scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 | |
Ben Wagner | b607a8f | 2018-03-12 13:46:21 -0400 | [diff] [blame] | 8 | #include "FakeStreams.h" |
| 9 | #include "Resources.h" |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 10 | #include "SkBitmap.h" |
| 11 | #include "SkCodec.h" |
| 12 | #include "SkData.h" |
| 13 | #include "SkImageInfo.h" |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 14 | #include "SkMakeUnique.h" |
Ben Wagner | b607a8f | 2018-03-12 13:46:21 -0400 | [diff] [blame] | 15 | #include "SkRefCnt.h" |
| 16 | #include "SkStream.h" |
| 17 | #include "SkTypes.h" |
Ben Wagner | 501c17c | 2018-03-12 20:04:31 +0000 | [diff] [blame] | 18 | #include "Test.h" |
Ben Wagner | 1a462bd | 2018-03-12 13:46:21 -0400 | [diff] [blame] | 19 | |
Ben Wagner | b607a8f | 2018-03-12 13:46:21 -0400 | [diff] [blame] | 20 | #include <cstring> |
| 21 | #include <memory> |
| 22 | #include <utility> |
| 23 | #include <vector> |
| 24 | |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 25 | static SkImageInfo standardize_info(SkCodec* codec) { |
| 26 | SkImageInfo defaultInfo = codec->getInfo(); |
| 27 | // Note: This drops the SkColorSpace, allowing the equality check between two |
| 28 | // different codecs created from the same file to have the same SkImageInfo. |
| 29 | return SkImageInfo::MakeN32Premul(defaultInfo.width(), defaultInfo.height()); |
| 30 | } |
| 31 | |
| 32 | static bool create_truth(sk_sp<SkData> data, SkBitmap* dst) { |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 33 | std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(std::move(data))); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 34 | if (!codec) { |
| 35 | return false; |
| 36 | } |
| 37 | |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 38 | const SkImageInfo info = standardize_info(codec.get()); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 39 | dst->allocPixels(info); |
| 40 | return SkCodec::kSuccess == codec->getPixels(info, dst->getPixels(), dst->rowBytes()); |
| 41 | } |
| 42 | |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 43 | static void compare_bitmaps(skiatest::Reporter* r, const SkBitmap& bm1, const SkBitmap& bm2) { |
| 44 | const SkImageInfo& info = bm1.info(); |
| 45 | if (info != bm2.info()) { |
| 46 | ERRORF(r, "Bitmaps have different image infos!"); |
| 47 | return; |
| 48 | } |
| 49 | const size_t rowBytes = info.minRowBytes(); |
| 50 | for (int i = 0; i < info.height(); i++) { |
nagarajan.n | 0ec0bf0 | 2017-10-11 10:41:27 +0530 | [diff] [blame] | 51 | if (memcmp(bm1.getAddr(0, i), bm2.getAddr(0, i), rowBytes)) { |
| 52 | ERRORF(r, "Bitmaps have different pixels, starting on line %i!", i); |
| 53 | return; |
| 54 | } |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 55 | } |
| 56 | } |
| 57 | |
Leon Scroggins III | 4993b95 | 2016-12-08 11:54:04 -0500 | [diff] [blame] | 58 | static void test_partial(skiatest::Reporter* r, const char* name, size_t minBytes = 0) { |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 59 | sk_sp<SkData> file = GetResourceAsData(name); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 60 | if (!file) { |
| 61 | SkDebugf("missing resource %s\n", name); |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | SkBitmap truth; |
| 66 | if (!create_truth(file, &truth)) { |
| 67 | ERRORF(r, "Failed to decode %s\n", name); |
| 68 | return; |
| 69 | } |
| 70 | |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 71 | // Now decode part of the file |
Leon Scroggins III | 4993b95 | 2016-12-08 11:54:04 -0500 | [diff] [blame] | 72 | HaltingStream* stream = new HaltingStream(file, SkTMax(file->size() / 2, minBytes)); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 73 | |
| 74 | // Note that we cheat and hold on to a pointer to stream, though it is owned by |
| 75 | // partialCodec. |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 76 | std::unique_ptr<SkCodec> partialCodec(SkCodec::MakeFromStream(std::unique_ptr<SkStream>(stream))); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 77 | if (!partialCodec) { |
| 78 | // Technically, this could be a small file where half the file is not |
| 79 | // enough. |
