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:
EncodeGM()19     EncodeGM() {}
20 
21 protected:
onShortName()22     SkString onShortName() override {
23         return SkString("encode");
24     }
25 
onISize()26     SkISize onISize() override {
27         return SkISize::Make(1024, 600);
28     }
29 
onDraw(SkCanvas * canvas)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