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## -*- texinfo -*-
## @deftypefn  {} {@var{recorder} =} audiorecorder ()
## @deftypefnx {} {@var{recorder} =} audiorecorder (@var{fs}, @var{nbits}, @var{nchannels})
## @deftypefnx {} {@var{recorder} =} audiorecorder (@var{fs}, @var{nbits}, @var{nchannels}, @var{id})
## Create an audiorecorder object recording 8-bit mono audio at 8000 Hz
## sample rate.
##
## The optional arguments @var{fs}, @var{nbits}, @var{nchannels}, and @var{id}
## specify the sample rate, number of bits per sample, number of channels, and
## recording device ID, respectively.  Device IDs may be found using the
## @code{audiodevinfo} function.
##
## The list of actions for an audiorecorder object are shown below.  All
## methods require an audiorecorder object as the first argument.
##
## @multitable @columnfractions 0.22 0.73
## @headitem Method @tab Description
## @item get @tab Read audiorecorder property values
## @item getaudiodata @tab Return audio data as a numeric matrix
## @item getplayer @tab Return audioplayer loaded with data from audiorecorder
## @item isrecording @tab Return true if audiorecorder is recording
## @item pause @tab Pause recording
## @item play @tab Play audio stored in audiorecorder object
## @item record @tab Record audio in audiorecorder object w/o blocking
## @item recordblocking @tab Record audio in audiorecorder object
## @item resume @tab Resume recording after pause
## @item set @tab Write audiorecorder property values
## @item stop @tab Stop recording
## @end multitable
## @end deftypefn
## @seealso{@audiorecorder/get, @audiorecorder/getaudiodata,
## @audiorecorder/getplayer, @audiorecorder/isrecording,
## @audiorecorder/pause, @audiorecorder/play, @audiorecorder/record,
## @audiorecorder/recordblocking, @audioplayer/resume, @audiorecorder/set,
## @audiorecorder/stop, audiodevinfo, @audioplayer/audioplayer, record}

function recorder = audiorecorder (varargin)

  if (! (nargin == 0 || nargin == 3 || nargin == 4))
    print_usage ();
  endif

  ## FIXME: No input validation in internal C++ function.
  ##        It should occur here.
  recorder.recorder = __recorder_audiorecorder__ (varargin{:});
  recorder = class (recorder, "audiorecorder");

endfunction


%!demo
%! ## Record 1 second of audio and play it back in two ways
%! recorder = audiorecorder (44100, 16, 2);
%! record (recorder, 1);
%! pause (2);
%! player1 = audioplayer (recorder);
%! player2 = getplayer (recorder);
%! play (player1);
%! pause (2);
%! play (player2);
%! pause (2);
%! stop (player1);
%! stop (player2);

## Tests of audiorecorder must not actually record anything.

## Test input validation
%!error <Invalid call> audiorecorder (1)
%!error <Invalid call> audiorecorder (1, 8)
%!error <Invalid call> audiorecorder (1, 8, 2, -1, 5)
