what is idea of queryFormat()

[AndreiCherniaev]

libv4l2cpp/src/V4l2Device.cpp

Line 59 in fac4b83

void V4l2Device::queryFormat()

function configureFormat() calls to get current configuration. But I want to say it is not current but it is old configuration. For example I use application qv4l2, set in this application some not good settings and close it. Library libv4l2cpp do first of all read this settings e.g. incorrect m_bufferSize. I want to say more. libv4l2cpp will use not correct m_bufferSize from another application. What is reason to do it?