[libcamera-devel] [PATCH v2 1/3] libcamera: controls: Add frame duration control

[Naushir Patuck]

Add a float array control (controls::FrameDurations) to specify the
minimum and maximum (in that order) frame duration to be used by the
camera sensor.

Signed-off-by: Naushir Patuck <naush at raspberrypi.com>
---
 src/libcamera/control_ids.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml
index 77ebc3f9..42694fc7 100644
--- a/src/libcamera/control_ids.yaml
+++ b/src/libcamera/control_ids.yaml
@@ -239,4 +239,18 @@ controls:
         pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels
         control can only be returned in metadata.
       size: [4]
+
+  - FrameDurations:
+      type: float
+      description: |
+        Specifies the minimum and maximum (in that order) allowable frame
+        duration, in micro-seconds, for the sensor to use. This could also limit
+        the largest exposure times the sensor can use. For example, if a maximum
+        frame duration of 33ms is requested (corresponding to 30 frames per
+        second), the sensor will not be able raise the exposure time above 33ms.
+        Note that the sensor may not always be able to provide the requested
+        frame duration limits depending on its mode configuration.
+
+        \sa ExposureTime
+      size: [2]
 ...
-- 
2.17.1