Create a new flag that represent controls which its value needs to be passed to the driver even if it has not changed. They typically represent actions, like triggering a flash or clearing an error flag. So writing to such a control means some action is executed.
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| @@ -1457,6 +1457,7 @@ struct v4l2_querymenu { · 1456 unmodified lines | |||
| 1457 | #define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040 | 1457 | #define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040 |
| 1458 | #define V4L2_CTRL_FLAG_VOLATILE 0x0080 | 1458 | #define V4L2_CTRL_FLAG_VOLATILE 0x0080 |
| 1459 | #define V4L2_CTRL_FLAG_HAS_PAYLOAD 0x0100 | 1459 | #define V4L2_CTRL_FLAG_HAS_PAYLOAD 0x0100 |
| 1460 | #define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE 0x0200 | ||
| 1460 | 1461 | ||
| 1461 | /* Query flags, to be ORed with the control ID */ | 1462 | /* Query flags, to be ORed with the control ID */ |
| 1462 | #define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000 | 1463 | #define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000 |