tests/PDFPrimitivesTest.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkFlate.h"
 #include "SkImageEncoder.h"
 #include "SkMatrix.h"
 #include "SkPDFCatalog.h"
 #include "SkPDFDevice.h"
 #include "SkPDFStream.h"
 #include "SkPDFTypes.h"
 #include "SkReadBuffer.h"
 #include "SkScalar.h"
 #include "SkStream.h"
 #include "SkTypes.h"
 #include "Test.h"

 class SkPDFTestDict : public SkPDFDict {
 public:
   virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
                             SkTSet<SkPDFObject*>* newResourceObjects) {
         for (int i = 0; i < fResources.count(); i++) {
             newResourceObjects->add(fResources[i]);
             fResources[i]->ref();
         }
     }

     void addResource(SkPDFObject* object) {
         fResources.append(1, &object);
     }

 private:
     SkTDArray<SkPDFObject*> fResources;
 };

 #define DUMMY_TEXT "DCT compessed stream."

 static SkData* encode_to_dct_data(size_t* pixelRefOffset, const SkBitmap& bitmap) {
     *pixelRefOffset = 0;
     return SkData::NewWithProc(DUMMY_TEXT, sizeof(DUMMY_TEXT) - 1, NULL, NULL);
 }

 static bool stream_equals(const SkDynamicMemoryWStream& stream, size_t offset,
                           const void* buffer, size_t len) {
     SkAutoDataUnref data(stream.copyToData());
     if (offset + len > data->size()) {
         return false;
     }
     return memcmp(data->bytes() + offset, buffer, len) == 0;
 }

 static bool stream_contains(const SkDynamicMemoryWStream& stream,
                             const char* buffer) {
     SkAutoDataUnref data(stream.copyToData());
     size_t len = strlen(buffer);  // our buffer does not have EOSs.

     for (size_t offset = 0 ; offset < data->size() - len; offset++) {
         if (memcmp(data->bytes() + offset, buffer, len) == 0) {
             return true;
         }
     }

     return false;
 }

 static void CheckObjectOutput(skiatest::Reporter* reporter, SkPDFObject* obj,
                               const char* expectedData, size_t expectedSize,
                               bool indirect, bool compression) {
     SkPDFDocument::Flags docFlags = (SkPDFDocument::Flags) 0;
     if (!compression) {
         docFlags = SkTBitOr(docFlags, SkPDFDocument::kFavorSpeedOverSize_Flags);
     }
     SkPDFCatalog catalog(docFlags);
     size_t directSize = obj->getOutputSize(&catalog, false);
     REPORTER_ASSERT(reporter, directSize == expectedSize);

     SkDynamicMemoryWStream buffer;
     obj->emit(&buffer, &catalog, false);
     REPORTER_ASSERT(reporter, directSize == buffer.getOffset());
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedData,
                                             directSize));

     if (indirect) {
         // Indirect output.
         static char header[] = "1 0 obj\n";
         static size_t headerLen = strlen(header);
         static char footer[] = "\nendobj\n";
         static size_t footerLen = strlen(footer);

         catalog.addObject(obj, false);

         size_t indirectSize = obj->getOutputSize(&catalog, true);
         REPORTER_ASSERT(reporter,
                         indirectSize == directSize + headerLen + footerLen);

         buffer.reset();
         obj->emit(&buffer, &catalog, true);
         REPORTER_ASSERT(reporter, indirectSize == buffer.getOffset());
         REPORTER_ASSERT(reporter, stream_equals(buffer, 0, header, headerLen));
         REPORTER_ASSERT(reporter, stream_equals(buffer, headerLen, expectedData,
                                                 directSize));
         REPORTER_ASSERT(reporter, stream_equals(buffer, headerLen + directSize,
                                                 footer, footerLen));
     }
 }

 static void SimpleCheckObjectOutput(skiatest::Reporter* reporter,
                                     SkPDFObject* obj,
                                     const char* expectedResult) {
     CheckObjectOutput(reporter, obj, expectedResult,
                       strlen(expectedResult), true, false);
 }

 static void TestPDFStream(skiatest::Reporter* reporter) {
     char streamBytes[] = "Test\nFoo\tBar";
     SkAutoTDelete<SkMemoryStream> streamData(new SkMemoryStream(
         streamBytes, strlen(streamBytes), true));
     SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData.get()));
     SimpleCheckObjectOutput(
         reporter, stream.get(),
         "<</Length 12\n>> stream\nTest\nFoo\tBar\nendstream");
     stream->insert("Attribute", new SkPDFInt(42))->unref();
     SimpleCheckObjectOutput(reporter, stream.get(),
                             "<</Length 12\n/Attribute 42\n>> stream\n"
                                 "Test\nFoo\tBar\nendstream");

     if (SkFlate::HaveFlate()) {
         char streamBytes2[] = "This is a longer string, so that compression "
                               "can do something with it. With shorter strings, "
                               "the short circuit logic cuts in and we end up "
                               "with an uncompressed string.";
         SkAutoDataUnref streamData2(SkData::NewWithCopy(streamBytes2,
                                                         strlen(streamBytes2)));
         SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData2.get()));

