public void FromUrlTest()
{
#if MONOMAC
using (var img = CGImageSource.FromUrl(fileUrl)) {
#else
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
#endif
Assert.NotNull(img, "#a1");
}
#if MONOMAC
using (var img = CGImageSource.FromUrl(fileUrl, new CGImageOptions())) {
#else
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename), new CGImageOptions())) {
#endif
Assert.NotNull(img, "#b1");
}
#if MONOMAC
using (var img = CGImageSource.FromUrl(fileUrl, null)) {
#else
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename), null)) {
#endif
Assert.NotNull(img, "#c1");
}
}
public void CopyProperties()
{
// what we had to answer with 5.2 for http://stackoverflow.com/q/10753108/220643
IntPtr lib = Dlfcn.dlopen(Constants.ImageIOLibrary, 0);
try {
NSString kCGImageSourceShouldCache = Dlfcn.GetStringConstant(lib, "kCGImageSourceShouldCache");
NSString kCGImagePropertyPixelWidth = Dlfcn.GetStringConstant(lib, "kCGImagePropertyPixelWidth");
NSString kCGImagePropertyPixelHeight = Dlfcn.GetStringConstant(lib, "kCGImagePropertyPixelHeight");
#if MONOMAC
using (var imageSource = CGImageSource.FromUrl(fileUrl)) {
#else
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
#endif
using (var dict = new NSMutableDictionary()) {
dict [kCGImageSourceShouldCache] = NSNumber.FromBoolean(false);
using (var props = imageSource.CopyProperties(dict)) {
Assert.Null(props.ValueForKey(kCGImagePropertyPixelWidth), "kCGImagePropertyPixelWidth");
Assert.Null(props.ValueForKey(kCGImagePropertyPixelHeight), "kCGImagePropertyPixelHeight");
NSNumber n = (NSNumber)props ["FileSize"];
// image is "optimized" for devices (and a lot bigger at 10351 bytes ;-)
Assert.That((int)n, Is.AtLeast(7318), "FileSize");
}
}
}
}
finally {
Dlfcn.dlclose(lib);
}
}
public Size GetImageSize(string imagePath)
{
try
{
NSUrl url = new NSUrl(path: imagePath, isDir: false);
CGImageSource myImageSource = CGImageSource.FromUrl(url, null);
var ns = new NSDictionary();
//Dimensions
NSObject width;
NSObject height;
using (NSDictionary imageProperties = myImageSource.CopyProperties(ns, 0))
{
var tiff = imageProperties.ObjectForKey(CGImageProperties.TIFFDictionary) as NSDictionary;
width = imageProperties[CGImageProperties.PixelWidth];
height = imageProperties[CGImageProperties.PixelHeight];
}
return(new Size(Convert.ToInt32(height.ToString()),
Convert.ToInt32(width.ToString())));
}
catch
{
return(Size.Empty);
}
}
public void GetProperties()
{
#if MONOMAC
using (var imageSource = CGImageSource.FromUrl(fileUrl)) {
#else
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
#endif
CGImageOptions options = new CGImageOptions()
{
ShouldCache = false
};
var props = imageSource.GetProperties(options);
Assert.Null(props.PixelWidth, "PixelHeight-0");
Assert.Null(props.PixelHeight, "PixelWidth-0");
// image is "optimized" for devices (and a lot bigger at 10351 bytes ;-)
Assert.That(props.FileSize, Is.AtLeast(7318), "FileSize");
props = imageSource.GetProperties(0, options);
Assert.AreEqual(57, props.PixelWidth, "PixelHeight");
Assert.AreEqual(57, props.PixelHeight, "PixelWidth");
Assert.AreEqual(CGImageColorModel.RGB, props.ColorModel, "ColorModel");
Assert.AreEqual(8, props.Depth, "Depth");
}
}
/// <summary>
/// Extract a DateTime object from a NSUrl object
/// </summary>
/// <param name="url">The url of the file</param>
