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FIX input file with rescaling (multilayer scalable) when using "SourceScalingRatioHor/Ver" encoder option

Fabrice URBAN requested to merge (removed):fix_source_rescaling_for_multilayer into master
  • added rescaling in MCTF using EncAppCfg::m_sourceWidth(Height)BeforeScale values
  • fixed frame padding / EncAppCfg::m_confWinxxx not scaled by SPS::getWinUnitX() Note that rescaling is done with internal bit depth precision. For example, if the source is 8-bits and internal precision in 10-bits, rescaling (down-sampling) is 10-bits and picture won't be down-converted to 8-bits. This may result in differences compared to using an externally down-sampled 8-bits input file.
Edited by Fabrice URBAN

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