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4107c2985e
Having some rendering test coverage is motivated by #22362, but this test wouldn't have found the crashes over there (since colorspaces.pdf does not contain pattern color spaces). Still, good to have some in-repo test coverage of PDF rendering.
302 lines
13 KiB
C++
302 lines
13 KiB
C++
/*
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* Copyright (c) 2021, Simon Woertz <simon@woertz.at>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ByteString.h>
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#include <AK/Forward.h>
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#include <LibCore/MappedFile.h>
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#include <LibGfx/Bitmap.h>
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#include <LibPDF/CommonNames.h>
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#include <LibPDF/Document.h>
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#include <LibPDF/Function.h>
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#include <LibPDF/Renderer.h>
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#include <LibTest/Macros.h>
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#include <LibTest/TestCase.h>
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TEST_CASE(linearized_pdf)
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{
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auto file = MUST(Core::MappedFile::map("linearized.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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}
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TEST_CASE(non_linearized_pdf)
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{
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auto file = MUST(Core::MappedFile::map("non-linearized.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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}
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TEST_CASE(complex_pdf)
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{
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auto file = MUST(Core::MappedFile::map("complex.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 3U);
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}
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TEST_CASE(empty_file_issue_10702)
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{
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AK::ReadonlyBytes empty;
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auto document = PDF::Document::create(empty);
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EXPECT(document.is_error());
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}
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TEST_CASE(encodig)
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{
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auto file = MUST(Core::MappedFile::map("encoding.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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auto info_dict = MUST(document->info_dict()).value();
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EXPECT_EQ(MUST(info_dict.author()).value(), "Nico Weber");
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EXPECT_EQ(MUST(info_dict.producer()).value(), (char const*)u8"Manüally Created");
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EXPECT_EQ(MUST(info_dict.title()).value(), (char const*)u8"Êñ©•ding test");
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auto outline_dict = document->outline();
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EXPECT_EQ(outline_dict->count, 3u);
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EXPECT_EQ(outline_dict->children[0]->title, (char const*)u8"Titlè 1");
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EXPECT_EQ(outline_dict->children[1]->title, (char const*)u8"Titlè 2");
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EXPECT_EQ(outline_dict->children[2]->title, (char const*)u8"Titlè 3");
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}
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TEST_CASE(truncated_pdf_header_issue_10717)
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{
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AK::ByteString string { "%PDF-2.11%" };
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auto document = PDF::Document::create(string.bytes());
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EXPECT(document.is_error());
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}
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TEST_CASE(encrypted_with_aes)
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{
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auto file = MUST(Core::MappedFile::map("password-is-sup.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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EXPECT(document->security_handler()->try_provide_user_password("sup"sv));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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auto info_dict = MUST(document->info_dict()).value();
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EXPECT_EQ(MUST(info_dict.title()).value(), "sup");
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EXPECT_EQ(MUST(info_dict.creator()).value(), "TextEdit");
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}
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TEST_CASE(encrypted_object_stream)
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{
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auto file = MUST(Core::MappedFile::map("encryption_nocopy.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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auto info_dict = MUST(document->info_dict()).value();
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EXPECT_EQ(MUST(info_dict.author()).value(), "van der Knijff");
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EXPECT_EQ(MUST(info_dict.creator()).value(), "Acrobat PDFMaker 9.1 voor Word");
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}
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TEST_CASE(malformed_pdf_document)
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{
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Array test_inputs = {
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"oss-fuzz-testcase-62065.pdf"sv
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};
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for (auto test_input : test_inputs) {
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auto file = MUST(Core::MappedFile::map(test_input));
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auto document_or_error = PDF::Document::create(file->bytes());
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EXPECT(document_or_error.is_error());
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}
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}
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static PDF::Value make_array(Vector<float> floats)
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{
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Vector<PDF::Value> values;
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for (auto f : floats)
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values.append(PDF::Value { f });
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return PDF::Value { make_object<PDF::ArrayObject>(move(values)) };
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}
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static PDF::PDFErrorOr<NonnullRefPtr<PDF::Function>> make_function(int type, ReadonlyBytes data, Vector<float> domain, Vector<float> range, Function<void(HashMap<DeprecatedFlyString, PDF::Value>&)> extra_keys = nullptr)
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{
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HashMap<DeprecatedFlyString, PDF::Value> map;
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map.set(PDF::CommonNames::FunctionType, PDF::Value { type });
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map.set(PDF::CommonNames::Domain, make_array(move(domain)));
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map.set(PDF::CommonNames::Range, make_array(move(range)));
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if (extra_keys)
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extra_keys(map);
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auto dict = make_object<PDF::DictObject>(move(map));
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auto stream = make_object<PDF::StreamObject>(dict, MUST(ByteBuffer::copy(data)));
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// document isn't used for anything, but UBSan complains about a (harmless) method call on a null object without it.
