ffmpeg/tests/fate-run.sh

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#! /bin/sh
export LC_ALL=C
base=$(dirname $0)
. "${base}/md5.sh"
base64=tests/base64${HOSTEXECSUF}
test="${1#fate-}"
target_samples=$2
target_exec=$3
target_path=$4
command=$5
cmp=${6:-diff}
ref=${7:-"${base}/ref/fate/${test}"}
fuzz=${8:-1}
threads=${9:-1}
thread_type=${10:-frame+slice}
cpuflags=${11:-all}
cmp_shift=${12:-0}
cmp_target=${13:-0}
size_tolerance=${14:-0}
cmp_unit=${15:-2}
gen=${16:-no}
hwaccel=${17:-none}
report_type=${18:-standard}
keep=${19:-0}
outdir="tests/data/fate"
outfile="${outdir}/${test}"
errfile="${outdir}/${test}.err"
cmpfile="${outdir}/${test}.diff"
repfile="${outdir}/${test}.rep"
target_path(){
test ${1} = ${1#/} && p=${target_path}/
echo ${p}${1}
}
# $1=value1, $2=value2, $3=threshold
# prints 0 if absolute difference between value1 and value2 is <= threshold
compare(){
awk "BEGIN { v = $1 - $2; printf ((v < 0 ? -v : v) > $3) }"
}
do_tiny_psnr(){
psnr=$(tests/tiny_psnr${HOSTEXECSUF} "$1" "$2" $cmp_unit $cmp_shift 0) || return 1
val=$(expr "$psnr" : ".*$3: *\([0-9.]*\)")
size1=$(expr "$psnr" : '.*bytes: *\([0-9]*\)')
size2=$(expr "$psnr" : '.*bytes:[ 0-9]*/ *\([0-9]*\)')
val_cmp=$(compare $val $cmp_target $fuzz)
size_cmp=$(compare $size1 $size2 $size_tolerance)
if [ "$val_cmp" != 0 ] || [ "$size_cmp" != 0 ]; then
echo "$psnr"
if [ "$val_cmp" != 0 ]; then
echo "$3: |$val - $cmp_target| >= $fuzz"
fi
if [ "$size_cmp" != 0 ]; then
echo "size: |$size1 - $size2| >= $size_tolerance"
fi
return 1
fi
}
oneoff(){
do_tiny_psnr "$1" "$2" MAXDIFF
}
stddev(){
do_tiny_psnr "$1" "$2" stddev
}
oneline(){
printf '%s\n' "$1" | diff -u -b - "$2"
}
run(){
test "${V:-0}" -gt 0 && echo "$target_exec" $target_path/"$@" >&3
$target_exec $target_path/"$@"
}
runecho(){
test "${V:-0}" -gt 0 && echo "$target_exec" $target_path/"$@" >&3
$target_exec $target_path/"$@" >&3
}
probefmt(){
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_entries format=format_name -print_format default=nw=1:nk=1 "$@"
}
probeaudiostream(){
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_entries stream=codec_name,codec_time_base,sample_fmt,channels,channel_layout:side_data "$@"
}
probetags(){
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_entries format_tags "$@"
}
runlocal(){
test "${V:-0}" -gt 0 && echo ${base}/"$@" ${base} >&3
${base}/"$@" ${base}
}
probeframes(){
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_frames "$@"
}
probechapters(){
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_chapters "$@"
}
probegaplessinfo(){
filename="$1"
shift
run ffprobe${PROGSUF}${EXECSUF} -bitexact -select_streams a -show_entries format=start_time,duration:stream=index,start_pts,duration_ts "$filename" "$@"
pktfile1="${outdir}/${test}.pkts"
framefile1="${outdir}/${test}.frames"
cleanfiles="$cleanfiles $pktfile1 $framefile1"
run ffprobe${PROGSUF}${EXECSUF} -bitexact -select_streams a -of compact -count_packets -show_entries packet=pts,dts,duration,flags:stream=nb_read_packets "$filename" "$@" > "$pktfile1"
