view runner/main.cpp @ 77:adce5f7e2917 qt5

Don't need to check for Dataquay, and in fact we can pick up the wrong version if we do. Just assume it is available (building in e.g. sv subdir configuration)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Annotator
    A utility for batch feature extraction from audio files.
    Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London.
    Copyright 2007-2008 QMUL.

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include <vector>
#include <string>
#include <iostream>

#include <QCoreApplication>
#include <QSettings>
#include <QStringList>
#include <QString>
#include <QFileInfo>
#include <QDir>
#include <QSet>

using std::cout;
using std::cerr;
using std::endl;
using std::vector;
using std::string;

#include "../version.h"

#include "base/Exceptions.h"
#include "base/TempDirectory.h"

#include "data/fileio/AudioFileReaderFactory.h"
#include "data/fileio/PlaylistFileReader.h"

#include "transform/Transform.h"
#include "transform/TransformFactory.h"

#include "FeatureExtractionManager.h"
#include "transform/FeatureWriter.h"
#include "FeatureWriterFactory.h"

#include "rdf/RDFTransformFactory.h"

#include <vamp-hostsdk/PluginSummarisingAdapter.h>

#ifdef HAVE_FFTW3
#include <fftw3.h>
#endif

// Desired options:
//
// * output preference:
//   - all data in one file
//   - one file per input file
//   - one file per input file per transform
//   - (any use for: one file per transform?)
//
// * output location:
//   - same directory as input file
//   - current directory
//
// * output filename: 
//   - based on input (obvious choice for one file per input file modes)
//   - specified on command line (obvious choice for all in one file mode)
//
// * output format: one or more of
//   - RDF
//   - AudioDB
//   - Vamp Simple Host format
//   - CSV
//
// * input handling:
//   - run each transform on each input file separately
//   - provide all input files to the same transform, one per channel
//
// * format-specific options:
//   - RDF format: fancy/plain RDF
//   - CSV format: separator, timestamp type
//   note: do the output file/location also count as format-specific options?
//   an output writer that wrote to a database would have different options...
//
// * debug level and progress output
// 
// * other potential options:
//   - ignore version mismatches in Transform specifications
//   - sample rate: force a given rate; use file rate instead of rate in
//     Transform spec
// 
// * other potential instructions:
//   - write out a skeleton Transform file for a specified plugin
//   - write out skeleton RDF for a plugin library (i.e. do the job of
//     RDF template_generator)
//   - verify that RDF for a plugin library matches the plugin
//
// MAYBE:
// * transform(s) to run:
//   - supply transform file names on command line
//   - use all transforms found in a given directory?
//
// MAYBE:
// * input files to transform:
//   - supply file names or URIs on command line
//   - use all files in a given directory or tree

static QString
wrap(QString s, int len, int pfx = 0)
{
    QString ws;
    QStringList sl(s.split(' '));
    int i = 0, c = 0;
    while (i < sl.size()) {
        int wl = sl[i].length();
        if (c + wl < len) {
            if (c > 0) {
                ws += ' ';
                ++c;
            }
        } else {
            if (c > 0) {
                ws += '\n';
                for (int j = 0; j < pfx; ++j) ws += ' ';
                c = 0;
            }
        }
        ws += sl[i];
        c += wl;
        ++i;
    }
    return ws;
}

void usage(QString myname)
{
    set<string> writers = FeatureWriterFactory::getWriterTags();
        
    cerr << endl;
    cerr << "Sonic Annotator v" << RUNNER_VERSION << endl;
    cerr << "A utility for batch feature extraction from audio files." << endl;
    cerr << "Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London." << endl;
    cerr << "Copyright 2007-2011 Queen Mary, University of London." << endl;
    cerr << endl;
    cerr << "This program is free software.  You may redistribute copies of it under the" << endl;
    cerr << "terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>." << endl;
    cerr << "This program is supplied with NO WARRANTY, to the extent permitted by law." << endl;
    cerr << endl;
    cerr << "  Usage: " << myname.toStdString()
         << " [-mr] -t trans.xml [...] -w <writer> [...] <audio> [...]" << endl;
    cerr << "         " << myname.toStdString()
         << " [-mr] -T trans.txt [...] -w <writer> [...] <audio> [...]" << endl;
    cerr << "         " << myname.toStdString()
         << " -s <transform>" << endl;
    cerr << "         " << myname.toStdString()
         << " [-lhv]" << endl;
    cerr << endl;
    cerr << "Where <audio> is an audio file or URL to use as input: either a local file" << endl;
    cerr << "path, local \"file://\" URL, or remote \"http://\" or \"ftp://\" URL." << endl;
    cerr << endl;

