private static void SaveTempImage(CIImage fullimage, UIImage image, string outputFilename, int quality, bool rotate)
{
var imageData = image.AsJPEG(quality);
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var options = new CGImageDestinationOptions();
if (fullimage.Properties.DPIWidthF != null)
{
options.Dictionary[ImageIO.CGImageProperties.DPIWidth] =
new NSNumber((nfloat)fullimage.Properties.DPIWidthF);
}
if (fullimage.Properties.DPIWidthF != null)
{
options.Dictionary[ImageIO.CGImageProperties.DPIHeight] =
new NSNumber((nfloat)fullimage.Properties.DPIHeightF);
}
options.ExifDictionary = fullimage.Properties?.Exif ?? new CGImagePropertiesExif();
options.TiffDictionary = fullimage.Properties?.Tiff ?? new CGImagePropertiesTiff();
options.GpsDictionary = fullimage.Properties?.Gps ?? new CGImagePropertiesGps();
options.JfifDictionary = fullimage.Properties?.Jfif ?? new CGImagePropertiesJfif();
options.IptcDictionary = fullimage.Properties?.Iptc ?? new CGImagePropertiesIptc();
if (rotate)
{
options.Dictionary[ImageIO.CGImageProperties.Orientation] =
new NSString(UIImageOrientation.Up.ToString());
var tiffDict = new CGImagePropertiesTiff();
foreach (KeyValuePair <NSObject, NSObject> x in options.TiffDictionary.Dictionary)
{
tiffDict.Dictionary.SetValueForKey(x.Value, x.Key as NSString);
}
tiffDict.Dictionary.SetValueForKey(new NSNumber(1), new NSString("Orientation"));
options.TiffDictionary = tiffDict;
}
else
{
if (fullimage.Properties.Orientation != null)
{
options.Dictionary[ImageIO.CGImageProperties.Orientation] =
new NSString(image.Orientation.ToString());
}
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, options);
var success = destination.Close();
if (success)
{
imageWithExif.Save(outputFilename, true);
}
else
{
imageData.Save(outputFilename, true);
}
}
protected override Task <PImage> GenerateImageFromDecoderContainerAsync(IDecodedImage <PImage> decoded, ImageInformation imageInformation, bool isPlaceholder)
{
PImage result;
if (decoded.IsAnimated)
{
#if __IOS__
result = PImage.CreateAnimatedImage(decoded.AnimatedImages
.Select(v => v.Image)
.Where(v => v?.CGImage != null).ToArray(), decoded.AnimatedImages.Sum(v => v.Delay) / 100.0);
#elif __MACOS__
using (var mutableData = NSMutableData.Create())
{
var fileOptions = new CGImageDestinationOptions
{
GifDictionary = new NSMutableDictionary()
};
fileOptions.GifDictionary[ImageIO.CGImageProperties.GIFLoopCount] = new NSString("0");
//options.GifDictionary[ImageIO.CGImageProperties.GIFHasGlobalColorMap] = new NSString("true");
using (var destintation = CGImageDestination.Create(mutableData, MobileCoreServices.UTType.GIF, decoded.AnimatedImages.Length, fileOptions))
{
for (var i = 0; i < decoded.AnimatedImages.Length; i++)
{
var options = new CGImageDestinationOptions
{
GifDictionary = new NSMutableDictionary()
};
options.GifDictionary[ImageIO.CGImageProperties.GIFUnclampedDelayTime] = new NSString(decoded.AnimatedImages[i].Delay.ToString());
destintation.AddImage(decoded.AnimatedImages[i].Image.CGImage, options);
}
destintation.Close();
}
result = new PImage(mutableData);
// TODO I really don't know why representations count is 1, anyone?