| 80 | ERRORF(r, "Failed to create codec for %s", name); |
| 81 | return; |
| 82 | } |
| 83 | |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 84 | const SkImageInfo info = standardize_info(partialCodec.get()); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 85 | SkASSERT(info == truth.info()); |
| 86 | SkBitmap incremental; |
| 87 | incremental.allocPixels(info); |
| 88 | |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 89 | while (true) { |
| 90 | const SkCodec::Result startResult = partialCodec->startIncrementalDecode(info, |
| 91 | incremental.getPixels(), incremental.rowBytes()); |
| 92 | if (startResult == SkCodec::kSuccess) { |
| 93 | break; |
| 94 | } |
| 95 | |
| 96 | if (stream->isAllDataReceived()) { |
| 97 | ERRORF(r, "Failed to start incremental decode\n"); |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | // Append some data. The size is arbitrary, but deliberately different from |
| 102 | // the buffer size used by SkPngCodec. |
| 103 | stream->addNewData(1000); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | while (true) { |
| 107 | const SkCodec::Result result = partialCodec->incrementalDecode(); |
| 108 | |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 109 | if (result == SkCodec::kSuccess) { |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 110 | break; |
| 111 | } |
| 112 | |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 113 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 114 | |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 115 | if (stream->isAllDataReceived()) { |
| 116 | ERRORF(r, "Failed to completely decode %s", name); |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | // Append some data. The size is arbitrary, but deliberately different from |
| 121 | // the buffer size used by SkPngCodec. |
| 122 | stream->addNewData(1000); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | // compare to original |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 126 | compare_bitmaps(r, truth, incremental); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | DEF_TEST(Codec_partial, r) { |
Leon Scroggins III | 8323965 | 2017-04-21 13:47:12 -0400 | [diff] [blame] | 130 | #if 0 |
| 131 | // FIXME (scroggo): SkPngCodec needs to use SkStreamBuffer in order to |
| 132 | // support incremental decoding. |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 133 | test_partial(r, "images/plane.png"); |
| 134 | test_partial(r, "images/plane_interlaced.png"); |
| 135 | test_partial(r, "images/yellow_rose.png"); |
| 136 | test_partial(r, "images/index8.png"); |
| 137 | test_partial(r, "images/color_wheel.png"); |
| 138 | test_partial(r, "images/mandrill_256.png"); |
| 139 | test_partial(r, "images/mandrill_32.png"); |
| 140 | test_partial(r, "images/arrow.png"); |
| 141 | test_partial(r, "images/randPixels.png"); |
| 142 | test_partial(r, "images/baby_tux.png"); |
Leon Scroggins III | 8323965 | 2017-04-21 13:47:12 -0400 | [diff] [blame] | 143 | #endif |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 144 | test_partial(r, "images/box.gif"); |
| 145 | test_partial(r, "images/randPixels.gif", 215); |
| 146 | test_partial(r, "images/color_wheel.gif"); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 149 | // Verify that when decoding an animated gif byte by byte we report the correct |
| 150 | // fRequiredFrame as soon as getFrameInfo reports the frame. |
| 151 | DEF_TEST(Codec_requiredFrame, r) { |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 152 | auto path = "images/colorTables.gif"; |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 153 | sk_sp<SkData> file = GetResourceAsData(path); |
| 154 | if (!file) { |
| 155 | return; |
| 156 | } |
| 157 | |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 158 | std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(file)); |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 159 | if (!codec) { |
| 160 | ERRORF(r, "Failed to create codec from %s", path); |
| 161 | return; |
| 162 | } |
| 163 | |
| 164 | auto frameInfo = codec->getFrameInfo(); |
| 165 | if (frameInfo.size() <= 1) { |
| 166 | ERRORF(r, "Test is uninteresting with 0 or 1 frames"); |
| 167 | return; |
