Mercurial > octave-antonio
view scripts/audio/@audiorecorder/getaudiodata.m @ 20170:af2b7695f1c4 draft default tip @
gallery.m: clean and vectorize part of qmult.
* scripts/special-matrix/gallery.m: make qmult() follow Octave guidelines, vectorize last for loop in qmult().
author | Antonio Pino Robles <data.script93@gmail.com> |
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date | Thu, 28 May 2015 18:32:47 +0200 |
parents | 4197fc428c7d |
children | 7503499a252b |
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## Copyright (C) 2013-2015 Vytautas JanĨauskas ## ## 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} {@var{data} =} getaudiodata (@var{recorder}) ## @deftypefnx {Function File} {@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