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| 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 "Resources.h" | |
| 9 #include "SkBitmap.h" | |
| 10 #include "SkCanvas.h" | |
| 11 #include "SkColor.h" | |
| 12 #include "SkColorPriv.h" | |
| 13 #include "SkData.h" | |
| 14 #include "SkDecodingImageGenerator.h" | |
| 15 #include "SkDiscardableMemoryPool.h" | |
| 16 #include "SkForceLinking.h" | |
| 17 #include "SkGradientShader.h" | |
| 18 #include "SkImageDecoder.h" | |
| 19 #include "SkImageEncoder.h" | |
| 20 #include "SkImageGeneratorPriv.h" | |
| 21 #include "SkImagePriv.h" | |
| 22 #include "SkOSFile.h" | |
| 23 #include "SkPoint.h" | |
| 24 #include "SkShader.h" | |
| 25 #include "SkStream.h" | |
| 26 #include "SkString.h" | |
| 27 #include "Test.h" | |
| 28 | |
| 29 __SK_FORCE_IMAGE_DECODER_LINKING; | |
| 30 | |
| 31 /** | |
| 32 * Interprets c as an unpremultiplied color, and returns the | |
| 33 * premultiplied equivalent. | |
| 34 */ | |
| 35 static SkPMColor premultiply_unpmcolor(SkPMColor c) { | |
| 36 U8CPU a = SkGetPackedA32(c); | |
| 37 U8CPU r = SkGetPackedR32(c); | |
| 38 U8CPU g = SkGetPackedG32(c); | |
| 39 U8CPU b = SkGetPackedB32(c); | |
| 40 return SkPreMultiplyARGB(a, r, g, b); | |
| 41 } | |
| 42 | |
| 43 /** | |
| 44 * Return true if this stream format should be skipped, due | |
| 45 * to do being an opaque format or not a valid format. | |
| 46 */ | |
| 47 static bool skip_image_format(SkImageDecoder::Format format) { | |
| 48 switch (format) { | |
| 49 case SkImageDecoder::kPNG_Format: | |
| 50 case SkImageDecoder::kWEBP_Format: | |
| 51 return false; | |
| 52 // Skip unknown since it will not be decoded anyway. | |
| 53 case SkImageDecoder::kUnknown_Format: | |
| 54 // Technically ICO and BMP supports alpha channels, but our image | |
| 55 // decoders do not, so skip them as well. | |
| 56 case SkImageDecoder::kICO_Format: | |
| 57 case SkImageDecoder::kBMP_Format: | |
| 58 // KTX and ASTC are texture formats so it's not particularly clear how t
o | |
| 59 // decode the alpha from them. | |
| 60 case SkImageDecoder::kKTX_Format: | |
| 61 case SkImageDecoder::kASTC_Format: | |
| 62 // The rest of these are opaque. | |
| 63 case SkImageDecoder::kPKM_Format: | |
| 64 case SkImageDecoder::kWBMP_Format: | |
| 65 case SkImageDecoder::kGIF_Format: | |
| 66 case SkImageDecoder::kJPEG_Format: | |
| 67 return true; | |
| 68 } | |
| 69 SkASSERT(false); | |
| 70 return true; | |
| 71 } | |
| 72 | |
| 73 /** | |
| 74 * Test decoding an image in premultiplied mode and unpremultiplied mode and co
mpare | |
| 75 * them. | |
| 76 */ | |
| 77 static void compare_unpremul(skiatest::Reporter* reporter, const SkString& filen
ame) { | |
| 78 // Decode a resource: | |
| 79 SkBitmap bm8888; | |
| 80 SkBitmap bm8888Unpremul; | |
| 81 | |
| 82 SkFILEStream stream(filename.c_str()); | |
| 83 | |
| 84 SkImageDecoder::Format format = SkImageDecoder::GetStreamFormat(&stream); | |
| 85 if (skip_image_format(format)) { | |
| 86 return; | |
| 87 } | |
| 88 | |
| 89 SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| 90 if (nullptr == decoder.get()) { | |
| 91 SkDebugf("couldn't decode %s\n", filename.c_str()); | |
| 92 return; | |
| 93 } | |
| 94 | |
| 95 bool success = decoder->decode(&stream, &bm8888, kN32_SkColorType, | |
| 96 SkImageDecoder::kDecodePixels_Mode) != SkImag
eDecoder::kFailure; | |
| 97 if (!success) { | |
| 98 return; | |
| 99 } | |
| 100 | |
| 101 success = stream.rewind(); | |
| 102 REPORTER_ASSERT(reporter, success); | |
| 103 if (!success) { | |
| 104 return; | |
| 105 } | |
| 106 | |
| 107 decoder->setRequireUnpremultipliedColors(true); | |
| 108 success = decoder->decode(&stream, &bm8888Unpremul, kN32_SkColorType, | |
