Implement seamless rotation mode.
Add a rotation mode which does not require freezing
the screen. For situations like Camera where only small
elements move on screen, this allows for seamless changes
of display orientation. This is achieved by transforming the
windows with their current buffer in the same transaction that
we rotate the display. We set things up so the windows are
frozen this way until they submit buffers in the new orientation.
There is a special case in the Camera window itself, and it's use
of NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY. In this case the buffer
contents are rotated by SurfaceFlinger and will never resize, for these
windows we just need to update the scaling matrix.
Bug: 28823590
Change-Id: I52dc6a86fcb3c08f736f0977ba3975a24fb8136c
diff --git a/core/jni/android_view_SurfaceControl.cpp b/core/jni/android_view_SurfaceControl.cpp
index ff75677..fa1313b 100644
--- a/core/jni/android_view_SurfaceControl.cpp
+++ b/core/jni/android_view_SurfaceControl.cpp
@@ -248,10 +248,10 @@
}
}
-static void nativeSetPositionAppliesWithResize(JNIEnv* env, jclass clazz,
+static void nativeSetGeometryAppliesWithResize(JNIEnv* env, jclass clazz,
jlong nativeObject) {
SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
- status_t err = ctrl->setPositionAppliesWithResize();
+ status_t err = ctrl->setGeometryAppliesWithResize();
if (err < 0 && err != NO_INIT) {
doThrowIAE(env);
}
@@ -626,6 +626,16 @@
return javaObjectForIBinder(env, ctrl->getHandle());
}
+static jboolean nativeGetTransformToDisplayInverse(JNIEnv* env, jclass clazz, jlong nativeObject) {
+ bool out = false;
+ auto ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t status = ctrl->getTransformToDisplayInverse(&out);
+ if (status != NO_ERROR) {
+ return false;
+ }
+ return out;
+}
+
static jobject nativeGetHdrCapabilities(JNIEnv* env, jclass clazz, jobject tokenObject) {
sp<IBinder> token(ibinderForJavaObject(env, tokenObject));
if (token == NULL) return NULL;
@@ -667,8 +677,8 @@
(void*)nativeSetLayer },
{"nativeSetPosition", "(JFF)V",
(void*)nativeSetPosition },
- {"nativeSetPositionAppliesWithResize", "(J)V",
- (void*)nativeSetPositionAppliesWithResize },
+ {"nativeSetGeometryAppliesWithResize", "(J)V",
+ (void*)nativeSetGeometryAppliesWithResize },
{"nativeSetSize", "(JII)V",
(void*)nativeSetSize },
{"nativeSetTransparentRegionHint", "(JLandroid/graphics/Region;)V",
@@ -722,7 +732,9 @@
{"nativeSetOverrideScalingMode", "(JI)V",
(void*)nativeSetOverrideScalingMode },
{"nativeGetHandle", "(J)Landroid/os/IBinder;",
- (void*)nativeGetHandle }
+ (void*)nativeGetHandle },
+ {"nativeGetTransformToDisplayInverse", "(J)Z",
+ (void*)nativeGetTransformToDisplayInverse },
};
int register_android_view_SurfaceControl(JNIEnv* env)