samer@1: classdef sigconst < signal
samer@1: 	properties (GetAccess=private, SetAccess=immutable)
samer@1: 		val
samer@1: 		fs
samer@1: 	end
samer@1: 	methods
samer@1: 		function s=sigconst(val,rate)
samer@1: 			if nargin<2, rate=nan; end
samer@1: 			s.val=reshape(val,size(val,1),1);
samer@1: 			s.fs=rate;
samer@1: 		end
samer@1: 
samer@1: 		function s=tostring(sig), s=sprintf('sigconst(%s)',mat2str(sig.val)); end
samer@1: 		function c=channels(s), c=size(s.val,1); end
samer@1: 		function c=rate(s), c=s.fs; end
samer@1: 		function s=construct(sig)
samer@1: 			s.start   = @nop;
samer@1: 			s.stop    = @nop;
samer@1: 			s.dispose = @nop;
samer@1: 			s.reader = @reader;
samer@1: 
samer@1: 			function r=reader(n)
samer@1: 				r = @next;
samer@1: 				buf=repmat(sig.val,1,double(n));
samer@1: 				function [x,rem]=next, x=buf; rem=0; end
samer@1: 			end
samer@1: 		end
samer@1: 	end
samer@1: end