| 109 SkImageDecoder::kDecodePixels_Mode) != SkImageDeco
der::kFailure; | |
| 110 if (!success) { | |
| 111 return; | |
| 112 } | |
| 113 | |
| 114 bool dimensionsMatch = bm8888.width() == bm8888Unpremul.width() | |
| 115 && bm8888.height() == bm8888Unpremul.height(); | |
| 116 REPORTER_ASSERT(reporter, dimensionsMatch); | |
| 117 if (!dimensionsMatch) { | |
| 118 return; | |
| 119 } | |
| 120 | |
| 121 // Only do the comparison if the two bitmaps are both 8888. | |
| 122 if (bm8888.colorType() != kN32_SkColorType || bm8888Unpremul.colorType() !=
kN32_SkColorType) { | |
| 123 return; | |
| 124 } | |
| 125 | |
| 126 // Now compare the two bitmaps. | |
| 127 for (int i = 0; i < bm8888.width(); ++i) { | |
| 128 for (int j = 0; j < bm8888.height(); ++j) { | |
| 129 // "c0" is the color of the premultiplied bitmap at (i, j). | |
| 130 const SkPMColor c0 = *bm8888.getAddr32(i, j); | |
| 131 // "c1" is the result of premultiplying the color of the unpremultip
lied | |
| 132 // bitmap at (i, j). | |
| 133 const SkPMColor c1 = premultiply_unpmcolor(*bm8888Unpremul.getAddr32
(i, j)); | |
| 134 // Compute the difference for each component. | |
| 135 int da = SkAbs32(SkGetPackedA32(c0) - SkGetPackedA32(c1)); | |
| 136 int dr = SkAbs32(SkGetPackedR32(c0) - SkGetPackedR32(c1)); | |
| 137 int dg = SkAbs32(SkGetPackedG32(c0) - SkGetPackedG32(c1)); | |
| 138 int db = SkAbs32(SkGetPackedB32(c0) - SkGetPackedB32(c1)); | |
| 139 | |
| 140 // Alpha component must be exactly the same. | |
| 141 REPORTER_ASSERT(reporter, 0 == da); | |
| 142 | |
| 143 // Color components may not match exactly due to rounding error. | |
| 144 REPORTER_ASSERT(reporter, dr <= 1); | |
| 145 REPORTER_ASSERT(reporter, dg <= 1); | |
| 146 REPORTER_ASSERT(reporter, db <= 1); | |
| 147 } | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 static void test_unpremul(skiatest::Reporter* reporter) { | |
| 152 // This test cannot run if there is no resource path. | |
| 153 SkString resourcePath = GetResourcePath(); | |
| 154 if (resourcePath.isEmpty()) { | |
| 155 SkDebugf("Could not run unpremul test because resourcePath not specified
."); | |
| 156 return; | |
| 157 } | |
| 158 SkOSFile::Iter iter(resourcePath.c_str()); | |
| 159 SkString basename; | |
| 160 if (iter.next(&basename)) { | |
| 161 do { | |
| 162 SkString filename = SkOSPath::Join(resourcePath.c_str(), basename.c_
str()); | |
| 163 // SkDebugf("about to decode \"%s\"\n", filename.c_str()); | |
| 164 compare_unpremul(reporter, filename); | |
| 165 } while (iter.next(&basename)); | |
| 166 } else { | |
| 167 SkDebugf("Failed to find any files :(\n"); | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| 172 // Test that the alpha type is what we expect. | |
| 173 static void test_alphaType(skiatest::Reporter* reporter, const SkString& filenam
e, | |
| 174 bool requireUnpremul) { | |
| 175 SkBitmap bm; | |
| 176 SkFILEStream stream(filename.c_str()); | |
| 177 | |
| 178 SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| 179 if (nullptr == decoder.get()) { | |
| 180 return; | |
| 181 } | |
| 182 | |
| 183 decoder->setRequireUnpremultipliedColors(requireUnpremul); | |
| 184 | |
| 185 // Decode just the bounds. This should always succeed. | |
| 186 bool success = decoder->decode(&stream, &bm, kN32_SkColorType, | |
| 187 SkImageDecoder::kDecodeBounds_Mode); | |
| 188 REPORTER_ASSERT(reporter, success); | |
| 189 if (!success) { | |
| 190 return; | |
| 191 } | |
| 192 | |
| 193 // Keep track of the alpha type for testing later. If the full decode | |
| 194 // succeeds, the alpha type should be the same, unless the full decode | |
| 195 // determined that the alpha type should actually be opaque, which may | |
| 196 // not be known when only decoding the bounds. | |