/// <returns>
/// 1. The current date as a Nullable<DateTime> object IF url == null
/// 2. The date (as a Nullable<DateTime> object) that exists within the file's metadata (pointed to by url) IFF the EXIF data exists
/// 3. Null if the date cannot be found within the file's metadata
/// </returns>
private DateTime?GetDate(NSUrl url)
{
DateTime dateTaken;
// If the provided url is null
// NOTE: This case will happen if we import from camera
if (url == null)
{
dateTaken = DateTime.Now;
return(dateTaken);
}
CGImageSource source = CGImageSource.FromUrl(url);
NSDictionary ns = new NSDictionary();
NSDictionary properties = source.CopyProperties(ns, 0);
NSDictionary exifDict = properties?.ObjectForKey(ImageIO.CGImageProperties.ExifDictionary) as NSDictionary;
if (exifDict != null)
{
NSString date = exifDict[ImageIO.CGImageProperties.ExifDateTimeOriginal] as NSString;
if (!string.IsNullOrEmpty(date) &&
DateTime.TryParseExact(date, "yyyy:MM:dd HH:mm:ss", CultureInfo.CurrentCulture, DateTimeStyles.None, out dateTaken))
{
return(dateTaken);
}
}
return(null);
}
//http://chadkuehn.com/read-metadata-from-photos-in-c/
private DateTime?ExtractDateTimeTaken(string path)
{
DateTime? dt = null;
NSUrl url = new NSUrl(path: path, isDir: false);
CGImageSource myImageSource = CGImageSource.FromUrl(url, null);
var ns = new NSDictionary();
var imageProperties = myImageSource.CopyProperties(ns, 0);
var tiff = imageProperties.ObjectForKey(CGImageProperties.TIFFDictionary) as NSDictionary;
var exif = imageProperties.ObjectForKey(CGImageProperties.ExifDictionary) as NSDictionary;
//DateTaken
var dtstr = (exif[CGImageProperties.ExifDateTimeOriginal]).ToString();
if (string.IsNullOrEmpty(dtstr))
{
dtstr = (tiff[CGImageProperties.TIFFDateTime]).ToString();
}
if (!string.IsNullOrEmpty(dtstr))
{
dt = DateTime.ParseExact(dtstr, "yyyy:MM:dd HH:mm:ss", CultureInfo.InvariantCulture);
}
return(dt);
}
public Bitmap(string filename, bool useIcm)
{
// TODO: Implement useIcm
if (filename == null)
{
throw new ArgumentNullException("Value can not be null");
}
try
{
imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename));
if (imageSource == null)
{
throw new FileNotFoundException("File {0} not found.", filename);
}
InitializeImageFrame(0);
#if DEBUG
Tag = filename;
#endif
}
catch (Exception)
{
throw new FileNotFoundException("File {0} not found.", filename);
}
}
public void RemoveCache()
{
TestRuntime.AssertXcodeVersion(5, 0);
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
imageSource.RemoveCache(0);
}
}
public void CreateThumbnailTest()
{
using (var imgsrc = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
using (var img = imgsrc.CreateThumbnail(0, null)) {
Assert.NotNull(img, "#a1");
}
using (var img = imgsrc.CreateThumbnail(0, new CGImageThumbnailOptions())) {
Assert.NotNull(img, "#b1");
}
}
}
public void CreateImageTest()
{
using (var imgsrc = CGImageSource.FromUrl(fileUrl)) {
using (var img = imgsrc.CreateImage(0, null)) {
Assert.NotNull(img, "#a1");
}
using (var img = imgsrc.CreateImage(0, new CGImageOptions())) {
Assert.NotNull(img, "#b1");
}
}
}
public void RemoveCache()
{
if (!TestRuntime.CheckSystemAndSDKVersion(7, 0))
{
Assert.Ignore("Only on iOS7+");
}
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
imageSource.RemoveCache(0);
}
}