         SkDynamicMemoryWStream compressedByteStream;
         SkFlate::Deflate(streamData2.get(), &compressedByteStream);
         SkAutoDataUnref compressedData(compressedByteStream.copyToData());

         // Check first without compression.
         SkDynamicMemoryWStream expectedResult1;
         expectedResult1.writeText("<</Length 167\n>> stream\n");
         expectedResult1.writeText(streamBytes2);
         expectedResult1.writeText("\nendstream");
         SkAutoDataUnref expectedResultData1(expectedResult1.copyToData());
         CheckObjectOutput(reporter, stream.get(),
                           (const char*) expectedResultData1->data(),
                           expectedResultData1->size(), true, false);

         // Then again with compression.
         SkDynamicMemoryWStream expectedResult2;
         expectedResult2.writeText("<</Filter /FlateDecode\n/Length 116\n"
                                  ">> stream\n");
         expectedResult2.write(compressedData->data(), compressedData->size());
         expectedResult2.writeText("\nendstream");
         SkAutoDataUnref expectedResultData2(expectedResult2.copyToData());
         CheckObjectOutput(reporter, stream.get(),
                           (const char*) expectedResultData2->data(),
                           expectedResultData2->size(), true, true);
     }
 }

 static void TestCatalog(skiatest::Reporter* reporter) {
     SkPDFCatalog catalog((SkPDFDocument::Flags)0);
     SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
     SkAutoTUnref<SkPDFInt> int2(new SkPDFInt(2));
     SkAutoTUnref<SkPDFInt> int3(new SkPDFInt(3));
     int1.get()->ref();
     SkAutoTUnref<SkPDFInt> int1Again(int1.get());

     catalog.addObject(int1.get(), false);
     catalog.addObject(int2.get(), false);
     catalog.addObject(int3.get(), false);

     REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int1.get()) == 3);
     REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int2.get()) == 3);
     REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int3.get()) == 3);

     SkDynamicMemoryWStream buffer;
     catalog.emitObjectNumber(&buffer, int1.get());
     catalog.emitObjectNumber(&buffer, int2.get());
     catalog.emitObjectNumber(&buffer, int3.get());
     catalog.emitObjectNumber(&buffer, int1Again.get());
     char expectedResult[] = "1 02 03 01 0";
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
                                             strlen(expectedResult)));
 }

 static void TestObjectRef(skiatest::Reporter* reporter) {
     SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
     SkAutoTUnref<SkPDFInt> int2(new SkPDFInt(2));
     SkAutoTUnref<SkPDFObjRef> int2ref(new SkPDFObjRef(int2.get()));

     SkPDFCatalog catalog((SkPDFDocument::Flags)0);
     catalog.addObject(int1.get(), false);
     catalog.addObject(int2.get(), false);
     REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int1.get()) == 3);
     REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int2.get()) == 3);

     char expectedResult[] = "2 0 R";
     SkDynamicMemoryWStream buffer;
     int2ref->emitObject(&buffer, &catalog);
     REPORTER_ASSERT(reporter, buffer.getOffset() == strlen(expectedResult));
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
                                             buffer.getOffset()));
 }

 static void TestSubstitute(skiatest::Reporter* reporter) {
     SkAutoTUnref<SkPDFTestDict> proxy(new SkPDFTestDict());
     SkAutoTUnref<SkPDFTestDict> stub(new SkPDFTestDict());
     SkAutoTUnref<SkPDFInt> int33(new SkPDFInt(33));
     SkAutoTUnref<SkPDFDict> stubResource(new SkPDFDict());
     SkAutoTUnref<SkPDFInt> int44(new SkPDFInt(44));

     stub->insert("Value", int33.get());
     stubResource->insert("InnerValue", int44.get());
     stub->addResource(stubResource.get());

     SkPDFCatalog catalog((SkPDFDocument::Flags)0);
     catalog.addObject(proxy.get(), false);
     catalog.setSubstitute(proxy.get(), stub.get());

     SkDynamicMemoryWStream buffer;
     proxy->emit(&buffer, &catalog, false);
     SkTSet<SkPDFObject*>* substituteResources =
             catalog.getSubstituteList(false);
     for (int i = 0; i < substituteResources->count(); ++i) {
         (*substituteResources)[i]->emit(&buffer, &catalog, true);
     }

     char objectResult[] = "2 0 obj\n<</Value 33\n>>\nendobj\n";
     catalog.setFileOffset(proxy.get(), 0);

     size_t outputSize = catalog.getSubstituteObject(proxy.get())
                                 ->getOutputSize(&catalog, true);
     REPORTER_ASSERT(reporter, outputSize == strlen(objectResult));

     char expectedResult[] =
         "<</Value 33\n>>1 0 obj\n<</InnerValue 44\n>>\nendobj\n";
     REPORTER_ASSERT(reporter, buffer.getOffset() == strlen(expectedResult));
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
                                             buffer.getOffset()));
 }

