text: /*
   * Copyright 2016 Google Inc.
   *
   * Use of this source code is governed by a BSD-style license that can be
   * found in the LICENSE file.
   */
  
  #include "gm.h"
  #include "Resources.h"
  #include "SkCodec.h"
  #include "SkImage.h"
  
  namespace skiagm {
  
  class BitmapImageGM : public GM {
  public:
      BitmapImageGM() {}
  
  protected:
  
      SkString onShortName() override {
          return SkString("bitmap-image-srgb-legacy");
      }
  
      SkISize onISize() override {
          return SkISize::Make(2*kSize, 2*kSize);
      }
  
      void onDraw(SkCanvas* canvas) override {
          // Create image.
          const char* path = "mandrill_512_q075.jpg";
          sk_sp<SkImage> image = GetResourceAsImage(path);
          if (!image) {
              SkDebugf("Failure: Is the resource path set properly?");
              return;
          }
  
          // Create matching bitmap.
          std::unique_ptr<SkCodec> codec(SkCodec::NewFromStream(GetResourceAsStream(path)));
          SkBitmap bitmap;
          bitmap.allocPixels(codec->getInfo());
          codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes());
  
          // The GM will be displayed in a 2x2 grid.
          // The top two squares show an sRGB image, then bitmap, drawn to a legacy canvas.
          SkImageInfo linearInfo = SkImageInfo::MakeN32(2*kSize, kSize, kOpaque_SkAlphaType);
          SkBitmap legacyBMCanvas;
          legacyBMCanvas.allocPixels(linearInfo);
          SkCanvas legacyCanvas(legacyBMCanvas);
          legacyCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
          legacyCanvas.translate(SkScalar(kSize), 0.0f);
          legacyCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
          canvas->drawBitmap(legacyBMCanvas, 0.0f, 0.0f, nullptr);
          canvas->translate(0.0f, SkScalar(kSize));
  
          // The bottom two squares show an sRGB image, then bitmap, drawn to a srgb canvas.
          SkImageInfo srgbInfo = SkImageInfo::MakeS32(2*kSize, kSize, kOpaque_SkAlphaType);
          SkBitmap srgbBMCanvas;
          srgbBMCanvas.allocPixels(srgbInfo);
          SkCanvas srgbCanvas(srgbBMCanvas);
          srgbCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
          srgbCanvas.translate(SkScalar(kSize), 0.0f);
          srgbCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
          canvas->drawBitmap(srgbBMCanvas, 0.0f, 0.0f, nullptr);
      }
  
  private:
      static constexpr int kSize = 512;
  
      typedef GM INHERITED;
  };
  
  //////////////////////////////////////////////////////////////////////////////
  
  static GM* MyFactory(void*) { return new BitmapImageGM; }
  static GMRegistry reg(MyFactory);
  
  }
  