BootAnimation: Fix boot animation with hidden cutout

We do this by storing the masking inset in a persistent property.
The boot animation then animates itself to where it would be if that
masking inset were applied, then changes the viewport.

For this to work, we also need to make sure the DisplayManagerService
has the right overlay right at the start.

Bug: 112876936
Test: Hide cutout, then reboot. Verify boot animation is smooth.
Change-Id: I3e988b2340b2e0d2be3939bdc6878704c234ccc8

1 files changed, 4 insertions, 0 deletions

diff --git a/cmds/bootanimation/BootAnimation.h b/cmds/bootanimation/BootAnimation.h
index 56e131523bcb..b4699d884681 100644
--- a/cmds/bootanimation/BootAnimation.h
+++ b/cmds/bootanimation/BootAnimation.h
@@ -157,11 +157,15 @@ private:
 
     void checkExit();
 
+    void handleViewport(nsecs_t timestep);
+
     sp<SurfaceComposerClient>       mSession;
     AssetManager mAssets;
     Texture     mAndroid[2];
     int         mWidth;
     int         mHeight;
+    int         mCurrentInset;
+    int         mTargetInset;
     bool        mUseNpotTextures = false;
     EGLDisplay  mDisplay;
     EGLDisplay  mContext;