public object GetImageFromUri(FileUri imageUri, int targetWidth, int targetHeight, int rotation)
{
using (Stream stream = GetFileSystem().OpenFile(imageUri, UniversalFileMode.Open, UniversalFileAccess.Read, UniversalFileShare.Read))
{
CGImageSource source = CGImageSource.FromUrl(imageUri.ToNSUrl());
CGImageOptions options = new CGImageOptions();
options.ShouldCache = false;
var props = source.CopyProperties(options, 0);
int imageWidth = ((NSNumber)props["PixelWidth"]).Int32Value;
int imageHeight = ((NSNumber)props["PixelHeight"]).Int32Value;
int scale = 1;
while (imageWidth / scale / 2 >= (nfloat)targetWidth &&
imageHeight / scale / 2 >= (nfloat)targetHeight)
{
scale *= 2;
}
stream.Seek(0, SeekOrigin.Begin);
UIImage image = UIImage.LoadFromData(NSData.FromUrl(imageUri.ToNSUrl()), scale);
if (rotation != 0)
{
float radians = rotation * (float)Math.PI / 180f;
CGRect imageFrame = new CGRect(0, 0, image.Size.Width, image.Size.Height);
CGAffineTransform t = CGAffineTransform.MakeRotation(radians);
imageFrame = t.TransformRect(imageFrame);
CGSize rotatedSize = new CGSize(imageFrame.Width, imageFrame.Height);
UIGraphics.BeginImageContext(rotatedSize);
using (CGContext context = UIGraphics.GetCurrentContext())
{
context.TranslateCTM(rotatedSize.Width / 2, rotatedSize.Height / 2);
context.RotateCTM(-radians);
context.ScaleCTM(1.0f, -1.0f);
image.Draw(new CGRect(-image.Size.Width / 2, -image.Size.Height / 2, image.Size.Width, image.Size.Height));
image = UIGraphics.GetImageFromCurrentImageContext();
}
UIGraphics.EndImageContext();
}
return(image);
}
}
public ImageSize ImageSizeIos(string localPath)
{
using (var src = CGImageSource.FromUrl(NSUrl.FromFilename(localPath)))
{
CGImageOptions options = new CGImageOptions()
{
ShouldCache = false
};
// do not forget the '0' image index or you won't get what you're looking for!
var p = src.GetProperties(0, options);
return(new ImageSize((int)p.PixelWidth, (int)p.PixelHeight));
}
}
public void FromUrlTest()
{
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
Assert.NotNull(img, "#a1");
}
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename), new CGImageOptions())) {
Assert.NotNull(img, "#b1");
}
using (var img = CGImageSource.FromUrl(NSUrl.FromFilename(filename), null)) {
Assert.NotNull(img, "#c1");
}
}
public void CopyMetadata()
{
TestRuntime.AssertXcodeVersion(5, 0);
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
CGImageOptions options = new CGImageOptions()
{
ShouldCacheImmediately = true
};
using (CGImageMetadata metadata = imageSource.CopyMetadata(0, options)) {
Console.WriteLine();
}
}
}
static public FormsCAKeyFrameAnimation CreateAnimationFromFileImageSource(FileImageSource imageSource)
{
FormsCAKeyFrameAnimation animation = null;
string file = imageSource?.File;
if (!string.IsNullOrEmpty(file))
{
using (var parsedImageSource = CGImageSource.FromUrl(NSUrl.CreateFileUrl(file, null)))
{
animation = ImageAnimationHelper.CreateAnimationFromCGImageSource(parsedImageSource);
}
}
return(animation);
}
public void CreateImageTest()
{
#if MONOMAC
using (var imgsrc = CGImageSource.FromUrl(fileUrl)) {
#else
using (var imgsrc = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
#endif
using (var img = imgsrc.CreateImage(0, null)) {
Assert.NotNull(img, "#a1");
}
using (var img = imgsrc.CreateImage(0, new CGImageOptions())) {
Assert.NotNull(img, "#b1");
