/// <summary>
/// Applies the given processor the current image.
/// </summary>
/// <param name="processor">The processor delegate.</param>
/// <param name="factory">The <see cref="ImageFactory" />.</param>
public override void ApplyProcessor(Func<ImageFactory, Image> processor, ImageFactory factory)
{
GifDecoder decoder = new GifDecoder(factory.Image, factory.AnimationProcessMode);
Image factoryImage = factory.Image;
GifEncoder encoder = new GifEncoder(null, null, decoder.LoopCount);
for (int i = 0; i < decoder.FrameCount; i++)
{
GifFrame frame = decoder.GetFrame(factoryImage, i);
factory.Image = frame.Image;
frame.Image = this.Quantizer.Quantize(processor.Invoke(factory));
encoder.AddFrame(frame);
}
factoryImage.Dispose();
factory.Image = encoder.Save();
}
/// <inheritdoc />
public override Image Save(string path, Image image, long bitDepth)
{
// Never use default save for gifs. It's terrible.
using (FileStream fs = File.OpenWrite(path))
{
var decoder = new GifDecoder(image, AnimationProcessMode.All);
var encoder = new GifEncoder(null, null, decoder.LoopCount);
for (int i = 0; i < decoder.FrameCount; i++)
{
GifFrame frame = decoder.GetFrame(image, i);
frame.Image = this.Quantizer.Quantize(frame.Image);
encoder.AddFrame(frame);
}
encoder.Save(fs);
return(encoder.Save());
}
}
/// <summary>
/// Applies the given processor the current image.
/// </summary>
/// <param name="processor">The processor delegate.</param>
/// <param name="factory">The <see cref="ImageFactory" />.</param>
public override void ApplyProcessor(Func <ImageFactory, Image> processor, ImageFactory factory)
{
GifDecoder decoder = new GifDecoder(factory.Image);
if (decoder.IsAnimated)
{
GifEncoder encoder = new GifEncoder(null, null, decoder.LoopCount);
foreach (GifFrame frame in decoder.GifFrames)
{
factory.Image = frame.Image;
frame.Image = this.Quantizer.Quantize(processor.Invoke(factory));
encoder.AddFrame(frame);
}
factory.Image = encoder.Save();
}
else
{
base.ApplyProcessor(processor, factory);
}
}
/// <summary>
/// Creates a copy of an image allowing you to set the pixel format.
/// Disposing of the original is the responsibility of the user.
/// <remarks>
/// Unlike the native <see cref="Image.Clone"/> method this also copies animation frames.
/// </remarks>
/// </summary>
/// <param name="source">The source image to copy.</param>
/// <param name="format">The <see cref="PixelFormat"/> to set the copied image to.</param>
/// <returns>
/// The <see cref="Image"/>.
/// </returns>
public static Image Copy(this Image source, PixelFormat format = PixelFormat.Format32bppPArgb)
{
if (FormatUtilities.IsAnimated(source))
{
// TODO: Ensure that we handle other animated types.
GifDecoder decoder = new GifDecoder(source);
GifEncoder encoder = new GifEncoder(null, null, decoder.LoopCount);
foreach (GifFrame frame in decoder.GifFrames)
{
frame.Image = ((Bitmap)frame.Image).Clone(new Rectangle(0, 0, frame.Image.Width, frame.Image.Height), format);
((Bitmap)frame.Image).SetResolution(source.HorizontalResolution, source.VerticalResolution);
encoder.AddFrame(frame);
}
return encoder.Save();
}
Bitmap copy = ((Bitmap)source).Clone(new Rectangle(0, 0, source.Width, source.Height), format);
copy.SetResolution(source.HorizontalResolution, source.VerticalResolution);
return copy;
}
/// <summary>
/// Creates a deep copy of an image allowing you to set the pixel format.
/// Disposing of the original is the responsibility of the user.
/// <remarks>
/// Unlike the native <see cref="Image.Clone"/> method this also copies animation frames.
/// </remarks>
/// </summary>
/// <param name="source">The source image to copy.</param>
/// <param name="animationProcessMode">The process mode for frames in animated images.</param>
/// <param name="format">The <see cref="PixelFormat"/> to set the copied image to.</param>
/// <param name="preserveExifData">Whether to preserve exif metadata. Defaults to false.</param>
/// <returns>
/// The <see cref="Image"/>.
/// </returns>
public static Image Copy(this Image source, AnimationProcessMode animationProcessMode, PixelFormat format = PixelFormat.Format32bppPArgb, bool preserveExifData = false)
{
if (source.RawFormat.Equals(ImageFormat.Gif))
{
// Read from the correct first frame when performing additional processing
source.SelectActiveFrame(FrameDimension.Time, 0);
GifDecoder decoder = new GifDecoder(source, animationProcessMode);
GifEncoder encoder = new GifEncoder(null, null, decoder.LoopCount);
// Have to use Octree here, there's no way to inject it.
OctreeQuantizer quantizer = new OctreeQuantizer();
for (int i = 0; i < decoder.FrameCount; i++)
{
GifFrame frame = decoder.GetFrame(source, i);
frame.Image = quantizer.Quantize(((Bitmap)frame.Image).Clone(new Rectangle(0, 0, frame.Image.Width, frame.Image.Height), format));
((Bitmap)frame.Image).SetResolution(source.HorizontalResolution, source.VerticalResolution);
encoder.AddFrame(frame);
}
return encoder.Save();
}
// Create a new image and copy it's pixels.
Bitmap copy = new Bitmap(source.Width, source.Height, format);
copy.SetResolution(source.HorizontalResolution, source.VerticalResolution);
using (Graphics graphics = Graphics.FromImage(copy))
{
graphics.DrawImageUnscaled(source, 0, 0);
}
if (preserveExifData)
{
foreach (PropertyItem item in source.PropertyItems)
{
copy.SetPropertyItem(item);
}
}
return copy;
}
/// <summary>
/// Applies the given processor the current image.
/// </summary>
/// <param name="processor">The processor delegate.</param>
/// <param name="factory">The <see cref="ImageFactory" />.</param>
public override void ApplyProcessor(Func<ImageFactory, Image> processor, ImageFactory factory)
{
GifDecoder decoder = new GifDecoder(factory.Image);
if (decoder.IsAnimated)
{
GifEncoder encoder = new GifEncoder(null, null, decoder.LoopCount);
foreach (GifFrame frame in decoder.GifFrames)
{
factory.Image = frame.Image;
frame.Image = this.Quantizer.Quantize(processor.Invoke(factory));
encoder.AddFrame(frame);
}
factory.Image = encoder.Save();
}
else
{
base.ApplyProcessor(processor, factory);
}
}
