通过ushort创建一个BitmapImage []

Question

Is it possible to create a BitmapImage from a ushort array? and if so how?

At the minute I'm creating a Bitmap, converting it to a Bitmap array and displaying it, but this is too slow, I need to continuously update the image (live video feed), while each frame is being created the UI studders, this is making my app very slow when video is running. So I need to get my ushort[] into a BitmapImage as fast as possible

Thanks, Eamonn

Answer 1

here you have an example of how to get a BitmapImage through a MemoryStream, this might help you

you can use BitConverter to convert ushorts to byte for input to MemoryStream

Answer 2

Assuming you're working with values between 0 and 255 you could cast it into an array of bytes and then load it into a MemoryStream :

// Please note that with values higher than 255 the program will throw an exception
checked
{
    ushort[] values = { 200, 100, 30/*, 256*/ };
    var bytes = (from value in values
                 select (byte)value).ToArray();

    // Taken from: http://stackoverflow.com/questions/5346727/wpf-convert-memory-stream-to-bitmapimage
    using (var stream = new MemoryStream(data))
    {
        var bitmap = new BitmapImage();
        bitmap.BeginInit();
        bitmap.StreamSource = stream;
        bitmap.CacheOption = BitmapCacheOption.OnLoad;
        bitmap.EndInit();
        bitmap.Freeze();
    }
}