| 197 const SkAlphaType boundsAlphaType = bm.alphaType(); | |
| 198 | |
| 199 // rewind should always succeed on SkFILEStream. | |
| 200 success = stream.rewind(); | |
| 201 REPORTER_ASSERT(reporter, success); | |
| 202 if (!success) { | |
| 203 return; | |
| 204 } | |
| 205 | |
| 206 success = decoder->decode(&stream, &bm, kN32_SkColorType, SkImageDecoder::kD
ecodePixels_Mode); | |
| 207 | |
| 208 if (!success) { | |
| 209 // When the decoder is set to require unpremul, if it does not support | |
| 210 // unpremul it will fail. This is the only reason the decode should | |
| 211 // fail (since we know the files we are using to test can be decoded). | |
| 212 REPORTER_ASSERT(reporter, requireUnpremul); | |
| 213 return; | |
| 214 } | |
| 215 | |
| 216 // The bounds decode should return with either the requested | |
| 217 // premul/unpremul or opaque, if that value could be determined when only | |
| 218 // decoding the bounds. | |
| 219 if (requireUnpremul) { | |
| 220 REPORTER_ASSERT(reporter, kUnpremul_SkAlphaType == boundsAlphaType | |
| 221 || kOpaque_SkAlphaType == boundsAlphaType | |
| 222 || filename.endsWith(".ico")); | |
| 223 // TODO(halcanary): Find out why color_wheel.ico fails this test. | |
| 224 } else { | |
| 225 REPORTER_ASSERT(reporter, kPremul_SkAlphaType == boundsAlphaType | |
| 226 || kOpaque_SkAlphaType == boundsAlphaType); | |
| 227 } | |
| 228 | |
| 229 // When decoding the full image, the alpha type should match the one | |
| 230 // returned by the bounds decode, unless the full decode determined that | |
| 231 // the alpha type is actually opaque. | |
| 232 REPORTER_ASSERT(reporter, bm.alphaType() == boundsAlphaType | |
| 233 || bm.alphaType() == kOpaque_SkAlphaType); | |
| 234 } | |
| 235 | |
| 236 DEF_TEST(ImageDecoding_alphaType, reporter) { | |
| 237 SkString resourcePath = GetResourcePath(); | |
| 238 if (resourcePath.isEmpty()) { | |
| 239 SkDebugf("Could not run alphaType test because resourcePath not specifie
d."); | |
| 240 return; | |
| 241 } | |
| 242 | |
| 243 SkOSFile::Iter iter(resourcePath.c_str()); | |
| 244 SkString basename; | |
| 245 if (iter.next(&basename)) { | |
| 246 do { | |
| 247 SkString filename = SkOSPath::Join(resourcePath.c_str(), basename.c_
str()); | |
| 248 for (int truth = 0; truth <= 1; ++truth) { | |
| 249 test_alphaType(reporter, filename, SkToBool(truth)); | |
| 250 } | |
| 251 } while (iter.next(&basename)); | |
| 252 } else { | |
| 253 SkDebugf("Failed to find any files :(\n"); | |
| 254 } | |
| 255 | |
| 256 } | |
| 257 | |
| 258 // Using known images, test that decoding into unpremul and premul behave as exp
ected. | |
| 259 DEF_TEST(ImageDecoding_unpremul, reporter) { | |
| 260 SkString resourcePath = GetResourcePath(); | |
| 261 if (resourcePath.isEmpty()) { | |
| 262 SkDebugf("Could not run unpremul test because resourcePath not specified
."); | |
| 263 return; | |
| 264 } | |
| 265 const char* root = "half-transparent-white-pixel"; | |
| 266 const char* suffixes[] = { ".png", ".webp" }; | |
| 267 | |
| 268 for (size_t i = 0; i < SK_ARRAY_COUNT(suffixes); ++i) { | |
| 269 SkString basename = SkStringPrintf("%s%s", root, suffixes[i]); | |
| 270 SkString fullName = SkOSPath::Join(resourcePath.c_str(), basename.c_str(
)); | |
| 271 | |
| 272 SkBitmap bm; | |
| 273 SkFILEStream stream(fullName.c_str()); | |
| 274 | |
| 275 if (!stream.isValid()) { | |
| 276 SkDebugf("file %s missing from resource directoy %s\n", | |
| 277 basename.c_str(), resourcePath.c_str()); | |
| 278 continue; | |
| 279 } | |
| 280 | |
| 281 // This should never fail since we know the images we're decoding. | |
| 282 SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| 283 REPORTER_ASSERT(reporter, decoder.get()); | |