 // Create a bitmap that would be very eficiently compressed in a ZIP.
 static void setup_bitmap(SkBitmap* bitmap, int width, int height) {
     bitmap->allocN32Pixels(width, height);
     bitmap->eraseColor(SK_ColorWHITE);
 }

 static void TestImage(skiatest::Reporter* reporter, const SkBitmap& bitmap,
                       const char* expected, bool useDCTEncoder) {
     SkISize pageSize = SkISize::Make(bitmap.width(), bitmap.height());
     SkAutoTUnref<SkPDFDevice> dev(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));

     if (useDCTEncoder) {
         dev->setDCTEncoder(encode_to_dct_data);
     }

     SkCanvas c(dev);
     c.drawBitmap(bitmap, 0, 0, NULL);

     SkPDFDocument doc;
     doc.appendPage(dev);

     SkDynamicMemoryWStream stream;
     doc.emitPDF(&stream);

     REPORTER_ASSERT(reporter, stream_contains(stream, expected));
 }

 static void TestUncompressed(skiatest::Reporter* reporter) {
     SkBitmap bitmap;
     setup_bitmap(&bitmap, 1, 1);
     TestImage(reporter, bitmap,
               "/Subtype /Image\n"
               "/Width 1\n"
               "/Height 1\n"
               "/ColorSpace /DeviceRGB\n"
               "/BitsPerComponent 8\n"
               "/Length 3\n"
               ">> stream",
               true);
 }

 static void TestFlateDecode(skiatest::Reporter* reporter) {
     if (!SkFlate::HaveFlate()) {
         return;
     }
     SkBitmap bitmap;
     setup_bitmap(&bitmap, 10, 10);
     TestImage(reporter, bitmap,
               "/Subtype /Image\n"
               "/Width 10\n"
               "/Height 10\n"
               "/ColorSpace /DeviceRGB\n"
               "/BitsPerComponent 8\n"
               "/Filter /FlateDecode\n"
               "/Length 13\n"
               ">> stream",
               false);
 }

 static void TestDCTDecode(skiatest::Reporter* reporter) {
     SkBitmap bitmap;
     setup_bitmap(&bitmap, 32, 32);
     TestImage(reporter, bitmap,
               "/Subtype /Image\n"
               "/Width 32\n"
               "/Height 32\n"
               "/ColorSpace /DeviceRGB\n"
               "/BitsPerComponent 8\n"
               "/Filter /DCTDecode\n"
               "/ColorTransform 0\n"
               "/Length 21\n"
               ">> stream",
               true);
 }

 static void TestImages(skiatest::Reporter* reporter) {
     TestUncompressed(reporter);
     TestFlateDecode(reporter);
     TestDCTDecode(reporter);
 }

 // This test used to assert without the fix submitted for
 // http://code.google.com/p/skia/issues/detail?id=1083.
 // SKP files might have invalid glyph ids. This test ensures they are ignored,
 // and there is no assert on input data in Debug mode.
 static void test_issue1083() {
     SkISize pageSize = SkISize::Make(100, 100);
     SkAutoTUnref<SkPDFDevice> dev(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));

     SkCanvas c(dev);
     SkPaint paint;
     paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);

     uint16_t glyphID = 65000;
     c.drawText(&glyphID, 2, 0, 0, paint);

     SkPDFDocument doc;
     doc.appendPage(dev);

     SkDynamicMemoryWStream stream;
     doc.emitPDF(&stream);
 }

 DEF_TEST(PDFPrimitives, reporter) {
     SkAutoTUnref<SkPDFInt> int42(new SkPDFInt(42));
     SimpleCheckObjectOutput(reporter, int42.get(), "42");

     SkAutoTUnref<SkPDFScalar> realHalf(new SkPDFScalar(SK_ScalarHalf));
     SimpleCheckObjectOutput(reporter, realHalf.get(), "0.5");

     SkAutoTUnref<SkPDFScalar> bigScalar(new SkPDFScalar(110999.75f));
 #if !defined(SK_ALLOW_LARGE_PDF_SCALARS)
     SimpleCheckObjectOutput(reporter, bigScalar.get(), "111000");
 #else
     SimpleCheckObjectOutput(reporter, bigScalar.get(), "110999.75");

     SkAutoTUnref<SkPDFScalar> biggerScalar(new SkPDFScalar(50000000.1));
     SimpleCheckObjectOutput(reporter, biggerScalar.get(), "50000000");

     SkAutoTUnref<SkPDFScalar> smallestScalar(new SkPDFScalar(1.0/65536));
     SimpleCheckObjectOutput(reporter, smallestScalar.get(), "0.00001526");
 #endif

