;*********************************************************************
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; OM-SoX, (c) 2011-2013 Marlon Schumacher (CIRMMT/McGill University) *
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; http://sourceforge.net/projects/omsox/ *
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; *
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; Multichannel Audio Manipulation and Functional Batch Processing. *
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; DSP based on SoX - (c) C.Bagwell and Contributors *
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; http://sox.sourceforge.net/ *
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;*********************************************************************
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;
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;This program is free software; you can redistribute it and/or
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;modify it under the terms of the GNU General Public License
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;as published by the Free Software Foundation; either version 2
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;of the License, or (at your option) any later version.
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;
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;See file LICENSE for further informations on licensing terms.
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;
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;This program is distributed in the hope that it will be useful,
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;but WITHOUT ANY WARRANTY; without even the implied warranty of
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;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;GNU General Public License for more details.
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;
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;You should have received a copy of the GNU General Public License
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;along with this program; if not, write to the Free Software
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;Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,10 USA.
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;
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;Authors: M. Schumacher
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(in-package :om)
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; ==== SOX-MIX-CONSOLE ========================
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; there's basically 2 options:
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; 1) Use sox-mix-console but in a way that there can be a list of effects which is applied internally to each of the components (drawback: inconsistent handling of polymorphism)
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; 2) Write a 'macro' (as a patch) that does what sox-mix-console does, but explicitly 'fills' a sox-mix object with pipes from (sox-process '(sox-remixes) '(sox-pads))
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(defclass! sox-mix-console (sox-input)
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(
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(gains :accessor gains :initarg :gains :initform nil :documentation *sox-gain-doc*)
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(panning :accessor panning :initform nil :initarg :panning :documentation *sox-panning-doc*)
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(numchannels :accessor numchannels :initform 2 :initarg :numchannels :documentation "Number of output channels for mixing process.")
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)
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(:icon 12) ;918
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(:documentation "Sox-Mix-Console allows mixing and panning inputs on an array of output channels. Inputs do not need to have the same number of channels.
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Multichannel inputs are first mixed into a single channel before panning/mixing with other soundfiles.
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NB: Input audio must have the same samplerate.")
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)
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; pipe input not possible with this class
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; why isn't this using sox-init-panning? not for lists?
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(defmethod initialize-instance :after ((self sox-mix-console) &rest args)
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(when (sound self)
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(let* ((sound-length (length (list! (sound self))))
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(linear-panning (om-scale (arithm-ser 1 sound-length 1) 1 (numchannels self)))
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(panning-list (loop for sound in (list! (sound self))
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for i from 0 to (- sound-length 1) collect
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(if (soundp sound)
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(if (equal (tracknum sound) 0)
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(nth i linear-panning)
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(+ (tracknum sound) (* 0.01 (pan sound))))
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)
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))
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(nunumchannels (+ 1 (floor (list-max panning-list)))))
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(unless (consp (panning self))
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(setf (panning self) panning-list))
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(sox-init-gains self)
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(sox-init-sound self 'list)
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(when (< (numchannels self) (list-max (panning self)))
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(setf (numchannels self) nunumchannels)
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)
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)
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)
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)
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