using System;

using System.IO;

using System.Threading.Tasks;

using BCnEncoder.Decoder;

using BCnEncoder.Encoder;

using BCnEncoder.Shared;

using BCnEncTests.Support;

using CommunityToolkit.HighPerformance;

using Xunit;

namespace BCnEncTests

{

public class DecodingAsyncTests

{

[Fact]

public async Task DecodeAsync()

{

var decoder = new BcDecoder();

var encoder = new BcEncoder();

var original = ImageLoader.TestGradient1;

var file = encoder.EncodeToKtx(original);

var image = await decoder.Decode2DAsync(file);

TestHelper.AssertImagesEqual(original, image, encoder.OutputOptions.Quality);

}

[Fact]

public async Task DecodeAllMipMapsAsync()

{

var decoder = new BcDecoder();

var encoder = new BcEncoder();

var original = ImageLoader.TestGradient1;

var file = encoder.EncodeToKtx(original);

var images = await decoder.DecodeAllMipMaps2DAsync(file);

TestHelper.AssertImagesEqual(original, images[0], encoder.OutputOptions.Quality);

}

[Fact]

public async Task DecodeRawAsync()

{

var decoder = new BcDecoder();

var encoder = new BcEncoder();

var original = ImageLoader.TestGradient1;

var file = encoder.EncodeToKtx(original);

var rawBytes = file.MipMaps[0].Faces[0].Data;

var mipWidth = (int)file.MipMaps[0].Width;

var mipHeight = (int)file.MipMaps[0].Height;

var decoded = await Task.Run(() =>

{

var pixels = decoder.DecodeRaw(rawBytes, mipWidth, mipHeight, CompressionFormat.Bc1);

return new Memory2D<ColorRgba32>(pixels, mipHeight, mipWidth);

});

TestHelper.AssertImagesEqual(original, decoded, encoder.OutputOptions.Quality);

}

}

}