From 668cefa7e601f345ac34d90cd6c0bf908ab4f825 Mon Sep 17 00:00:00 2001 From: David Plowman Date: Tue, 28 Apr 2020 09:11:40 +0100 Subject: libcamera: controls: Add sensor black levels reporting through metadata The black levels will be used when saving RAW data in DNG containers. Four values are reported, one for each channel, in the order R, Gr, Gb and B. The values are reported as being out of a 16-bit pixel range (a fully saturated pixel would be 65535), so may need subsequent re-scaling, depending on use. Signed-off-by: David Plowman Signed-off-by: Naushir Patuck Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- src/libcamera/control_ids.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'src/libcamera/control_ids.yaml') diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml index b419f8a7..77ebc3f9 100644 --- a/src/libcamera/control_ids.yaml +++ b/src/libcamera/control_ids.yaml @@ -230,4 +230,13 @@ controls: Specify a fixed saturation parameter. Normal saturation is given by the value 1.0; larger values produce more saturated colours; 0.0 produces a greyscale image. + + - SensorBlackLevels: + type: int32_t + description: | + Reports the sensor black levels used for processing a frame, in the + order R, Gr, Gb, B. These values are returned as numbers out of a 16-bit + pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels + control can only be returned in metadata. + size: [4] ... -- cgit v1.2.1