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[media] v4l2-ctrls: Add v4l2_ctrl_[gs]_ctrl_int64()

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These helper functions get and set a 64-bit control's value from within
a driver. They are similar to v4l2_ctrl_[gs]_ctrl() but operate on
64-bit integer controls instead of 32-bit controls.

Signed-off-by: Laurent Pinchart <[email protected]>
Acked-by: Hans Verkuil <[email protected]>
Acked-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Laurent Pinchart 2012-07-23 09:15:21 -03:00 • committed by Mauro Carvalho Chehab
commit 03d5285b8b
2 changed files with 105 additions and 53 deletions
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23
include/media/v4l2-ctrls.h
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@ -511,6 +511,29 @@ s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl);
*/
int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val);
/** v4l2_ctrl_g_ctrl_int64() - Helper function to get a 64-bit control's value from within a driver.
* @ctrl: The control.
*
* This returns the control's value safely by going through the control
* framework. This function will lock the control's handler, so it cannot be
* used from within the &v4l2_ctrl_ops functions.
*
* This function is for 64-bit integer type controls only.
*/
s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl);
/** v4l2_ctrl_s_ctrl_int64() - Helper function to set a 64-bit control's value from within a driver.
* @ctrl: The control.
* @val: The new value.
*
* This set the control's new value safely by going through the control
* framework. This function will lock the control's handler, so it cannot be
* used from within the &v4l2_ctrl_ops functions.
*
* This function is for 64-bit integer type controls only.
*/
int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val);
/* Internal helper functions that deal with control events. */
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);