| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "Resources.h" |
| #include "SkAndroidCodec.h" |
| #include "SkBitmap.h" |
| #include "SkCodec.h" |
| #include "SkCodecImageGenerator.h" |
| #include "SkData.h" |
| #include "SkFrontBufferedStream.h" |
| #include "SkMD5.h" |
| #include "SkRandom.h" |
| #include "SkStream.h" |
| #include "SkStreamPriv.h" |
| #include "SkPngChunkReader.h" |
| #include "Test.h" |
| |
| #include "png.h" |
| |
| static SkStreamAsset* resource(const char path[]) { |
| SkString fullPath = GetResourcePath(path); |
| return SkStream::NewFromFile(fullPath.c_str()); |
| } |
| |
| static void md5(const SkBitmap& bm, SkMD5::Digest* digest) { |
| SkAutoLockPixels autoLockPixels(bm); |
| SkASSERT(bm.getPixels()); |
| SkMD5 md5; |
| size_t rowLen = bm.info().bytesPerPixel() * bm.width(); |
| for (int y = 0; y < bm.height(); ++y) { |
| md5.write(bm.getAddr(0, y), rowLen); |
| } |
| md5.finish(*digest); |
| } |
| |
| /** |
| * Compute the digest for bm and compare it to a known good digest. |
| * @param r Reporter to assert that bm's digest matches goodDigest. |
| * @param goodDigest The known good digest to compare to. |
| * @param bm The bitmap to test. |
| */ |
| static void compare_to_good_digest(skiatest::Reporter* r, const SkMD5::Digest& goodDigest, |
| const SkBitmap& bm) { |
| SkMD5::Digest digest; |
| md5(bm, &digest); |
| REPORTER_ASSERT(r, digest == goodDigest); |
| } |
| |
| /** |
| * Test decoding an SkCodec to a particular SkImageInfo. |
| * |
| * Calling getPixels(info) should return expectedResult, and if goodDigest is non nullptr, |
| * the resulting decode should match. |
| */ |
| template<typename Codec> |
| static void test_info(skiatest::Reporter* r, Codec* codec, const SkImageInfo& info, |
| SkCodec::Result expectedResult, const SkMD5::Digest* goodDigest) { |
| SkBitmap bm; |
| bm.allocPixels(info); |
| SkAutoLockPixels autoLockPixels(bm); |
| |
| SkCodec::Result result = codec->getPixels(info, bm.getPixels(), bm.rowBytes()); |
| REPORTER_ASSERT(r, result == expectedResult); |
| |
| if (goodDigest) { |
| compare_to_good_digest(r, *goodDigest, bm); |
| } |
| } |
| |
| SkIRect generate_random_subset(SkRandom* rand, int w, int h) { |
| SkIRect rect; |
| do { |
| rect.fLeft = rand->nextRangeU(0, w); |
| rect.fTop = rand->nextRangeU(0, h); |
| rect.fRight = rand->nextRangeU(0, w); |
| rect.fBottom = rand->nextRangeU(0, h); |
| rect.sort(); |
| } while (rect.isEmpty()); |
| return rect; |
| } |
| |
| static void test_incremental_decode(skiatest::Reporter* r, SkCodec* codec, const SkImageInfo& info, |
| const SkMD5::Digest& goodDigest) { |
| SkBitmap bm; |
| bm.allocPixels(info); |
| SkAutoLockPixels autoLockPixels(bm); |
| |
| REPORTER_ASSERT(r, SkCodec::kSuccess == codec->startIncrementalDecode(info, bm.getPixels(), |
| bm.rowBytes())); |
| |
| REPORTER_ASSERT(r, SkCodec::kSuccess == codec->incrementalDecode()); |
| |
| compare_to_good_digest(r, goodDigest, bm); |
| } |
| |
| // Test in stripes, similar to DM's kStripe_Mode |
| static void test_in_stripes(skiatest::Reporter* r, SkCodec* codec, const SkImageInfo& info, |
| const SkMD5::Digest& goodDigest) { |
| SkBitmap bm; |
| bm.allocPixels(info); |
| bm.eraseColor(SK_ColorYELLOW); |
| |
| const int height = info.height(); |
| // Note that if numStripes does not evenly divide height there will be an extra |
| // stripe. |
| const int numStripes = 4; |
| |
| if (numStripes > height) { |
| // Image is too small. |
| return; |
| } |
| |
| const int stripeHeight = height / numStripes; |
| |
| // Iterate through the image twice. Once to decode odd stripes, and once for even. |
| for (int oddEven = 1; oddEven >= 0; oddEven--) { |
| for (int y = oddEven * stripeHeight; y < height; y += 2 * stripeHeight) { |
| SkIRect subset = SkIRect::MakeLTRB(0, y, info.width(), |
| SkTMin(y + stripeHeight, height)); |
| SkCodec::Options options; |
| options.fSubset = ⊂ |
| if (SkCodec::kSuccess != codec->startIncrementalDecode(info, bm.getAddr(0, y), |
| bm.rowBytes(), &options)) { |
| ERRORF(r, "failed to start incremental decode!\ttop: %i\tbottom%i\n", |
| subset.top(), subset.bottom()); |
| return; |
| } |
| if (SkCodec::kSuccess != codec->incrementalDecode()) { |
| ERRORF(r, "failed incremental decode starting from line %i\n", y); |
| return; |
| } |
| } |
| } |
| |
| compare_to_good_digest(r, goodDigest, bm); |
| } |
| |
| template<typename Codec> |
| static void test_codec(skiatest::Reporter* r, Codec* codec, SkBitmap& bm, const SkImageInfo& info, |
| const SkISize& size, SkCodec::Result expectedResult, SkMD5::Digest* digest, |
| const SkMD5::Digest* goodDigest) { |
| |
| REPORTER_ASSERT(r, info.dimensions() == size); |
| bm.allocPixels(info); |
| SkAutoLockPixels autoLockPixels(bm); |
| |
| SkCodec::Result result = codec->getPixels(info, bm.getPixels(), bm.rowBytes()); |
