Merge "Add Java and JNI WindowInfosChangedListener hooks to register with SCC"... (fa445d02) · Commits · e / os / android_frameworks_base

core/java/android/window/WindowInfosListener.java

0 → 100644

+63 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2021 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.window;

		import android.view.InputWindowHandle;

		import libcore.util.NativeAllocationRegistry;

		/**
		* Listener for getting {@link InputWindowHandle} updates from SurfaceFlinger.
		* @hide
		*/
		public abstract class WindowInfosListener {
		private final long mNativeListener;

		public WindowInfosListener() {
		NativeAllocationRegistry registry = NativeAllocationRegistry.createMalloced(
		WindowInfosListener.class.getClassLoader(), nativeGetFinalizer());

		mNativeListener = nativeCreate(this);
		registry.registerNativeAllocation(this, mNativeListener);
		}

		/**
		* Called when WindowInfos in SurfaceFlinger have changed.
		* @param windowHandles Reverse Z ordered array of window information that was on screen,
		* where the first value is the topmost window.
		*/
		public abstract void onWindowInfosChanged(InputWindowHandle[] windowHandles);

		/**
		* Register the WindowInfosListener.
		*/
		public void register() {
		nativeRegister(mNativeListener);
		}

		/**
		* Unregisters the WindowInfosListener.
		*/
		public void unregister() {
		nativeUnregister(mNativeListener);
		}

		private static native long nativeCreate(WindowInfosListener thiz);
		private static native void nativeRegister(long ptr);
		private static native void nativeUnregister(long ptr);
		private static native long nativeGetFinalizer();
		}

core/jni/Android.bp

+2 −0

Original line number	Diff line number	Diff line
		@@ -224,6 +224,7 @@ cc_library_shared {
		"fd_utils.cpp",
		"android_hardware_input_InputWindowHandle.cpp",
		"android_hardware_input_InputApplicationHandle.cpp",
		"android_window_WindowInfosListener.cpp",
		],

		static_libs: [
		@@ -236,6 +237,7 @@ cc_library_shared {
		"libgrallocusage",
		"libscrypt_static",
		"libstatssocket_lazy",
		"libskia",
		],

		shared_libs: [

core/jni/AndroidRuntime.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -208,6 +208,7 @@ extern int register_com_android_internal_os_ZygoteCommandBuffer(JNIEnv *env);
		extern int register_com_android_internal_os_ZygoteInit(JNIEnv *env);
		extern int register_com_android_internal_security_VerityUtils(JNIEnv* env);
		extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
		extern int register_android_window_WindowInfosListener(JNIEnv* env);

		// Namespace for Android Runtime flags applied during boot time.
		static const char* RUNTIME_NATIVE_BOOT_NAMESPACE = "runtime_native_boot";
		@@ -1654,6 +1655,8 @@ static const RegJNIRec gRegJNI[] = {
		REG_JNI(register_com_android_internal_os_KernelCpuUidBpfMapReader),
		REG_JNI(register_com_android_internal_os_KernelSingleProcessCpuThreadReader),
		REG_JNI(register_com_android_internal_os_KernelSingleUidTimeReader),

		REG_JNI(register_android_window_WindowInfosListener),
		};

		/*

core/jni/OWNERS

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ per-file android_view_PointerIcon.* = file:/services/core/java/com/android/serve
		# WindowManager
		per-file android_graphics_BLASTBufferQueue.cpp = file:/services/core/java/com/android/server/wm/OWNERS
		per-file android_view_Surface* = file:/services/core/java/com/android/server/wm/OWNERS
		per-file android_window_WindowInfosListener.cpp = file:/services/core/java/com/android/server/wm/OWNERS

		# Resources
		per-file android_content_res_* = file:/core/java/android/content/res/OWNERS

core/jni/android_hardware_input_InputApplicationHandle.cpp

+19 −0

Original line number	Diff line number	Diff line
		@@ -28,6 +28,8 @@
		namespace android {

		static struct {
		jclass clazz;
		jmethodID ctor;
		jfieldID ptr;
		jfieldID name;
		jfieldID dispatchingTimeoutMillis;
		@@ -101,6 +103,15 @@ std::shared_ptr<InputApplicationHandle> android_view_InputApplicationHandle_getH
		return *handle;
		}

		jobject android_view_InputApplicationHandle_fromInputApplicationInfo(
		JNIEnv* env, gui::InputApplicationInfo inputApplicationInfo) {
		jobject binderObject = javaObjectForIBinder(env, inputApplicationInfo.token);
		ScopedLocalRef<jstring> name(env, env->NewStringUTF(inputApplicationInfo.name.data()));
		return env->NewObject(gInputApplicationHandleClassInfo.clazz,
		gInputApplicationHandleClassInfo.ctor, binderObject, name.get(),
		inputApplicationInfo.dispatchingTimeoutMillis);
		}

		// --- JNI ---

		static void android_view_InputApplicationHandle_nativeDispose(JNIEnv* env, jobject obj) {
		@@ -131,6 +142,10 @@ static const JNINativeMethod gInputApplicationHandleMethods[] = {
		var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
		LOG_FATAL_IF(! (var), "Unable to find field " fieldName);

		#define GET_METHOD_ID(var, clazz, methodName, methodSignature) \
		var = env->GetMethodID(clazz, methodName, methodSignature); \
		LOG_ALWAYS_FATAL_IF(!(var), "Unable to find method " methodName);

		int register_android_view_InputApplicationHandle(JNIEnv* env) {
		int res = jniRegisterNativeMethods(env, "android/view/InputApplicationHandle",
		gInputApplicationHandleMethods, NELEM(gInputApplicationHandleMethods));
		@@ -139,6 +154,10 @@ int register_android_view_InputApplicationHandle(JNIEnv* env) {

		jclass clazz;
		FIND_CLASS(clazz, "android/view/InputApplicationHandle");
		gInputApplicationHandleClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);

		GET_METHOD_ID(gInputApplicationHandleClassInfo.ctor, clazz, "<init>",
		"(Landroid/os/IBinder;Ljava/lang/String;J)V");

		GET_FIELD_ID(gInputApplicationHandleClassInfo.ptr, clazz,
		"ptr", "J");