structv4l2_ctrl_ops{int(*g_volatile_ctrl)(structv4l2_ctrl *ctrl);int(*try_ctrl)(structv4l2_ctrl *ctrl);int(*s_ctrl)(structv4l2_ctrl *ctrl); }; 通常是需要实现s_ctrl: staticintfoo_s_ctrl(structv4l2_ctrl *ctrl){structfoo*state=container_of(ctrl->handler,structfoo, ctrl_handler);switch...
区别在于@min is set to 0 and the @mask value determines which menu items are to be skipped.这个函数适用于从0开始, 步进为1的控制变量.struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, u8 max, u8 def, const s64 *q...
* v4l2_ctrl_new_std_menu() - Allocate and initialize a new standard V4L2 * menu control. * * @hdl: The control handler. 已经初始化的v4l2_ctrl_handler的结构体 * @ops: The control ops. 已经设置好的v4l2_ctrl_ops结构体 * @id: The control ID. 对应的ID通过;ioctl传递的参数,也就是序列...
5)、继续在 vivi_create_instance(i) 函数中分析,继续设置 dev 结构体中的其他一些参数,对 volume,brightness,contrast,saturation 等参数设置的时候,调用了 v4l2_ctrl_new_std 这个函数,以及对 button,int32,menu,bitmask 等参数设置,调用了 v4l2_ctrl_new_custom 这个函数,一看就知道这两个函数是 V4L2 框架所...
display all controls and their menus [VIDIOC_QUERYMENU] -r, --subset=<ctrl>[,<offset>,<size>]+ the subset of the N-dimensional array to get/set for control <ctrl>, for every dimension an (<offset>, <size>) tuple is given.
;dev->button=v4l2_ctrl_new_custom(hdl,&vivi_ctrl_button,NULL);dev->int32=v4l2_ctrl_new_custom(hdl,&vivi_ctrl_int32,NULL);dev->int64=v4l2_ctrl_new_custom(hdl,&vivi_ctrl_int64,NULL);dev->boolean=v4l2_ctrl_new_custom(hdl,&vivi_ctrl_boolean,NULL);dev->menu=v4l2_ctrl_new_custom(hdl...
help-vidout vidout output format options--help-edid edid handling options-k,--concise be more concise if possible.-l,--list-ctrls display all controls and their values [VIDIOC_QUERYCTRL]-L,--list-ctrls-menusdisplayallcontrolsandtheir menus [VIDIOC_QUERYMENU]-r,--subset <ctrl>[,<offset>...
static const struct v4l2_ctrl_ops os08a20_ctrl_ops = { @@ -861,6 +920,10 @@ static int os08a20_init_controls(struct os08a20 *sensor) OS08A20_DEFAULT_LINK_FREQ, os08a20_csi2_link_freqs);ctrls->hdr_mode = v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_HDR_SENSOR_MODE,...
void (*copy)(camera_menu_t*, struct v4l2_querymenu*) = &camera_menu_copy; switch (control->type) { case CAMERA_CTRL_MENU: break; #ifndef CAMERA_OLD_VIDEODEV2_H case CAMERA_CTRL_INTEGER_MENU: copy = &camera_integer_menu_copy; ...
struct v4l2_ctrl *saturation; struct v4l2_ctrl *hue; struct v4l2_ctrl *volume; struct v4l2_ctrl *button; struct v4l2_ctrl *boolean; struct v4l2_ctrl *int32; struct v4l2_ctrl *int64; struct v4l2_ctrl *menu; struct v4l2_ctrl *string; spinlock...