     SkAutoTUnref<SkPDFString> stringSimple(
         new SkPDFString("test ) string ( foo"));
     SimpleCheckObjectOutput(reporter, stringSimple.get(),
                             "(test \\) string \\( foo)");
     SkAutoTUnref<SkPDFString> stringComplex(
         new SkPDFString("\ttest ) string ( foo"));
     SimpleCheckObjectOutput(reporter, stringComplex.get(),
                             "<0974657374202920737472696E67202820666F6F>");

     SkAutoTUnref<SkPDFName> name(new SkPDFName("Test name\twith#tab"));
     const char expectedResult[] = "/Test#20name#09with#23tab";
     CheckObjectOutput(reporter, name.get(), expectedResult,
                       strlen(expectedResult), false, false);

     SkAutoTUnref<SkPDFName> escapedName(new SkPDFName("A#/%()<>[]{}B"));
     const char escapedNameExpected[] = "/A#23#2F#25#28#29#3C#3E#5B#5D#7B#7DB";
     CheckObjectOutput(reporter, escapedName.get(), escapedNameExpected,
                       strlen(escapedNameExpected), false, false);

     // Test that we correctly handle characters with the high-bit set.
     const unsigned char highBitCString[] = {0xDE, 0xAD, 'b', 'e', 0xEF, 0};
     SkAutoTUnref<SkPDFName> highBitName(
         new SkPDFName((const char*)highBitCString));
     const char highBitExpectedResult[] = "/#DE#ADbe#EF";
     CheckObjectOutput(reporter, highBitName.get(), highBitExpectedResult,
                       strlen(highBitExpectedResult), false, false);

     SkAutoTUnref<SkPDFArray> array(new SkPDFArray);
     SimpleCheckObjectOutput(reporter, array.get(), "[]");
     array->append(int42.get());
     SimpleCheckObjectOutput(reporter, array.get(), "[42]");
     array->append(realHalf.get());
     SimpleCheckObjectOutput(reporter, array.get(), "[42 0.5]");
     SkAutoTUnref<SkPDFInt> int0(new SkPDFInt(0));
     array->append(int0.get());
     SimpleCheckObjectOutput(reporter, array.get(), "[42 0.5 0]");
     SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
     array->setAt(0, int1.get());
     SimpleCheckObjectOutput(reporter, array.get(), "[1 0.5 0]");

     SkAutoTUnref<SkPDFDict> dict(new SkPDFDict);
     SimpleCheckObjectOutput(reporter, dict.get(), "<<>>");
     SkAutoTUnref<SkPDFName> n1(new SkPDFName("n1"));
     dict->insert(n1.get(), int42.get());
     SimpleCheckObjectOutput(reporter, dict.get(), "<</n1 42\n>>");
     SkAutoTUnref<SkPDFName> n2(new SkPDFName("n2"));
     SkAutoTUnref<SkPDFName> n3(new SkPDFName("n3"));
     dict->insert(n2.get(), realHalf.get());
     dict->insert(n3.get(), array.get());
     SimpleCheckObjectOutput(reporter, dict.get(),
                             "<</n1 42\n/n2 0.5\n/n3 [1 0.5 0]\n>>");

     TestPDFStream(reporter);

     TestCatalog(reporter);

     TestObjectRef(reporter);

     TestSubstitute(reporter);

     test_issue1083();

     TestImages(reporter);
 }

 namespace {

 class DummyImageFilter : public SkImageFilter {
 public:
     DummyImageFilter(bool visited = false) : SkImageFilter(0, NULL), fVisited(visited) {}
     ~DummyImageFilter() SK_OVERRIDE {}
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const {
         fVisited = true;
         offset->fX = offset->fY = 0;
         *result = src;
         return true;
     }
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter)
     bool visited() const { return fVisited; }

 private:
     mutable bool fVisited;
 };

 SkFlattenable* DummyImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
     bool visited = buffer.readBool();
     return SkNEW_ARGS(DummyImageFilter, (visited));
 }

 #ifndef SK_IGNORE_TO_STRING
 void DummyImageFilter::toString(SkString* str) const {
     str->appendf("DummyImageFilter: (");
     str->append(")");
 }
 #endif

 };

 // Check that PDF rendering of image filters successfully falls back to
 // CPU rasterization.
 DEF_TEST(PDFImageFilter, reporter) {
     SkISize pageSize = SkISize::Make(100, 100);
     SkAutoTUnref<SkPDFDevice> device(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));
     SkCanvas canvas(device.get());
     SkAutoTUnref<DummyImageFilter> filter(new DummyImageFilter());

     // Filter just created; should be unvisited.
     REPORTER_ASSERT(reporter, !filter->visited());
     SkPaint paint;
     paint.setImageFilter(filter.get());
     canvas.drawRect(SkRect::MakeWH(100, 100), paint);

