From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- .../media/v4l/ext-ctrls-image-process.rst | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst (limited to 'Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst') diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst new file mode 100644 index 0000000000..b1c2ab2854 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst @@ -0,0 +1,57 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _image-process-controls: + +******************************* +Image Process Control Reference +******************************* + +The Image Process control class is intended for low-level control of +image processing functions. Unlike ``V4L2_CID_IMAGE_SOURCE_CLASS``, the +controls in this class affect processing the image, and do not control +capturing of it. + + +.. _image-process-control-id: + +Image Process Control IDs +========================= + +``V4L2_CID_IMAGE_PROC_CLASS (class)`` + The IMAGE_PROC class descriptor. + +.. _v4l2-cid-link-freq: + +``V4L2_CID_LINK_FREQ (integer menu)`` + The frequency of the data bus (e.g. parallel or CSI-2). + +.. _v4l2-cid-pixel-rate: + +``V4L2_CID_PIXEL_RATE (64-bit integer)`` + Pixel sampling rate in the device's pixel array. This control is + read-only and its unit is pixels / second. + + Some devices use horizontal and vertical balanking to configure the frame + rate. The frame rate can be calculated from the pixel rate, analogue crop + rectangle as well as horizontal and vertical blanking. The pixel rate + control may be present in a different sub-device than the blanking controls + and the analogue crop rectangle configuration. + + The configuration of the frame rate is performed by selecting the desired + horizontal and vertical blanking. The unit of this control is Hz. + +``V4L2_CID_TEST_PATTERN (menu)`` + Some capture/display/sensor devices have the capability to generate + test pattern images. These hardware specific test patterns can be + used to test if a device is working properly. + +``V4L2_CID_DEINTERLACING_MODE (menu)`` + The video deinterlacing mode (such as Bob, Weave, ...). The menu items are + driver specific and are documented in :ref:`uapi-v4l-drivers`. + +``V4L2_CID_DIGITAL_GAIN (integer)`` + Digital gain is the value by which all colour components + are multiplied by. Typically the digital gain applied is the + control value divided by e.g. 0x100, meaning that to get no + digital gain the control value needs to be 0x100. The no-gain + configuration is also typically the default. -- cgit v1.2.3