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authorPaul Elder <paul.elder@ideasonboard.com>2018-08-28 02:17:15 -0400
committerPaul Elder <paul.elder@ideasonboard.com>2019-02-06 01:49:31 -0500
commitbde4deb8803026ec69e11cd380d77bf5d33ee623 (patch)
tree779af4610ffc29499b7d4b672c7a5e75c4cadeb2 /include
parent28c16c6dc72f4c41307f1a317860791c595cdcd6 (diff)
stream, uvc: add uvc_stream_set_frame_rate
We would like to be able to set the frame rate of the video source of a stream. This patch adds such a function to set the source's frame rate from the stream. The frame rate is set right after the format is set. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'include')
-rw-r--r--include/uvcgadget/stream.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/uvcgadget/stream.h b/include/uvcgadget/stream.h
index 9ab068f..bc83cfa 100644
--- a/include/uvcgadget/stream.h
+++ b/include/uvcgadget/stream.h
@@ -91,6 +91,19 @@ int uvc_stream_set_format(struct uvc_stream *stream,
const struct v4l2_pix_format *format);
/*
+ * uvc_stream_set_frame_rate - Set the frame rate for the stream
+ * @stream: the UVC stream
+ * @fps: the frame rate in frames per second
+ *
+ * This function is called from the UVC protocol handler to configure the frame
+ * rate for the video source of the @stream. It must not be called directly by
+ * applications.
+ *
+ * Returns 0 on success, or a negative error code on failure.
+ */
+int uvc_stream_set_frame_rate(struct uvc_stream *stream, unsigned int fps);
+
+/*
* uvc_stream_enable - Turn on/off video streaming for the UVC stream
* @stream: the UVC stream
* @enable: 0 to stop the stream, 1 to start it