public void FromDataTest()
{
#if MONOMAC
NSData data = NSData.FromFile(NSBundle.MainBundle.PathForResource("xamarin2", "png"));
#else
NSData data = NSData.FromFile(filename);
#endif
using (var img = CGImageSource.FromData(data)) {
Assert.NotNull(img, "#a1");
}
using (var img = CGImageSource.FromData(data, new CGImageOptions())) {
Assert.NotNull(img, "#b1");
}
using (var img = CGImageSource.FromData(data, null)) {
Assert.NotNull(img, "#c1");
}
}
static public async Task <FormsCAKeyFrameAnimation> CreateAnimationFromUriImageSourceAsync(UriImageSource imageSource, CancellationToken cancelationToken = default(CancellationToken))
{
FormsCAKeyFrameAnimation animation = null;
if (imageSource is IStreamImageSource streamImageSource)
{
using (var streamImage = await streamImageSource.GetStreamAsync(cancelationToken).ConfigureAwait(false))
{
if (streamImage != null)
{
using (var parsedImageSource = CGImageSource.FromData(NSData.FromStream(streamImage)))
{
animation = ImageAnimationHelper.CreateAnimationFromCGImageSource(parsedImageSource);
}
}
}
}
return(animation);
}
public static UIImage LoadGIFImage(string gifImage)
{
try
{
using (NSData imgData = NSData.FromFile(gifImage))
using (CGImageSource imgSource = CGImageSource.FromData(imgData))
{
NSString gifKey = new NSString(GIFKey);
NSString gifDelayKey = new NSString(GIFDelayTimeKey);
List <double> frameDelays = new List <double>();
// Array that will hold each GIF frame.
UIImage[] frames = new UIImage[imgSource.ImageCount];
// Get all individual frames and their delay time.
for (int i = 0; i < imgSource.ImageCount; i++)
{
// Get the frame's property dictionary and the '{GIF}' dictionary from that.
using (NSDictionary frameProps = imgSource.CopyProperties(null, i))
using (NSMutableDictionary gifDict = (NSMutableDictionary)frameProps[gifKey])
{
double frameDelay = ((NSNumber)gifDict[gifDelayKey]).DoubleValue;
frameDelays.Add(frameDelay);
} //end using
// Fill the array.
using (CGImage cgImage = imgSource.CreateImage(i, null))
{
frames[i] = UIImage.FromImage(cgImage);
} //end using cgImage
} //end for
// Create animated image.
return(UIImage.CreateAnimatedImage(frames, frameDelays.Sum()));
} //end using
} catch (Exception ex)
{
// Something went wrong!
throw ex;
} //end try catch
} //end static UIImage LoadGifImage
public void CopyImageSource()
{
if (!TestRuntime.CheckSystemAndSDKVersion(7, 0))
{
Assert.Ignore("Requires iOS 7+");
}
using (NSData data = NSData.FromFile("xamarin2.png"))
using (var source = CGImageSource.FromData(data))
using (NSMutableData destData = new NSMutableData())
#if XAMCORE_2_0 // FromData => Create
using (var id = CGImageDestination.Create(destData, GoodUti, 1)) {
#else
using (var id = CGImageDestination.FromData(destData, GoodUti, 1)) {
#endif
NSError err;
// testing that null is allowed (no crash) so the fact that is return false and an error does not matter
Assert.False(id.CopyImageSource(source, (NSDictionary)null, out err), "CopyImageSource");
Assert.NotNull(err, "NSError");
}
}
private async Task LoadImage()
{
NSData bytes = null;
var s = img.Img;
bytes = await Task.Run(() => { return(NSData.FromFile(s + ".gif")); });
if (bytes == null)
{
return;
}
try
{
var sourceRef = CGImageSource.FromData(bytes);
CreateAnimatedImageView(sourceRef, Control);
}
catch (Exception ex)
{
//Debug.WriteLine("Unable to load gif: " + ex.Message);
}
}
public void CopyImageSource()
{
TestRuntime.AssertXcodeVersion(5, 0);
#if MONOMAC
using (NSData data = NSData.FromFile(NSBundle.MainBundle.PathForResource("xamarin2", "png")))
#else
using (NSData data = NSData.FromFile("xamarin2.png"))
#endif
using (var source = CGImageSource.FromData(data))
using (NSMutableData destData = new NSMutableData())
#if XAMCORE_2_0 // FromData => Create
using (var id = CGImageDestination.Create(destData, GoodUti, 1)) {
#else
using (var id = CGImageDestination.FromData(destData, GoodUti, 1)) {
