| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "tests/Test.h" |
| #include "tools/Resources.h" |
| |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColorPriv.h" |
| #include "include/core/SkEncodedImageFormat.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageEncoder.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkSurface.h" |
| #include "include/encode/SkJpegEncoder.h" |
| #include "include/encode/SkPngEncoder.h" |
| #include "include/encode/SkWebpEncoder.h" |
| #include "include/private/SkImageInfoPriv.h" |
| |
| #include <png.h> |
| |
| #include <algorithm> |
| #include <string> |
| #include <vector> |
| |
| // FIXME: Update the Google3 build's dependencies so it can run this test. |
| #ifndef SK_BUILD_FOR_GOOGLE3 |
| #include "webp/decode.h" |
| #endif |
| |
| static bool encode(SkEncodedImageFormat format, SkWStream* dst, const SkPixmap& src) { |
| switch (format) { |
| case SkEncodedImageFormat::kJPEG: |
| return SkJpegEncoder::Encode(dst, src, SkJpegEncoder::Options()); |
| case SkEncodedImageFormat::kPNG: |
| return SkPngEncoder::Encode(dst, src, SkPngEncoder::Options()); |
| default: |
| return false; |
| } |
| } |
| |
| static std::unique_ptr<SkEncoder> make(SkEncodedImageFormat format, SkWStream* dst, |
| const SkPixmap& src) { |
| switch (format) { |
| case SkEncodedImageFormat::kJPEG: |
| return SkJpegEncoder::Make(dst, src, SkJpegEncoder::Options()); |
| case SkEncodedImageFormat::kPNG: |
| return SkPngEncoder::Make(dst, src, SkPngEncoder::Options()); |
| default: |
| return nullptr; |
| } |
| } |
| |
| static void test_encode(skiatest::Reporter* r, SkEncodedImageFormat format) { |
| SkBitmap bitmap; |
| bool success = GetResourceAsBitmap("images/mandrill_128.png", &bitmap); |
| if (!success) { |
| return; |
| } |
| |
| SkPixmap src; |
| success = bitmap.peekPixels(&src); |
| REPORTER_ASSERT(r, success); |
| if (!success) { |
| return; |
| } |
| |
| SkDynamicMemoryWStream dst0, dst1, dst2, dst3; |
| success = encode(format, &dst0, src); |
| REPORTER_ASSERT(r, success); |
| |
| auto encoder1 = make(format, &dst1, src); |
| for (int i = 0; i < src.height(); i++) { |
| success = encoder1->encodeRows(1); |
| REPORTER_ASSERT(r, success); |
| } |
| |
| auto encoder2 = make(format, &dst2, src); |
| for (int i = 0; i < src.height(); i+=3) { |
| success = encoder2->encodeRows(3); |
| REPORTER_ASSERT(r, success); |
| } |
| |
| auto encoder3 = make(format, &dst3, src); |
| success = encoder3->encodeRows(200); |
| REPORTER_ASSERT(r, success); |
| |
| sk_sp<SkData> data0 = dst0.detachAsData(); |
| sk_sp<SkData> data1 = dst1.detachAsData(); |
| sk_sp<SkData> data2 = dst2.detachAsData(); |
| sk_sp<SkData> data3 = dst3.detachAsData(); |
| REPORTER_ASSERT(r, data0->equals(data1.get())); |
| REPORTER_ASSERT(r, data0->equals(data2.get())); |
| REPORTER_ASSERT(r, data0->equals(data3.get())); |
| } |
| |
| DEF_TEST(Encode, r) { |
| test_encode(r, SkEncodedImageFormat::kJPEG); |
| test_encode(r, SkEncodedImageFormat::kPNG); |
| } |
| |
| static inline bool almost_equals(SkPMColor a, SkPMColor b, int tolerance) { |
| if (SkTAbs((int)SkGetPackedR32(a) - (int)SkGetPackedR32(b)) > tolerance) { |
| return false; |
| } |
| |
| if (SkTAbs((int)SkGetPackedG32(a) - (int)SkGetPackedG32(b)) > tolerance) { |
| return false; |
| } |
| |
| if (SkTAbs((int)SkGetPackedB32(a) - (int)SkGetPackedB32(b)) > tolerance) { |
| return false; |
| } |
| |
| if (SkTAbs((int)SkGetPackedA32(a) - (int)SkGetPackedA32(b)) > tolerance) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static inline bool almost_equals(const SkBitmap& a, const SkBitmap& b, int tolerance) { |
| if (a.info() != b.info()) { |
| return false; |
| } |
| |
| SkASSERT(kN32_SkColorType == a.colorType()); |
