PxMEncoder::PxMEncoder()
{
    m_description = "Portable image format (*.pbm;*.pgm;*.ppm;*.pxm;*.pnm)";
    m_buf_supported = true;
}
PxMEncoder::PxMEncoder()
{
    m_description = "Portable image format (*.pbm;*.pgm;*.ppm;*.pxm;*.pnm)";
    m_buf_supported = true;
}