public Task Save(CompressedBitmapFormat format, float quality, Stream target)
{
return Task.Run(() => {
#if UIKIT
var data = format == CompressedBitmapFormat.Jpeg ? inner.AsJPEG((float)quality) : inner.AsPNG();
data.AsStream().CopyTo(target);
#else
#if UNIFIED
var rect = new CoreGraphics.CGRect();
#else
var rect = new RectangleF();
#endif
var cgImage = inner.AsCGImage(ref rect, null, null);
var imageRep = new NSBitmapImageRep(cgImage);
var props = format == CompressedBitmapFormat.Png ?
new NSDictionary() :
new NSDictionary(new NSNumber(quality), new NSString("NSImageCompressionFactor"));
var type = format == CompressedBitmapFormat.Png ? NSBitmapImageFileType.Png : NSBitmapImageFileType.Jpeg;
var outData = imageRep.RepresentationUsingTypeProperties(type, props);
outData.AsStream().CopyTo(target);
#endif
});
}
/// <summary>
/// Saves the specified color data as an image with the specified format.
/// </summary>
/// <param name="data">An array containing the image's color data.</param>
/// <param name="width">The width of the image in pixels.</param>
/// <param name="height">The height of the image in pixels.</param>
/// <param name="stream">The stream to which to save the image data.</param>
/// <param name="format">The format with which to save the image.</param>
private void Save(Color[] data, Int32 width, Int32 height, Stream stream, ImageFormat format)
{
using (var rep = new NSBitmapImageRep(IntPtr.Zero, width, height, 8, 4, true, false, "NSCalibratedRGBColorSpace", 0, 0))
{
fixed (Color* pData = data)
{
for (int y = 0; y < height; y++)
{
var pSrc = pData + (y * width);
var pDst = (UInt32*)((Byte*)rep.BitmapData + (y * rep.BytesPerRow));
for (int x = 0; x < width; x++)
{
*pDst++ = (*pSrc++).ToArgb();
}
}
}
var filetype = (format == ImageFormat.Png) ? NSBitmapImageFileType.Png : NSBitmapImageFileType.Jpeg;
var properties = new NSDictionary();
using (var imgData = rep.RepresentationUsingTypeProperties(filetype, properties))
{
using (var imgStream = imgData.AsStream())
{
imgStream.CopyTo(stream);
}
}
}
}