| for (int y = 0; y < a.height(); y++) { |
| for (int x = 0; x < a.width(); x++) { |
| if (!almost_equals(*a.getAddr32(x, y), *b.getAddr32(x, y), tolerance)) { |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| DEF_TEST(Encode_JPG, r) { |
| auto image = GetResourceAsImage("images/mandrill_128.png"); |
| if (!image) { |
| return; |
| } |
| |
| for (auto ct : { kRGBA_8888_SkColorType, |
| kBGRA_8888_SkColorType, |
| kRGB_565_SkColorType, |
| kARGB_4444_SkColorType, |
| kGray_8_SkColorType, |
| kRGBA_F16_SkColorType }) { |
| for (auto at : { kPremul_SkAlphaType, kUnpremul_SkAlphaType, kOpaque_SkAlphaType }) { |
| auto info = SkImageInfo::Make(image->width(), image->height(), ct, at); |
| auto surface = SkSurface::MakeRaster(info); |
| auto canvas = surface->getCanvas(); |
| canvas->drawImage(image, 0, 0); |
| |
| SkBitmap bm; |
| bm.allocPixels(info); |
| if (!surface->makeImageSnapshot()->readPixels(nullptr, bm.pixmap(), 0, 0)) { |
| ERRORF(r, "failed to readPixels! ct: %i\tat: %i\n", ct, at); |
| continue; |
| } |
| for (auto alphaOption : { SkJpegEncoder::AlphaOption::kIgnore, |
| SkJpegEncoder::AlphaOption::kBlendOnBlack }) { |
| SkJpegEncoder::Options opts; |
| opts.fAlphaOption = alphaOption; |
| SkNullWStream ignored; |
| if (!SkJpegEncoder::Encode(&ignored, bm.pixmap(), opts)) { |
| REPORTER_ASSERT(r, ct == kARGB_4444_SkColorType |
| && alphaOption == SkJpegEncoder::AlphaOption::kBlendOnBlack); |
| } |
| } |
| } |
| } |
| } |
| |
| DEF_TEST(Encode_JpegDownsample, r) { |
| SkBitmap bitmap; |
| bool success = GetResourceAsBitmap("images/mandrill_128.png", &bitmap); |
| if (!success) { |
| return; |
| } |
| |
| SkPixmap src; |
| success = bitmap.peekPixels(&src); |
| REPORTER_ASSERT(r, success); |
| if (!success) { |
| return; |
| } |
| |
| SkDynamicMemoryWStream dst0, dst1, dst2; |
| SkJpegEncoder::Options options; |
| success = SkJpegEncoder::Encode(&dst0, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fDownsample = SkJpegEncoder::Downsample::k422; |
| success = SkJpegEncoder::Encode(&dst1, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fDownsample = SkJpegEncoder::Downsample::k444; |
| success = SkJpegEncoder::Encode(&dst2, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| sk_sp<SkData> data0 = dst0.detachAsData(); |
| sk_sp<SkData> data1 = dst1.detachAsData(); |
| sk_sp<SkData> data2 = dst2.detachAsData(); |
| REPORTER_ASSERT(r, data0->size() < data1->size()); |
| REPORTER_ASSERT(r, data1->size() < data2->size()); |
| |
| SkBitmap bm0, bm1, bm2; |
| SkImage::MakeFromEncoded(data0)->asLegacyBitmap(&bm0); |
| SkImage::MakeFromEncoded(data1)->asLegacyBitmap(&bm1); |
| SkImage::MakeFromEncoded(data2)->asLegacyBitmap(&bm2); |
| REPORTER_ASSERT(r, almost_equals(bm0, bm1, 60)); |
| REPORTER_ASSERT(r, almost_equals(bm1, bm2, 60)); |
| } |
| |
| static inline void pushComment( |
| std::vector<std::string>& comments, const char* keyword, const char* text) { |
| comments.push_back(keyword); |
| comments.push_back(text); |
| } |
| |
| static void testPngComments(const SkPixmap& src, SkPngEncoder::Options& options, |
| skiatest::Reporter* r) { |
| std::vector<std::string> commentStrings; |
| pushComment(commentStrings, "key", "text"); |
| pushComment(commentStrings, "test", "something"); |
| pushComment(commentStrings, "have some", "spaces in both"); |
| |
| std::string longKey(PNG_KEYWORD_MAX_LENGTH, 'x'); |
| #ifdef SK_DEBUG |
| commentStrings.push_back(longKey); |
| #else |
| // We call SkDEBUGFAILF it the key is too long so we'll only test this in release mode. |
| commentStrings.push_back(longKey + "x"); |
| #endif |
| commentStrings.push_back(""); |
| |
| std::vector<const char*> commentPointers; |
