scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 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" |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 9 | #include "SkCanvas.h" |
| 10 | #include "SkColor.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 11 | #include "SkColorPriv.h" |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 12 | #include "SkData.h" |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 13 | #include "SkDecodingImageGenerator.h" |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 14 | #include "SkDiscardableMemoryPool.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 15 | #include "SkForceLinking.h" |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 16 | #include "SkGradientShader.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 17 | #include "SkImageDecoder.h" |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 18 | #include "SkImageEncoder.h" |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 19 | #include "SkImageGenerator.h" |
| 20 | #include "SkImagePriv.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 21 | #include "SkOSFile.h" |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 22 | #include "SkPoint.h" |
| 23 | #include "SkShader.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 24 | #include "SkStream.h" |
| 25 | #include "SkString.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame^] | 26 | #include "Test.h" |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 27 | |
| 28 | __SK_FORCE_IMAGE_DECODER_LINKING; |
| 29 | |
| 30 | /** |
| 31 | * Interprets c as an unpremultiplied color, and returns the |
| 32 | * premultiplied equivalent. |
| 33 | */ |
| 34 | static SkPMColor premultiply_unpmcolor(SkPMColor c) { |
| 35 | U8CPU a = SkGetPackedA32(c); |
| 36 | U8CPU r = SkGetPackedR32(c); |
| 37 | U8CPU g = SkGetPackedG32(c); |
| 38 | U8CPU b = SkGetPackedB32(c); |
| 39 | return SkPreMultiplyARGB(a, r, g, b); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Return true if this stream format should be skipped, due |
| 44 | * to do being an opaque format or not a valid format. |
| 45 | */ |
| 46 | static bool skip_image_format(SkImageDecoder::Format format) { |
| 47 | switch (format) { |
| 48 | case SkImageDecoder::kPNG_Format: |
| 49 | case SkImageDecoder::kWEBP_Format: |
| 50 | return false; |
| 51 | // Skip unknown since it will not be decoded anyway. |
| 52 | case SkImageDecoder::kUnknown_Format: |
| 53 | // Technically ICO and BMP supports alpha channels, but our image |
| 54 | // decoders do not, so skip them as well. |
| 55 | case SkImageDecoder::kICO_Format: |
| 56 | case SkImageDecoder::kBMP_Format: |
| 57 | // The rest of these are opaque. |
| 58 | case SkImageDecoder::kWBMP_Format: |
| 59 | case SkImageDecoder::kGIF_Format: |
| 60 | case SkImageDecoder::kJPEG_Format: |
| 61 | return true; |
| 62 | } |
| 63 | SkASSERT(false); |
| 64 | return true; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Test decoding an image in premultiplied mode and unpremultiplied mode and compare |
| 69 | * them. |
| 70 | */ |
| 71 | static void compare_unpremul(skiatest::Reporter* reporter, const SkString& filename) { |
| 72 | // Decode a resource: |
| 73 | SkBitmap bm8888; |
| 74 | SkBitmap bm8888Unpremul; |
| 75 | |
| 76 | SkFILEStream stream(filename.c_str()); |
| 77 | |
| 78 | SkImageDecoder::Format format = SkImageDecoder::GetStreamFormat(&stream); |
| 79 | if (skip_image_format(format)) { |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); |
