From 9889a1223028a14ac2fd56323fc813b62087c918 Mon Sep 17 00:00:00 2001 From: Paul Elder Date: Tue, 28 Aug 2018 02:10:01 -0400 Subject: v4l2: add v4l2_set_frame_rate We would like to be able to set the frame rate of video sources. This patch adds such a function for v4l2-based video sources to use. Signed-off-by: Paul Elder Reviewed-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- lib/v4l2.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'lib/v4l2.h') diff --git a/lib/v4l2.h b/lib/v4l2.h index 8d7b3c5..7bacf5d 100644 --- a/lib/v4l2.h +++ b/lib/v4l2.h @@ -31,6 +31,7 @@ struct v4l2_device struct list_entry formats; struct v4l2_pix_format format; struct v4l2_rect crop; + unsigned int fps; struct video_buffer_set buffers; }; @@ -85,6 +86,19 @@ int v4l2_get_format(struct v4l2_device *dev, struct v4l2_pix_format *format); */ int v4l2_set_format(struct v4l2_device *dev, struct v4l2_pix_format *format); +/* + * v4l2_set_frame_rate - Set the frame rate + * @dev: Device instance + * @fps: Frame rate + * + * Set the frame rate specified by @fps. + * The device can modify the requested format and size, in which case @dev->fps + * will be updated to reflect the modified setting. + * + * Return 0 on success or a negative error code on failure. + */ +int v4l2_set_frame_rate(struct v4l2_device *dev, unsigned int fps); + /* * v4l2_get_crop - Retrieve the current crop rectangle * @dev: Device instance -- cgit v1.2.3