private MediaFile GetPictureMediaFile(ALAsset asset, long index = 0)
{
var rep = asset.DefaultRepresentation;
if (rep == null)
{
return(null);
}
var cgImage = rep.GetImage();
UIImage image = null;
if (cgImage == null)
{
var fetch = PHAsset.FetchAssets(new[] { asset.AssetUrl }, null);
var ph = fetch.firstObject as PHAsset;
var manager = PHImageManager.DefaultManager;
var phOptions = new PHImageRequestOptions
{
Version = PHImageRequestOptionsVersion.Original,
NetworkAccessAllowed = true,
Synchronous = true
};
phOptions.ProgressHandler = (double progress, NSError error, out bool stop, NSDictionary info) =>
{
Debug.WriteLine($"Progress: {progress.ToString()}");
stop = false;
};
manager.RequestImageData(ph, phOptions, (data, i, orientation, k) =>
{
if (data != null)
{
image = new UIImage(data, 1.0f);
}
});
phOptions?.Dispose();
fetch?.Dispose();
ph?.Dispose();
}
else
{
image = new UIImage(cgImage, 1.0f, (UIImageOrientation)rep.Orientation);
}
var path = MediaPickerDelegate.GetOutputPath(MediaImplementation.TypeImage,
options.Directory ?? "temp",
options.Name, asset.AssetUrl?.PathExtension, index);
cgImage?.Dispose();
cgImage = null;
rep?.Dispose();
rep = null;
//There might be cases when the original image cannot be retrieved while image thumb was still present.
//Then no need to try to save it as we will get an exception here
//TODO: Ideally, we should notify the client that we failed to get original image
//TODO: Otherwise, it might be confusing to the user, that he saw the thumb, but did not get the image
if (image == null)
{
return(null);
}
image.AsJPEG().Save(path, true);
image?.Dispose();
image = null;
GC.Collect(GC.MaxGeneration, GCCollectionMode.Default);
string aPath = null;
//try to get the album path's url
var url = asset.AssetUrl;
aPath = url?.AbsoluteString;
return(new MediaFile(path, () => File.OpenRead(path), albumPath: aPath));
}
internal MediaPickerPopoverDelegate(MediaPickerDelegate pickerDelegate, UIImagePickerController picker)
{
pickerDelegate = pickerDelegate;
picker = picker;
}
static void ResizeAndCompressImage(StoreCameraMediaOptions options, MediaFile mediaFile, string pathExtension)
{
var image = UIImage.FromFile(mediaFile.Path);
var percent = 1.0f;
if (options.PhotoSize != PhotoSize.Full)
{
try
{
switch (options.PhotoSize)
{
case PhotoSize.Large:
percent = .75f;
break;
case PhotoSize.Medium:
percent = .5f;
break;
case PhotoSize.Small:
percent = .25f;
break;
case PhotoSize.Custom:
percent = (float)options.CustomPhotoSize / 100f;
break;
}
if (options.PhotoSize == PhotoSize.MaxWidthHeight && options.MaxWidthHeight.HasValue)
{
var max = Math.Max(image.Size.Width, image.Size.Height);
if (max > options.MaxWidthHeight.Value)
{
percent = (float)options.MaxWidthHeight.Value / (float)max;
}
}
if (percent < 1.0f)
{
//begin resizing image
image = image.ResizeImageWithAspectRatio(percent);
}
}
catch (Exception ex)
{
Console.WriteLine($"Unable to compress image: {ex}");
}
}
NSDictionary meta = null;
if (options.SaveMetaData)
{
try
{
meta = PhotoLibraryAccess.GetPhotoLibraryMetadata(new NSUrl(mediaFile.AlbumPath));
}
catch (Exception ex)
{
Console.WriteLine($"Unable to get metadata: {ex}");
}
}
//iOS quality is 0.0-1.0
var quality = (options.CompressionQuality / 100f);
var savedImage = false;
if (meta != null)
{
savedImage = MediaPickerDelegate.SaveImageWithMetadata(image, quality, meta, mediaFile.Path, pathExtension);
}
if (!savedImage)
{
if (pathExtension == "png")
{
image.AsPNG().Save(mediaFile.Path, true);
}
else
{
image.AsJPEG(quality).Save(mediaFile.Path, true);
}
}
image?.Dispose();
image = null;
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
}
private Task <MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null, CancellationToken token = default(CancellationToken))
{
UIViewController viewController = null;
UIWindow window = UIApplication.SharedApplication.KeyWindow;
if (window == null)
{
throw new InvalidOperationException("There's no current active window");
}
if (window.WindowLevel == UIWindowLevel.Normal)
{
viewController = window.RootViewController;
}
if (viewController == null)
{
window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null && w.WindowLevel == UIWindowLevel.Normal);
if (window == null)
{
throw new InvalidOperationException("Could not find current view controller");
}
else
{
viewController = window.RootViewController;
}
}
while (viewController.PresentedViewController != null)
{
viewController = viewController.PresentedViewController;