| 84 | if (NULL == decoder.get()) { |
| 85 | SkDebugf("couldn't decode %s\n", filename.c_str()); |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | bool success = decoder->decode(&stream, &bm8888, SkBitmap::kARGB_8888_Config, |
| 90 | SkImageDecoder::kDecodePixels_Mode); |
| 91 | if (!success) { |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | success = stream.rewind(); |
| 96 | REPORTER_ASSERT(reporter, success); |
| 97 | if (!success) { |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | decoder->setRequireUnpremultipliedColors(true); |
| 102 | success = decoder->decode(&stream, &bm8888Unpremul, SkBitmap::kARGB_8888_Config, |
| 103 | SkImageDecoder::kDecodePixels_Mode); |
| 104 | if (!success) { |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | bool dimensionsMatch = bm8888.width() == bm8888Unpremul.width() |
| 109 | && bm8888.height() == bm8888Unpremul.height(); |
| 110 | REPORTER_ASSERT(reporter, dimensionsMatch); |
| 111 | if (!dimensionsMatch) { |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | // Only do the comparison if the two bitmaps are both 8888. |
| 116 | if (bm8888.config() != SkBitmap::kARGB_8888_Config |
| 117 | || bm8888Unpremul.config() != SkBitmap::kARGB_8888_Config) { |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | // Now compare the two bitmaps. |
| 122 | for (int i = 0; i < bm8888.width(); ++i) { |
| 123 | for (int j = 0; j < bm8888.height(); ++j) { |
| 124 | // "c0" is the color of the premultiplied bitmap at (i, j). |
| 125 | const SkPMColor c0 = *bm8888.getAddr32(i, j); |
| 126 | // "c1" is the result of premultiplying the color of the unpremultiplied |
| 127 | // bitmap at (i, j). |
| 128 | const SkPMColor c1 = premultiply_unpmcolor(*bm8888Unpremul.getAddr32(i, j)); |
| 129 | // Compute the difference for each component. |
| 130 | int da = SkAbs32(SkGetPackedA32(c0) - SkGetPackedA32(c1)); |
| 131 | int dr = SkAbs32(SkGetPackedR32(c0) - SkGetPackedR32(c1)); |
| 132 | int dg = SkAbs32(SkGetPackedG32(c0) - SkGetPackedG32(c1)); |
| 133 | int db = SkAbs32(SkGetPackedB32(c0) - SkGetPackedB32(c1)); |
| 134 | |
| 135 | // Alpha component must be exactly the same. |
| 136 | REPORTER_ASSERT(reporter, 0 == da); |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 137 | |
| 138 | // Color components may not match exactly due to rounding error. |
| 139 | REPORTER_ASSERT(reporter, dr <= 1); |
| 140 | REPORTER_ASSERT(reporter, dg <= 1); |
| 141 | REPORTER_ASSERT(reporter, db <= 1); |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
scroggo@google.com | f698c82 | 2013-07-18 19:34:49 +0000 | [diff] [blame] | 146 | static void test_unpremul(skiatest::Reporter* reporter) { |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 147 | // This test cannot run if there is no resource path. |
| 148 | SkString resourcePath = skiatest::Test::GetResourcePath(); |
| 149 | if (resourcePath.isEmpty()) { |
bungeman@google.com | 3c996f8 | 2013-10-24 21:39:35 +0000 | [diff] [blame] | 150 | SkDebugf("Could not run unpremul test because resourcePath not specified."); |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 151 | return; |
| 152 | } |
| 153 | SkOSFile::Iter iter(resourcePath.c_str()); |
| 154 | SkString basename; |
| 155 | if (iter.next(&basename)) { |
| 156 | do { |
| 157 | SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str()); |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 158 | // SkDebugf("about to decode \"%s\"\n", filename.c_str()); |