| REPORTER_ASSERT(r, result == expectedResult); |
| |
| md5(bm, digest); |
| if (goodDigest) { |
| REPORTER_ASSERT(r, *digest == *goodDigest); |
| } |
| |
| { |
| // Test decoding to 565 |
| SkImageInfo info565 = info.makeColorType(kRGB_565_SkColorType); |
| if (info.alphaType() == kOpaque_SkAlphaType) { |
| // Decoding to 565 should succeed. |
| SkBitmap bm565; |
| bm565.allocPixels(info565); |
| SkAutoLockPixels alp(bm565); |
| |
| // This will allow comparison even if the image is incomplete. |
| bm565.eraseColor(SK_ColorBLACK); |
| |
| REPORTER_ASSERT(r, expectedResult == codec->getPixels(info565, |
| bm565.getPixels(), bm565.rowBytes())); |
| |
| SkMD5::Digest digest565; |
| md5(bm565, &digest565); |
| |
| // A dumb client's request for non-opaque should also succeed. |
| for (auto alpha : { kPremul_SkAlphaType, kUnpremul_SkAlphaType }) { |
| info565 = info565.makeAlphaType(alpha); |
| test_info(r, codec, info565, expectedResult, &digest565); |
| } |
| } else { |
| test_info(r, codec, info565, SkCodec::kInvalidConversion, nullptr); |
| } |
| } |
| |
| if (codec->getInfo().colorType() == kGray_8_SkColorType) { |
| SkImageInfo grayInfo = codec->getInfo(); |
| SkBitmap grayBm; |
| grayBm.allocPixels(grayInfo); |
| SkAutoLockPixels alp(grayBm); |
| |
| grayBm.eraseColor(SK_ColorBLACK); |
| |
| REPORTER_ASSERT(r, expectedResult == codec->getPixels(grayInfo, |
| grayBm.getPixels(), grayBm.rowBytes())); |
| |
| SkMD5::Digest grayDigest; |
| md5(grayBm, &grayDigest); |
| |
| for (auto alpha : { kPremul_SkAlphaType, kUnpremul_SkAlphaType }) { |
| grayInfo = grayInfo.makeAlphaType(alpha); |
| test_info(r, codec, grayInfo, expectedResult, &grayDigest); |
| } |
| } |
| |
| // Verify that re-decoding gives the same result. It is interesting to check this after |
| // a decode to 565, since choosing to decode to 565 may result in some of the decode |
| // options being modified. These options should return to their defaults on another |
| // decode to kN32, so the new digest should match the old digest. |
| test_info(r, codec, info, expectedResult, digest); |
| |
| { |
| // Check alpha type conversions |
| if (info.alphaType() == kOpaque_SkAlphaType) { |
| test_info(r, codec, info.makeAlphaType(kUnpremul_SkAlphaType), |
| expectedResult, digest); |
| test_info(r, codec, info.makeAlphaType(kPremul_SkAlphaType), |
| expectedResult, digest); |
| } else { |
| // Decoding to opaque should fail |
| test_info(r, codec, info.makeAlphaType(kOpaque_SkAlphaType), |
| SkCodec::kInvalidConversion, nullptr); |
| SkAlphaType otherAt = info.alphaType(); |
| if (kPremul_SkAlphaType == otherAt) { |
| otherAt = kUnpremul_SkAlphaType; |
| } else { |
| otherAt = kPremul_SkAlphaType; |
| } |
| // The other non-opaque alpha type should always succeed, but not match. |
| test_info(r, codec, info.makeAlphaType(otherAt), expectedResult, nullptr); |
| } |
| } |
| } |
| |
| static bool supports_partial_scanlines(const char path[]) { |
| static const char* const exts[] = { |
| "jpg", "jpeg", "png", "webp" |
| "JPG", "JPEG", "PNG", "WEBP" |
| }; |
| |
| for (uint32_t i = 0; i < SK_ARRAY_COUNT(exts); i++) { |
| if (SkStrEndsWith(path, exts[i])) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // FIXME: Break up this giant function |
| static void check(skiatest::Reporter* r, |
| const char path[], |
| SkISize size, |
| bool supportsScanlineDecoding, |
| bool supportsSubsetDecoding, |
| bool supportsIncomplete, |
| bool supportsNewScanlineDecoding = false) { |
| |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| |
| SkAutoTDelete<SkCodec> codec(nullptr); |
| bool isIncomplete = supportsIncomplete; |
| if (isIncomplete) { |
| size_t size = stream->getLength(); |
| SkAutoTUnref<SkData> data((SkData::NewFromStream(stream, 2 * size / 3))); |
| codec.reset(SkCodec::NewFromData(data)); |
| } else { |
| codec.reset(SkCodec::NewFromStream(stream.release())); |
| } |
| if (!codec) { |
| ERRORF(r, "Unable to decode '%s'", path); |
| return; |
| } |
| |
| // Test full image decodes with SkCodec |
| SkMD5::Digest codecDigest; |
| const SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType); |
| SkBitmap bm; |
| SkCodec::Result expectedResult = isIncomplete ? SkCodec::kIncompleteInput : SkCodec::kSuccess; |
| test_codec(r, codec.get(), bm, info, size, expectedResult, &codecDigest, nullptr); |
| |
| // Scanline decoding follows. |
| |
| if (supportsNewScanlineDecoding && !isIncomplete) { |
| test_incremental_decode(r, codec, info, codecDigest); |
| test_in_stripes(r, codec, info, codecDigest); |
| } |
| |
| // Need to call startScanlineDecode() first. |
| REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0) == 0); |
| REPORTER_ASSERT(r, !codec->skipScanlines(1)); |
| const SkCodec::Result startResult = codec->startScanlineDecode(info); |