     // Filter was used in rendering; should be visited.
     REPORTER_ASSERT(reporter, filter->visited());
 }
	/*
	* Copyright 2010 The Android Open Source Project
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "SkBitmap.h"
	#include "SkCanvas.h"
	#include "SkData.h"
	#include "SkFlate.h"
	#include "SkImageEncoder.h"
	#include "SkMatrix.h"
	#include "SkPDFCatalog.h"
	#include "SkPDFDevice.h"
	#include "SkPDFStream.h"
	#include "SkPDFTypes.h"
	#include "SkReadBuffer.h"
	#include "SkScalar.h"
	#include "SkStream.h"
	#include "SkTypes.h"
	#include "Test.h"

	class SkPDFTestDict : public SkPDFDict {
	public:
	virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
	SkTSet<SkPDFObject> newResourceObjects) {
	for (int i = 0; i < fResources.count(); i++) {
	newResourceObjects->add(fResources[i]);
	fResources[i]->ref();
	}
	}

	void addResource(SkPDFObject* object) {
	fResources.append(1, &object);
	}

	private:
	SkTDArray<SkPDFObject*> fResources;
	};

	#define DUMMY_TEXT "DCT compessed stream."

	static SkData* encode_to_dct_data(size_t* pixelRefOffset, const SkBitmap& bitmap) {
	*pixelRefOffset = 0;
	return SkData::NewWithProc(DUMMY_TEXT, sizeof(DUMMY_TEXT) - 1, NULL, NULL);
	}

	static bool stream_equals(const SkDynamicMemoryWStream& stream, size_t offset,
	const void* buffer, size_t len) {
	SkAutoDataUnref data(stream.copyToData());
	if (offset + len > data->size()) {
	return false;
	}
	return memcmp(data->bytes() + offset, buffer, len) == 0;
	}

	static bool stream_contains(const SkDynamicMemoryWStream& stream,
	const char* buffer) {
	SkAutoDataUnref data(stream.copyToData());
	size_t len = strlen(buffer); // our buffer does not have EOSs.

	for (size_t offset = 0 ; offset < data->size() - len; offset++) {
	if (memcmp(data->bytes() + offset, buffer, len) == 0) {
	return true;
	}
	}

	return false;
	}

	static void CheckObjectOutput(skiatest::Reporter* reporter, SkPDFObject* obj,
	const char* expectedData, size_t expectedSize,
	bool indirect, bool compression) {
	SkPDFDocument::Flags docFlags = (SkPDFDocument::Flags) 0;
	if (!compression) {
	docFlags = SkTBitOr(docFlags, SkPDFDocument::kFavorSpeedOverSize_Flags);
	}
	SkPDFCatalog catalog(docFlags);
	size_t directSize = obj->getOutputSize(&catalog, false);
	REPORTER_ASSERT(reporter, directSize == expectedSize);

	SkDynamicMemoryWStream buffer;
	obj->emit(&buffer, &catalog, false);
	REPORTER_ASSERT(reporter, directSize == buffer.getOffset());
	REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedData,
	directSize));

	if (indirect) {
	// Indirect output.
	static char header[] = "1 0 obj\n";
	static size_t headerLen = strlen(header);
	static char footer[] = "\nendobj\n";
	static size_t footerLen = strlen(footer);

	catalog.addObject(obj, false);

	size_t indirectSize = obj->getOutputSize(&catalog, true);
	REPORTER_ASSERT(reporter,
	indirectSize == directSize + headerLen + footerLen);

	buffer.reset();
	obj->emit(&buffer, &catalog, true);
	REPORTER_ASSERT(reporter, indirectSize == buffer.getOffset());
	REPORTER_ASSERT(reporter, stream_equals(buffer, 0, header, headerLen));
	REPORTER_ASSERT(reporter, stream_equals(buffer, headerLen, expectedData,
	directSize));
	REPORTER_ASSERT(reporter, stream_equals(buffer, headerLen + directSize,
	footer, footerLen));
	}
	}

	static void SimpleCheckObjectOutput(skiatest::Reporter* reporter,
	SkPDFObject* obj,
	const char* expectedResult) {
	CheckObjectOutput(reporter, obj, expectedResult,
	strlen(expectedResult), true, false);
	}

	static void TestPDFStream(skiatest::Reporter* reporter) {
	char streamBytes[] = "Test\nFoo\tBar";
	SkAutoTDelete<SkMemoryStream> streamData(new SkMemoryStream(
	streamBytes, strlen(streamBytes), true));
	SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData.get()));
	SimpleCheckObjectOutput(
	reporter, stream.get(),
	"<</Length 12\n>> stream\nTest\nFoo\tBar\nendstream");
	stream->insert("Attribute", new SkPDFInt(42))->unref();
	SimpleCheckObjectOutput(reporter, stream.get(),
	"<</Length 12\n/Attribute 42\n>> stream\n"
	"Test\nFoo\tBar\nendstream");

	if (SkFlate::HaveFlate()) {
	char streamBytes2[] = "This is a longer string, so that compression "
	"can do something with it. With shorter strings, "
	"the short circuit logic cuts in and we end up "
	"with an uncompressed string.";
	SkAutoDataUnref streamData2(SkData::NewWithCopy(streamBytes2,
	strlen(streamBytes2)));
	SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData2.get()));

