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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "OpenGLRenderer"
     18 
     19 #include "jni.h"
     20 #include "GraphicsJNI.h"
     21 #include <nativehelper/JNIHelp.h>
     22 
     23 #include "core_jni_helpers.h"
     24 #include <android_runtime/android_graphics_SurfaceTexture.h>
     25 
     26 #include <gui/GLConsumer.h>
     27 
     28 #include <Paint.h>
     29 #include <SkBitmap.h>
     30 #include <SkCanvas.h>
     31 #include <SkMatrix.h>
     32 #include <SkXfermode.h>
     33 
     34 #include <DeferredLayerUpdater.h>
     35 #include <LayerRenderer.h>
     36 #include <SkiaShader.h>
     37 #include <Rect.h>
     38 #include <RenderNode.h>
     39 
     40 namespace android {
     41 
     42 using namespace uirenderer;
     43 
     44 static jboolean android_view_HardwareLayer_prepare(JNIEnv* env, jobject clazz,
     45         jlong layerUpdaterPtr, jint width, jint height, jboolean isOpaque) {
     46     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     47     bool changed = false;
     48     changed |= layer->setSize(width, height);
     49     changed |= layer->setBlend(!isOpaque);
     50     return changed;
     51 }
     52 
     53 static void android_view_HardwareLayer_setLayerPaint(JNIEnv* env, jobject clazz,
     54         jlong layerUpdaterPtr, jlong paintPtr) {
     55     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     56     if (layer) {
     57         Paint* paint = reinterpret_cast<Paint*>(paintPtr);
     58         layer->setPaint(paint);
     59     }
     60 }
     61 
     62 static void android_view_HardwareLayer_setTransform(JNIEnv* env, jobject clazz,
     63         jlong layerUpdaterPtr, jlong matrixPtr) {
     64     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     65     SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixPtr);
     66     layer->setTransform(matrix);
     67 }
     68 
     69 static void android_view_HardwareLayer_setSurfaceTexture(JNIEnv* env, jobject clazz,
     70         jlong layerUpdaterPtr, jobject surface, jboolean isAlreadyAttached) {
     71     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     72     sp<GLConsumer> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
     73     layer->setSurfaceTexture(surfaceTexture, !isAlreadyAttached);
     74 }
     75 
     76 static void android_view_HardwareLayer_updateSurfaceTexture(JNIEnv* env, jobject clazz,
     77         jlong layerUpdaterPtr) {
     78     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     79     layer->updateTexImage();
     80 }
     81 
     82 static jint android_view_HardwareLayer_getTexName(JNIEnv* env, jobject clazz,
     83         jlong layerUpdaterPtr) {
     84     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     85     return layer->backingLayer()->getTextureId();
     86 }
     87 
     88 // ----------------------------------------------------------------------------
     89 // JNI Glue
     90 // ----------------------------------------------------------------------------
     91 
     92 const char* const kClassPathName = "android/view/HardwareLayer";
     93 
     94 static JNINativeMethod gMethods[] = {
     95     { "nPrepare",                "(JIIZ)Z",    (void*) android_view_HardwareLayer_prepare },
     96     { "nSetLayerPaint",          "(JJ)V",      (void*) android_view_HardwareLayer_setLayerPaint },
     97     { "nSetTransform",           "(JJ)V",      (void*) android_view_HardwareLayer_setTransform },
     98     { "nSetSurfaceTexture",      "(JLandroid/graphics/SurfaceTexture;Z)V",
     99             (void*) android_view_HardwareLayer_setSurfaceTexture },
    100     { "nUpdateSurfaceTexture",   "(J)V",       (void*) android_view_HardwareLayer_updateSurfaceTexture },
    101 
    102     { "nGetTexName",             "(J)I",       (void*) android_view_HardwareLayer_getTexName },
    103 };
    104 
    105 int register_android_view_HardwareLayer(JNIEnv* env) {
    106     return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
    107 }
    108 
    109 };
    110