| /* |
| * 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 "SurfaceControlHdrLayerInfoListener" |
| |
| #include <android/gui/BnHdrLayerInfoListener.h> |
| #include <android_runtime/Log.h> |
| #include <gui/ISurfaceComposer.h> |
| #include <gui/SurfaceComposerClient.h> |
| #include <log/log.h> |
| #include <nativehelper/JNIHelp.h> |
| #include <utils/RefBase.h> |
| |
| #include "android_util_Binder.h" |
| #include "core_jni_helpers.h" |
| |
| namespace android { |
| |
| namespace { |
| |
| struct { |
| jclass mClass; |
| jmethodID mOnHdrInfoChanged; |
| } gListenerClassInfo; |
| |
| struct SurfaceControlHdrLayerInfoListener : public gui::BnHdrLayerInfoListener { |
| SurfaceControlHdrLayerInfoListener(JNIEnv* env, jobject listener, jobject displayToken) |
| : mListener(env->NewGlobalRef(listener)), mDisplayToken(env->NewGlobalRef(displayToken)) { |
| LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mVm) != JNI_OK, "Failed to GetJavaVm"); |
| } |
| |
| binder::Status onHdrLayerInfoChanged(int numberOfHdrLayers, int maxW, int maxH, |
| int flags) override { |
| JNIEnv* env = requireEnv(); |
| |
| env->CallVoidMethod(mListener, gListenerClassInfo.mOnHdrInfoChanged, mDisplayToken, |
| numberOfHdrLayers, maxW, maxH, flags); |
| |
| if (env->ExceptionCheck()) { |
| ALOGE("SurfaceControlHdrLayerInfoListener.onHdrInfoChanged() failed."); |
| LOGE_EX(env); |
| env->ExceptionClear(); |
| } |
| return binder::Status::ok(); |
| } |
| |
| status_t startListening() { |
| auto token = ibinderForJavaObject(requireEnv(), mDisplayToken); |
| return SurfaceComposerClient::addHdrLayerInfoListener(token, this); |
| } |
| |
| status_t stopListening() { |
| auto token = ibinderForJavaObject(requireEnv(), mDisplayToken); |
| return SurfaceComposerClient::removeHdrLayerInfoListener(token, this); |
| } |
| |
| protected: |
| virtual ~SurfaceControlHdrLayerInfoListener() { |
| JNIEnv* env = requireEnv(); |
| env->DeleteGlobalRef(mListener); |
| env->DeleteGlobalRef(mDisplayToken); |
| } |
| |
| JNIEnv* requireEnv() { |
| JNIEnv* env = nullptr; |
| if (mVm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) { |
| if (mVm->AttachCurrentThreadAsDaemon(&env, nullptr) != JNI_OK) { |
| LOG_ALWAYS_FATAL("Failed to AttachCurrentThread!"); |
| } |
| } |
| return env; |
| } |
| |
| private: |
| jobject mListener; |
| jobject mDisplayToken; |
| JavaVM* mVm; |
| }; |
| |
| jlong nRegister(JNIEnv* env, jobject jthis, jobject jbinderToken) { |
| auto callback = sp<SurfaceControlHdrLayerInfoListener>::make(env, jthis, jbinderToken); |
| status_t err = callback->startListening(); |
| if (err != OK) { |
| auto errStr = statusToString(err); |
| jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| "Failed to register HdrLayerInfoListener, err = %d (%s)", err, |
| errStr.c_str()); |
| return 0; |
| } |
| SurfaceControlHdrLayerInfoListener* ret = callback.get(); |
| ret->incStrong(0); |
| return static_cast<jlong>(reinterpret_cast<intptr_t>(ret)); |
| } |
| |
| static void destroy(SurfaceControlHdrLayerInfoListener* listener) { |
| listener->stopListening(); |
| listener->decStrong(0); |
| } |
| |
| static jlong nGetDestructor(JNIEnv* env, jobject clazz) { |
| return static_cast<jlong>(reinterpret_cast<intptr_t>(&destroy)); |
| } |
| |
| const JNINativeMethod gMethods[] = { |
| /* name, signature, funcPtr */ |
| {"nGetDestructor", "()J", (void*)nGetDestructor}, |
| {"nRegister", "(Landroid/os/IBinder;)J", (void*)nRegister}}; |
| |
| } // namespace |
| |
| int register_android_view_SurfaceControlHdrLayerInfoListener(JNIEnv* env) { |
| int res = jniRegisterNativeMethods(env, "android/view/SurfaceControlHdrLayerInfoListener", |
| gMethods, NELEM(gMethods)); |
| LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods."); |
| |
| jclass clazz = env->FindClass("android/view/SurfaceControlHdrLayerInfoListener"); |
| gListenerClassInfo.mClass = MakeGlobalRefOrDie(env, clazz); |
| gListenerClassInfo.mOnHdrInfoChanged = |
| env->GetMethodID(clazz, "onHdrInfoChanged", "(Landroid/os/IBinder;IIII)V"); |
| return 0; |
| } |
| |
| } // namespace android |