1 /*
2 * Copyright 2013 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 "SkBitmap.h"
9 #include "SkMallocPixelRef.h"
10 #include "SkRandom.h"
11 #include "Test.h"
12 #include "sk_tool_utils.h"
13
test_peekpixels(skiatest::Reporter * reporter)14 static void test_peekpixels(skiatest::Reporter* reporter) {
15 const SkImageInfo info = SkImageInfo::MakeN32Premul(10, 10);
16
17 SkPixmap pmap;
18 SkBitmap bm;
19
20 // empty should return false
21 REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr));
22 REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap));
23
24 // no pixels should return false
25 bm.setInfo(SkImageInfo::MakeN32Premul(10, 10));
26 REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr));
27 REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap));
28
29 // real pixels should return true
30 bm.allocPixels(info);
31 REPORTER_ASSERT(reporter, bm.peekPixels(nullptr));
32 REPORTER_ASSERT(reporter, bm.peekPixels(&pmap));
33 REPORTER_ASSERT(reporter, pmap.info() == bm.info());
34 REPORTER_ASSERT(reporter, pmap.addr() == bm.getPixels());
35 REPORTER_ASSERT(reporter, pmap.rowBytes() == bm.rowBytes());
36 }
37
38 // https://code.google.com/p/chromium/issues/detail?id=446164
test_bigalloc(skiatest::Reporter * reporter)39 static void test_bigalloc(skiatest::Reporter* reporter) {
40 const int width = 0x40000001;
41 const int height = 0x00000096;
42 const SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
43
44 SkBitmap bm;
45 REPORTER_ASSERT(reporter, !bm.tryAllocPixels(info));
46
47 sk_sp<SkPixelRef> pr = SkMallocPixelRef::MakeAllocate(info, info.minRowBytes());
48 REPORTER_ASSERT(reporter, !pr);
49 }
50
test_allocpixels(skiatest::Reporter * reporter)51 static void test_allocpixels(skiatest::Reporter* reporter) {
52 const int width = 10;
53 const int height = 10;
54 const SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
55 const size_t explicitRowBytes = info.minRowBytes() + 24;
56
57 SkBitmap bm;
58 bm.setInfo(info);
59 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
60 bm.allocPixels();
61 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
62 bm.reset();
63 bm.allocPixels(info);
64 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
65
66 bm.setInfo(info, explicitRowBytes);
67 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
68 bm.allocPixels();
69 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
70 bm.reset();
71 bm.allocPixels(info, explicitRowBytes);
72 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
73
74 bm.reset();
75 bm.setInfo(info, 0);
76 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
77 bm.reset();
78 bm.allocPixels(info, 0);
79 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
80
81 bm.reset();
82 bool success = bm.setInfo(info, info.minRowBytes() - 1); // invalid for 32bit
83 REPORTER_ASSERT(reporter, !success);
84 REPORTER_ASSERT(reporter, bm.isNull());
85 }
86
test_bigwidth(skiatest::Reporter * reporter)87 static void test_bigwidth(skiatest::Reporter* reporter) {
88 SkBitmap bm;
89 int width = 1 << 29; // *4 will be the high-bit of 32bit int
90
91 SkImageInfo info = SkImageInfo::MakeA8(width, 1);
92 REPORTER_ASSERT(reporter, bm.setInfo(info));
93 REPORTER_ASSERT(reporter, bm.setInfo(info.makeColorType(kRGB_565_SkColorType)));
94
95 // for a 4-byte config, this width will compute a rowbytes of 0x80000000,
96 // which does not fit in a int32_t. setConfig should detect this, and fail.
97
98 // TODO: perhaps skia can relax this, and only require that rowBytes fit
99 // in a uint32_t (or larger), but for now this is the constraint.
100
101 REPORTER_ASSERT(reporter, !bm.setInfo(info.makeColorType(kN32_SkColorType)));
102 }
103
104 /**
105 * This test contains basic sanity checks concerning bitmaps.
106 */
DEF_TEST(Bitmap,reporter)107 DEF_TEST(Bitmap, reporter) {
108 // Zero-sized bitmaps are allowed
109 for (int width = 0; width < 2; ++width) {
110 for (int height = 0; height < 2; ++height) {
111 SkBitmap bm;
112 bool setConf = bm.setInfo(SkImageInfo::MakeN32Premul(width, height));
113 REPORTER_ASSERT(reporter, setConf);
114 if (setConf) {
115 bm.allocPixels();
116 }
117 REPORTER_ASSERT(reporter, SkToBool(width & height) != bm.empty());
118 }
119 }
120
121 test_bigwidth(reporter);
122 test_allocpixels(reporter);
123 test_bigalloc(reporter);
124 test_peekpixels(reporter);
125 }
126
127 /**
128 * This test checks that getColor works for both swizzles.