scroggo@google.com | 2bbc2c9 | 2013-06-14 15:33:20 +0000 | [diff] [blame] | 159 | compare_unpremul(reporter, filename); |
| 160 | } while (iter.next(&basename)); |
| 161 | } else { |
| 162 | SkDebugf("Failed to find any files :(\n"); |
| 163 | } |
| 164 | } |
| 165 | |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 166 | #ifdef SK_DEBUG |
| 167 | // Create a stream containing a bitmap encoded to Type type. |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 168 | static SkMemoryStream* create_image_stream(SkImageEncoder::Type type) { |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 169 | SkBitmap bm; |
| 170 | const int size = 50; |
| 171 | bm.setConfig(SkBitmap::kARGB_8888_Config, size, size); |
| 172 | bm.allocPixels(); |
| 173 | SkCanvas canvas(bm); |
| 174 | SkPoint points[2] = { |
| 175 | { SkIntToScalar(0), SkIntToScalar(0) }, |
| 176 | { SkIntToScalar(size), SkIntToScalar(size) } |
| 177 | }; |
| 178 | SkColor colors[2] = { SK_ColorWHITE, SK_ColorBLUE }; |
| 179 | SkShader* shader = SkGradientShader::CreateLinear(points, colors, NULL, |
| 180 | SK_ARRAY_COUNT(colors), |
| 181 | SkShader::kClamp_TileMode); |
| 182 | SkPaint paint; |
| 183 | paint.setShader(shader)->unref(); |
| 184 | canvas.drawPaint(paint); |
| 185 | // Now encode it to a stream. |
| 186 | SkAutoTUnref<SkData> data(SkImageEncoder::EncodeData(bm, type, 100)); |
| 187 | if (NULL == data.get()) { |
| 188 | return NULL; |
| 189 | } |
| 190 | return SkNEW_ARGS(SkMemoryStream, (data.get())); |
| 191 | } |
| 192 | |
| 193 | // For every format that supports tile based decoding, ensure that |
| 194 | // calling decodeSubset will not fail if the caller has unreffed the |
| 195 | // stream provided in buildTileIndex. |
| 196 | // Only runs in debug mode since we are testing for a crash. |
| 197 | static void test_stream_life() { |
| 198 | const SkImageEncoder::Type gTypes[] = { |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 199 | #ifdef SK_BUILD_FOR_ANDROID |
scroggo@google.com | d79277f | 2013-08-07 19:53:53 +0000 | [diff] [blame] | 200 | SkImageEncoder::kJPEG_Type, |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 201 | SkImageEncoder::kPNG_Type, |
| 202 | #endif |
| 203 | SkImageEncoder::kWEBP_Type, |
| 204 | }; |
| 205 | for (size_t i = 0; i < SK_ARRAY_COUNT(gTypes); ++i) { |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 206 | // SkDebugf("encoding to %i\n", i); |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 207 | SkAutoTUnref<SkMemoryStream> stream(create_image_stream(gTypes[i])); |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 208 | if (NULL == stream.get()) { |
| 209 | SkDebugf("no stream\n"); |
| 210 | continue; |
| 211 | } |
| 212 | SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream)); |
| 213 | if (NULL == decoder.get()) { |
| 214 | SkDebugf("no decoder\n"); |
| 215 | continue; |
| 216 | } |
| 217 | int width, height; |
| 218 | if (!decoder->buildTileIndex(stream.get(), &width, &height)) { |
| 219 | SkDebugf("could not build a tile index\n"); |
| 220 | continue; |
| 221 | } |
| 222 | // Now unref the stream to make sure it survives |
| 223 | stream.reset(NULL); |
| 224 | SkBitmap bm; |
| 225 | decoder->decodeSubset(&bm, SkIRect::MakeWH(width, height), |
| 226 | SkBitmap::kARGB_8888_Config); |
| 227 | } |
| 228 | } |
scroggo@google.com | 8d23924 | 2013-10-01 17:27:15 +0000 | [diff] [blame] | 229 | |
| 230 | // Test inside SkScaledBitmapSampler.cpp |