| std::vector<size_t> commentSizes; |
| for(auto& str : commentStrings) { |
| commentPointers.push_back(str.c_str()); |
| commentSizes.push_back(str.length() + 1); |
| } |
| |
| options.fComments = SkDataTable::MakeCopyArrays((void const *const *)commentPointers.data(), |
| commentSizes.data(), commentStrings.size()); |
| |
| |
| SkDynamicMemoryWStream dst; |
| bool success = SkPngEncoder::Encode(&dst, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| std::vector<char> output(dst.bytesWritten()); |
| dst.copyTo(output.data()); |
| |
| // Each chunk is of the form length (4 bytes), chunk type (tEXt), data, |
| // checksum (4 bytes). Make sure we find all of them in the encoded |
| // results. |
| const char kExpected1[] = |
| "\x00\x00\x00\x08tEXtkey\x00text\x9e\xe7\x66\x51"; |
| const char kExpected2[] = |
| "\x00\x00\x00\x0etEXttest\x00something\x29\xba\xef\xac"; |
| const char kExpected3[] = |
| "\x00\x00\x00\x18tEXthave some\x00spaces in both\x8d\x69\x34\x2d"; |
| std::string longKeyRecord = "tEXt" + longKey; // A snippet of our long key comment |
| std::string tooLongRecord = "tExt" + longKey + "x"; // A snippet whose key is too long |
| |
| auto search1 = std::search(output.begin(), output.end(), |
| kExpected1, kExpected1 + sizeof(kExpected1)); |
| auto search2 = std::search(output.begin(), output.end(), |
| kExpected2, kExpected2 + sizeof(kExpected2)); |
| auto search3 = std::search(output.begin(), output.end(), |
| kExpected3, kExpected3 + sizeof(kExpected3)); |
| auto search4 = std::search(output.begin(), output.end(), |
| longKeyRecord.begin(), longKeyRecord.end()); |
| auto search5 = std::search(output.begin(), output.end(), |
| tooLongRecord.begin(), tooLongRecord.end()); |
| |
| REPORTER_ASSERT(r, search1 != output.end()); |
| REPORTER_ASSERT(r, search2 != output.end()); |
| REPORTER_ASSERT(r, search3 != output.end()); |
| REPORTER_ASSERT(r, search4 != output.end()); |
| REPORTER_ASSERT(r, search5 == output.end()); |
| // Comments test ends |
| } |
| |
| DEF_TEST(Encode_PngOptions, r) { |
| SkBitmap bitmap; |
| bool success = GetResourceAsBitmap("images/mandrill_128.png", &bitmap); |
| if (!success) { |
| return; |
| } |
| |
| SkPixmap src; |
| success = bitmap.peekPixels(&src); |
| REPORTER_ASSERT(r, success); |
| if (!success) { |
| return; |
| } |
| |
| SkDynamicMemoryWStream dst0, dst1, dst2; |
| SkPngEncoder::Options options; |
| success = SkPngEncoder::Encode(&dst0, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fFilterFlags = SkPngEncoder::FilterFlag::kUp; |
| success = SkPngEncoder::Encode(&dst1, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fZLibLevel = 3; |
| success = SkPngEncoder::Encode(&dst2, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| testPngComments(src, options, r); |
| |
| sk_sp<SkData> data0 = dst0.detachAsData(); |
| sk_sp<SkData> data1 = dst1.detachAsData(); |
| sk_sp<SkData> data2 = dst2.detachAsData(); |
| REPORTER_ASSERT(r, data0->size() < data1->size()); |
| REPORTER_ASSERT(r, data1->size() < data2->size()); |
| |
| SkBitmap bm0, bm1, bm2; |
| SkImage::MakeFromEncoded(data0)->asLegacyBitmap(&bm0); |
| SkImage::MakeFromEncoded(data1)->asLegacyBitmap(&bm1); |
| SkImage::MakeFromEncoded(data2)->asLegacyBitmap(&bm2); |
| REPORTER_ASSERT(r, almost_equals(bm0, bm1, 0)); |
| REPORTER_ASSERT(r, almost_equals(bm0, bm2, 0)); |
| } |
| |
| #ifndef SK_BUILD_FOR_GOOGLE3 |
| DEF_TEST(Encode_WebpQuality, r) { |
| SkBitmap bm; |
| bm.allocN32Pixels(100, 100); |
| bm.eraseColor(SK_ColorBLUE); |
| |
| auto dataLossy = SkEncodeBitmap(bm, SkEncodedImageFormat::kWEBP, 99); |
| auto dataLossLess = SkEncodeBitmap(bm, SkEncodedImageFormat::kWEBP, 100); |
| |
| enum Format { |
| kMixed = 0, |
| kLossy = 1, |
