mirror of
https://github.com/google/sandboxed-api.git
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117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <iostream>
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#include <glog/logging.h>
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#include "helpers.h" // NOLINT(build/include)
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#include "lodepng.h" // NOLINT(build/include)
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#include "sandboxed_api/util/fileops.h"
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#include "sandboxed_api/util/path.h"
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void EncodeDecodeOneStep(const std::string& images_path) {
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// Generate the values.
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std::vector<uint8_t> image = GenerateValues();
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// Encode the image.
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const std::string filename =
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sandbox2::file::JoinPath(images_path, "/out_generated1.png");
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unsigned int result =
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lodepng_encode32_file(filename.c_str(), image.data(), kWidth, kHeight);
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CHECK(!result) << "Unexpected result from encode32_file call";
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// After the image has been encoded, decode it to check that the
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// pixel values are the same.
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unsigned int width, height;
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uint8_t* image2 = 0;
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result = lodepng_decode32_file(&image2, &width, &height, filename.c_str());
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CHECK(!result) << "Unexpected result from decode32_file call";
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CHECK(width == kWidth) << "Widths differ";
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CHECK(height == kHeight) << "Heights differ";
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// Now, we can compare the values.
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CHECK(absl::equal(image.begin(), image.end(), image2, image2 + kImgLen))
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<< "Values differ";
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free(image2);
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}
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void EncodeDecodeTwoSteps(const std::string& images_path) {
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// Generate the values.
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std::vector<uint8_t> image = GenerateValues();
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// Encode the image into memory first.
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const std::string filename =
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sandbox2::file::JoinPath(images_path, "/out_generated2.png");
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uint8_t* png;
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size_t pngsize;
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unsigned int result =
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lodepng_encode32(&png, &pngsize, image.data(), kWidth, kHeight);
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CHECK(!result) << "Unexpected result from encode32 call";
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// Write the image into the file (from memory).
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result = lodepng_save_file(png, pngsize, filename.c_str());
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CHECK(!result) << "Unexpected result from save_file call";
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// Now, decode the image using the 2 steps in order to compare the values.
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unsigned int width, height;
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uint8_t* png2;
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size_t pngsize2;
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// Load the file in memory.
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result = lodepng_load_file(&png2, &pngsize2, filename.c_str());
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CHECK(!result) << "Unexpected result from load_file call";
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CHECK(pngsize == pngsize2) << "Png sizes differ";
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uint8_t* image2;
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result = lodepng_decode32(&image2, &width, &height, png2, pngsize2);
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CHECK(!result) << "Unexpected result from decode32 call";
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CHECK(width == kWidth) << "Widths differ";
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CHECK(height == kHeight) << "Heights differ";
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// Compare the values.
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CHECK(absl::equal(image.begin(), image.end(), image2, image2 + kImgLen))
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<< "Values differ";
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free(png);
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free(png2);
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free(image2);
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}
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int main(int argc, char* argv[]) {
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google::InitGoogleLogging(argv[0]);
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const std::string images_path = CreateTempDirAtCWD();
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CHECK(sandbox2::file_util::fileops::Exists(images_path, false))
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<< "Temporary directory does not exist";
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EncodeDecodeOneStep(images_path);
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EncodeDecodeTwoSteps(images_path);
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if (sandbox2::file_util::fileops::DeleteRecursively(images_path)) {
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LOG(WARNING) << "Temporary folder could not be deleted";
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}
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return EXIT_SUCCESS;
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}
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