| 231 | extern void test_row_proc_choice(); |
| 232 | |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 233 | #endif // SK_DEBUG |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 234 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 235 | DEF_TEST(ImageDecoding, reporter) { |
scroggo@google.com | f698c82 | 2013-07-18 19:34:49 +0000 | [diff] [blame] | 236 | test_unpremul(reporter); |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 237 | #ifdef SK_DEBUG |
| 238 | test_stream_life(); |
scroggo@google.com | 8d23924 | 2013-10-01 17:27:15 +0000 | [diff] [blame] | 239 | test_row_proc_choice(); |
scroggo@google.com | 826d63a | 2013-07-18 20:06:28 +0000 | [diff] [blame] | 240 | #endif |
scroggo@google.com | f698c82 | 2013-07-18 19:34:49 +0000 | [diff] [blame] | 241 | } |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 242 | |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 243 | // expected output for 8x8 bitmap |
tfarina@chromium.org | 5867481 | 2014-01-21 23:39:22 +0000 | [diff] [blame] | 244 | static const int kExpectedWidth = 8; |
| 245 | static const int kExpectedHeight = 8; |
| 246 | static const SkColor kExpectedPixels[] = { |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 247 | 0xffbba570, 0xff395f5d, 0xffe25c39, 0xff197666, |
| 248 | 0xff3cba27, 0xffdefcb0, 0xffc13874, 0xfffa0093, |
| 249 | 0xffbda60e, 0xffc01db6, 0xff2bd688, 0xff9362d4, |
| 250 | 0xffc641b2, 0xffa5cede, 0xff606eba, 0xff8f4bf3, |
| 251 | 0xff3bf742, 0xff8f02a8, 0xff5509df, 0xffc7027e, |
| 252 | 0xff24aa8a, 0xff886c96, 0xff625481, 0xff403689, |
| 253 | 0xffc52152, 0xff78ccd6, 0xffdcb4ab, 0xff09d27d, |
| 254 | 0xffca00f3, 0xff605d47, 0xff446fb2, 0xff576e46, |
| 255 | 0xff273df9, 0xffb41a83, 0xfff812c3, 0xffccab67, |
| 256 | 0xff034218, 0xff7db9a7, 0xff821048, 0xfffe4ab4, |
| 257 | 0xff6fac98, 0xff941d27, 0xff5fe411, 0xfffbb283, |
| 258 | 0xffd86e99, 0xff169162, 0xff71128c, 0xff39cab4, |
| 259 | 0xffa7fe63, 0xff4c956b, 0xffbc22e0, 0xffb272e4, |
| 260 | 0xff129f4a, 0xffe34513, 0xff3d3742, 0xffbd190a, |
| 261 | 0xffb07222, 0xff2e23f8, 0xfff089d9, 0xffb35738, |
| 262 | 0xffa86022, 0xff3340fe, 0xff95fe71, 0xff6a71df |
| 263 | }; |
| 264 | SK_COMPILE_ASSERT((kExpectedWidth * kExpectedHeight) |
| 265 | == SK_ARRAY_COUNT(kExpectedPixels), array_size_mismatch); |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 266 | |
| 267 | DEF_TEST(WebP, reporter) { |
| 268 | const unsigned char encodedWebP[] = { |
| 269 | 0x52, 0x49, 0x46, 0x46, 0x2c, 0x01, 0x00, 0x00, 0x57, 0x45, 0x42, 0x50, |
| 270 | 0x56, 0x50, 0x38, 0x4c, 0x20, 0x01, 0x00, 0x00, 0x2f, 0x07, 0xc0, 0x01, |
| 271 | 0x00, 0xff, 0x01, 0x45, 0x03, 0x00, 0xe2, 0xd5, 0xae, 0x60, 0x2b, 0xad, |
| 272 | 0xd9, 0x68, 0x76, 0xb6, 0x8d, 0x6a, 0x1d, 0xc0, 0xe6, 0x19, 0xd6, 0x16, |
| 273 | 0xb7, 0xb4, 0xef, 0xcf, 0xc3, 0x15, 0x6c, 0xb3, 0xbd, 0x77, 0x0d, 0x85, |
| 274 | 0x6d, 0x1b, 0xa9, 0xb1, 0x2b, 0xdc, 0x3d, 0x83, 0xdb, 0x00, 0x00, 0xc8, |
| 275 | 0x26, 0xe5, 0x01, 0x99, 0x8a, 0xd5, 0xdd, 0xfc, 0x82, 0xcd, 0xcd, 0x9a, |
| 276 | 0x8c, 0x13, 0xcc, 0x1b, 0xba, 0xf5, 0x05, 0xdb, 0xee, 0x6a, 0xdb, 0x38, |
| 277 | 0x60, 0xfe, 0x43, 0x2c, 0xd4, 0x6a, 0x99, 0x4d, 0xc6, 0xc0, 0xd3, 0x28, |
| 278 | 0x1b, 0xc1, 0xb1, 0x17, 0x4e, 0x43, 0x0e, 0x3d, 0x27, 0xe9, 0xe4, 0x84, |
| 279 | 0x4f, 0x24, 0x62, 0x69, 0x85, 0x43, 0x8d, 0xc2, 0x04, 0x00, 0x07, 0x59, |
| 280 | 0x60, 0xfd, 0x8b, 0x4d, 0x60, 0x32, 0x72, 0xcf, 0x88, 0x0c, 0x2f, 0x2f, |
