public IEncoder CreateIfSuitable(ResizeSettings settings, object original)
{
ImageFormat requestedFormat = DefaultEncoder.GetRequestedFormat(settings.Format, ImageFormat.Jpeg);
if (requestedFormat == null || !IsValidOutputFormat(requestedFormat))
{
return(null); //An unsupported format was explicitly specified.
}
if (!"wic".Equals(settings["encoder"], StringComparison.OrdinalIgnoreCase))
{
return(null);
}
return(new WicEncoderPlugin(settings, original));
}
public ImageFormat GetFormatIfSuitable(ResizeSettings settings, object original)
{
//What format was the image originally (used as a fallback).
ImageFormat originalFormat = DefaultEncoder.GetOriginalFormat(original);
if (!IsValidOutputFormat(originalFormat))
{
originalFormat = null; //No valid info available about the original format.
}
//What format was specified?
ImageFormat requestedFormat = DefaultEncoder.GetRequestedFormat(settings.Format, originalFormat); //fallback to originalFormat if not specified.
if (IsValidOutputFormat(requestedFormat))
{
return(requestedFormat);
}
return(null);
}
public FreeImageEncoderPlugin(ResizeSettings settings, object original)
{
ImageFormat originalFormat = DefaultEncoder.GetOriginalFormat(original);
if (!IsValidOutputFormat(originalFormat))
{
originalFormat = ImageFormat.Jpeg; //No valid info available about the original format. Use Jpeg.
}
//What format was specified?
ImageFormat requestedFormat = DefaultEncoder.GetRequestedFormat(settings.Format, originalFormat); //fallback to originalFormat if not specified.
if (!IsValidOutputFormat(requestedFormat))
{
throw new ArgumentException("An unrecognized or unsupported output format (" + (settings.Format != null ? settings.Format : "(null)") + ") was specified in 'settings'.");
}
this.format = FreeImage.GetFormat(requestedFormat);
//Parse JPEG settings.
int quality = 90;
if (string.IsNullOrEmpty(settings["quality"]) || !int.TryParse(settings["quality"], NumberStyles.Number, NumberFormatInfo.InvariantInfo, out quality))
{
quality = 90;
}
if (format == FREE_IMAGE_FORMAT.FIF_JPEG)
{
if (quality >= 100)
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYSUPERB;
}
else if (quality >= 75)
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYGOOD;
}
else if (quality >= 50)
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYNORMAL;
}
else if (quality >= 25)
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYAVERAGE;
}
else
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYBAD;
}
if ("true".Equals(settings["progressive"]))
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_PROGRESSIVE;
}
if ("411".Equals(settings["subsampling"]))
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_411;
}
if ("420".Equals(settings["subsampling"]))
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_420;
}
if ("422".Equals(settings["subsampling"]))
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_422;
}
if ("444".Equals(settings["subsampling"]))
{
encodingOptions |= FREE_IMAGE_SAVE_FLAGS.JPEG_SUBSAMPLING_444;
}
}
if (string.IsNullOrEmpty(settings["colors"]) || !int.TryParse(settings["colors"], NumberStyles.Number, NumberFormatInfo.InvariantInfo, out colors))
{
colors = -1;
}
if (format == FREE_IMAGE_FORMAT.FIF_GIF)
{
//encodingOptions = FREE_IMAGE_SAVE_FLAGS.
}
}