1 /*
2 * Copyright 2016 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
8 #include "gm.h"
9
10 #include "Resources.h"
11 #include "SkCanvas.h"
12 #include "SkData.h"
13 #include "SkImage.h"
14 #include "SkImageEncoderPriv.h"
15 #include "SkJpegEncoder.h"
16 #include "SkPngEncoder.h"
17 #include "SkWebpEncoder.h"
18
19 namespace skiagm {
20
21 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
22 static SkEncodedImageFormat kTypes[] {
23 SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kGIF,
24 SkEncodedImageFormat::kBMP, SkEncodedImageFormat::kICO,
25 };
26 #elif defined(SK_BUILD_FOR_WIN)
27 // Use PNG multiple times because our WIC encoder does not support GIF, BMP, or ICO.
28 static SkEncodedImageFormat kTypes[] {
29 SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kPNG,
30 SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
31 };
32 #else
33 // Use WEBP in place of GIF. Use PNG two extra times. We don't support GIF, BMP, or ICO.
34 static SkEncodedImageFormat kTypes[] {
35 SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kWEBP,
36 SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
37 };
38 #endif
39
encode_data(SkEncodedImageFormat type,const SkBitmap & bitmap)40 static sk_sp<SkData> encode_data(SkEncodedImageFormat type, const SkBitmap& bitmap) {
41 SkPixmap src;
42 if (!bitmap.peekPixels(&src)) {
43 return nullptr;
44 }
45 SkDynamicMemoryWStream buf;
46 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
47 return SkEncodeImageWithCG(&buf, src, type) ? buf.detachAsData() : nullptr;
48 #elif defined(SK_BUILD_FOR_WIN)
49 return SkEncodeImageWithWIC(&buf, src, type, 100) ? buf.detachAsData() : nullptr;
50 #else
51 switch (type) {
52 case SkEncodedImageFormat::kPNG: {
53 bool success = SkPngEncoder::Encode(&buf, src, SkPngEncoder::Options());
54 return success ? buf.detachAsData() : nullptr;
55 }
56 case SkEncodedImageFormat::kJPEG: {
57 bool success = SkJpegEncoder::Encode(&buf, src, SkJpegEncoder::Options());
58 return success ? buf.detachAsData() : nullptr;
59 }
60 case SkEncodedImageFormat::kWEBP: {
61 bool success = SkWebpEncoder::Encode(&buf, src, SkWebpEncoder::Options());
62 return success ? buf.detachAsData() : nullptr;
63 }
64 default:
65 SkASSERT(false);
66 return nullptr;
67 }
68 #endif
69 }
70
71 class EncodePlatformGM : public GM {
72 public:
EncodePlatformGM()73 EncodePlatformGM() {}
74
75 protected:
onShortName()76 SkString onShortName() override {
77 return SkString("encode-platform");
78 }
79
onISize()80 SkISize onISize() override {
81 return SkISize::Make(256 * SK_ARRAY_COUNT(kTypes), 256 * 3);
82 }
83
onDraw(SkCanvas * canvas)84 void onDraw(SkCanvas* canvas) override {
85 SkBitmap opaqueBm, premulBm, unpremulBm;
86
87 if (!GetResourceAsBitmap("images/mandrill_256.png", &opaqueBm)) {
88 return;
89 }
90 SkBitmap tmp;
91 if (!GetResourceAsBitmap("images/yellow_rose.png", &tmp)) {
92 return;
93 }
94 tmp.extractSubset(&premulBm, SkIRect::MakeWH(256, 256));
95 tmp.reset();
96 unpremulBm.allocPixels(premulBm.info().makeAlphaType(kUnpremul_SkAlphaType));
97 SkAssertResult(premulBm.readPixels(unpremulBm.pixmap()));
98
99 for (SkEncodedImageFormat type : kTypes) {
100 auto opaqueImage = SkImage::MakeFromEncoded(encode_data(type, opaqueBm));
101 auto premulImage = SkImage::MakeFromEncoded(encode_data(type, premulBm));
102 auto unpremulImage = SkImage::MakeFromEncoded(encode_data(type, unpremulBm));
103
104 canvas->drawImage(opaqueImage.get(), 0.0f, 0.0f);
105 canvas->drawImage(premulImage.get(), 0.0f, 256.0f);
106 canvas->drawImage(unpremulImage.get(), 0.0f, 512.0f);
107
108 canvas->translate(256.0f, 0.0f);
109 }
110 }
111
112 private:
113 typedef GM INHERITED;
114 };
115
116 DEF_GM( return new EncodePlatformGM; )
117 }
118
