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UnitTests: Add GIF decoding tests

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SirLynix 2022-04-26 13:02:51 +02:00 committed by Jérôme Leclercq
parent 13f765fc0d
commit 8db95b445b
3 changed files with 165 additions and 0 deletions
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bin/resources/Tests/GIF/canvas_bgnd.gif Normal file
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tests/Engine/Utility/ImageStreamLoading.cpp Normal file
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#include <Nazara/Utility/Image.hpp>
#include <Nazara/Utility/ImageStream.hpp>
#include <Nazara/Utility/PixelFormat.hpp>
#include <catch2/catch.hpp>
#include <filesystem>
std::filesystem::path GetResourceDir();
void CompareFrames(const Nz::ImageStream& gif, std::vector<Nz::UInt8>& frameData, const Nz::Image& referenceImage)
{
Nz::Vector2ui size = gif.GetSize();
REQUIRE(referenceImage.GetSize() == Nz::Vector3ui(size, 1));
REQUIRE(referenceImage.GetFormat() == gif.GetPixelFormat()); //< TODO: Convert?
REQUIRE(frameData.size() == Nz::PixelFormatInfo::ComputeSize(gif.GetPixelFormat(), size.x, size.y, 1));
REQUIRE(std::memcmp(frameData.data(), referenceImage.GetConstPixels(), frameData.size()) == 0);
}
SCENARIO("Streamed images", "[Utility][ImageStream]")
{
std::vector<Nz::UInt8> frameData;
struct ExpectedFrame
{
std::shared_ptr<Nz::Image> referenceImage;
Nz::UInt64 time;
};
std::filesystem::path resourcePath = GetResourceDir();
WHEN("Loading GIF files")
{
GIVEN("canvas_bgnd.gif")
{
std::array expectedFrames = {
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_bgnd/0.png"),
0
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_bgnd/1.png"),
1000
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_bgnd/2.png"),
2000
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_bgnd/3.png"),
3000
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_bgnd/4.png"),
4000
}
};
std::shared_ptr<Nz::ImageStream> gif = Nz::ImageStream::OpenFromFile(resourcePath / "Tests/GIF/canvas_bgnd.gif");
REQUIRE(gif);
Nz::Vector2ui size = gif->GetSize();
CHECK(size == Nz::Vector2ui(100, 100));
CHECK(gif->GetFrameCount() == expectedFrames.size());
CHECK(gif->GetPixelFormat() == Nz::PixelFormat::RGBA8);
frameData.resize(Nz::PixelFormatInfo::ComputeSize(gif->GetPixelFormat(), size.x, size.y, 1));
// Decode all frames in order
Nz::UInt64 frameTime;
for (ExpectedFrame& expectedFrame : expectedFrames)
{
REQUIRE(expectedFrame.referenceImage);
REQUIRE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == expectedFrame.time);
CompareFrames(*gif, frameData, *expectedFrame.referenceImage);
}
// Decoding the post-the-end frame fails but gives the end frametime
REQUIRE_FALSE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == 5000);
// Decode frames in arbitrary order, to ensure results are corrects
for (std::size_t frameIndex : { 2, 0, 3, 1, 4 })
{
INFO("Decoding frame " << frameIndex);
ExpectedFrame& expectedFrame = expectedFrames[frameIndex];
gif->Seek(frameIndex);
REQUIRE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == expectedFrame.time);
CompareFrames(*gif, frameData, *expectedFrame.referenceImage);
}
}
GIVEN("canvas_prev.gif")
{
std::array expectedFrames = {
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_prev/0.png"),
0
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_prev/1.png"),
100
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_prev/2.png"),
1100
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_prev/3.png"),
2100
},
ExpectedFrame{
Nz::Image::LoadFromFile(resourcePath / "Tests/GIF/canvas_prev/4.png"),
3100
}
};
std::shared_ptr<Nz::ImageStream> gif = Nz::ImageStream::OpenFromFile(resourcePath / "Tests/GIF/canvas_prev.gif");
REQUIRE(gif);
Nz::Vector2ui size = gif->GetSize();
CHECK(size == Nz::Vector2ui(100, 100));
CHECK(gif->GetFrameCount() == expectedFrames.size());
CHECK(gif->GetPixelFormat() == Nz::PixelFormat::RGBA8);
frameData.resize(Nz::PixelFormatInfo::ComputeSize(gif->GetPixelFormat(), size.x, size.y, 1));
// Decode all frames in order
Nz::UInt64 frameTime;
for (ExpectedFrame& expectedFrame : expectedFrames)
{
REQUIRE(expectedFrame.referenceImage);
REQUIRE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == expectedFrame.time);
CompareFrames(*gif, frameData, *expectedFrame.referenceImage);
}
// Decoding the post-the-end frame fails but gives the end frametime
REQUIRE_FALSE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == 4100);
// Decode frames in arbitrary order, to ensure results are corrects
for (std::size_t frameIndex : { 2, 0, 3, 1, 4 })
{
INFO("Decoding frame " << frameIndex);
ExpectedFrame& expectedFrame = expectedFrames[frameIndex];
gif->Seek(frameIndex);
REQUIRE(gif->DecodeNextFrame(frameData.data(), &frameTime));
CHECK(frameTime == expectedFrame.time);
CompareFrames(*gif, frameData, *expectedFrame.referenceImage);
}
}
}
}