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auto file = MUST(Core::MappedFile::map("linearized.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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return PDF::Function::create(document, stream);
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}
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static PDF::PDFErrorOr<NonnullRefPtr<PDF::Function>> make_sampled_function(ReadonlyBytes data, Vector<float> domain, Vector<float> range, Vector<float> sizes)
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{
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return make_function(0, data, move(domain), move(range), [&sizes](auto& map) {
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map.set(PDF::CommonNames::Size, make_array(sizes));
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map.set(PDF::CommonNames::BitsPerSample, PDF::Value { 8 });
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});
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}
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TEST_CASE(sampled)
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{
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auto f1 = MUST(make_sampled_function(Vector<u8> { { 0, 255, 0 } }, { 0.0f, 1.0f }, { 0.0f, 10.0f }, { 3 }));
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EXPECT_EQ(MUST(f1->evaluate(Vector<float> { 0.0f })), Vector<float> { 0.0f });
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EXPECT_EQ(MUST(f1->evaluate(Vector<float> { 0.25f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f1->evaluate(Vector<float> { 0.5f })), Vector<float> { 10.0f });
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EXPECT_EQ(MUST(f1->evaluate(Vector<float> { 0.75f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f1->evaluate(Vector<float> { 1.0f })), Vector<float> { 0.0f });
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auto f2 = MUST(make_sampled_function(Vector<u8> { { 0, 255, 255, 0, 0, 255 } }, { 0.0f, 1.0f }, { 0.0f, 10.0f, 0.0f, 8.0f }, { 3 }));
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EXPECT_EQ(MUST(f2->evaluate(Vector<float> { 0.0f })), (Vector<float> { 0.0f, 8.0f }));
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EXPECT_EQ(MUST(f2->evaluate(Vector<float> { 0.25f })), (Vector<float> { 5.0f, 4.0f }));
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EXPECT_EQ(MUST(f2->evaluate(Vector<float> { 0.5f })), (Vector<float> { 10.0f, 0.0f }));
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EXPECT_EQ(MUST(f2->evaluate(Vector<float> { 0.75f })), (Vector<float> { 5.0f, 4.0f }));
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EXPECT_EQ(MUST(f2->evaluate(Vector<float> { 1.0f })), (Vector<float> { 0.0f, 8.0f }));
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auto f3 = MUST(make_sampled_function(Vector<u8> { { 0, 255, 0, 255, 0, 255 } }, { 0.0f, 1.0f, 0.0f, 1.0f }, { 0.0f, 10.0f }, { 3, 2 }));
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.0f, 0.0f })), Vector<float> { 0.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.25f, 0.0f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.5f, 0.0f })), Vector<float> { 10.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.75f, 0.0f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 1.0f, 0.0f })), Vector<float> { 0.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.0f, 0.5f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.25f, 0.5f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.5f, 0.5f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.75f, 0.5f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 1.0f, 0.5f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.0f, 1.0f })), Vector<float> { 10.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.25f, 1.0f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.5f, 1.0f })), Vector<float> { 0.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 0.75f, 1.0f })), Vector<float> { 5.0f });
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EXPECT_EQ(MUST(f3->evaluate(Vector<float> { 1.0f, 1.0f })), Vector<float> { 10.0f });
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auto f4 = MUST(make_sampled_function(Vector<u8> { { 0, 255, 255, 0, 0, 255, 255, 0 } }, { 0.0f, 1.0f, 0.0f, 1.0f }, { 0.0f, 10.0f, 0.0f, 8.0f }, { 2, 2 }));
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EXPECT_EQ(MUST(f4->evaluate(Vector<float> { 0.0f, 0.0f })), (Vector<float> { 0.0f, 8.0f }));
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EXPECT_EQ(MUST(f4->evaluate(Vector<float> { 0.5f, 0.5f })), (Vector<float> { 5.0f, 4.0f }));
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}
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static PDF::PDFErrorOr<NonnullRefPtr<PDF::Function>> make_postscript_function(StringView program, Vector<float> domain, Vector<float> range)
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{
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return make_function(4, program.bytes(), move(domain), move(range));
