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libcamera: rpi: Make the controller min frame duration configurable

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The controller min frame duration is used to rate limit how often we
run IPAs. Historically this has been set to 33333us, meaning that the
algorithms effectively skip frames when the camera is running faster
than 30fps.

This patch adds a small amount of plumbing that allows this value to
be set in the Raspberry Pi configuration file. Some applications or
platforms (such as Pi 5) are easily capable of running these more
often, should there be a need to do so.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
David Plowman
2026-01-07 18:14:26 +00:00
committed by Kieran Bingham
parent 71c5c08fcf
commit cc74afcdbd
7 changed files with 47 additions and 15 deletions
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include/libcamera/ipa/raspberrypi.mojom
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@@ -18,6 +18,7 @@ struct SensorConfig {
struct InitParams {
bool lensPresent;
libcamera.IPACameraSensorInfo sensorInfo;
float controllerMinFrameDurationUs;
/* PISP specific */
libcamera.SharedFD fe;
libcamera.SharedFD be;