%
% Copyright 2001 Free Software Foundation, Inc.
%
% This file is part of GNU Radio
%
% GNU Radio 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 3, or (at your option)
% any later version.
%
% GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
% the Free Software Foundation, Inc., 51 Franklin Street,
% Boston, MA 02110-1301, USA.
%

function v = read_complex_binary (filename, count, start_sample)

  %% usage: read_complex_binary (filename, [count], [start_sample])
  %%
  %%  open filename and return the contents as a column vector,
  %%  treating them as 32 bit complex numbers
  %%

  m = nargchk (1,2,nargin);
  if (m)
    %usage (m);
  end

  if (nargin < 2)
    count = Inf;
    start_sample=0;
  end

  if (nargin < 3)
    start_sample=0;
  end
  
  f = fopen (filename, 'rb');
  if (f < 0)
    v = 0;
  else
    if (start_sample>0)
        bytes_per_sample=4;
        fseek(f,start_sample*bytes_per_sample,'bof');
    end
    t = fread (f, [2, count], 'float');
    fclose (f);
    v = t(1,:) + t(2,:)*i;
    [r, c] = size (v);
    v = reshape (v, c, r);
  end