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#include "track/bpm.h"
namespace mixxx {
/*static*/ constexpr double Bpm::kValueUndefined;
/*static*/ constexpr double Bpm::kValueMin;
double Bpm::valueFromString(const QString& str, bool* pValid) {
if (pValid) {
*pValid = false;
}
if (str.trimmed().isEmpty()) {
return kValueUndefined;
}
bool valueValid = false;
double value = str.toDouble(&valueValid);
if (valueValid) {
if (kValueUndefined == value) {
// special case
if (pValid) {
*pValid = true;
}
return value;
}
if (isValidValue(value)) {
if (pValid) {
*pValid = true;
}
return value;
} else {
qDebug() << "Invalid BPM value:" << str << "->" << value;
}
} else {
qDebug() << "Failed to parse BPM:" << str;
}
return kValueUndefined;
}
QString Bpm::valueToString(double value) {
if (isValidValue(value)) {
//TODO: Shouldn't this be formatted in some way, instead of letting it output in scientific notation?
return QString::number(value);
} else {
return QString();
}
}
double Bpm::normalizeValue(double value) {
if (isValidValue(value)) {
const double normalizedValue = valueFromString(valueToString(value));
// NOTE(uklotzde): Subsequently formatting and parsing the
// normalized value should not alter it anymore!
DEBUG_ASSERT(normalizedValue == valueFromString(valueToString(normalizedValue)));
return normalizedValue;
} else {
return value;
}
}
} // namespace mixxx
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