This patch set implements UVC v1.5 region of interest using V4L2 control API. ROI control is consisted two uvc specific controls. 1. A rectangle control with a newly added type V4L2_CTRL_TYPE_RECT. 2. An auto control with type bitmask. V4L2_CTRL_WHICH_MIN/MAX_VAL is added to support the rectangle control. Tested on two different usb cameras using v4l2-compliance, v4l2-ctl and calling ioctls. 1/7 add V4L2_CTRL_TYPE_RECT. 2/7 and 3/7 support compound types in UVC. 4/7 implement ROI in UVC. 5/7 is a cherry-pick for Hans' implementation of V4L2_CTRL_WHICH_MIN/MAX_VAL in v4l2-core. 6/7 support MIN/MAX in UVC. 7/7 document the changes. Changelog since v6: -Add patch 2 and 3 to support compound types properly in UVC and implement ROI on top of them. -Reorder the patches. Changelog since v5: -Add a __uvc_ctrl_get_p_rect_to_user instead of modifying __uvc_ctrl_get. -Support V4L2_CTRL_FLAG_NEXT_COMPOUND correctly. -Fix formats. Changelog since v4: -Cherry-pick the original patch "v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL". -Split patch "media: uvcvideo: implement UVC v1.5 ROI" into two patches. The codes for supporting min/max in uvc are in patch 4/5 now. -Minor fixes. Detailed changelog in patches Changelog since v3: - Reordered/sliced the patches. 1. Add rect type. 2. Add min/max. 3. Add the roi controls (including init to default). 4. Document the roi controls. - Define the roi controls as uvc-specific in uvcvideo.h. - Modified documentation. - Removed the vivid change. Given the controls are now uvc-specific. I'm not sure how valuable it is to add it in vivid. Let me know otherwise. Hans Verkuil (1): v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL Yunke Cao (6): media: v4l2_ctrl: Add V4L2_CTRL_TYPE_RECT media: uvcvideo: add uvc_ctrl_get_fixed for getting default value media: uvcvideo: Add support for compound controls media: uvcvideo: implement UVC v1.5 ROI media: uvcvideo: support V4L2_CTRL_WHICH_MIN/MAX_VAL media: uvcvideo: document UVC v1.5 ROI .../userspace-api/media/drivers/uvcvideo.rst | 61 +++ .../media/v4l/vidioc-g-ext-ctrls.rst | 11 +- .../media/videodev2.h.rst.exceptions | 3 + drivers/media/i2c/imx214.c | 5 +- .../media/platform/qcom/venus/venc_ctrls.c | 4 + drivers/media/usb/uvc/uvc_ctrl.c | 479 ++++++++++++++++-- drivers/media/usb/uvc/uvc_v4l2.c | 20 +- drivers/media/usb/uvc/uvcvideo.h | 14 + drivers/media/v4l2-core/v4l2-ctrls-api.c | 51 +- drivers/media/v4l2-core/v4l2-ctrls-core.c | 155 +++++- drivers/media/v4l2-core/v4l2-ioctl.c | 4 +- include/media/v4l2-ctrls.h | 34 +- include/uapi/linux/usb/video.h | 1 + include/uapi/linux/uvcvideo.h | 13 + include/uapi/linux/v4l2-controls.h | 8 + include/uapi/linux/videodev2.h | 4 + 16 files changed, 788 insertions(+), 79 deletions(-) -- 2.37.0.rc0.161.g10f37bed90-goog