#endif
NSError err;
// testing that null is allowed (no crash) so the fact that is return false and an error does not matter
Assert.False(id.CopyImageSource(source, (NSDictionary)null, out err), "CopyImageSource");
Assert.NotNull(err, "NSError");
}
}
public void AvailableDepthDataTypesTest()
{
#if !MONOMAC
TestRuntime.AssertDevice();
#endif
TestRuntime.AssertXcodeVersion(9, 0);
// xamarinmonkey.heic is the new photo format, also this one includes depth data
var imgdata = NSData.FromUrl(NSBundle.MainBundle.GetUrlForResource("xamarinmonkey", "heic", "CoreImage"));
Assert.NotNull(imgdata, "imgdata");
var imageSource = CGImageSource.FromData(imgdata);
Assert.NotNull(imageSource, "imageSource");
var info = imageSource.CopyAuxiliaryDataInfo(0, CGImageAuxiliaryDataType.Disparity);
Assert.NotNull(info, "info");
NSError err;
var depthData = AVDepthData.Create(info, out err);
Assert.NotNull(depthData, "depthData");
Assert.NotNull(depthData.AvailableDepthDataTypes, "AvailableDepthDataTypes");
}
private void FinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs e)
{
var originalImage = e.Info[UIImagePickerController.OriginalImage] as UIImage;
if (UIDevice.CurrentDevice.CheckSystemVersion(11, 0))
{
var imageManager = new PHImageManager();
imageManager.RequestImageData(e.PHAsset, null, (data, dataUti, orientation, info) =>
{
var source = CGImageSource.FromData(data);
var metadata = source.GetProperties(0).Dictionary;
GoToDescription(originalImage, UIDeviceOrientation.Portrait, metadata);
_imagePicker.DismissViewControllerAsync(false);
});
}
else
{
GoToDescription(originalImage, UIDeviceOrientation.Portrait);
_imagePicker.DismissViewControllerAsync(false);
}
}
protected override async void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == Image.SourceProperty.PropertyName)
{
NSData bytes = null;
var s = Element.Source;
if (s is UriImageSource)
{
using (var client = new HttpClient())
bytes = NSData.FromArray(await client.GetByteArrayAsync(((UriImageSource)s).Uri));
}
else if (s is StreamImageSource)
{
bytes = NSData.FromStream(await((StreamImageSource)s).Stream(default(CancellationToken)));
}
else if (s is FileImageSource)
{
bytes = await Task.Run(() => { return(NSData.FromFile(((FileImageSource)s).File)); });
}
if (bytes == null)
{
return;
}
try
{
var sourceRef = CGImageSource.FromData(bytes);
CreateAnimatedImageView(sourceRef, Control);
}
catch (Exception ex)
{
Debug.WriteLine("Unable to load gif: " + ex.Message);
}
}
}
public void AvailableDepthDataTypesTest()
{
TestRuntime.AssertDevice();
TestRuntime.AssertXcodeVersion(9, 0);
// xamarinmonkey.heic is the new photo format, also this one includes depth data
var imgdata = NSData.FromFile("CoreImage/xamarinmonkey.heic");
Assert.NotNull(imgdata, "imgdata");
var imageSource = CGImageSource.FromData(imgdata);
Assert.NotNull(imageSource, "imageSource");
var info = imageSource.CopyAuxiliaryDataInfo(0, CGImageAuxiliaryDataType.Disparity);
Assert.NotNull(info, "info");
NSError err;
var depthData = AVDepthData.Create(info, out err);
Assert.NotNull(depthData, "depthData");
Assert.NotNull(depthData.AvailableDepthDataTypes, "AvailableDepthDataTypes");
}
protected override async void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == ImageGifs.ImgProperty.PropertyName)
{
NSData bytes = null;
var s = img.Img;
bytes = await Task.Run(() => { return(NSData.FromFile(s + ".gif")); });
if (bytes == null)
{
return;
}
try
{
var sourceRef = CGImageSource.FromData(bytes);
CreateAnimatedImageView(sourceRef, Control);
}
catch (Exception ex)
{
//Debug.WriteLine("Unable to load gif: " + ex.Message);
}
}
}
// Shamelessly copied from React-Native: https://github.com/facebook/react-native/blob/2cbc9127560c5f0f89ae5aa6ff863b1818f1c7c3/Libraries/Image/RCTImageUtils.m
