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PNM image loader + tests

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Vladyslav Baranovskyi
2024-12-24 21:54:20 +02:00
parent 4d6cba0afd
commit 7ea6edf5d0
3 changed files with 296 additions and 0 deletions
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tests/Image/ImageLoaderPnmTest.cpp Normal file
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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
#include <catch2/catch_test_macros.hpp>
#include "Image/ImageLoaderPnm.hpp"
#include "Scene/DataFormat.hpp"
#include <fstream>
using namespace OpenVulkano;
using namespace OpenVulkano::Image;
TEST_CASE("ImageLoaderPnm - Load P1 (ASCII Black & White)")
{
std::vector<uint8_t> p1Buffer = { 'P', '1', '\n', '4', ' ', '2', '\n', '1', ' ', '0', ' ', '1',
' ', '0', '\n', '0', ' ', '1', ' ', '0', ' ', '1', '\n' };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p1Buffer);
REQUIRE(image->resolution.x == 4);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8_UINT);
REQUIRE(image->data == Array<uint8_t> { 255, 0, 255, 0, 0, 255, 0, 255 });
}
TEST_CASE("ImageLoaderPnm - Load P2 (ASCII Grayscale)")
{
std::vector<uint8_t> p2Buffer = { 'P', '2', '\n', '4', ' ', '2', '\n', '2', '5', '5', '\n', '0', ' ',
'6', '4', ' ', '1', '2', '8', ' ', '2', '5', '5', '\n', '2', '5',
'5', ' ', '1', '2', '8', ' ', '6', '4', ' ', '0', '\n' };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p2Buffer);
REQUIRE(image->resolution.x == 4);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8_UINT);
REQUIRE(image->data == Array<uint8_t> { 0, 64, 128, 255, 255, 128, 64, 0 });
}
TEST_CASE("ImageLoaderPnm - Load P3 (ASCII RGB)")
{
std::vector<uint8_t> p3Buffer = { 'P', '3', '\n', '2', ' ', '2', '\n', '2', '5', '5', '\n', '2', '5', '5', ' ', '0',
' ', '0', ' ', '0', ' ', '2', '5', '5', ' ', '0', '\n', '0', ' ', '0', ' ', '2',
'5', '5', ' ', '2', '5', '5', ' ', '2', '5', '5', ' ', '2', '5', '5', '\n' };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p3Buffer);
REQUIRE(image->resolution.x == 2);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8G8B8_UINT);
REQUIRE(image->data == Array<uint8_t> { 255, 0, 0, 0, 255, 0, 0, 0, 255, 255, 255, 255 });
}
TEST_CASE("ImageLoaderPnm - Load P4 (Binary Black & White)")
{
std::vector<uint8_t> p4Buffer = { 'P', '4', '\n', '8', ' ', '2', '\n', 0b10101010, 0b01010101 };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p4Buffer);
REQUIRE(image->resolution.x == 8);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8_UINT);
REQUIRE(image->data
== Array<uint8_t> {
255, 0, 255, 0, 255, 0, 255, 0, // Row 1
0, 255, 0, 255, 0, 255, 0, 255 // Row 2
});
}
TEST_CASE("ImageLoaderPnm - Load P5 (Binary Grayscale)")
{
std::vector<uint8_t> p5Buffer = { 'P', '5', '\n', '4', ' ', '2', '\n', '2', '5', '5',
'\n', 0, 64, 128, 255, 255, 128, 64, 0 };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p5Buffer);
REQUIRE(image->resolution.x == 4);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8_UINT);
REQUIRE(image->data == Array<uint8_t> { 0, 64, 128, 255, 255, 128, 64, 0 });
}
TEST_CASE("ImageLoaderPnm - Load P6 (Binary RGB)")
{
std::vector<uint8_t> p6Buffer = { 'P', '6', '\n', '2', ' ', '2', '\n', '2', '5', '5', '\n', 255,
0, 0, 0, 255, 0, 0, 0, 255, 255, 255, 255 };
ImageLoaderPnm loader;
auto image = loader.loadFromMemory(p6Buffer);
REQUIRE(image->resolution.x == 2);
REQUIRE(image->resolution.y == 2);
REQUIRE(image->dataFormat == DataFormat::Format::R8G8B8_UINT);
REQUIRE(image->data == Array<uint8_t> { 255, 0, 0, 0, 255, 0, 0, 0, 255, 255, 255, 255 });
}
TEST_CASE("ImageLoaderPnm - Get Dimensions")
{
ImageLoaderPnm loader;
std::string mockFile = "mock.pnm";
std::ofstream outFile(mockFile);
outFile << "P6\n2 2\n255\n";
outFile.close();
auto dimensions = loader.GetImageDimensions(mockFile);
REQUIRE(dimensions.x == 2);
REQUIRE(dimensions.y == 2);
std::remove(mockFile.c_str());
}