    QString extensions = AudioFileReaderFactory::getKnownExtensions();
    QStringList extlist = extensions.split(" ", QString::SkipEmptyParts);
    if (!extlist.empty()) {
        cerr << "The following audio file extensions are recognised:" << endl;
        cerr << "  ";
        int c = 2;
        for (int i = 0; i < extlist.size(); ++i) {
            QString ext = extlist[i];
            if (ext.startsWith("*.")) ext = ext.right(ext.length()-2);
            c += ext.length() + 2;
            if (c >= 80) {
                cerr << "\n  ";
                c -= 78;
            }
            cerr << ext.toStdString();
            if (i + 1 == extlist.size()) cerr << ".";
            else cerr << ", ";
        }
        cerr << endl;
    }

    cerr << "Playlist files in M3U format are also supported." << endl;
    cerr << endl;
    cerr << "Transformation options:" << endl;
    cerr << endl;
    cerr << "  -t, --transform <T> Apply transform described in transform file <T> to" << endl;
    cerr << "                      all input audio files.  You may supply this option" << endl;
    cerr << "                      multiple times.  You must supply this option or -T at" << endl;
    cerr << "                      least once for any work to be done.  Transform format" << endl;
    cerr << "                      may be SV transform XML or Vamp transform RDF.  See" << endl;
    cerr << "                      documentation for examples." << endl;
    cerr << endl;
    cerr << "  -T, --transforms <T> Apply all transforms described in transform files" << endl;
    cerr << "                      whose names are listed in text file <T>.  You may supply" << endl;
    cerr << "                      this option multiple times." << endl;
    cerr << endl;
    cerr << "  -d, --default <I>   Apply the default transform for transform id <I>.  This" << endl;
    cerr << "                      is equivalent to generating a skeleton transform for this" << endl;
    cerr << "                      id (using the -s option, below) and then applying that," << endl;
    cerr << "                      unmodified, with the -t option in the normal way.  Note" << endl;
    cerr << "                      that the results may vary as the implementation's default" << endl;
    cerr << "                      processing parameters are not guaranteed.  Do not use" << endl;
    cerr << "                      this in production systems.  You may supply this option" << endl;
    cerr << "                      multiple times, and mix it with -t and -T." << endl;
    cerr << endl;
    cerr << "  -w, --writer <W>    Write output using writer type <W>." << endl;
    cerr << "                      Supported writer types are: ";
    for (set<string>::const_iterator i = writers.begin();
         i != writers.end(); ) {
        cerr << *i;
        if (++i != writers.end()) cerr << ", ";
        else cerr << ".";
    }
    cerr << endl;
    cerr << "                      You may supply this option multiple times.  You must" << endl;
    cerr << "                      supply this option at least once for any work to be done." << endl;
    cerr << endl;
    cerr << "  -S, --summary <S>   In addition to the result features, write summary feature" << endl;
    cerr << "                      of summary type <S>." << endl;
    cerr << "                      Supported summary types are: min, max, mean, median, mode," << endl;
    cerr << "                      sum, variance, sd, count." << endl;
    cerr << "                      You may supply this option multiple times." << endl;
    cerr << endl;
    cerr << "      --summary-only  Write only summary features; do not write the regular" << endl;
    cerr << "                      result features." << endl;
    cerr << endl;
    cerr << "      --segments <A>,<B>[,...]" << endl;
    cerr << "                      Summarise in segments, with segment boundaries" << endl;
    cerr << "                      at A, B, ... seconds." << endl;
    cerr << endl;