	SkDynamicMemoryWStream compressedByteStream;
	SkFlate::Deflate(streamData2.get(), &compressedByteStream);
	SkAutoDataUnref compressedData(compressedByteStream.copyToData());

	// Check first without compression.
	SkDynamicMemoryWStream expectedResult1;
	expectedResult1.writeText("<</Length 167\n>> stream\n");
	expectedResult1.writeText(streamBytes2);
	expectedResult1.writeText("\nendstream");
	SkAutoDataUnref expectedResultData1(expectedResult1.copyToData());
	CheckObjectOutput(reporter, stream.get(),
	(const char*) expectedResultData1->data(),
	expectedResultData1->size(), true, false);

	// Then again with compression.
	SkDynamicMemoryWStream expectedResult2;
	expectedResult2.writeText("<</Filter /FlateDecode\n/Length 116\n"
	">> stream\n");
	expectedResult2.write(compressedData->data(), compressedData->size());
	expectedResult2.writeText("\nendstream");
	SkAutoDataUnref expectedResultData2(expectedResult2.copyToData());
	CheckObjectOutput(reporter, stream.get(),
	(const char*) expectedResultData2->data(),
	expectedResultData2->size(), true, true);
	}
	}

	static void TestCatalog(skiatest::Reporter* reporter) {
	SkPDFCatalog catalog((SkPDFDocument::Flags)0);
	SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
	SkAutoTUnref<SkPDFInt> int2(new SkPDFInt(2));
	SkAutoTUnref<SkPDFInt> int3(new SkPDFInt(3));
	int1.get()->ref();
	SkAutoTUnref<SkPDFInt> int1Again(int1.get());

	catalog.addObject(int1.get(), false);
	catalog.addObject(int2.get(), false);
	catalog.addObject(int3.get(), false);

	REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int1.get()) == 3);
	REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int2.get()) == 3);
	REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int3.get()) == 3);

	SkDynamicMemoryWStream buffer;
	catalog.emitObjectNumber(&buffer, int1.get());
	catalog.emitObjectNumber(&buffer, int2.get());
	catalog.emitObjectNumber(&buffer, int3.get());
	catalog.emitObjectNumber(&buffer, int1Again.get());
	char expectedResult[] = "1 02 03 01 0";
	REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
	strlen(expectedResult)));
	}

	static void TestObjectRef(skiatest::Reporter* reporter) {
	SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
	SkAutoTUnref<SkPDFInt> int2(new SkPDFInt(2));
	SkAutoTUnref<SkPDFObjRef> int2ref(new SkPDFObjRef(int2.get()));

	SkPDFCatalog catalog((SkPDFDocument::Flags)0);
	catalog.addObject(int1.get(), false);
	catalog.addObject(int2.get(), false);
	REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int1.get()) == 3);
	REPORTER_ASSERT(reporter, catalog.getObjectNumberSize(int2.get()) == 3);

	char expectedResult[] = "2 0 R";
	SkDynamicMemoryWStream buffer;
	int2ref->emitObject(&buffer, &catalog);
	REPORTER_ASSERT(reporter, buffer.getOffset() == strlen(expectedResult));
	REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
	buffer.getOffset()));
	}

	static void TestSubstitute(skiatest::Reporter* reporter) {
	SkAutoTUnref<SkPDFTestDict> proxy(new SkPDFTestDict());
	SkAutoTUnref<SkPDFTestDict> stub(new SkPDFTestDict());
	SkAutoTUnref<SkPDFInt> int33(new SkPDFInt(33));
	SkAutoTUnref<SkPDFDict> stubResource(new SkPDFDict());
	SkAutoTUnref<SkPDFInt> int44(new SkPDFInt(44));

	stub->insert("Value", int33.get());
	stubResource->insert("InnerValue", int44.get());
	stub->addResource(stubResource.get());

	SkPDFCatalog catalog((SkPDFDocument::Flags)0);
	catalog.addObject(proxy.get(), false);
	catalog.setSubstitute(proxy.get(), stub.get());

	SkDynamicMemoryWStream buffer;
	proxy->emit(&buffer, &catalog, false);
	SkTSet<SkPDFObject> substituteResources =
	catalog.getSubstituteList(false);
	for (int i = 0; i < substituteResources->count(); ++i) {
	(*substituteResources)[i]->emit(&buffer, &catalog, true);
	}

	char objectResult[] = "2 0 obj\n<</Value 33\n>>\nendobj\n";
	catalog.setFileOffset(proxy.get(), 0);

	size_t outputSize = catalog.getSubstituteObject(proxy.get())
	->getOutputSize(&catalog, true);
	REPORTER_ASSERT(reporter, outputSize == strlen(objectResult));

	char expectedResult[] =
	"<</Value 33\n>>1 0 obj\n<</InnerValue 44\n>>\nendobj\n";
	REPORTER_ASSERT(reporter, buffer.getOffset() == strlen(expectedResult));
	REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
	buffer.getOffset()));
	}

