interpreter/lib/src/libsndfile-1.0.25/Octave/sndfile_play.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_play (@var{data, fs})
  19 ## Play @var{data} at sample rate @var{fs} using the sndfile-play
  20 ## program.
  21 ## @end deftypefn
  22
  23 ## Author: Erik de Castro Lopo <erikd@mega-nerd.com>
  24 ## Description: Play the given data as a sound file
  25
  26 function sndfile_play (data, fs)
  27
  28 if nargin != 2,
  29         error ("Need two input arguments: data and fs.") ;
  30         endif
  31
  32 if (max (size (fs)) > 1),
  33         error ("Second parameter fs must be a single value.") ;
  34         endif
  35
  36 [nr nc] = size (data) ;
  37
  38 if (nr > nc),
  39         data = data' ;
  40         endif
  41
  42 samplerate = fs ;
  43 wavedata = data ;
  44
  45 filename = tmpnam () ;
  46
  47 cmd = sprintf ("save -mat-binary %s fs data", filename) ;
  48
  49 eval (cmd) ;
  50
  51 cmd = sprintf ("sndfile-play %s", filename) ;
  52
  53 [output, status] = system (cmd) ;
  54
  55 if (status),
  56         disp (outout) ;
  57         endif
  58
  59 endfunction