skia2/tests/FlateTest.cpp

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/*
Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
* Copyright 2011 Google Inc.
*
Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkData.h"
#include "SkFlate.h"
#include "SkStream.h"
#include "Test.h"
// A memory stream that reports zero size with the standard call, like
// an unseekable file stream would.
class SkZeroSizeMemStream : public SkMemoryStream {
public:
virtual size_t read(void* buffer, size_t size) {
if (buffer == NULL && size == 0)
return 0;
if (buffer == NULL && size == kGetSizeKey)
size = 0;
return SkMemoryStream::read(buffer, size);
}
static const size_t kGetSizeKey = 0xDEADBEEF;
};
// Returns a deterministic data of the given size that should be
// very compressible.
static SkData* new_test_data(size_t dataSize) {
SkAutoTMalloc<uint8_t> testBuffer(dataSize);
for (size_t i = 0; i < dataSize; ++i) {
testBuffer[SkToInt(i)] = i % 64;
}
return SkData::NewFromMalloc(testBuffer.detach(), dataSize);
}
static void TestFlate(skiatest::Reporter* reporter, SkMemoryStream* testStream,
size_t dataSize) {
SkASSERT(testStream != NULL);
SkAutoDataUnref testData(new_test_data(dataSize));
SkASSERT(testData->size() == dataSize);
testStream->setMemory(testData->data(), dataSize, /*copyData=*/ true);
SkDynamicMemoryWStream compressed;
bool deflateSuccess = SkFlate::Deflate(testStream, &compressed);
REPORTER_ASSERT(reporter, deflateSuccess);
// Check that the input data wasn't changed.
size_t inputSize = testStream->getLength();
if (inputSize == 0) {
inputSize = testStream->read(NULL, SkZeroSizeMemStream::kGetSizeKey);
}
REPORTER_ASSERT(reporter, dataSize == inputSize);
if (dataSize == inputSize) {
REPORTER_ASSERT(reporter, memcmp(testData->data(),
testStream->getMemoryBase(),
dataSize) == 0);
}
size_t compressedSize = compressed.getOffset();
SkAutoDataUnref compressedData(compressed.copyToData());
testStream->setData(compressedData.get());
SkDynamicMemoryWStream uncompressed;
bool inflateSuccess = SkFlate::Inflate(testStream, &uncompressed);
REPORTER_ASSERT(reporter, inflateSuccess);
// Check that the input data wasn't changed.
inputSize = testStream->getLength();
if (inputSize == 0) {
inputSize = testStream->read(NULL, SkZeroSizeMemStream::kGetSizeKey);
}
REPORTER_ASSERT(reporter, compressedSize == inputSize);
if (compressedData->size() == inputSize) {
REPORTER_ASSERT(reporter, memcmp(testStream->getMemoryBase(),
compressedData->data(),
compressedData->size()) == 0);
}
// Check that the uncompressed data matches the source data.
SkAutoDataUnref uncompressedData(uncompressed.copyToData());
REPORTER_ASSERT(reporter, dataSize == uncompressedData->size());
if (dataSize == uncompressedData->size()) {
REPORTER_ASSERT(reporter, memcmp(testData->data(),
uncompressedData->data(),
dataSize) == 0);
}
if (compressedSize < 1) { return; }
double compressionRatio = static_cast<double>(dataSize) / compressedSize;
// Assert that some compression took place.
REPORTER_ASSERT(reporter, compressionRatio > 1.2);
if (reporter->verbose()) {
SkDebugf("Flate Test: \t input size: " SK_SIZE_T_SPECIFIER
"\tcompressed size: " SK_SIZE_T_SPECIFIER
"\tratio: %.4g\n",
dataSize, compressedSize, compressionRatio);
}
}
DEF_TEST(Flate, reporter) {
#ifdef SK_HAS_ZLIB
REPORTER_ASSERT(reporter, SkFlate::HaveFlate());
#endif
if (SkFlate::HaveFlate()) {
SkMemoryStream memStream;
TestFlate(reporter, &memStream, 512);
TestFlate(reporter, &memStream, 10240);
SkZeroSizeMemStream fileStream;
TestFlate(reporter, &fileStream, 512);
TestFlate(reporter, &fileStream, 10240);
}
}