;*********************************************************************
; OM-SoX, (c) 2011-2013 Marlon Schumacher (CIRMMT/McGill University) *
;             http://sourceforge.net/projects/omsox/                 *
;                                                                    *
;  Multichannel Audio Manipulation and Functional Batch Processing.  *
;        DSP based on SoX - (c) C.Bagwell and Contributors           *
;                  http://sox.sourceforge.net/                       *
;*********************************************************************
;
;This program 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 2
;of the License, or (at your option) any later version.
;
;See file LICENSE for further informations on licensing terms.
;
;This program 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 this program; if not, write to the Free Software
;Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,10 USA.
;
;Authors: M. Schumacher

(in-package :om)

; ==== SOX-SPLIT ========================

; might become a subclass of sox-remix
(defclass! sox-split (sox-input)
           (
            (gains :accessor gains :initarg :gains :initform nil :documentation *sox-gain-doc*)
            (channels :accessor channels :initarg :channels :initform nil :documentation *sox-channel-matrix-doc*)
            )
           (:icon 17) 
           (:documentation "Split multichannel audio into individual channels. 

<channels> optionally allows to specify combinations and order of input-channels (default: all channels in ascending order).")
           )

; redundancy between sox-remix and sox-split here?
(defmethod initialize-instance :after ((self sox-split) &rest args)
  (declare (ignore args))
  (sox-init-gains self)
  (when (sound self)
      (let* ((thechannels (or (channels self) (arithm-ser 1 (sox-sound-channels (sound self)) 1)))  
;check whether the gains are taken care of in sox-input
             (newgains (if (equal (length (gains self)) (length thechannels))
                           (gains self)
                         (repeat-n (gains self) (length thechannels))))
             )
        (setf (channels self) thechannels)
        (setf (gains self) (flat newgains))
        ))
  (sox-init-sound self 'atom)       
        )

; (when (> (list-max channels) (sox-sound-channels (sound self)))
; (om-msg-beep "Channels not existent in input source."))