Create a new control type called V4L2_CTRL_TYPE_INTEGER_MENU. Integer menu
controls are just like menu controls but the menu items are 64-bit integers
rather than strings.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
---
drivers/media/video/v4l2-ctrls.c | 73 +++++++++++++++++++++++++++++---------
include/linux/videodev2.h | 6 +++-
include/media/v4l2-ctrls.h | 6 +++-
3 files changed, 66 insertions(+), 19 deletions(-)
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index 0f415da..605d4dd 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -804,7 +804,8 @@ static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 change
ev->u.ctrl.value64 = ctrl->cur.val64;
ev->u.ctrl.minimum = ctrl->minimum;
ev->u.ctrl.maximum = ctrl->maximum;
- if (ctrl->type == V4L2_CTRL_TYPE_MENU)
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU
+ || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
ev->u.ctrl.step = 1;
else
ev->u.ctrl.step = ctrl->step;
@@ -1035,10 +1036,13 @@ static int validate_new_int(const struct v4l2_ctrl *ctrl, s32 *pval)
return 0;
case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
if (val < ctrl->minimum || val > ctrl->maximum)
return -ERANGE;
- if (ctrl->qmenu[val][0] == '\0' ||
- (ctrl->menu_skip_mask & (1 << val)))
+ if (ctrl->menu_skip_mask & (1 << val))
+ return -EINVAL;
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
+ ctrl->qmenu[val][0] == '\0')
return -EINVAL;
return 0;
@@ -1295,7 +1299,8 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
const struct v4l2_ctrl_ops *ops,
u32 id, const char *name, enum v4l2_ctrl_type type,
s32 min, s32 max, u32 step, s32 def,
- u32 flags, const char * const *qmenu, void *priv)
+ u32 flags, const char * const *qmenu,
+ const s64 *qmenu_int, void *priv)
{
struct v4l2_ctrl *ctrl;
unsigned sz_extra = 0;
@@ -1308,6 +1313,7 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
(type == V4L2_CTRL_TYPE_INTEGER && step == 0) ||
(type == V4L2_CTRL_TYPE_BITMASK && max == 0) ||
(type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
+ (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL) ||
(type == V4L2_CTRL_TYPE_STRING && max == 0)) {
handler_set_err(hdl, -ERANGE);
return NULL;
@@ -1318,6 +1324,7 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
}
if ((type == V4L2_CTRL_TYPE_INTEGER ||
type == V4L2_CTRL_TYPE_MENU ||
+ type == V4L2_CTRL_TYPE_INTEGER_MENU ||
type == V4L2_CTRL_TYPE_BOOLEAN) &&
(def < min || def > max)) {
handler_set_err(hdl, -ERANGE);
@@ -1352,7 +1359,10 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
ctrl->minimum = min;
ctrl->maximum = max;
ctrl->step = step;
- ctrl->qmenu = qmenu;
+ if (type == V4L2_CTRL_TYPE_MENU)
+ ctrl->qmenu = qmenu;
+ else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
+ ctrl->qmenu_int = qmenu_int;
ctrl->priv = priv;
ctrl->cur.val = ctrl->val = ctrl->default_value = def;
@@ -1379,6 +1389,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
struct v4l2_ctrl *ctrl;
const char *name = cfg->name;
const char * const *qmenu = cfg->qmenu;
+ const s64 *qmenu_int = cfg->qmenu_int;
enum v4l2_ctrl_type type = cfg->type;
u32 flags = cfg->flags;
s32 min = cfg->min;
@@ -1390,18 +1401,24 @@ struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
&def, &flags);
- is_menu = (cfg->type == V4L2_CTRL_TYPE_MENU);
+ is_menu = (cfg->type == V4L2_CTRL_TYPE_MENU ||
+ cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU);
if (is_menu)
WARN_ON(step);
else
WARN_ON(cfg->menu_skip_mask);
- if (is_menu && qmenu == NULL)
+ if (cfg->type == V4L2_CTRL_TYPE_MENU && qmenu == NULL)
qmenu = v4l2_ctrl_get_menu(cfg->id);
+ else if (cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU &&
+ qmenu_int == NULL) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->id, name,
type, min, max,
is_menu ? cfg->menu_skip_mask : step,
