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Diffstat (limited to 'src/helpers/rosegarden-audiofile-importer')
| -rwxr-xr-x | src/helpers/rosegarden-audiofile-importer | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/src/helpers/rosegarden-audiofile-importer b/src/helpers/rosegarden-audiofile-importer new file mode 100755 index 0000000..8cbaa45 --- /dev/null +++ b/src/helpers/rosegarden-audiofile-importer @@ -0,0 +1,270 @@ +#!/bin/bash +# +# Helper application to convert and import audio files for Rosegarden. +# Copyright 2005-2008 Chris Cannam. Distributed under the GNU General +# Public License. +# +# Can take audio files of various kinds as input, always produces WAV +# files that are compatible with Rosegarden as output. +# +# Not actually specific to Rosegarden in any way, except that +# Rosegarden needs to know it can rely on its presence and calling +# interface. +# +# Usage: +# +# rosegarden-audiofile-importer -t [<version>] +# rosegarden-audiofile-importer --conftest [<version>] +# -- Exit successfully if the importer is available and working +# [and is of at least version <version>]. If some of the +# required helper applications are missing, also print to +# stdout a line saying "Required: application1, application2", +# listing the missing programs. +# +# rosegarden-audiofile-importer -l [<version>] +# -- List known file extensions (e.g. ogg wav flac). Return code +# is same as for -t (so can combine two calls into one) +# +# rosegarden-audiofile-importer [-r <rate>] -w <inputfile> +# -- Test whether any work is needed to convert <inputfile>, either +# because it isn't in a Rosegarden-compatible format or because +# its samplerate differs from <rate>. Exit successfully if no +# work is required; return error code 2 if conversion required, +# 3 if resampling required, 4 if both required, 1 for other error. +# +# rosegarden-audiofile-importer [-r <rate>] -c <inputfile> <outputfile> +# -- Convert <inputfile> [and resample if necessary] and write to +# <outputfile> as a WAV file +# +# N.B. <outputfile> must not already exist -- this program will not +# overwrite it, but will fail instead if it does + +version=1 + +OTHER_ERROR=1 +CONVERSION_REQD=2 +RESAMPLE_REQD=3 +BOTH_REQD=4 + +echo "rosegarden-audiofile-importer: $@" 1>&2 + +conftest() { + # ssrc is our favourite resampler, but it only works for certain + # samplerates, so we have to have at least one other just in case + if [ -x "`type -path sndfile-resample`" ]; then + return 0 + fi + if [ -x "`type -path sox`" ] && sox -h 2>&1 | grep -q polyphase; then + return 0 + fi + echo "Required: sox OR sndfile-resample" + echo "rosegarden-audiofile-importer: ERROR: No resampler available, failing configuration test" 1>&2 + return 1 +} + +[ -x "`type -path oggdec`" ] && have_oggdec=1 +[ -x "`type -path flac`" ] && have_flac=1 +[ -x "`type -path mpg321`" ] && have_mpg321=1 +[ -x "`type -path sndfile-convert`" -a -x "`type -path sndfile-info`" ] && have_sndfile=1 + +if [ -n "$have_mpg321" ]; then + if ! mpg321 --help 2>&1 | grep -q 'wav N'; then + have_mpg321= + fi +fi + +case "$1" in + -t|--conftest) conftest; exit $?;; + -l) conftest || exit $? + { + [ -n "$have_oggdec" ] && echo ogg + [ -n "$have_flac" ] && echo flac + [ -n "$have_mpg321" ] && echo mp3 + [ -n "$have_sndfile" ] && sndfile-convert --help 2>&1 | \ + grep '^ *[a-z][a-z]* *: ' | awk '{ print $1; }' + } | sort | uniq | fmt -1000 + exit 0;; + -r) rate="$2"; shift; shift;; +esac + +case "$1" in + -w) test_work=1;; + -c) convert=1;; + *) exit 2;; +esac + +conftest || exit $OTHER_ERROR + +infile="$2" +if [ ! -r "$infile" ]; then + echo "rosegarden-audiofile-importer: ERROR: input file \"$infile\" cannot be opened" 1>&2 + exit $OTHER_ERROR +fi + +if [ -n "$convert" ]; then + outfile="$3" + if [ -z "$outfile" ]; then + echo "rosegarden-audiofile-importer: ERROR: output file not specified" 1>&2 + exit $OTHER_ERROR + fi + if [ -f "$outfile" ]; then + echo "rosegarden-audiofile-importer: ERROR: output file \"$outfile\" already exists, not overwriting" 1>&2 + exit $OTHER_ERROR + fi +fi + +base=`basename "$infile"` +stem=${base%.*} +extension=${base##*.