Make ImageDecoder return animated Drawables
Bug: 63909536
Bug: 63908092
Test: TODO
If ImageDecoder.decodeDrawable is called with an animated image Source
(currently GIF or WebP), return an object of a new (hidden) Drawable
subclass. The new Drawable animates, and it implements Animatable (TODO:
implement Animatable2) so users have some control over the animation.
In addition to the normal features of Drawable, this new one supports
many of the features of ImageDecoder, including scaling, cropping and
PostProcess, which enables circle masks/rounded corners and other
arbitrary after-effects. It does *not* support decoding directly to a
Hardware Bitmap, since it cycles through frames and reuses the same
bitmap memory. But it could be made to use shared memory (TODO?).
TODO: Use a better number for the native allocation registry
TODO: Use the RenderThread to drive the animation, and remove decoding
on the UI thread.
TODO: Add support for modifying the loop count
Android.bp:
- build new AnimatedImageDrawable.cpp
AndroidRuntime.cpp:
- register new native methods
AnimatedImageDrawable.java
AnimatedImageDrawable.cpp:
- new Drawable that handles animated images
Canvas.h, SkiaCanvas.h/.cpp
- New virtual method and implementation for drawing SkAnimatedImages
RecordingCanvas.h/.cpp
- Stub implementation of drawing SkAnimatedImages
ImageDecoder.h/cpp
- Allow code sharing with AnimatedImageDrawable.cpp
- postProcess
- access the ImageDecoder struct
Depends on https://skia-review.googlesource.com/c/skia/+/94660 in Skia.
Change-Id: Ie2ec98d9c52deda4d439c6ef8e5dea2861bb93a3
12 files changed