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using System.IO;
using System.Threading.Tasks;
using BCnEncoder.Decoder;
using BCnEncoder.Encoder;
using BCnEncoder.ImageSharp;
using BCnEncoder.Shared;
using BCnEncoder.Shared.ImageFiles;
using BCnEncTests.Support;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using Xunit;
namespace BCnEncTests
{
public class ImageSharpEncodingTests
{
private readonly BcEncoder encoder;
private readonly BcDecoder decoder;
private readonly Image<Rgba32> original;
private readonly Image<Rgba32>[] cubemap;
public ImageSharpEncodingTests()
{
encoder = new BcEncoder();
encoder.OutputOptions.Quality = CompressionQuality.Fast;
decoder = new BcDecoder();
original = ImageLoader.LoadTestImageSharp("../../../testImages/test_gradient_1_512.jpg");
cubemap = new[]
{
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/right.png"),
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/left.png"),
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/top.png"),
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/bottom.png"),
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/back.png"),
ImageLoader.LoadTestImageSharp("../../../testImages/cubemap/forward.png"),
};
}
[Fact]
public void EncodeToKtx()
{
var ktx = encoder.EncodeToKtx(original);
using var decoded = decoder.DecodeToImageRgba32(ktx);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void EncodeToDds()
{
var dds = encoder.EncodeToDds(original);
using var decoded = decoder.DecodeToImageRgba32(dds);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void EncodeToStreamKtx()
{
encoder.OutputOptions.FileFormat = OutputFileFormat.Ktx;
using var ms = new MemoryStream();
encoder.EncodeToStream(original, ms);
ms.Position = 0;
using var decoded = decoder.DecodeToImageRgba32(ms);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void EncodeToStreamDds()
{
encoder.OutputOptions.FileFormat = OutputFileFormat.Dds;
using var ms = new MemoryStream();
encoder.EncodeToStream(original, ms);
ms.Position = 0;
using var decoded = decoder.DecodeToImageRgba32(ms);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void EncodeToRawBytes()
{
var rawBytes = encoder.EncodeToRawBytes(original);
using var decoded = decoder.DecodeRawToImageRgba32(rawBytes[0], original.Width, original.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void EncodeToRawBytesSingleMip()
{
var mip0 = encoder.EncodeToRawBytes(original, 0, out var mipWidth, out var mipHeight);
Assert.Equal(original.Width, mipWidth);
Assert.Equal(original.Height, mipHeight);
Assert.True(mip0.Length > 0);
}
[Fact]
public void CalculateMipLevelCount()
{
var fromImage = encoder.CalculateNumberOfMipLevels(original);
var fromDims = encoder.CalculateNumberOfMipLevels(original.Width, original.Height);
Assert.Equal(fromDims, fromImage);
}
[Fact]
public void CalculateMipMapSize()
{
encoder.CalculateMipMapSize(original, 0, out var w0, out var h0);
Assert.Equal(original.Width, w0);
Assert.Equal(original.Height, h0);
encoder.CalculateMipMapSize(original, 1, out var w1, out var h1);
Assert.Equal(original.Width / 2, w1);
Assert.Equal(original.Height / 2, h1);
}
[Fact]
public void EncodeCubeMapToKtx()
{
var ktx = encoder.EncodeCubeMapToKtx(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5]);
Assert.Equal(6, ktx.MipMaps[0].Faces.Length);
for (var i = 0; i < 6; i++)
{
var face = ktx.MipMaps[0].Faces[i];
using var decoded = decoder.DecodeRawToImageRgba32(face.Data, (int)face.Width, (int)face.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(cubemap[i], decoded, encoder.OutputOptions.Quality);
}
}
[Fact]
public void EncodeCubeMapToDds()
{
var dds = encoder.EncodeCubeMapToDds(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5]);