| if (supportsScanlineDecoding) { |
| bm.eraseColor(SK_ColorYELLOW); |
| |
| REPORTER_ASSERT(r, startResult == SkCodec::kSuccess); |
| |
| for (int y = 0; y < info.height(); y++) { |
| const int lines = codec->getScanlines(bm.getAddr(0, y), 1, 0); |
| if (!isIncomplete) { |
| REPORTER_ASSERT(r, 1 == lines); |
| } |
| } |
| // verify that scanline decoding gives the same result. |
| if (SkCodec::kTopDown_SkScanlineOrder == codec->getScanlineOrder()) { |
| compare_to_good_digest(r, codecDigest, bm); |
| } |
| |
| // Cannot continue to decode scanlines beyond the end |
| REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0) |
| == 0); |
| |
| // Interrupting a scanline decode with a full decode starts from |
| // scratch |
| REPORTER_ASSERT(r, codec->startScanlineDecode(info) == SkCodec::kSuccess); |
| const int lines = codec->getScanlines(bm.getAddr(0, 0), 1, 0); |
| if (!isIncomplete) { |
| REPORTER_ASSERT(r, lines == 1); |
| } |
| REPORTER_ASSERT(r, codec->getPixels(bm.info(), bm.getPixels(), bm.rowBytes()) |
| == expectedResult); |
| REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0) |
| == 0); |
| REPORTER_ASSERT(r, codec->skipScanlines(1) |
| == 0); |
| |
| // Test partial scanline decodes |
| if (supports_partial_scanlines(path) && info.width() >= 3) { |
| SkCodec::Options options; |
| int width = info.width(); |
| int height = info.height(); |
| SkIRect subset = SkIRect::MakeXYWH(2 * (width / 3), 0, width / 3, height); |
| options.fSubset = ⊂ |
| |
| const SkCodec::Result partialStartResult = codec->startScanlineDecode(info, &options, |
| nullptr, nullptr); |
| REPORTER_ASSERT(r, partialStartResult == SkCodec::kSuccess); |
| |
| for (int y = 0; y < height; y++) { |
| const int lines = codec->getScanlines(bm.getAddr(0, y), 1, 0); |
| if (!isIncomplete) { |
| REPORTER_ASSERT(r, 1 == lines); |
| } |
| } |
| } |
| } else { |
| REPORTER_ASSERT(r, startResult == SkCodec::kUnimplemented); |
| } |
| |
| // The rest of this function tests decoding subsets, and will decode an arbitrary number of |
| // random subsets. |
| // Do not attempt to decode subsets of an image of only once pixel, since there is no |
| // meaningful subset. |
| if (size.width() * size.height() == 1) { |
| return; |
| } |
| |
| SkRandom rand; |
| SkIRect subset; |
| SkCodec::Options opts; |
| opts.fSubset = ⊂ |
| for (int i = 0; i < 5; i++) { |
| subset = generate_random_subset(&rand, size.width(), size.height()); |
| SkASSERT(!subset.isEmpty()); |
| const bool supported = codec->getValidSubset(&subset); |
| REPORTER_ASSERT(r, supported == supportsSubsetDecoding); |
| |
| SkImageInfo subsetInfo = info.makeWH(subset.width(), subset.height()); |
| SkBitmap bm; |
| bm.allocPixels(subsetInfo); |
| const SkCodec::Result result = codec->getPixels(bm.info(), bm.getPixels(), bm.rowBytes(), |
| &opts, nullptr, nullptr); |
| |
| if (supportsSubsetDecoding) { |
| REPORTER_ASSERT(r, result == expectedResult); |
| // Webp is the only codec that supports subsets, and it will have modified the subset |
| // to have even left/top. |
| REPORTER_ASSERT(r, SkIsAlign2(subset.fLeft) && SkIsAlign2(subset.fTop)); |
| } else { |
| // No subsets will work. |
| REPORTER_ASSERT(r, result == SkCodec::kUnimplemented); |
| } |
| } |
| |
| // SkAndroidCodec tests |
| if (supportsScanlineDecoding || supportsSubsetDecoding || supportsNewScanlineDecoding) { |
| |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| |
| SkAutoTDelete<SkAndroidCodec> androidCodec(nullptr); |
| if (isIncomplete) { |
| size_t size = stream->getLength(); |
| SkAutoTUnref<SkData> data((SkData::NewFromStream(stream, 2 * size / 3))); |
| androidCodec.reset(SkAndroidCodec::NewFromData(data)); |
| } else { |
| androidCodec.reset(SkAndroidCodec::NewFromStream(stream.release())); |
| } |
| if (!androidCodec) { |
| ERRORF(r, "Unable to decode '%s'", path); |
| return; |
| } |
| |
| SkBitmap bm; |
| SkMD5::Digest androidCodecDigest; |
| test_codec(r, androidCodec.get(), bm, info, size, expectedResult, &androidCodecDigest, |
| &codecDigest); |
| } |
| |
| if (!isIncomplete) { |
| // Test SkCodecImageGenerator |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| SkAutoTUnref<SkData> fullData(SkData::NewFromStream(stream, stream->getLength())); |
| SkAutoTDelete<SkImageGenerator> gen(SkCodecImageGenerator::NewFromEncodedCodec(fullData)); |
| SkBitmap bm; |
| bm.allocPixels(info); |
| SkAutoLockPixels autoLockPixels(bm); |
| REPORTER_ASSERT(r, gen->getPixels(info, bm.getPixels(), bm.rowBytes())); |
| compare_to_good_digest(r, codecDigest, bm); |
| |
| #if PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR < 5 |
| // FIXME: With older versions of libpng, SkPngCodec requires being able to call |
| // SkStream::move(), which is not supported by SkFrontBufferedStream. (Android |
