Leon Scroggins III | 1adcac5 | 2020-05-28 17:12:59 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 Google LLC |
| 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/gm.h" |
| 9 | #include "include/core/SkCanvas.h" |
| 10 | #include "include/core/SkData.h" |
| 11 | #include "include/core/SkEncodedImageFormat.h" |
| 12 | #include "include/core/SkImage.h" |
| 13 | #include "include/core/SkImageInfo.h" |
| 14 | #include "include/core/SkSize.h" |
| 15 | #include "include/core/SkString.h" |
| 16 | #include "include/core/SkSurface.h" |
| 17 | #include "tools/Resources.h" |
| 18 | |
| 19 | namespace skiagm { |
| 20 | |
| 21 | static const int imageWidth = 128; |
| 22 | static const int imageHeight = 128; |
| 23 | |
| 24 | static sk_sp<SkImage> make_image(SkColorType colorType, SkAlphaType alphaType) { |
| 25 | const char* resource; |
| 26 | switch (colorType) { |
| 27 | case kGray_8_SkColorType: |
| 28 | if (alphaType != kOpaque_SkAlphaType) { |
| 29 | return nullptr; |
| 30 | } |
| 31 | resource = "images/grayscale.jpg"; |
| 32 | break; |
| 33 | case kRGB_565_SkColorType: |
| 34 | case kRGB_888x_SkColorType: |
| 35 | case kRGB_101010x_SkColorType: |
| 36 | case kBGR_101010x_SkColorType: |
| 37 | if (alphaType != kOpaque_SkAlphaType) { |
| 38 | return nullptr; |
| 39 | } |
| 40 | resource = "images/color_wheel.jpg"; |
| 41 | break; |
| 42 | default: |
| 43 | resource = (kOpaque_SkAlphaType == alphaType) ? "images/color_wheel.jpg" |
| 44 | : "images/rainbow-gradient.png"; |
| 45 | break; |
| 46 | } |
| 47 | |
| 48 | auto image = GetResourceAsImage(resource); |
| 49 | if (!image) { |
| 50 | return nullptr; |
| 51 | } |
| 52 | |
| 53 | auto surface = SkSurface::MakeRaster(SkImageInfo::Make(image->width(), image->height(), |
| 54 | colorType, alphaType, image->refColorSpace())); |
| 55 | surface->getCanvas()->drawImage(image, 0, 0); |
| 56 | return surface->makeImageSnapshot(); |
| 57 | } |
| 58 | |
| 59 | // This GM looks different depending on the colortype used, so we use different |
| 60 | // names to treat them as different GMs. |
| 61 | // All Variants draw images in pairs: |
| 62 | // - First as an image of the SkColorType of the destination |
| 63 | // - Next as the result of encoding and decoding the first image |
| 64 | enum class Variant { |
| 65 | // One pair, using an opaque image. |
| 66 | kOpaque, |
| 67 | // One pair, using a grayscale image. |
| 68 | kGray, |
| 69 | // An opaque pair followed by two more for premul and unpremul. |
| 70 | kNormal, |
| 71 | }; |
| 72 | |
| 73 | class EncodeColorTypesGM : public GM { |
| 74 | public: |
| 75 | EncodeColorTypesGM(SkEncodedImageFormat format, int quality, Variant variant, const char* name) |
| 76 | : fFormat(format) |
| 77 | , fQuality(quality) |
| 78 | , fVariant(variant) |
| 79 | , fName(name) |
| 80 | {} |
| 81 | |
| 82 | protected: |
| 83 | SkString onShortName() override { |
| 84 | const char* variant = fVariant == Variant::kOpaque ? "opaque-": |
| 85 | fVariant == Variant::kGray ? "gray-" : |
| 86 | "" ; |
| 87 | return SkStringPrintf("encode-%scolor-types-%s", variant, fName); |