Assert.Equal(6, dds.Faces.Count);
for (var i = 0; i < 6; i++)
{
var face = dds.Faces[i].MipMaps[0];
using var decoded = decoder.DecodeRawToImageRgba32(face.Data, (int)face.Width, (int)face.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(cubemap[i], decoded, encoder.OutputOptions.Quality);
}
}
[Fact]
public void EncodeCubeMapToStream()
{
encoder.OutputOptions.FileFormat = OutputFileFormat.Ktx;
using var ms = new MemoryStream();
encoder.EncodeCubeMapToStream(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5], ms);
ms.Position = 0;
var ktx = KtxFile.Load(ms);
Assert.Equal(6, ktx.MipMaps[0].Faces.Length);
}
[Fact]
public async Task EncodeToKtxAsync()
{
var ktx = await encoder.EncodeToKtxAsync(original);
using var decoded = decoder.DecodeToImageRgba32(ktx);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task EncodeToDdsAsync()
{
var dds = await encoder.EncodeToDdsAsync(original);
using var decoded = decoder.DecodeToImageRgba32(dds);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task EncodeToStreamAsync()
{
encoder.OutputOptions.FileFormat = OutputFileFormat.Ktx;
using var ms = new MemoryStream();
await encoder.EncodeToStreamAsync(original, ms);
ms.Position = 0;
using var decoded = decoder.DecodeToImageRgba32(ms);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task EncodeToRawBytesAsync()
{
var rawBytes = await encoder.EncodeToRawBytesAsync(original);
using var decoded = decoder.DecodeRawToImageRgba32(rawBytes[0], original.Width, original.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task EncodeCubeMapToKtxAsync()
{
var ktx = await encoder.EncodeCubeMapToKtxAsync(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5]);
Assert.Equal(6, ktx.MipMaps[0].Faces.Length);
}
[Fact]
public async Task EncodeCubeMapToDdsAsync()
{
var dds = await encoder.EncodeCubeMapToDdsAsync(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5]);
Assert.Equal(6, dds.Faces.Count);
}
[Fact]
public async Task EncodeCubeMapToStreamAsync()
{
encoder.OutputOptions.FileFormat = OutputFileFormat.Ktx;
using var ms = new MemoryStream();
await encoder.EncodeCubeMapToStreamAsync(cubemap[0], cubemap[1], cubemap[2], cubemap[3], cubemap[4], cubemap[5], ms);
ms.Position = 0;
var ktx = KtxFile.Load(ms);
Assert.Equal(6, ktx.MipMaps[0].Faces.Length);
}
}
public class ImageSharpDecodingTests
{
private readonly BcEncoder encoder;
private readonly BcDecoder decoder;
private readonly Image<Rgba32> original;
private readonly KtxFile encodedKtx;
private readonly DdsFile encodedDds;
private readonly byte[] rawEncoded;
public ImageSharpDecodingTests()
{
encoder = new BcEncoder();
encoder.OutputOptions.Quality = CompressionQuality.Fast;
decoder = new BcDecoder();
original = ImageLoader.LoadTestImageSharp("../../../testImages/test_gradient_1_512.jpg");
encodedKtx = encoder.EncodeToKtx(ImageLoader.TestGradient1);
encodedDds = encoder.EncodeToDds(ImageLoader.TestGradient1);
rawEncoded = encoder.EncodeToRawBytes(ImageLoader.TestGradient1)[0];
}
[Fact]
public void DecodeKtxFile()
{
using var decoded = decoder.DecodeToImageRgba32(encodedKtx);
Assert.Equal(original.Width, decoded.Width);
Assert.Equal(original.Height, decoded.Height);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void DecodeDdsFile()
{
using var decoded = decoder.DecodeToImageRgba32(encodedDds);
Assert.Equal(original.Width, decoded.Width);
Assert.Equal(original.Height, decoded.Height);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void DecodeStream()
{
using var ms = new MemoryStream();
encodedKtx.Write(ms);
ms.Position = 0;
using var decoded = decoder.DecodeToImageRgba32(ms);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void DecodeAllMipMapsKtx()