/*!!! This feature not implemented yet (sniff)
    cerr << "  -m, --multiplex     If multiple input audio files are given, use mono" << endl;
    cerr << "                      mixdowns of all files as the input channels for a single" << endl;
    cerr << "                      invocation of each transform, instead of running the" << endl;
    cerr << "                      transform against all files separately." << endl;
    cerr << endl;
*/

    cerr << "  -r, --recursive     If any of the <audio> arguments is found to be a local" << endl;
    cerr << "                      directory, search the tree starting at that directory" << endl;
    cerr << "                      for all supported audio files and take all of those as" << endl;
    cerr << "                      input instead." << endl;
    cerr << endl;
    cerr << "  -f, --force         Continue with subsequent files following an error." << endl;
    cerr << endl;
    cerr << "Housekeeping options:" << endl;
    cerr << endl;
    cerr << "  -l, --list          List all known transform ids to standard output." << endl;
    cerr << endl;
    cerr << "  -s, --skeleton <I>  Generate a skeleton transform file for transform id <I>" << endl;
    cerr << "                      and write it to standard output." << endl;
    cerr << endl;
    cerr << "  -v, --version       Show the version number and exit." << endl;
    cerr << "  -h, --help          Show this help." << endl;

    cerr << endl;
    cerr << "If no -w (or --writer) options are supplied, either the -l -s -v or -h option" << endl;
    cerr << "(or long equivalent) must be given instead." << endl;

    for (set<string>::const_iterator i = writers.begin();
         i != writers.end(); ++i) {
        FeatureWriter *w = FeatureWriterFactory::createWriter(*i);
        if (!w) {
            cerr << "  (Internal error: failed to create writer of this type)" << endl;
            continue;
        }
        FeatureWriter::ParameterList params = w->getSupportedParameters();
        delete w;
        if (params.empty()) {
            continue;
        }
        cerr << endl;
        cerr << "Additional options for writer type \"" << *i << "\":" << endl;
        cerr << endl;
        for (FeatureWriter::ParameterList::const_iterator j = params.begin();
             j != params.end(); ++j) {
            cerr << "  --" << *i << "-" << j->name << " ";
            int spaceage = 16 - int(i->length()) - int(j->name.length());
            if (j->hasArg) { cerr << "<X> "; spaceage -= 4; }
            for (int k = 0; k < spaceage; ++k) cerr << " ";
            QString s(j->description.c_str());
            s = wrap(s, 56, 22);
            cerr << s.toStdString() << endl;
        }
    }

    cerr << endl;
    exit(0);
}

void
listTransforms()
{
    TransformList transforms =
        TransformFactory::getInstance()->getAllTransformDescriptions();

    for (TransformList::const_iterator iter = transforms.begin();
         iter != transforms.end(); ++iter) {
        const TransformDescription &transform = *iter;
        if (transform.type == TransformDescription::Analysis) {
            cout << transform.identifier.toStdString() << endl;
        }
    }
}    

void
printSkeleton(QString id)
{
    Transform transform =
        TransformFactory::getInstance()->getDefaultTransformFor(id);
    cout << "@prefix xsd:      <http://www.w3.org/2001/XMLSchema#> ." << endl
         << "@prefix vamp:     <http://purl.org/ontology/vamp/> ." << endl
         << "@prefix :         <#> ." << endl << endl;
    QString rdf = RDFTransformFactory::writeTransformToRDF
        (transform, ":transform");
    cout << rdf.toStdString();
}    

void
findSourcesRecursive(QString dirname, QStringList &addTo, int &found)
{
    QDir dir(dirname);

    QString printable = dir.dirName().left(20);
    cerr << "\rScanning \"" << printable.toStdString() << "\"..."
         << QString("                    ").left(20 - printable.length()).toStdString()
         << " [" << found << " audio file(s)]";

    QString extensions = AudioFileReaderFactory::getKnownExtensions();
    QStringList extlist = extensions.split(" ", QString::SkipEmptyParts);

    QStringList files = dir.entryList
        (extlist, QDir::Files | QDir::Readable);
    for (int i = 0; i < files.size(); ++i) {
        addTo.push_back(dir.filePath(files[i]));
        ++found;
    }

    QStringList subdirs = dir.entryList
        (QStringList(), QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot);
    for (int i = 0; i < subdirs.size(); ++i) {
        findSourcesRecursive(dir.filePath(subdirs[i]), addTo, found);
    }
}


int main(int argc, char **argv)
{
    QCoreApplication application(argc, argv);

    QCoreApplication::setOrganizationName("QMUL");
    QCoreApplication::setOrganizationDomain("qmul.ac.uk");
    QCoreApplication::setApplicationName("Sonic Annotator");

