/// <summary>
/// Encodes the image to the specified stream from the <see cref="Image{TColor}"/>.
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <param name="image">The <see cref="Image{TColor}"/> to encode from.</param>
/// <param name="stream">The <see cref="Stream"/> to encode the image data to.</param>
/// <param name="options">The options for the encoder.</param>
public void Encode <TColor>(Image <TColor> image, Stream stream, IJpegEncoderOptions options)
where TColor : struct, IPixel <TColor>
{
JpegEncoderCore encode = new JpegEncoderCore(options);
encode.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>
public void Encode <TPixel>(Image <TPixel> image, Stream stream)
where TPixel : struct, IPixel <TPixel>
{
var encoder = new JpegEncoderCore(this);
encoder.Encode(image, stream);
}
/// <inheritdoc/>
public void Encode <TColor, TPacked>(Image <TColor, TPacked> image, Stream stream)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct
{
JpegEncoderCore encode = new JpegEncoderCore();
if (this.subsampleSet)
{
encode.Encode(image, stream, this.Quality, this.Subsample);
}
else
{
encode.Encode(image, stream, this.Quality, this.Quality >= 80 ? JpegSubsample.Ratio444 : JpegSubsample.Ratio420);
}
}
/// <inheritdoc/>
public void Encode <TColor>(Image <TColor> image, Stream stream)
where TColor : struct, IPackedPixel, IEquatable <TColor>
{
JpegEncoderCore encode = new JpegEncoderCore();
if (this.subsampleSet)
{
encode.Encode(image, stream, this.Quality, this.Subsample);
}
else
{
// Match Photoshop and use 4:2:0 SUpsampling at quality < 51%
encode.Encode(image, stream, this.Quality, this.Quality >= 51 ? JpegSubsample.Ratio444 : JpegSubsample.Ratio420);
}
}
/// <inheritdoc/>
public void Encode <TColor>(Image <TColor> image, Stream stream)
where TColor : struct, IPackedPixel, IEquatable <TColor>
{
// Ensure that quality can be set but has a fallback.
if (image.MetaData.Quality > 0)
{
this.Quality = image.MetaData.Quality;
}
JpegEncoderCore encode = new JpegEncoderCore();
if (this.subsampleSet)
{
encode.Encode(image, stream, this.Quality, this.Subsample);
}
else
{
// Use 4:2:0 Subsampling at quality < 91% for reduced filesize.
encode.Encode(image, stream, this.Quality, this.Quality >= 91 ? JpegSubsample.Ratio444 : JpegSubsample.Ratio420);
}
}
