| 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-SPLICE ======================== | |
| 31 | ||
| 32 | (defclass! sox-splice (sox-input) | |
| 33 | ( | |
| 34 | (gains :accessor gains :initarg :gains :initform nil :documentation *sox-gain-doc*) | |
| 35 | (splice-begin :accessor splice-begin :initarg :splice-begin :initform nil :documentation "Beginning of the splice (sec)") | |
| 36 | (splice-end :accessor splice-end :initarg :splice-end :initform nil :documentation "End of the splice (sec)") | |
| 37 | (fade-type :accessor fade-type :initarg :fade-type :initform nil :documentation "Fade type (linear, half-cosine, quarter-cosine) [symbol]") | |
| 38 | (tolerance :accessor tolerance :initarg :tolerance :initform nil :documentation "Temporal region for searching the best position to make the splice (ms).") | |
| 39 | ) | |
| 40 | (:icon 18) | |
| 41 | (:documentation "Splice together audio sections. | |
| 42 | ||
| 43 | This provides two things over simple audio concatenation: | |
| 44 | A (usually short) cross-fade is applied at the join, and a wave similarity comparison is made to help determine the best place at which to make the join. <tolerance> determines the size of the region within to search (ms). Different envelopes are available for the crossfade. For multiple splices lists of parameters must be provided. | |
| 45 | ||
| 46 | NB. There is a limitation on the lenght of splices: The duration of the splice must be shorter than half of the first input file.") | |
| 47 | ) | |
| 48 | ||
| 49 | ||
| 50 | (defmethod initialize-instance :after ((self sox-splice) &rest l) | |
| 51 | (declare (ignore l)) | |
| 52 | (when (sound self) | |
| 53 | (sox-init-gains self) | |
| 54 | (sox-init-sound self 'list) | |
| 55 | (unless (same-elements-p (sox-sound-channels (sound self))) | |
| 56 | (om-beep-msg "Input audio must have same number of channels.")) | |
| 57 | ) | |
| 58 | ) | |
| 59 | ||
| 60 | #| | |
| 61 | ; It would be better to set splice-begin/end params to the marker points in this class - rather than in the sox-process function | |
| 62 | (defmethod initialize-instance :after ((self sox-splice) &rest initargs) | |
| 63 | (declare (ignore initargs))) | |
| 64 | ||
| 65 | ||
| 66 | (defmethod initialize-instance :after ((self sox-splice) &rest args) | |
| 67 | ;(declare (ignore initargs)) | |
| 68 | (let ((themarkers (markers self)) | |
| 69 | (thebegins (first (mat-trans (markers self)))) | |
| 70 | (theends (second | |
| 71 | (setf (splice-begin self) (get-markers (sound self))) | |
| 72 | (setf (splice-end self) | |
| 73 | (setf (sound self) (sox-sound-path! (sound self))) | |
| 74 | (setf (gains self) (sox-input-convert-gain (gains self))) | |
| 75 | self) | |
| 76 | ||
| 77 | |# | |
| 78 | ||