}
}
}
public void CopyMetadata()
{
if (!TestRuntime.CheckSystemAndSDKVersion(7, 0))
{
Assert.Ignore("Only on iOS7+");
}
using (var imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename))) {
CGImageOptions options = new CGImageOptions()
{
ShouldCacheImmediately = true
};
using (CGImageMetadata metadata = imageSource.CopyMetadata(0, options)) {
Console.WriteLine();
}
}
}
public UIImage Generate(CGSize size)
{
try
{
var imageSource = CGImageSource.FromUrl(Url);
var thumbnail = imageSource.CreateThumbnail(0,
new CGImageThumbnailOptions
{
MaxPixelSize = (int)(Math.Max(size.Width, size.Height) * UIScreen.MainScreen.Scale),
CreateThumbnailFromImageIfAbsent = true
});
return(UIImage.FromImage(thumbnail));
}
catch (Exception)
{
return(null);
}
}
public void CreateThumbnailTest()
{
using (var imgsrc = CGImageSource.FromUrl(fileUrl)) {
using (var img = imgsrc.CreateThumbnail(0, null)) {
#if NET
Assert.Null(img, "#a1");
#else
Assert.NotNull(img, "#a1");
Assert.AreEqual(IntPtr.Zero, img.Handle, "#a2");
#endif
}
using (var img = imgsrc.CreateThumbnail(0, new CGImageThumbnailOptions())) {
#if NET
Assert.Null(img, "#b1");
#else
Assert.NotNull(img, "#b1");
Assert.AreEqual(IntPtr.Zero, img.Handle, "#b2");
#endif
}
}
}
public Bitmap(string filename)
{
if (filename == null)
{
throw new ArgumentNullException("Value can not be null");
}
try
{
imageSource = CGImageSource.FromUrl(NSUrl.FromFilename(filename));
if (imageSource == null)
{
throw new FileNotFoundException("File {0} not found.", filename);
}
InitializeImageFrame(0);
}
catch (Exception)
{
throw new FileNotFoundException("File {0} not found.", filename);
}
}
public IExifData GetExifData()
{
if (info != null)
{
return(new ExifData(info.ObjectForKey(UIImagePickerController.MediaMetadata) as NSDictionary));
}
if (filePath != null)
{
NSUrl url = System.IO.File.Exists(filePath) ? NSUrl.FromFilename(filePath) : NSUrl.FromString(filePath);
if (url != null)
{
CGImageSource source = CGImageSource.FromUrl(url);
if (source != null)
{
return(new ExifData(source.CopyProperties((NSDictionary)null, 0)));
}
}
}
return(new ExifData());
}
protected INativeObject GetINativeInstance(Type t)
{
var ctor = t.GetConstructor(Type.EmptyTypes);
if ((ctor != null) && !ctor.IsAbstract)
{
return(ctor.Invoke(null) as INativeObject);
}
if (!NativeObjectInterfaceType.IsAssignableFrom(t))
{
throw new ArgumentException("t");
}
switch (t.Name)
{
case "CFAllocator":
return(CFAllocator.SystemDefault);
case "CFBundle":
var bundles = CFBundle.GetAll();
if (bundles.Length > 0)
{
return(bundles [0]);
}
else
{
throw new InvalidOperationException(string.Format("Could not create the new instance for type {0}.", t.Name));
}
case "CFNotificationCenter":
return(CFNotificationCenter.Darwin);
case "CFReadStream":
case "CFStream":
CFReadStream readStream;
CFWriteStream writeStream;
CFStream.CreatePairWithSocketToHost("www.google.com", 80, out readStream, out writeStream);
return(readStream);
case "CFWriteStream":
CFStream.CreatePairWithSocketToHost("www.google.com", 80, out readStream, out writeStream);
return(writeStream);
case "CFUrl":
return(CFUrl.FromFile("/etc"));
case "CFPropertyList":
return(CFPropertyList.FromData(NSData.FromString("<string>data</string>")).PropertyList);
case "DispatchData":
return(DispatchData.FromByteBuffer(new byte [] { 1, 2, 3, 4 }));
