Mercurial > octave
view scripts/audio/@audiorecorder/getaudiodata.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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## Copyright (C) 2013-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## 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 ## <https://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {@var{data} =} getaudiodata (@var{recorder}) ## @deftypefnx {} {@var{data} =} getaudiodata (@var{recorder}, @var{datatype}) ## Return recorder audio data as a matrix with values between -1.0 and 1.0 ## and with as many columns as there are channels in the recorder. ## ## Given the optional argument @var{datatype}, convert the recorded data ## to the specified type, which may be one of @qcode{"double"}, ## @qcode{"single"}, @qcode{"int16"}, @qcode{"int8"} or @qcode{"uint8"}. ## @end deftypefn function data = getaudiodata (varargin) if (nargin < 1 || nargin > 2) print_usage (); endif recorder = varargin{1}; if (nargin == 1) data = __recorder_getaudiodata__ (struct (recorder).recorder); else data = __recorder_getaudiodata__ (struct (recorder).recorder); type = varargin{2}; switch (type) case "int16" data = int16 (data * (2.0 ^ 15)); case "int8" data = int8 (data * (2.0 ^ 7)); case "uint8" data = uint8 ((data + 1.0) * 0.5 * (2.0 ^ 8 - 1)); endswitch endif if (get (recorder, "NumberOfChannels") == 2) data = data'; else data = data(1,:)'; endif endfunction