wavdir2sfz - create sfz soundfonts from directory containing wav audiofiles with notes in their filenames

wavdir2sfz

#!/bin/bash
# Copyright 2012, Leon van Kammen (Coder of Salvation), All rights reserved.
# 
# Native instrument comes with a huge library of sounds (The Maschine Library) for Maschine.
# Wouldnt it be nice if non-maschine owners can use these instruments?
# Lot of times when I see multisamples in directories, I'd like to have an .sfz soundfont for them
# (instead of playing it with some kind of massivegui vst/pluginplayer).
# A typical directory could look like :
#  
#   Samples/Instrument/Bass1/Bass1 c1.wav
#   Samples/Instrument/Bass1/Bass1 c2.wav
#   Samples/Instrument/Bass1/Bass1 e#3.wav
#   Samples/Instrument/Bass1/Bass1 f4.wav
#
# With this tool you can easily create .sfz instruments from directories
#
# Usages: $ wavdir2sfz Samples/Instrument/Bass1 ../ > sfz/Bass1.sfz
#         $ wavdir2sfz Samples/Instrument/Bass1 ../ | sed 's/\//\\/g' > sfz/Bass1_windows.sfz
#         
#         if you know your way with shellscript, its easy to recursively do this in batch
#
# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
# 
#    1. Redistributions of source code must retain the above copyright notice, this list of
#       conditions and the following disclaimer.
# 
#    2. Redistributions in binary form must reproduce the above copyright notice, this list
#       of conditions and the following disclaimer in the documentation and/or other materials
#       provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY Coder of Salvation ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# 
# The views and conclusions contained in the software and documentation are those of the
# authors and should not be interpreted as representing official policies, either expressed
# or implied, of Coder of Salvation 
#
indir="$1"
prefix="$2"
wavs=""
dir_instrument=""
notes=("c" "c#" "d" "d#" "e" "f" "f#" "g" "g#" "a" "a#" "b")
loadindexes=("|" "/" "-" "\\")
loadindex=0
detected=0
notemap=""
header='<group> lovel=1 hivel=127
ampeg_release=0.300000
'

_checkpaths(){
  [ ! -d "$indir"  ] && (echo "dir '$indir' not found"; exit )
  dir_instrument=$(dirname "$indir")
}

_pump(){
  size=${#loadindexes[@]}
  ((size=size-1))
  if [[ $loadindex < $size ]]; then ((loadindex=loadindex+1)); else loadindex=0; fi
}

_notemap(){
  echo "$1";exit
}

generate(){
  _checkpaths
  wavs=$(find "$indir" -name "*wav*")
  printf "C0" > /tmp/notelast
  current=""
  echo "$header"
  [ -f /tmp/notemap ] && rm /tmp/notemap
  for j in {1..6}; do 
    for(( i = 0; i < "${#notes[@]}"; i++ )); do 
      printf "$wavs" | while read file; do 
        wav=$(basename "$file");
        ( tput el; printf "\r[${loadindexes[$loadindex]}] scanning notes...${notes[i]}$j "
          if [[ ${wav,,} = *"${notes[i]}$j"* ]]; then 
            printf "$wav found!\n"; printf "$notemap\n${notes[i]^^}$j|$(cat /tmp/notelast)|$file" >> /tmp/notemap;
            printf "${notes[i]^^}$j" > /tmp/notelast
          fi
        ) 1>&2
      done
      _pump
    done
  done 
  tail -n+2 /tmp/notemap | while read line; do 

    note=$(echo "$line" | cut -d\| -f1)
    last=$(echo "$line" | cut -d\| -f2)
    file=$(echo "$line" | cut -d\| -f3)
    printf "<region> sample=$prefix$file\nlokey=$last\nhikey=$note\npitch_keycenter=$note\n\n"
  done
}

generate