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 13static void test_peekpixels(skiatest::Reporter* reporter) { 14 const SkImageInfo info = SkImageInfo::MakeN32Premul(10, 10); 15 16 SkPixmap pmap; 17 SkBitmap bm; 18 19 // empty should return false 20 REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr)); 21 REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap)); 22 23 // no pixels should return false 24 bm.setInfo(SkImageInfo::MakeN32Premul(10, 10)); 25 REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr)); 26 REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap)); 27 28 // real pixels should return true 29 bm.allocPixels(info); 30 REPORTER_ASSERT(reporter, bm.peekPixels(nullptr)); 31 REPORTER_ASSERT(reporter, bm.peekPixels(&pmap)); 32 REPORTER_ASSERT(reporter, pmap.info() == bm.info()); 33 REPORTER_ASSERT(reporter, pmap.addr() == bm.getPixels()); 34 REPORTER_ASSERT(reporter, pmap.rowBytes() == bm.rowBytes()); 35 REPORTER_ASSERT(reporter, pmap.ctable() == bm.getColorTable()); 36} 37 38// https://code.google.com/p/chromium/issues/detail?id=446164 39static 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 SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, info.minRowBytes(), nullptr); 48 REPORTER_ASSERT(reporter, !pr); 49} 50 51static 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 87static 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 */ 107DEF_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 */ 130DEF_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 (!source.copyTo(©, ct)) { 141 ERRORF(r, "SkBitmap::copy failed %d", (int)ct); 142 continue; 143 } 144 SkAutoLockPixels autoLockPixels1(copy); 145 SkAutoLockPixels autoLockPixels2(source); 146 REPORTER_ASSERT(r, source.getColor(0, 0) == copy.getColor(0, 0)); 147 } 148} 149 150static void test_erasecolor_premul(skiatest::Reporter* reporter, SkColorType ct, SkColor input, 151 SkColor expected) { 152 SkBitmap bm; 153 bm.allocPixels(SkImageInfo::Make(1, 1, ct, kPremul_SkAlphaType)); 154 bm.eraseColor(input); 155 INFOF(reporter, "expected: %x actual: %x\n", expected, bm.getColor(0, 0)); 156 REPORTER_ASSERT(reporter, bm.getColor(0, 0) == expected); 157} 158 159/** 160 * This test checks that eraseColor premultiplies the color correctly. 161 */ 162DEF_TEST(Bitmap_eraseColor_Premul, r) { 163 SkColor color = 0x80FF0080; 164 test_erasecolor_premul(r, kAlpha_8_SkColorType, color, 0x80000000); 165 test_erasecolor_premul(r, kRGB_565_SkColorType, color, 0xFF840042); 166 test_erasecolor_premul(r, kARGB_4444_SkColorType, color, 0x88FF0080); 167 test_erasecolor_premul(r, kRGBA_8888_SkColorType, color, color); 168 test_erasecolor_premul(r, kBGRA_8888_SkColorType, color, color); 169} 170 171// Test that SkBitmap::ComputeOpaque() is correct for various colortypes. 172DEF_TEST(Bitmap_compute_is_opaque, r) { 173 struct { 174 SkColorType fCT; 175 SkAlphaType fAT; 176 } types[] = { 177 { kGray_8_SkColorType, kOpaque_SkAlphaType }, 178 { kAlpha_8_SkColorType, kPremul_SkAlphaType }, 179 { kARGB_4444_SkColorType, kPremul_SkAlphaType }, 180 { kRGB_565_SkColorType, kOpaque_SkAlphaType }, 181 { kBGRA_8888_SkColorType, kPremul_SkAlphaType }, 182 { kRGBA_8888_SkColorType, kPremul_SkAlphaType }, 183 { kRGBA_F16_SkColorType, kPremul_SkAlphaType }, 184 }; 185 for (auto type : types) { 186 SkBitmap bm; 187 REPORTER_ASSERT(r, !SkBitmap::ComputeIsOpaque(bm)); 188 189 bm.allocPixels(SkImageInfo::Make(13, 17, type.fCT, type.fAT)); 190 bm.eraseColor(SkColorSetARGB(255, 10, 20, 30)); 191 REPORTER_ASSERT(r, SkBitmap::ComputeIsOpaque(bm)); 192 193 bm.eraseColor(SkColorSetARGB(128, 255, 255, 255)); 194 bool isOpaque = SkBitmap::ComputeIsOpaque(bm); 195 bool shouldBeOpaque = (type.fAT == kOpaque_SkAlphaType); 196 REPORTER_ASSERT(r, isOpaque == shouldBeOpaque); 197 } 198} 199 200// Test that erase+getColor round trips with RGBA_F16 pixels. 201DEF_TEST(Bitmap_erase_f16_erase_getColor, r) { 202 SkRandom random; 203 SkPixmap pm; 204 SkBitmap bm; 205 bm.allocPixels(SkImageInfo::Make(1, 1, kRGBA_F16_SkColorType, kPremul_SkAlphaType)); 206 REPORTER_ASSERT(r, bm.peekPixels(&pm)); 207 for (unsigned i = 0; i < 0x100; ++i) { 208 // Test all possible values of blue component. 209 SkColor color1 = (SkColor)((random.nextU() & 0xFFFFFF00) | i); 210 // Test all possible values of alpha component. 211 SkColor color2 = (SkColor)((random.nextU() & 0x00FFFFFF) | (i << 24)); 212 for (SkColor color : {color1, color2}) { 213 pm.erase(color); 214 if (SkColorGetA(color) != 0) { 215 REPORTER_ASSERT(r, color == pm.getColor(0, 0)); 216 } else { 217 REPORTER_ASSERT(r, 0 == SkColorGetA(pm.getColor(0, 0))); 218 } 219 } 220 } 221} 222 223