash.
Change-Id: I421fd02700f220fb90458cd03c4431dee7daf399
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/344762
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Bug: skia:10914
Bug: b/163595585
In a WebP image, it is possible to combine animation with an EXIF
orientation. While SkAndroidCodec attempts to handle orientation itself
by decoding into temporary memory and then drawing through a matrix,
this doesn't work directly when compositing a P-frame into a prior
frame. SkAnimatedImage already uses an SkMatrix to handle cropping and
scaling, so update that matrix to include the orientation.
Make SkAnimatedImage a friend of SkAndroidCodec. This allows the former
to have the same ExifOrientationBehavior specified by the latter, and to
recreate the latter so it does not try to handle the orientation itself.
Clip SkAnimatedImage to its bounds. Android's AnimatedImageDrawable
performs its own clip, but this makes a crop rect work for other
clients.
Update getCurrentFrame to take cropping, scaling, and orientation into
account. This method is used by CanvasKit, which does not use cropping
or scaling, but will now properly orient an animation with an EXIF
orientation.
Add a GM that exercises the various combinations of ways SkAnimatedImage
can be used:
- via newPictureSnapshot (as in Android) versus getCurrentFrame
- scaling down to a dimension that can be output from the
SkAndroidCodec, versus up, which SkAnimatedImage scales
- with a crop rect
- with a post processor
Change-Id: If1854e9aea23fc4afddf75d39132b38e3fbc6071
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/333223
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