| 284 if (nullptr == decoder.get()) { | |
| 285 continue; | |
| 286 } | |
| 287 | |
| 288 // Test unpremultiplied. We know what color this should result in. | |
| 289 decoder->setRequireUnpremultipliedColors(true); | |
| 290 bool success = decoder->decode(&stream, &bm, kN32_SkColorType, | |
| 291 SkImageDecoder::kDecodePixels_Mode); | |
| 292 REPORTER_ASSERT(reporter, success); | |
| 293 if (!success) { | |
| 294 continue; | |
| 295 } | |
| 296 | |
| 297 REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1); | |
| 298 { | |
| 299 SkAutoLockPixels alp(bm); | |
| 300 REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7fffffff); | |
| 301 } | |
| 302 | |
| 303 success = stream.rewind(); | |
| 304 REPORTER_ASSERT(reporter, success); | |
| 305 if (!success) { | |
| 306 continue; | |
| 307 } | |
| 308 | |
| 309 // Test premultiplied. Once again, we know which color this should | |
| 310 // result in. | |
| 311 decoder->setRequireUnpremultipliedColors(false); | |
| 312 success = decoder->decode(&stream, &bm, kN32_SkColorType, | |
| 313 SkImageDecoder::kDecodePixels_Mode); | |
| 314 REPORTER_ASSERT(reporter, success); | |
| 315 if (!success) { | |
| 316 continue; | |
| 317 } | |
| 318 | |
| 319 REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1); | |
| 320 { | |
| 321 SkAutoLockPixels alp(bm); | |
| 322 REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7f7f7f7f); | |
| 323 } | |
| 324 } | |
| 325 } | |
| 326 #endif // SK_BUILD_FOR_UNIX/ANDROID https://bug.skia.org/2388 | |
| 327 | |
| 328 #ifdef SK_DEBUG | |
| 329 // Test inside SkScaledBitmapSampler.cpp | |
| 330 extern void test_row_proc_choice(); | |
| 331 #endif // SK_DEBUG | |
| 332 | |
| 333 DEF_TEST(ImageDecoding, reporter) { | |
| 334 test_unpremul(reporter); | |
| 335 #ifdef SK_DEBUG | |
| 336 test_row_proc_choice(); | |
| 337 #endif | |
| 338 } | |
| 339 | |
| 340 // expected output for 8x8 bitmap | |
| 341 static const int kExpectedWidth = 8; | |
| 342 static const int kExpectedHeight = 8; | |
| 343 static const SkColor kExpectedPixels[] = { | |
| 344 0xffbba570, 0xff395f5d, 0xffe25c39, 0xff197666, | |
| 345 0xff3cba27, 0xffdefcb0, 0xffc13874, 0xfffa0093, | |
| 346 0xffbda60e, 0xffc01db6, 0xff2bd688, 0xff9362d4, | |
| 347 0xffc641b2, 0xffa5cede, 0xff606eba, 0xff8f4bf3, | |
| 348 0xff3bf742, 0xff8f02a8, 0xff5509df, 0xffc7027e, | |
| 349 0xff24aa8a, 0xff886c96, 0xff625481, 0xff403689, | |
| 350 0xffc52152, 0xff78ccd6, 0xffdcb4ab, 0xff09d27d, | |
| 351 0xffca00f3, 0xff605d47, 0xff446fb2, 0xff576e46, | |
| 352 0xff273df9, 0xffb41a83, 0xfff812c3, 0xffccab67, | |
| 353 0xff034218, 0xff7db9a7, 0xff821048, 0xfffe4ab4, | |
| 354 0xff6fac98, 0xff941d27, 0xff5fe411, 0xfffbb283, | |
| 355 0xffd86e99, 0xff169162, 0xff71128c, 0xff39cab4, | |
| 356 0xffa7fe63, 0xff4c956b, 0xffbc22e0, 0xffb272e4, | |
| 357 0xff129f4a, 0xffe34513, 0xff3d3742, 0xffbd190a, | |
| 358 0xffb07222, 0xff2e23f8, 0xfff089d9, 0xffb35738, | |
| 359 0xffa86022, 0xff3340fe, 0xff95fe71, 0xff6a71df | |
| 360 }; | |
| 361 static_assert((kExpectedWidth * kExpectedHeight) == SK_ARRAY_COUNT(kExpectedPixe
ls), | |
| 362 "array_size_mismatch"); | |
| 363 | |
| 364 static bool decode_into_bitmap(skiatest::Reporter* r, SkBitmap* bm, SkData* enco
ded) { | |
| 365 SkAutoTDelete<SkImageGenerator> gen(SkImageGenerator::NewFromEncoded(encoded
)); | |
| 366 if (!gen) { | |
| 367 REPORTER_ASSERT(r, false); | |
| 368 return false; | |
| 369 } | |
| 370 if (!gen->tryGenerateBitmap(bm)) { | |
| 371 REPORTER_ASSERT(r, false); | |
| 372 return false; | |
| 373 } | |
| 374 return true; | |
| 375 } | |
| 376 | |
| 377 DEF_TEST(WebP, reporter) { | |
| 378 const unsigned char encodedWebP[] = { | |
| 379 0x52, 0x49, 0x46, 0x46, 0x2c, 0x01, 0x00, 0x00, 0x57, 0x45, 0x42, 0x50, | |
