update packages

[CreaPhase.git] / octave_packages / m / audio / playaudio.m

diff --git a/octave_packages/m/audio/playaudio.m b/octave_packages/m/audio/playaudio.m
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+## Copyright (C) 1995-2012 John W. Eaton
+##
+## This file is part of Octave.
+##
+## Octave 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 of the License, or (at
+## your option) any later version.
+##
+## Octave 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 Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} {} playaudio (@var{name}, @var{ext})
+## @deftypefnx {Function File} {} playaudio (@var{x})
+## Play the audio file @file{@var{name}.@var{ext}} or the audio data
+## stored in the vector @var{x}.
+## @seealso{lin2mu, mu2lin, loadaudio, saveaudio, setaudio, record}
+## @end deftypefn
+
+## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at>
+## Created: 11 April 1994
+## Adapted-By: jwe
+
+function playaudio (name, ext)
+
+  if (nargin < 1 || nargin > 2)
+    print_usage ();
+  endif
+
+  if (nargin == 1 && isnumeric (name))
+    ## play a vector
+    if (! isvector (name))
+      error ("playaudio: X must be a vector");
+    endif
+    X = name(:) + 127;
+    unwind_protect
+      file = tmpnam ();
+      fid = fopen (file, "wb");
+      fwrite (fid, X, "uchar");
+      fclose (fid);
+      [status, out] = system (sprintf ('cat "%s" > /dev/dsp', file));
+      if (status != 0)
+        system (sprintf ("paplay --raw \"%s\"", file))
+      endif
+    unwind_protect_cleanup
+      unlink (file);
+    end_unwind_protect
+  elseif (nargin >= 1 && ischar (name))
+    ## play a file
+    if (nargin == 1)
+      name = [name ".lin"];
+    elseif (nargin == 2)
+      name = [name "." ext];
+    endif
+    if (any (strcmp (ext, {"lin", "raw"})))
+      [status, out] = system (sprintf ('cat "%s" > /dev/dsp', name));
+      if (status != 0)
+        system (sprintf ('paplay --raw "%s"', name))
+      endif
+    elseif (any (strcmp (ext, {"mu", "au" "snd", "ul"})))
+      [status, out] = system (sprintf ('cat "%s" > /dev/audio', name));
+      if (status != 0)
+        system (sprintf ('paplay "%s"', name))
+      endif
+    else
+      error ("playaudio: unsupported extension '%s'", ext);
+    endif
+  else
+    print_usage ();
+  endif
+
+endfunction
+
+
+%% Test input validation
+%!error playaudio ()
+%!error playaudio (1,2,3)
+%!error <X must be a vector> playaudio (magic (3))
+%!error <unsupported extension> playaudio ("file", "abc")
+%!error playaudio ({"abc"})
+