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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-08-08 05:41:13 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-08-26 15:42:09 +0300
commit3fad116f89e0d3497567043cbf6d8c49f1c102db (patch)
tree230c7d4d2231d2fbd908814b55f7441844d8b740 /test/mapped-buffer.cpp
parent951522c1795485d122fb317ef6fe7f25a853008f (diff)
utils: rkisp1: Add script to generate CSC coefficients
This script generates fixed-point integer coefficients for the YCbCr encoding 3x3 matrix. The encoding, quantization and fixed-point precision can be selected through command line arguments. The main purpose of the script is to generate coefficient tables to extend the rkisp1 driver with support for additional YCbCr encodings, but it may be useful for other purposes as well given that the rounding isn't trivial. The Rec. 601 full and limited range coefficients have been verified to match the values currently used by the rkisp1 driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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