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Diffstat (limited to 'include/media/v4l2-ctrls.h')
-rw-r--r--include/media/v4l2-ctrls.h40
1 files changed, 32 insertions, 8 deletions
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index 11e67562b3a..776605f1cbe 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -25,6 +25,7 @@
#include <linux/videodev2.h>
/* forward references */
+struct file;
struct v4l2_ctrl_handler;
struct v4l2_ctrl_helper;
struct v4l2_ctrl;
@@ -129,7 +130,10 @@ 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;
@@ -164,7 +168,9 @@ struct v4l2_ctrl_ref {
/** struct v4l2_ctrl_handler - The control handler keeps track of all the
* controls: both the controls owned by the handler and those inherited
* from other handlers.
+ * @_lock: Default for "lock".
* @lock: Lock to control access to this handler and its controls.
+ * May be replaced by the user right after init.
* @ctrls: The list of controls owned by this handler.
* @ctrl_refs: The list of control references.
* @cached: The last found control reference. It is common that the same
@@ -175,7 +181,8 @@ struct v4l2_ctrl_ref {
* @error: The error code of the first failed control addition.
*/
struct v4l2_ctrl_handler {
- struct mutex lock;
+ struct mutex _lock;
+ struct mutex *lock;
struct list_head ctrls;
struct list_head ctrl_refs;
struct v4l2_ctrl_ref *cached;
@@ -219,6 +226,7 @@ struct v4l2_ctrl_config {
u32 flags;
u32 menu_skip_mask;
const char * const *qmenu;
+ const s64 *qmenu_int;
unsigned int is_private:1;
};
@@ -343,6 +351,23 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
const struct v4l2_ctrl_ops *ops,
u32 id, s32 max, s32 mask, s32 def);
+/** v4l2_ctrl_new_int_menu() - Create a new standard V4L2 integer menu control.
+ * @hdl: The control handler.
+ * @ops: The control ops.
+ * @id: The control ID.
+ * @max: The control's maximum value.
+ * @def: The control's default value.
+ * @qmenu_int: The control's menu entries.
+ *
+ * Same as v4l2_ctrl_new_std_menu(), but @mask is set to 0 and it additionaly
+ * takes as an argument an array of integers determining the menu items.
+ *
+ * If @id refers to a non-integer-menu control, then this function will return NULL.
+ */
+struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ u32 id, s32 max, s32 def, const s64 *qmenu_int);
+
/** v4l2_ctrl_add_ctrl() - Add a control from another handler to this handler.
* @hdl: The control handler.
* @ctrl: The control to add.
@@ -451,7 +476,7 @@ void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed);
*/
static inline void v4l2_ctrl_lock(struct v4l2_ctrl *ctrl)
{
- mutex_lock(&ctrl->handler->lock);
+ mutex_lock(ctrl->handler->lock);
}
/** v4l2_ctrl_lock() - Helper function to unlock the handler
@@ -460,7 +485,7 @@ static inline void v4l2_ctrl_lock(struct v4l2_ctrl *ctrl)
*/
static inline void v4l2_ctrl_unlock(struct v4l2_ctrl *ctrl)
{
- mutex_unlock(&ctrl->handler->lock);
+ mutex_unlock(ctrl->handler->lock);
}
/** v4l2_ctrl_g_ctrl() - Helper function to get the control's value from within a driver.
@@ -487,10 +512,9 @@ s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl);
int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val);
/* Internal helper functions that deal with control events. */
-void v4l2_ctrl_add_event(struct v4l2_ctrl *ctrl,
- struct v4l2_subscribed_event *sev);
-void v4l2_ctrl_del_event(struct v4l2_ctrl *ctrl,
- struct v4l2_subscribed_event *sev);
+extern const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops;
+void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new);
+void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new);
/* Can be used as a vidioc_log_status function that just dumps all controls
associated with the filehandle. */