diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-03-06 14:06:55 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 21:03:47 +0400 |
| commit | d58083c949b3d76aba225be9f303ab5dab585064 (patch) | |
| tree | 3181333e4eacbdcc10743aee341ba6bbbd1adf1e /drivers/media/video | |
| parent | 515f32879a05bdb69f9b3f86f53db4c04b95e845 (diff) | |
| download | linux-d58083c949b3d76aba225be9f303ab5dab585064.tar.xz | |
[media] V4L: Add camera exposure bias control
The camera may in some conditions incorrectly determine the exposure,
and a manual automatic exposure correction may be needed. This patch
adds V4L2_CID_AUTO_EXPOSURE_BIAS control which allows to add some
offset in the automatic exposure control loop, to compensate for
frame under- or over-exposure.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/v4l2-ctrls.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c index fdcb9e21d9d3..5bfef90e88ee 100644 --- a/drivers/media/video/v4l2-ctrls.c +++ b/drivers/media/video/v4l2-ctrls.c @@ -604,6 +604,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_PRIVACY: return "Privacy"; case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute"; case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative"; + case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias"; /* FM Radio Modulator control */ /* Keep the order of the 'case's the same as in videodev2.h! */ @@ -760,6 +761,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_RDS_TX_RADIO_TEXT: *type = V4L2_CTRL_TYPE_STRING; break; + case V4L2_CID_AUTO_EXPOSURE_BIAS: + *type = V4L2_CTRL_TYPE_INTEGER_MENU; + break; case V4L2_CID_USER_CLASS: case V4L2_CID_CAMERA_CLASS: case V4L2_CID_MPEG_CLASS: |