1 /*
2 * Copyright 2018 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 "include/codec/SkAndroidCodec.h"
9 #include "include/codec/SkCodec.h"
10 #include "include/core/SkBitmap.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkColorSpace.h"
13 #include "include/core/SkData.h"
14 #include "include/core/SkEncodedImageFormat.h"
15 #include "include/core/SkImageGenerator.h"
16 #include "include/core/SkImageInfo.h"
17 #include "include/core/SkRefCnt.h"
18 #include "include/core/SkSize.h"
19 #include "include/core/SkString.h"
20 #include "include/core/SkTypes.h"
21 #include "include/third_party/skcms/skcms.h"
22 #include "src/codec/SkCodecImageGenerator.h"
23 #include "src/core/SkPixmapPriv.h"
24 #include "tests/Test.h"
25 #include "tools/Resources.h"
26
27 #include <string.h>
28 #include <initializer_list>
29 #include <memory>
30 #include <utility>
31
times(const SkISize & size,float factor)32 static SkISize times(const SkISize& size, float factor) {
33 return { (int) (size.width() * factor), (int) (size.height() * factor) };
34 }
35
plus(const SkISize & size,int term)36 static SkISize plus(const SkISize& size, int term) {
37 return { size.width() + term, size.height() + term };
38 }
39
invalid(const SkISize & size)40 static bool invalid(const SkISize& size) {
41 return size.width() < 1 || size.height() < 1;
42 }
43
DEF_TEST(AndroidCodec_computeSampleSize,r)44 DEF_TEST(AndroidCodec_computeSampleSize, r) {
45 if (GetResourcePath().isEmpty()) {
46 return;
47 }
48 for (const char* file : { "images/color_wheel.webp",
49 "images/ship.png",
50 "images/dog.jpg",
51 "images/color_wheel.gif",
52 "images/rle.bmp",
53 "images/google_chrome.ico",
54 "images/mandrill.wbmp",
55 #ifdef SK_CODEC_DECODES_RAW
56 "images/sample_1mp.dng",
57 #endif
58 }) {
59 auto data = GetResourceAsData(file);
60 if (!data) {
61 ERRORF(r, "Could not get %s", file);
62 continue;
63 }
64
65 auto codec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)));
66 if (!codec) {
67 ERRORF(r, "Could not create codec for %s", file);
68 continue;
69 }
70
71 const auto dims = codec->getInfo().dimensions();
72 const SkISize downscales[] = {
73 plus(dims, -1),
74 times(dims, .15f),
75 times(dims, .6f),
76 { (int32_t) (dims.width() * .25f), (int32_t) (dims.height() * .75f ) },
77 { 1, 1 },
78 { 1, 2 },
79 { 2, 1 },
80 { 0, -1 },
81 { dims.width(), dims.height() - 1 },
82 };
83 for (SkISize size : downscales) {
84 const auto requested = size;
85 const int computedSampleSize = codec->computeSampleSize(&size);
86 REPORTER_ASSERT(r, size.width() >= 1 && size.height() >= 1);
87 if (codec->getEncodedFormat() == SkEncodedImageFormat::kWEBP) {
88 // WebP supports arbitrary down-scaling.
89 REPORTER_ASSERT(r, size == requested || invalid(requested));
90 } else if (computedSampleSize == 1) {
91 REPORTER_ASSERT(r, size == dims);
92 } else {
93 REPORTER_ASSERT(r, computedSampleSize > 1);
94 if (size.width() >= dims.width() || size.height() >= dims.height()) {
95 ERRORF(r, "File %s's computed sample size (%i) is bigger than"
96 " original? original: %i x %i\tsampled: %i x %i",
97 file, computedSampleSize, dims.width(), dims.height(),
98 size.width(), size.height());
99 }
100 REPORTER_ASSERT(r, size.width() >= requested.width() &&
101 size.height() >= requested.height());
102 REPORTER_ASSERT(r, size.width() < dims.width() &&
103 size.height() < dims.height());
104 }
105 }
106
107 const SkISize upscales[] = {
108 dims, plus(dims, 5), times(dims, 2),
109 };
110 for (SkISize size : upscales) {
111 const int computedSampleSize = codec->computeSampleSize(&size);
112 REPORTER_ASSERT(r, computedSampleSize == 1);
113 REPORTER_ASSERT(r, dims == size);
114 }
115
116 // This mimics how Android's ImageDecoder uses SkAndroidCodec. A client
117 // can choose their dimensions based on calling getSampledDimensions,
118 // but the ImageDecoder API takes an arbitrary size. It then uses
119 // computeSampleSize to determine the best dimensions and sampleSize.
