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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "webkit/tools/test_shell/image_decoder_unittest.h"
#include "base/file_util.h"
#include "base/md5.h"
#include "base/path_service.h"
#include "base/scoped_ptr.h"
#include "base/string_util.h"
#include "base/time.h"
using base::Time;
void ReadFileToVector(const std::wstring& path, Vector<char>* contents) {
std::string contents_str;
file_util::ReadFileToString(path, &contents_str);
contents->resize(contents_str.size());
memcpy(&contents->first(), contents_str.data(), contents_str.size());
}
std::wstring GetMD5SumPath(const std::wstring& path) {
static const std::wstring kDecodedDataExtension(L".md5sum");
return path + kDecodedDataExtension;
}
#ifdef CALCULATE_MD5_SUMS
void SaveMD5Sum(const std::wstring& path, WebCore::RGBA32Buffer* buffer) {
// Create the file to write.
ScopedHandle handle(CreateFile(path.c_str(), GENERIC_WRITE, 0,
NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL));
ASSERT_TRUE(handle.IsValid());
// Calculate MD5 sum.
MD5Digest digest;
SkAutoLockPixels bmp_lock(buffer->bitmap());
MD5Sum(buffer->bitmap().getPixels(),
buffer->rect().width() * buffer->rect().height() * sizeof(unsigned),
&digest);
// Write sum to disk.
int bytes_written = file_util::WriteFile(path, &digest, sizeof digest);
ASSERT_EQ(sizeof digest, bytes_written);
}
#else
void VerifyImage(WebCore::ImageDecoder* decoder,
const std::wstring& path,
const std::wstring& md5_sum_path) {
// Make sure decoding can complete successfully.
EXPECT_TRUE(decoder->isSizeAvailable()) << path;
WebCore::RGBA32Buffer* image_buffer = decoder->frameBufferAtIndex(0);
ASSERT_NE(static_cast<WebCore::RGBA32Buffer*>(NULL), image_buffer) << path;
EXPECT_EQ(WebCore::RGBA32Buffer::FrameComplete, image_buffer->status()) <<
path;
EXPECT_FALSE(decoder->failed()) << path;
// Calculate MD5 sum.
MD5Digest actual_digest;
SkAutoLockPixels bmp_lock(image_buffer->bitmap());
MD5Sum(image_buffer->bitmap().getPixels(), image_buffer->rect().width() *
image_buffer->rect().height() * sizeof(unsigned), &actual_digest);
// Read the MD5 sum off disk.
std::string file_bytes;
file_util::ReadFileToString(md5_sum_path, &file_bytes);
MD5Digest expected_digest;
ASSERT_EQ(sizeof expected_digest, file_bytes.size()) << path;
memcpy(&expected_digest, file_bytes.data(), sizeof expected_digest);
// Verify that the sums are the same.
EXPECT_EQ(0, memcmp(&expected_digest, &actual_digest, sizeof(MD5Digest))) <<
path;
}
#endif
void ImageDecoderTest::SetUp() {
ASSERT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &data_dir_));
file_util::AppendToPath(&data_dir_, L"webkit");
file_util::AppendToPath(&data_dir_, L"data");
file_util::AppendToPath(&data_dir_, format_ + L"_decoder");
ASSERT_TRUE(file_util::PathExists(data_dir_)) << data_dir_;
}
std::vector<std::wstring> ImageDecoderTest::GetImageFiles() const {
std::wstring pattern = L"*." + format_;
file_util::FileEnumerator enumerator(FilePath::FromWStringHack(data_dir_),
false,
file_util::FileEnumerator::FILES);
std::vector<std::wstring> image_files;
std::wstring next_file_name;
while ((next_file_name = enumerator.Next().ToWStringHack()) != L"") {
if (!MatchPattern(next_file_name, pattern)) {
continue;
}
image_files.push_back(next_file_name);
}
return image_files;
}
bool ImageDecoderTest::ShouldImageFail(const std::wstring& path) const {
static const std::wstring kBadSuffix(L".bad.");
return (path.length() > (kBadSuffix.length() + format_.length()) &&
!path.compare(path.length() - format_.length() - kBadSuffix.length(),
kBadSuffix.length(), kBadSuffix));
}
void ImageDecoderTest::TestDecoding() const {
const std::vector<std::wstring> image_files(GetImageFiles());
for (std::vector<std::wstring>::const_iterator i(image_files.begin());
i != image_files.end(); ++i) {
Vector<char> image_contents;
ReadFileToVector(*i, &image_contents);
scoped_ptr<WebCore::ImageDecoder> decoder(CreateDecoder());
RefPtr<WebCore::SharedBuffer> shared_contents(WebCore::SharedBuffer::create());
shared_contents->append(image_contents.data(),
static_cast<int>(image_contents.size()));
decoder->setData(shared_contents.get(), true);
if (ShouldImageFail(*i)) {
// We should always get a non-NULL frame buffer, but when the decoder
// tries to produce it, it should fail, and the frame buffer shouldn't
// complete.
WebCore::RGBA32Buffer* const image_buffer =
decoder->frameBufferAtIndex(0);
ASSERT_NE(static_cast<WebCore::RGBA32Buffer*>(NULL), image_buffer) <<
(*i);
EXPECT_NE(image_buffer->status(), WebCore::RGBA32Buffer::FrameComplete) <<
(*i);
EXPECT_TRUE(decoder->failed()) << (*i);
continue;
}
#ifdef CALCULATE_MD5_SUMS
SaveMD5Sum(GetMD5SumPath(*i), decoder->frameBufferAtIndex(0));
#else
VerifyImage(decoder.get(), *i, GetMD5SumPath(*i));
#endif
}
}
#ifndef CALCULATE_MD5_SUMS
void ImageDecoderTest::TestChunkedDecoding() const {
// Init random number generator with current day, so a failing case will fail
// consistently over the course of a whole day.
const Time today = Time::Now().LocalMidnight();
srand(static_cast<unsigned int>(today.ToInternalValue()));
const std::vector<std::wstring> image_files(GetImageFiles());
for (std::vector<std::wstring>::const_iterator i(image_files.begin());
i != image_files.end(); ++i) {
if (ShouldImageFail(*i))
continue;
// Read the file and split it at an arbitrary point.
Vector<char> image_contents;
ReadFileToVector(*i, &image_contents);
const int partial_size = static_cast<int>(
(static_cast<double>(rand()) / RAND_MAX) * image_contents.size());
RefPtr<WebCore::SharedBuffer> partial_contents(WebCore::SharedBuffer::create());
partial_contents->append(image_contents.data(), partial_size);
// Make sure the image decoder doesn't fail when we ask for the frame buffer
// for this partial image.
scoped_ptr<WebCore::ImageDecoder> decoder(CreateDecoder());
decoder->setData(partial_contents.get(), false);
EXPECT_NE(static_cast<WebCore::RGBA32Buffer*>(NULL),
decoder->frameBufferAtIndex(0)) << (*i);
EXPECT_FALSE(decoder->failed()) << (*i);
// Make sure passing the complete image results in successful decoding.
partial_contents->append(
&image_contents.data()[partial_size],
static_cast<int>(image_contents.size() - partial_size));
decoder->setData(partial_contents.get(), true);
VerifyImage(decoder.get(), *i, GetMD5SumPath(*i));
}
}
#endif
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