void OptionWidget::settingsChanged(int value)
{
Q_UNUSED(value);
if (!m_dontUpdate)
{
m_dontUpdate = true;
int nbChannel = channelsComboBox->currentIndex()+1;
m_logger->debug("nb channel used: " + QString::number(nbChannel) + ", nb bits: " + QString::number(nbBits()));
double quality = (1 - ((pow(2, nbBits()) * nbChannel) / 256.0)) * 100.0;
pourcentLabel->setText(QString::number(quality) + "%");
m_logger->debug("computed quality: " + QString::number(quality));
if (quality > 95)
qualityComboBox->setCurrentIndex(2); // high
else if (quality > 85)
qualityComboBox->setCurrentIndex(1); // normal
else
qualityComboBox->setCurrentIndex(0); // low
emit optionHasChanged();
m_dontUpdate = false;
}
}
//! Export module configuration
QMap<QString, QString> OptionWidget::exportConfiguration()
{
QMap<QString, QString> map;
map["nb_bits"] = QString::number(nbBits());
map["channels"] = QString::number(channels());
map["header"] = QString::number(headerComboBox->currentIndex());
map["distribution"] = QString::number(distributionComboBox->currentIndex());
return map;
}
std::string HuffmanCode::bitArrayString( )const
{
std::string s;
for(size_t i=0; i<nbBits(); i++)
{
s += (bit(i) == 1 ? "1" : "0");
}
return s;
}
///////////////////////////////////////////////////////////////////////////////
// Writes the code for this current node, that represents a symbol
//
// writes: [symbol] [nb bits] [count: # of symbol on stream] [ byte array ]
// not that the byte array is padded. For example,
// if the symbol contains 11 bits, 2 bytes will be written.
bool HuffmanCode::writeCode(Stream& out)const
{
bool bOk = true;
out.writeSymbol(symbol()); // Write the 1 byte symbol.
out.writeByte(nbBits()); // Write the 1 byte code bit length.
out.write((uint32_t)leaf()->count()); // Write the count of this bit
if(bOk) bOk &= out.write(byteArray(), (size_t)nbByte());
return bOk;
}
