From: Yunke Cao <yunkec@google.com>
Implement support for ROI as described in UVC 1.5:
4.2.2.1.20 Digital Region of Interest (ROI) Control
ROI control is implemented using V4L2 control API as
two UVC-specific controls:
V4L2_CID_UVC_REGION_OF_INTEREST_RECT and
V4L2_CID_UVC_REGION_OF_INTEREST_AUTO.
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Yunke Cao <yunkec@google.com>
Reviewed-by: Yunke Cao <yunkec@google.com>
Tested-by: Yunke Cao <yunkec@google.com>
---
drivers/media/usb/uvc/uvc_ctrl.c | 81 ++++++++++++++++++++++++++++++++++++++
drivers/media/usb/uvc/uvcvideo.h | 7 ++++
include/uapi/linux/usb/video.h | 1 +
include/uapi/linux/uvcvideo.h | 13 ++++++
include/uapi/linux/v4l2-controls.h | 7 ++++
5 files changed, 109 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index dd6129becf58..86ea24b10b54 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -358,6 +358,24 @@ static const struct uvc_control_info uvc_ctrls[] = {
.flags = UVC_CTRL_FLAG_GET_CUR
| UVC_CTRL_FLAG_AUTO_UPDATE,
},
+ /*
+ * UVC_CTRL_FLAG_AUTO_UPDATE is needed because the RoI may get updated
+ * by sensors.
+ * "This RoI should be the same as specified in most recent SET_CUR
+ * except in the case where the ‘Auto Detect and Track’ and/or
+ * ‘Image Stabilization’ bit have been set."
+ * 4.2.2.1.20 Digital Region of Interest (ROI) Control
+ */
+ {
+ .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
+ | UVC_CTRL_FLAG_AUTO_UPDATE,
+ },
};
static const u32 uvc_control_classes[] = {
@@ -603,6 +621,44 @@ static const struct uvc_control_mapping *uvc_ctrl_filter_plf_mapping(
return out_mapping;
}
+static int uvc_get_rect(struct uvc_control_mapping *mapping, u8 query,
+ const void *uvc_in, size_t v4l2_size, void *v4l2_out)
+{
+ const struct uvc_rect *uvc_rect = uvc_in;
+ struct v4l2_rect *v4l2_rect = v4l2_out;
+
+ if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
+ return -EINVAL;
+
+ if (uvc_rect->left > uvc_rect->right ||
+ uvc_rect->top > uvc_rect->bottom)
+ return -EIO;
+
+ v4l2_rect->top = uvc_rect->top;
+ v4l2_rect->left = uvc_rect->left;
+ v4l2_rect->height = uvc_rect->bottom - uvc_rect->top + 1;
+ v4l2_rect->width = uvc_rect->right - uvc_rect->left + 1;
+
+ return 0;
+}
+
+static int uvc_set_rect(struct uvc_control_mapping *mapping, size_t v4l2_size,
+ const void *v4l2_in, void *uvc_out)
+{
+ struct uvc_rect *uvc_rect = uvc_out;
+ const struct v4l2_rect *v4l2_rect = v4l2_in;
+
+ if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
+ return -EINVAL;
+
+ uvc_rect->top = min(0xffff, v4l2_rect->top);
+ uvc_rect->left = min(0xffff, v4l2_rect->left);
+ uvc_rect->bottom = min(0xffff, v4l2_rect->top + v4l2_rect->height - 1);
+ uvc_rect->right = min(0xffff, v4l2_rect->left + v4l2_rect->width - 1);
+
+ return 0;
+}
+
static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
{
.id = V4L2_CID_BRIGHTNESS,
@@ -897,6 +953,28 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
.selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
.filter_mapping = uvc_ctrl_filter_plf_mapping,
},
+ {
+ .id = V4L2_CID_UVC_REGION_OF_INTEREST_RECT,
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
+ .size = sizeof(struct uvc_rect) * 8,
+ .offset = 0,
+ .v4l2_type = V4L2_CTRL_TYPE_RECT,
+ .data_type = UVC_CTRL_DATA_TYPE_RECT,
+ .get = uvc_get_rect,
+ .set = uvc_set_rect,