| 281 | 0xad, 0x62, 0xbd, 0x27, 0x09, 0x16, 0x70, 0x78, 0x6c, 0xd9, 0x82, 0xef, |
| 282 | 0x1a, 0xa2, 0xcc, 0xf0, 0xf1, 0x6f, 0xd8, 0x78, 0x2e, 0x39, 0xa1, 0xcf, |
| 283 | 0x14, 0x4b, 0x89, 0xb4, 0x1b, 0x48, 0x15, 0x7c, 0x48, 0x6f, 0x8c, 0x20, |
| 284 | 0xb7, 0x00, 0xcf, 0xfc, 0xdb, 0xd0, 0xe9, 0xe7, 0x42, 0x09, 0xa4, 0x03, |
| 285 | 0x40, 0xac, 0xda, 0x40, 0x01, 0x00, 0x5f, 0xa1, 0x3d, 0x64, 0xe1, 0xf4, |
| 286 | 0x03, 0x45, 0x29, 0xe0, 0xe2, 0x4a, 0xc3, 0xa2, 0xe8, 0xe0, 0x25, 0x12, |
| 287 | 0x74, 0xc6, 0xe8, 0xfb, 0x93, 0x4f, 0x9f, 0x5e, 0xc0, 0xa6, 0x91, 0x1b, |
| 288 | 0xa4, 0x24, 0x82, 0xc3, 0x61, 0x07, 0x4c, 0x49, 0x4f, 0x53, 0xae, 0x5f, |
| 289 | 0x5d, 0x39, 0x36, 0xc0, 0x5b, 0x57, 0x54, 0x60, 0x10, 0x00, 0x00, 0xd1, |
| 290 | 0x68, 0xb6, 0x6d, 0xdb, 0x36, 0x22, 0xfa, 0x1f, 0x35, 0x75, 0x22, 0xec, |
| 291 | 0x31, 0xbc, 0x5d, 0x8f, 0x87, 0x53, 0xa2, 0x05, 0x8c, 0x2f, 0xcd, 0xa8, |
| 292 | 0xa7, 0xf3, 0xa3, 0xbd, 0x83, 0x8b, 0x2a, 0xc8, 0x58, 0xf5, 0xac, 0x80, |
| 293 | 0xe3, 0xfe, 0x66, 0xa4, 0x7c, 0x1b, 0x6c, 0xd1, 0xa9, 0xd8, 0x14, 0xd0, |
| 294 | 0xc5, 0xb5, 0x39, 0x71, 0x97, 0x19, 0x19, 0x1b |
| 295 | }; |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 296 | SkAutoDataUnref encoded(SkData::NewWithCopy(encodedWebP, |
| 297 | sizeof(encodedWebP))); |
| 298 | SkBitmap bm; |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 299 | |
| 300 | bool success = SkInstallDiscardablePixelRef( |
| 301 | SkDecodingImageGenerator::Create(encoded, |
| 302 | SkDecodingImageGenerator::Options()), &bm, NULL); |
| 303 | |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 304 | REPORTER_ASSERT(reporter, success); |
| 305 | if (!success) { |
| 306 | return; |
| 307 | } |
| 308 | SkAutoLockPixels alp(bm); |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 309 | |
skia.committer@gmail.com | 8620207 | 2014-01-03 07:01:45 +0000 | [diff] [blame] | 310 | bool rightSize = ((kExpectedWidth == bm.width()) |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 311 | && (kExpectedHeight == bm.height())); |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 312 | REPORTER_ASSERT(reporter, rightSize); |
| 313 | if (rightSize) { |
| 314 | bool error = false; |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 315 | const SkColor* correctPixel = kExpectedPixels; |
halcanary@google.com | dedd44a | 2013-12-20 16:35:22 +0000 | [diff] [blame] | 316 | for (int y = 0; y < bm.height(); ++y) { |
| 317 | for (int x = 0; x < bm.width(); ++x) { |
| 318 | error |= (*correctPixel != bm.getColor(x, y)); |
| 319 | ++correctPixel; |
| 320 | } |
| 321 | } |
| 322 | REPORTER_ASSERT(reporter, !error); |
| 323 | } |
| 324 | } |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 325 | |
| 326 | //////////////////////////////////////////////////////////////////////////////// |
| 327 | |
| 328 | // example of how Android will do this inside their BitmapFactory |
| 329 | static SkPixelRef* install_pixel_ref(SkBitmap* bitmap, |
| 330 | SkStreamRewindable* stream, |
| 331 | int sampleSize, bool ditherImage) { |
| 332 | SkASSERT(bitmap != NULL); |
| 333 | SkASSERT(stream != NULL); |
| 334 | SkASSERT(stream->rewind()); |
| 335 | SkASSERT(stream->unique()); |
| 336 | SkColorType colorType; |
| 337 | if (!SkBitmapConfigToColorType(bitmap->config(), &colorType)) { |
| 338 | return NULL; |
| 339 | } |
| 340 | SkDecodingImageGenerator::Options opts(sampleSize, ditherImage, colorType); |
| 341 | SkAutoTDelete<SkImageGenerator> gen( |
| 342 | SkDecodingImageGenerator::Create(stream, opts)); |
