private MediaFile GetPictureMediaFile(ALAsset asset, long index = 0)
{
var rep = asset.DefaultRepresentation;
if (rep == null)
{
return(null);
}
var cgImage = rep.GetImage();
var path = MediaPickerDelegate.GetOutputPath(MediaImplementation.TypeImage,
_options.Directory ?? "temp",
_options.Name, index);
var image = new UIImage(cgImage, 1.0f, (UIImageOrientation)rep.Orientation);
cgImage?.Dispose();
cgImage = null;
rep?.Dispose();
rep = 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));
}
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;
};
if (UIDevice.CurrentDevice.CheckSystemVersion(13, 0))
{
manager.RequestImageDataAndOrientation(ph, phOptions, (data, i, orientation, k) =>
{
if (data != null)
{
image = new UIImage(data, 1.0f);
}
});
}
else
{
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));
}
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($"Unable to get metadata: {ex}");
}
//iOS quality is 0.0-1.0
var quality = (_options.CompressionQuality / 100f);
var savedImage = false;
if (meta != null)
{
savedImage = MediaPickerDelegate.SaveImageWithMetadata(image, quality, meta, path);
}
if (!savedImage)
{
image.AsJPEG(quality).Save(path, true);
}
string aPath = null;
//try to get the album path's url
var url = asset.AssetUrl;
aPath = url?.AbsoluteString;
return(new MediaFile(path, () => File.OpenRead(path), albumPath: aPath));
}
private MediaFile GetPictureMediaFile(ALAsset asset, long index = 0)
{
var rep = asset.DefaultRepresentation;
if (rep == null)
{
return(null);
}
var cgImage = rep.GetImage();
UIImage image = null;
if (cgImage == null)
{
var fetch = PHAsset.FetchAssets(new[] { asset.AssetUrl }, null);
var ph = fetch.firstObject as PHAsset;
var manager = PHImageManager.DefaultManager;
var phOptions = new PHImageRequestOptions
{
Version = PHImageRequestOptionsVersion.Original,
NetworkAccessAllowed = true,
Synchronous = true
};
phOptions.ProgressHandler = (double progress, NSError error, out bool stop, NSDictionary info) =>
{
Debug.WriteLine($"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;
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));
}
