[libcamera-devel] [PATCH v6 1/6] libcamera: Add ScalerCrop control

[David Plowman]

The ScalerCrop control selects how much of the sensor's active pixel
area will be scaled to form the final output image. It can be used to
implement digital zoom.

Signed-off-by: David Plowman <david.plowman at raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 src/libcamera/control_ids.yaml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml
index 4c415545..b4f76570 100644
--- a/src/libcamera/control_ids.yaml
+++ b/src/libcamera/control_ids.yaml
@@ -284,4 +284,17 @@ controls:
         order in an array of 9 floating point values.
 
       size: [3x3]
+
+  - ScalerCrop:
+      type: Rectangle
+      description: |
+        Sets the image portion that will be scaled to form the whole of
+        the final output image. The (x,y) location of this rectangle is
+        relative to the PixelArrayActiveArea that is being used. The units
+        remain native sensor pixels, even if the sensor is being used in
+        a binning or skipping mode.
+
+        This control is only present when the pipeline supports scaling. Its
+        maximum valid value is given by the properties::ScalerCropMaximum
+        property, and the two can be used to implement digital zoom.
 ...
-- 
2.20.1