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      1 /*
      2  * Copyright 2011 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 #include "gm.h"
      8 #include "sk_tool_utils.h"
      9 #include "SkCanvas.h"
     10 #include "SkData.h"
     11 #include "SkImage.h"
     12 #include "SkImageEncoder.h"
     13 #include "Resources.h"
     14 
     15 namespace skiagm {
     16 
     17 class EncodeGM : public GM {
     18 public:
     19     EncodeGM() {}
     20 
     21 protected:
     22     SkString onShortName() override {
     23         return SkString("encode");
     24     }
     25 
     26     SkISize onISize() override {
     27         return SkISize::Make(1024, 600);
     28     }
     29 
     30     void onDraw(SkCanvas* canvas) override {
     31         SkBitmap orig;
     32         GetResourceAsBitmap("images/mandrill_512_q075.jpg", &orig);
     33         sk_sp<SkData> pngData(sk_tool_utils::EncodeImageToData(orig, SkEncodedImageFormat::kPNG, 100));
     34         sk_sp<SkData> jpegData(sk_tool_utils::EncodeImageToData(orig, SkEncodedImageFormat::kJPEG, 100));
     35 
     36         sk_sp<SkImage> pngImage = SkImage::MakeFromEncoded(pngData);
     37         sk_sp<SkImage> jpegImage = SkImage::MakeFromEncoded(jpegData);
     38         canvas->drawImage(pngImage.get(), 0.0f, 0.0f);
     39         canvas->drawImage(jpegImage.get(), 512.0f, 0.0f);
     40 
     41         const char text[] = "Images should look identical.";
     42         canvas->drawText(text, sizeof(text) - 1, 450.0f, 550.0f, SkPaint());
     43     }
     44 
     45 private:
     46     typedef GM INHERITED;
     47 };
     48 
     49 DEF_GM( return new EncodeGM; )
     50 }
     51 
     52 ///////////
     53 
     54 #if 0
     55 DEF_SIMPLE_GM(jpeg_orientation, canvas, 1000, 1000) {
     56     static sk_sp<SkImage> imgs[8];
     57     if (!imgs[0]) {
     58         for (int i = 0; i < 8; ++i) {
     59             SkString path;
     60             path.printf("/skia/orientation/Landscape_%d.jpg", i + 1);
     61             auto stream = SkStream::MakeFromFile(path.c_str());
     62             auto data = SkData::MakeFromStream(stream.get(), stream->getLength());
     63             imgs[i] = SkImage::MakeFromEncoded(data, nullptr);
     64         }
     65     }
     66     canvas->scale(0.25, 0.25);
     67     for (int i = 0; i < 8; ++i) {
     68         SkImage* img = imgs[i].get();
     69         canvas->drawImage(img, 0, 0, nullptr);
     70         canvas->translate(0, img->height());
     71         if (i == 3) {
     72             canvas->translate(img->width(), -4*img->height());
     73         }
     74     }
     75 }
     76 #endif
     77