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| 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 #include "Resources.h" |
| 10 #include "SkCanvas.h" |
| 11 #include "SkData.h" |
| 12 #include "SkImageEncoder.h" |
| 13 #include "SkUnPreMultiply.h" |
| 14 |
| 15 namespace skiagm { |
| 16 |
| 17 static void make_opaque_256(SkBitmap* bitmap) { |
| 18 GetResourceAsBitmap("mandrill_256.png", bitmap); |
| 19 } |
| 20 |
| 21 static void make_premul_256(SkBitmap* bitmap) { |
| 22 SkBitmap tmp; |
| 23 GetResourceAsBitmap("yellow_rose.png", &tmp); |
| 24 tmp.extractSubset(bitmap, SkIRect::MakeWH(256, 256)); |
| 25 bitmap->lockPixels(); |
| 26 } |
| 27 |
| 28 static void make_unpremul_256(SkBitmap* bitmap) { |
| 29 make_premul_256(bitmap); |
| 30 for (int y = 0; y < bitmap->height(); y++) { |
| 31 for (int x = 0; x < bitmap->width(); x++) { |
| 32 SkPMColor* pixel = bitmap->getAddr32(x, y); |
| 33 *pixel = SkUnPreMultiply::UnPreMultiplyPreservingByteOrder(*pixel); |
| 34 } |
| 35 } |
| 36 bitmap->setAlphaType(kUnpremul_SkAlphaType); |
| 37 } |
| 38 |
| 39 static SkImageEncoder* make_encoder(SkImageEncoder::Type type) { |
| 40 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |
| 41 return CreateImageEncoder_CG(type); |
| 42 #elif defined(SK_BUILD_FOR_WIN) |
| 43 return CreateImageEncoder_WIC(type); |
| 44 #else |
| 45 switch (type) { |
| 46 case SkImageEncoder::kPNG_Type: |
| 47 return CreatePNGImageEncoder(); |
| 48 case SkImageEncoder::kJPEG_Type: |
| 49 return CreateJPEGImageEncoder(); |
| 50 case SkImageEncoder::kWEBP_Type: |
| 51 return CreateWEBPImageEncoder(); |
| 52 default: |
| 53 SkASSERT(false); |
| 54 return nullptr; |
| 55 } |
| 56 #endif |
| 57 } |
| 58 |
| 59 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |
| 60 static SkImageEncoder::Type kTypes[] { |
| 61 SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::k
GIF_Type, |
| 62 SkImageEncoder::kBMP_Type, SkImageEncoder::kICO_Type, |
| 63 }; |
| 64 #elif defined(SK_BUILD_FOR_WIN) |
| 65 // Use PNG multiple times because our WIC encoder does not support GIF, BMP, or
ICO. |
| 66 static SkImageEncoder::Type kTypes[] { |
| 67 SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::k
PNG_Type, |
| 68 SkImageEncoder::kPNG_Type, SkImageEncoder::kPNG_Type, |
| 69 }; |
| 70 #else |
| 71 // Use WEBP in place of GIF. Use PNG two extra times. We don't support GIF, BM
P, or ICO. |
| 72 static SkImageEncoder::Type kTypes[] { |
| 73 SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::k
WEBP_Type, |
| 74 SkImageEncoder::kPNG_Type, SkImageEncoder::kPNG_Type, |
| 75 }; |
| 76 #endif |
| 77 |
| 78 |
| 79 class EncodePlatformGM : public GM { |
| 80 public: |
| 81 EncodePlatformGM() {} |
| 82 |
| 83 protected: |
| 84 SkString onShortName() override { |
| 85 return SkString("encode-platform"); |
| 86 } |
| 87 |
| 88 SkISize onISize() override { |
| 89 return SkISize::Make(256 * SK_ARRAY_COUNT(kTypes), 256 * 3); |
| 90 } |
| 91 |
| 92 void onDraw(SkCanvas* canvas) override { |
| 93 SkBitmap opaqueBm, premulBm, unpremulBm; |
| 94 make_opaque_256(&opaqueBm); |
| 95 make_premul_256(&premulBm); |
| 96 make_unpremul_256(&unpremulBm); |
| 97 |
| 98 for (SkImageEncoder::Type type : kTypes) { |
| 99 SkAutoTDelete<SkImageEncoder> encoder(make_encoder(type)); |
| 100 sk_sp<SkData> opaqueData(encoder->encodeData(opaqueBm, 100)); |
| 101 sk_sp<SkData> premulData(encoder->encodeData(premulBm, 100)); |
| 102 sk_sp<SkData> unpremulData(encoder->encodeData(unpremulBm, 100)); |
| 103 |
| 104 sk_sp<SkImage> opaqueImage = SkImage::MakeFromEncoded(opaqueData); |
| 105 sk_sp<SkImage> premulImage = SkImage::MakeFromEncoded(premulData); |
| 106 sk_sp<SkImage> unpremulImage = SkImage::MakeFromEncoded(unpremulData
); |
| 107 |
| 108 canvas->drawImage(opaqueImage.get(), 0.0f, 0.0f); |
| 109 canvas->drawImage(premulImage.get(), 0.0f, 256.0f); |
| 110 canvas->drawImage(unpremulImage.get(), 0.0f, 512.0f); |
| 111 |
| 112 canvas->translate(256.0f, 0.0f); |
| 113 } |
| 114 } |
| 115 |
| 116 private: |
| 117 typedef GM INHERITED; |
| 118 }; |
| 119 |
| 120 DEF_GM( return new EncodePlatformGM; ) |
| 121 } |
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