/// <summary>
/// Decodes a byte array of image data given the source image in bytes, width, height, and DXGI format.
/// </summary>
/// <param name="byte[]">The byte array of the image</param>
/// <param name="Width">The width of the image in pixels.</param>
/// <param name="Height">The height of the image in pixels.</param>
/// <param name=" DDS.DXGI_FORMAT">The image format.</param>
/// <returns>Returns a byte array of decoded data. </returns>
public static byte[] DecodeBlock(byte[] data, uint Width, uint Height, TEX_FORMAT Format, PlatformSwizzle PlatformSwizzle = PlatformSwizzle.None)
{
if (data == null)
{
throw new Exception($"Data is null!");
}
if (Format <= 0)
{
throw new Exception($"Invalid Format!");
}
if (data.Length <= 0)
{
throw new Exception($"Data is empty!");
}
if (Width <= 0)
{
throw new Exception($"Invalid width size {Width}!");
}
if (Height <= 0)
{
throw new Exception($"Invalid height size {Height}!");
}
if (PlatformSwizzle == PlatformSwizzle.Platform_3DS && !IsCompressed(Format))
{
return(CTR_3DS.DecodeBlock(data, (int)Width, (int)Height, Format));
}
if (Format == TEX_FORMAT.R32G8X24_FLOAT)
{
return(ConvertBgraToRgba(DDSCompressor.DecodePixelBlock(data, (int)Width, (int)Height, DDS.DXGI_FORMAT.DXGI_FORMAT_R32G8X24_TYPELESS)));
}
if (Format == TEX_FORMAT.BC5_SNORM)
{
return(ConvertBgraToRgba(DDSCompressor.DecompressBC5(data, (int)Width, (int)Height, true, true)));
}
if (IsCompressed(Format))
{
return(ConvertBgraToRgba(DDSCompressor.DecompressBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format)));
}
else
{
//If blue channel becomes first, do not swap them!
// if (Format.ToString().StartsWith("B") || Format == TEX_FORMAT.B5G6R5_UNORM)
// return DDSCompressor.DecodePixelBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format);
if (IsAtscFormat(Format))
{
return(ConvertBgraToRgba(ASTCDecoder.DecodeToRGBA8888(data, (int)GetBlockWidth(Format), (int)GetBlockHeight(Format), 1, (int)Width, (int)Height, 1)));
}
else
{
return(ConvertBgraToRgba(DDSCompressor.DecodePixelBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format)));
}
}
}
/// <summary>
/// Decodes a byte array of image data given the source image in bytes, width, height, and DXGI format.
/// </summary>
/// <param name="byte[]">The byte array of the image</param>
/// <param name="Width">The width of the image in pixels.</param>
/// <param name="Height">The height of the image in pixels.</param>
/// <param name=" DDS.DXGI_FORMAT">The image format.</param>
/// <returns>Returns a byte array of decoded data. </returns>
public static byte[] DecodeBlock(byte[] data, uint Width, uint Height, TEX_FORMAT Format)
{
if (Format <= 0)
{
throw new Exception($"Invalid Format!");
}
if (data.Length <= 0)
{
throw new Exception($"Data is empty!");
}
if (Width <= 0)
{
throw new Exception($"Invalid width size {Width}!");
}
if (Height <= 0)
{
throw new Exception($"Invalid height size {Height}!");
}
if (Format == TEX_FORMAT.BC5)
{
return(ConvertBgraToRgba(DDSCompressor.DecompressBC5(data, (int)Width, (int)Height, true, true)));
}
if (IsCompressed(Format))
{
return(ConvertBgraToRgba(DDSCompressor.DecompressBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format)));
}
else
{
//If blue channel becomes first, do not swap them
if (Format.ToString().Contains("FORMAT_B"))
{
return(DDSCompressor.DecodePixelBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format));
}
else
{
return(ConvertBgraToRgba(DDSCompressor.DecodePixelBlock(data, (int)Width, (int)Height, (DDS.DXGI_FORMAT)Format)));
}
}
}