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// Copyright (c) 2009 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 <string.h>
#include <algorithm>
#include <iostream>
#include <vector>
#include "chrome/browser/thumbnail_store.h"
#include "app/gfx/codec/jpeg_codec.h"
#include "app/sql/connection.h"
#include "app/sql/statement.h"
#include "base/time.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/ref_counted.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/ref_counted_util.h"
#include "chrome/common/thumbnail_score.h"
#include "chrome/tools/profiles/thumbnail-inl.h"
#include "googleurl/src/gurl.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkPixelRef.h"
inline unsigned int diff(unsigned int a, unsigned int b) {
return a>b ? a-b : b-a;
}
class ThumbnailStoreTest : public testing::Test {
public:
ThumbnailStoreTest() : score_(.5, true, false),
url_("http://www.google.com/") {
}
~ThumbnailStoreTest() {
}
protected:
void SetUp();
void TearDown() {
file_util::Delete(db_name_, false);
}
// Compute the max difference over all pixels for each RGBA component.
void PrintPixelDiff(SkBitmap* image_a, SkBitmap* image_b);
// The directory where ThumbnailStore will store data.
FilePath db_name_;
scoped_refptr<ThumbnailStore> store_;
scoped_ptr<SkBitmap> google_;
scoped_ptr<SkBitmap> weewar_;
scoped_refptr<RefCountedBytes> jpeg_google_;
scoped_refptr<RefCountedBytes> jpeg_weewar_;
ThumbnailScore score_;
GURL url_;
base::Time time_;
};
void ThumbnailStoreTest::SetUp() {
if (!file_util::GetTempDir(&db_name_))
FAIL();
// Delete any old thumbnail files if they exist.
db_name_ = db_name_.AppendASCII("ThumbnailDB");
file_util::Delete(db_name_, false);
google_.reset(gfx::JPEGCodec::Decode(kGoogleThumbnail,
sizeof(kGoogleThumbnail)));
weewar_.reset(gfx::JPEGCodec::Decode(kWeewarThumbnail,
sizeof(kWeewarThumbnail)));
SkAutoLockPixels lock1(*google_);
jpeg_google_ = new RefCountedBytes;
gfx::JPEGCodec::Encode(
reinterpret_cast<unsigned char*>(google_->getAddr32(0, 0)),
gfx::JPEGCodec::FORMAT_BGRA, google_->width(),
google_->height(),
static_cast<int>(google_->rowBytes()), 90,
&(jpeg_google_->data));
SkAutoLockPixels lock2(*weewar_);
jpeg_weewar_ = new RefCountedBytes;
gfx::JPEGCodec::Encode(
reinterpret_cast<unsigned char*>(weewar_->getAddr32(0, 0)),
gfx::JPEGCodec::FORMAT_BGRA, weewar_->width(),
weewar_->height(),
static_cast<int>(weewar_->rowBytes()), 90,
&(jpeg_weewar_->data));
store_ = new ThumbnailStore;
store_->cache_.reset(new ThumbnailStore::Cache);
store_->redirect_urls_.reset(new history::RedirectMap);
store_->most_visited_urls_.reset(new ThumbnailStore::MostVisitedMap);
(*store_->most_visited_urls_)[url_] = GURL();
}
void ThumbnailStoreTest::PrintPixelDiff(SkBitmap* image_a, SkBitmap* image_b) {
// Compute the maximum difference in each of the RGBA components across all
// pixels between the retrieved SkBitmap and the original. These
// differences should be small since encoding was done at 90% before
// writing to disk.