case "AudioFile":
var path = Path.GetFullPath("1.caf");
var af = AudioFile.Open(CFUrl.FromFile(path), AudioFilePermission.Read, AudioFileType.CAF);
return(af);
case "CFHTTPMessage":
return(CFHTTPMessage.CreateEmpty(false));
case "CFMutableString":
return(new CFMutableString("xamarin"));
case "CGBitmapContext":
byte[] data = new byte [400];
using (CGColorSpace space = CGColorSpace.CreateDeviceRGB()) {
return(new CGBitmapContext(data, 10, 10, 8, 40, space, CGBitmapFlags.PremultipliedLast));
}
case "CGContextPDF":
var filename = Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments) + "/t.pdf";
using (var url = new NSUrl(filename))
return(new CGContextPDF(url));
case "CGColorConversionInfo":
var cci = new GColorConversionInfoTriple()
{
Space = CGColorSpace.CreateGenericRgb(),
Intent = CGColorRenderingIntent.Default,
Transform = CGColorConversionInfoTransformType.ApplySpace
};
return(new CGColorConversionInfo((NSDictionary)null, cci, cci, cci));
case "CGDataConsumer":
using (NSMutableData destData = new NSMutableData()) {
return(new CGDataConsumer(destData));
}
case "CGDataProvider":
filename = "xamarin1.png";
return(new CGDataProvider(filename));
case "CGFont":
return(CGFont.CreateWithFontName("Courier New"));
case "CGPattern":
return(new CGPattern(
new RectangleF(0, 0, 16, 16),
CGAffineTransform.MakeIdentity(),
16, 16,
CGPatternTiling.NoDistortion,
true,
(cgc) => {}));
case "CMBufferQueue":
return(CMBufferQueue.CreateUnsorted(2));
case "CTFont":
CTFontDescriptorAttributes fda = new CTFontDescriptorAttributes()
{
FamilyName = "Courier",
StyleName = "Bold",
Size = 16.0f
};
using (var fd = new CTFontDescriptor(fda))
return(new CTFont(fd, 10));
case "CTFontCollection":
return(new CTFontCollection(new CTFontCollectionOptions()));
case "CTFontDescriptor":
fda = new CTFontDescriptorAttributes();
return(new CTFontDescriptor(fda));
case "CTTextTab":
return(new CTTextTab(CTTextAlignment.Left, 2));
case "CTTypesetter":
return(new CTTypesetter(new NSAttributedString("Hello, world",
new CTStringAttributes()
{
ForegroundColorFromContext = true,
Font = new CTFont("ArialMT", 24)
})));
case "CTFrame":
var framesetter = new CTFramesetter(new NSAttributedString("Hello, world",
new CTStringAttributes()
{
ForegroundColorFromContext = true,
Font = new CTFont("ArialMT", 24)
}));
var bPath = UIBezierPath.FromRect(new RectangleF(0, 0, 3, 3));
return(framesetter.GetFrame(new NSRange(0, 0), bPath.CGPath, null));
case "CTFramesetter":
return(new CTFramesetter(new NSAttributedString("Hello, world",
new CTStringAttributes()
{
ForegroundColorFromContext = true,
Font = new CTFont("ArialMT", 24)
})));
case "CTGlyphInfo":
return(new CTGlyphInfo("copyright", new CTFont("ArialMY", 24), "Foo"));
case "CTLine":
return(new CTLine(new NSAttributedString("Hello, world",
new CTStringAttributes()
{
ForegroundColorFromContext = true,
Font = new CTFont("ArialMT", 24)
})));
case "CGImageDestination":
var storage = new NSMutableData();
return(CGImageDestination.Create(new CGDataConsumer(storage), "public.png", 1));
case "CGImageMetadataTag":
using (NSString name = new NSString("tagName"))
using (var value = new NSString("value"))
return(new CGImageMetadataTag(CGImageMetadataTagNamespaces.Exif, CGImageMetadataTagPrefixes.Exif, name, CGImageMetadataType.Default, value));
case "CGImageSource":