129 */
DEF_TEST(Bitmap_getColor_Swizzle,r)130 DEF_TEST(Bitmap_getColor_Swizzle, r) {
131 SkBitmap source;
132 source.allocN32Pixels(1,1);
133 source.eraseColor(SK_ColorRED);
134 SkColorType colorTypes[] = {
135 kRGBA_8888_SkColorType,
136 kBGRA_8888_SkColorType,
137 };
138 for (SkColorType ct : colorTypes) {
139 SkBitmap copy;
140 if (!sk_tool_utils::copy_to(©, ct, source)) {
141 ERRORF(r, "SkBitmap::copy failed %d", (int)ct);
142 continue;
143 }
144 REPORTER_ASSERT(r, source.getColor(0, 0) == copy.getColor(0, 0));
145 }
146 }
147
test_erasecolor_premul(skiatest::Reporter * reporter,SkColorType ct,SkColor input,SkColor expected)148 static void test_erasecolor_premul(skiatest::Reporter* reporter, SkColorType ct, SkColor input,
149 SkColor expected) {
150 SkBitmap bm;
151 bm.allocPixels(SkImageInfo::Make(1, 1, ct, kPremul_SkAlphaType));
152 bm.eraseColor(input);
153 INFOF(reporter, "expected: %x actual: %x\n", expected, bm.getColor(0, 0));
154 REPORTER_ASSERT(reporter, bm.getColor(0, 0) == expected);
155 }
156
157 /**
158 * This test checks that eraseColor premultiplies the color correctly.
159 */
DEF_TEST(Bitmap_eraseColor_Premul,r)160 DEF_TEST(Bitmap_eraseColor_Premul, r) {
161 SkColor color = 0x80FF0080;
162 test_erasecolor_premul(r, kAlpha_8_SkColorType, color, 0x80000000);
163 test_erasecolor_premul(r, kRGB_565_SkColorType, color, 0xFF840042);
164 test_erasecolor_premul(r, kARGB_4444_SkColorType, color, 0x88FF0080);
165 test_erasecolor_premul(r, kRGBA_8888_SkColorType, color, color);
166 test_erasecolor_premul(r, kBGRA_8888_SkColorType, color, color);
167 }
168
169 // Test that SkBitmap::ComputeOpaque() is correct for various colortypes.
DEF_TEST(Bitmap_compute_is_opaque,r)170 DEF_TEST(Bitmap_compute_is_opaque, r) {
171 struct {
172 SkColorType fCT;
173 SkAlphaType fAT;
174 } types[] = {
175 { kGray_8_SkColorType, kOpaque_SkAlphaType },
176 { kAlpha_8_SkColorType, kPremul_SkAlphaType },
177 { kARGB_4444_SkColorType, kPremul_SkAlphaType },
178 { kRGB_565_SkColorType, kOpaque_SkAlphaType },
179 { kBGRA_8888_SkColorType, kPremul_SkAlphaType },
180 { kRGBA_8888_SkColorType, kPremul_SkAlphaType },
181 { kRGBA_F16_SkColorType, kPremul_SkAlphaType },
182 };
183 for (auto type : types) {
184 SkBitmap bm;
185 REPORTER_ASSERT(r, !SkBitmap::ComputeIsOpaque(bm));
186
187 bm.allocPixels(SkImageInfo::Make(13, 17, type.fCT, type.fAT));
188 bm.eraseColor(SkColorSetARGB(255, 10, 20, 30));
189 REPORTER_ASSERT(r, SkBitmap::ComputeIsOpaque(bm));
190
191 bm.eraseColor(SkColorSetARGB(128, 255, 255, 255));
192 bool isOpaque = SkBitmap::ComputeIsOpaque(bm);
193 bool shouldBeOpaque = (type.fAT == kOpaque_SkAlphaType);
194 REPORTER_ASSERT(r, isOpaque == shouldBeOpaque);
195 }
196 }
197
198 // Test that erase+getColor round trips with RGBA_F16 pixels.
DEF_TEST(Bitmap_erase_f16_erase_getColor,r)199 DEF_TEST(Bitmap_erase_f16_erase_getColor, r) {
200 SkRandom random;
201 SkPixmap pm;
202 SkBitmap bm;
203 bm.allocPixels(SkImageInfo::Make(1, 1, kRGBA_F16_SkColorType, kPremul_SkAlphaType));
204 REPORTER_ASSERT(r, bm.peekPixels(&pm));
205 for (unsigned i = 0; i < 0x100; ++i) {
206 // Test all possible values of blue component.
207 SkColor color1 = (SkColor)((random.nextU() & 0xFFFFFF00) | i);
208 // Test all possible values of alpha component.
209 SkColor color2 = (SkColor)((random.nextU() & 0x00FFFFFF) | (i << 24));
210 for (SkColor color : {color1, color2}) {
211 pm.erase(color);
212 if (SkColorGetA(color) != 0) {
213 REPORTER_ASSERT(r, color == pm.getColor(0, 0));
214 } else {
215 REPORTER_ASSERT(r, 0 == SkColorGetA(pm.getColor(0, 0)));
216 }
217 }
218 }
219 }
220
221 // Make sure that the bitmap remains valid when pixelref is removed.
DEF_TEST(Bitmap_clear_pixelref_keep_info,r)222 DEF_TEST(Bitmap_clear_pixelref_keep_info, r) {
223 SkBitmap bm;
224 bm.allocPixels(SkImageInfo::MakeN32Premul(100,100));
225 bm.setPixelRef(nullptr, 0, 0);
226 SkDEBUGCODE(bm.validate();)
227 }
228
229