120 // It should return the same dimensions. the sampleSize may be different
121 // due to integer division.
122 for (int sampleSize : { 1, 2, 3, 4, 8, 16, 32 }) {
123 const SkISize sampledDims = codec->getSampledDimensions(sampleSize);
124 SkISize size = sampledDims;
125 const int computedSampleSize = codec->computeSampleSize(&size);
126 if (sampledDims != size) {
127 ERRORF(r, "File '%s'->getSampledDimensions(%i) yields computed"
128 " sample size of %i\n\tsampledDimensions: %i x %i\t"
129 "computed dimensions: %i x %i",
130 file, sampleSize, computedSampleSize,
131 sampledDims.width(), sampledDims.height(),
132 size.width(), size.height());
133 }
134 }
135 }
136 }
137
DEF_TEST(AndroidCodec_wide,r)138 DEF_TEST(AndroidCodec_wide, r) {
139 if (GetResourcePath().isEmpty()) {
140 return;
141 }
142
143 const char* path = "images/wide-gamut.png";
144 auto data = GetResourceAsData(path);
145 if (!data) {
146 ERRORF(r, "Missing file %s", path);
147 return;
148 }
149
150 auto codec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)));
151 if (!codec) {
152 ERRORF(r, "Failed to create codec from %s", path);
153 return;
154 }
155
156 auto info = codec->getInfo();
157 auto cs = codec->computeOutputColorSpace(info.colorType(), nullptr);
158 if (!cs) {
159 ERRORF(r, "%s should have a color space", path);
160 return;
161 }
162
163 auto expected = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDisplayP3);
164 REPORTER_ASSERT(r, SkColorSpace::Equals(cs.get(), expected.get()));
165 }
166
DEF_TEST(AndroidCodec_P3,r)167 DEF_TEST(AndroidCodec_P3, r) {
168 if (GetResourcePath().isEmpty()) {
169 return;
170 }
171
172 const char* path = "images/purple-displayprofile.png";
173 auto data = GetResourceAsData(path);
174 if (!data) {
175 ERRORF(r, "Missing file %s", path);
176 return;
177 }
178
179 auto codec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)));
180 if (!codec) {
181 ERRORF(r, "Failed to create codec from %s", path);
182 return;
183 }
184
185 auto info = codec->getInfo();
186 auto cs = codec->computeOutputColorSpace(info.colorType(), nullptr);
187 if (!cs) {
188 ERRORF(r, "%s should have a color space", path);
189 return;
190 }
191
192 REPORTER_ASSERT(r, !cs->isSRGB());
193 REPORTER_ASSERT(r, cs->gammaCloseToSRGB());
194
195 skcms_Matrix3x3 matrix;
196 cs->toXYZD50(&matrix);
197
198 static constexpr skcms_Matrix3x3 kExpected = {{
199 { 0.426254272f, 0.369018555f, 0.168914795f },
200 { 0.226013184f, 0.685974121f, 0.0880126953f },
201 { 0.0116729736f, 0.0950927734f, 0.71812439f },
202 }};
203 REPORTER_ASSERT(r, 0 == memcmp(&matrix, &kExpected, sizeof(skcms_Matrix3x3)));
204 }
205