+ .name = "Region Of Interest Rectangle",
+ },
+ {
+ .id = V4L2_CID_UVC_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,
+ .name = "Region Of Interest Auto Controls",
+ },
};
/* ------------------------------------------------------------------------
@@ -1473,6 +1551,9 @@ static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
static size_t uvc_mapping_v4l2_size(struct uvc_control_mapping *mapping)
{
+ if (mapping->v4l2_type == V4L2_CTRL_TYPE_RECT)
+ return sizeof(struct v4l2_rect);
+
if (uvc_ctrl_mapping_is_compound(mapping))
return DIV_ROUND_UP(mapping->size, 8);
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 8aca1a2fe587..17b79108599f 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -538,6 +538,13 @@ struct uvc_device_info {
u16 uvc_version;
};
+struct uvc_rect {
+ u16 top;
+ u16 left;
+ u16 bottom;
+ u16 right;
+} __packed;
+
struct uvc_status_streaming {
u8 button;
} __packed;
diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
index 2ff0e8a3a683..2afb4420e6c4 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/uvcvideo.h b/include/uapi/linux/uvcvideo.h
index f86185456dc5..cbe15bca9569 100644
--- a/include/uapi/linux/uvcvideo.h
+++ b/include/uapi/linux/uvcvideo.h
@@ -16,6 +16,7 @@
#define UVC_CTRL_DATA_TYPE_BOOLEAN 3
#define UVC_CTRL_DATA_TYPE_ENUM 4
#define UVC_CTRL_DATA_TYPE_BITMASK 5
+#define UVC_CTRL_DATA_TYPE_RECT 6
/* Control flags */
#define UVC_CTRL_FLAG_SET_CUR (1 << 0)
@@ -38,6 +39,18 @@
#define UVC_MENU_NAME_LEN 32
+/* V4L2 driver-specific controls */
+#define V4L2_CID_UVC_REGION_OF_INTEREST_RECT (V4L2_CID_USER_UVC_BASE + 1)
+#define V4L2_CID_UVC_REGION_OF_INTEREST_AUTO (V4L2_CID_USER_UVC_BASE + 2)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IRIS (1 << 1)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IMAGE_STABILIZATION (1 << 6)
+#define V4L2_UVC_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7)
+
struct uvc_menu_info {
__u32 value;
__u8 name[UVC_MENU_NAME_LEN];
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 974fd254e573..72e32814ea83 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -215,6 +215,13 @@ enum v4l2_colorfx {
*/
#define V4L2_CID_USER_THP7312_BASE (V4L2_CID_USER_BASE + 0x11c0)
+/*
+ * The base for the uvc driver controls.
+ * See linux/uvcvideo.h for the list of controls.
+ * We reserve 64 controls for this driver.
+ */
+#define V4L2_CID_USER_UVC_BASE (V4L2_CID_USER_BASE + 0x11e0)
+
/* MPEG-class control IDs */
/* The MPEG controls are applicable to all codec controls
* and the 'MPEG' part of the define is historical */
--
2.47.0.338.g60cca15819-goog
p.s.
On 10-Dec-24 10:42 AM, Ricardo Ribalda wrote:
> From: Yunke Cao <yunkec@google.com>
>
> Implement support for ROI as described in UVC 1.5:
> 4.2.2.1.20 Digital Region of Interest (ROI) Control
>
> ROI control is implemented using V4L2 control API as
> two UVC-specific controls:
> V4L2_CID_UVC_REGION_OF_INTEREST_RECT and
> V4L2_CID_UVC_REGION_OF_INTEREST_AUTO.
>
> Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> Signed-off-by: Yunke Cao <yunkec@google.com>
> Reviewed-by: Yunke Cao <yunkec@google.com>
> Tested-by: Yunke Cao <yunkec@google.com>
I just noticed this is missing a:
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Ricardo, I assume it is ok if we add that while merging
this series?
