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author | Rishikesh Donadkar <rishikeshdonadkar@gmail.com> | 2022-09-15 17:17:34 +0530 |
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committer | Umang Jain <umang.jain@ideasonboard.com> | 2022-11-12 00:15:05 +0530 |
commit | ccfe0a1af77c3d13e81a913b25206d6a4a4747e4 (patch) | |
tree | dc11c18a8600afc25946afe2fa2ee93c698755d2 /Documentation/index.rst | |
parent | 872588301fe6badb4b22cd8d16ab094753138b52 (diff) |
gstreamer: Provide framerate support for libcamerasrc
Control the framerate by passing the controls::FrameDurationLimits
during Camera::start(). Framerate in gstreamer is expressed as
GST_TYPE_FRACTION so we maximise on maintaining it as a fraction
throughout and only do arithematic computations as and when required
(to compute frame-duration and vice-versa).
To weed out abritrary framerate as input, place the clamping via the
controls::FrameDurationLimits provided after camera::configure() phase.
This is handled by a helper function
gst_libcamera_clamp_and_set_frameduration().
Set the bound checked framerate (done in the above mentioned helper)
into the caps and pass the ControlList containing the frame-duration
to Camera::start(ctrls).
Signed-off-by: Rishikesh Donadkar <rishikeshdonadkar@gmail.com>
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Tested-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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