view transform/CSVFeatureWriter.cpp @ 631:3a5ee4b6c9ad

* Complete the overhaul of CSV file import; now you can pick the purpose for
  each column in the file, and SV should do the rest.  The most significant
  practical improvement here is that we can now handle files in which time
  and duration do not necessarily appear in known columns.

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

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.

    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 "CSVFeatureWriter.h"

#include <iostream>

#include <QRegExp>
#include <QTextStream>

using namespace std;
using namespace Vamp;

CSVFeatureWriter::CSVFeatureWriter() :
    FileFeatureWriter(SupportOneFilePerTrackTransform |
                      SupportOneFileTotal,
                      "csv"),
    m_separator(",")
{
}

CSVFeatureWriter::~CSVFeatureWriter()
{
}

CSVFeatureWriter::ParameterList
CSVFeatureWriter::getSupportedParameters() const
{
    ParameterList pl = FileFeatureWriter::getSupportedParameters();
    Parameter p;
    
    p.name = "separator";
    p.description = "Column separator for output.  Default is \",\" (comma).";
    p.hasArg = true;
    pl.push_back(p);

    return pl;
}

void
CSVFeatureWriter::setParameters(map<string, string> &params)
{
    FileFeatureWriter::setParameters(params);

    cerr << "CSVFeatureWriter::setParameters" << endl;
    for (map<string, string>::iterator i = params.begin();
         i != params.end(); ++i) {
        cerr << i->first << " -> " << i->second << endl;
        if (i->first == "separator") {
            m_separator = i->second.c_str();
        }
    }
}

void
CSVFeatureWriter::write(QString trackId,
                        const Transform &transform,
                        const Plugin::OutputDescriptor& output,
                        const Plugin::FeatureList& features,
                        std::string summaryType)
{
    // Select appropriate output file for our track/transform
    // combination

    QTextStream *sptr = getOutputStream(trackId, transform.getIdentifier());
    if (!sptr) {
        throw FailedToOpenOutputStream(trackId, transform.getIdentifier());
    }

    QTextStream &stream = *sptr;

    for (unsigned int i = 0; i < features.size(); ++i) {

        if (m_stdout || m_singleFileName != "") {
            if (trackId != m_prevPrintedTrackId) {
                stream << "\"" << trackId << "\"" << m_separator;
                m_prevPrintedTrackId = trackId;
            } else {
                stream << m_separator;
            }
        }

        QString timestamp = features[i].timestamp.toString().c_str();
        timestamp.replace(QRegExp("^ +"), "");
        stream << timestamp;

        if (features[i].hasDuration) {
            QString duration = features[i].duration.toString().c_str();
            duration.replace(QRegExp("^ +"), "");
            stream << m_separator << duration;
        }            

        if (summaryType != "") {
            stream << m_separator << summaryType.c_str();
        }

        for (unsigned int j = 0; j < features[i].values.size(); ++j) {
            stream << m_separator << features[i].values[j];
        }

        if (features[i].label != "") {
            stream << m_separator << "\"" << features[i].label.c_str() << "\"";
        }

        stream << "\n";
    }
}