filename = "xamarin1.png";
return(CGImageSource.FromUrl(NSUrl.FromFilename(filename)));
case "SecPolicy":
return(SecPolicy.CreateSslPolicy(false, null));
case "SecIdentity":
using (var options = NSDictionary.FromObjectAndKey(new NSString("farscape"), SecImportExport.Passphrase)) {
NSDictionary[] array;
var result = SecImportExport.ImportPkcs12(farscape_pfx, options, out array);
if (result != SecStatusCode.Success)
{
throw new InvalidOperationException(string.Format("Could not create the new instance for type {0} due to {1}.", t.Name, result));
}
return(new SecIdentity(array [0].LowlevelObjectForKey(SecImportExport.Identity.Handle)));
}
case "SecTrust":
X509Certificate x = new X509Certificate(mail_google_com);
using (var policy = SecPolicy.CreateSslPolicy(true, "mail.google.com"))
return(new SecTrust(x, policy));
case "SslContext":
return(new SslContext(SslProtocolSide.Client, SslConnectionType.Stream));
case "UIFontFeature":
return(new UIFontFeature(CTFontFeatureNumberSpacing.Selector.ProportionalNumbers));
case "NetworkReachability":
return(new NetworkReachability(IPAddress.Loopback, null));
case "VTCompressionSession":
case "VTSession":
return(VTCompressionSession.Create(1024, 768, CMVideoCodecType.H264, (sourceFrame, status, flags, buffer) => { }, null, (CVPixelBufferAttributes)null));
case "VTFrameSilo":
return(VTFrameSilo.Create());
case "VTMultiPassStorage":
return(VTMultiPassStorage.Create());
case "CFString":
return(new CFString("test"));
case "DispatchBlock":
return(new DispatchBlock(() => { }));
case "DispatchQueue":
return(new DispatchQueue("com.example.subsystem.taskXYZ"));
case "DispatchGroup":
return(DispatchGroup.Create());
case "CGColorSpace":
return(CGColorSpace.CreateDeviceCmyk());
case "CGGradient":
CGColor[] cArray = { UIColor.Black.CGColor, UIColor.Clear.CGColor, UIColor.Blue.CGColor };
return(new CGGradient(null, cArray));
case "CGImage":
filename = "xamarin1.png";
using (var dp = new CGDataProvider(filename))
return(CGImage.FromPNG(dp, null, false, CGColorRenderingIntent.Default));
case "CGColor":
return(UIColor.Black.CGColor);
case "CMClock":
return(CMClock.HostTimeClock);
case "CMTimebase":
return(new CMTimebase(CMClock.HostTimeClock));
case "CVPixelBufferPool":
return(new CVPixelBufferPool(
new CVPixelBufferPoolSettings(),
new CVPixelBufferAttributes(CVPixelFormatType.CV24RGB, 100, 50)
));
case "SecCertificate":
using (var cdata = NSData.FromArray(mail_google_com))
return(new SecCertificate(cdata));
case "SecCertificate2":
using (var cdata = NSData.FromArray(mail_google_com))
return(new SecCertificate2(new SecCertificate(cdata)));
case "SecTrust2":
X509Certificate x2 = new X509Certificate(mail_google_com);
using (var policy = SecPolicy.CreateSslPolicy(true, "mail.google.com"))
return(new SecTrust2(new SecTrust(x2, policy)));
case "SecIdentity2":
using (var options = NSDictionary.FromObjectAndKey(new NSString("farscape"), SecImportExport.Passphrase)) {
NSDictionary[] array;
var result = SecImportExport.ImportPkcs12(farscape_pfx, options, out array);
if (result != SecStatusCode.Success)
{
throw new InvalidOperationException(string.Format("Could not create the new instance for type {0} due to {1}.", t.Name, result));
}
return(new SecIdentity2(new SecIdentity(array [0].LowlevelObjectForKey(SecImportExport.Identity.Handle))));
}
case "SecKey":