    QStringList args = application.arguments();
    set<string> requestedWriterTags;
    set<string> requestedTransformFiles;
    set<string> requestedTransformListFiles;
    set<string> requestedDefaultTransforms;
    set<string> requestedSummaryTypes;
    bool force = false;
//!!!    bool multiplex = false;
    bool recursive = false;
    bool list = false;
    bool summaryOnly = false;
    QString skeletonFor = "";
    QString myname = args[0];
    myname = QFileInfo(myname).baseName();
    QStringList otherArgs;
    Vamp::HostExt::PluginSummarisingAdapter::SegmentBoundaries boundaries;

    QString helpStr = myname + ": use -h or --help option for help";

    for (int i = 1; i < args.size(); ++i) {

        QString arg = args[i];
        bool last = ((i + 1) == args.size());
        
        if (arg == "-h" || arg == "--help" || arg == "-?") {
            usage(myname);
        }

        if (arg == "-v" || arg == "--version") {
            std::cout << RUNNER_VERSION << std::endl;
            return 0;
        }

        if (arg == "-w" || arg == "--writer") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string tag = args[++i].toStdString();
                if (requestedWriterTags.find(tag) != requestedWriterTags.end()) {
                    cerr << myname.toStdString() << ": NOTE: duplicate specification of writer type \"" << tag << "\" ignored" << endl;
                } else {
                    requestedWriterTags.insert(tag);
                }
                continue;
            }
        } else if (arg == "-t" || arg == "--transform") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string transform = args[++i].toStdString();
                if (requestedTransformFiles.find(transform) !=
                    requestedTransformFiles.end()) {
                    cerr << myname.toStdString() << ": NOTE: duplicate specification of transform file \"" << transform << "\" ignored" << endl;
                } else {
                    requestedTransformFiles.insert(transform);
                }
                continue;
            }
        } else if (arg == "-T" || arg == "--transforms") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string transform = args[++i].toStdString();
                if (requestedTransformListFiles.find(transform) !=
                    requestedTransformListFiles.end()) {
                    cerr << myname.toStdString() << ": NOTE: duplicate specification of transform list file \"" << transform << "\" ignored" << endl;
                } else {
                    requestedTransformListFiles.insert(transform);
                }
                continue;
            }
        } else if (arg == "-d" || arg == "--default") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string deft = args[++i].toStdString();
                if (requestedDefaultTransforms.find(deft) !=
                    requestedDefaultTransforms.end()) {
                    cerr << myname.toStdString() << ": NOTE: duplicate specification of default transform \"" << deft << "\" ignored" << endl;
                } else {
                    requestedDefaultTransforms.insert(deft);
                }
                continue;
            }
        } else if (arg == "-S" || arg == "--summary") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string summary = args[++i].toStdString();
                requestedSummaryTypes.insert(summary);
                continue;
            }
        } else if (arg == "--summary-only") {
            summaryOnly = true;
            continue;
        } else if (arg == "--segments") {
            if (last) {
                cerr << myname.toStdString() << ": argument expected for \""
                     << arg.toStdString() << "\" option" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                string segmentSpec = args[++i].toStdString();
                QStringList segmentStrs = QString(segmentSpec.c_str()).split(',');
                for (int j = 0; j < segmentStrs.size(); ++j) {
                    bool good = false;
                    boundaries.insert(Vamp::RealTime::fromSeconds
                                      (segmentStrs[j].toDouble(&good)));
                    if (!good) {
                        cerr << myname.toStdString() << ": segment boundaries must be numeric" << endl;
                        cerr << helpStr.toStdString() << endl;
                        exit(2);
                    }
                }
            }
/*!!!
        } else if (arg == "-m" || arg == "--multiplex") {
            multiplex = true;
            cerr << myname.toStdString()
                 << ": WARNING: Multiplex argument not yet implemented" << endl; //!!!
            continue;
*/
        } else if (arg == "-r" || arg == "--recursive") {
            recursive = true;
            continue;
        } else if (arg == "-f" || arg == "--force") {
            force = true;
            continue;
        } else if (arg == "-l" || arg == "--list") {
            list = true;
            continue;
        } else if (arg == "-s" || arg == "--skeleton") {
            if (last || args[i+1].startsWith("-")) {
                cerr << myname.toStdString() << ": usage: "
                     << myname.toStdString() << " " << arg.toStdString()
                     << " <transform>" << endl;
                cerr << helpStr.toStdString() << endl;
                exit(2);
            } else {
                skeletonFor = args[++i];
                continue;
            }
        } else {
            otherArgs.push_back(args[i]);
        }
    }

