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| author | Sylwester Nawrocki <sylvester.nawrocki@gmail.com> | 2013-01-19 15:51:55 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-02-05 15:04:06 -0200 |
| commit | 2ccbe779bcdee130ea7f1525670dc9d60318a981 (patch) | |
| tree | f667acca6ab42a0565b062616b3a6f176508e874 /include/uapi | |
| parent | af9bb33aa33d4beb5d0ac505d48530a56856f66c (diff) | |
| download | linux-2ccbe779bcdee130ea7f1525670dc9d60318a981.tar.gz linux-2ccbe779bcdee130ea7f1525670dc9d60318a981.tar.bz2 linux-2ccbe779bcdee130ea7f1525670dc9d60318a981.zip | |
[media] v4l2-ctrl: Add helper function for the controls range update
This patch adds a helper function that allows to modify range,
i.e. minimum, maximum, step and default value of a v4l2 control,
after the control has been created and initialized. This is helpful
in situations when range of a control depends on user configurable
parameters, e.g. camera sensor absolute exposure time depending on
an output image resolution and frame rate.
v4l2_ctrl_modify_range() function allows to modify range of an
INTEGER, BOOL, MENU, INTEGER_MENU and BITMASK type controls.
Based on a patch from Hans Verkuil http://patchwork.linuxtv.org/patch/8654.
Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/videodev2.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 94cbe26e9f00..928799c2e2d9 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1822,6 +1822,7 @@ struct v4l2_event_vsync { /* Payload for V4L2_EVENT_CTRL */ #define V4L2_EVENT_CTRL_CH_VALUE (1 << 0) #define V4L2_EVENT_CTRL_CH_FLAGS (1 << 1) +#define V4L2_EVENT_CTRL_CH_RANGE (1 << 2) struct v4l2_event_ctrl { __u32 changes; |