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/* -*- 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.
*/
#ifndef _FILE_FEATURE_WRITER_H_
#define _FILE_FEATURE_WRITER_H_
#include <string>
#include <map>
#include <set>
#include "FeatureWriter.h"
using std::string;
using std::map;
using std::set;
using std::pair;
class QTextStream;
class QTextCodec;
class QFile;
class FileFeatureWriter : public FeatureWriter
{
public:
virtual ~FileFeatureWriter();
virtual ParameterList getSupportedParameters() const;
virtual void setParameters(map<string, string> ¶ms);
virtual void testOutputFile(QString trackId, TransformId transformId);
virtual void flush();
virtual void finish();
protected:
enum FileWriteSupport {
SupportOneFilePerTrackTransform = 1,
SupportOneFilePerTrack = 2,
SupportOneFileTotal = 4,
SupportStdOut = 8
};
FileFeatureWriter(int support, QString extension);
QTextStream *getOutputStream(QString, TransformId, QTextCodec *);
typedef pair<QString, TransformId> TrackTransformPair;
typedef map<TrackTransformPair, QString> FileNameMap;
typedef map<TrackTransformPair, QFile *> FileMap;
typedef map<QFile *, QTextStream *> FileStreamMap;
FileMap m_files;
FileNameMap m_filenames;
FileStreamMap m_streams;
QTextStream *m_prevstream;
TrackTransformPair getFilenameKey(QString, TransformId);
// Come up with a suitable output filename for the given track ID -
// transform ID combo. Fail if it already exists, etc.
QString createOutputFilename(QString, TransformId);
// Look up and return the output filename for the given track ID -
// transform ID combo.
QString getOutputFilename(QString, TransformId);
// Look up and return the output file handle for the given track
// ID - transform ID combo. Return 0 if it could not be opened.
QFile *getOutputFile(QString, TransformId);
// subclass can implement this to be called before file is opened for append
virtual void reviewFileForAppending(QString) { }
int m_support;
QString m_extension;
QString m_baseDir;
bool m_manyFiles;
QString m_singleFileName;
bool m_stdout;
bool m_append;
bool m_force;
};
#endif
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