( resource psdoc, string type, string source, string data, int lenght, int width, int height, int components, int bpc, string params )
Reads an image which is already available in memory. The parameter
source is currently not evaluated and assumed to be
memory. The image data is a sequence of pixels starting
in th upper left corner and ending in the lower right corner. Each pixel
consists of components color components, and each
component has bpc bits.