How to determine image size

[VitAR]

Hi All.

How to determine image size without loading image fully into memory?

I need to chek is there enough memory before loading image. How can I do thes?

Thank You.

[Galfar]

This would be very helpful but unfortunately is not supported.

For each image format this must be done differently but at least the most common formats (JPEG, PNG) would be nice.