{
encoder.OutputOptions.GenerateMipMaps = true;
var ktxWithMips = encoder.EncodeToKtx(ImageLoader.TestGradient1);
var images = decoder.DecodeAllMipMapsToImageRgba32(ktxWithMips);
Assert.Equal((int)ktxWithMips.header.NumberOfMipmapLevels, images.Length);
Assert.True(images.Length > 1);
TestHelper.AssertImagesEqual(original, images[0], encoder.OutputOptions.Quality);
foreach (var img in images) img.Dispose();
}
[Fact]
public void DecodeAllMipMapsDds()
{
encoder.OutputOptions.GenerateMipMaps = true;
var ddsWithMips = encoder.EncodeToDds(ImageLoader.TestGradient1);
var images = decoder.DecodeAllMipMapsToImageRgba32(ddsWithMips);
Assert.Equal((int)ddsWithMips.header.dwMipMapCount, images.Length);
Assert.True(images.Length > 1);
foreach (var img in images) img.Dispose();
}
[Fact]
public void DecodeAllMipMapsStream()
{
encoder.OutputOptions.GenerateMipMaps = true;
var ktxWithMips = encoder.EncodeToKtx(ImageLoader.TestGradient1);
using var ms = new MemoryStream();
ktxWithMips.Write(ms);
ms.Position = 0;
var images = decoder.DecodeAllMipMapsToImageRgba32(ms);
Assert.Equal((int)ktxWithMips.header.NumberOfMipmapLevels, images.Length);
foreach (var img in images) img.Dispose();
}
[Fact]
public void DecodeRaw()
{
using var decoded = decoder.DecodeRawToImageRgba32(rawEncoded, original.Width, original.Height, CompressionFormat.Bc1);
Assert.Equal(original.Width, decoded.Width);
Assert.Equal(original.Height, decoded.Height);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public void DecodeRawStream()
{
using var ms = new MemoryStream(rawEncoded);
using var decoded = decoder.DecodeRawToImageRgba32(ms, original.Width, original.Height, CompressionFormat.Bc1);
Assert.Equal(original.Width, decoded.Width);
Assert.Equal(original.Height, decoded.Height);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task DecodeKtxFileAsync()
{
using var decoded = await decoder.DecodeToImageRgba32Async(encodedKtx);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task DecodeDdsFileAsync()
{
using var decoded = await decoder.DecodeToImageRgba32Async(encodedDds);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task DecodeStreamAsync()
{
using var ms = new MemoryStream();
encodedKtx.Write(ms);
ms.Position = 0;
using var decoded = await decoder.DecodeToImageRgba32Async(ms);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task DecodeAllMipMapsKtxAsync()
{
encoder.OutputOptions.GenerateMipMaps = true;
var ktxWithMips = encoder.EncodeToKtx(ImageLoader.TestGradient1);
var images = await decoder.DecodeAllMipMapsToImageRgba32Async(ktxWithMips);
Assert.Equal((int)ktxWithMips.header.NumberOfMipmapLevels, images.Length);
Assert.True(images.Length > 1);
foreach (var img in images) img.Dispose();
}
[Fact]
public async Task DecodeAllMipMapsStreamAsync()
{
encoder.OutputOptions.GenerateMipMaps = true;
var ktxWithMips = encoder.EncodeToKtx(ImageLoader.TestGradient1);
using var ms = new MemoryStream();
ktxWithMips.Write(ms);
ms.Position = 0;
var images = await decoder.DecodeAllMipMapsToImageRgba32Async(ms);
Assert.Equal((int)ktxWithMips.header.NumberOfMipmapLevels, images.Length);
foreach (var img in images) img.Dispose();
}
[Fact]
public async Task DecodeRawAsync()
{
using var decoded = await decoder.DecodeRawToImageRgba32Async(rawEncoded, original.Width, original.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
[Fact]
public async Task DecodeRawStreamAsync()
{
using var ms = new MemoryStream(rawEncoded);
using var decoded = await decoder.DecodeRawToImageRgba32Async(ms, original.Width, original.Height, CompressionFormat.Bc1);
TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);
}
}
}
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