PAR to SAR Helper Function

[ht techdev]

Hi

Need to generate proper SAR values for an HEVC encoder, as per
T-REC-H.265-201504, i.e. the following:



 

Initially, I directly mapped GST_VIDEO_INFO_PAR_N(&info) and
GST_VIDEO_INFO_PAR_D(&info), for these values. However, it seems that
regardless of frame's width and height, I always get 1:1. 

I am wondering if there some existing conversion function, in gstreamer
1.4.5,  that may be able to the above conversion.

Cheers,

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