| 88 | } |
| 89 | |
| 90 | SkISize onISize() override { |
| 91 | const int width = fVariant == Variant::kNormal ? imageWidth * 7 : imageWidth * 2; |
| 92 | return SkISize::Make(width, imageHeight); |
| 93 | } |
| 94 | |
| 95 | DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override { |
| 96 | const auto colorType = canvas->imageInfo().colorType(); |
| 97 | switch (fVariant) { |
| 98 | case Variant::kGray: |
| 99 | if (colorType != kGray_8_SkColorType) { |
| 100 | return DrawResult::kSkip; |
| 101 | } |
| 102 | break; |
| 103 | case Variant::kOpaque: |
| 104 | if (colorType != kRGB_565_SkColorType && |
| 105 | colorType != kRGB_888x_SkColorType && |
| 106 | colorType != kRGB_101010x_SkColorType && |
| 107 | colorType != kBGR_101010x_SkColorType) |
| 108 | { |
| 109 | return DrawResult::kSkip; |
| 110 | } |
| 111 | break; |
| 112 | case Variant::kNormal: |
| 113 | if (colorType != kARGB_4444_SkColorType && |
| 114 | colorType != kRGBA_8888_SkColorType && |
| 115 | colorType != kBGRA_8888_SkColorType && |
| 116 | colorType != kRGBA_1010102_SkColorType && |
| 117 | colorType != kBGRA_1010102_SkColorType && |
| 118 | colorType != kRGBA_F16Norm_SkColorType && |
| 119 | colorType != kRGBA_F16_SkColorType && |
| 120 | colorType != kRGBA_F32_SkColorType) |
| 121 | { |
| 122 | return DrawResult::kSkip; |
| 123 | } |
| 124 | break; |
| 125 | } |
| 126 | const SkAlphaType alphaTypes[] = { |
| 127 | kOpaque_SkAlphaType, kPremul_SkAlphaType, kUnpremul_SkAlphaType, |
| 128 | }; |
| 129 | |
| 130 | for (SkAlphaType alphaType : alphaTypes) { |
| 131 | auto src = make_image(colorType, alphaType); |
| 132 | auto decoded = src ? SkImage::MakeFromEncoded(src->encodeToData(fFormat, fQuality)) |
| 133 | : nullptr; |
| 134 | if (!src || !decoded) { |
| 135 | break; |
| 136 | } |
| 137 | |
| 138 | canvas->drawImage(src, 0.0f, 0.0f); |
| 139 | canvas->translate((float) imageWidth, 0.0f); |
| 140 | |
| 141 | canvas->drawImage(decoded, 0.0f, 0.0f); |
| 142 | canvas->translate((float) imageWidth * 1.5, 0.0f); |
| 143 | } |
| 144 | return DrawResult::kOk; |
| 145 | } |
| 146 | |
| 147 | private: |
| 148 | const SkEncodedImageFormat fFormat; |
| 149 | const int fQuality; |
| 150 | const Variant fVariant; |
| 151 | const char* fName; |
| 152 | |
| 153 | typedef GM INHERITED; |
| 154 | }; |
| 155 | |
| 156 | |
| 157 | #define DEF_ENCODE_GM(format, quality, variant, name) \ |
| 158 | static skiagm::GMRegistry SK_MACRO_CONCAT(SK_MACRO_APPEND_LINE(REG_), variant)(\ |
| 159 | [](){return std::unique_ptr<skiagm::GM>([](){\ |
| 160 | return new EncodeColorTypesGM(format, quality, Variant::variant, name);\ |
| 161 | }());}); |
| 162 | |
| 163 | #define DEF_VARIANTS(format, quality, name) \ |
| 164 | DEF_ENCODE_GM(format, quality, kNormal, name); \ |
| 165 | DEF_ENCODE_GM(format, quality, kOpaque, name); \ |
| 166 | DEF_ENCODE_GM(format, quality, kGray, name); |
| 167 | |
| 168 | DEF_VARIANTS(SkEncodedImageFormat::kWEBP, 100, "webp-lossless") |
| 169 | DEF_VARIANTS(SkEncodedImageFormat::kWEBP, 80, "webp-lossy") |
| 170 | } |