- def, flags, qmenu, priv);
+ def, flags, qmenu, qmenu_int, priv);
if (ctrl)
ctrl->is_private = cfg->is_private;
return ctrl;
@@ -1418,12 +1435,13 @@ struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
u32 flags;
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
- if (type == V4L2_CTRL_TYPE_MENU) {
+ if (type == V4L2_CTRL_TYPE_MENU
+ || type == V4L2_CTRL_TYPE_INTEGER_MENU) {
handler_set_err(hdl, -EINVAL);
return NULL;
}
return v4l2_ctrl_new(hdl, ops, id, name, type,
- min, max, step, def, flags, NULL, NULL);
+ min, max, step, def, flags, NULL, NULL, NULL);
}
EXPORT_SYMBOL(v4l2_ctrl_new_std);
@@ -1445,7 +1463,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
return NULL;
}
return v4l2_ctrl_new(hdl, ops, id, name, type,
- 0, max, mask, def, flags, qmenu, NULL);
+ 0, max, mask, def, flags, qmenu, NULL, NULL);
}
EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
@@ -1609,6 +1627,9 @@ static void log_ctrl(const struct v4l2_ctrl *ctrl,
case V4L2_CTRL_TYPE_MENU:
printk(KERN_CONT "%s", ctrl->qmenu[ctrl->cur.val]);
break;
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ printk(KERN_CONT "%lld", ctrl->qmenu_int[ctrl->cur.val]);
+ break;
case V4L2_CTRL_TYPE_BITMASK:
printk(KERN_CONT "0x%08x", ctrl->cur.val);
break;
@@ -1745,7 +1766,8 @@ int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
qc->minimum = ctrl->minimum;
qc->maximum = ctrl->maximum;
qc->default_value = ctrl->default_value;
- if (ctrl->type == V4L2_CTRL_TYPE_MENU)
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU
+ || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
qc->step = 1;
else
qc->step = ctrl->step;
@@ -1775,16 +1797,33 @@ int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
qm->reserved = 0;
/* Sanity checks */
- if (ctrl->qmenu == NULL ||
- i < ctrl->minimum || i > ctrl->maximum)
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_MENU:
+ if (ctrl->qmenu == NULL)
+ return -EINVAL;
+ break;
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ if (ctrl->qmenu_int == NULL)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (i < ctrl->minimum || i > ctrl->maximum)
return -EINVAL;
+
/* Use mask to see if this menu item should be skipped */
if (ctrl->menu_skip_mask & (1 << i))
return -EINVAL;
/* Empty menu items should also be skipped */
- if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
- return -EINVAL;
- strlcpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
+ if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
+ return -EINVAL;
+ strlcpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
+ } else {
+ qm->value = ctrl->qmenu_int[i];
+ }
return 0;
}
EXPORT_SYMBOL(v4l2_querymenu);
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 4b752d5..9633c69 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1094,6 +1094,7 @@ enum v4l2_ctrl_type {
V4L2_CTRL_TYPE_CTRL_CLASS = 6,
V4L2_CTRL_TYPE_STRING = 7,
V4L2_CTRL_TYPE_BITMASK = 8,
+ V4L2_CTRL_TYPE_INTEGER_MENU = 9,
};
/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
@@ -1113,7 +1114,10 @@ struct v4l2_queryctrl {
struct v4l2_querymenu {
__u32 id;
__u32 index;
- __u8 name[32]; /* Whatever */
+ union {
+ __u8 name[32]; /* Whatever */
+ __s64 value;
+ };
__u32 reserved;
};
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index eeb3df6..f7819e7 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -129,7 +129,10 @@ struct v4l2_ctrl {
u32 step;
u32 menu_skip_mask;
};
- const char * const *qmenu;
+ union {
+ const char * const *qmenu;
+ const s64 *qmenu_int;
+ };
unsigned long flags;
union {
s32 val;
@@ -219,6 +222,7 @@ struct v4l2_ctrl_config {
u32 flags;
u32 menu_skip_mask;
const char * const *qmenu;
+ const s64 *qmenu_int;
unsigned int is_private:1;
};
--
1.7.2.5
--
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