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moz-skia
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moz-skia/tests/PDFPrimitivesTest.cpp

431 строка
16 KiB
C++
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/*
* 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 "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());
int len = strlen(buffer); // our buffer does not have EOSs.
for (int offset = 0 ; offset < (int)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";
SkAutoTUnref<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, false);
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);
catalog.emitSubstituteResources(&buffer, false);
char objectResult[] = "2 0 obj\n<</Value 33\n>>\nendobj\n";
REPORTER_ASSERT(
reporter,
catalog.setFileOffset(proxy.get(), 0) == 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);
}
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