Regards,
Hans
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 81 ++++++++++++++++++++++++++++++++++++++
> drivers/media/usb/uvc/uvcvideo.h | 7 ++++
> include/uapi/linux/usb/video.h | 1 +
> include/uapi/linux/uvcvideo.h | 13 ++++++
> include/uapi/linux/v4l2-controls.h | 7 ++++
> 5 files changed, 109 insertions(+)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index dd6129becf58..86ea24b10b54 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -358,6 +358,24 @@ static const struct uvc_control_info uvc_ctrls[] = {
> .flags = UVC_CTRL_FLAG_GET_CUR
> | UVC_CTRL_FLAG_AUTO_UPDATE,
> },
> + /*
> + * UVC_CTRL_FLAG_AUTO_UPDATE is needed because the RoI may get updated
> + * by sensors.
> + * "This RoI should be the same as specified in most recent SET_CUR
> + * except in the case where the ‘Auto Detect and Track’ and/or
> + * ‘Image Stabilization’ bit have been set."
> + * 4.2.2.1.20 Digital Region of Interest (ROI) Control
> + */
> + {
> + .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
> + | UVC_CTRL_FLAG_AUTO_UPDATE,
> + },
> };
>
> static const u32 uvc_control_classes[] = {
> @@ -603,6 +621,44 @@ static const struct uvc_control_mapping *uvc_ctrl_filter_plf_mapping(
> return out_mapping;
> }
>
> +static int uvc_get_rect(struct uvc_control_mapping *mapping, u8 query,
> + const void *uvc_in, size_t v4l2_size, void *v4l2_out)
> +{
> + const struct uvc_rect *uvc_rect = uvc_in;
> + struct v4l2_rect *v4l2_rect = v4l2_out;
> +
> + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> + return -EINVAL;
> +
> + if (uvc_rect->left > uvc_rect->right ||
> + uvc_rect->top > uvc_rect->bottom)
> + return -EIO;
> +
> + v4l2_rect->top = uvc_rect->top;
> + v4l2_rect->left = uvc_rect->left;
> + v4l2_rect->height = uvc_rect->bottom - uvc_rect->top + 1;
> + v4l2_rect->width = uvc_rect->right - uvc_rect->left + 1;
> +
> + return 0;
> +}
> +
> +static int uvc_set_rect(struct uvc_control_mapping *mapping, size_t v4l2_size,
> + const void *v4l2_in, void *uvc_out)
> +{
> + struct uvc_rect *uvc_rect = uvc_out;
> + const struct v4l2_rect *v4l2_rect = v4l2_in;
> +
> + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> + return -EINVAL;
> +
> + uvc_rect->top = min(0xffff, v4l2_rect->top);
> + uvc_rect->left = min(0xffff, v4l2_rect->left);
> + uvc_rect->bottom = min(0xffff, v4l2_rect->top + v4l2_rect->height - 1);
> + uvc_rect->right = min(0xffff, v4l2_rect->left + v4l2_rect->width - 1);
> +
> + return 0;
> +}
> +
> static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> {
> .id = V4L2_CID_BRIGHTNESS,
> @@ -897,6 +953,28 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
> .filter_mapping = uvc_ctrl_filter_plf_mapping,
> },
> + {
> + .id = V4L2_CID_UVC_REGION_OF_INTEREST_RECT,
> + .entity = UVC_GUID_UVC_CAMERA,
> + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
> + .size = sizeof(struct uvc_rect) * 8,
> + .offset = 0,
> + .v4l2_type = V4L2_CTRL_TYPE_RECT,
> + .data_type = UVC_CTRL_DATA_TYPE_RECT,
> + .get = uvc_get_rect,
> + .set = uvc_set_rect,
> + .name = "Region Of Interest Rectangle",
> + },
> + {
> + .id = V4L2_CID_UVC_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,
> + .name = "Region Of Interest Auto Controls",
> + },
> };
>
> /* ------------------------------------------------------------------------