}
if (token.IsCancellationRequested)
{
return(Task.FromResult((MediaFile)null));
}
MediaPickerDelegate ndelegate = new MediaPickerDelegate(viewController, sourceType, options, token);
var od = Interlocked.CompareExchange(ref pickerDelegate, ndelegate, null);
if (od != null)
{
throw new InvalidOperationException("Only one operation can be active at a time");
}
var picker = SetupController(ndelegate, sourceType, mediaType, options);
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
{
ndelegate.Popover = popover = new UIPopoverController(picker);
ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
ndelegate.DisplayPopover();
token.Register(() =>
{
if (popover == null)
{
return;
}
NSRunLoop.Main.BeginInvokeOnMainThread(() =>
{
ndelegate.Popover.Dismiss(true);
ndelegate.CancelTask();
});
});
}
else
{
if (UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
picker.ModalPresentationStyle = options?.ModalPresentationStyle == MediaPickerModalPresentationStyle.OverFullScreen
? UIModalPresentationStyle.OverFullScreen
: UIModalPresentationStyle.FullScreen;
}
viewController.PresentViewController(picker, true, null);
token.Register(() =>
{
if (picker == null)
{
return;
}
NSRunLoop.Main.BeginInvokeOnMainThread(() =>
{
picker.DismissModalViewController(true);
ndelegate.CancelTask();
});
});
}
return(ndelegate.Task.ContinueWith(t =>
{
try
{
popover?.Dispose();
}
catch
{
}
popover = null;
Interlocked.Exchange(ref pickerDelegate, null);
try
{
picker?.Dispose();
}
catch
{
}
picker = null;
return t;
}).Unwrap());
}
internal MediaPickerController(MediaPickerDelegate mpDelegate)
{
base.Delegate = mpDelegate;
}
Task <MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null, CancellationToken token = default(CancellationToken))
{
var viewController = GetHostViewController();
if (token.IsCancellationRequested)
{
return(Task.FromResult((MediaFile)null));
}
var ndelegate = new MediaPickerDelegate(viewController, sourceType, options, token);
var od = Interlocked.CompareExchange(ref pickerDelegate, ndelegate, null);
if (od != null)
{
throw new InvalidOperationException("Only one operation can be active at a time");
}
var tcs = new TaskCompletionSource <Task>();
var picker = SetupController(ndelegate, sourceType, mediaType, tcs, options);
tcs.Task.ContinueWith(t => Dismiss(popover, picker));
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
{
ndelegate.Popover = popover = new UIPopoverController(picker);
ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
ndelegate.DisplayPopover();
token.Register(() =>
{
if (popover == null)
{
return;
}
NSRunLoop.Main.BeginInvokeOnMainThread(() =>
{
ndelegate.Popover.Dismiss(true);
ndelegate.CancelTask();
});
});
}
else
{
if (UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
picker.ModalPresentationStyle = options?.ModalPresentationStyle == MediaPickerModalPresentationStyle.OverFullScreen
? UIModalPresentationStyle.OverFullScreen
: UIModalPresentationStyle.FullScreen;
}
viewController.PresentViewController(picker, true, null);
token.Register(() =>
{
if (picker == null)
{
return;
}
NSRunLoop.Main.BeginInvokeOnMainThread(() =>
{
picker.DismissModalViewController(true);
ndelegate.CancelTask();
});
});
}
return(ndelegate.Task.ContinueWith(t => t.Result == null ? null : t.Result.FirstOrDefault()));
}
internal MediaPickerController(MediaPickerDelegate mpDelegate) => base.Delegate = mpDelegate;
/// <summary>
///
/// </summary>
/// <param name="options"></param>
/// <returns></returns>
public MediaPickerController GetTakeVideoUI(StoreVideoOptions options)
{
if (!IsTakeVideoSupported)
throw new NotSupportedException();
if (!IsCameraAvailable)
throw new NotSupportedException();
VerifyCameraOptions(options);
var d = new MediaPickerDelegate(null, UIImagePickerControllerSourceType.Camera, options);
return SetupController(d, UIImagePickerControllerSourceType.Camera, TypeMovie, options);
}
internal MediaPickerController(MediaPickerDelegate mpDelegate, TaskCompletionSource <Task> taskCompletionSource)
{
base.Delegate = mpDelegate;
this.taskCompletionSource = taskCompletionSource;
}
private static void ResizeAndCompressImage(StoreCameraMediaOptions options, MediaFile mediaFile, string pathExtension)
{
var image = UIImage.FromFile(mediaFile.Path);
var percent = 1.0f;
if (options.PhotoSize != PhotoSize.Full)
{
try
{
switch (options.PhotoSize)
{
case PhotoSize.Large:
percent = .75f;
break;
case PhotoSize.Medium:
percent = .5f;
break;
case PhotoSize.Small:
