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 "Resources.h"
9 #include "SkAndroidCodec.h"
10 #include "SkBitmap.h"
11 #include "SkCodec.h"
12 #include "SkCodecImageGenerator.h"
13 #include "SkColor.h"
14 #include "SkData.h"
15 #include "SkEncodedImageFormat.h"
16 #include "SkImageGenerator.h"
17 #include "SkImageInfo.h"
18 #include "SkPixmapPriv.h"
19 #include "SkRefCnt.h"
20 #include "SkSize.h"
21 #include "SkString.h"
22 #include "SkTypes.h"
23 #include "Test.h"
24
25 #include <algorithm>
26 #include <memory>
27
times(const SkISize & size,float factor)28 static SkISize times(const SkISize& size, float factor) {
29 return { (int) (size.width() * factor), (int) (size.height() * factor) };
30 }
31
plus(const SkISize & size,int term)32 static SkISize plus(const SkISize& size, int term) {
33 return { size.width() + term, size.height() + term };
34 }
35
invalid(const SkISize & size)36 static bool invalid(const SkISize& size) {
37 return size.width() < 1 || size.height() < 1;
38 }
39
DEF_TEST(AndroidCodec_computeSampleSize,r)40 DEF_TEST(AndroidCodec_computeSampleSize, r) {
41 if (GetResourcePath().isEmpty()) {
42 return;
43 }
44 for (const char* file : { "images/color_wheel.webp",
45 "images/ship.png",
46 "images/dog.jpg",
47 "images/color_wheel.gif",
48 "images/rle.bmp",
49 "images/google_chrome.ico",
50 "images/mandrill.wbmp",
51 #ifdef SK_CODEC_DECODES_RAW
52 "images/sample_1mp.dng",
53 #endif
54 }) {
55 auto data = GetResourceAsData(file);
56 if (!data) {
57 ERRORF(r, "Could not get %s", file);
58 continue;
59 }
60
61 auto codec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)));
62 if (!codec) {
63 ERRORF(r, "Could not create codec for %s", file);
64 continue;
65 }
66
67 const auto dims = codec->getInfo().dimensions();
68 const SkISize downscales[] = {
69 plus(dims, -1),
70 times(dims, .15f),
71 times(dims, .6f),
72 { (int32_t) (dims.width() * .25f), (int32_t) (dims.height() * .75f ) },
73 { 1, 1 },
74 { 1, 2 },
75 { 2, 1 },
76 { 0, -1 },
77 { dims.width(), dims.height() - 1 },
78 };
79 for (SkISize size : downscales) {
80 const auto requested = size;
81 const int computedSampleSize = codec->computeSampleSize(&size);
82 REPORTER_ASSERT(r, size.width() >= 1 && size.height() >= 1);
83 if (codec->getEncodedFormat() == SkEncodedImageFormat::kWEBP) {
84 // WebP supports arbitrary down-scaling.
85 REPORTER_ASSERT(r, size == requested || invalid(requested));
86 } else if (computedSampleSize == 1) {
87 REPORTER_ASSERT(r, size == dims);
88 } else {
89 REPORTER_ASSERT(r, computedSampleSize > 1);
90 if (size.width() >= dims.width() || size.height() >= dims.height()) {
91 ERRORF(r, "File %s's computed sample size (%i) is bigger than"
92 " original? original: %i x %i\tsampled: %i x %i",
93 file, computedSampleSize, dims.width(), dims.height(),
94 size.width(), size.height());
95 }
96 REPORTER_ASSERT(r, size.width() >= requested.width() &&
97 size.height() >= requested.height());
98 REPORTER_ASSERT(r, size.width() < dims.width() &&
99 size.height() < dims.height());
100 }
101 }
102
103 const SkISize upscales[] = {
104 dims, plus(dims, 5), times(dims, 2),
105 };
106 for (SkISize size : upscales) {
107 const int computedSampleSize = codec->computeSampleSize(&size);
108 REPORTER_ASSERT(r, computedSampleSize == 1);
109 REPORTER_ASSERT(r, dims == size);
110 }
111
112 // This mimics how Android's ImageDecoder uses SkAndroidCodec. A client
113 // can choose their dimensions based on calling getSampledDimensions,
114 // but the ImageDecoder API takes an arbitrary size. It then uses
115 // computeSampleSize to determine the best dimensions and sampleSize.