| // has a more recent version of libpng which uses png_process_data_pause to |
| // avoid calling move().) |
| if (!SkStrEndsWith(path, ".png")) |
| #endif |
| { |
| // Test using SkFrontBufferedStream, as Android does |
| SkStream* bufferedStream = SkFrontBufferedStream::Create(new SkMemoryStream(fullData), |
| SkCodec::MinBufferedBytesNeeded()); |
| REPORTER_ASSERT(r, bufferedStream); |
| codec.reset(SkCodec::NewFromStream(bufferedStream)); |
| REPORTER_ASSERT(r, codec); |
| if (codec) { |
| test_info(r, codec.get(), info, SkCodec::kSuccess, &codecDigest); |
| } |
| } |
| } |
| |
| // If we've just tested incomplete decodes, let's run the same test again on full decodes. |
| if (isIncomplete) { |
| check(r, path, size, supportsScanlineDecoding, supportsSubsetDecoding, false); |
| } |
| } |
| |
| DEF_TEST(Codec, r) { |
| // WBMP |
| check(r, "mandrill.wbmp", SkISize::Make(512, 512), true, false, true); |
| |
| // WEBP |
| check(r, "baby_tux.webp", SkISize::Make(386, 395), false, true, true); |
| check(r, "color_wheel.webp", SkISize::Make(128, 128), false, true, true); |
| check(r, "yellow_rose.webp", SkISize::Make(400, 301), false, true, true); |
| |
| // BMP |
| check(r, "randPixels.bmp", SkISize::Make(8, 8), true, false, true); |
| check(r, "rle.bmp", SkISize::Make(320, 240), true, false, true); |
| |
| // ICO |
| // FIXME: We are not ready to test incomplete ICOs |
| // These two tests examine interestingly different behavior: |
| // Decodes an embedded BMP image |
| check(r, "color_wheel.ico", SkISize::Make(128, 128), true, false, false); |
| // Decodes an embedded PNG image |
| check(r, "google_chrome.ico", SkISize::Make(256, 256), false, false, false, true); |
| |
| // GIF |
| // FIXME: We are not ready to test incomplete GIFs |
| check(r, "box.gif", SkISize::Make(200, 55), true, false, false); |
| check(r, "color_wheel.gif", SkISize::Make(128, 128), true, false, false); |
| // randPixels.gif is too small to test incomplete |
| check(r, "randPixels.gif", SkISize::Make(8, 8), true, false, false); |
| |
| // JPG |
| check(r, "CMYK.jpg", SkISize::Make(642, 516), true, false, true); |
| check(r, "color_wheel.jpg", SkISize::Make(128, 128), true, false, true); |
| // grayscale.jpg is too small to test incomplete |
| check(r, "grayscale.jpg", SkISize::Make(128, 128), true, false, false); |
| check(r, "mandrill_512_q075.jpg", SkISize::Make(512, 512), true, false, true); |
| // randPixels.jpg is too small to test incomplete |
| check(r, "randPixels.jpg", SkISize::Make(8, 8), true, false, false); |
| |
| // PNG |
| check(r, "arrow.png", SkISize::Make(187, 312), false, false, true, true); |
| check(r, "baby_tux.png", SkISize::Make(240, 246), false, false, true, true); |
| check(r, "color_wheel.png", SkISize::Make(128, 128), false, false, true, true); |
| // half-transparent-white-pixel.png is too small to test incomplete |
| check(r, "half-transparent-white-pixel.png", SkISize::Make(1, 1), false, false, false, true); |
| check(r, "mandrill_128.png", SkISize::Make(128, 128), false, false, true, true); |
| check(r, "mandrill_16.png", SkISize::Make(16, 16), false, false, true, true); |
| check(r, "mandrill_256.png", SkISize::Make(256, 256), false, false, true, true); |
| check(r, "mandrill_32.png", SkISize::Make(32, 32), false, false, true, true); |
| check(r, "mandrill_512.png", SkISize::Make(512, 512), false, false, true, true); |
| check(r, "mandrill_64.png", SkISize::Make(64, 64), false, false, true, true); |
| check(r, "plane.png", SkISize::Make(250, 126), false, false, true, true); |
| check(r, "plane_interlaced.png", SkISize::Make(250, 126), false, false, true, true); |
| check(r, "randPixels.png", SkISize::Make(8, 8), false, false, true, true); |
| check(r, "yellow_rose.png", SkISize::Make(400, 301), false, false, true, true); |
| |
| // RAW |
| // Disable RAW tests for Win32. |
| #if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32)) |
| check(r, "sample_1mp.dng", SkISize::Make(600, 338), false, false, false); |
| check(r, "sample_1mp_rotated.dng", SkISize::Make(600, 338), false, false, false); |
| check(r, "dng_with_preview.dng", SkISize::Make(600, 338), true, false, false); |
| #endif |
| } |
| |
| static void test_invalid_stream(skiatest::Reporter* r, const void* stream, size_t len) { |
| // Neither of these calls should return a codec. Bots should catch us if we leaked anything. |
| SkCodec* codec = SkCodec::NewFromStream(new SkMemoryStream(stream, len, false)); |
| REPORTER_ASSERT(r, !codec); |
| |
| SkAndroidCodec* androidCodec = |
| SkAndroidCodec::NewFromStream(new SkMemoryStream(stream, len, false)); |
| REPORTER_ASSERT(r, !androidCodec); |
| } |
| |
| // Ensure that SkCodec::NewFromStream handles freeing the passed in SkStream, |
| // even on failure. Test some bad streams. |
