diff signals/@sigmap/sigmap.m @ 1:289445d368a7

import.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/signals/@sigmap/sigmap.m	Wed Dec 19 22:46:05 2012 +0000
@@ -0,0 +1,40 @@
+classdef sigmap < signal
+	properties (GetAccess=private, SetAccess=immutable)
+		fun
+		sig
+		chans
+	end
+	methods
+		function s=sigmap(f,sig,chf)
+			if nargin<3, chf=@(c1)size(f(zeros(c1,1)),1); end
+			s.fun=f;
+			s.sig=sig;
+			s.chans=chf(channels(sig));
+		end
+
+		function s=tostring(sig)
+			s=sprintf('map(%s,%s)',tostring(sig.fun),tostring(sig.sig));
+		end
+
+		function c=rate(s), c=rate(s.sig); end
+		function c=channels(s), c=s.chans; end
+
+		function s=construct(sig)
+			f=sig.fun;
+			s1=construct(sig.sig);
+			s.start   = s1.start;
+			s.stop    = s1.stop;
+			s.dispose = s1.dispose;
+			s.reader  = @reader;
+
+			function r=reader(n)
+				r1=s1.reader(n);
+				r =@next;
+				function [x,rem]=next
+					[x1,rem]=r1();
+					x=f(x1);
+				end
+			end
+		end
+	end
+end