view widgets/CSVAudioFormatDialog.cpp @ 1551:e79731086b0f

Fixes to NoteLayer, particularly to calculation of vertical scale when model unit is not Hz. To avoid inconsistency we now behave as if the unit is always Hz from the point of view of the external API and display, converting at the point where we obtain values from the events themselves. Also various fixes to editing.

/* -*- 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 2006-2018 Chris Cannam and 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 "CSVAudioFormatDialog.h"

#include "layer/LayerFactory.h"

#include "TextAbbrev.h"

#include <QFrame>
#include <QGridLayout>
#include <QPushButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QTableWidget>
#include <QComboBox>
#include <QLabel>
#include <QDialogButtonBox>

#include <iostream>
#include <cmath>

#include "base/Debug.h"

CSVAudioFormatDialog::CSVAudioFormatDialog(QWidget *parent, CSVFormat format,
                                           int maxDisplayCols) :
    QDialog(parent),
    m_format(format),
    m_maxDisplayCols(maxDisplayCols),
    m_fuzzyColumn(-1)
{
    setModal(true);
    setWindowTitle(tr("Select Audio Data Format"));

    QGridLayout *layout = new QGridLayout;

    int row = 0;

    layout->addWidget
        (new QLabel(tr("Please select the correct data format for this file.")),
         row++, 0, 1, 4);

    QFrame *exampleFrame = new QFrame;
    exampleFrame->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
    exampleFrame->setLineWidth(2);
    QGridLayout *exampleLayout = new QGridLayout;
    exampleLayout->setSpacing(4);
    exampleFrame->setLayout(exampleLayout);

    QPalette palette = exampleFrame->palette();
    palette.setColor(QPalette::Window, palette.color(QPalette::Base));
    exampleFrame->setPalette(palette);

    QFont fp;
    fp.setPointSize(int(floor(fp.pointSize() * 0.9)));
    
    int columns = format.getColumnCount();
    QList<QStringList> example = m_format.getExample();

    for (int i = 0; i < columns; ++i) {

        QComboBox *cpc = new QComboBox;
        m_columnPurposeCombos.push_back(cpc);
        exampleLayout->addWidget(cpc, 0, i);
        connect(cpc, SIGNAL(activated(int)), this, SLOT(columnPurposeChanged(int)));
        
        if (i == m_maxDisplayCols && columns > i + 2) {
            m_fuzzyColumn = i;

            cpc->addItem(tr("<ignore>"));
            cpc->addItem(tr("Audio channels"));
            cpc->setCurrentIndex
                (m_format.getColumnPurpose(i-1) == CSVFormat::ColumnValue ?
                 1 : 0);

            exampleLayout->addWidget
                (new QLabel(tr("(%1 more)").arg(columns - i)), 1, i);
            break;
        }

        cpc->addItem(tr("<ignore>"));
        cpc->addItem(tr("Audio channel"));
        cpc->setCurrentIndex
            (m_format.getColumnPurpose(i) == CSVFormat::ColumnValue ? 1 : 0);
        
        for (int j = 0; j < example.size() && j < 6; ++j) {
            if (i >= example[j].size()) {
                continue;
            }
            QLabel *label = new QLabel;
            label->setTextFormat(Qt::PlainText);
            QString text = TextAbbrev::abbreviate(example[j][i], 35);
            label->setText(text);
            label->setFont(fp);
            label->setPalette(palette);
            label->setIndent(8);
            exampleLayout->addWidget(label, j+1, i);
        }
    }

    layout->addWidget(exampleFrame, row, 0, 1, 4);
    layout->setColumnStretch(3, 10);
    layout->setRowStretch(row++, 10);

    layout->addWidget(new QLabel(tr("Audio sample rate (Hz):")), row, 0);
    
    int sampleRates[] = {
        8000, 11025, 12000, 22050, 24000, 32000,
        44100, 48000, 88200, 96000, 176400, 192000
    };

    m_sampleRateCombo = new QComboBox;
    for (int i = 0; i < int(sizeof(sampleRates) / sizeof(sampleRates[0])); ++i) {
        m_sampleRateCombo->addItem(QString("%1").arg(sampleRates[i]));
        if (sampleRates[i] == m_format.getSampleRate()) {
            m_sampleRateCombo->setCurrentIndex(i);
        }
    }
    m_sampleRateCombo->setEditable(true);

    layout->addWidget(m_sampleRateCombo, row++, 1);
    connect(m_sampleRateCombo, SIGNAL(activated(QString)),
            this, SLOT(sampleRateChanged(QString)));
    connect(m_sampleRateCombo, SIGNAL(editTextChanged(QString)),
            this, SLOT(sampleRateChanged(QString)));
    
    layout->addWidget(new QLabel(tr("Sample values are:")), row, 0);
    
    m_sampleRangeCombo = new QComboBox;
    // NB must be in the same order as the CSVFormat::AudioSampleRange enum
    m_sampleRangeCombo->addItem(tr("Floating-point in range -1 to 1"));
    m_sampleRangeCombo->addItem(tr("8-bit in range 0 to 255"));
    m_sampleRangeCombo->addItem(tr("16-bit in range -32768 to 32767"));
    m_sampleRangeCombo->addItem(tr("Unknown range: normalise on load"));
    m_sampleRangeCombo->setCurrentIndex(int(m_format.getAudioSampleRange()));

    layout->addWidget(m_sampleRangeCombo, row++, 1);
    connect(m_sampleRangeCombo, SIGNAL(activated(int)),
            this, SLOT(sampleRangeChanged(int)));
    
    QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
                                                QDialogButtonBox::Cancel);
    layout->addWidget(bb, row++, 0, 1, 4);
    connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
    connect(bb, SIGNAL(rejected()), this, SLOT(reject()));

    setLayout(layout);

    updateFormatFromDialog();
}

CSVAudioFormatDialog::~CSVAudioFormatDialog()
{
}

CSVFormat
CSVAudioFormatDialog::getFormat() const
{
    return m_format;
}

void
CSVAudioFormatDialog::sampleRateChanged(QString rateString)
{
    bool ok = false;
    int sampleRate = rateString.toInt(&ok);
    if (ok) m_format.setSampleRate(sampleRate);
}

void
CSVAudioFormatDialog::sampleRangeChanged(int range)
{
    m_format.setAudioSampleRange((CSVFormat::AudioSampleRange)range);
}

void
CSVAudioFormatDialog::columnPurposeChanged(int)
{
    updateFormatFromDialog();
}
    
void
CSVAudioFormatDialog::updateFormatFromDialog()
{
    m_format.setModelType(CSVFormat::WaveFileModel);
    m_format.setTimingType(CSVFormat::ImplicitTiming);
    m_format.setTimeUnits(CSVFormat::TimeAudioFrames);
    
    for (int i = 0; i < m_columnPurposeCombos.size(); ++i) {

        QComboBox *thisCombo = m_columnPurposeCombos[i];
        
        CSVFormat::ColumnPurpose purpose = (thisCombo->currentIndex() == 1 ?
                                            CSVFormat::ColumnValue :
                                            CSVFormat::ColumnUnknown);
        
        if (i == m_fuzzyColumn) {
            for (int j = i; j < m_format.getColumnCount(); ++j) {
                m_format.setColumnPurpose(j, purpose);
            }
        } else {
            m_format.setColumnPurpose(i, purpose);
        }
    }
}