head -n 8 "$pktfile1"
tail -n 9 "$pktfile1"
run ffprobe${PROGSUF}${EXECSUF} -bitexact -select_streams a -of compact -count_frames -show_entries frame=pts,pkt_dts,best_effort_timestamp,pkt_duration,nb_samples:stream=nb_read_frames "$filename" "$@" > "$framefile1"
head -n 8 "$framefile1"
tail -n 9 "$framefile1"
}
ffmpeg(){
dec_opts="-hwaccel $hwaccel -threads $threads -thread_type $thread_type"
ffmpeg_args="-nostdin -nostats -noauto_conversion_filters -cpuflags $cpuflags"
for arg in $@; do
[ x${arg} = x-i ] && ffmpeg_args="${ffmpeg_args} ${dec_opts}"
ffmpeg_args="${ffmpeg_args} ${arg}"
done
run ffmpeg${PROGSUF}${EXECSUF} ${ffmpeg_args}
}
ffprobe_demux(){
filename=$1
shift
print_filename=$(basename "$filename")
run ffprobe${PROGSUF}${EXECSUF} -print_filename "${print_filename}" \
-of compact -bitexact -show_format -show_streams -show_packets \
-show_data_hash CRC32 "$filename" "$@"
}
framecrc(){
ffmpeg "$@" -bitexact -f framecrc -
}
ffmetadata(){
ffmpeg "$@" -bitexact -f ffmetadata -
}
framemd5(){
ffmpeg "$@" -bitexact -f framemd5 -
}
crc(){
ffmpeg "$@" -f crc -
}
md5pipe(){
ffmpeg "$@" md5:
}
md5(){
encfile="${outdir}/${test}.out"
cleanfiles="$cleanfiles $encfile"
ffmpeg -y "$@" $(target_path $encfile) || return
do_md5sum $encfile | awk '{print $1}'
}
pcm(){
ffmpeg -auto_conversion_filters "$@" -vn -f s16le -
}
fmtstdout(){
fmt=$1
shift 1
ffmpeg -bitexact "$@" -bitexact -f $fmt -
}
enc_dec_pcm(){
out_fmt=$1
dec_fmt=$2
pcm_fmt=$3
src_file=$(target_path $4)
shift 4
encfile="${outdir}/${test}.${out_fmt}"
cleanfiles=$encfile
encfile=$(target_path ${encfile})
ffmpeg -auto_conversion_filters -i $src_file "$@" -f $out_fmt -y ${encfile} || return
ffmpeg -auto_conversion_filters -bitexact -i ${encfile} -c:a pcm_${pcm_fmt} -fflags +bitexact -f ${dec_fmt} -
}
FLAGS="-flags +bitexact -sws_flags +accurate_rnd+bitexact -fflags +bitexact"
DEC_OPTS="-threads $threads -idct simple $FLAGS"
ENC_OPTS="-threads 1 -idct simple -dct fastint"
enc_dec(){
src_fmt=$1
srcfile=$2
enc_fmt=$3
enc_opt=$4
dec_fmt=$5
dec_opt=$6
ffprobe_opts=$8
encfile="${outdir}/${test}.${enc_fmt}"
decfile="${outdir}/${test}.out.${dec_fmt}"
cleanfiles="$cleanfiles $decfile"
test "$keep" -ge 1 || cleanfiles="$cleanfiles $encfile"
tsrcfile=$(target_path $srcfile)
tencfile=$(target_path $encfile)
tdecfile=$(target_path $decfile)
ffmpeg -auto_conversion_filters -f $src_fmt $DEC_OPTS -i $tsrcfile $ENC_OPTS $enc_opt $FLAGS \
-f $enc_fmt -y $tencfile || return
do_md5sum $encfile
echo $(wc -c $encfile)
ffmpeg -auto_conversion_filters $7 $DEC_OPTS -i $tencfile $ENC_OPTS $dec_opt $FLAGS \
-f $dec_fmt -y $tdecfile || return
do_md5sum $decfile
tests/tiny_psnr${HOSTEXECSUF} $srcfile $decfile $cmp_unit $cmp_shift
test -z $ffprobe_opts || \
run ffprobe${PROGSUF}${EXECSUF} -bitexact $ffprobe_opts $tencfile || return
}
transcode(){
src_fmt=$1
srcfile=$2
enc_fmt=$3
enc_opt=$4
final_encode=$5
ffprobe_opts=$6
additional_input=$7
final_decode=$8
