diff options
| author | Marvin Lin <milkfafa@gmail.com> | 2023-09-22 08:24:04 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-09-27 09:40:02 +0200 |
| commit | 1568583b3977f232e6e7a652fd4be95a11d0ecae (patch) | |
| tree | 52e3baf97b562c5b5a9b726a82b1a9fb0a66310a /include | |
| parent | media: v4l2-ctrls: Add user control base for Nuvoton NPCM controls (diff) | |
| download | linux-1568583b3977f232e6e7a652fd4be95a11d0ecae.tar.xz linux-1568583b3977f232e6e7a652fd4be95a11d0ecae.zip | |
media: uapi: Add controls for NPCM video driver
Create controls for Nuvoton NPCM video driver to support setting
capture mode of Video Capture/Differentiation (VCD) engine and getting
the count of HEXTILE rectangles that is compressed by Encoding
Compression Engine (ECE).
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/npcm-video.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/uapi/linux/npcm-video.h b/include/uapi/linux/npcm-video.h new file mode 100644 index 000000000000..1d39f6f38c96 --- /dev/null +++ b/include/uapi/linux/npcm-video.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * Controls header for NPCM video driver + * + * Copyright (C) 2022 Nuvoton Technologies + */ + +#ifndef _UAPI_LINUX_NPCM_VIDEO_H +#define _UAPI_LINUX_NPCM_VIDEO_H + +#include <linux/v4l2-controls.h> + +/* + * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control + * details. + */ + +/* + * This control is meant to set the mode of NPCM Video Capture/Differentiation + * (VCD) engine. + * + * The VCD engine supports two modes: + * COMPLETE - Capture the next complete frame into memory. + * DIFF - Compare the incoming frame with the frame stored in memory, and + * updates the differentiated frame in memory. + */ +#define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0) + +enum v4l2_npcm_capture_mode { + V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, /* COMPLETE mode */ + V4L2_NPCM_CAPTURE_MODE_DIFF = 1, /* DIFF mode */ +}; + +/* + * This control is meant to get the count of compressed HEXTILE rectangles which + * is relevant to the number of differentiated frames if VCD is in DIFF mode. + * And the count will always be 1 if VCD is in COMPLETE mode. + */ +#define V4L2_CID_NPCM_RECT_COUNT (V4L2_CID_USER_NPCM_BASE + 1) + +#endif /* _UAPI_LINUX_NPCM_VIDEO_H */ |