> @@ -1473,6 +1551,9 @@ static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
>
> static size_t uvc_mapping_v4l2_size(struct uvc_control_mapping *mapping)
> {
> + if (mapping->v4l2_type == V4L2_CTRL_TYPE_RECT)
> + return sizeof(struct v4l2_rect);
> +
> if (uvc_ctrl_mapping_is_compound(mapping))
> return DIV_ROUND_UP(mapping->size, 8);
>
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 8aca1a2fe587..17b79108599f 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -538,6 +538,13 @@ struct uvc_device_info {
> u16 uvc_version;
> };
>
> +struct uvc_rect {
> + u16 top;
> + u16 left;
> + u16 bottom;
> + u16 right;
> +} __packed;
> +
> struct uvc_status_streaming {
> u8 button;
> } __packed;
> diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
> index 2ff0e8a3a683..2afb4420e6c4 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/uvcvideo.h b/include/uapi/linux/uvcvideo.h
> index f86185456dc5..cbe15bca9569 100644
> --- a/include/uapi/linux/uvcvideo.h
> +++ b/include/uapi/linux/uvcvideo.h
> @@ -16,6 +16,7 @@
> #define UVC_CTRL_DATA_TYPE_BOOLEAN 3
> #define UVC_CTRL_DATA_TYPE_ENUM 4
> #define UVC_CTRL_DATA_TYPE_BITMASK 5
> +#define UVC_CTRL_DATA_TYPE_RECT 6
>
> /* Control flags */
> #define UVC_CTRL_FLAG_SET_CUR (1 << 0)
> @@ -38,6 +39,18 @@
>
> #define UVC_MENU_NAME_LEN 32
>
> +/* V4L2 driver-specific controls */
> +#define V4L2_CID_UVC_REGION_OF_INTEREST_RECT (V4L2_CID_USER_UVC_BASE + 1)
> +#define V4L2_CID_UVC_REGION_OF_INTEREST_AUTO (V4L2_CID_USER_UVC_BASE + 2)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IRIS (1 << 1)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IMAGE_STABILIZATION (1 << 6)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7)
> +
> struct uvc_menu_info {
> __u32 value;
> __u8 name[UVC_MENU_NAME_LEN];
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index 974fd254e573..72e32814ea83 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -215,6 +215,13 @@ enum v4l2_colorfx {
> */
> #define V4L2_CID_USER_THP7312_BASE (V4L2_CID_USER_BASE + 0x11c0)
>
> +/*
> + * The base for the uvc driver controls.
> + * See linux/uvcvideo.h for the list of controls.
> + * We reserve 64 controls for this driver.
> + */
> +#define V4L2_CID_USER_UVC_BASE (V4L2_CID_USER_BASE + 0x11e0)
> +
> /* MPEG-class control IDs */
> /* The MPEG controls are applicable to all codec controls
> * and the 'MPEG' part of the define is historical */
>
On Wed, 18 Dec 2024 at 22:02, Hans de Goede <hdegoede@redhat.com> wrote:
>
> p.s.
>
> On 10-Dec-24 10:42 AM, Ricardo Ribalda wrote:
> > From: Yunke Cao <yunkec@google.com>
> >
> > Implement support for ROI as described in UVC 1.5:
> > 4.2.2.1.20 Digital Region of Interest (ROI) Control
> >
> > ROI control is implemented using V4L2 control API as
> > two UVC-specific controls:
> > V4L2_CID_UVC_REGION_OF_INTEREST_RECT and
> > V4L2_CID_UVC_REGION_OF_INTEREST_AUTO.
> >
> > Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> > Signed-off-by: Yunke Cao <yunkec@google.com>
> > Reviewed-by: Yunke Cao <yunkec@google.com>
> > Tested-by: Yunke Cao <yunkec@google.com>
>
> I just noticed this is missing a:
>
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
>
> Ricardo, I assume it is ok if we add that while merging
> this series?
