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/*
* 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.
*/
#include <android/hardware_buffer.h>
#include <android/hardware_buffer_jni.h>
#include <android/native_window.h>
#include <android/native_window_jni.h>
#include <android/surface_control.h>
#include <jni.h>
struct MyWrapper {
MyWrapper(ANativeWindow* parent) {
surfaceControl = ASurfaceControl_createFromWindow(parent, "PenLayer");
}
~MyWrapper() { ASurfaceControl_release(surfaceControl); }
void setBuffer(AHardwareBuffer* buffer) {
ASurfaceTransaction* transaction = ASurfaceTransaction_create();
ASurfaceTransaction_setBuffer(transaction, surfaceControl, buffer);
ASurfaceTransaction_setVisibility(transaction, surfaceControl,
ASURFACE_TRANSACTION_VISIBILITY_SHOW);
ASurfaceTransaction_apply(transaction);
ASurfaceTransaction_delete(transaction);
}
ASurfaceControl* surfaceControl = nullptr;
};
extern "C" JNIEXPORT jlong JNICALL
Java_com_android_test_hwui_FrontBufferedLayer_nCreate(JNIEnv* env, jclass, jobject jSurface) {
ANativeWindow* window = ANativeWindow_fromSurface(env, jSurface);
MyWrapper* wrapper = new MyWrapper(window);
ANativeWindow_release(window);
return reinterpret_cast<jlong>(wrapper);
}
extern "C" JNIEXPORT void JNICALL
Java_com_android_test_hwui_FrontBufferedLayer_nDestroy(JNIEnv*, jclass, jlong ptr) {
MyWrapper* wrapper = reinterpret_cast<MyWrapper*>(ptr);
delete wrapper;
}
extern "C" JNIEXPORT void JNICALL Java_com_android_test_hwui_FrontBufferedLayer_nUpdateBuffer(
JNIEnv* env, jclass, jlong ptr, jobject jbuffer) {
MyWrapper* wrapper = reinterpret_cast<MyWrapper*>(ptr);
AHardwareBuffer* buffer = AHardwareBuffer_fromHardwareBuffer(env, jbuffer);
wrapper->setBuffer(buffer);
}
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