| public static IsAnimated ( Image image ) : bool | ||
| image | Image |
/// The |
| return | bool | |
/// <summary>
/// Saves the current image to the specified file path.
/// </summary>
/// <param name="path">The path to save the image to.</param>
/// <param name="image">The
/// <see cref="T:System.Drawing.Image" /> to save.</param>
/// <returns>
/// The <see cref="T:System.Drawing.Image" />.
/// </returns>
public override Image Save(string path, Image image)
{
if (!FormatUtilities.IsAnimated(image))
{
image = this.Quantizer.Quantize(image);
}
return(base.Save(path, image));
}
/// <summary>
/// Initializes a new instance of the <see cref="GifDecoder"/> class.
/// </summary>
/// <param name="image">
/// The <see cref="Image"/> to decode.
/// </param>
public GifDecoder(Image image)
{
this.Height = image.Height;
this.Width = image.Width;
if (FormatUtilities.IsAnimated(image))
{
this.IsAnimated = true;
if (this.IsAnimated)
{
int frameCount = image.GetFrameCount(FrameDimension.Time);
int last = frameCount - 1;
double length = 0;
List <GifFrame> gifFrames = new List <GifFrame>();
// Get the times stored in the gif.
byte[] times = image.GetPropertyItem((int)ExifPropertyTag.FrameDelay).Value;
for (int i = 0; i < frameCount; i++)
{
// Convert each 4-byte chunk into an integer.
// GDI returns a single array with all delays, while Mono returns a different array for each frame.
TimeSpan delay = TimeSpan.FromMilliseconds(BitConverter.ToInt32(times, (4 * i) % times.Length) * 10);
// Find the frame
image.SelectActiveFrame(FrameDimension.Time, i);
Bitmap frame = new Bitmap(image);
frame.SetResolution(image.HorizontalResolution, image.VerticalResolution);
// TODO: Get positions.
gifFrames.Add(new GifFrame {
Delay = delay, Image = frame
});
// Reset the position.
if (i == last)
{
image.SelectActiveFrame(FrameDimension.Time, 0);
}
length += delay.TotalMilliseconds;
}
this.GifFrames = gifFrames;
this.AnimationLength = length;
// Loop info is stored at byte 20737.
this.LoopCount = BitConverter.ToInt16(image.GetPropertyItem((int)ExifPropertyTag.LoopCount).Value, 0);
this.IsLooped = this.LoopCount != 1;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GifDecoder"/> class.
/// </summary>
/// <param name="image">
/// The <see cref="Image"/> to decode.
/// </param>
/// <param name="animationProcessMode">
/// The <see cref="AnimationProcessMode" /> to use.
/// </param>
public GifDecoder(Image image, AnimationProcessMode animationProcessMode)
{
this.Height = image.Height;
this.Width = image.Width;
if (FormatUtilities.IsAnimated(image) && animationProcessMode == AnimationProcessMode.All)
{
this.IsAnimated = true;
this.FrameCount = image.GetFrameCount(FrameDimension.Time);
// Loop info is stored at byte 20737.
this.LoopCount = BitConverter.ToInt16(image.GetPropertyItem((int)ExifPropertyTag.LoopCount).Value, 0);
}
else
{
this.FrameCount = 1;
}
}