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// Scicos
//
// Copyright (C) INRIA - METALAU Project <scicos@inria.fr>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// See the file ../license.txt
//
function [x,y,typ]=VARIABLE_DELAY(job,arg1,arg2)
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1;
graphics=arg1.graphics;
exprs=graphics.exprs
model=arg1.model;nin=model.in(1)
while %t do
[ok,T,init,N,exprs]=scicos_getvalue("Set delay parameters",..
["Max delay";"initial input";"Buffer size"],..
list("vec",1,"vec",1,"vec",1),..
exprs);
if ~ok then
break,
end
if N<2 then
message("Buffer must be larger than 2")
ok=%f
end
if T<=0 then
message("Delay must be positive")
ok=%f
end
if ok then
[model,graphics,ok]=check_io(model,graphics,[-1;1],-1,[],[])
end
if ok then
graphics.exprs=exprs;
model.rpar=[T;init];
model.ipar=N
x.graphics=graphics;
x.model=model
break
end
end
case "define" then
nin=1
T=1
init=0
N=1024
model=scicos_model()
model.sim=list("variable_delay",4)
model.in=[nin;1]
model.out=nin
model.rpar=[T,init];
model.ipar=N
model.blocktype="d"
model.dep_ut=[%f %f]
exprs=[string(T);string(init);string(N)];
gr_i=[]
x=standard_define([3 2],model,exprs,gr_i)
end
endfunction
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