} + +extension=`echo $extension | tr '[A-Z]' '[a-z]'` + +# If the file ends in ogg, mp3, wav or flac, we believe it. Otherwise +# use file to see whether it's actually something else + +case "$extension" in + ogg|mp3|wav|flac) ;; + *) case "`file $infile`" in + *Ogg*Vorbis*) extension=ogg;; + *MP3*) extension=mp3;; + *FLAC*) extension=flac;; + esac;; +esac + +case "$extension" in + ogg) converter=oggdec + [ -x "`type -path ogginfo`" ] && filerate=`ogginfo "$infile" | grep '^Rate: ' | awk '{ print $2; }'`;; + mp3) converter=mpg321 + # don't have a helper program to work out rate + ;; + *) filerate=`sndfile-info "$infile" | grep '^Sample Rate :' | awk '{ print $4; }'`;; +esac + +case "$extension" in + wav) ;; + flac) converter=flac; convert_reqd=1;; +ogg|mp3) convert_reqd=1;; + *) converter=sndfile-convert; convert_reqd=1;; +esac + +echo "Extension is $extension, converter is $converter, reqd is $convert_reqd" + +case "$filerate" in [0-9]*);; *) filerate=; intermediate=1;; esac + +[ -n "$filerate" ] && echo "File samplerate is $filerate (requested: $rate)" + +[ -n "$filerate" -a -n "$rate" ] && [ "$filerate" -ne "$rate" ] && resample_reqd=1 +[ -n "$resample_reqd" -a -n "$convert_reqd" ] && intermediate=1 + +[ -n "$intermediate" ] && echo "Using intermediate file" + +if [ -z "$convert" ]; then # -w option + if [ -n "$convert_reqd" ]; then + [ -n "$intermediate" -o -n "$resample_reqd" ] && exit $BOTH_REQD + exit $CONVERSION_REQD; + else + [ -n "$intermediate" -o -n "$resample_reqd" ] && exit $RESAMPLE_REQD + exit 0; + fi +fi + +target="$outfile" +if [ -n "$intermediate" ]; then + target="$outfile.tmp.wav" + if [ -f "$target" ]; then + echo "rosegarden-audiofile-importer: ERROR: intermediate file \"$target\" already exists, not overwriting" 1>&2 + exit $OTHER_ERROR + fi + trap "rm -f \"$target\"" 0 + trap "rm -f \"$target\" \"$outfile\"" 1 2 9 11 15 +else + trap "rm -f \"$outfile\"" 1 2 9 11 15 +fi + +resample() { + _source=$1; shift + _target=$1; shift + simple="" + case "$filerate" in + 192000|176400|96000|88200|48000|44100|24000|22050|12000|11025) + case "$rate" in + 192000|176400|96000|88200|48000|44100|24000|22050|12000|11025) + simple=1;; + esac + esac + done="" + if [ -x "`type -path ssrc`" -a -n "$simple" ]; then + echo "Resampling using ssrc..." 1>&2 + ssrc --rate "$rate" --twopass --dither 4 --profile standard "$_source" "$_target" && done=1 + fi + if [ -z "$done" ]; then + if [ -x "`type -path sndfile-resample`" ]; then + echo "Resampling using sndfile-resample..." 1>&2 + sndfile-resample -to "$rate" -c 0 "$_source" "$_target" || return 4 + else + echo "Resampling using sox..." 1>&2 + sox "$_source" -r "$rate" "$_target" polyphase || return 4 + fi + fi + return 0 +} + +if [ -n "$convert_reqd" ]; then + case "$converter" in + flac) [ -z "$have_flac" -a -n "$have_sndfile" ] && converter=sndfile-convert;; + esac + case "$converter" in + oggdec) + [ -n "$have_oggdec" ] || exit $OTHER_ERROR + oggdec --output "$target" "$infile" || exit $OTHER_ERROR + ;; + mpg321) + [ -n "$have_mpg321" ] || exit $OTHER_ERROR + mpg321 --wav "$target" "$infile" || exit $OTHER_ERROR + ;; + flac) + [ -n "$have_flac" ] || exit $OTHER_ERROR + flac --decode --output-name="$target" "$infile" || exit $OTHER_ERROR + ;; + *) + [ -n "$have_sndfile" ] || exit $OTHER_ERROR + sndfile-convert -pcm16 "$infile" "$target" || exit $OTHER_ERROR + ;; + esac +elif [ -n "$resample_reqd" ]; then + resample "$infile" "$target" || exit $OTHER_ERROR + resample_reqd= +fi + +if [ ! -f "$target" ]; then + echo "rosegarden-audiofile-importer: ERROR: target file not found" 1>&2 + exit $OTHER_ERROR +fi + +if [ -z "$intermediate" ]; then + echo "rosegarden-audiofile-importer: Done" 1>&2 + exit 0 +fi + +if [ -n "$intermediate" -a -n "$rate" -a -z "$filerate" ]; then + filerate=`sndfile-info "$target" | grep '^Sample Rate :' | awk '{ print $4; }'` + case "$filerate" in + [0-9]*) if [ "$filerate" -ne "$rate" ]; then + resample_reqd=1 + fi;; + *) echo "rosegarden-audiofile-importer: ERROR: failed to extract samplerate of intermediate file" 1>&2 + rm "$target" + exit $OTHER_ERROR + ;; + esac +fi + +if [ -n "$resample_reqd" ]; then + resample "$target" "$outfile" || exit $OTHER_ERROR + rm "$target" +else + mv "$target" "$outfile" +fi + +echo "rosegarden-audiofile-importer: Done" 1>&2 +exit 0 |