// var test = result.Representations();
}
#endif
}
else
{
result = decoded.Image;
}
return(Task.FromResult(result));
}
public string CreateGif(string frame1Path, string frame2Path, string frame3Path, string frame4Path, string webId, string path = "")
{
List <UIImage> listOfFrame = new List <UIImage>();
UIImage image1 = new UIImage(frame1Path);
listOfFrame.Add(image1);
UIImage image2 = new UIImage(frame2Path);
listOfFrame.Add(image2);
UIImage image3 = new UIImage(frame3Path);
listOfFrame.Add(image3);
UIImage image4 = new UIImage(frame4Path);
listOfFrame.Add(image4);
NSMutableDictionary fileProperties = new NSMutableDictionary
{
{ CGImageProperties.GIFLoopCount, new NSNumber(1) }
};
NSUrl documentsDirectoryUrl = NSFileManager.DefaultManager.GetUrl(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User, null, true, out _);
NSUrl fileUrl = documentsDirectoryUrl.Append(webId + ".gif", false);
var destination = CGImageDestination.Create(fileUrl, MobileCoreServices.UTType.GIF, 4);
destination.SetProperties(fileProperties);
foreach (var frame in listOfFrame)
{
//difference is here, i create a var option and i set the
//GifDictionary
var options = new CGImageDestinationOptions();
options.GifDictionary = new NSMutableDictionary();
options.GifDictionary[CGImageProperties.GIFDelayTime] = new NSNumber(1f);
var cgImage = frame.CGImage;
if (cgImage != null)
{
destination.AddImage(cgImage, options);
}
}
if (!destination.Close())
{
Console.WriteLine("Failed to finalize the image destination");
}
return(fileUrl.Path);
}
private bool SaveImageWithMetadata(UIImage image, float quality, NSDictionary meta, string path)
{
var imageData = image.AsJPEG(quality);
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var destinationOptions = new CGImageDestinationOptions();
if (meta.ContainsKey(ImageIO.CGImageProperties.ExifDictionary))
{
destinationOptions.ExifDictionary =
new CGImagePropertiesExif(meta[ImageIO.CGImageProperties.ExifDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.TIFFDictionary))
{
destinationOptions.TiffDictionary = new CGImagePropertiesTiff(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.GPSDictionary))
{
destinationOptions.GpsDictionary =
new CGImagePropertiesGps(meta[ImageIO.CGImageProperties.GPSDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.JFIFDictionary))
{
destinationOptions.JfifDictionary =
new CGImagePropertiesJfif(meta[ImageIO.CGImageProperties.JFIFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.IPTCDictionary))
{
destinationOptions.IptcDictionary =
new CGImagePropertiesIptc(meta[ImageIO.CGImageProperties.IPTCDictionary] as NSDictionary);
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, destinationOptions);
var success = destination.Close();
if (success)
{
imageWithExif.Save(path, true);
}
return(success);
}
protected override Task <PImage> GenerateImageFromDecoderContainerAsync(IDecodedImage <PImage> decoded, ImageInformation imageInformation, bool isPlaceholder)
{
PImage result;
if (decoded.IsAnimated)
{
#if __IOS__
result = PImage.CreateAnimatedImage(decoded.AnimatedImages
.Select(v => v.Image)
.Where(v => v?.CGImage != null).ToArray(), decoded.AnimatedImages.Sum(v => v.Delay) / 100.0);
#elif __MACOS__
using (var mutableData = NSMutableData.Create())
{
using (var destintation = CGImageDestination.Create(mutableData, MobileCoreServices.UTType.GIF, decoded.AnimatedImages.Length))
{
for (int i = 0; i < decoded.AnimatedImages.Length; i++)
{
var options = new CGImageDestinationOptions();
options.GifDictionary = new NSMutableDictionary();
options.GifDictionary[ImageIO.CGImageProperties.GIFDelayTime] = NSNumber.FromDouble(decoded.AnimatedImages[i].Delay / 100.0d);
destintation.AddImage(decoded.AnimatedImages[i].Image.CGImage, options);
}
destintation.Close();
}
// TODO I really don't know why it's not working. Anyone?
result = new PImage(mutableData);
}
#endif
}
else
{
result = decoded.Image;
}
return(Task.FromResult(result));
}
private bool SaveImageWithMetadata(UIImage image, float quality, NSDictionary meta, string path)
{
try
{
var finalQuality = quality;
var imageData = image.AsJPEG(finalQuality);
//continue to move down quality , rare instances
while (imageData == null && finalQuality > 0)
{
finalQuality -= 0.05f;
imageData = image.AsJPEG(finalQuality);
}
if (imageData == null)
{
throw new NullReferenceException("Unable to convert image to jpeg, please ensure file exists or lower quality level");
}
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var destinationOptions = new CGImageDestinationOptions();
if (meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.Orientation] = meta[ImageIO.CGImageProperties.Orientation];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIWidth))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIWidth] = meta[ImageIO.CGImageProperties.DPIWidth];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIHeight))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIHeight] = meta[ImageIO.CGImageProperties.DPIHeight];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.ExifDictionary))
{
destinationOptions.ExifDictionary =
new CGImagePropertiesExif(meta[ImageIO.CGImageProperties.ExifDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.TIFFDictionary))
{
destinationOptions.TiffDictionary = new CGImagePropertiesTiff(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.GPSDictionary))
{
destinationOptions.GpsDictionary =
new CGImagePropertiesGps(meta[ImageIO.CGImageProperties.GPSDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.JFIFDictionary))
{
destinationOptions.JfifDictionary =