| 343 | SkImageInfo info; |
| 344 | if ((NULL == gen.get()) || !gen->getInfo(&info)) { |
| 345 | return NULL; |
| 346 | } |
| 347 | SkDiscardableMemory::Factory* factory = NULL; |
| 348 | if (info.getSafeSize(info.minRowBytes()) < (32 * 1024)) { |
| 349 | // only use ashmem for large images, since mmaps come at a price |
| 350 | factory = SkGetGlobalDiscardableMemoryPool(); |
| 351 | } |
| 352 | if (SkInstallDiscardablePixelRef(gen.detach(), bitmap, factory)) { |
| 353 | return bitmap->pixelRef(); |
| 354 | } |
| 355 | return NULL; |
| 356 | } |
| 357 | /** |
| 358 | * A test for the SkDecodingImageGenerator::Create and |
| 359 | * SkInstallDiscardablePixelRef functions. |
| 360 | */ |
| 361 | DEF_TEST(ImprovedBitmapFactory, reporter) { |
| 362 | SkString resourcePath = skiatest::Test::GetResourcePath(); |
| 363 | SkString directory = SkOSPath::SkPathJoin(resourcePath.c_str(), "encoding"); |
| 364 | SkString path = SkOSPath::SkPathJoin(directory.c_str(), "randPixels.png"); |
| 365 | SkAutoTUnref<SkStreamRewindable> stream( |
| 366 | SkStream::NewFromFile(path.c_str())); |
| 367 | if (sk_exists(path.c_str())) { |
| 368 | SkBitmap bm; |
| 369 | SkAssertResult(bm.setConfig(SkBitmap::kARGB_8888_Config, 1, 1)); |
| 370 | REPORTER_ASSERT(reporter, |
| 371 | NULL != install_pixel_ref(&bm, stream.detach(), 1, true)); |
| 372 | SkAutoLockPixels alp(bm); |
| 373 | REPORTER_ASSERT(reporter, NULL != bm.getPixels()); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | |
| 378 | //////////////////////////////////////////////////////////////////////////////// |
| 379 | |
| 380 | #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) |
| 381 | static inline bool check_rounding(int value, int dividend, int divisor) { |
| 382 | // returns true if (dividend/divisor) rounds up OR down to value |
| 383 | return (((divisor * value) > (dividend - divisor)) |
| 384 | && ((divisor * value) < (dividend + divisor))); |
| 385 | } |
| 386 | #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX |
| 387 | |
| 388 | |
| 389 | #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A) |
| 390 | #define kBackwards_SkColorType kRGBA_8888_SkColorType |
| 391 | #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A) |
| 392 | #define kBackwards_SkColorType kBGRA_8888_SkColorType |
| 393 | #else |
| 394 | #error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order" |
| 395 | #endif |
| 396 | |
| 397 | static inline const char* SkColorType_to_string(SkColorType colorType) { |
| 398 | switch(colorType) { |
| 399 | case kAlpha_8_SkColorType: return "Alpha_8"; |
| 400 | case kRGB_565_SkColorType: return "RGB_565"; |
| 401 | case kARGB_4444_SkColorType: return "ARGB_4444"; |
| 402 | case kPMColor_SkColorType: return "PMColor"; |
| 403 | case kBackwards_SkColorType: return "Backwards"; |
| 404 | case kIndex_8_SkColorType: return "Index_8"; |
| 405 | default: return "ERROR"; |
| 406 | } |
| 407 | } |
| 408 | |
halcanary@google.com | a9325fa | 2014-01-10 14:58:10 +0000 | [diff] [blame] | 409 | static inline const char* options_colorType( |
| 410 | const SkDecodingImageGenerator::Options& opts) { |
| 411 | if (opts.fUseRequestedColorType) { |
| 412 | return SkColorType_to_string(opts.fRequestedColorType); |
| 413 | } else { |
| 414 | return "(none)"; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | static inline const char* yn(bool value) { |
| 419 | if (value) { |
| 420 | return "yes"; |
| 421 | } else { |
| 422 | return "no"; |