percent = .25f;
break;
case PhotoSize.Custom:
percent = (float)options.CustomPhotoSize / 100f;
break;
}
if (options.PhotoSize == PhotoSize.MaxWidthHeight && options.MaxWidthHeight.HasValue)
{
var max = Math.Max(image.Size.Width, image.Size.Height);
if (max > options.MaxWidthHeight.Value)
{
percent = (float)options.MaxWidthHeight.Value / (float)max;
}
}
if (percent < 1.0f)
{
//begin resizing image
image = image.ResizeImageWithAspectRatio(percent);
}
NSDictionary meta = null;
try
{
//meta = PhotoLibraryAccess.GetPhotoLibraryMetadata(asset.AssetUrl);
//meta = info[UIImagePickerController.MediaMetadata] as NSDictionary;
if (meta != null && meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
var newMeta = new NSMutableDictionary();
newMeta.SetValuesForKeysWithDictionary(meta);
var newTiffDict = new NSMutableDictionary();
newTiffDict.SetValuesForKeysWithDictionary(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
newTiffDict.SetValueForKey(meta[ImageIO.CGImageProperties.Orientation], ImageIO.CGImageProperties.TIFFOrientation);
newMeta[ImageIO.CGImageProperties.TIFFDictionary] = newTiffDict;
meta = newMeta;
}
var location = options.Location;
if (meta != null && location != null)
{
meta = MediaPickerDelegate.SetGpsLocation(meta, location);
}
}
catch (Exception ex)
{
Console.WriteLine($"Unable to get metadata: {ex}");
}
//iOS quality is 0.0-1.0
var quality = (options.CompressionQuality / 100f);
var savedImage = false;
if (meta != null)
{
savedImage = MediaPickerDelegate.SaveImageWithMetadata(image, quality, meta, mediaFile.Path, pathExtension);
}
if (!savedImage)
{
image.AsJPEG(quality).Save(mediaFile.Path, true);
}
image?.Dispose();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
}
catch (Exception ex)
{
Console.WriteLine($"Unable to compress image: {ex}");
}
}
}
internal MediaPickerPopoverDelegate(MediaPickerDelegate pickerDelegate, UINavigationController picker)
{
this.pickerDelegate = pickerDelegate;
this.picker = picker;
}
private Task<MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null)
{
UIWindow window = UIApplication.SharedApplication.KeyWindow;
if (window == null)
throw new InvalidOperationException("There's no current active window");
UIViewController viewController = window.RootViewController;
if (viewController == null)
{
window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null);
if (window == null)
throw new InvalidOperationException("Could not find current view controller");
else
viewController = window.RootViewController;
}
while (viewController.PresentedViewController != null)
viewController = viewController.PresentedViewController;
MediaPickerDelegate ndelegate = new MediaPickerDelegate(viewController, sourceType, options);
var od = Interlocked.CompareExchange(ref pickerDelegate, ndelegate, null);
if (od != null)
throw new InvalidOperationException("Only one operation can be active at at time");
var picker = SetupController(ndelegate, sourceType, mediaType, options);
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
{
ndelegate.Popover = new UIPopoverController(picker);
ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
ndelegate.DisplayPopover();
}
else
viewController.PresentViewController(picker, true, null);
return ndelegate.Task.ContinueWith(t =>
{
if (popover != null)
{
popover.Dispose();
popover = null;
}
Interlocked.Exchange(ref pickerDelegate, null);
return t;
}).Unwrap();
}
private static MediaPickerController SetupController(MediaPickerDelegate mpDelegate, UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null)
{
var picker = new MediaPickerController(mpDelegate);
picker.MediaTypes = new[] { mediaType };
picker.SourceType = sourceType;
if (sourceType == UIImagePickerControllerSourceType.Camera)
{
picker.CameraDevice = GetUICameraDevice(options.DefaultCamera);
if (mediaType == TypeImage)
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Photo;
else if (mediaType == TypeMovie)
{
StoreVideoOptions voptions = (StoreVideoOptions)options;
picker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
picker.VideoQuality = GetQuailty(voptions.Quality);
picker.VideoMaximumDuration = voptions.DesiredLength.TotalSeconds;
}
}
return picker;
}
internal MediaPickerPopoverDelegate(MediaPickerDelegate pickerDelegate, UIImagePickerController picker)
{
this.pickerDelegate = pickerDelegate;
this.picker = picker;
}
private MediaFile GetPictureMediaFile(ALAsset asset)
{
var rep = asset.DefaultRepresentation;
if (rep == null)