| 168 | } |
| 169 | |
| 170 | HaltingStream* stream(nullptr); |
| 171 | std::unique_ptr<SkCodec> partialCodec(nullptr); |
| 172 | for (size_t i = 0; !partialCodec; i++) { |
| 173 | if (file->size() == i) { |
| 174 | ERRORF(r, "Should have created a partial codec for %s", path); |
| 175 | return; |
| 176 | } |
| 177 | stream = new HaltingStream(file, i); |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 178 | partialCodec = SkCodec::MakeFromStream(std::unique_ptr<SkStream>(stream)); |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | std::vector<SkCodec::FrameInfo> partialInfo; |
| 182 | size_t frameToCompare = 0; |
Nigel Tao | afea9c3 | 2018-08-01 15:00:32 +1000 | [diff] [blame] | 183 | while (true) { |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 184 | partialInfo = partialCodec->getFrameInfo(); |
| 185 | for (; frameToCompare < partialInfo.size(); frameToCompare++) { |
| 186 | REPORTER_ASSERT(r, partialInfo[frameToCompare].fRequiredFrame |
| 187 | == frameInfo[frameToCompare].fRequiredFrame); |
| 188 | } |
| 189 | |
| 190 | if (frameToCompare == frameInfo.size()) { |
| 191 | break; |
| 192 | } |
Nigel Tao | afea9c3 | 2018-08-01 15:00:32 +1000 | [diff] [blame] | 193 | |
| 194 | if (stream->getLength() == file->size()) { |
| 195 | ERRORF(r, "Should have found all frames for %s", path); |
| 196 | return; |
| 197 | } |
| 198 | stream->addNewData(1); |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 199 | } |
| 200 | } |
| 201 | |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 202 | DEF_TEST(Codec_partialAnim, r) { |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 203 | auto path = "images/test640x479.gif"; |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 204 | sk_sp<SkData> file = GetResourceAsData(path); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 205 | if (!file) { |
| 206 | return; |
| 207 | } |
| 208 | |
| 209 | // This stream will be owned by fullCodec, but we hang on to the pointer |
| 210 | // to determine frame offsets. |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 211 | std::unique_ptr<SkCodec> fullCodec(SkCodec::MakeFromStream(skstd::make_unique<SkMemoryStream>(file))); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 212 | const auto info = standardize_info(fullCodec.get()); |
| 213 | |
| 214 | // frameByteCounts stores the number of bytes to decode a particular frame. |
| 215 | // - [0] is the number of bytes for the header |
| 216 | // - frames[i] requires frameByteCounts[i+1] bytes to decode |
Leon Scroggins III | 1f6af6b | 2017-06-12 16:41:09 -0400 | [diff] [blame] | 217 | const std::vector<size_t> frameByteCounts = { 455, 69350, 1344, 1346, 1327 }; |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 218 | std::vector<SkBitmap> frames; |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 219 | for (size_t i = 0; true; i++) { |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 220 | SkBitmap frame; |
| 221 | frame.allocPixels(info); |
| 222 | |
| 223 | SkCodec::Options opts; |
| 224 | opts.fFrameIndex = i; |
| 225 | const SkCodec::Result result = fullCodec->getPixels(info, frame.getPixels(), |
Leon Scroggins | 571b30f | 2017-07-11 17:35:31 +0000 | [diff] [blame] | 226 | frame.rowBytes(), &opts); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 227 | |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 228 | if (result == SkCodec::kIncompleteInput || result == SkCodec::kInvalidInput) { |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 229 | // We need to distinguish between a partial frame and no more frames. |
| 230 | // getFrameInfo lets us do this, since it tells the number of frames |
| 231 | // not considering whether they are complete. |
| 232 | // FIXME: Should we use a different Result? |
| 233 | if (fullCodec->getFrameInfo().size() > i) { |
| 234 | // This is a partial frame. |
| 235 | frames.push_back(frame); |
| 236 | } |
| 237 | break; |
| 238 | } |
| 239 | |
| 240 | if (result != SkCodec::kSuccess) { |
| 241 | ERRORF(r, "Failed to decode frame %i from %s", i, path); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | frames.push_back(frame); |
| 246 | } |
| 247 | |