| DEF_TEST(Codec_leaks, r) { |
| // No codec should claim this as their format, so this tests SkCodec::NewFromStream. |
| const char nonSupportedStream[] = "hello world"; |
| // The other strings should look like the beginning of a file type, so we'll call some |
| // internal version of NewFromStream, which must also delete the stream on failure. |
| const unsigned char emptyPng[] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a }; |
| const unsigned char emptyJpeg[] = { 0xFF, 0xD8, 0xFF }; |
| const char emptyWebp[] = "RIFF1234WEBPVP"; |
| const char emptyBmp[] = { 'B', 'M' }; |
| const char emptyIco[] = { '\x00', '\x00', '\x01', '\x00' }; |
| const char emptyGif[] = "GIFVER"; |
| |
| test_invalid_stream(r, nonSupportedStream, sizeof(nonSupportedStream)); |
| test_invalid_stream(r, emptyPng, sizeof(emptyPng)); |
| test_invalid_stream(r, emptyJpeg, sizeof(emptyJpeg)); |
| test_invalid_stream(r, emptyWebp, sizeof(emptyWebp)); |
| test_invalid_stream(r, emptyBmp, sizeof(emptyBmp)); |
| test_invalid_stream(r, emptyIco, sizeof(emptyIco)); |
| test_invalid_stream(r, emptyGif, sizeof(emptyGif)); |
| } |
| |
| DEF_TEST(Codec_null, r) { |
| // Attempting to create an SkCodec or an SkAndroidCodec with null should not |
| // crash. |
| SkCodec* codec = SkCodec::NewFromStream(nullptr); |
| REPORTER_ASSERT(r, !codec); |
| |
| SkAndroidCodec* androidCodec = SkAndroidCodec::NewFromStream(nullptr); |
| REPORTER_ASSERT(r, !androidCodec); |
| } |
| |
| static void test_dimensions(skiatest::Reporter* r, const char path[]) { |
| // Create the codec from the resource file |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| SkAutoTDelete<SkAndroidCodec> codec(SkAndroidCodec::NewFromStream(stream.release())); |
| if (!codec) { |
| ERRORF(r, "Unable to create codec '%s'", path); |
| return; |
| } |
| |
| // Check that the decode is successful for a variety of scales |
| for (int sampleSize = 1; sampleSize < 32; sampleSize++) { |
| // Scale the output dimensions |
| SkISize scaledDims = codec->getSampledDimensions(sampleSize); |
| SkImageInfo scaledInfo = codec->getInfo() |
| .makeWH(scaledDims.width(), scaledDims.height()) |
| .makeColorType(kN32_SkColorType); |
| |
| // Set up for the decode |
| size_t rowBytes = scaledDims.width() * sizeof(SkPMColor); |
| size_t totalBytes = scaledInfo.getSafeSize(rowBytes); |
| SkAutoTMalloc<SkPMColor> pixels(totalBytes); |
| |
| SkAndroidCodec::AndroidOptions options; |
| options.fSampleSize = sampleSize; |
| SkCodec::Result result = |
| codec->getAndroidPixels(scaledInfo, pixels.get(), rowBytes, &options); |
| REPORTER_ASSERT(r, SkCodec::kSuccess == result); |
| } |
| } |
| |
| // Ensure that onGetScaledDimensions returns valid image dimensions to use for decodes |
| DEF_TEST(Codec_Dimensions, r) { |
| // JPG |
| test_dimensions(r, "CMYK.jpg"); |
| test_dimensions(r, "color_wheel.jpg"); |
| test_dimensions(r, "grayscale.jpg"); |
| test_dimensions(r, "mandrill_512_q075.jpg"); |
| test_dimensions(r, "randPixels.jpg"); |
| |
| // Decoding small images with very large scaling factors is a potential |
| // source of bugs and crashes. We disable these tests in Gold because |
| // tiny images are not very useful to look at. |
| // Here we make sure that we do not crash or access illegal memory when |
| // performing scaled decodes on small images. |
| test_dimensions(r, "1x1.png"); |
| test_dimensions(r, "2x2.png"); |
| test_dimensions(r, "3x3.png"); |
| test_dimensions(r, "3x1.png"); |
| test_dimensions(r, "1x1.png"); |
| test_dimensions(r, "16x1.png"); |
| test_dimensions(r, "1x16.png"); |
| test_dimensions(r, "mandrill_16.png"); |
| |
| // RAW |
| // Disable RAW tests for Win32. |
| #if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32)) |
| test_dimensions(r, "sample_1mp.dng"); |
| test_dimensions(r, "sample_1mp_rotated.dng"); |
| test_dimensions(r, "dng_with_preview.dng"); |
| #endif |
| } |
| |
| static void test_invalid(skiatest::Reporter* r, const char path[]) { |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release())); |
| REPORTER_ASSERT(r, nullptr == codec); |
| } |
| |
| DEF_TEST(Codec_Empty, r) { |
| // Test images that should not be able to create a codec |
| test_invalid(r, "empty_images/zero-dims.gif"); |
| test_invalid(r, "empty_images/zero-embedded.ico"); |
| test_invalid(r, "empty_images/zero-width.bmp"); |
| test_invalid(r, "empty_images/zero-height.bmp"); |
| test_invalid(r, "empty_images/zero-width.jpg"); |
| test_invalid(r, "empty_images/zero-height.jpg"); |
| test_invalid(r, "empty_images/zero-width.png"); |
| test_invalid(r, "empty_images/zero-height.png"); |
| test_invalid(r, "empty_images/zero-width.wbmp"); |
| test_invalid(r, "empty_images/zero-height.wbmp"); |
| // This image is an ico with an embedded mask-bmp. This is illegal. |
| test_invalid(r, "invalid_images/mask-bmp-ico.ico"); |