if (image_a->height() != image_b->height() ||
image_b->width() != image_b->width() ||
image_a->rowBytes() != image_b->rowBytes())
return;
SkAutoLockPixels lock_a(*image_a);
SkAutoLockPixels lock_b(*image_b);
int ppr = image_a->rowBytesAsPixels();
unsigned int *a, *b;
unsigned int maxv[4];
memset(maxv, 0, sizeof(maxv));
for (int nrows = image_a->height()-1; nrows >= 0; nrows--) {
a = image_a->getAddr32(0, nrows);
b = image_b->getAddr32(0, nrows);
for (int i = 0; i < ppr; i += 4) {
for (int j = 0; j < 4; j++) {
maxv[j] = std::max(diff(*(a+i) >> (j<<3) & 0xff,
*(b+i) >> (j<<3) & 0xff),
maxv[j]);
}
}
}
std::cout << "Max diff btwn original and encoded image (b,g,r,a) = ("
<< maxv[0] << ","
<< maxv[1] << ","
<< maxv[2] << ","
<< maxv[3] << ")" << std::endl;
}
TEST_F(ThumbnailStoreTest, UpdateThumbnail) {
RefCountedBytes* read_image = NULL;
ThumbnailScore score2(0.1, true, true);
// store_ google_ with a low score, then weewar_ with a higher score
// and check that weewar_ overwrote google_.
EXPECT_TRUE(store_->SetPageThumbnail(url_, *google_, score_, false));
EXPECT_TRUE(store_->SetPageThumbnail(url_, *weewar_, score2, false));
EXPECT_TRUE(store_->GetPageThumbnail(url_, &read_image));
EXPECT_EQ(read_image->data.size(), jpeg_weewar_->data.size());
EXPECT_EQ(0, memcmp(&read_image->data[0], &jpeg_weewar_->data[0],
jpeg_weewar_->data.size()));
read_image->Release();
}
TEST_F(ThumbnailStoreTest, RetrieveFromCache) {
RefCountedBytes* read_image = NULL;
// Retrieve a thumbnail/score for a page not in the cache.
EXPECT_FALSE(store_->GetPageThumbnail(GURL("nonexistent"), &read_image));
// Store a thumbnail into the cache and retrieve it.
EXPECT_TRUE(store_->SetPageThumbnail(url_, *google_, score_, false));
EXPECT_TRUE(store_->GetPageThumbnail(url_, &read_image));
EXPECT_TRUE(score_.Equals((*store_->cache_)[url_].score_));
EXPECT_TRUE(read_image->data.size() == jpeg_google_->data.size());
EXPECT_EQ(0, memcmp(&read_image->data[0], &jpeg_google_->data[0],
jpeg_google_->data.size()));
read_image->Release();
}
TEST_F(ThumbnailStoreTest, RetrieveFromDisk) {
EXPECT_TRUE(store_->SetPageThumbnail(url_, *google_, score_, false));
// Write the thumbnail to disk and retrieve it.
store_->InitializeFromDB(db_name_, NULL);
// Write to the DB (dirty bit sould be set)
store_->CommitCacheToDB(NULL, new ThumbnailStore::Cache(*store_->cache_));
store_->cache_->clear(); // Clear it from the cache.
// Read from the DB.
sql::Statement statement(store_->db_.GetUniqueStatement(
"SELECT * FROM thumbnails"));
EXPECT_TRUE(statement.Step());
GURL url(statement.ColumnString(0));
ThumbnailScore score(statement.ColumnDouble(1),
statement.ColumnBool(2),
statement.ColumnBool(3),
base::Time::FromInternalValue(
statement.ColumnInt64(4)));
scoped_refptr<RefCountedBytes> data = new RefCountedBytes;
statement.ColumnBlobAsVector(5, &data->data);
EXPECT_TRUE(url == url_);
EXPECT_TRUE(score.Equals(score_));
EXPECT_TRUE(data->data.size() == jpeg_google_->data.size());
EXPECT_EQ(0, memcmp(&data->data[0], &jpeg_google_->data[0],
jpeg_google_->data.size()));
}
TEST_F(ThumbnailStoreTest, FollowRedirects) {
RefCountedBytes* read_image = NULL;
std::vector<GURL> redirects;
GURL my_url("google");
redirects.push_back(GURL("google.com"));
redirects.push_back(GURL("www.google.com"));
redirects.push_back(url_); // url_ = http://www.google.com/
(*store_->redirect_urls_)[my_url] = new RefCountedVector<GURL>(redirects);
(*store_->most_visited_urls_)[url_] = my_url;
EXPECT_TRUE(store_->SetPageThumbnail(GURL("google.com"), *google_, score_,
false));
EXPECT_TRUE(store_->GetPageThumbnail(my_url, &read_image));
read_image->Release();
}
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