Convert to webp using imagick

[Alerinos]

How to add a new format? I use imagick which converts my format to webp + creates compression.

var small = new MagickImage(GET FILE DIR);
small.Resize("GET &width", "GET &height");
small.Format = MagickFormat.WebP;
small.Quality = GET &quality;
small.Write($"GET CACHE NAME");

How to execute this code to save itself as cache?
Or how is your work progress on the webp?

[KimPiks]

I have the same problem

[JimBobSquarePants]

You need to implement your own IImageDecoder and IImageEncoder instances and register them against the configuration.

See the reference codec from our ImageSharp unit tests for examples.

https://github.com/SixLabors/ImageSharp/tree/dc0982f1864b0c41fcc1a79853b3d16746906835/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs

[Alerinos]

May I have more details or some example of how to register this in asp.net? I'm not that experienced on asp.net, thank you so much!

[Alerinos]

services.AddImageSharp()
                .AddProcessor<ImageSharpWebP>();

    public class ImageSharpWebP : IImageEncoder, IImageWebProcessor
    {
        private readonly System.Drawing.Imaging.ImageFormat imageFormat;

        public ImageSharpWebP(ImageFormat imageFormat)
        {
            this.imageFormat = imageFormat;
        }

        public IEnumerable<string> Commands => throw new NotImplementedException();

        public void Encode<TPixel>(Image<TPixel> image, Stream stream) where TPixel : unmanaged, IPixel<TPixel>
        {
            throw new NotImplementedException();
        }

        public Task EncodeAsync<TPixel>(Image<TPixel> image, Stream stream, CancellationToken cancellationToken) where TPixel : unmanaged, IPixel<TPixel>
        {
            throw new NotImplementedException();
        }

        public FormattedImage Process(
            FormattedImage image,
            ILogger logger,
            IDictionary<string, string> commands,
            CommandParser parser,
            CultureInfo culture)
        {
            ResizeOptions options = new ResizeOptions {};

            if (options != null)
            {
                image.Image.Mutate(x => x.Resize(options));
            }

            return image;
        }

    }

System.AggregateException: „Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: SixLabors.ImageSharp.Web.Processors.IImageWebProcessor Lifetime: Singleton ImplementationType: net_core_www.Core.Lib.ImageSharpWebP': Unable to resolve service for type 'System.Drawing.Imaging.ImageFormat' while attempting to activate 'net_core_www.Core.Lib.ImageSharpWebP'.)”

What am I doing wrong?

[JimBobSquarePants]

You’re not following my advice not samples I’ve linked to.

You need to register the encoder with the Configuration class. Instead you’ve incorrectly registered it as a processor. You’re also injecting an unresolvable System.Drawing ImageFormat instance into the constructor for some reason (The error message is explicitly telling you this). ImageSharp has nothing to do with System.Drawing so I do not understand why you would be doing that.

I suggest you take your time to a study the API and complementary docs and the code so that you understand what you are working with.

[JimBobSquarePants]

@Alerinos Looks like someone has already written a wrapper for a webp encoder and published it on NuGet. You could use that until we release ours.

https://www.nuget.org/packages/Shorthand.ImageSharp.WebP/

[Alerinos]

Thanks for your help, I'm already testing. Do you need to register for this to work?

[JimBobSquarePants]

You need to register any encoder with the Configuration class as I described above. See the reference codecs I linked to in the ImageSharp unit tests for an example.