test -z "$additional_input" || additional_input="$DEC_OPTS $additional_input"
encfile="${outdir}/${test}.${enc_fmt}"
test $keep -ge 1 || cleanfiles="$cleanfiles $encfile"
tsrcfile=$(target_path $srcfile)
tencfile=$(target_path $encfile)
ffmpeg -f $src_fmt $DEC_OPTS -i $tsrcfile $additional_input \
$ENC_OPTS $enc_opt $FLAGS -f $enc_fmt -y $tencfile || return
do_md5sum $encfile
echo $(wc -c $encfile)
ffmpeg $DEC_OPTS $final_decode -i $tencfile $ENC_OPTS $FLAGS $final_encode \
-f framecrc - || return
test -z $ffprobe_opts || \
run ffprobe${PROGSUF}${EXECSUF} -bitexact $ffprobe_opts $tencfile || return
}
stream_remux(){
src_fmt=$1
srcfile=$2
enc_fmt=$3
stream_maps=$4
final_decode=$5
ffprobe_opts=$6
encfile="${outdir}/${test}.${enc_fmt}"
test $keep -ge 1 || cleanfiles="$cleanfiles $encfile"
tsrcfile=$(target_path $srcfile)
tencfile=$(target_path $encfile)
ffmpeg -f $src_fmt -i $tsrcfile $stream_maps -codec copy $FLAGS \
-f $enc_fmt -y $tencfile || return
ffmpeg $DEC_OPTS -i $tencfile $ENC_OPTS $FLAGS $final_decode \
-f framecrc - || return
test -z $ffprobe_opts || \
run ffprobe${PROGSUF}${EXECSUF} -bitexact $ffprobe_opts $tencfile || return
}
# FIXME: There is a certain duplication between the avconv-related helper
# functions above and below that should be refactored.
ffmpeg2="$target_exec ${target_path}/ffmpeg${PROGSUF}${EXECSUF}"
raw_src="${target_path}/tests/vsynth1/%02d.pgm"
pcm_src="${target_path}/tests/data/asynth1.sw"
[ "${V-0}" -gt 0 ] && echov=echov || echov=:
echov(){
echo "$@" >&3
}
AVCONV_OPTS="-nostdin -nostats -noauto_conversion_filters -y -cpuflags $cpuflags -filter_threads $threads"
COMMON_OPTS="-flags +bitexact -idct simple -sws_flags +accurate_rnd+bitexact -fflags +bitexact"
DEC_OPTS="$COMMON_OPTS -threads $threads"
ENC_OPTS="$COMMON_OPTS -threads 1 -dct fastint"
run_avconv(){
$echov $ffmpeg2 $AVCONV_OPTS $*
$ffmpeg2 $AVCONV_OPTS $*
}
do_avconv(){
f="$1"
shift
set -- $* ${target_path}/$f
run_avconv $*
do_md5sum $f
echo $(wc -c $f)
}
do_avconv_crc(){
f="$1"
shift
printf "%s " "$f"
run_avconv $* -f crc -
}
lavf_audio(){
t="${test#lavf-}"
outdir="tests/data/lavf"
file=${outdir}/lavf.$t
test "$keep" -ge 1 || cleanfiles="$cleanfiles $file"
do_avconv $file -auto_conversion_filters $DEC_OPTS $1 -ar 44100 -f s16le -i $pcm_src "$ENC_OPTS -metadata title=lavftest" -t 1 -qscale 10 $2
test "$4" = "disable_crc" ||
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS $3 -i $target_path/$file
}
lavf_container(){
t="${test#lavf-}"
outdir="tests/data/lavf"
file=${outdir}/lavf.$t
test "$keep" -ge 1 || cleanfiles="$cleanfiles $file"
do_avconv $file -auto_conversion_filters $DEC_OPTS -f image2 -c:v pgmyuv -i $raw_src $DEC_OPTS -ar 44100 -f s16le $1 -i $pcm_src "$ENC_OPTS -metadata title=lavftest" -b:a 64k -t 1 -qscale:v 10 $2
test "$3" = "disable_crc" ||
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS -i $target_path/$file $3
}
lavf_container_attach() { lavf_container "" "$1 -attach ${raw_src%/*}/00.pgm -metadata:s:t mimetype=image/x-portable-greymap"; }