new CGImagePropertiesJfif(meta[ImageIO.CGImageProperties.JFIFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.IPTCDictionary))
{
destinationOptions.IptcDictionary =
new CGImagePropertiesIptc(meta[ImageIO.CGImageProperties.IPTCDictionary] as NSDictionary);
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, destinationOptions);
var success = destination.Close();
if (success)
{
imageWithExif.Save(path, true);
}
return(success);
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save image with metadata: {ex}");
}
return(false);
}
internal static bool SaveImageWithMetadata(UIImage image, float quality, NSDictionary meta, string path, string pathExtension)
{
if (UIDevice.CurrentDevice.CheckSystemVersion(13, 0))
{
return(SaveImageWithMetadataiOS13(image, quality, meta, path, pathExtension));
}
try
{
pathExtension = pathExtension.ToLowerInvariant();
var finalQuality = quality;
var imageData = pathExtension == "jpg" ? image.AsJPEG(finalQuality) : image.AsPNG();
//continue to move down quality , rare instances
while (imageData == null && finalQuality > 0)
{
finalQuality -= 0.05f;
imageData = image.AsJPEG(finalQuality);
}
if (imageData == null)
{
throw new NullReferenceException("Unable to convert image to jpeg, please ensure file exists or lower quality level");
}
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var destinationOptions = new CGImageDestinationOptions();
if (meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.Orientation] = meta[ImageIO.CGImageProperties.Orientation];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIWidth))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIWidth] = meta[ImageIO.CGImageProperties.DPIWidth];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIHeight))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIHeight] = meta[ImageIO.CGImageProperties.DPIHeight];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.ExifDictionary))
{
destinationOptions.ExifDictionary =
new CGImagePropertiesExif(meta[ImageIO.CGImageProperties.ExifDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.TIFFDictionary))
{
var existingTiffDict = meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary;
if (existingTiffDict != null)
{
var newTiffDict = new NSMutableDictionary();
newTiffDict.SetValuesForKeysWithDictionary(existingTiffDict);
newTiffDict.SetValueForKey(meta[ImageIO.CGImageProperties.Orientation], ImageIO.CGImageProperties.TIFFOrientation);
destinationOptions.TiffDictionary = new CGImagePropertiesTiff(newTiffDict);
}
}
if (meta.ContainsKey(ImageIO.CGImageProperties.GPSDictionary))
{
destinationOptions.GpsDictionary =
new CGImagePropertiesGps(meta[ImageIO.CGImageProperties.GPSDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.JFIFDictionary))
{
destinationOptions.JfifDictionary =
new CGImagePropertiesJfif(meta[ImageIO.CGImageProperties.JFIFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.IPTCDictionary))
{
destinationOptions.IptcDictionary =
new CGImagePropertiesIptc(meta[ImageIO.CGImageProperties.IPTCDictionary] as NSDictionary);
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, destinationOptions);
var success = destination.Close();
if (success)
{
var saved = imageWithExif.Save(path, true, out NSError error);
if (error != null)
{
Debug.WriteLine($"Unable to save exif data: {error.ToString()}");
}
imageWithExif.Dispose();
imageWithExif = null;
}
return(success);
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save image with metadata: {ex}");
}
return(false);
}
private bool SaveImageWithMetadata(UIImage image, float quality, NSDictionary meta, string path)
{
try
{
var imageData = GetImageWithQuality(quality, image);
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var destinationOptions = new CGImageDestinationOptions();
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIWidth))
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIWidth] = meta[ImageIO.CGImageProperties.DPIWidth];
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIHeight))
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIHeight] = meta[ImageIO.CGImageProperties.DPIHeight];
if (meta.ContainsKey(ImageIO.CGImageProperties.ExifDictionary))
{
destinationOptions.ExifDictionary =
new CGImagePropertiesExif(meta[ImageIO.CGImageProperties.ExifDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.TIFFDictionary))
{
destinationOptions.TiffDictionary = new CGImagePropertiesTiff(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.GPSDictionary))
{
destinationOptions.GpsDictionary =
new CGImagePropertiesGps(meta[ImageIO.CGImageProperties.GPSDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.JFIFDictionary))
{
destinationOptions.JfifDictionary =
new CGImagePropertiesJfif(meta[ImageIO.CGImageProperties.JFIFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.IPTCDictionary))
{
destinationOptions.IptcDictionary =
new CGImagePropertiesIptc(meta[ImageIO.CGImageProperties.IPTCDictionary] as NSDictionary);
}
if (options.RotateImage)
{
if (meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
destinationOptions.Dictionary[ImageIO.CGImageProperties.Orientation] = new NSString(UIImageOrientation.Up.ToString());
destinationOptions.TiffDictionary.Orientation = CoreImage.CIImageOrientation.TopLeft;
}
else
{
if (meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
destinationOptions.Dictionary[ImageIO.CGImageProperties.Orientation] = meta[ImageIO.CGImageProperties.Orientation];
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, destinationOptions);
var success = destination.Close();
if (success)
{
imageWithExif.Save(path, true);
}
return success;
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save image with metadata: {ex}");
}
return false;
}