view data/fileio/CSVFileReader.h @ 335:02d2ad95ea52 spectrogram-cache-rejig

* Get storage advice for each cache in an FFT data server.  Allows us to be
  more confident about the actual memory situation and cut over from memory
  to disc part way through an FFT calculation if necessary.  StorageAdviser
  is now a bit too optimistic though (it's too keen to allocate large numbers
  of small blocks in memory).

/* -*- 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.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    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 _CSV_FILE_READER_H_
#define _CSV_FILE_READER_H_

#include "DataFileReader.h"

#include <QList>
#include <QStringList>
#include <QDialog>

class QFile;
class QTableWidget;
class QComboBox;
class QLabel;


class CSVFileReader : public DataFileReader
{
public:
    CSVFileReader(QString path, size_t mainModelSampleRate);
    virtual ~CSVFileReader();

    virtual bool isOK() const;
    virtual QString getError() const;
    virtual Model *load() const;

protected:
    QFile *m_file;
    QString m_error;
    size_t m_mainModelSampleRate;
};


class CSVFormatDialog : public QDialog
{
    Q_OBJECT
    
public:
    CSVFormatDialog(QWidget *parent, QFile *file, size_t defaultSampleRate);
    
    ~CSVFormatDialog();
    
    enum ModelType {
	OneDimensionalModel,
	TwoDimensionalModel,
	ThreeDimensionalModel
    };
    
    enum TimingType {
	ExplicitTiming,
	ImplicitTiming
    };
    
    enum TimeUnits {
	TimeSeconds,
	TimeAudioFrames,
	TimeWindows
    };

    ModelType  getModelType()   const { return m_modelType;   }
    TimingType getTimingType()  const { return m_timingType;  }
    TimeUnits  getTimeUnits()   const { return m_timeUnits;   }
    QString    getSeparator()   const { return m_separator;   }
    size_t     getSampleRate()  const { return m_sampleRate;  }
    size_t     getWindowSize()  const { return m_windowSize;  }

protected slots:
    void modelTypeChanged(int type);
    void timingTypeChanged(int type);
    void sampleRateChanged(QString);
    void windowSizeChanged(QString);

protected:
    ModelType  m_modelType;
    TimingType m_timingType;
    TimeUnits  m_timeUnits;
    QString    m_separator;
    size_t     m_sampleRate;
    size_t     m_windowSize;
    
    QList<QStringList> m_example;
    int m_maxExampleCols;
    QTableWidget *m_exampleWidget;
    
    QComboBox *m_modelTypeCombo;
    QComboBox *m_timingTypeCombo;
    QLabel *m_sampleRateLabel;
    QComboBox *m_sampleRateCombo;
    QLabel *m_windowSizeLabel;
    QComboBox *m_windowSizeCombo;

    bool guessFormat(QFile *file);
    void populateExample();
};

#endif