public static byte [] ConvertFromNative(CGImage src, int newWidth, int newHeight)
{
try {
using (var pool = new Foundation.NSAutoreleasePool()) {
var buffer = new byte [newWidth * newHeight * 4];
unsafe
{
fixed(byte *data = &buffer[0])
{
using (var colorSpace = CGColorSpace.CreateDeviceRGB()) {
using (var context = new CGBitmapContext((IntPtr)data, newWidth, newHeight, 8, newWidth * 4, colorSpace, CGImageAlphaInfo.PremultipliedLast)) {
// draw the image to the bitmap context
// this fills the data variable with the image data
context.InterpolationQuality = CGInterpolationQuality.High;
context.DrawImage(new CGRect(0, 0, newWidth, newHeight), src);
}
}
}
}
return(buffer);
}
} catch (Exception e) {
throw new Exception("Convert from Native Exception", e);
}
}
public TValue[] ObjectsForKeys(TKey[] keys, TValue marker)
{
if (keys == null)
{
throw new ArgumentNullException(nameof(keys));
}
if (marker == null)
{
throw new ArgumentNullException(nameof(marker));
}
if (keys.Length == 0)
{
return new TValue [] {}
}
;
using (var pool = new NSAutoreleasePool())
return(NSArray.ArrayFromHandle <TValue> (_ObjectsForKeys(NSArray.From <TKey> (keys).Handle, marker.Handle)));
}