lavf_container_timecode_nodrop() { lavf_container "" "$1 -timecode 02:56:14:13"; }
lavf_container_timecode_drop() { lavf_container "" "$1 -timecode 02:56:14.13 -r 30000/1001"; }
lavf_container_timecode()
{
lavf_container_timecode_nodrop "$@"
lavf_container_timecode_drop "$@"
lavf_container "" "$1"
}
lavf_container_fate()
{
t="${test#lavf-fate-}"
outdir="tests/data/lavf-fate"
file=${outdir}/lavf.$t
cleanfiles="$cleanfiles $file"
input="${target_samples}/$1"
do_avconv $file -auto_conversion_filters $DEC_OPTS $2 -i "$input" "$ENC_OPTS -metadata title=lavftest" -vcodec copy -acodec copy
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS -i $target_path/$file $3
}
lavf_image(){
nb_frames=13
t="${test#lavf-}"
outdir="tests/data/images/$t"
mkdir -p "$outdir"
file=${outdir}/%02d.$t
if [ "$keep" -lt 1 ]; then
for i in `seq $nb_frames`; do
filename=`printf "$file" $i`
cleanfiles="$cleanfiles $filename"
done
fi
run_avconv $DEC_OPTS -f image2 -c:v pgmyuv -i $raw_src $1 "$ENC_OPTS -metadata title=lavftest" -vf scale -frames $nb_frames -y -qscale 10 $target_path/$file
do_md5sum ${outdir}/02.$t
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS $2 -i $target_path/$file $2
echo $(wc -c ${outdir}/02.$t)
}
lavf_image2pipe(){
t="${test#lavf-}"
t="${t%pipe}"
outdir="tests/data/lavf"
file=${outdir}/${t}pipe.$t
do_avconv $file -auto_conversion_filters $DEC_OPTS -f image2 -c:v pgmyuv -i $raw_src -f image2pipe "$ENC_OPTS -metadata title=lavftest" -t 1 -qscale 10
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS -f image2pipe -i $target_path/$file
}
lavf_video(){
t="${test#lavf-}"
outdir="tests/data/lavf"
file=${outdir}/lavf.$t
test "$keep" -ge 1 || cleanfiles="$cleanfiles $file"
do_avconv $file -auto_conversion_filters $DEC_OPTS -f image2 -c:v pgmyuv -i $raw_src "$ENC_OPTS -metadata title=lavftest" -t 1 -qscale 10 $1 $2
do_avconv_crc $file -auto_conversion_filters $DEC_OPTS -i $target_path/$file $1
}
refcmp_metadata(){
refcmp=$1
pixfmt=$2
fuzz=${3:-0.001}
ffmpeg -auto_conversion_filters $FLAGS $ENC_OPTS \
-lavfi "testsrc2=size=300x200:rate=1:duration=5,format=${pixfmt},split[ref][tmp];[tmp]avgblur=4[enc];[enc][ref]${refcmp},metadata=print:file=-" \
-f null /dev/null | awk -v ref=${ref} -v fuzz=${fuzz} -f ${base}/refcmp-metadata.awk -
}
cmp_metadata(){
refcmp=$1
pixfmt=$2
fuzz=${3:-0.001}
ffmpeg $FLAGS $ENC_OPTS \
-lavfi "testsrc2=size=300x200:rate=1:duration=5,format=${pixfmt},${refcmp},metadata=print:file=-" \
-f null /dev/null | awk -v ref=${ref} -v fuzz=${fuzz} -f ${base}/refcmp-metadata.awk -
}
refcmp_metadata_files(){
file1=$1
file2=$2
refcmp=$3
pixfmt=$4
fuzz=${5:-0.001}
ffmpeg -auto_conversion_filters $FLAGS -i $file1 $FLAGS -i $file2 $ENC_OPTS \
-lavfi "[0:v]format=${pixfmt}[v0];[1:v]format=${pixfmt}[v1];[v0][v1]${refcmp},metadata=print:file=-" \
-f null /dev/null | awk -v ref=${ref} -v fuzz=${fuzz} -f ${base}/refcmp-metadata.awk -
}
refcmp_metadata_transcode(){
srcfile=$1
enc_opt=$2
enc_fmt=$3