| 423 | } |
| 424 | } |
| 425 | |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 426 | /** |
| 427 | * Given either a SkStream or a SkData, try to decode the encoded |
| 428 | * image using the specified options and report errors. |
| 429 | */ |
| 430 | static void test_options(skiatest::Reporter* reporter, |
| 431 | const SkDecodingImageGenerator::Options& opts, |
| 432 | SkStreamRewindable* encodedStream, |
| 433 | SkData* encodedData, |
| 434 | bool useData, |
| 435 | const SkString& path) { |
| 436 | SkBitmap bm; |
| 437 | bool success = false; |
| 438 | if (useData) { |
| 439 | if (NULL == encodedData) { |
| 440 | return; |
| 441 | } |
| 442 | success = SkInstallDiscardablePixelRef( |
| 443 | SkDecodingImageGenerator::Create(encodedData, opts), &bm, NULL); |
| 444 | } else { |
| 445 | if (NULL == encodedStream) { |
| 446 | return; |
| 447 | } |
| 448 | success = SkInstallDiscardablePixelRef( |
| 449 | SkDecodingImageGenerator::Create(encodedStream->duplicate(), opts), |
| 450 | &bm, NULL); |
| 451 | } |
| 452 | if (!success) { |
| 453 | if (opts.fUseRequestedColorType |
| 454 | && (kARGB_4444_SkColorType == opts.fRequestedColorType)) { |
| 455 | return; // Ignore known conversion inabilities. |
| 456 | } |
| 457 | // If we get here, it's a failure and we will need more |
| 458 | // information about why it failed. |
halcanary@google.com | a9325fa | 2014-01-10 14:58:10 +0000 | [diff] [blame] | 459 | ERRORF(reporter, "Bounds decode failed [sampleSize=%d dither=%s " |
| 460 | "colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage), |
| 461 | options_colorType(opts), path.c_str()); |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 462 | return; |
| 463 | } |
| 464 | #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) |
| 465 | // Android is the only system that use Skia's image decoders in |
| 466 | // production. For now, we'll only verify that samplesize works |
| 467 | // on systems where it already is known to work. |
| 468 | REPORTER_ASSERT(reporter, check_rounding(bm.height(), kExpectedHeight, |
| 469 | opts.fSampleSize)); |
| 470 | REPORTER_ASSERT(reporter, check_rounding(bm.width(), kExpectedWidth, |
| 471 | opts.fSampleSize)); |
| 472 | #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX |
| 473 | SkAutoLockPixels alp(bm); |
| 474 | if (bm.getPixels() == NULL) { |
halcanary@google.com | a9325fa | 2014-01-10 14:58:10 +0000 | [diff] [blame] | 475 | ERRORF(reporter, "Pixel decode failed [sampleSize=%d dither=%s " |
| 476 | "colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage), |
| 477 | options_colorType(opts), path.c_str()); |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 478 | return; |
| 479 | } |
| 480 | |
| 481 | SkBitmap::Config requestedConfig |
| 482 | = SkColorTypeToBitmapConfig(opts.fRequestedColorType); |
| 483 | REPORTER_ASSERT(reporter, |
| 484 | (!opts.fUseRequestedColorType) |
| 485 | || (bm.config() == requestedConfig)); |
| 486 | |
| 487 | // Condition under which we should check the decoding results: |
| 488 | if ((SkBitmap::kARGB_8888_Config == bm.config()) |
| 489 | && (!path.endsWith(".jpg")) // lossy |
| 490 | && (opts.fSampleSize == 1)) { // scaled |
| 491 | const SkColor* correctPixels = kExpectedPixels; |
| 492 | SkASSERT(bm.height() == kExpectedHeight); |
| 493 | SkASSERT(bm.width() == kExpectedWidth); |
| 494 | int pixelErrors = 0; |
| 495 | for (int y = 0; y < bm.height(); ++y) { |
| 496 | for (int x = 0; x < bm.width(); ++x) { |
