read_char_binary.m

这是用python语言写的一个数字广播的信号处理工具包。利用它

%
% 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_char_binary (filename, count)

  %% usage: read_char (filename, [count])
  %%
  %%  open filename and return the contents, treating them as
  %%  signed short integers
  %%

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

  if (nargin < 2)
    count = Inf;
  end

  f = fopen (filename, 'rb');
  if (f < 0)
    v = 0;
  else
    v = fread (f, count, 'char');
    fclose (f);
  end