| 248 | // Now decode frames partially, then completely, and compare to the original. |
| 249 | HaltingStream* haltingStream = new HaltingStream(file, frameByteCounts[0]); |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 250 | std::unique_ptr<SkCodec> partialCodec(SkCodec::MakeFromStream( |
| 251 | std::unique_ptr<SkStream>(haltingStream))); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 252 | if (!partialCodec) { |
| 253 | ERRORF(r, "Failed to create a partial codec from %s with %i bytes out of %i", |
| 254 | path, frameByteCounts[0], file->size()); |
| 255 | return; |
| 256 | } |
| 257 | |
| 258 | SkASSERT(frameByteCounts.size() > frames.size()); |
| 259 | for (size_t i = 0; i < frames.size(); i++) { |
| 260 | const size_t fullFrameBytes = frameByteCounts[i + 1]; |
| 261 | const size_t firstHalf = fullFrameBytes / 2; |
| 262 | const size_t secondHalf = fullFrameBytes - firstHalf; |
| 263 | |
| 264 | haltingStream->addNewData(firstHalf); |
Leon Scroggins III | 3639faa | 2016-12-08 11:38:58 -0500 | [diff] [blame] | 265 | auto frameInfo = partialCodec->getFrameInfo(); |
| 266 | REPORTER_ASSERT(r, frameInfo.size() == i + 1); |
| 267 | REPORTER_ASSERT(r, !frameInfo[i].fFullyReceived); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 268 | |
| 269 | SkBitmap frame; |
| 270 | frame.allocPixels(info); |
| 271 | |
| 272 | SkCodec::Options opts; |
| 273 | opts.fFrameIndex = i; |
| 274 | SkCodec::Result result = partialCodec->startIncrementalDecode(info, |
| 275 | frame.getPixels(), frame.rowBytes(), &opts); |
| 276 | if (result != SkCodec::kSuccess) { |
| 277 | ERRORF(r, "Failed to start incremental decode for %s on frame %i", |
| 278 | path, i); |
| 279 | return; |
| 280 | } |
| 281 | |
| 282 | result = partialCodec->incrementalDecode(); |
| 283 | REPORTER_ASSERT(r, SkCodec::kIncompleteInput == result); |
| 284 | |
| 285 | haltingStream->addNewData(secondHalf); |
| 286 | result = partialCodec->incrementalDecode(); |
| 287 | REPORTER_ASSERT(r, SkCodec::kSuccess == result); |
| 288 | |
Leon Scroggins III | 3639faa | 2016-12-08 11:38:58 -0500 | [diff] [blame] | 289 | frameInfo = partialCodec->getFrameInfo(); |
| 290 | REPORTER_ASSERT(r, frameInfo.size() == i + 1); |
| 291 | REPORTER_ASSERT(r, frameInfo[i].fFullyReceived); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 292 | compare_bitmaps(r, frames[i], frame); |
| 293 | } |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | // Test that calling getPixels when an incremental decode has been |
| 297 | // started (but not finished) makes the next call to incrementalDecode |
| 298 | // require a call to startIncrementalDecode. |
| 299 | static void test_interleaved(skiatest::Reporter* r, const char* name) { |
Leon Scroggins III | e4ba105 | 2017-01-30 13:55:14 -0500 | [diff] [blame] | 300 | sk_sp<SkData> file = GetResourceAsData(name); |
scroggo | 19b9153 | 2016-10-24 09:03:26 -0700 | [diff] [blame] | 301 | if (!file) { |
| 302 | return; |
| 303 | } |
| 304 | const size_t halfSize = file->size() / 2; |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 305 | std::unique_ptr<SkCodec> partialCodec(SkCodec::MakeFromStream( |
| 306 | skstd::make_unique<HaltingStream>(std::move(file), halfSize))); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 307 | if (!partialCodec) { |
| 308 | ERRORF(r, "Failed to create codec for %s", name); |
| 309 | return; |
| 310 | } |
| 311 | |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 312 | const SkImageInfo info = standardize_info(partialCodec.get()); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 313 | SkBitmap incremental; |
| 314 | incremental.allocPixels(info); |
| 315 | |
| 316 | const SkCodec::Result startResult = partialCodec->startIncrementalDecode(info, |
| 317 | incremental.getPixels(), incremental.rowBytes()); |
| 318 | if (startResult != SkCodec::kSuccess) { |
| 319 | ERRORF(r, "Failed to start incremental decode\n"); |
| 320 | return; |
| 321 | } |
| 322 | |
| 323 | SkCodec::Result result = partialCodec->incrementalDecode(); |
| 324 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 325 | |
| 326 | SkBitmap full; |
| 327 | full.allocPixels(info); |
| 328 | result = partialCodec->getPixels(info, full.getPixels(), full.rowBytes()); |