{
return(null);
}
var cgImage = rep.GetImage();
var path = MediaPickerDelegate.GetOutputPath(MediaImplementation.TypeImage,
_options.Directory ?? "temp",
_options.Name);
var image = new UIImage(cgImage, 1.0f, (UIImageOrientation)rep.Orientation);
var percent = 1.0f;
if (_options.PhotoSize != PhotoSize.Full)
{
try
{
switch (_options.PhotoSize)
{
case PhotoSize.Large:
percent = .75f;
break;
case PhotoSize.Medium:
percent = .5f;
break;
case PhotoSize.Small:
percent = .25f;
break;
case PhotoSize.Custom:
percent = (float)_options.CustomPhotoSize / 100f;
break;
}
if (_options.PhotoSize == PhotoSize.MaxWidthHeight && _options.MaxWidthHeight.HasValue)
{
var max = Math.Max(image.CGImage.Width, image.CGImage.Height);
if (max > _options.MaxWidthHeight.Value)
{
percent = (float)_options.MaxWidthHeight.Value / (float)max;
}
}
if (percent < 1.0f)
{
//begin resizing image
image = image.ResizeImageWithAspectRatio(percent);
}
}
catch (Exception ex)
{
Console.WriteLine($"Unable to compress image: {ex}");
}
}
NSDictionary meta = null;
try
{
//meta = PhotoLibraryAccess.GetPhotoLibraryMetadata(asset.AssetUrl);
//meta = info[UIImagePickerController.MediaMetadata] as NSDictionary;
if (meta != null && meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
var newMeta = new NSMutableDictionary();
newMeta.SetValuesForKeysWithDictionary(meta);
var newTiffDict = new NSMutableDictionary();
newTiffDict.SetValuesForKeysWithDictionary(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
newTiffDict.SetValueForKey(meta[ImageIO.CGImageProperties.Orientation], ImageIO.CGImageProperties.TIFFOrientation);
newMeta[ImageIO.CGImageProperties.TIFFDictionary] = newTiffDict;
meta = newMeta;
}
var location = _options.Location;
if (meta != null && location != null)
{
meta = MediaPickerDelegate.SetGpsLocation(meta, location);
}
}
catch (Exception ex)
{
Console.WriteLine($"Unable to get metadata: {ex}");
}
//iOS quality is 0.0-1.0
var quality = (_options.CompressionQuality / 100f);
var savedImage = false;
if (meta != null)
{
savedImage = MediaPickerDelegate.SaveImageWithMetadata(image, quality, meta, path);
}
if (!savedImage)
{
image.AsJPEG(quality).Save(path, true);
}
string aPath = null;
//try to get the album path's url
var url = asset.AssetUrl;
aPath = url?.AbsoluteString;
return(new MediaFile(path, () => File.OpenRead(path), albumPath: aPath));
}
private Task <MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, StoreCameraMediaOptions options = null)
{
UIViewController viewController = null;
UIWindow window = UIApplication.SharedApplication.KeyWindow;
if (window == null)
{
throw new InvalidOperationException("There's no current active window");
}
if (window.WindowLevel == UIWindowLevel.Normal)
{
viewController = window.RootViewController;
}
if (viewController == null)
{
window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null && w.WindowLevel == UIWindowLevel.Normal);
if (window == null)
{
throw new InvalidOperationException("Could not find current view controller");
}
else
{
viewController = window.RootViewController;
}
}
while (viewController.PresentedViewController != null)
{
viewController = viewController.PresentedViewController;
}
MediaPickerDelegate ndelegate = new MediaPickerDelegate(viewController, sourceType, options);
var od = Interlocked.CompareExchange(ref pickerDelegate, ndelegate, null);
if (od != null)
{
throw new InvalidOperationException("Only one operation can be active at at time");
}
var picker = SetupController(ndelegate, sourceType, mediaType, options);
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
{
ndelegate.Popover = popover = new UIPopoverController(picker);
ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
ndelegate.DisplayPopover();
}
else
{
if (UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
picker.ModalPresentationStyle = UIModalPresentationStyle.FullScreen;
}
viewController.PresentViewController(picker, true, null);
}
return(ndelegate.Task.ContinueWith(t =>
{
if (popover != null)
{
popover.Dispose();
popover = null;
}
Interlocked.Exchange(ref pickerDelegate, null);
picker.Dispose();
return t;
}).Unwrap());
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public MediaPickerController GetPickVideoUI()
{
if (!IsPickVideoSupported)
throw new NotSupportedException();
var d = new MediaPickerDelegate(null, UIImagePickerControllerSourceType.PhotoLibrary, null);
return SetupController(d, UIImagePickerControllerSourceType.PhotoLibrary, TypeMovie);
}
