Mercurial > hg > octave-nkf
annotate scripts/audio/saveaudio.m @ 13841:0a158dbdb04a
Remove 3 unused warning ids
Removed ids: empty-list-elements, fortran-indexing, complex-cmp-ops.
Renamed ids: string-concat -> mixed-string-concat
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Tue, 08 Nov 2011 09:07:13 -0800 |
| parents | d0b799dafede |
| children | 72c96de7a403 |
| rev | line source |
|---|---|
| 11523 | 1 ## Copyright (C) 1995-2011 John W. Eaton |
| 2313 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 2313 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 2303 | 18 |
| 3426 | 19 ## -*- texinfo -*- |
| 3332 | 20 ## @deftypefn {Function File} {} saveaudio (@var{name}, @var{x}, @var{ext}, @var{bps}) |
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Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
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21 ## Save a vector @var{x} of audio data to the file |
| 3332 | 22 ## @file{@var{name}.@var{ext}}. The optional parameters @var{ext} and |
| 23 ## @var{bps} determine the encoding and the number of bits per sample used | |
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Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
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24 ## in the audio file (see @code{loadaudio}); defaults are @file{lin} and |
| 3332 | 25 ## 8, respectively. |
| 5642 | 26 ## @seealso{lin2mu, mu2lin, loadaudio, playaudio, setaudio, record} |
| 3332 | 27 ## @end deftypefn |
| 2311 | 28 |
| 2312 | 29 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
| 30 ## Created: 5 September 1994 | |
| 31 ## Adapted-By: jwe | |
| 32 | |
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
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33 function saveaudio (name, x, ext, bps) |
| 2325 | 34 |
| 1636 | 35 if (nargin < 2 || nargin > 4) |
| 6046 | 36 print_usage (); |
| 1636 | 37 endif |
| 38 | |
| 39 if (nargin == 2) | |
| 40 ext = "lin"; | |
| 41 endif | |
| 42 | |
| 43 if (nargin < 4) | |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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44 bps = 8; |
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c776f063fefe
Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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45 elseif (bps != 8 && bps != 16) |
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Use uppercase for variable names in error() strings to match Info documentation. Only m-files done.
Rik <octave@nomad.inbox5.com>
parents:
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46 error ("saveaudio: BPS must be either 8 or 16"); |
| 1636 | 47 endif |
| 48 | |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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49 [nr, nc] = size (x); |
| 1636 | 50 if (nc != 1) |
| 51 if (nr == 1) | |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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52 x = x'; |
| 1636 | 53 nr = nc; |
| 54 else | |
| 3458 | 55 error ("saveaudio: X must be a vector"); |
| 1636 | 56 endif |
| 57 endif | |
| 58 | |
| 3167 | 59 num = fopen ([name, ".", ext], "wb"); |
| 1636 | 60 |
| 2325 | 61 if (strcmp (ext, "lin") || strcmp (ext, "raw")) |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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62 if (bps == 8) |
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c776f063fefe
Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
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diff
changeset
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63 ld = max (abs (x)); |
| 1636 | 64 if (ld > 127) # convert 16 to 8 bit |
| 3426 | 65 if (ld < 16384) |
| 66 sc = 64 / ld; | |
| 67 else | |
| 68 sc = 1 / 256; | |
| 69 endif | |
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
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70 x = fix (x * sc); |
| 1636 | 71 endif |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
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changeset
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72 x = x + 127; |
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c776f063fefe
Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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73 c = fwrite (num, x, "uchar"); |
| 1636 | 74 else |
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11469
c776f063fefe
Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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75 c = fwrite (num, x, "short"); |
| 1636 | 76 endif |
| 3471 | 77 elseif (strcmp (ext, "mu") || strcmp (ext, "au") |
| 10549 | 78 || strcmp (ext, "snd") || strcmp (ext, "ul")) |
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11469
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Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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79 y = lin2mu (x); |
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c776f063fefe
Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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80 c = fwrite (num, y, "uchar"); |
| 1636 | 81 else |
| 82 fclose (num); | |
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Print name of function in error() string messages.
Rik <octave@nomad.inbox5.com>
parents:
10549
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changeset
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83 error ("saveaudio: unsupported extension"); |
| 1636 | 84 endif |
| 85 | |
| 86 fclose (num); | |
| 2325 | 87 |
| 1636 | 88 endfunction |