There already was a control interface for the viewfinder settings but no real public C++ API and a partial QML API. This patch adds a new C++ API and improves the QML API. Supported viewfinder settings are resolution, minimumFrameRate, maximumFrameRate and pixelFormat. The camera can be queried for the supported values for each of these settings. A new control interface was created to match the new API. Change-Id: I289fea038fe46277a5516c956a64280da09ed985 Reviewed-by: Andrew den Exter <andrew.den.exter@qinetic.com.au>
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