| /* |
| * Copyright (C) 2012 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 "CompositionSamplingListener" |
| |
| #include "android_util_Binder.h" |
| #include "core_jni_helpers.h" |
| |
| #include <nativehelper/JNIHelp.h> |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <android_runtime/Log.h> |
| #include <utils/Log.h> |
| #include <utils/RefBase.h> |
| #include <binder/IServiceManager.h> |
| |
| #include <gui/IRegionSamplingListener.h> |
| #include <gui/ISurfaceComposer.h> |
| #include <gui/SurfaceComposerClient.h> |
| #include <ui/Rect.h> |
| |
| namespace android { |
| |
| namespace { |
| |
| struct { |
| jclass mClass; |
| jmethodID mDispatchOnSampleCollected; |
| } gListenerClassInfo; |
| |
| struct CompositionSamplingListener : public BnRegionSamplingListener { |
| CompositionSamplingListener(JNIEnv* env, jobject listener) |
| : mListener(env->NewWeakGlobalRef(listener)) {} |
| |
| void onSampleCollected(float medianLuma) override { |
| JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| LOG_ALWAYS_FATAL_IF(env == nullptr, "Unable to retrieve JNIEnv in onSampleCollected."); |
| |
| jobject listener = env->NewGlobalRef(mListener); |
| if (listener == NULL) { |
| // Weak reference went out of scope |
| return; |
| } |
| env->CallStaticVoidMethod(gListenerClassInfo.mClass, |
| gListenerClassInfo.mDispatchOnSampleCollected, listener, |
| static_cast<jfloat>(medianLuma)); |
| env->DeleteGlobalRef(listener); |
| |
| if (env->ExceptionCheck()) { |
| ALOGE("CompositionSamplingListener.onSampleCollected() failed."); |
| LOGE_EX(env); |
| env->ExceptionClear(); |
| } |
| } |
| |
| protected: |
| virtual ~CompositionSamplingListener() { |
| JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| env->DeleteWeakGlobalRef(mListener); |
| } |
| |
| private: |
| jweak mListener; |
| }; |
| |
| jlong nativeCreate(JNIEnv* env, jclass clazz, jobject obj) { |
| CompositionSamplingListener* listener = new CompositionSamplingListener(env, obj); |
| listener->incStrong((void*)nativeCreate); |
| return reinterpret_cast<jlong>(listener); |
| } |
| |
| void nativeDestroy(JNIEnv* env, jclass clazz, jlong ptr) { |
| CompositionSamplingListener* listener = reinterpret_cast<CompositionSamplingListener*>(ptr); |
| listener->decStrong((void*)nativeCreate); |
| } |
| |
| void nativeRegister(JNIEnv* env, jclass clazz, jlong ptr, jobject stopLayerTokenObj, |
| jint left, jint top, jint right, jint bottom) { |
| sp<CompositionSamplingListener> listener = reinterpret_cast<CompositionSamplingListener*>(ptr); |
| sp<IBinder> stopLayerHandle = ibinderForJavaObject(env, stopLayerTokenObj); |
| |
| if (SurfaceComposerClient::addRegionSamplingListener( |
| Rect(left, top, right, bottom), stopLayerHandle, listener) != OK) { |
| constexpr auto error_msg = "Couldn't addRegionSamplingListener"; |
| ALOGE(error_msg); |
| jniThrowRuntimeException(env, error_msg); |
| } |
| } |
| |
| void nativeUnregister(JNIEnv* env, jclass clazz, jlong ptr) { |
| sp<CompositionSamplingListener> listener = reinterpret_cast<CompositionSamplingListener*>(ptr); |
| |
| if (SurfaceComposerClient::removeRegionSamplingListener(listener) != OK) { |
| constexpr auto error_msg = "Couldn't removeRegionSamplingListener"; |
| ALOGE(error_msg); |
| jniThrowRuntimeException(env, error_msg); |
| } |
| } |
| |
| const JNINativeMethod gMethods[] = { |
| /* name, signature, funcPtr */ |
| { "nativeCreate", "(Landroid/view/CompositionSamplingListener;)J", |
| (void*)nativeCreate }, |
| { "nativeDestroy", "(J)V", |
| (void*)nativeDestroy }, |
| { "nativeRegister", "(JLandroid/os/IBinder;IIII)V", |
| (void*)nativeRegister }, |
| { "nativeUnregister", "(J)V", |
| (void*)nativeUnregister } |
| }; |
| |
| } // namespace |
| |
| int register_android_view_CompositionSamplingListener(JNIEnv* env) { |
| int res = jniRegisterNativeMethods(env, "android/view/CompositionSamplingListener", |
| gMethods, NELEM(gMethods)); |
| LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods."); |
| |
| jclass clazz = env->FindClass("android/view/CompositionSamplingListener"); |
| gListenerClassInfo.mClass = MakeGlobalRefOrDie(env, clazz); |
| gListenerClassInfo.mDispatchOnSampleCollected = env->GetStaticMethodID( |
| clazz, "dispatchOnSampleCollected", "(Landroid/view/CompositionSamplingListener;F)V"); |
| return 0; |
| } |
| |
| } // namespace android |