| commit | author | age | ||
| 92c40d | 1 | ;********************************************************************* |
| AN | 2 | ; OM-SoX, (c) 2011-2013 Marlon Schumacher (CIRMMT/McGill University) * |
| 3 | ; http://sourceforge.net/projects/omsox/ * | |
| 4 | ; * | |
| 5 | ; Multichannel Audio Manipulation and Functional Batch Processing. * | |
| 6 | ; DSP based on SoX - (c) C.Bagwell and Contributors * | |
| 7 | ; http://sox.sourceforge.net/ * | |
| 8 | ;********************************************************************* | |
| 9 | ; | |
| 10 | ;This program is free software; you can redistribute it and/or | |
| 11 | ;modify it under the terms of the GNU General Public License | |
| 12 | ;as published by the Free Software Foundation; either version 2 | |
| 13 | ;of the License, or (at your option) any later version. | |
| 14 | ; | |
| 15 | ;See file LICENSE for further informations on licensing terms. | |
| 16 | ; | |
| 17 | ;This program is distributed in the hope that it will be useful, | |
| 18 | ;but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 | ;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 | ;GNU General Public License for more details. | |
| 21 | ; | |
| 22 | ;You should have received a copy of the GNU General Public License | |
| 23 | ;along with this program; if not, write to the Free Software | |
| 24 | ;Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,10 USA. | |
| 25 | ; | |
| 26 | ;Authors: M. Schumacher | |
| 27 | ||
| 28 | (in-package :om) | |
| 29 | ||
| 30 | ; ==== SOX-PAN ======================== | |
| 31 | ||
| 32 | (defclass! sox-pan (sox-input) | |
| 33 | ( | |
| 34 | (gains :accessor gains :initarg :gains :initform nil :documentation *sox-gain-doc*) | |
| 35 | (panning :accessor panning :initform nil :initarg :panning :documentation *sox-panning-doc*) | |
| 36 | (numchannels :accessor numchannels :initform nil :initarg :numchannels :documentation "Number of available output channels for panning.") | |
| 37 | ) | |
| 38 | (:icon 13) | |
| 39 | (:documentation "Sox-Pan allows panning a sound between a pair of adjacent channels. | |
| 40 | ||
| 41 | NB. Multichannel input is first summed into a single channel before panning.") | |
| 42 | ) | |
| 43 | ||
| 44 | ; possibly replace numchannels with out-channels | |
| 45 | ; Note: the slot "gains" should actually better be "gain" here (atom), not "gains" | |
| 46 | ; - this is inherited from sox-input | |
| 47 | ||
| 48 | (defmethod initialize-instance :after ((self sox-pan) &rest args) | |
| 49 | (declare (ignore args)) | |
| 50 | (when (sound self) | |
| 51 | (unless (numchannels self) (setf (numchannels self) 2)) | |
| 52 | (sox-init-gains self) | |
| 53 | (sox-init-panning self) | |
| 54 | (sox-init-sound self 'atom) | |
| 55 | (when (< (numchannels self) (+ 1 (floor (panning self)))) | |
| 56 | (setf (numchannels self) (+ 1 (floor (panning self)))) | |
| 57 | ) | |
| 58 | ) | |
| 59 | ) | |
| 60 | ||
| 61 | #| | |
| 62 | (loop for sound in (list! (sound self)) | |
| 63 | for i from 0 to (- sound-length 1) collect | |
| 64 | (if (equal (tracknum sound) 0) | |
| 65 | (nth i panning-list) | |
| 66 | (+ (tracknum sound) (* 0.01 (pan sound)))) | |
| 67 | |# | |
| 68 | ||
| 69 | ||
| 70 | ||
| 71 | #| | |
| 72 | There's a number of options for dealing with 'pan' and 'tracknum' in sound objects | |
| 73 | 1) leave it as is, meaning, sox-mix-console does not consider (overrides) pan or tracknum | |
| 74 | 2) add the tracknum and pan parameters to sox-input -> consequence: cannot use paths as inputs to classes | |
| 75 | 3) work with sound objects in sox-input classes (no conversion in sox-input) -> requires changes in sox-process | |
| 76 | |# | |