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}
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static NonnullRefPtr<PDF::Function> check_postscript_function(StringView program, Vector<float> domain, Vector<float> range)
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{
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auto function = make_postscript_function(program, move(domain), move(range));
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if (function.is_error())
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FAIL(function.error().message());
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return function.value();
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}
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static void check_evaluate(StringView program, Vector<float> inputs, Vector<float> outputs)
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{
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Vector<float> domain;
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for (size_t i = 0; i < inputs.size(); ++i) {
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domain.append(-100.0f);
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domain.append(100.0f);
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}
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Vector<float> range;
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for (size_t i = 0; i < outputs.size(); ++i) {
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range.append(-100.0f);
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range.append(100.0f);
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}
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auto function = check_postscript_function(program, domain, range);
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auto result = function->evaluate(inputs);
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if (result.is_error())
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FAIL(result.error().message());
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EXPECT_EQ(result.value(), outputs);
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}
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TEST_CASE(postscript)
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{
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// Arithmetic operators
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check_evaluate("{ abs }"sv, { 0.5f }, { 0.5f });
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check_evaluate("{ add }"sv, { 0.25f, 0.5f }, { 0.75f });
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check_evaluate("{ atan }"sv, { 1.0f, 0.01f }, { AK::to_degrees(atan2f(0.01f, 1.0f)) });
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check_evaluate("{ ceiling }"sv, { 0.5f }, { 1.0f });
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check_evaluate("{ cos }"sv, { 1.0f }, { cosf(AK::to_radians(1.0f)) });
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check_evaluate("{ cvi }"sv, { 0.5f }, { 0.0f });
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check_evaluate("{ cvr }"sv, { 0.5f }, { 0.5f });
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check_evaluate("{ div }"sv, { 0.5f, 1.0f }, { 0.5f });
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check_evaluate("{ exp }"sv, { 0.0f }, { 1.0f });
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check_evaluate("{ floor }"sv, { 0.5f }, { 0.0f });
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check_evaluate("{ idiv }"sv, { 0.5f, 1.0f }, { 0.0f });
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check_evaluate("{ ln }"sv, { 10.0f }, { logf(10.0f) });
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check_evaluate("{ log }"sv, { 10.0f }, { log10f(10.0f) });
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check_evaluate("{ mod }"sv, { 0.5f, 0.25f }, { 0.0f });
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check_evaluate("{ mul }"sv, { 0.5f, 0.25f }, { 0.125f });
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check_evaluate("{ neg }"sv, { 0.5f }, { -0.5f });
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check_evaluate("{ round }"sv, { 0.5f }, { 1.0f });
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check_evaluate("{ sin }"sv, { 1.0f }, { sinf(AK::to_radians(1.0f)) });
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check_evaluate("{ sqrt }"sv, { 0.5f }, { sqrtf(0.5f) });
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check_evaluate("{ sub }"sv, { 0.5f, 0.25f }, { 0.25f });
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check_evaluate("{ truncate }"sv, { 0.5f }, { 0.0f });
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// Relational, boolean, and bitwise operators
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check_evaluate("{ and }"sv, { 0.0f, 1.0f }, { 0.0f });