| } |
| |
| static void test_invalid_parameters(skiatest::Reporter* r, const char path[]) { |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| SkAutoTDelete<SkCodec> decoder(SkCodec::NewFromStream(stream.release())); |
| if (!decoder) { |
| SkDebugf("Missing codec for %s\n", path); |
| return; |
| } |
| |
| const SkImageInfo info = decoder->getInfo().makeColorType(kIndex_8_SkColorType); |
| |
| // This should return kSuccess because kIndex8 is supported. |
| SkPMColor colorStorage[256]; |
| int colorCount; |
| SkCodec::Result result = decoder->startScanlineDecode(info, nullptr, colorStorage, |
| &colorCount); |
| if (SkCodec::kSuccess == result) { |
| // This should return kInvalidParameters because, in kIndex_8 mode, we must pass in a valid |
| // colorPtr and a valid colorCountPtr. |
| result = decoder->startScanlineDecode(info, nullptr, nullptr, nullptr); |
| REPORTER_ASSERT(r, SkCodec::kInvalidParameters == result); |
| result = decoder->startScanlineDecode(info); |
| REPORTER_ASSERT(r, SkCodec::kInvalidParameters == result); |
| } else if (SkCodec::kUnimplemented == result) { |
| // New method should be supported: |
| SkBitmap bm; |
| sk_sp<SkColorTable> colorTable(new SkColorTable(colorStorage, 256)); |
| bm.allocPixels(info, nullptr, colorTable.get()); |
| result = decoder->startIncrementalDecode(info, bm.getPixels(), bm.rowBytes(), nullptr, |
| colorStorage, &colorCount); |
| REPORTER_ASSERT(r, SkCodec::kSuccess == result); |
| result = decoder->startIncrementalDecode(info, bm.getPixels(), bm.rowBytes()); |
| REPORTER_ASSERT(r, SkCodec::kInvalidParameters == result); |
| } else { |
| // The test is uninteresting if kIndex8 is not supported |
| ERRORF(r, "Should not call test_invalid_parameters for non-Index8 file: %s\n", path); |
| return; |
| } |
| |
| } |
| |
| DEF_TEST(Codec_Params, r) { |
| test_invalid_parameters(r, "index8.png"); |
| test_invalid_parameters(r, "mandrill.wbmp"); |
| } |
| |
| static void codex_test_write_fn(png_structp png_ptr, png_bytep data, png_size_t len) { |
| SkWStream* sk_stream = (SkWStream*)png_get_io_ptr(png_ptr); |
| if (!sk_stream->write(data, len)) { |
| png_error(png_ptr, "sk_write_fn Error!"); |
| } |
| } |
| |
| #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED |
| DEF_TEST(Codec_pngChunkReader, r) { |
| // Create a dummy bitmap. Use unpremul RGBA for libpng. |
| SkBitmap bm; |
| const int w = 1; |
| const int h = 1; |
| const SkImageInfo bmInfo = SkImageInfo::Make(w, h, kRGBA_8888_SkColorType, |
| kUnpremul_SkAlphaType); |
| bm.setInfo(bmInfo); |
| bm.allocPixels(); |
| bm.eraseColor(SK_ColorBLUE); |
| SkMD5::Digest goodDigest; |
| md5(bm, &goodDigest); |
| |
| // Write to a png file. |
| png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr); |
| REPORTER_ASSERT(r, png); |
| if (!png) { |
| return; |
| } |
| |
| png_infop info = png_create_info_struct(png); |
| REPORTER_ASSERT(r, info); |
| if (!info) { |
| png_destroy_write_struct(&png, nullptr); |
| return; |
| } |
| |
| if (setjmp(png_jmpbuf(png))) { |
| ERRORF(r, "failed writing png"); |
| png_destroy_write_struct(&png, &info); |
| return; |
| } |
| |
| SkDynamicMemoryWStream wStream; |
| png_set_write_fn(png, (void*) (&wStream), codex_test_write_fn, nullptr); |
| |
| png_set_IHDR(png, info, (png_uint_32)w, (png_uint_32)h, 8, |
| PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, |
| PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); |
| |
| // Create some chunks that match the Android framework's use. |
| static png_unknown_chunk gUnknowns[] = { |
| { "npOl", (png_byte*)"outline", sizeof("outline"), PNG_HAVE_IHDR }, |
| { "npLb", (png_byte*)"layoutBounds", sizeof("layoutBounds"), PNG_HAVE_IHDR }, |
| { "npTc", (png_byte*)"ninePatchData", sizeof("ninePatchData"), PNG_HAVE_IHDR }, |
| }; |
| |
| png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS, (png_byte*)"npOl\0npLb\0npTc\0", 3); |
| png_set_unknown_chunks(png, info, gUnknowns, SK_ARRAY_COUNT(gUnknowns)); |
| #if PNG_LIBPNG_VER < 10600 |
| /* Deal with unknown chunk location bug in 1.5.x and earlier */ |
| png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR); |
| png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR); |
| #endif |
| |
| png_write_info(png, info); |
| |
| for (int j = 0; j < h; j++) { |
| png_bytep row = (png_bytep)(bm.getAddr(0, j)); |
| png_write_rows(png, &row, 1); |
| } |
| png_write_end(png, info); |
| png_destroy_write_struct(&png, &info); |
| |
| class ChunkReader : public SkPngChunkReader { |
| public: |
| ChunkReader(skiatest::Reporter* r) |
| : fReporter(r) |
| { |
| this->reset(); |
| } |
| |
| bool readChunk(const char tag[], const void* data, size_t length) override { |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gUnknowns); ++i) { |