| 497 | if (*correctPixels != bm.getColor(x, y)) { |
| 498 | ++pixelErrors; |
| 499 | } |
| 500 | ++correctPixels; |
| 501 | } |
| 502 | } |
| 503 | if (pixelErrors != 0) { |
halcanary@google.com | a9325fa | 2014-01-10 14:58:10 +0000 | [diff] [blame] | 504 | ERRORF(reporter, "Pixel-level mismatch (%d of %d) " |
| 505 | "[sampleSize=%d dither=%s colorType=%s %s]", |
| 506 | pixelErrors, kExpectedHeight * kExpectedWidth, |
| 507 | opts.fSampleSize, yn(opts.fDitherImage), |
| 508 | options_colorType(opts), path.c_str()); |
halcanary@google.com | 3d50ea1 | 2014-01-02 13:15:13 +0000 | [diff] [blame] | 509 | } |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * SkDecodingImageGenerator has an Options struct which lets the |
| 515 | * client of the generator set sample size, dithering, and bitmap |
| 516 | * config. This test loops through many possible options and tries |
| 517 | * them on a set of 5 small encoded images (each in a different |
| 518 | * format). We test both SkData and SkStreamRewindable decoding. |
| 519 | */ |
| 520 | DEF_TEST(ImageDecoderOptions, reporter) { |
| 521 | const char* files[] = { |
| 522 | "randPixels.bmp", |
| 523 | "randPixels.jpg", |
| 524 | "randPixels.png", |
| 525 | "randPixels.webp", |
| 526 | #if !defined(SK_BUILD_FOR_WIN) |
| 527 | // TODO(halcanary): Find out why this fails sometimes. |
| 528 | "randPixels.gif", |
| 529 | #endif |
| 530 | }; |
| 531 | |
| 532 | SkString resourceDir = skiatest::Test::GetResourcePath(); |
| 533 | SkString directory = SkOSPath::SkPathJoin(resourceDir.c_str(), "encoding"); |
| 534 | if (!sk_exists(directory.c_str())) { |
| 535 | return; |
| 536 | } |
| 537 | |
| 538 | int scaleList[] = {1, 2, 3, 4}; |
| 539 | bool ditherList[] = {true, false}; |
| 540 | SkColorType colorList[] = { |
| 541 | kAlpha_8_SkColorType, |
| 542 | kRGB_565_SkColorType, |
| 543 | kARGB_4444_SkColorType, // Most decoders will fail on 4444. |
| 544 | kPMColor_SkColorType |
| 545 | // Note that indexed color is left out of the list. Lazy |
| 546 | // decoding doesn't do indexed color. |
| 547 | }; |
| 548 | const bool useDataList[] = {true, false}; |
| 549 | |
| 550 | for (size_t fidx = 0; fidx < SK_ARRAY_COUNT(files); ++fidx) { |
| 551 | SkString path = SkOSPath::SkPathJoin(directory.c_str(), files[fidx]); |
| 552 | if (!sk_exists(path.c_str())) { |
| 553 | continue; |
| 554 | } |
| 555 | |
| 556 | SkAutoDataUnref encodedData(SkData::NewFromFileName(path.c_str())); |
| 557 | REPORTER_ASSERT(reporter, encodedData.get() != NULL); |
| 558 | SkAutoTUnref<SkStreamRewindable> encodedStream( |
| 559 | SkStream::NewFromFile(path.c_str())); |
| 560 | REPORTER_ASSERT(reporter, encodedStream.get() != NULL); |
| 561 | |
| 562 | for (size_t i = 0; i < SK_ARRAY_COUNT(scaleList); ++i) { |
| 563 | for (size_t j = 0; j < SK_ARRAY_COUNT(ditherList); ++j) { |
| 564 | for (size_t m = 0; m < SK_ARRAY_COUNT(useDataList); ++m) { |
| 565 | for (size_t k = 0; k < SK_ARRAY_COUNT(colorList); ++k) { |
| 566 | SkDecodingImageGenerator::Options opts(scaleList[i], |
| 567 | ditherList[j], |
| 568 | colorList[k]); |
| 569 | test_options(reporter, opts, encodedStream, encodedData, |
| 570 | useDataList[m], path); |
| 571 | |
| 572 | } |
| 573 | SkDecodingImageGenerator::Options options(scaleList[i], |
| 574 | ditherList[j]); |
| 575 | test_options(reporter, options, encodedStream, encodedData, |
| 576 | useDataList[m], path); |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | } |
| 581 | } |