	// Create a bitmap that would be very eficiently compressed in a ZIP.
	static void setup_bitmap(SkBitmap* bitmap, int width, int height) {
	bitmap->allocN32Pixels(width, height);
	bitmap->eraseColor(SK_ColorWHITE);
	}

	static void TestImage(skiatest::Reporter* reporter, const SkBitmap& bitmap,
	const char* expected, bool useDCTEncoder) {
	SkISize pageSize = SkISize::Make(bitmap.width(), bitmap.height());
	SkAutoTUnref<SkPDFDevice> dev(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));

	if (useDCTEncoder) {
	dev->setDCTEncoder(encode_to_dct_data);
	}

	SkCanvas c(dev);
	c.drawBitmap(bitmap, 0, 0, NULL);

	SkPDFDocument doc;
	doc.appendPage(dev);

	SkDynamicMemoryWStream stream;
	doc.emitPDF(&stream);

	REPORTER_ASSERT(reporter, stream_contains(stream, expected));
	}

	static void TestUncompressed(skiatest::Reporter* reporter) {
	SkBitmap bitmap;
	setup_bitmap(&bitmap, 1, 1);
	TestImage(reporter, bitmap,
	"/Subtype /Image\n"
	"/Width 1\n"
	"/Height 1\n"
	"/ColorSpace /DeviceRGB\n"
	"/BitsPerComponent 8\n"
	"/Length 3\n"
	">> stream",
	true);
	}

	static void TestFlateDecode(skiatest::Reporter* reporter) {
	if (!SkFlate::HaveFlate()) {
	return;
	}
	SkBitmap bitmap;
	setup_bitmap(&bitmap, 10, 10);
	TestImage(reporter, bitmap,
	"/Subtype /Image\n"
	"/Width 10\n"
	"/Height 10\n"
	"/ColorSpace /DeviceRGB\n"
	"/BitsPerComponent 8\n"
	"/Filter /FlateDecode\n"
	"/Length 13\n"
	">> stream",
	false);
	}

	static void TestDCTDecode(skiatest::Reporter* reporter) {
	SkBitmap bitmap;
	setup_bitmap(&bitmap, 32, 32);
	TestImage(reporter, bitmap,
	"/Subtype /Image\n"
	"/Width 32\n"
	"/Height 32\n"
	"/ColorSpace /DeviceRGB\n"
	"/BitsPerComponent 8\n"
	"/Filter /DCTDecode\n"
	"/ColorTransform 0\n"
	"/Length 21\n"
	">> stream",
	true);
	}

	static void TestImages(skiatest::Reporter* reporter) {
	TestUncompressed(reporter);
	TestFlateDecode(reporter);
	TestDCTDecode(reporter);
	}

	// This test used to assert without the fix submitted for
	// http://code.google.com/p/skia/issues/detail?id=1083.
	// SKP files might have invalid glyph ids. This test ensures they are ignored,
	// and there is no assert on input data in Debug mode.
	static void test_issue1083() {
	SkISize pageSize = SkISize::Make(100, 100);
	SkAutoTUnref<SkPDFDevice> dev(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));

	SkCanvas c(dev);
	SkPaint paint;
	paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);

	uint16_t glyphID = 65000;
	c.drawText(&glyphID, 2, 0, 0, paint);

	SkPDFDocument doc;
	doc.appendPage(dev);

	SkDynamicMemoryWStream stream;
	doc.emitPDF(&stream);
	}

	DEF_TEST(PDFPrimitives, reporter) {
	SkAutoTUnref<SkPDFInt> int42(new SkPDFInt(42));
	SimpleCheckObjectOutput(reporter, int42.get(), "42");

	SkAutoTUnref<SkPDFScalar> realHalf(new SkPDFScalar(SK_ScalarHalf));
	SimpleCheckObjectOutput(reporter, realHalf.get(), "0.5");

	SkAutoTUnref<SkPDFScalar> bigScalar(new SkPDFScalar(110999.75f));
	#if !defined(SK_ALLOW_LARGE_PDF_SCALARS)
	SimpleCheckObjectOutput(reporter, bigScalar.get(), "111000");
	#else
	SimpleCheckObjectOutput(reporter, bigScalar.get(), "110999.75");

	SkAutoTUnref<SkPDFScalar> biggerScalar(new SkPDFScalar(50000000.1));
	SimpleCheckObjectOutput(reporter, biggerScalar.get(), "50000000");

	SkAutoTUnref<SkPDFScalar> smallestScalar(new SkPDFScalar(1.0/65536));
	SimpleCheckObjectOutput(reporter, smallestScalar.get(), "0.00001526");
	#endif

