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|
#!/bin/sh
############################################################################
#
# Run the LAME encoder on multiple files, with option to delete .wav files
# after encoding. "mlame -?" will give instructions.
#
# Robert Hegemann
# modified on request: Frank Klemm <pfk@uni-jena.de>
#
############################################################################
# encoder path to use
mp3coder="lame"
mp3analyzer="mlame_corr"
# default options to use
options_low="-h -d -mj -b 128"
options_high="-h -d -mj -V 1 -b 112 -B 320"
options=$options_high
# remove source?
removesource=false
# force overwrite of destination
testoverwrite=true
# waiting after error report n seconds
errordelay=1
helptext="\n\
This script runs the LAME mp3 encoder on multiple files: \n\n\
$0 [options] <file 1> ... <file n>\n\
\n\
options:\n\
-? this help text\n\
-r remove files after encoding\n\
-f force overwrite of destination if exists\n\
-l low quality settings\n\
-h high quality settings\n\
-o \"<lame options>\" overrides script default options
\n\
example:\n\
$0 -r -f -o \"-v -V 0 -b 112\" a*.wav z*.aif g*.mp?\n\
\n\
"
# process command-line options
# this could be extended to fake the
# commandline interface of the mp3encoder
while getopts ":o:r:h:l:f" optn; do
case $optn in
o ) options=$OPTARG # replace default options
echo New lame options are \'$options\'
;;
r ) removesource=true
echo Removing source files after successfully converting
;;
f ) testoverwrite=false
echo Force overwriting existing destination files
;;
h ) options=$options_high
;;
l ) options=$options_low
;;
\? ) printf "$helptext"
sleep $errordelay
exit 1
;;
esac
done
shift $(($OPTIND - 1))
# no files remaining?
if [ "$1" = "" ]; then
printf "$helptext"
sleep $errordelay
exit 1
fi
# process input-files
for src in "$@"; do
case $src in
*[.][wW][aA][vV] )
dst=${src%[.][wW][aA][vV]}.mp3
if [ -f "$src" ]; then
if [ $testoverwrite = true -a -f "$dst" ]; then
echo \'$dst\' already exists, skipping
sleep $errordelay
elif $mp3coder $options `$mp3analyzer "$src"` "$src" "$dst"; then
if [ $removesource = true ]; then
rm -f "$src"
fi
else
echo converting of \'$src\' to \'$dst\' failed
sleep $errordelay
fi
else
echo No source file \'$src\' found.
sleep $errordelay
fi
;;
*[.][aA][iI][fF] )
dst=${src%[.][aA][iI][fF]}.mp3
if [ -f "$src" ]; then
if [ $testoverwrite = true -a -f "$dst" ]; then
echo \'$dst\' already exists, skipping
sleep $errordelay
elif $mp3coder $options "$src" "$dst"; then
if [ $removesource = true ]; then
rm -f "$src"
fi
else
echo converting of \'$src\' to \'$dst\' failed
sleep $errordelay
fi
else
echo No source file \'$src\' found.
sleep $errordelay
fi
;;
*[.][aA][iI][fF][fF] )
dst=${src%[.][aA][iI][fF][fF]}.mp3
if [ -f "$src" ]; then
if [ $testoverwrite = true -a -f "$dst" ]; then
echo \'$dst\' already exists, skipping
sleep $errordelay
elif $mp3coder $options "$src" "$dst"; then
if [ $removesource = true ]; then
rm -f "$src"
fi
else
echo converting of \'$src\' to \'$dst\' failed
sleep $errordelay
fi
else
echo No source file \'$src\' found.
sleep $errordelay
fi
;;
*[.][mM][pP][gG12] )
dst=${src%[.][mM][pP][gG12]}.mp3
if [ -f "$src" ]; then
if [ $testoverwrite = true -a -f "$dst" ]; then
echo \'$dst\' already exists, skipping
sleep $errordelay
elif $mp3coder $options "$src" "$dst"; then
if [ $removesource = true ]; then
rm -f "$src"
fi
else
echo converting of \'$src\' to \'$dst\' failed
sleep $errordelay
fi
else
echo No source file \'$src\' found.
sleep $errordelay
fi
;;
*[.][mM][pP]3 )
dst=${src%[.][mM][pP]3}-new-converted-file.${src##*.}
if [ -f "$src" ]; then
if [ $testoverwrite = true -a -f "$dst" ]; then
echo \'$dst\' already exists, skipping
sleep $errordelay
elif $mp3coder $options "$src" "$dst"; then
if [ $removesource = true ]; then
mv -f "$dst" "$src"
fi
else
echo converting of \'$src\' to \'$dst\' failed
sleep $errordelay
fi
else
echo No source file \'$src\' found.
sleep $errordelay
fi
;;
* ) # the rest
echo warning: File extention \'.${src##*.}\' not supported
sleep $errordelay
;;
esac
done
|
