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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} playaudio (@var{name}, @var{ext}) |
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22 ## @deftypefnx {Function File} {} playaudio (@var{x}) |
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23 ## Plays the audio file @file{@var{name}.@var{ext}} or the audio data |
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24 ## stored in the vector @var{x}. |
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25 ## @end deftypefn |
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26 ## |
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27 ## @seealso{lin2mu, mu2lin, loadaudio, saveaudio, setaudio, and record} |
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28 |
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29 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
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30 ## Created: 11 April 1994 |
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31 ## Adapted-By: jwe |
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32 |
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33 function playaudio (name, ext) |
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34 |
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35 usage_msg = "playaudio (name, ext) or playaudio (X)"; |
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36 |
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37 if (nargin == 1 && isvector (name) && ! isstr (name)) |
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38 ## play a vector |
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39 [nr, nc] = size (name); |
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40 if (nc != 1) |
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41 if (nr == 1) |
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42 name = name'; |
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43 nr = nc; |
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44 else |
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45 error ("playaudio: X must be a vector"); |
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46 endif |
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47 endif |
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48 X = name + 127; |
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49 unwind_protect |
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50 file = tmpnam (); |
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51 num = fopen (file, "wb"); |
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52 c = fwrite (num, X, "uchar"); |
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53 fclose (num); |
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54 system (sprintf ("cat \"%s\" > /dev/dsp", file)); |
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55 unwind_protect_cleanup |
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56 unlink (file); |
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57 end_unwind_protect |
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58 elseif (nargin >= 1 && isstr (name)) |
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59 ## play a file |
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60 if (nargin == 1) |
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61 name = [name, ".lin"]; |
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62 elseif (nargin == 2) |
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63 name = [name, ".", ext]; |
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64 else |
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65 usage (usage_msg); |
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66 endif |
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67 if (strcmp (ext, "lin") || strcmp (ext, "raw")) |
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68 system (sprintf ("cat \"%s\" > /dev/dsp", name)); |
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69 elseif (strcmp (ext, "mu") || strcmp (ext, "au") |
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70 || strcmp (ext, "snd") || strcmp (ext, "ul")) |
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71 system (sprintf ("cat \"%s\" > /dev/audio", name)); |
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72 else |
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73 error ("playaudio does not support given extension"); |
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74 endif |
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75 else |
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76 usage (usage_msg); |
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77 endif |
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78 |
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79 endfunction |