public static UIImage ToImage(this NSData data, CGSize destSize, nfloat destScale, RCTResizeMode resizeMode = RCTResizeMode.ScaleAspectFit, ImageInformation imageinformation = null, bool allowUpscale = false)
{
using (var sourceRef = CGImageSource.FromData(data))
{
var imageProperties = GetImageProperties(sourceRef);
if (imageProperties == null)
{
throw new BadImageFormatException("Image is null");
}
if (imageinformation != null)
{
if (imageProperties.PixelWidth.HasValue && imageProperties.PixelHeight.HasValue)
{
imageinformation.SetOriginalSize(imageProperties.PixelWidth.Value, imageProperties.PixelHeight.Value);
}
}
var sourceSize = new CGSize((nfloat)imageProperties.PixelWidth, (nfloat)imageProperties.PixelHeight);
if (destSize.IsEmpty)
{
destSize = sourceSize;
if (destScale <= 0)
{
destScale = 1;
}
}
else if (destScale <= 0)
{
destScale = ScaleHelper.Scale;
}
// Calculate target size
CGSize targetSize = RCTTargetSize(sourceSize, 1, destSize, destScale, resizeMode, allowUpscale);
CGSize targetPixelSize = RCTSizeInPixels(targetSize, destScale);
int maxPixelSize = (int)Math.Max(
Math.Min(sourceSize.Width, targetPixelSize.Width),
Math.Min(sourceSize.Height, targetPixelSize.Height)
);
var options = new CGImageThumbnailOptions()
{
ShouldAllowFloat = true,
CreateThumbnailWithTransform = true,
CreateThumbnailFromImageAlways = true,
MaxPixelSize = maxPixelSize,
ShouldCache = false,
};
UIImage image = null;
// gif
if (sourceRef.ImageCount > 1)
{
image = GifHelper.AnimateGif(sourceRef, destScale);
}
else
{
// Get thumbnail
using (var imageRef = sourceRef.CreateThumbnail(0, options))
{
if (imageRef != null)
{
// Return image
image = new UIImage(imageRef, destScale, UIImageOrientation.Up);
}
}
}
if (imageinformation != null && image != null)
{
int width = (int)image.Size.Width;
int height = (int)image.Size.Height;
imageinformation.SetCurrentSize(width.PointsToPixels(), height.PointsToPixels());
}
return(image);
}
}
public static async Task <IDecodedImage <PImage> > SourceRegfToDecodedImageAsync(NSData nsdata, CGSize destSize, nfloat destScale, Configuration config, TaskParameter parameters, RCTResizeMode resizeMode = RCTResizeMode.ScaleAspectFit, ImageInformation imageinformation = null, bool allowUpscale = false)
{
using (var sourceRef = CGImageSource.FromData(nsdata))
{
if (sourceRef == null)
{
throw new BadImageFormatException("Decoded image is null or corrupted");
}
var imageProperties = sourceRef.GetProperties(0);
if (imageProperties == null || !imageProperties.PixelWidth.HasValue || !imageProperties.PixelHeight.HasValue)
{
throw new BadImageFormatException("Can't read image size properties. File corrupted?");
}
imageinformation.SetOriginalSize(imageProperties.PixelWidth.Value, imageProperties.PixelHeight.Value);
var sourceSize = new CGSize(imageProperties.PixelWidth.Value, imageProperties.PixelHeight.Value);
if (destSize.IsEmpty)
{
destSize = sourceSize;
if (destScale <= 0)
{
destScale = 1;
}
}
else if (destScale <= 0)
{
destScale = ScaleHelper.Scale;
}
// Calculate target size
var targetSize = RCTTargetSize(sourceSize, 1, destSize, destScale, resizeMode, allowUpscale);
var targetPixelSize = RCTSizeInPixels(targetSize, destScale);
var maxPixelSize = (int)Math.Max(
allowUpscale ? targetPixelSize.Width : Math.Min(sourceSize.Width, targetPixelSize.Width),
allowUpscale ? targetPixelSize.Height : Math.Min(sourceSize.Height, targetPixelSize.Height)
);
var options = new CGImageThumbnailOptions()
{
ShouldAllowFloat = true,
CreateThumbnailWithTransform = true,
CreateThumbnailFromImageAlways = true,
MaxPixelSize = maxPixelSize,
ShouldCache = false,
};
PImage image = null;
IAnimatedImage <PImage>[] images = null;
// GIF
if (sourceRef.ImageCount > 1 && config.AnimateGifs && imageinformation.Type != ImageInformation.ImageType.ICO)
{
try
{
await _gifLock.WaitAsync().ConfigureAwait(false);
var frameCount = sourceRef.ImageCount;
// no need to animate, fail safe.