Sure, please do. Thanks!
To make b4 happy:
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
>
> Regards,
>
> Hans
>
>
>
> > ---
> > drivers/media/usb/uvc/uvc_ctrl.c | 81 ++++++++++++++++++++++++++++++++++++++
> > drivers/media/usb/uvc/uvcvideo.h | 7 ++++
> > include/uapi/linux/usb/video.h | 1 +
> > include/uapi/linux/uvcvideo.h | 13 ++++++
> > include/uapi/linux/v4l2-controls.h | 7 ++++
> > 5 files changed, 109 insertions(+)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> > index dd6129becf58..86ea24b10b54 100644
> > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > @@ -358,6 +358,24 @@ static const struct uvc_control_info uvc_ctrls[] = {
> > .flags = UVC_CTRL_FLAG_GET_CUR
> > | UVC_CTRL_FLAG_AUTO_UPDATE,
> > },
> > + /*
> > + * UVC_CTRL_FLAG_AUTO_UPDATE is needed because the RoI may get updated
> > + * by sensors.
> > + * "This RoI should be the same as specified in most recent SET_CUR
> > + * except in the case where the ‘Auto Detect and Track’ and/or
> > + * ‘Image Stabilization’ bit have been set."
> > + * 4.2.2.1.20 Digital Region of Interest (ROI) Control
> > + */
> > + {
> > + .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
> > + | UVC_CTRL_FLAG_AUTO_UPDATE,
> > + },
> > };
> >
> > static const u32 uvc_control_classes[] = {
> > @@ -603,6 +621,44 @@ static const struct uvc_control_mapping *uvc_ctrl_filter_plf_mapping(
> > return out_mapping;
> > }
> >
> > +static int uvc_get_rect(struct uvc_control_mapping *mapping, u8 query,
> > + const void *uvc_in, size_t v4l2_size, void *v4l2_out)
> > +{
> > + const struct uvc_rect *uvc_rect = uvc_in;
> > + struct v4l2_rect *v4l2_rect = v4l2_out;
> > +
> > + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> > + return -EINVAL;
> > +
> > + if (uvc_rect->left > uvc_rect->right ||
> > + uvc_rect->top > uvc_rect->bottom)
> > + return -EIO;
> > +
> > + v4l2_rect->top = uvc_rect->top;
> > + v4l2_rect->left = uvc_rect->left;
> > + v4l2_rect->height = uvc_rect->bottom - uvc_rect->top + 1;
> > + v4l2_rect->width = uvc_rect->right - uvc_rect->left + 1;
> > +
> > + return 0;
> > +}
> > +
> > +static int uvc_set_rect(struct uvc_control_mapping *mapping, size_t v4l2_size,
> > + const void *v4l2_in, void *uvc_out)
> > +{
> > + struct uvc_rect *uvc_rect = uvc_out;
> > + const struct v4l2_rect *v4l2_rect = v4l2_in;
> > +
> > + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> > + return -EINVAL;
> > +
> > + uvc_rect->top = min(0xffff, v4l2_rect->top);
> > + uvc_rect->left = min(0xffff, v4l2_rect->left);
> > + uvc_rect->bottom = min(0xffff, v4l2_rect->top + v4l2_rect->height - 1);
> > + uvc_rect->right = min(0xffff, v4l2_rect->left + v4l2_rect->width - 1);
> > +
> > + return 0;
> > +}
> > +
> > static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> > {
> > .id = V4L2_CID_BRIGHTNESS,
> > @@ -897,6 +953,28 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> > .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
> > .filter_mapping = uvc_ctrl_filter_plf_mapping,
> > },
> > + {
> > + .id = V4L2_CID_UVC_REGION_OF_INTEREST_RECT,
> > + .entity = UVC_GUID_UVC_CAMERA,
> > + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
> > + .size = sizeof(struct uvc_rect) * 8,
> > + .offset = 0,
> > + .v4l2_type = V4L2_CTRL_TYPE_RECT,
> > + .data_type = UVC_CTRL_DATA_TYPE_RECT,
> > + .get = uvc_get_rect,
> > + .set = uvc_set_rect,
