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2024-07-05libtuning: lsc: Prevent negative valuesStefan Klug
In cases where the calibration image contains super dark areas, or when an invalid blacklevel was supplied, the grid might get close to zero or negative. This would have bad effects on the 1/grid later. So clamp the values to a small positive number. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2024-07-05libtuning: lsc: rkisp1: Do not calculate ratios to greenStefan Klug
The current LSC algorithm for the rkisp1 just forwards the LSC tables to the hardware, so absolute factors are needed and not ratios compared to green. Therefore every channel needs to be calculated independently. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2024-07-05libtuning: Handle cases, where no lsc tuning images are presentStefan Klug
Make it clear that no lsc calibration was done by returning None instead of a incomplete configuration. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2024-07-05libtuning: lsc: rkisp1: Clip lsc values to valid rangeStefan Klug
Based on the input images, the lsc values could exceed the range allowed by the rkisp1. As we are now clipping the values, we can simplify the value mapping. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2024-07-05libtuning: Migrate prints to python logging frameworkStefan Klug
In ctt_ccm.py the logging functionality of the Cam object was used. As we don't want to port over that class, it needs to be replaced anyways. While at it, also replace the eprint function as it doesn't add any value over the logging framework and misses the ability for easy log formatting. For nice output formatting add the coloredlogs library. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
2024-05-08libcamera: Drop file name from header comment blocksLaurent Pinchart
Source files in libcamera start by a comment block header, which includes the file name and a one-line description of the file contents. While the latter is useful to get a quick overview of the file contents at a glance, the former is mostly a source of inconvenience. The name in the comments can easily get out of sync with the file name when files are renamed, and copy & paste during development have often lead to incorrect names being used to start with. Readers of the source code are expected to know which file they're looking it. Drop the file name from the header comment block. The change was generated with the following script: ---------------------------------------- dirs="include/libcamera src test utils" declare -rA patterns=( ['c']=' \* ' ['cpp']=' \* ' ['h']=' \* ' ['py']='# ' ['sh']='# ' ) for ext in ${!patterns[@]} ; do files=$(for dir in $dirs ; do find $dir -name "*.${ext}" ; done) pattern=${patterns[${ext}]} for file in $files ; do name=$(basename ${file}) sed -i "s/^\(${pattern}\)${name} - /\1/" "$file" done done ---------------------------------------- This misses several files that are out of sync with the comment block header. Those will be addressed separately and manually. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
2022-11-25utils: libtuning: modules: alsc: Add rkisp1 LSC modulePaul Elder
Add an LSC module for RkISP1. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-11-25utils: libtuning: modules: alsc: Add raspberrypi ALSC modulePaul Elder
Add an ALSC module for Raspberry Pi. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-11-25utils: libtuning: modules: Add base LSC modulePaul Elder
Add a base LSC module to libtuning's collection of modules. It is based on raspberrypi's ctt's ALSC, but customizable for different lens shading table sizes, among other things. It alone is insufficient as a module, but it provides utilities that are useful for and which will simplify implementing LSC modules. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>