QString ReplayGain::ratioToString(double ratio) {
if (isValidRatio(ratio)) {
return QString::number(ratio2db(ratio)) + kGainSuffix;
} else {
return QString();
}
}
double ControlLogPotmeterBehavior::valueToParameter(double dValue) {
if (m_dValueRange == 0.0) {
return 0;
}
if (dValue > m_dMaxValue) {
dValue = m_dMaxValue;
} else if (dValue < m_dMinValue) {
dValue = m_dMinValue;
}
double linParameter = (dValue - m_dMinValue) / m_dValueRange;
double dbParameter = ratio2db(linParameter + m_minOffset * (1 - linParameter));
return 1 - (dbParameter / m_minDB);
}
void WNumberDb::setValue(double dValue) {
QString strDb;
if (dValue != 0.0) {
double v = ratio2db(dValue);
strDb = QString::number(v, 'f', m_iNoDigits);
} else {
strDb = "-" + QString(QChar(0x221E));
}
if (m_skinText.contains("%1")) {
setText(m_skinText.arg(strDb));
} else {
setText(m_skinText + strDb + " dB");
}
}
double ControlAudioTaperPotBehavior::valueToParameter(double dValue) {
double dParam = 1.0;
if (dValue <= 0.0) {
return 0;
} else if (dValue < 1.0) {
// db + linear overlay to reach
// m_minDB = 0
// 0 dB = m_neutralParameter
double overlay = m_offset * (1 - dValue);
if (m_minDB) {
dParam = (ratio2db(dValue + overlay) - m_minDB) / m_minDB * m_neutralParameter * -1;
} else {
dParam = dValue * m_neutralParameter;
}
} else if (dValue == 1.0) {
dParam = m_neutralParameter;
} else if (dValue < m_dMaxValue) {
// m_maxDB = 1
// 0 dB = m_neutralParameter
dParam = (ratio2db(dValue) / m_maxDB * (1 - m_neutralParameter)) + m_neutralParameter;
}
//qDebug() << "ControlAudioTaperPotBehavior::valueToParameter" << "value =" << dValue << "dParam =" << dParam;
return dParam;
}