> > + .name = "Region Of Interest Rectangle",
> > + },
> > + {
> > + .id = V4L2_CID_UVC_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,
> > + .name = "Region Of Interest Auto Controls",
> > + },
> > };
> >
> > /* ------------------------------------------------------------------------
> > @@ -1473,6 +1551,9 @@ static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
> >
> > static size_t uvc_mapping_v4l2_size(struct uvc_control_mapping *mapping)
> > {
> > + if (mapping->v4l2_type == V4L2_CTRL_TYPE_RECT)
> > + return sizeof(struct v4l2_rect);
> > +
> > if (uvc_ctrl_mapping_is_compound(mapping))
> > return DIV_ROUND_UP(mapping->size, 8);
> >
> > diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> > index 8aca1a2fe587..17b79108599f 100644
> > --- a/drivers/media/usb/uvc/uvcvideo.h
> > +++ b/drivers/media/usb/uvc/uvcvideo.h
> > @@ -538,6 +538,13 @@ struct uvc_device_info {
> > u16 uvc_version;
> > };
> >
> > +struct uvc_rect {
> > + u16 top;
> > + u16 left;
> > + u16 bottom;
> > + u16 right;
> > +} __packed;
> > +
> > struct uvc_status_streaming {
> > u8 button;
> > } __packed;
> > diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
> > index 2ff0e8a3a683..2afb4420e6c4 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/uvcvideo.h b/include/uapi/linux/uvcvideo.h
> > index f86185456dc5..cbe15bca9569 100644
> > --- a/include/uapi/linux/uvcvideo.h
> > +++ b/include/uapi/linux/uvcvideo.h
> > @@ -16,6 +16,7 @@
> > #define UVC_CTRL_DATA_TYPE_BOOLEAN 3
> > #define UVC_CTRL_DATA_TYPE_ENUM 4
> > #define UVC_CTRL_DATA_TYPE_BITMASK 5
> > +#define UVC_CTRL_DATA_TYPE_RECT 6
> >
> > /* Control flags */
> > #define UVC_CTRL_FLAG_SET_CUR (1 << 0)
> > @@ -38,6 +39,18 @@
> >
> > #define UVC_MENU_NAME_LEN 32
> >
> > +/* V4L2 driver-specific controls */
> > +#define V4L2_CID_UVC_REGION_OF_INTEREST_RECT (V4L2_CID_USER_UVC_BASE + 1)
> > +#define V4L2_CID_UVC_REGION_OF_INTEREST_AUTO (V4L2_CID_USER_UVC_BASE + 2)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IRIS (1 << 1)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IMAGE_STABILIZATION (1 << 6)
> > +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7)
> > +
> > struct uvc_menu_info {
> > __u32 value;
> > __u8 name[UVC_MENU_NAME_LEN];
> > diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> > index 974fd254e573..72e32814ea83 100644
> > --- a/include/uapi/linux/v4l2-controls.h
> > +++ b/include/uapi/linux/v4l2-controls.h
> > @@ -215,6 +215,13 @@ enum v4l2_colorfx {
> > */
> > #define V4L2_CID_USER_THP7312_BASE (V4L2_CID_USER_BASE + 0x11c0)
> >
> > +/*
> > + * The base for the uvc driver controls.
> > + * See linux/uvcvideo.h for the list of controls.
> > + * We reserve 64 controls for this driver.
> > + */
> > +#define V4L2_CID_USER_UVC_BASE (V4L2_CID_USER_BASE + 0x11e0)
> > +
> > /* MPEG-class control IDs */
> > /* The MPEG controls are applicable to all codec controls
> > * and the 'MPEG' part of the define is historical */
> >
>
--
Ricardo Ribalda
Hi,
On 10-Dec-24 10:42 AM, Ricardo Ribalda wrote:
> From: Yunke Cao <yunkec@google.com>
>
> Implement support for ROI as described in UVC 1.5:
> 4.2.2.1.20 Digital Region of Interest (ROI) Control
>
> ROI control is implemented using V4L2 control API as
> two UVC-specific controls:
> V4L2_CID_UVC_REGION_OF_INTEREST_RECT and
> V4L2_CID_UVC_REGION_OF_INTEREST_AUTO.