    if (list) {
        if (!requestedWriterTags.empty() || skeletonFor != "") {
            cerr << helpStr.toStdString() << endl;
            exit(2);
        }
        listTransforms();
        exit(0);
    }
    if (skeletonFor != "") {
        if (!requestedWriterTags.empty()) {
            cerr << helpStr.toStdString() << endl;
            exit(2);
        }
        printSkeleton(skeletonFor);
        exit(0);
    }

    if (requestedTransformFiles.empty() &&
        requestedTransformListFiles.empty() &&
        requestedDefaultTransforms.empty()) {
        cerr << myname.toStdString()
             << ": no transform(s) specified" << endl;
        cerr << helpStr.toStdString() << endl;
        exit(2);
    }

    if (requestedWriterTags.empty()) {
        cerr << myname.toStdString()
             << ": no writer(s) specified" << endl;
        cerr << helpStr.toStdString() << endl;
        exit(2);
    }

    if (!boundaries.empty()) {
        if (requestedSummaryTypes.empty()) {
            cerr << myname.toStdString()
                 << ": summary segment boundaries provided, but no summary type specified"
                 << endl;
            cerr << helpStr.toStdString() << endl;
            exit(2);
        }
    }

    QSettings settings;

#ifdef HAVE_FFTW3
    settings.beginGroup("FFTWisdom");
    QString wisdom = settings.value("wisdom").toString();
    if (wisdom != "") {
        fftw_import_wisdom_from_string(wisdom.toLocal8Bit().data());
    }
    settings.endGroup();
#endif

    settings.beginGroup("RDF");
    if (!settings.contains("rdf-indices")) {
        QStringList list;
        list << "http://www.vamp-plugins.org/rdf/plugins/index.txt";
        settings.setValue("rdf-indices", list);
    }
    settings.endGroup();

    FeatureExtractionManager manager;

    if (!requestedSummaryTypes.empty()) {
        if (!manager.setSummaryTypes(requestedSummaryTypes,
                                     summaryOnly,
                                     boundaries)) {
            cerr << myname.toStdString()
                 << ": failed to set requested summary types" << endl;
            exit(1);
        }
    }
    
    vector<FeatureWriter *> writers;

    for (set<string>::const_iterator i = requestedWriterTags.begin();
         i != requestedWriterTags.end(); ++i) {

        FeatureWriter *writer = FeatureWriterFactory::createWriter(*i);

        if (!writer) {
            cerr << myname.toStdString() << ": unknown feature writer \""
                 << *i << "\"" << endl;
            cerr << helpStr.toStdString() << endl;
            exit(2);
        }

        map<string, string> writerArgs;
        FeatureWriter::ParameterList pl(writer->getSupportedParameters());

        for (int k = 0; k < pl.size(); ++k) {
            
            string argbase = pl[k].name;
            QString literal = QString("--%1-%2")
                .arg(i->c_str()).arg(argbase.c_str());
            
            for (int j = 0; j < otherArgs.size(); ) {
                
                if (otherArgs[j] != literal) {
                    ++j;
                    continue;
                }
                    
                otherArgs.removeAt(j);
                    
                if (pl[k].hasArg) {
                    if (j < otherArgs.size()) {
                        writerArgs[argbase] = otherArgs[j].toStdString();
                        otherArgs.removeAt(j);
                    } else {
                        cerr << myname.toStdString() << ": "
                             << "argument required for \""
                             << literal.toStdString() << "\" option"
                             << endl;
                        cerr << helpStr.toStdString() << endl;
                        exit(2);
                    }
                } else {
                    writerArgs[argbase] = "";
                }
            }
        }
        
        writer->setParameters(writerArgs);
        
        writers.push_back(writer);
    }

    for (int i = 0; i < otherArgs.size(); ++i) {
        if (otherArgs[i].startsWith("-")) {
            cerr << myname.toStdString() << ": unknown option \""
                 << otherArgs[i].toStdString() << "\"" << endl;
            cerr << helpStr.toStdString() << endl;
            exit(2);
        }
    }

