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Add Java and JNI WindowInfosChangedListener hooks to register with SCC

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Bug: 188792659
Test: Existing tests pass
Change-Id: I0a6fa58e1c8648bf1d9d30f5e2c59e056a07cb88
This commit is contained in:
chaviw
2021-06-09 15:14:15 -05:00
parent 5214873aa8
commit 296c6554a0
9 changed files with 311 additions and 6 deletions
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63
core/java/android/window/WindowInfosListener.java Normal file
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@@ -0,0 +1,63 @@
/*
* 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();
}

2
core/jni/Android.bp
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@@ -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: [

3
core/jni/AndroidRuntime.cpp
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@@ -207,6 +207,7 @@ 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";
@@ -1649,6 +1650,8 @@ 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),
};
/*

1
core/jni/OWNERS
View File

@@ -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

19
core/jni/android_hardware_input_InputApplicationHandle.cpp
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@@ -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");

3
core/jni/android_hardware_input_InputApplicationHandle.h
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@@ -42,6 +42,9 @@ private:
extern std::shared_ptr<InputApplicationHandle> android_view_InputApplicationHandle_getHandle(
JNIEnv* env, jobject inputApplicationHandleObj);
extern jobject android_view_InputApplicationHandle_fromInputApplicationInfo(
JNIEnv* env, gui::InputApplicationInfo inputApplicationInfo);
} // namespace android
#endif // _ANDROID_VIEW_INPUT_APPLICATION_HANDLE_H

