| Age | Commit message (Collapse) | Author | |
|---|---|---|---|
| 2022-08-30 | utils: rkisp1: gen-csc-table: Specify coefficients with full precision | Laurent Pinchart | |
| The Rec01, Rec709, Rec2020 and SMTPE 240M standards specify the Cb and Cr coefficients of the RGB to Y'CbCr conversion matrix using a quotient of two values. Use the exact same formulas instead of hardcoding the division results with a lower precision. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Florian Sylvestre <fsylvestre@baylibre.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> | |||
| 2022-08-26 | utils: rkisp1: Add script to generate CSC coefficients | Laurent Pinchart | |
| 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> | |||
 |
index : libcamera/libcamera.git | |
| libcamera official repository | git repository hosting on libcamera.org |
| summaryrefslogtreecommitdiff |