| kLossless = 2, |
| }; |
| |
| auto test = [&r](const sk_sp<SkData>& data, Format expected) { |
| auto printFormat = [](int f) { |
| switch (f) { |
| case kMixed: return "mixed"; |
| case kLossy: return "lossy"; |
| case kLossless: return "lossless"; |
| default: return "unknown"; |
| } |
| }; |
| |
| if (!data) { |
| ERRORF(r, "Failed to encode. Expected %s", printFormat(expected)); |
| return; |
| } |
| |
| WebPBitstreamFeatures features; |
| auto status = WebPGetFeatures(data->bytes(), data->size(), &features); |
| if (status != VP8_STATUS_OK) { |
| ERRORF(r, "Encode had an error %i. Expected %s", status, printFormat(expected)); |
| return; |
| } |
| |
| if (expected != features.format) { |
| ERRORF(r, "Expected %s encode, but got format %s", printFormat(expected), |
| printFormat(features.format)); |
| } |
| }; |
| |
| test(dataLossy, kLossy); |
| test(dataLossLess, kLossless); |
| } |
| #endif |
| |
| DEF_TEST(Encode_WebpOptions, r) { |
| SkBitmap bitmap; |
| bool success = GetResourceAsBitmap("images/google_chrome.ico", &bitmap); |
| if (!success) { |
| return; |
| } |
| |
| SkPixmap src; |
| success = bitmap.peekPixels(&src); |
| REPORTER_ASSERT(r, success); |
| if (!success) { |
| return; |
| } |
| |
| SkDynamicMemoryWStream dst0, dst1, dst2, dst3; |
| SkWebpEncoder::Options options; |
| options.fCompression = SkWebpEncoder::Compression::kLossless; |
| options.fQuality = 0.0f; |
| success = SkWebpEncoder::Encode(&dst0, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fQuality = 100.0f; |
| success = SkWebpEncoder::Encode(&dst1, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fCompression = SkWebpEncoder::Compression::kLossy; |
| options.fQuality = 100.0f; |
| success = SkWebpEncoder::Encode(&dst2, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| options.fCompression = SkWebpEncoder::Compression::kLossy; |
| options.fQuality = 50.0f; |
| success = SkWebpEncoder::Encode(&dst3, src, options); |
| REPORTER_ASSERT(r, success); |
| |
| sk_sp<SkData> data0 = dst0.detachAsData(); |
| sk_sp<SkData> data1 = dst1.detachAsData(); |
| sk_sp<SkData> data2 = dst2.detachAsData(); |
| sk_sp<SkData> data3 = dst3.detachAsData(); |
| REPORTER_ASSERT(r, data0->size() > data1->size()); |
| REPORTER_ASSERT(r, data1->size() > data2->size()); |
| REPORTER_ASSERT(r, data2->size() > data3->size()); |
| |
| SkBitmap bm0, bm1, bm2, bm3; |
| SkImage::MakeFromEncoded(data0)->asLegacyBitmap(&bm0); |
| SkImage::MakeFromEncoded(data1)->asLegacyBitmap(&bm1); |
| SkImage::MakeFromEncoded(data2)->asLegacyBitmap(&bm2); |
| SkImage::MakeFromEncoded(data3)->asLegacyBitmap(&bm3); |
| REPORTER_ASSERT(r, almost_equals(bm0, bm1, 0)); |
| REPORTER_ASSERT(r, almost_equals(bm0, bm2, 90)); |
| REPORTER_ASSERT(r, almost_equals(bm2, bm3, 50)); |
| } |
| |
| DEF_TEST(Encode_Alpha, r) { |
| // These formats have no sensible way to encode alpha images. |
| for (auto format : { SkEncodedImageFormat::kJPEG, |
| SkEncodedImageFormat::kPNG, |
| SkEncodedImageFormat::kWEBP }) { |
| for (int ctAsInt = kUnknown_SkColorType + 1; ctAsInt <= kLastEnum_SkColorType; ctAsInt++) { |
| auto ct = static_cast<SkColorType>(ctAsInt); |
| // Non-alpha-only colortypes are tested elsewhere. |
| if (!SkColorTypeIsAlphaOnly(ct)) continue; |
| SkBitmap bm; |
| bm.allocPixels(SkImageInfo::Make(10, 10, ct, kPremul_SkAlphaType)); |
| sk_bzero(bm.getPixels(), bm.computeByteSize()); |
| auto data = SkEncodeBitmap(bm, format, 100); |
| if (format == SkEncodedImageFormat::kPNG && ct == kAlpha_8_SkColorType) { |
| // We support encoding alpha8 to png with our own private meaning. |
| REPORTER_ASSERT(r, data != nullptr); |
| } else { |
| REPORTER_ASSERT(r, data == nullptr); |
| } |
| } |
| } |
| } |