| 380 0x56, 0x50, 0x38, 0x4c, 0x20, 0x01, 0x00, 0x00, 0x2f, 0x07, 0xc0, 0x01, | |
| 381 0x00, 0xff, 0x01, 0x45, 0x03, 0x00, 0xe2, 0xd5, 0xae, 0x60, 0x2b, 0xad, | |
| 382 0xd9, 0x68, 0x76, 0xb6, 0x8d, 0x6a, 0x1d, 0xc0, 0xe6, 0x19, 0xd6, 0x16, | |
| 383 0xb7, 0xb4, 0xef, 0xcf, 0xc3, 0x15, 0x6c, 0xb3, 0xbd, 0x77, 0x0d, 0x85, | |
| 384 0x6d, 0x1b, 0xa9, 0xb1, 0x2b, 0xdc, 0x3d, 0x83, 0xdb, 0x00, 0x00, 0xc8, | |
| 385 0x26, 0xe5, 0x01, 0x99, 0x8a, 0xd5, 0xdd, 0xfc, 0x82, 0xcd, 0xcd, 0x9a, | |
| 386 0x8c, 0x13, 0xcc, 0x1b, 0xba, 0xf5, 0x05, 0xdb, 0xee, 0x6a, 0xdb, 0x38, | |
| 387 0x60, 0xfe, 0x43, 0x2c, 0xd4, 0x6a, 0x99, 0x4d, 0xc6, 0xc0, 0xd3, 0x28, | |
| 388 0x1b, 0xc1, 0xb1, 0x17, 0x4e, 0x43, 0x0e, 0x3d, 0x27, 0xe9, 0xe4, 0x84, | |
| 389 0x4f, 0x24, 0x62, 0x69, 0x85, 0x43, 0x8d, 0xc2, 0x04, 0x00, 0x07, 0x59, | |
| 390 0x60, 0xfd, 0x8b, 0x4d, 0x60, 0x32, 0x72, 0xcf, 0x88, 0x0c, 0x2f, 0x2f, | |
| 391 0xad, 0x62, 0xbd, 0x27, 0x09, 0x16, 0x70, 0x78, 0x6c, 0xd9, 0x82, 0xef, | |
| 392 0x1a, 0xa2, 0xcc, 0xf0, 0xf1, 0x6f, 0xd8, 0x78, 0x2e, 0x39, 0xa1, 0xcf, | |
| 393 0x14, 0x4b, 0x89, 0xb4, 0x1b, 0x48, 0x15, 0x7c, 0x48, 0x6f, 0x8c, 0x20, | |
| 394 0xb7, 0x00, 0xcf, 0xfc, 0xdb, 0xd0, 0xe9, 0xe7, 0x42, 0x09, 0xa4, 0x03, | |
| 395 0x40, 0xac, 0xda, 0x40, 0x01, 0x00, 0x5f, 0xa1, 0x3d, 0x64, 0xe1, 0xf4, | |
| 396 0x03, 0x45, 0x29, 0xe0, 0xe2, 0x4a, 0xc3, 0xa2, 0xe8, 0xe0, 0x25, 0x12, | |
| 397 0x74, 0xc6, 0xe8, 0xfb, 0x93, 0x4f, 0x9f, 0x5e, 0xc0, 0xa6, 0x91, 0x1b, | |
| 398 0xa4, 0x24, 0x82, 0xc3, 0x61, 0x07, 0x4c, 0x49, 0x4f, 0x53, 0xae, 0x5f, | |
| 399 0x5d, 0x39, 0x36, 0xc0, 0x5b, 0x57, 0x54, 0x60, 0x10, 0x00, 0x00, 0xd1, | |
| 400 0x68, 0xb6, 0x6d, 0xdb, 0x36, 0x22, 0xfa, 0x1f, 0x35, 0x75, 0x22, 0xec, | |
| 401 0x31, 0xbc, 0x5d, 0x8f, 0x87, 0x53, 0xa2, 0x05, 0x8c, 0x2f, 0xcd, 0xa8, | |
| 402 0xa7, 0xf3, 0xa3, 0xbd, 0x83, 0x8b, 0x2a, 0xc8, 0x58, 0xf5, 0xac, 0x80, | |
| 403 0xe3, 0xfe, 0x66, 0xa4, 0x7c, 0x1b, 0x6c, 0xd1, 0xa9, 0xd8, 0x14, 0xd0, | |
| 404 0xc5, 0xb5, 0x39, 0x71, 0x97, 0x19, 0x19, 0x1b | |
| 405 }; | |
| 406 | |
| 407 SkBitmap bm; | |
| 408 SkAutoDataUnref encoded(SkData::NewWithoutCopy(encodedWebP, sizeof(encodedWe
bP))); | |
| 409 if (!decode_into_bitmap(reporter, &bm, encoded)) { | |
| 410 return; | |
| 411 } | |
| 412 if (kExpectedWidth != bm.width() || kExpectedHeight != bm.height()) { | |
| 413 REPORTER_ASSERT(reporter, false); | |
| 414 return; | |
| 415 } | |
| 416 | |
| 417 bool error = false; | |
| 418 const SkColor* correctPixel = kExpectedPixels; | |
| 419 for (int y = 0; y < bm.height(); ++y) { | |
| 420 for (int x = 0; x < bm.width(); ++x) { | |
| 421 error |= (*correctPixel != bm.getColor(x, y)); | |
| 422 ++correctPixel; | |
| 423 } | |
| 424 } | |
| 425 REPORTER_ASSERT(reporter, !error); | |
| 426 } | |
| 427 | |
| 428 //////////////////////////////////////////////////////////////////////////////// | |
| 429 | |
| 430 /** | |
| 431 * A test for the SkDecodingImageGenerator::Create | |
| 432 */ | |
| 433 DEF_TEST(ImprovedBitmapFactory, reporter) { | |
| 434 SkString pngFilename = GetResourcePath("randPixels.png"); | |
| 435 SkAutoTDelete<SkStreamRewindable> stream(SkStream::NewFromFile(pngFilename.c
_str())); | |
| 436 if (sk_exists(pngFilename.c_str())) { | |
| 437 // example of how Android will do this inside their BitmapFactory | |
| 438 SkDecodingImageGenerator::Options opts(1, true, kN32_SkColorType); | |
| 439 SkBitmap bm; | |
| 440 SkAutoTDelete<SkImageGenerator> gen(SkDecodingImageGenerator::Create(str
eam.detach(), | |
| 441 opt
s)); | |
| 442 REPORTER_ASSERT(reporter, gen->tryGenerateBitmap(&bm)); | |
| 443 } | |
| 444 } | |
| 445 | |
| 446 //////////////////////////////////////////////////////////////////////////////// | |
| 447 | |