89
core/jni/android_hardware_input_InputWindowHandle.cpp
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@@ -27,6 +27,7 @@
#include <utils/threads.h>
#include <gui/WindowInfo.h>
#include "SkRegion.h"
#include "android_hardware_input_InputApplicationHandle.h"
#include "android_util_Binder.h"
#include "core_jni_helpers.h"
@@ -44,6 +45,8 @@ struct WeakRefHandleField {
};
static struct {
jclass clazz;
jmethodID ctor;
jfieldID ptr;
jfieldID inputApplicationHandle;
jfieldID token;
@@ -69,11 +72,16 @@ static struct {
jfieldID packageName;
jfieldID inputFeatures;
jfieldID displayId;
jfieldID portalToDisplayId;
jfieldID replaceTouchableRegionWithCrop;
WeakRefHandleField touchableRegionSurfaceControl;
} gInputWindowHandleClassInfo;
static struct {
jclass clazz;
jmethodID ctor;
jfieldID nativeRegion;
} gRegionClassInfo;
static Mutex gHandleMutex;
@@ -166,8 +174,6 @@ bool NativeInputWindowHandle::updateInfo() {
env->GetIntField(obj, gInputWindowHandleClassInfo.inputFeatures));
mInfo.displayId = env->GetIntField(obj,
gInputWindowHandleClassInfo.displayId);
mInfo.portalToDisplayId = env->GetIntField(obj,
gInputWindowHandleClassInfo.portalToDisplayId);
jobject inputApplicationHandleObj = env->GetObjectField(obj,
gInputWindowHandleClassInfo.inputApplicationHandle);
@@ -236,6 +242,71 @@ sp<NativeInputWindowHandle> android_view_InputWindowHandle_getHandle(
return handle;
}
jobject android_view_InputWindowHandle_fromWindowInfo(JNIEnv* env, gui::WindowInfo windowInfo) {
ScopedLocalRef<jobject>
applicationHandle(env,
android_view_InputApplicationHandle_fromInputApplicationInfo(
env, windowInfo.applicationInfo));
jobject inputWindowHandle =
env->NewObject(gInputWindowHandleClassInfo.clazz, gInputWindowHandleClassInfo.ctor,
applicationHandle.get(), windowInfo.displayId);
env->SetObjectField(inputWindowHandle, gInputWindowHandleClassInfo.token,
javaObjectForIBinder(env, windowInfo.token));
env->SetObjectField(inputWindowHandle, gInputWindowHandleClassInfo.name,
env->NewStringUTF(windowInfo.name.data()));
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.layoutParamsFlags,
static_cast<uint32_t>(windowInfo.flags.get()));
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.layoutParamsType,
static_cast<int32_t>(windowInfo.type));
env->SetLongField(inputWindowHandle, gInputWindowHandleClassInfo.dispatchingTimeoutMillis,
std::chrono::duration_cast<std::chrono::milliseconds>(
windowInfo.dispatchingTimeout)
.count());
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.frameLeft,
windowInfo.frameLeft);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.frameTop, windowInfo.frameTop);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.frameRight,
windowInfo.frameRight);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.frameBottom,
windowInfo.frameBottom);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.surfaceInset,
windowInfo.surfaceInset);
env->SetFloatField(inputWindowHandle, gInputWindowHandleClassInfo.scaleFactor,
windowInfo.globalScaleFactor);
SkRegion* region = new SkRegion();
for (const auto& r : windowInfo.touchableRegion) {
region->op({r.left, r.top, r.right, r.bottom}, SkRegion::kUnion_Op);
}
ScopedLocalRef<jobject> regionObj(env,
env->NewObject(gRegionClassInfo.clazz,
gRegionClassInfo.ctor));
env->SetLongField(regionObj.get(), gRegionClassInfo.nativeRegion,
reinterpret_cast<jlong>(region));
env->SetObjectField(inputWindowHandle, gInputWindowHandleClassInfo.touchableRegion,
regionObj.get());
env->SetBooleanField(inputWindowHandle, gInputWindowHandleClassInfo.visible,
windowInfo.visible);
env->SetBooleanField(inputWindowHandle, gInputWindowHandleClassInfo.focusable,
windowInfo.focusable);
env->SetBooleanField(inputWindowHandle, gInputWindowHandleClassInfo.hasWallpaper,
windowInfo.hasWallpaper);
env->SetBooleanField(inputWindowHandle, gInputWindowHandleClassInfo.paused, windowInfo.paused);
env->SetBooleanField(inputWindowHandle, gInputWindowHandleClassInfo.trustedOverlay,
windowInfo.trustedOverlay);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.touchOcclusionMode,
static_cast<int32_t>(windowInfo.touchOcclusionMode));
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.ownerPid, windowInfo.ownerPid);
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.ownerUid, windowInfo.ownerUid);
env->SetObjectField(inputWindowHandle, gInputWindowHandleClassInfo.packageName,
env->NewStringUTF(windowInfo.packageName.data()));
env->SetIntField(inputWindowHandle, gInputWindowHandleClassInfo.inputFeatures,
static_cast<int32_t>(windowInfo.inputFeatures.get()));
return inputWindowHandle;
}
// --- JNI ---
@@ -278,6 +349,10 @@ int register_android_view_InputWindowHandle(JNIEnv* env) {
jclass clazz;
FIND_CLASS(clazz, "android/view/InputWindowHandle");
gInputWindowHandleClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
GET_METHOD_ID(gInputWindowHandleClassInfo.ctor, clazz, "<init>",
"(Landroid/view/InputApplicationHandle;I)V");
GET_FIELD_ID(gInputWindowHandleClassInfo.ptr, clazz,
"ptr", "J");
@@ -351,9 +426,6 @@ int register_android_view_InputWindowHandle(JNIEnv* env) {
GET_FIELD_ID(gInputWindowHandleClassInfo.displayId, clazz,
"displayId", "I");
GET_FIELD_ID(gInputWindowHandleClassInfo.portalToDisplayId, clazz,
"portalToDisplayId", "I");
GET_FIELD_ID(gInputWindowHandleClassInfo.replaceTouchableRegionWithCrop, clazz,
"replaceTouchableRegionWithCrop", "Z");
@@ -371,6 +443,11 @@ int register_android_view_InputWindowHandle(JNIEnv* env) {
GET_FIELD_ID(gInputWindowHandleClassInfo.touchableRegionSurfaceControl.mNativeObject,
surfaceControlClazz, "mNativeObject", "J");
jclass regionClazz;
FIND_CLASS(regionClazz, "android/graphics/Region");
gRegionClassInfo.clazz = MakeGlobalRefOrDie(env, regionClazz);
GET_METHOD_ID(gRegionClassInfo.ctor, gRegionClassInfo.clazz, "<init>", "()V");
GET_FIELD_ID(gRegionClassInfo.nativeRegion, gRegionClassInfo.clazz, "mNativeRegion", "J");
return 0;
}

3
core/jni/android_hardware_input_InputWindowHandle.h
View File

@@ -40,6 +40,9 @@ private:
extern sp<NativeInputWindowHandle> android_view_InputWindowHandle_getHandle(
JNIEnv* env, jobject inputWindowHandleObj);
extern jobject android_view_InputWindowHandle_fromWindowInfo(JNIEnv* env,
gui::WindowInfo windowInfo);
} // namespace android
#endif // _ANDROID_VIEW_INPUT_WINDOW_HANDLE_H