enc_ext=$4
shift 4
encfile="${outdir}/${test}.${enc_ext}"
cleanfiles="$cleanfiles $encfile"
tsrcfile=$(target_path $srcfile)
tencfile=$(target_path $encfile)
ffmpeg $DEC_OPTS -i $tsrcfile $ENC_OPTS $enc_opt $FLAGS -y -f $enc_fmt $tencfile || return
refcmp_metadata_files $tencfile $tsrcfile "$@"
}
pixfmt_conversion(){
conversion="${test#pixfmt-}"
outdir="tests/data/pixfmt"
raw_dst="$outdir/$conversion.out.yuv"
file=${outdir}/${conversion}.yuv
cleanfiles="$cleanfiles $raw_dst $file"
run_avconv $DEC_OPTS -r 1 -f image2 -c:v pgmyuv -i $raw_src \
$ENC_OPTS -f rawvideo -t 1 -s 352x288 -pix_fmt $conversion $target_path/$raw_dst
do_avconv $file $DEC_OPTS -f rawvideo -s 352x288 -pix_fmt $conversion -i $target_path/$raw_dst \
$ENC_OPTS -f rawvideo -s 352x288 -pix_fmt yuv444p
}
video_filter(){
filters=$1
shift
label=${test#filter-}
raw_src="${target_path}/tests/vsynth1/%02d.pgm"
printf '%-20s' $label
ffmpeg $DEC_OPTS -f image2 -vcodec pgmyuv -i $raw_src \
$FLAGS $ENC_OPTS -vf "$filters" -vcodec rawvideo -frames:v 5 $* -f nut md5:
}
pixfmts(){
filter=${test#filter-pixfmts-}
filter=${filter%_*}
filter_args=$1
prefilter_chain=$2
nframes=${3:-1}
showfiltfmts="$target_exec $target_path/libavfilter/tests/filtfmts${EXECSUF}"
scale_exclude_fmts=${outfile}_scale_exclude_fmts
scale_in_fmts=${outfile}_scale_in_fmts
scale_out_fmts=${outfile}_scale_out_fmts
in_fmts=${outfile}_in_fmts
# exclude pixel formats which are not supported as input
$showfiltfmts scale | awk -F '[ \r]' '/^INPUT/{ fmt=substr($3, 5); print fmt }' | sort >$scale_in_fmts
$showfiltfmts scale | awk -F '[ \r]' '/^OUTPUT/{ fmt=substr($3, 5); print fmt }' | sort >$scale_out_fmts
comm -12 $scale_in_fmts $scale_out_fmts >$scale_exclude_fmts
$showfiltfmts $filter | awk -F '[ \r]' '/^INPUT/{ fmt=substr($3, 5); print fmt }' | sort >$in_fmts
pix_fmts=$(comm -12 $scale_exclude_fmts $in_fmts)
outertest=$test
for pix_fmt in $pix_fmts; do
test=$pix_fmt
video_filter "${prefilter_chain}scale,format=$pix_fmt,$filter=$filter_args" -pix_fmt $pix_fmt -frames:v $nframes
done
rm $in_fmts $scale_in_fmts $scale_out_fmts $scale_exclude_fmts
test=$outertest
}
gapless(){
sample=$(target_path $1)
extra_args=$2
decfile1="${outdir}/${test}.out-1"
decfile2="${outdir}/${test}.out-2"
decfile3="${outdir}/${test}.out-3"
cleanfiles="$cleanfiles $decfile1 $decfile2 $decfile3"
# test packet data
ffmpeg -auto_conversion_filters $extra_args -i "$sample" -bitexact -c:a copy -f framecrc -y $(target_path $decfile1)
do_md5sum $decfile1
# test decoded (and cut) data
ffmpeg -auto_conversion_filters $extra_args -i "$sample" -bitexact -f wav md5:
# the same as above again, with seeking to the start
ffmpeg -auto_conversion_filters $extra_args -ss 0 -seek_timestamp 1 -i "$sample" -bitexact -c:a copy -f framecrc -y $(target_path $decfile2)
do_md5sum $decfile2
ffmpeg -auto_conversion_filters $extra_args -ss 0 -seek_timestamp 1 -i "$sample" -bitexact -f wav md5:
