/// <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);
}
/// <inheritdoc/>
public void Encode <TColor>(Image <TColor> image, Stream stream, IEncoderOptions options)
where TColor : struct, IPixel <TColor>
{
IJpegEncoderOptions gifOptions = JpegEncoderOptions.Create(options);
this.Encode(image, stream, gifOptions);
}
public HomeController(IFileProvider fileProvider, IJpegEncoderOptions encoderOptions, IDistributedCache cache, ILogger <HomeController> logger)
{
_logger = logger;
_encoderOptions = encoderOptions;
_fileProvider = fileProvider;
_cache = cache;
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegEncoderCore"/> class.
/// </summary>
/// <param name="options">The options</param>
public JpegEncoderCore(IJpegEncoderOptions options)
{
// System.Drawing produces identical output for jpegs with a quality parameter of 0 and 1.
this.quality = options.Quality.Clamp(1, 100);
this.subsample = options.Subsample ?? (this.quality >= 91 ? JpegSubsample.Ratio444 : JpegSubsample.Ratio420);
this.ignoreMetadata = options.IgnoreMetadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegEncoderCore"/> class.
/// </summary>
/// <param name="options">The options.</param>
public JpegEncoderCore(IJpegEncoderOptions options)
{
this.quality = options.Quality;
if (IsSupportedColorType(options.ColorType))
{
this.colorType = options.ColorType;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegEncoderCore"/> class.
/// </summary>
/// <param name="options">The options</param>
public JpegEncoderCore(IJpegEncoderOptions options)
{
int quality = options.Quality;
if (quality == 0)
{
quality = 75;
}
this.quality = quality;
this.subsample = options.Subsample ?? (quality >= 91 ? JpegSubsample.Ratio444 : JpegSubsample.Ratio420);
this.ignoreMetadata = options.IgnoreMetadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegEncoderCore"/> class.
/// </summary>
/// <param name="options">The options</param>
public JpegEncoderCore(IJpegEncoderOptions options)
{
this.quality = options.Quality;
this.subsample = options.Subsample;
}
public HomeController(IHostingEnvironment env, IJpegEncoderOptions encoderOptions)
{
_encoderOptions = encoderOptions;
_fileProvider = env.WebRootFileProvider;
}
/// <summary>
/// Saves the image to the given stream with the jpeg format.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="stream">The stream to save the image to.</param>
/// <param name="options">The options for the encoder.</param>
/// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
/// <returns>
/// The <see cref="Image{TPixel}"/>.
/// </returns>
public static Image <TPixel> SaveAsJpeg <TPixel>(this Image <TPixel> source, Stream stream, IJpegEncoderOptions options)
where TPixel : struct, IPixel <TPixel>
{
JpegEncoder encoder = new JpegEncoder();
encoder.Encode(source, stream, options);
return(source);
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegEncoderCore"/> class.
/// </summary>
/// <param name="options">The options for the encoder.</param>
public JpegEncoderCore(IJpegEncoderOptions options)
{
this.options = options ?? new JpegEncoderOptions();
}