if (frameCount <= 1)
{
using (var imageRef = sourceRef.CreateThumbnail(0, options))
{
#if __IOS__ || __TVOS__
image = new PImage(imageRef, destScale, UIImageOrientation.Up);
#elif __MACOS__
image = new PImage(imageRef, CGSize.Empty);
#endif
}
}
#if __IOS__ || __TVOS__
var frames = GetFrames(sourceRef, options);
var delays = GetDelays(sourceRef);
var totalDuration = delays.Sum();
var adjustedFrames = AdjustFramesToSpoofDurations(frames, destScale, delays, totalDuration);
var avgDuration = (double)totalDuration / adjustedFrames.Length;
images = new AnimatedImage <PImage> [adjustedFrames.Length];
for (int i = 0; i < images.Length; i++)
{
images[i] = new AnimatedImage <PImage>()
{
Image = adjustedFrames[i], Delay = (int)avgDuration
};
}
#elif __MACOS__
images = new AnimatedImage <PImage> [frameCount];
var delays = GetDelays(sourceRef);
for (var i = 0; i < images.Length; i++)
{
var nsImage = new PImage(sourceRef.CreateThumbnail(i, options), CGSize.Empty);
images[i] = new AnimatedImage <PImage>()
{
Image = nsImage, Delay = delays[i]
};
}
#endif
}
finally
{
_gifLock.Release();
}
}
else
{
// Get thumbnail
using (var imageRef = sourceRef.CreateThumbnail(0, options))
{
if (imageRef != null)
{
#if __IOS__ || __TVOS__
image = new PImage(imageRef, destScale, UIImageOrientation.Up);
#elif __MACOS__
image = new PImage(imageRef, CGSize.Empty);
#endif
}
}
}
var result = new DecodedImage <PImage>();
if (images != null && images.Length > 1)
{
result.IsAnimated = true;
result.AnimatedImages = images;
if (imageinformation != null)
{
var width = (int)images[0].Image.Size.Width;
var height = (int)images[0].Image.Size.Height;
imageinformation.SetCurrentSize(width.DpToPixels(), height.DpToPixels());
}
}
else
{
result.Image = image;
if (imageinformation != null)
{
var width = (int)image.Size.Width;
var height = (int)image.Size.Height;
imageinformation.SetCurrentSize(width.DpToPixels(), height.DpToPixels());
}
}
return(result);
}
}
public static UIImageView GetAnimatedImageView(NSData nsData, UIImageView imageView = null)
{
var sourceRef = CGImageSource.FromData(nsData);
return(CreateAnimatedImageView(sourceRef, imageView));
}
public AnimatedImage(NSData data)
: this(CGImageSource.FromData(data, null))
{
}
// Shamelessly copied from React-Native: https://github.com/facebook/react-native/blob/2cbc9127560c5f0f89ae5aa6ff863b1818f1c7c3/Libraries/Image/RCTImageUtils.m
public static NSImage ToImage(this NSData data, CGSize destSize, nfloat destScale, Configuration config, TaskParameter parameters, RCTResizeMode resizeMode = RCTResizeMode.ScaleAspectFit, ImageInformation imageinformation = null, bool allowUpscale = false)
{
using (var sourceRef = CGImageSource.FromData(data))
{
if (sourceRef == null)
{
throw new BadImageFormatException("Decoded image is null or corrupted");
}
var imageProperties = sourceRef.GetProperties(0);
if (imageProperties == null || !imageProperties.PixelWidth.HasValue || !imageProperties.PixelHeight.HasValue)
{
throw new BadImageFormatException("Can't read image size properties. File corrupted?");
}
imageinformation.SetOriginalSize(imageProperties.PixelWidth.Value, imageProperties.PixelHeight.Value);
var sourceSize = new CGSize(imageProperties.PixelWidth.Value, imageProperties.PixelHeight.Value);
if (destSize.IsEmpty)
{
destSize = sourceSize;
if (destScale <= 0)
{
destScale = 1;
}
}
else if (destScale <= 0)
{
destScale = ScaleHelper.Scale;
}
// Calculate target size
CGSize targetSize = RCTTargetSize(sourceSize, 1, destSize, destScale, resizeMode, allowUpscale);
CGSize targetPixelSize = RCTSizeInPixels(targetSize, destScale);
int maxPixelSize = (int)Math.Max(
allowUpscale ? targetPixelSize.Width : Math.Min(sourceSize.Width, targetPixelSize.Width),
allowUpscale ? targetPixelSize.Height : Math.Min(sourceSize.Height, targetPixelSize.Height)
);
var options = new CGImageThumbnailOptions()
{
ShouldAllowFloat = true,
CreateThumbnailWithTransform = true,
CreateThumbnailFromImageAlways = true,
MaxPixelSize = maxPixelSize,
ShouldCache = false,
};
NSImage image = null;
// Get thumbnail
using (var imageRef = sourceRef.CreateThumbnail(0, options))
{
if (imageRef != null)
{
// Return image
image = new NSImage(imageRef, CGSize.Empty);
}
}
if (imageinformation != null && image != null)
{
int width = (int)image.Size.Width;
int height = (int)image.Size.Height;
imageinformation.SetCurrentSize(width.PointsToPixels(), height.PointsToPixels());
}
return(image);
}
}
