srcCollectAttr

strCollectAttr collect frame attribute from a framesource
  attr = srcCollectAttr( src, attrnames... )
    src -- frame source
    attrnames -- names of attributes
    attr -- struct with fields corresponding to the attributes

0001 function attr = srcCollectAttr( src, varargin )
0002 %strCollectAttr collect frame attribute from a framesource
0003 %  attr = srcCollectAttr( src, attrnames... )
0004 %    src -- frame source
0005 %    attrnames -- names of attributes
0006 %    attr -- struct with fields corresponding to the attributes
0007 
0008   if ischar(src)
0009       src = evalin(src,'caller');
0010   end
0011   sdcr = srcGetDcr(src);
0012   for k=1:sdcr.N
0013       imgs = srcGetFr( src, k );
0014       res = struct;
0015       for fi=1:length(varargin)
0016         fn = varargin{fi};
0017         res = setfield( res, fn, getfield( imgs{1}.imgs(1), fn ) );
0018       end
0019       attr(k)=res;
0020   end