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what is idea of queryFormat() #33

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@AndreiCherniaev

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?

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