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|
#!/bin/sh
# Script that converts a file into an mp3 or an m4a file
#
# USAGE:
#
# Called by convert-2mp3.sh, convert-2m4a.sh, convert-2mp4.sh.
#
# The following command line arguments are being used
#
# -x Print converted filename extension and exit
# -f Set converted filename
# -a Artist tag
# -A Album tag
# -T Track tag
# -t Title tag
# -g Genre tag
# -y Year tag
# -c Comment tag
# -q Quality (overwrites standard encoder options)
# For mp3 files this could be "--vbr-new -V<number>".
#
# Return Codes:
# 0 ok
# 1 input file not found
# 2 output file cannot be created
# 3 cannot get info
# 4 cannot exec decoding
# 5 cannot exec encoding
# 6 conversion failed
# 7 unknown option
# Get parameters
while getopts q:a:A:T:t:g:c:y:f:x opt ; do
case "$opt" in
x) echo "$extension"; exit 0 ;;
f) outfile="$OPTARG" ;;
a) artist="$OPTARG" ;;
A) album="$OPTARG" ;;
T) track="$OPTARG" ;;
t) title="$OPTARG" ;;
g) genre="$OPTARG" ;;
y) year="$OPTARG" ;;
c) comment="$OPTARG" ;;
q) ENCODER_OPTS="$OPTARG" ;;
?) exit 7 ;;
esac
done
shift $(($OPTIND - 1))
infile="$1"
infile_extension=${infile##*.}
if [ "$outfile" = "" ]; then
# Build output file
outfile=`basename "$infile"`
outfile=${outfile%.$infile_extension}
tmp=${TMPDIR-/tmp}
outfile="$tmp/$outfile.$extension"
fi
# Default values
[ -z "$comment" ] && comment="Encoded for gtkpod with $ENCODER"
LOG=`dirname "$outfile"`
LOG="$LOG/conversion.log"
echo "Converting \"$infile\" into \"$outfile\"" >> "$LOG"
# Checking input file
if [ "$infile" = "" ]; then
exit 1
fi
if [ ! -f "$infile" ]; then
exit 1
fi
# Checking output file
touch "$outfile" >> "$LOG" 2>&1
if [ "x$?" != "x0" ]; then
exit 2
fi
# Check for the existence of encoder
encoder=`which $ENCODER` >> "$LOG" 2>&1
if [ -z "$encoder" ]; then
exit 5
fi
# Determine decoder
# Convert the source extension to lowercase.
filetype=`echo ${infile_extension}| tr '[:upper:]' '[:lower:]'`
case "$filetype" in
flac) decoder="flac" ; options="-d -c --" ;;
oga|ogg|ogv|ogx)
# Quiet mode is needed to workaround a bug in oggdec
# 1.4 which prints the version banner to stdout, which
# then corrupts the decoded track.
decoder="oggdec" ; options="--quiet --output - --" ;;
m4a) decoder="faad" ; options="-o -" ;;
wav) decoder="" ;;
*) decoder="ffmpeg" ;;
esac
# Check for the existence of decoder
if [ $decoder ]; then
decoder=`which "$decoder"` >> "$LOG" 2>&1
if [ -z "$decoder" ]; then
exit 4
fi
fi
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