| 448 #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| 449 static inline bool check_rounding(int value, int dividend, int divisor) { | |
| 450 // returns true if the value is greater than floor(dividend/divisor) | |
| 451 // and less than SkNextPow2(ceil(dividend - divisor)) | |
| 452 return (((divisor * value) > (dividend - divisor)) | |
| 453 && value <= SkNextPow2(((dividend - 1) / divisor) + 1)); | |
| 454 } | |
| 455 #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX | |
| 456 | |
| 457 | |
| 458 #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A) | |
| 459 #define kBackwards_SkColorType kRGBA_8888_SkColorType | |
| 460 #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A) | |
| 461 #define kBackwards_SkColorType kBGRA_8888_SkColorType | |
| 462 #else | |
| 463 #error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order" | |
| 464 #endif | |
| 465 | |
| 466 static inline const char* SkColorType_to_string(SkColorType colorType) { | |
| 467 switch(colorType) { | |
| 468 case kAlpha_8_SkColorType: return "Alpha_8"; | |
| 469 case kRGB_565_SkColorType: return "RGB_565"; | |
| 470 case kARGB_4444_SkColorType: return "ARGB_4444"; | |
| 471 case kN32_SkColorType: return "N32"; | |
| 472 case kBackwards_SkColorType: return "Backwards"; | |
| 473 case kIndex_8_SkColorType: return "Index_8"; | |
| 474 default: return "ERROR"; | |
| 475 } | |
| 476 } | |
| 477 | |
| 478 static inline const char* options_colorType( | |
| 479 const SkDecodingImageGenerator::Options& opts) { | |
| 480 if (opts.fUseRequestedColorType) { | |
| 481 return SkColorType_to_string(opts.fRequestedColorType); | |
| 482 } else { | |
| 483 return "(none)"; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 static inline const char* yn(bool value) { | |
| 488 if (value) { | |
| 489 return "yes"; | |
| 490 } else { | |
| 491 return "no"; | |
| 492 } | |
| 493 } | |
| 494 | |
| 495 /** | |
| 496 * Given either a SkStream or a SkData, try to decode the encoded | |
| 497 * image using the specified options and report errors. | |
| 498 */ | |
| 499 static void test_options(skiatest::Reporter* reporter, | |
| 500 const SkDecodingImageGenerator::Options& opts, | |
| 501 SkStreamRewindable* encodedStream, | |
| 502 SkData* encodedData, | |
| 503 bool useData, | |
| 504 const SkString& path) { | |
| 505 SkBitmap bm; | |
| 506 SkAutoTDelete<SkImageGenerator> gen; | |
| 507 | |
| 508 if (useData) { | |
| 509 if (nullptr == encodedData) { | |
| 510 return; | |
| 511 } | |
| 512 gen.reset(SkDecodingImageGenerator::Create(encodedData, opts)); | |
| 513 } else { | |
| 514 if (nullptr == encodedStream) { | |
| 515 return; | |
| 516 } | |
| 517 gen.reset(SkDecodingImageGenerator::Create(encodedStream->duplicate(), o
pts)); | |
| 518 } | |
| 519 if (!gen) { | |
| 520 if (opts.fUseRequestedColorType && (kARGB_4444_SkColorType == opts.fRequ
estedColorType)) { | |
| 521 return; // Ignore known conversion inabilities. | |
| 522 } | |
| 523 // If we get here, it's a failure and we will need more | |
| 524 // information about why it failed. | |
| 525 ERRORF(reporter, "Bounds decode failed [sampleSize=%d dither=%s " | |
| 526 "colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage), | |
| 527 options_colorType(opts), path.c_str()); | |
| 528 return; | |
| 529 } | |
| 530 if (!gen->tryGenerateBitmap(&bm)) { | |
| 531 return; | |
| 532 } | |
| 533 | |
| 534 #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| 535 // Android is the only system that use Skia's image decoders in | |
| 536 // production. For now, we'll only verify that samplesize works | |
| 537 // on systems where it already is known to work. | |
| 538 REPORTER_ASSERT(reporter, check_rounding(bm.height(), kExpectedHeight, opts.
