This patch adds support for Region of Interest bmAutoControls.
ROI control is a compound data type:
Control Selector CT_REGION_OF_INTEREST_CONTROL
Mandatory Requests SET_CUR, GET_CUR, GET_MIN, GET_MAX, GET_DEF
wLength 10
Offset Field Size
0 wROI_Top 2
2 wROI_Left 2
4 wROI_Bottom 2
6 wROI_Right 2
8 bmAutoControls 2 (Bitmap)
uvc_control_mapping, however, can handle only s32 data type at the
moment: ->get() returns s32 value, ->set() accepts s32 value; while
v4l2_ctrl maximum/minimum/default_value can hold only s64 values.
Hence ROI control handling is split into two patches:
a) bmAutoControls is handled via uvc_control_mapping as V4L2_CTRL_TYPE_BITMASK
b) ROI rectangle (SET_CUR, GET_CUR, GET_DEF, etc.) handling is implemented
separately, by the means of selection API.
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
drivers/media/usb/uvc/uvc_ctrl.c | 19 +++++++++++++++++++
include/uapi/linux/usb/video.h | 1 +
include/uapi/linux/v4l2-controls.h | 9 +++++++++
3 files changed, 29 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index b3dde98499f4..5502fe540519 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -355,6 +355,15 @@ static const struct uvc_control_info uvc_ctrls[] = {
.flags = UVC_CTRL_FLAG_GET_CUR
| UVC_CTRL_FLAG_AUTO_UPDATE,
},
+ {
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
+ .index = 21,
+ .size = 10,
+ .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR
+ | UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX
+ | UVC_CTRL_FLAG_GET_DEF
+ },
};
static const struct uvc_menu_info power_line_frequency_controls[] = {
@@ -753,6 +762,16 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
.v4l2_type = V4L2_CTRL_TYPE_BOOLEAN,
.data_type = UVC_CTRL_DATA_TYPE_BOOLEAN,
},
+ {
+ .id = V4L2_CID_REGION_OF_INTEREST_AUTO,
+ .name = "Region of Interest (auto)",
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
+ .size = 16,
+ .offset = 64,
+ .v4l2_type = V4L2_CTRL_TYPE_BITMASK,
+ .data_type = UVC_CTRL_DATA_TYPE_BITMASK,
+ },
};
/* ------------------------------------------------------------------------
diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
index bfdae12cdacf..9076a444758a 100644
--- a/include/uapi/linux/usb/video.h
+++ b/include/uapi/linux/usb/video.h
@@ -104,6 +104,7 @@
#define UVC_CT_ROLL_ABSOLUTE_CONTROL 0x0f
#define UVC_CT_ROLL_RELATIVE_CONTROL 0x10
#define UVC_CT_PRIVACY_CONTROL 0x11
+#define UVC_CT_REGION_OF_INTEREST_CONTROL 0x14
/* A.9.5. Processing Unit Control Selectors */
#define UVC_PU_CONTROL_UNDEFINED 0x00
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index d43bec5f1afd..34bdaf484a8b 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -985,6 +985,15 @@ enum v4l2_auto_focus_range {
#define V4L2_CID_PAN_SPEED (V4L2_CID_CAMERA_CLASS_BASE+32)
#define V4L2_CID_TILT_SPEED (V4L2_CID_CAMERA_CLASS_BASE+33)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO (V4L2_CID_CAMERA_CLASS_BASE+34)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_IRIS (1 << 1)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_IMAGE_STABILIXATION (1 << 6)
+#define V4L2_CID_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7)
#define V4L2_CID_CAMERA_ORIENTATION (V4L2_CID_CAMERA_CLASS_BASE+34)
#define V4L2_CAMERA_ORIENTATION_FRONT 0
--
2.31.1.527.g47e6f16901-goog