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check_evaluate("{ bitshift }"sv, { 1.0f, 3.0f }, { 8.0f });
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check_evaluate("{ bitshift }"sv, { 8.0f, -2.0f }, { 2.0f });
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check_evaluate("{ eq }"sv, { 0.5f, 0.5f }, { 1.0f });
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check_evaluate("{ ge }"sv, { 0.5f, 0.5f }, { 1.0f });
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check_evaluate("{ gt }"sv, { 0.5f, 0.5f }, { 0.0f });
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check_evaluate("{ le }"sv, { 0.5f, 0.5f }, { 1.0f });
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check_evaluate("{ lt }"sv, { 0.5f, 0.5f }, { 0.0f });
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check_evaluate("{ ne }"sv, { 0.5f, 0.5f }, { 0.0f });
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check_evaluate("{ not }"sv, { 0.5f }, { 0.0f });
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check_evaluate("{ or }"sv, { 0.0f, 1.0f }, { 1.0f });
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check_evaluate("{ xor }"sv, { 0.0f, 1.0f }, { 1.0f });
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// Conditional operators
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check_evaluate("{ { 4 } if }"sv, { 1.0f }, { 4.0f });
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check_evaluate("{ { 4 } if }"sv, { 0.0f }, {});
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check_evaluate("{ { 4 } { 5 } ifelse }"sv, { 1.0f }, { 4.0f });
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check_evaluate("{ { 4 } { 5 } ifelse }"sv, { 0.0f }, { 5.0f });
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// Stack operators
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check_evaluate("{ 2 copy }"sv, { 8.0f, 0.5f, 1.0f }, { 8.0f, 0.5f, 1.0f, 0.5f, 1.0f });
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check_evaluate("{ dup }"sv, { 1.0f, 0.5f }, { 1.0f, 0.5f, 0.5f });
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check_evaluate("{ exch }"sv, { 8.0f, 1.0f, 0.5f }, { 8.0f, 0.5f, 1.0f });
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check_evaluate("{ 1 index }"sv, { 8.0f, 1.0f, 0.5f }, { 8.0f, 1.0f, 0.5f, 1.0f });
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check_evaluate("{ pop }"sv, { 8.0f, 1.0f, 0.5f }, { 8.0f, 1.0f });
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check_evaluate("{ 3 1 roll }"sv, { 0.5f, 1.0f, 2.0f }, { 2.0f, 0.5f, 1.0f });
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check_evaluate("{ 3 -1 roll }"sv, { 0.5f, 1.0f, 2.0f }, { 1.0f, 2.0f, 0.5f });
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}
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TEST_CASE(render)
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{
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auto file = MUST(Core::MappedFile::map("colorspaces.pdf"sv));
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auto document = MUST(PDF::Document::create(file->bytes()));
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MUST(document->initialize());
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EXPECT_EQ(document->get_page_count(), 1U);
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auto page = MUST(document->get_page(0));
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auto page_size = Gfx::IntSize { 310, 370 };
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auto bitmap = MUST(Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, page_size));
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MUST(PDF::Renderer::render(document, page, bitmap, Color::White, PDF::RenderingPreferences {}));
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// DeviceGray
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EXPECT_EQ(bitmap->get_pixel(270, 370 - 20), Gfx::Color::NamedColor::Black);
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// MyCalRGB
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EXPECT_EQ(bitmap->get_pixel(270, 370 - 80), Gfx::Color::NamedColor::Black);
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// DeviceRGB
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EXPECT_EQ(bitmap->get_pixel(270, 370 - 140), Gfx::Color::NamedColor::Black);
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// DeviceCMYK (note: black one box further left)
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EXPECT_EQ(bitmap->get_pixel(220, 370 - 200), Gfx::Color::NamedColor::Black);
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// MyLab
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EXPECT_EQ(bitmap->get_pixel(270, 370 - 260), Gfx::Color::NamedColor::Black);
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// MyCalGray
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EXPECT_EQ(bitmap->get_pixel(270, 370 - 320), Gfx::Color::NamedColor::Black);
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}
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