ImageSharp/src/ImageSharp/Formats/Jpeg/JpegEncoder.cs

// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.

using System.IO;
using System.Threading;
using System.Threading.Tasks;
using SixLabors.ImageSharp.PixelFormats;

namespace SixLabors.ImageSharp.Formats.Jpeg
{
    /// <summary>
    /// Encoder for writing the data image to a stream in jpeg format.
    /// </summary>
    public sealed class JpegEncoder : IImageEncoder, IJpegEncoderOptions
    {
        /// <inheritdoc/>
        public int? Quality { get; set; }

        /// <inheritdoc/>
        public JpegColorType? ColorType { get; set; }

        /// <summary>
        /// Encodes the image to the specified stream from the <see cref="Image{TPixel}"/>.
        /// </summary>
        /// <typeparam name="TPixel">The pixel format.</typeparam>
        /// <param name="image">The <see cref="Image{TPixel}"/> to encode from.</param>
        /// <param name="stream">The <see cref="Stream"/> to encode the image data to.</param>
        public void Encode<TPixel>(Image<TPixel> image, Stream stream)
        where TPixel : unmanaged, IPixel<TPixel>
        {
            var encoder = new JpegEncoderCore(this);
            encoder.Encode(image, stream);
        }

        /// <summary>
        /// Encodes the image to the specified stream from the <see cref="Image{TPixel}"/>.
        /// </summary>
        /// <typeparam name="TPixel">The pixel format.</typeparam>
        /// <param name="image">The <see cref="Image{TPixel}"/> to encode from.</param>
        /// <param name="stream">The <see cref="Stream"/> to encode the image data to.</param>
        /// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
        /// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
        public Task EncodeAsync<TPixel>(Image<TPixel> image, Stream stream, CancellationToken cancellationToken)
            where TPixel : unmanaged, IPixel<TPixel>
        {
            var encoder = new JpegEncoderCore(this);
            return encoder.EncodeAsync(image, stream, cancellationToken);
        }
    }
}