fSampleSize)); | |
| 539 REPORTER_ASSERT(reporter, check_rounding(bm.width(), kExpectedWidth, opts.fS
ampleSize)); | |
| 540 // The ImageDecoder API doesn't guarantee that SampleSize does | |
| 541 // anything at all, but the decoders that this test excercises all | |
| 542 // produce an output size in the following range: | |
| 543 // (((sample_size * out_size) > (in_size - sample_size)) | |
| 544 // && out_size <= SkNextPow2(((in_size - 1) / sample_size) + 1)); | |
| 545 #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX | |
| 546 | |
| 547 SkColorType requestedColorType = opts.fRequestedColorType; | |
| 548 REPORTER_ASSERT(reporter, | |
| 549 (!opts.fUseRequestedColorType) | |
| 550 || (bm.colorType() == requestedColorType)); | |
| 551 | |
| 552 // Condition under which we should check the decoding results: | |
| 553 if ((kN32_SkColorType == bm.colorType()) | |
| 554 && (!path.endsWith(".jpg")) // lossy | |
| 555 && (opts.fSampleSize == 1)) { // scaled | |
| 556 const SkColor* correctPixels = kExpectedPixels; | |
| 557 SkASSERT(bm.height() == kExpectedHeight); | |
| 558 SkASSERT(bm.width() == kExpectedWidth); | |
| 559 int pixelErrors = 0; | |
| 560 for (int y = 0; y < bm.height(); ++y) { | |
| 561 for (int x = 0; x < bm.width(); ++x) { | |
| 562 if (*correctPixels != bm.getColor(x, y)) { | |
| 563 ++pixelErrors; | |
| 564 } | |
| 565 ++correctPixels; | |
| 566 } | |
| 567 } | |
| 568 if (pixelErrors != 0) { | |
| 569 ERRORF(reporter, "Pixel-level mismatch (%d of %d) " | |
| 570 "[sampleSize=%d dither=%s colorType=%s %s]", | |
| 571 pixelErrors, kExpectedHeight * kExpectedWidth, | |
| 572 opts.fSampleSize, yn(opts.fDitherImage), | |
| 573 options_colorType(opts), path.c_str()); | |
| 574 } | |
| 575 } | |
| 576 } | |
| 577 | |
| 578 /** | |
| 579 * SkDecodingImageGenerator has an Options struct which lets the | |
| 580 * client of the generator set sample size, dithering, and bitmap | |
| 581 * config. This test loops through many possible options and tries | |
| 582 * them on a set of 5 small encoded images (each in a different | |
| 583 * format). We test both SkData and SkStreamRewindable decoding. | |
| 584 */ | |
| 585 DEF_TEST(ImageDecoderOptions, reporter) { | |
| 586 const char* files[] = { | |
| 587 "randPixels.bmp", | |
| 588 "randPixels.jpg", | |
| 589 "randPixels.png", | |
| 590 "randPixels.webp", | |
| 591 #if !defined(SK_BUILD_FOR_WIN) | |
| 592 // TODO(halcanary): Find out why this fails sometimes. | |
| 593 "randPixels.gif", | |
| 594 #endif | |
| 595 }; | |
| 596 | |
| 597 SkString resourceDir = GetResourcePath(); | |
| 598 if (!sk_exists(resourceDir.c_str())) { | |
| 599 return; | |
| 600 } | |
| 601 | |
| 602 int scaleList[] = {1, 2, 3, 4}; | |
| 603 bool ditherList[] = {true, false}; | |
| 604 SkColorType colorList[] = { | |
| 605 kAlpha_8_SkColorType, | |
| 606 kRGB_565_SkColorType, | |
| 607 kARGB_4444_SkColorType, // Most decoders will fail on 4444. | |
| 608 kN32_SkColorType | |
| 609 // Note that indexed color is left out of the list. Lazy | |
| 610 // decoding doesn't do indexed color. | |
| 611 }; | |
| 612 const bool useDataList[] = {true, false}; | |
| 613 | |
| 614 for (size_t fidx = 0; fidx < SK_ARRAY_COUNT(files); ++fidx) { | |
| 615 SkString path = SkOSPath::Join(resourceDir.c_str(), files[fidx]); | |
| 616 if (!sk_exists(path.c_str())) { | |
| 617 continue; | |
| 618 } | |
| 619 | |
| 620 SkAutoDataUnref encodedData(SkData::NewFromFileName(path.c_str())); | |
| 621 REPORTER_ASSERT(reporter, encodedData.get() != nullptr); | |
| 622 SkAutoTDelete<SkStreamRewindable> encodedStream( | |
| 623 SkStream::NewFromFile(path.c_str())); | |
| 624 REPORTER_ASSERT(reporter, encodedStream.get() != nullptr); | |
| 625 | |
| 626 for (size_t i = 0; i < SK_ARRAY_COUNT(scaleList); ++i) { | |
| 627 for (size_t j = 0; j < SK_ARRAY_COUNT(ditherList); ++j) { | |
| 628 for (size_t m = 0; m < SK_ARRAY_COUNT(useDataList); ++m) { | |
| 629 for (size_t k = 0; k < SK_ARRAY_COUNT(colorList); ++k) { | |
| 630 SkDecodingImageGenerator::Options opts(scaleList[i], | |
| 631 ditherList[j], | |