134
core/jni/android_window_WindowInfosListener.cpp Normal file
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@@ -0,0 +1,134 @@
/*
* Copyright 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.
*/
#define LOG_TAG "WindowInfosListener"
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/Log.h>
#include <gui/SurfaceComposerClient.h>
#include <nativehelper/JNIHelp.h>
#include <utils/Log.h>
#include "android_hardware_input_InputWindowHandle.h"
#include "core_jni_helpers.h"
namespace android {
using gui::WindowInfo;
namespace {
static struct {
jclass clazz;
jmethodID onWindowInfosChanged;
} gListenerClassInfo;
static jclass gInputWindowHandleClass;
struct WindowInfosListener : public gui::WindowInfosListener {
WindowInfosListener(JNIEnv* env, jobject listener)
: mListener(env->NewWeakGlobalRef(listener)) {}
void onWindowInfosChanged(const std::vector<WindowInfo>& windowInfos) override {
JNIEnv* env = AndroidRuntime::getJNIEnv();
LOG_ALWAYS_FATAL_IF(env == nullptr, "Unable to retrieve JNIEnv in onWindowInfoChanged.");
jobject listener = env->NewGlobalRef(mListener);
if (listener == nullptr) {
// Weak reference went out of scope
return;
}
jobjectArray jWindowHandlesArray =
env->NewObjectArray(windowInfos.size(), gInputWindowHandleClass, nullptr);
for (int i = 0; i < windowInfos.size(); i++) {
ScopedLocalRef<jobject>
jWindowHandle(env,
android_view_InputWindowHandle_fromWindowInfo(env,
windowInfos[i]));
env->SetObjectArrayElement(jWindowHandlesArray, i, jWindowHandle.get());
}
env->CallVoidMethod(listener, gListenerClassInfo.onWindowInfosChanged, jWindowHandlesArray);
env->DeleteGlobalRef(listener);
if (env->ExceptionCheck()) {
ALOGE("WindowInfosListener.onWindowInfosChanged() failed.");
LOGE_EX(env);
env->ExceptionClear();
}
}
~WindowInfosListener() override {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->DeleteWeakGlobalRef(mListener);
}
private:
jweak mListener;
};
jlong nativeCreate(JNIEnv* env, jclass clazz, jobject obj) {
WindowInfosListener* listener = new WindowInfosListener(env, obj);
listener->incStrong((void*)nativeCreate);
return reinterpret_cast<jlong>(listener);
}
void destroyNativeService(void* ptr) {
WindowInfosListener* listener = reinterpret_cast<WindowInfosListener*>(ptr);
listener->decStrong((void*)nativeCreate);
}
void nativeRegister(JNIEnv* env, jclass clazz, jlong ptr) {
sp<WindowInfosListener> listener = reinterpret_cast<WindowInfosListener*>(ptr);
SurfaceComposerClient::getDefault()->addWindowInfosListener(listener);
}
void nativeUnregister(JNIEnv* env, jclass clazz, jlong ptr) {
sp<WindowInfosListener> listener = reinterpret_cast<WindowInfosListener*>(ptr);
SurfaceComposerClient::getDefault()->removeWindowInfosListener(listener);
}
static jlong nativeGetFinalizer(JNIEnv* /* env */, jclass /* clazz */) {
return static_cast<jlong>(reinterpret_cast<uintptr_t>(&destroyNativeService));
}
const JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
{"nativeCreate", "(Landroid/window/WindowInfosListener;)J", (void*)nativeCreate},
{"nativeRegister", "(J)V", (void*)nativeRegister},
{"nativeUnregister", "(J)V", (void*)nativeUnregister},
{"nativeGetFinalizer", "()J", (void*)nativeGetFinalizer}};
} // namespace
int register_android_window_WindowInfosListener(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, "android/window/WindowInfosListener", gMethods,
NELEM(gMethods));
LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods.");
jclass clazz = env->FindClass("android/window/WindowInfosListener");
gListenerClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
gListenerClassInfo.onWindowInfosChanged =
env->GetMethodID(gListenerClassInfo.clazz, "onWindowInfosChanged",
"([Landroid/view/InputWindowHandle;)V");
clazz = env->FindClass("android/view/InputWindowHandle");
gInputWindowHandleClass = MakeGlobalRefOrDie(env, clazz);
return 0;
}
} // namespace android