116 // It should return the same dimensions. the sampleSize may be different
117 // due to integer division.
118 for (int sampleSize : { 1, 2, 3, 4, 8, 16, 32 }) {
119 const SkISize sampledDims = codec->getSampledDimensions(sampleSize);
120 SkISize size = sampledDims;
121 const int computedSampleSize = codec->computeSampleSize(&size);
122 if (sampledDims != size) {
123 ERRORF(r, "File '%s'->getSampledDimensions(%i) yields computed"
124 " sample size of %i\n\tsampledDimensions: %i x %i\t"
125 "computed dimensions: %i x %i",
126 file, sampleSize, computedSampleSize,
127 sampledDims.width(), sampledDims.height(),
128 size.width(), size.height());
129 }
130 }
131 }
132 }
133
DEF_TEST(AndroidCodec_orientation,r)134 DEF_TEST(AndroidCodec_orientation, r) {
135 if (GetResourcePath().isEmpty()) {
136 return;
137 }
138
139 for (const char* ext : { "jpg", "webp" })
140 for (char i = '1'; i <= '8'; ++i) {
141 SkString path = SkStringPrintf("images/orientation/%c.%s", i, ext);
142 auto data = GetResourceAsData(path.c_str());
143 auto gen = SkCodecImageGenerator::MakeFromEncodedCodec(data);
144 if (!gen) {
145 ERRORF(r, "failed to decode %s", path.c_str());
146 return;
147 }
148
149 // Dimensions after adjusting for the origin.
150 const SkISize expectedDims = { 100, 80 };
151
152 // SkCodecImageGenerator automatically adjusts for the origin.
153 REPORTER_ASSERT(r, gen->getInfo().dimensions() == expectedDims);
154
155 auto androidCodec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(data));
156 if (!androidCodec) {
157 ERRORF(r, "failed to decode %s", path.c_str());
158 return;
159 }
160
161 // SkAndroidCodec does not adjust for the origin by default. Dimensions may be reversed.
162 if (SkPixmapPriv::ShouldSwapWidthHeight(androidCodec->codec()->getOrigin())) {
163 auto swappedDims = SkPixmapPriv::SwapWidthHeight(androidCodec->getInfo()).dimensions();
164 REPORTER_ASSERT(r, expectedDims == swappedDims);
165 } else {
166 REPORTER_ASSERT(r, expectedDims == androidCodec->getInfo().dimensions());
167 }
168
169 // Passing kRespect adjusts for the origin.
170 androidCodec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)),
171 SkAndroidCodec::ExifOrientationBehavior::kRespect);
172 auto info = androidCodec->getInfo();
173 REPORTER_ASSERT(r, info.dimensions() == expectedDims);
174
175 SkBitmap fromGenerator;
176 fromGenerator.allocPixels(info);
177 REPORTER_ASSERT(r, gen->getPixels(info, fromGenerator.getPixels(),
178 fromGenerator.rowBytes()));
179
180 SkBitmap fromAndroidCodec;
181 fromAndroidCodec.allocPixels(info);
182 auto result = androidCodec->getPixels(info, fromAndroidCodec.getPixels(),
183 fromAndroidCodec.rowBytes());
184 REPORTER_ASSERT(r, result == SkCodec::kSuccess);
185
186 for (int i = 0; i < info.width(); ++i)
187 for (int j = 0; j < info.height(); ++j) {
188 SkColor c1 = *fromGenerator .getAddr32(i, j);
189 SkColor c2 = *fromAndroidCodec.getAddr32(i, j);
190 if (c1 != c2) {
191 ERRORF(r, "Bitmaps for %s do not match starting at position %i, %i\n"
192 "\tfromGenerator: %x\tfromAndroidCodec: %x", path.c_str(), i, j,
193 c1, c2);
194 return;
195 }
196 }
197 }
198 }
199