| 329 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 330 | |
| 331 | // Now incremental decode will fail |
| 332 | result = partialCodec->incrementalDecode(); |
| 333 | REPORTER_ASSERT(r, result == SkCodec::kInvalidParameters); |
| 334 | } |
| 335 | |
| 336 | DEF_TEST(Codec_rewind, r) { |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 337 | test_interleaved(r, "images/plane.png"); |
| 338 | test_interleaved(r, "images/plane_interlaced.png"); |
| 339 | test_interleaved(r, "images/box.gif"); |
scroggo | 8e6c7ad | 2016-09-16 08:20:38 -0700 | [diff] [blame] | 340 | } |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 341 | |
| 342 | // Modified version of the giflib logo, from |
| 343 | // http://giflib.sourceforge.net/whatsinagif/bits_and_bytes.html |
| 344 | // The global color map has been replaced with a local color map. |
| 345 | static unsigned char gNoGlobalColorMap[] = { |
| 346 | // Header |
| 347 | 0x47, 0x49, 0x46, 0x38, 0x39, 0x61, |
| 348 | |
| 349 | // Logical screen descriptor |
| 350 | 0x0A, 0x00, 0x0A, 0x00, 0x11, 0x00, 0x00, |
| 351 | |
| 352 | // Image descriptor |
| 353 | 0x2C, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x0A, 0x00, 0x81, |
| 354 | |
| 355 | // Local color table |
| 356 | 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, |
| 357 | |
| 358 | // Image data |
| 359 | 0x02, 0x16, 0x8C, 0x2D, 0x99, 0x87, 0x2A, 0x1C, 0xDC, 0x33, 0xA0, 0x02, 0x75, |
| 360 | 0xEC, 0x95, 0xFA, 0xA8, 0xDE, 0x60, 0x8C, 0x04, 0x91, 0x4C, 0x01, 0x00, |
| 361 | |
| 362 | // Trailer |
| 363 | 0x3B, |
| 364 | }; |
| 365 | |
| 366 | // Test that a gif file truncated before its local color map behaves as expected. |
| 367 | DEF_TEST(Codec_GifPreMap, r) { |
| 368 | sk_sp<SkData> data = SkData::MakeWithoutCopy(gNoGlobalColorMap, sizeof(gNoGlobalColorMap)); |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 369 | std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(data)); |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 370 | if (!codec) { |
| 371 | ERRORF(r, "failed to create codec"); |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | SkBitmap truth; |
| 376 | auto info = standardize_info(codec.get()); |
| 377 | truth.allocPixels(info); |
| 378 | |
| 379 | auto result = codec->getPixels(info, truth.getPixels(), truth.rowBytes()); |
| 380 | REPORTER_ASSERT(r, result == SkCodec::kSuccess); |
| 381 | |
| 382 | // Truncate to 23 bytes, just before the color map. This should fail to decode. |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 383 | // |
| 384 | // See also Codec_GifTruncated2 in GifTest.cpp for this magic 23. |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 385 | codec = SkCodec::MakeFromData(SkData::MakeWithoutCopy(gNoGlobalColorMap, 23)); |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 386 | REPORTER_ASSERT(r, codec); |
| 387 | if (codec) { |
| 388 | SkBitmap bm; |
| 389 | bm.allocPixels(info); |
| 390 | result = codec->getPixels(info, bm.getPixels(), bm.rowBytes()); |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 391 | |
| 392 | // See the comments in Codec_GifTruncated2. |
| 393 | #ifdef SK_HAS_WUFFS_LIBRARY |
| 394 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 395 | #else |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 396 | REPORTER_ASSERT(r, result == SkCodec::kInvalidInput); |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 397 | #endif |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | // Again, truncate to 23 bytes, this time for an incremental decode. We |
| 401 | // cannot start an incremental decode until we have more data. If we did, |
| 402 | // we would be using the wrong color table. |
| 403 | HaltingStream* stream = new HaltingStream(data, 23); |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 404 | codec = SkCodec::MakeFromStream(std::unique_ptr<SkStream>(stream)); |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 405 | REPORTER_ASSERT(r, codec); |
| 406 | if (codec) { |
| 407 | SkBitmap bm; |
| 408 | bm.allocPixels(info); |
| 409 | result = codec->startIncrementalDecode(info, bm.getPixels(), bm.rowBytes()); |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 410 | |