	SkAutoTUnref<SkPDFString> stringSimple(
	new SkPDFString("test ) string ( foo"));
	SimpleCheckObjectOutput(reporter, stringSimple.get(),
	"(test \\) string \\( foo)");
	SkAutoTUnref<SkPDFString> stringComplex(
	new SkPDFString("\ttest ) string ( foo"));
	SimpleCheckObjectOutput(reporter, stringComplex.get(),
	"<0974657374202920737472696E67202820666F6F>");

	SkAutoTUnref<SkPDFName> name(new SkPDFName("Test name\twith#tab"));
	const char expectedResult[] = "/Test#20name#09with#23tab";
	CheckObjectOutput(reporter, name.get(), expectedResult,
	strlen(expectedResult), false, false);

	SkAutoTUnref<SkPDFName> escapedName(new SkPDFName("A#/%()<>[]{}B"));
	const char escapedNameExpected[] = "/A#23#2F#25#28#29#3C#3E#5B#5D#7B#7DB";
	CheckObjectOutput(reporter, escapedName.get(), escapedNameExpected,
	strlen(escapedNameExpected), false, false);

	// Test that we correctly handle characters with the high-bit set.
	const unsigned char highBitCString[] = {0xDE, 0xAD, 'b', 'e', 0xEF, 0};
	SkAutoTUnref<SkPDFName> highBitName(
	new SkPDFName((const char*)highBitCString));
	const char highBitExpectedResult[] = "/#DE#ADbe#EF";
	CheckObjectOutput(reporter, highBitName.get(), highBitExpectedResult,
	strlen(highBitExpectedResult), false, false);

	SkAutoTUnref<SkPDFArray> array(new SkPDFArray);
	SimpleCheckObjectOutput(reporter, array.get(), "[]");
	array->append(int42.get());
	SimpleCheckObjectOutput(reporter, array.get(), "[42]");
	array->append(realHalf.get());
	SimpleCheckObjectOutput(reporter, array.get(), "[42 0.5]");
	SkAutoTUnref<SkPDFInt> int0(new SkPDFInt(0));
	array->append(int0.get());
	SimpleCheckObjectOutput(reporter, array.get(), "[42 0.5 0]");
	SkAutoTUnref<SkPDFInt> int1(new SkPDFInt(1));
	array->setAt(0, int1.get());
	SimpleCheckObjectOutput(reporter, array.get(), "[1 0.5 0]");

	SkAutoTUnref<SkPDFDict> dict(new SkPDFDict);
	SimpleCheckObjectOutput(reporter, dict.get(), "<<>>");
	SkAutoTUnref<SkPDFName> n1(new SkPDFName("n1"));
	dict->insert(n1.get(), int42.get());
	SimpleCheckObjectOutput(reporter, dict.get(), "<</n1 42\n>>");
	SkAutoTUnref<SkPDFName> n2(new SkPDFName("n2"));
	SkAutoTUnref<SkPDFName> n3(new SkPDFName("n3"));
	dict->insert(n2.get(), realHalf.get());
	dict->insert(n3.get(), array.get());
	SimpleCheckObjectOutput(reporter, dict.get(),
	"<</n1 42\n/n2 0.5\n/n3 [1 0.5 0]\n>>");

	TestPDFStream(reporter);

	TestCatalog(reporter);

	TestObjectRef(reporter);

	TestSubstitute(reporter);

	test_issue1083();

	TestImages(reporter);
	}

	namespace {

	class DummyImageFilter : public SkImageFilter {
	public:
	DummyImageFilter(bool visited = false) : SkImageFilter(0, NULL), fVisited(visited) {}
	~DummyImageFilter() SK_OVERRIDE {}
	virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
	SkBitmap* result, SkIPoint* offset) const {
	fVisited = true;
	offset->fX = offset->fY = 0;
	*result = src;
	return true;
	}
	SK_TO_STRING_OVERRIDE()
	SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter)
	bool visited() const { return fVisited; }

	private:
	mutable bool fVisited;
	};

	SkFlattenable* DummyImageFilter::CreateProc(SkReadBuffer& buffer) {
	SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
	bool visited = buffer.readBool();
	return SkNEW_ARGS(DummyImageFilter, (visited));
	}

	#ifndef SK_IGNORE_TO_STRING
	void DummyImageFilter::toString(SkString* str) const {
	str->appendf("DummyImageFilter: (");
	str->append(")");
	}
	#endif

	};

	// Check that PDF rendering of image filters successfully falls back to
	// CPU rasterization.
	DEF_TEST(PDFImageFilter, reporter) {
	SkISize pageSize = SkISize::Make(100, 100);
	SkAutoTUnref<SkPDFDevice> device(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));
	SkCanvas canvas(device.get());
	SkAutoTUnref<DummyImageFilter> filter(new DummyImageFilter());

	// Filter just created; should be unvisited.
	REPORTER_ASSERT(reporter, !filter->visited());
	SkPaint paint;
	paint.setImageFilter(filter.get());
	canvas.drawRect(SkRect::MakeWH(100, 100), paint);

	// Filter was used in rendering; should be visited.
	REPORTER_ASSERT(reporter, filter->visited());
	}