interpretor/libsndfile-1.0.25/Octave/sndfile_load.m

   1 ## Copyright (C) 2002-2011  Erik de Castro Lopo
   2 ##
   3 ## This program is free software; you can redistribute it and/or modify
   4 ## it under the terms of the GNU General Public License as published by
   5 ## the Free Software Foundation; either version 2, or (at your option)
   6 ## any later version.
   7 ##
   8 ## This program is distributed in the hope that it will be useful, but
   9 ## WITHOUT ANY WARRANTY; without even the implied warranty of
  10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 ## General Public License for more details.
  12 ##
  13 ## You should have received a copy of the GNU General Public License
  14 ## along with this file.  If not, write to the Free Software Foundation,
  15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16
  17 ## -*- texinfo -*-
  18 ## @deftypefn {Function File} {} sndfile_load (@var{filename})
  19 ## Load data from the file given by @var{filename}.
  20 ## @end deftypefn
  21
  22 ## Author: Erik de Castro Lopo <erikd@mega-nerd.com>
  23 ## Description: Load the sound data from the given file name
  24
  25 function [data fs] = sndfile_load (filename)
  26
  27 if (nargin != 1),
  28         error ("Need an input filename") ;
  29         endif
  30
  31 samplerate = -1 ;
  32 samplingrate = -1 ;
  33 wavedata = -1 ;
  34
  35
  36 eval (sprintf ('load -f %s', filename)) ;
  37
  38 if (samplerate > 0),
  39         fs = samplerate ;
  40 elseif (samplingrate > 0),
  41         fs = samplingrate ;
  42 else
  43         error ("Not able to find sample rate.") ;
  44         endif
  45
  46 if (max (size (wavedata)) > 1),
  47         data = wavedata ;
  48 else
  49         error ("Not able to find waveform data.") ;
  50         endif
  51
  52 endfunction