SecKey private_key;
SecKey public_key;
using (var record = new SecRecord(SecKind.Key)) {
record.KeyType = SecKeyType.RSA;
record.KeySizeInBits = 512; // it's not a performance test :)
SecKey.GenerateKeyPair(record.ToDictionary(), out public_key, out private_key);
return(private_key);
}
case "SecAccessControl":
return(new SecAccessControl(SecAccessible.WhenPasscodeSetThisDeviceOnly));
default:
throw new InvalidOperationException(string.Format("Could not create the new instance for type {0}.", t.Name));
}
}
public AnimatedImage(NSUrl url)
: this(CGImageSource.FromUrl(url, null))
{
}
public static UIImageView GetAnimatedImageView(string url, UIImageView imageView = null)
{
var sourceRef = CGImageSource.FromUrl(NSUrl.FromString(url));
return(CreateAnimatedImageView(sourceRef, imageView));
}
private static List <PhotoModel> extractMetadata(string path)
{
List <PhotoModel> photoLocations = new List <PhotoModel>();
// reading from directory
string[] files = System.IO.Directory.GetFiles(path, "*.jp*g");
foreach (var item in files)
{
Console.WriteLine(item.ToString());
}
if (files.Length == 0)
{
Console.Error.WriteLine("No matching files found.");
Environment.Exit(1);
}
PhotoModel ds = new PhotoModel();
// extracting metadata for each file
foreach (string file in files)
{
Console.WriteLine("_________________________ NEW PHOTO _________________________");
#if __IOS__
var url = new NSUrl(file, false); // could be an NSUrl to asset lib...
CGImageSource myImageSource;
myImageSource = CGImageSource.FromUrl(url, null);
var ns = new NSDictionary();
var imageProperties = myImageSource.CopyProperties(ns, 0);
var width = imageProperties[CGImageProperties.PixelWidth];
var height = imageProperties[CGImageProperties.PixelHeight];
Console.WriteLine("Dimensions: {0}x{1}", width, height);
// for debugging output all the image metadata
Console.WriteLine(imageProperties.DescriptionInStringsFileFormat);
hm.Clear();
// tiff
var tiff = imageProperties.ObjectForKey(CGImageProperties.TIFFDictionary) as NSDictionary;
var artist = tiff[CGImageProperties.TIFFArtist];
var make = tiff[CGImageProperties.TIFFMake];
var model = tiff[CGImageProperties.TIFFModel];
if (artist != null)
{
hm.Add("owner", artist.ToString());
}
else
{
hm.Add("owner", make + " " + model);
}
// exif
var exif = imageProperties.ObjectForKey(CGImageProperties.ExifAuxDictionary) as NSDictionary;
var dateTimeOriginal = tiff[CGImageProperties.ExifDateTimeOriginal];
if (dateTimeOriginal != null)
{
hm.Add("date", dateTimeOriginal.ToString());
}
else
{
hm.Add("date", "");
}
// gps
var gps = imageProperties.ObjectForKey(CGImageProperties.GPSDictionary) as NSDictionary;
var lat = gps[CGImageProperties.GPSLatitude];
var latref = gps[CGImageProperties.GPSLatitudeRef];
var lon = gps[CGImageProperties.GPSLongitude];
var lonref = gps[CGImageProperties.GPSLongitudeRef];
var loc = String.Format("GPS: {0} {1}, {2} {3}", lat, latref, lon, lonref);
hm.Add("lat", lat.ToString());
hm.Add("lng", lon.ToString());
Console.WriteLine(loc);
string coordinate = lat + "," + lon;
ReverseGeocode(hm, coordinate);
photoLocations.Add(new PhotoModel(Double.Parse(lat.ToString()), Double.Parse(lon.ToString()), file, hm));
#endif
#if Android
photoLocations.AddRange(ExtractMetadataPerPhoto(file, out string fullAdress));
#endif
}
return(photoLocations);
}