Mercurial > octave-nkf
view scripts/audio/record.m @ 19717:f96671da51a6
record.m: Improve input validation
* record.m: Improve input validation. Avoid attempting to record for zero
duration. Add %!tests.
author | Mike Miller <mtmiller@ieee.org> |
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date | Sun, 08 Feb 2015 23:24:45 -0500 |
parents | 890ff06d84ce |
children | 4197fc428c7d |
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## Copyright (C) 2015 Mike Miller ## Copyright (C) 1995-2013 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} {} record (@var{sec}) ## @deftypefnx {Function File} {} record (@var{sec}, @var{fs}) ## Record @var{sec} seconds of audio from the system's default audio input at ## a sampling rate of 8000 samples per second. If the optional argument ## @var{fs} is given, it specifies the sampling rate for recording. ## ## For more control over audio recording, use the @code{audiorecorder} class. ## @end deftypefn function x = record (sec, fs) if (nargin == 1) fs = 8000; elseif (nargin != 2) print_usage (); endif if (! (isscalar (sec) && (sec >= 0))) error ("record: recording duration SEC must be a non-negative number"); endif if (! (isscalar (fs) && (fs > 0))) error ("record: sample rate FS must be a positive number"); endif x = []; if (sec > 0) rec = audiorecorder (fs, 16, 1); recordblocking (rec, sec); x = getaudiodata (rec); endif endfunction ## Tests of record must not actually record anything. %!assert (isempty (record (0))) %% Test input validation %!error record () %!error record (1,2,3) %!error record (-1) %!error record (1, -1)