| if (!strcmp(tag, (const char*) gUnknowns[i].name)) { |
| // Tag matches. This should have been the first time we see it. |
| REPORTER_ASSERT(fReporter, !fSeen[i]); |
| fSeen[i] = true; |
| |
| // Data and length should match |
| REPORTER_ASSERT(fReporter, length == gUnknowns[i].size); |
| REPORTER_ASSERT(fReporter, !strcmp((const char*) data, |
| (const char*) gUnknowns[i].data)); |
| return true; |
| } |
| } |
| ERRORF(fReporter, "Saw an unexpected unknown chunk."); |
| return true; |
| } |
| |
| bool allHaveBeenSeen() { |
| bool ret = true; |
| for (auto seen : fSeen) { |
| ret &= seen; |
| } |
| return ret; |
| } |
| |
| void reset() { |
| sk_bzero(fSeen, sizeof(fSeen)); |
| } |
| |
| private: |
| skiatest::Reporter* fReporter; // Unowned |
| bool fSeen[3]; |
| }; |
| |
| ChunkReader chunkReader(r); |
| |
| // Now read the file with SkCodec. |
| SkAutoTUnref<SkData> data(wStream.copyToData()); |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data, &chunkReader)); |
| REPORTER_ASSERT(r, codec); |
| if (!codec) { |
| return; |
| } |
| |
| // Now compare to the original. |
| SkBitmap decodedBm; |
| decodedBm.setInfo(codec->getInfo()); |
| decodedBm.allocPixels(); |
| SkCodec::Result result = codec->getPixels(codec->getInfo(), decodedBm.getPixels(), |
| decodedBm.rowBytes()); |
| REPORTER_ASSERT(r, SkCodec::kSuccess == result); |
| |
| if (decodedBm.colorType() != bm.colorType()) { |
| SkBitmap tmp; |
| bool success = decodedBm.copyTo(&tmp, bm.colorType()); |
| REPORTER_ASSERT(r, success); |
| if (!success) { |
| return; |
| } |
| |
| tmp.swap(decodedBm); |
| } |
| |
| compare_to_good_digest(r, goodDigest, decodedBm); |
| REPORTER_ASSERT(r, chunkReader.allHaveBeenSeen()); |
| |
| // Decoding again will read the chunks again. |
| chunkReader.reset(); |
| REPORTER_ASSERT(r, !chunkReader.allHaveBeenSeen()); |
| result = codec->getPixels(codec->getInfo(), decodedBm.getPixels(), decodedBm.rowBytes()); |
| REPORTER_ASSERT(r, SkCodec::kSuccess == result); |
| REPORTER_ASSERT(r, chunkReader.allHaveBeenSeen()); |
| } |
| #endif // PNG_READ_UNKNOWN_CHUNKS_SUPPORTED |
| |
| // Stream that can only peek up to a limit |
| class LimitedPeekingMemStream : public SkStream { |
| public: |
| LimitedPeekingMemStream(SkData* data, size_t limit) |
| : fStream(data) |
| , fLimit(limit) {} |
| |
| size_t peek(void* buf, size_t bytes) const override { |
| return fStream.peek(buf, SkTMin(bytes, fLimit)); |
| } |
| size_t read(void* buf, size_t bytes) override { |
| return fStream.read(buf, bytes); |
| } |
| bool rewind() override { |
| return fStream.rewind(); |
| } |
| bool isAtEnd() const override { |
| return false; |
| } |
| private: |
| SkMemoryStream fStream; |
| const size_t fLimit; |
| }; |
| |
| // Stream that is not an asset stream (!hasPosition() or !hasLength()) |
| class NotAssetMemStream : public SkStream { |
| public: |
| NotAssetMemStream(SkData* data) : fStream(data) {} |
| |
| bool hasPosition() const override { |
| return false; |
| } |
| |
| bool hasLength() const override { |
| return false; |
| } |
| |
| size_t peek(void* buf, size_t bytes) const override { |
| return fStream.peek(buf, bytes); |
| } |
| size_t read(void* buf, size_t bytes) override { |
| return fStream.read(buf, bytes); |
| } |
| bool rewind() override { |
| return fStream.rewind(); |
| } |
| bool isAtEnd() const override { |
| return fStream.isAtEnd(); |
| } |
| private: |
| SkMemoryStream fStream; |
| }; |
| |
| // Disable RAW tests for Win32. |
| #if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32)) |
| // Test that the RawCodec works also for not asset stream. This will test the code path using |
| // SkRawBufferedStream instead of SkRawAssetStream. |
| DEF_TEST(Codec_raw_notseekable, r) { |
| const char* path = "dng_with_preview.dng"; |
| SkString fullPath(GetResourcePath(path)); |
| SkAutoTUnref<SkData> data(SkData::NewFromFileName(fullPath.c_str())); |
| if (!data) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(new NotAssetMemStream(data))); |
| REPORTER_ASSERT(r, codec); |
| |
| test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr); |
| } |
| #endif |
| |
| // Test that even if webp_parse_header fails to peek enough, it will fall back to read() |
| // + rewind() and succeed. |
| DEF_TEST(Codec_webp_peek, r) { |
| const char* path = "baby_tux.webp"; |
| SkString fullPath(GetResourcePath(path)); |
| auto data = SkData::MakeFromFileName(fullPath.c_str()); |
| if (!data) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| |
| // The limit is less than webp needs to peek or read. |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream( |
| new LimitedPeekingMemStream(data.get(), 25))); |
| REPORTER_ASSERT(r, codec); |
| |
| test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr); |
| |
| // Similarly, a stream which does not peek should still succeed. |