| 632 colorList[k]); | |
| 633 test_options(reporter, opts, encodedStream, encodedData, | |
| 634 useDataList[m], path); | |
| 635 | |
| 636 } | |
| 637 SkDecodingImageGenerator::Options options(scaleList[i], | |
| 638 ditherList[j]); | |
| 639 test_options(reporter, options, encodedStream, encodedData, | |
| 640 useDataList[m], path); | |
| 641 } | |
| 642 } | |
| 643 } | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 DEF_TEST(DecodingImageGenerator_ColorTableCheck, r) { | |
| 648 SkString resourceDir = GetResourcePath(); | |
| 649 SkString path = SkOSPath::Join(resourceDir.c_str(), "randPixels.gif"); | |
| 650 if (!sk_exists(path.c_str())) { | |
| 651 return; | |
| 652 } | |
| 653 SkAutoDataUnref encoded(SkData::NewFromFileName(path.c_str())); | |
| 654 SkBitmap bitmap; | |
| 655 SkAutoTDelete<SkImageGenerator> gen(SkDecodingImageGenerator::Create(encoded
, | |
| 656 SkDecodingImageGene
rator::Options())); | |
| 657 if (!gen) { | |
| 658 REPORTER_ASSERT(r, false); | |
| 659 return; | |
| 660 } | |
| 661 if (!gen->tryGenerateBitmap(&bitmap)) { | |
| 662 REPORTER_ASSERT(r, false); | |
| 663 return; | |
| 664 } | |
| 665 if (kIndex_8_SkColorType != bitmap.colorType()) { | |
| 666 return; | |
| 667 } | |
| 668 REPORTER_ASSERT(r, bitmap.getColorTable()); | |
| 669 } | |
| 670 | |
| 671 | |
| 672 //////////////////////////////////////////////////////////////////////////////// | |
| 673 namespace { | |
| 674 class SingleAllocator : public SkBitmap::Allocator { | |
| 675 public: | |
| 676 SingleAllocator(void* p, size_t s) : fPixels(p), fSize(s) { } | |
| 677 ~SingleAllocator() {} | |
| 678 // If the pixels in fPixels are big enough, use them. | |
| 679 bool allocPixelRef(SkBitmap* bm, SkColorTable* ct) override { | |
| 680 SkASSERT(bm); | |
| 681 if (bm->info().getSafeSize(bm->rowBytes()) <= fSize) { | |
| 682 bm->setPixels(fPixels, ct); | |
| 683 fPixels = nullptr; | |
| 684 fSize = 0; | |
| 685 return true; | |
| 686 } | |
| 687 return bm->tryAllocPixels(nullptr, ct); | |
| 688 } | |
| 689 bool ready() { return fPixels != nullptr; } | |
| 690 private: | |
| 691 void* fPixels; | |
| 692 size_t fSize; | |
| 693 }; | |
| 694 } // namespace | |
| 695 | |
| 696 /* This tests for a bug in libjpeg where INT32 is typedefed to long | |
| 697 and memory can be written to outside of the array. */ | |
| 698 DEF_TEST(ImageDecoding_JpegOverwrite, r) { | |
| 699 SkString resourceDir = GetResourcePath(); | |
| 700 SkString path = SkOSPath::Join(resourceDir.c_str(), "randPixels.jpg"); | |
| 701 SkAutoTDelete<SkStreamAsset> stream( | |
| 702 SkStream::NewFromFile(path.c_str())); | |
| 703 if (!stream.get()) { | |
| 704 SkDebugf("\nPath '%s' missing.\n", path.c_str()); | |
| 705 return; | |
| 706 } | |
| 707 SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream)); | |
| 708 if (nullptr == decoder.get()) { | |
| 709 ERRORF(r, "\nSkImageDecoder::Factory failed.\n"); | |
| 710 return; | |
| 711 } | |
| 712 SkAssertResult(stream->rewind()); | |
| 713 | |
| 714 static const uint16_t sentinal = 0xBEEF; | |
| 715 static const int pixelCount = 16; | |
| 716 SkAutoTMalloc<uint16_t> pixels(pixelCount + 1); | |
| 717 // pixels.get() should be 4-byte aligned. | |
| 718 // This is necessary to reproduce the bug. | |
| 719 | |
| 720 pixels[pixelCount] = sentinal; // This value should not be changed. | |
| 721 | |
| 722 SkAutoTUnref<SingleAllocator> allocator( | |
| 723 new SingleAllocator((void*)pixels.get(), sizeof(uint16_t) * pixelCou
nt)); | |
| 724 decoder->setAllocator(allocator); | |
| 725 decoder->setSampleSize(2); | |
| 726 SkBitmap bitmap; | |
| 727 bool success = decoder->decode(stream, &bitmap, kRGB_565_SkColorType, | |
| 728 SkImageDecoder::kDecodePixels_Mode) != SkImag
eDecoder::kFailure; | |
| 729 REPORTER_ASSERT(r, success); | |
| 730 REPORTER_ASSERT(r, !allocator->ready()); // Decoder used correct memory | |
| 731 REPORTER_ASSERT(r, sentinal == pixels[pixelCount]); | |
| 732 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1692053002:
Delete SkDecodingImageGenerator (Closed)
Base URL: https://skia.googlesource.com/skia.git@noble