/// <summary>
/// Initializes a new instance of the <see cref="GifDecoder"/> class.
/// </summary>
/// <param name="image">The image to decode.</param>
public GifDecoder(Gif image)
{
this.image = image;
this.ActiveFrameIndex = 0;
if (ImageAnimator.CanAnimate(image))
{
this.IsAnimated = true;
this.FrameCount = image.Image.GetFrameCount(FrameDimension.Time);
const int LoopCount = (int)ExifPropertyTag.LoopCount;
const int FrameDelay = (int)ExifPropertyTag.FrameDelay;
// Loop info is stored at byte 20737. Default to infinite loop if not found.
this.LoopCount = Array.IndexOf(image.Image.PropertyIdList, LoopCount) != -1
? BitConverter.ToInt16(image.Image.GetPropertyItem(LoopCount).Value, 0)
: 0;
// Get the times stored in the gif. Default to 0 if not found.
if (Array.IndexOf(this.image.Image.PropertyIdList, FrameDelay) != -1)
{
this.times = this.image.Image.GetPropertyItem(FrameDelay).Value;
}
}
else
{
this.FrameCount = 1;
}
}
/// <summary>
/// Saves an image.
/// </summary>
/// <param name="img"> The image to save. </param>
/// <param name="path"> The path to save the image. </param>
/// <param name="collectGarbage"> A bool indicating if GC.Collect should be called after saving. </param>
/// <returns> true if the image was saved successfully, else false </returns>
public static bool SaveImage(Image img, string path, bool collectGarbage = true)
{
if (img == null || string.IsNullOrEmpty(path))
{
return(false);
}
PathHelper.CreateDirectoryFromFilePath(path);
try
{
switch (GetImageFormatFromPath(path))
{
default:
case ImgFormat.png:
PNG.Save(img, path);
return(true);
case ImgFormat.jpg:
JPEG.Save(img, path, InternalSettings.Jpeg_Quality);
return(true);
case ImgFormat.bmp:
BMP.Save(img, path);
return(true);
case ImgFormat.gif:
Gif.Save(img, path);
return(true);
case ImgFormat.tif:
TIFF.Save(img, path);
return(true);
case ImgFormat.wrm:
WORM.Save(img, path);
return(true);
case ImgFormat.webp:
Webp.Save(img, path, InternalSettings.WebpQuality_Default);
return(true);
}
}
catch (Exception e)
{
if (ShowExceptions)
{
e.ShowError();
}
return(false);
}
finally
{
if (collectGarbage)
{
GC.Collect();
}
}
}
public static void Save(Image image, string path)
{
try
{
PathHelper.CreateDirectoryFromFilePath(path);
Gif g = new Gif(image);
g.Save(path);
}
catch (Exception ex)
{
throw new Exception(ex.Message + "\r\nIn Gif.Save(Image, string)");
}
}
public static IMAGE LoadImage(string path, bool showError = false)
{
if (string.IsNullOrEmpty(path) || !File.Exists(path))
{
return(null);
}
ImgFormat fmt = GetImageFormat(path);
try
{
switch (fmt)
{
case ImgFormat.png:
PNG png = new PNG();
png.Load(path);
return(png);
case ImgFormat.bmp:
BMP bmp = new BMP();
bmp.Load(path);
return(bmp);
case ImgFormat.gif:
Gif gif = new Gif();
gif.Load(path);
return(gif);
case ImgFormat.jpg:
JPEG jpeg = new JPEG();
jpeg.Load(path);
return(jpeg);
case ImgFormat.tif:
TIFF tiff = new TIFF();
tiff.Load(path);
return(tiff);
case ImgFormat.webp:
Webp webp = new Webp();
webp.Load(path);
return(webp);
case ImgFormat.wrm:
WORM worm = new WORM();
worm.Load(path);
return(worm);
case ImgFormat.ico:
ICO ico = new ICO();
ico.Load(path);
return(ico);
}
}
catch (Exception e)
{
if (showError)
{
e.ShowError();
}
}
return(null);
}
/// <summary>
/// Loads an image.
/// </summary>
/// <param name="path"> The path to the image. </param>
/// <returns> A bitmap object if the image is loaded, otherwise null. </returns>
public static Bitmap LoadImageAsBitmap(string path, bool showError = false)
{
if (string.IsNullOrEmpty(path) || !File.Exists(path))
{
return(null);
}
ImgFormat fmt = GetImageFormat(path);
if (fmt == ImgFormat.nil)
{
fmt = GetImageFormatFromPath(path);
}
try
{
Bitmap result;
switch (fmt)
{
case ImgFormat.png:
result = PNG.FromFileAsBitmap(path);
result.Tag = ImgFormat.png;
return(result);
case ImgFormat.bmp:
result = BMP.FromFileAsBitmap(path);
result.Tag = ImgFormat.bmp;
return(result);
case ImgFormat.gif:
result = Gif.FromFileAsBitmap(path);
result.Tag = ImgFormat.gif;
return(result);
case ImgFormat.jpg:
result = JPEG.FromFileAsBitmap(path);
result.Tag = ImgFormat.jpg;
return(result);
case ImgFormat.tif:
result = TIFF.FromFileAsBitmap(path);
result.Tag = ImgFormat.tif;
return(result);
case ImgFormat.webp:
result = Webp.FromFileAsBitmap(path);
result.Tag = ImgFormat.webp;
return(result);
case ImgFormat.wrm:
result = WORM.FromFileAsBitmap(path);
result.Tag = ImgFormat.wrm;
return(result);
case ImgFormat.ico:
result = ICO.FromFileAsBitmap(path);
result.Tag = ImgFormat.ico;
return(result);
}
}
catch (Exception e)
{
if (showError)
{
e.ShowError();
}
}
return(null);
}