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- // Copyright 2013 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 "components/pwg_encoder/pwg_encoder.h"
- #include <stdint.h>
- #include <memory>
- #include "base/hash/sha1.h"
- #include "base/strings/string_number_conversions.h"
- #include "components/pwg_encoder/bitmap_image.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace pwg_encoder {
- namespace {
- const int kRasterWidth = 612;
- const int kRasterHeight = 792;
- const int kRasterDPI = 72;
- std::unique_ptr<BitmapImage> MakeSampleBitmap() {
- auto bitmap_image = std::make_unique<BitmapImage>(
- gfx::Size(kRasterWidth, kRasterHeight), BitmapImage::RGBA);
- uint32_t* bitmap_data =
- reinterpret_cast<uint32_t*>(bitmap_image->pixel_data());
- for (int i = 0; i < kRasterWidth * kRasterHeight; i++)
- bitmap_data[i] = 0xFFFFFF;
- for (int i = 0; i < kRasterWidth; i++) {
- for (int j = 200; j < 300; j++) {
- int row_start = j * kRasterWidth;
- uint32_t red = (i * 255) / kRasterWidth;
- bitmap_data[row_start + i] = red;
- }
- }
- // To test run length encoding
- for (int i = 0; i < kRasterWidth; i++) {
- for (int j = 400; j < 500; j++) {
- int row_start = j * kRasterWidth;
- if ((i / 40) % 2 == 0) {
- bitmap_data[row_start + i] = 255 << 8;
- } else {
- bitmap_data[row_start + i] = 255 << 16;
- }
- }
- }
- return bitmap_image;
- }
- } // namespace
- TEST(PwgRasterTest, Encode) {
- // Encode in color by default.
- std::unique_ptr<BitmapImage> image = MakeSampleBitmap();
- PwgHeaderInfo header_info;
- header_info.dpi = gfx::Size(kRasterDPI, kRasterDPI);
- std::string output = PwgEncoder::GetDocumentHeader();
- output += PwgEncoder::EncodePage(*image, header_info);
- EXPECT_EQ(2970U, output.size());
- std::string sha1 = base::SHA1HashString(output);
- EXPECT_EQ("4AD7442998C8FEAE94BC9C8B177A7C94766CC9FB",
- base::HexEncode(sha1.data(), sha1.size()));
- // Encode again in monochrome.
- header_info.color_space = PwgHeaderInfo::SGRAY;
- output = PwgEncoder::GetDocumentHeader();
- output += PwgEncoder::EncodePage(*image, header_info);
- EXPECT_EQ(2388U, output.size());
- sha1 = base::SHA1HashString(output);
- EXPECT_EQ("4E718B0A69AC26A366A2E23AE1ECA6055079A1FF",
- base::HexEncode(sha1.data(), sha1.size()));
- }
- } // namespace pwg_encoder
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