# test packet data, with seeking to a specific position
ffmpeg -auto_conversion_filters $extra_args -ss 5 -seek_timestamp 1 -i "$sample" -bitexact -c:a copy -f framecrc -y $(target_path $decfile3)
do_md5sum $decfile3
}
gaplessenc(){
sample=$(target_path $1)
format=$2
codec=$3
file1="${outdir}/${test}.out-1"
cleanfiles="$cleanfiles $file1"
# test data after reencoding
ffmpeg -i "$sample" -bitexact -map 0:a -c:a $codec -af aresample -f $format -y "$(target_path "$file1")"
probegaplessinfo "$(target_path "$file1")"
}
audio_match(){
sample=$(target_path $1)
trefile=$2
extra_args=$3
decfile="${outdir}/${test}.wav"
cleanfiles="$cleanfiles $decfile"
ffmpeg -auto_conversion_filters -i "$sample" -bitexact $extra_args -y $(target_path $decfile)
tests/audiomatch${HOSTEXECSUF} $decfile $trefile
}
concat(){
template=$1
sample=$2
mode=$3
extra_args=$4
concatfile="${outdir}/${test}.ffconcat"
packetfile="${outdir}/${test}.ffprobe"
cleanfiles="$concatfile $packetfile"
awk "{gsub(/%SRCFILE%/, \"$sample\"); print}" $template > $concatfile
if [ "$mode" = "md5" ]; then
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_streams -show_packets -safe 0 $extra_args $(target_path $concatfile) | tr -d '\r' > $packetfile
do_md5sum $packetfile
else
run ffprobe${PROGSUF}${EXECSUF} -bitexact -show_streams -show_packets -of compact=p=0:nk=1 -safe 0 $extra_args $(target_path $concatfile)
fi
}
venc_data(){
file=$1
stream=$2
frames=$3
run tools/venc_data_dump${EXECSUF} ${file} ${stream} ${frames} ${threads} ${thread_type}
}
null(){
:
}
# Disable globbing: command arguments may contain globbing characters and
# must be kept verbatim
set -f
exec 3>&2
eval $command >"$outfile" 2>$errfile
err=$?
if [ $err -gt 128 ]; then
sig=$(kill -l $err 2>/dev/null)
test "${sig}" = "${sig%[!A-Za-z]*}" || unset sig
fi
if test -e "$ref" || test $cmp = "oneline" || test $cmp = "null" || test $cmp = "grep" ; then
case $cmp in
diff) diff -u -b "$ref" "$outfile" >$cmpfile ;;
rawdiff)diff -u "$ref" "$outfile" >$cmpfile ;;
oneoff) oneoff "$ref" "$outfile" >$cmpfile ;;
stddev) stddev "$ref" "$outfile" >$cmpfile ;;
oneline)oneline "$ref" "$outfile" >$cmpfile ;;
grep) grep "$ref" "$errfile" >$cmpfile ;;
null) cat "$outfile" >$cmpfile ;;
esac
cmperr=$?
test $err = 0 && err=$cmperr
if [ "$report_type" = "ignore" ]; then
test $err = 0 || echo "IGNORE\t${test}" && err=0 && unset sig
else
test $err = 0 || cat $cmpfile
fi
else
echo "reference file '$ref' not found"
err=1
fi
if [ $err -eq 0 ] && test $report_type = "standard" ; then
unset cmpo erro
else
cmpo="$($base64 <$cmpfile)"
erro="$($base64 <$errfile)"
fi
echo "${test}:${sig:-$err}:$cmpo:$erro" >$repfile
if test $err != 0 && test $gen != "no" ; then
echo "GEN $ref"
cp -f "$outfile" "$ref"
err=$?
fi
if test $err = 0; then
if test $keep -lt 2; then
rm -f $outfile $errfile $cmpfile $cleanfiles
fi
elif test $gen = "no"; then
echo "Test $test failed. Look at $errfile for details."
test "${V:-0}" -gt 0 && cat $errfile
else
echo "Updating reference failed, possibly no output file was generated."
fi
exit $err