    if (otherArgs.empty()) {
        cerr << myname.toStdString() << ": no input(s) specified" << endl;
        cerr << helpStr.toStdString() << endl;
        exit(2);
    }    

    for (set<string>::const_iterator i = requestedTransformListFiles.begin();
         i != requestedTransformListFiles.end(); ++i) {
        PlaylistFileReader reader(i->c_str());
        if (reader.isOK()) {
            vector<QString> files = reader.load();
            for (int j = 0; j < files.size(); ++j) {
                requestedTransformFiles.insert(files[j].toStdString());
            }
        } else {
            cerr << myname.toStdString() << ": failed to read template list file \"" << *i << "\"" << endl;
            exit(2);
        }
    }

    QStringList sources;
    if (!recursive) {
        sources = otherArgs;
    } else {
        for (QStringList::const_iterator i = otherArgs.begin();
             i != otherArgs.end(); ++i) {
            if (QDir(*i).exists()) {
                cerr << "Directory found and recursive flag set, scanning for audio files..." << endl;
                int found = 0;
                findSourcesRecursive(*i, sources, found);
                cerr << "\rDone, found " << found << " supported audio file(s)                    " << endl;
            } else {
                sources.push_back(*i);
            }
        }
    }

    bool good = true;
    QSet<QString> badSources;

    for (QStringList::const_iterator i = sources.begin();
         i != sources.end(); ++i) {
        try {
            manager.addSource(*i);
        } catch (const std::exception &e) {
            badSources.insert(*i);
            cerr << "ERROR: Failed to process file \"" << i->toStdString()
                 << "\": " << e.what() << endl;
            if (force) {
                // print a note only if we have more files to process
                QStringList::const_iterator j = i;
                if (++j != sources.end()) {
                    cerr << "NOTE: \"--force\" option was provided, continuing (more errors may occur)" << endl;
                }
            } else {
                cerr << "NOTE: If you want to continue with processing any further files after an" << endl
                     << "error like this, use the --force option" << endl;
                good = false;
                break;
            }
        }
    }

    if (good) {
    
        bool haveFeatureExtractor = false;
    
        for (set<string>::const_iterator i = requestedTransformFiles.begin();
             i != requestedTransformFiles.end(); ++i) {
            if (manager.addFeatureExtractorFromFile(i->c_str(), writers)) {
                haveFeatureExtractor = true;
            }
        }

        for (set<string>::const_iterator i = requestedDefaultTransforms.begin();
             i != requestedDefaultTransforms.end(); ++i) {
            if (manager.addDefaultFeatureExtractor(i->c_str(), writers)) {
                haveFeatureExtractor = true;
            }
        }

        if (!haveFeatureExtractor) {
            cerr << myname.toStdString() << ": no feature extractors added" << endl;
            good = false;
        }
    }

    if (good) {
        for (QStringList::const_iterator i = sources.begin();
             i != sources.end(); ++i) {
            if (badSources.contains(*i)) continue;
            std::cerr << "Extracting features for: \"" << i->toStdString() << "\"" << std::endl;
            try {
                manager.extractFeatures(*i, force);
            } catch (const std::exception &e) {
                cerr << "ERROR: Feature extraction failed for \"" << i->toStdString()
                     << "\": " << e.what() << endl;
                if (force) {
                    // print a note only if we have more files to process
                    QStringList::const_iterator j = i;
                    if (++j != sources.end()) {
                        cerr << "NOTE: \"--force\" option was provided, continuing (more errors may occur)" << endl;
                    }
                } else {
                    cerr << "NOTE: If you want to continue with processing any further files after an" << endl
                         << "error like this, use the --force option" << endl;
                    good = false;
                    break;
                }
            }
        }
    }
    
    for (int i = 0; i < writers.size(); ++i) delete writers[i];

#ifdef HAVE_FFTW3
    settings.beginGroup("FFTWisdom");
    char *cwisdom = fftw_export_wisdom_to_string();
    if (cwisdom) {
        settings.setValue("wisdom", cwisdom);
        fftw_free(cwisdom);
    }
    settings.endGroup();
#endif

    TempDirectory::getInstance()->cleanup();
    
    if (good) return 0;
    else return 1;
}