1 /* 2 * Copyright (C) 2015 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 #include "TestSceneBase.h" 18 19 class ReadbackFromHardware; 20 21 static TestScene::Registrar _SaveLayer(TestScene::Info{ 22 "readbackFromHBitmap", "Allocates hardware bitmap and readback data from it.", 23 TestScene::simpleCreateScene<ReadbackFromHardware>}); 24 25 class ReadbackFromHardware : public TestScene { 26 public: 27 static sk_sp<Bitmap> createHardwareBitmap() { 28 SkBitmap skBitmap; 29 SkImageInfo info = SkImageInfo::Make(400, 400, kN32_SkColorType, kPremul_SkAlphaType); 30 skBitmap.allocPixels(info); 31 skBitmap.eraseColor(Color::Red_500); 32 SkCanvas canvas(skBitmap); 33 SkPaint paint; 34 paint.setColor(Color::Blue_500); 35 canvas.drawRect(SkRect::MakeXYWH(30, 30, 30, 150), paint); 36 canvas.drawRect(SkRect::MakeXYWH(30, 30, 100, 30), paint); 37 canvas.drawRect(SkRect::MakeXYWH(30, 100, 70, 30), paint); 38 return Bitmap::allocateHardwareBitmap(skBitmap); 39 } 40 41 void createContent(int width, int height, Canvas& canvas) override { 42 canvas.drawColor(Color::White, SkBlendMode::kSrcOver); // background 43 44 sk_sp<Bitmap> hardwareBitmap(createHardwareBitmap()); 45 46 SkBitmap readback; 47 hardwareBitmap->getSkBitmap(&readback); 48 49 SkBitmap canvasBitmap; 50 sk_sp<Bitmap> heapBitmap(TestUtils::createBitmap(hardwareBitmap->width(), 51 hardwareBitmap->height(), &canvasBitmap)); 52 53 SkCanvas skCanvas(canvasBitmap); 54 skCanvas.drawBitmap(readback, 0, 0); 55 canvas.drawBitmap(*heapBitmap, 0, 0, nullptr); 56 57 canvas.drawBitmap(*hardwareBitmap, 0, 500, nullptr); 58 } 59 60 void doFrame(int frameNr) override {} 61 }; 62