| codec.reset(SkCodec::NewFromStream(new LimitedPeekingMemStream(data.get(), 0))); |
| REPORTER_ASSERT(r, codec); |
| |
| test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr); |
| } |
| |
| // SkCodec's wbmp decoder was initially unnecessarily restrictive. |
| // It required the second byte to be zero. The wbmp specification allows |
| // a couple of bits to be 1 (so long as they do not overlap with 0x9F). |
| // Test that SkCodec now supports an image with these bits set. |
| DEF_TEST(Codec_wbmp, r) { |
| const char* path = "mandrill.wbmp"; |
| SkAutoTDelete<SkStream> stream(resource(path)); |
| if (!stream) { |
| SkDebugf("Missing resource '%s'\n", path); |
| return; |
| } |
| |
| // Modify the stream to contain a second byte with some bits set. |
| auto data = SkCopyStreamToData(stream); |
| uint8_t* writeableData = static_cast<uint8_t*>(data->writable_data()); |
| writeableData[1] = static_cast<uint8_t>(~0x9F); |
| |
| // SkCodec should support this. |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data.get())); |
| REPORTER_ASSERT(r, codec); |
| if (!codec) { |
| return; |
| } |
| test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr); |
| } |
| |
| // wbmp images have a header that can be arbitrarily large, depending on the |
| // size of the image. We cap the size at 65535, meaning we only need to look at |
| // 8 bytes to determine whether we can read the image. This is important |
| // because SkCodec only passes 14 bytes to SkWbmpCodec to determine whether the |
| // image is a wbmp. |
| DEF_TEST(Codec_wbmp_max_size, r) { |
| const unsigned char maxSizeWbmp[] = { 0x00, 0x00, // Header |
| 0x83, 0xFF, 0x7F, // W: 65535 |
| 0x83, 0xFF, 0x7F }; // H: 65535 |
| SkAutoTDelete<SkStream> stream(new SkMemoryStream(maxSizeWbmp, sizeof(maxSizeWbmp), false)); |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release())); |
| |
| REPORTER_ASSERT(r, codec); |
| if (!codec) return; |
| |
| REPORTER_ASSERT(r, codec->getInfo().width() == 65535); |
| REPORTER_ASSERT(r, codec->getInfo().height() == 65535); |
| |
| // Now test an image which is too big. Any image with a larger header (i.e. |
| // has bigger width/height) is also too big. |
| const unsigned char tooBigWbmp[] = { 0x00, 0x00, // Header |
| 0x84, 0x80, 0x00, // W: 65536 |
| 0x84, 0x80, 0x00 }; // H: 65536 |
| stream.reset(new SkMemoryStream(tooBigWbmp, sizeof(tooBigWbmp), false)); |
| codec.reset(SkCodec::NewFromStream(stream.release())); |
| |
| REPORTER_ASSERT(r, !codec); |
| } |
| |
| // Only rewinds up to a limit. |
| class LimitedRewindingStream : public SkStream { |
| public: |
| static SkStream* Make(const char path[], size_t limit) { |
| SkStream* stream = resource(path); |
| if (!stream) { |
| return nullptr; |
| } |
| return new LimitedRewindingStream(stream, limit); |
| } |
| |
| size_t read(void* buffer, size_t size) override { |
| const size_t bytes = fStream->read(buffer, size); |
| fPosition += bytes; |
| return bytes; |
| } |
| |
| bool isAtEnd() const override { |
| return fStream->isAtEnd(); |
| } |
| |
| bool rewind() override { |
| if (fPosition <= fLimit && fStream->rewind()) { |
| fPosition = 0; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private: |
| SkAutoTDelete<SkStream> fStream; |
| const size_t fLimit; |
| size_t fPosition; |
| |
| LimitedRewindingStream(SkStream* stream, size_t limit) |
| : fStream(stream) |
| , fLimit(limit) |
| , fPosition(0) |
| { |
| SkASSERT(fStream); |
| } |
| }; |
| |
| DEF_TEST(Codec_fallBack, r) { |
| // SkAndroidCodec needs to be able to fall back to scanline decoding |
| // if incremental decoding does not work. Make sure this does not |
| // require a rewind. |
| |
| // Formats that currently do not support incremental decoding |
| auto files = { |
| "box.gif", |
| "CMYK.jpg", |
| "color_wheel.ico", |
| "mandrill.wbmp", |
| "randPixels.bmp", |
| }; |
| for (auto file : files) { |
| SkStream* stream = LimitedRewindingStream::Make(file, 14); |
| if (!stream) { |
| SkDebugf("Missing resources (%s). Set --resourcePath.\n", file); |
| return; |
| } |
| |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream)); |
| if (!codec) { |
| ERRORF(r, "Failed to create codec for %s,", file); |
| continue; |
| } |
| |
| SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType); |
| SkBitmap bm; |
| bm.allocPixels(info); |
| |
| if (SkCodec::kUnimplemented != codec->startIncrementalDecode(info, bm.getPixels(), |
| bm.rowBytes())) { |
| ERRORF(r, "Is scanline decoding now implemented for %s?", file); |
| continue; |
| } |
| |
| // Scanline decoding should not require a rewind. |
| SkCodec::Result result = codec->startScanlineDecode(info); |
| if (SkCodec::kSuccess != result) { |
| ERRORF(r, "Scanline decoding failed for %s with %i", file, result); |
| } |
| } |
| } |