| 411 | // See the comments in Codec_GifTruncated2. |
| 412 | #ifdef SK_HAS_WUFFS_LIBRARY |
| 413 | REPORTER_ASSERT(r, result == SkCodec::kSuccess); |
| 414 | |
| 415 | // Note that this is incrementalDecode, not startIncrementalDecode. |
| 416 | result = codec->incrementalDecode(); |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 417 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 418 | |
| 419 | stream->addNewData(data->size()); |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 420 | #else |
| 421 | REPORTER_ASSERT(r, result == SkCodec::kIncompleteInput); |
| 422 | |
| 423 | // Note that this is startIncrementalDecode, not incrementalDecode. |
| 424 | stream->addNewData(data->size()); |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 425 | result = codec->startIncrementalDecode(info, bm.getPixels(), bm.rowBytes()); |
| 426 | REPORTER_ASSERT(r, result == SkCodec::kSuccess); |
Leon Scroggins III | e93ec68 | 2018-10-26 09:25:51 -0400 | [diff] [blame^] | 427 | #endif |
Leon Scroggins III | 3fc97d7 | 2016-12-09 16:39:33 -0500 | [diff] [blame] | 428 | |
| 429 | result = codec->incrementalDecode(); |
| 430 | REPORTER_ASSERT(r, result == SkCodec::kSuccess); |
| 431 | compare_bitmaps(r, truth, bm); |
| 432 | } |
| 433 | } |
Leon Scroggins III | b644650 | 2017-04-24 09:32:50 -0400 | [diff] [blame] | 434 | |
| 435 | DEF_TEST(Codec_emptyIDAT, r) { |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 436 | const char* name = "images/baby_tux.png"; |
Leon Scroggins III | b644650 | 2017-04-24 09:32:50 -0400 | [diff] [blame] | 437 | sk_sp<SkData> file = GetResourceAsData(name); |
| 438 | if (!file) { |
Leon Scroggins III | b644650 | 2017-04-24 09:32:50 -0400 | [diff] [blame] | 439 | return; |
| 440 | } |
| 441 | |
| 442 | // Truncate to the beginning of the IDAT, immediately after the IDAT tag. |
| 443 | file = SkData::MakeSubset(file.get(), 0, 80); |
| 444 | |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 445 | std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(std::move(file))); |
Leon Scroggins III | b644650 | 2017-04-24 09:32:50 -0400 | [diff] [blame] | 446 | if (!codec) { |
| 447 | ERRORF(r, "Failed to create a codec for %s", name); |
| 448 | return; |
| 449 | } |
| 450 | |
| 451 | SkBitmap bm; |
| 452 | const auto info = standardize_info(codec.get()); |
| 453 | bm.allocPixels(info); |
| 454 | |
| 455 | const auto result = codec->getPixels(info, bm.getPixels(), bm.rowBytes()); |
| 456 | REPORTER_ASSERT(r, SkCodec::kIncompleteInput == result); |
| 457 | } |
Leon Scroggins III | 588fb04 | 2017-07-14 16:32:31 -0400 | [diff] [blame] | 458 | |
| 459 | DEF_TEST(Codec_incomplete, r) { |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 460 | for (const char* name : { "images/baby_tux.png", |
| 461 | "images/baby_tux.webp", |
| 462 | "images/CMYK.jpg", |
| 463 | "images/color_wheel.gif", |
| 464 | "images/google_chrome.ico", |
| 465 | "images/rle.bmp", |
| 466 | "images/mandrill.wbmp", |
Leon Scroggins III | 588fb04 | 2017-07-14 16:32:31 -0400 | [diff] [blame] | 467 | }) { |
| 468 | sk_sp<SkData> file = GetResourceAsData(name); |
Bruce Wang | 61f36d3 | 2018-05-29 17:29:24 -0400 | [diff] [blame] | 469 | if (!file) { |
Leon Scroggins III | 588fb04 | 2017-07-14 16:32:31 -0400 | [diff] [blame] | 470 | continue; |
| 471 | } |
| 472 | |
| 473 | for (size_t len = 14; len <= file->size(); len += 5) { |
| 474 | SkCodec::Result result; |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 475 | std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream( |
| 476 | skstd::make_unique<SkMemoryStream>(file->data(), len), &result)); |
Leon Scroggins III | 588fb04 | 2017-07-14 16:32:31 -0400 | [diff] [blame] | 477 | if (codec) { |
| 478 | if (result != SkCodec::kSuccess) { |
| 479 | ERRORF(r, "Created an SkCodec for %s with %lu bytes, but " |
| 480 | "reported an error %i", name, len, result); |
| 481 | } |
| 482 | break; |
| 483 | } |
| 484 | |
| 485 | if (SkCodec::kIncompleteInput != result) { |
| 486 | ERRORF(r, "Reported error %i for %s with %lu bytes", |
| 487 | result, name, len); |
| 488 | break; |
| 489 | } |
| 490 | } |
| 491 | } |
| 492 | } |