>
> Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> Signed-off-by: Yunke Cao <yunkec@google.com>
> Reviewed-by: Yunke Cao <yunkec@google.com>
> Tested-by: Yunke Cao <yunkec@google.com>
Thank you for the new version, this looks good to me now:
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Regards,
Hans
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 81 ++++++++++++++++++++++++++++++++++++++
> drivers/media/usb/uvc/uvcvideo.h | 7 ++++
> include/uapi/linux/usb/video.h | 1 +
> include/uapi/linux/uvcvideo.h | 13 ++++++
> include/uapi/linux/v4l2-controls.h | 7 ++++
> 5 files changed, 109 insertions(+)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index dd6129becf58..86ea24b10b54 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -358,6 +358,24 @@ static const struct uvc_control_info uvc_ctrls[] = {
> .flags = UVC_CTRL_FLAG_GET_CUR
> | UVC_CTRL_FLAG_AUTO_UPDATE,
> },
> + /*
> + * UVC_CTRL_FLAG_AUTO_UPDATE is needed because the RoI may get updated
> + * by sensors.
> + * "This RoI should be the same as specified in most recent SET_CUR
> + * except in the case where the ‘Auto Detect and Track’ and/or
> + * ‘Image Stabilization’ bit have been set."
> + * 4.2.2.1.20 Digital Region of Interest (ROI) Control
> + */
> + {
> + .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
> + | UVC_CTRL_FLAG_AUTO_UPDATE,
> + },
> };
>
> static const u32 uvc_control_classes[] = {
> @@ -603,6 +621,44 @@ static const struct uvc_control_mapping *uvc_ctrl_filter_plf_mapping(
> return out_mapping;
> }
>
> +static int uvc_get_rect(struct uvc_control_mapping *mapping, u8 query,
> + const void *uvc_in, size_t v4l2_size, void *v4l2_out)
> +{
> + const struct uvc_rect *uvc_rect = uvc_in;
> + struct v4l2_rect *v4l2_rect = v4l2_out;
> +
> + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> + return -EINVAL;
> +
> + if (uvc_rect->left > uvc_rect->right ||
> + uvc_rect->top > uvc_rect->bottom)
> + return -EIO;
> +
> + v4l2_rect->top = uvc_rect->top;
> + v4l2_rect->left = uvc_rect->left;
> + v4l2_rect->height = uvc_rect->bottom - uvc_rect->top + 1;
> + v4l2_rect->width = uvc_rect->right - uvc_rect->left + 1;
> +
> + return 0;
> +}
> +
> +static int uvc_set_rect(struct uvc_control_mapping *mapping, size_t v4l2_size,
> + const void *v4l2_in, void *uvc_out)
> +{
> + struct uvc_rect *uvc_rect = uvc_out;
> + const struct v4l2_rect *v4l2_rect = v4l2_in;
> +
> + if (WARN_ON(v4l2_size != sizeof(struct v4l2_rect)))
> + return -EINVAL;
> +
> + uvc_rect->top = min(0xffff, v4l2_rect->top);
> + uvc_rect->left = min(0xffff, v4l2_rect->left);
> + uvc_rect->bottom = min(0xffff, v4l2_rect->top + v4l2_rect->height - 1);
> + uvc_rect->right = min(0xffff, v4l2_rect->left + v4l2_rect->width - 1);
> +
> + return 0;
> +}
> +
> static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> {
> .id = V4L2_CID_BRIGHTNESS,
> @@ -897,6 +953,28 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
> .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
> .filter_mapping = uvc_ctrl_filter_plf_mapping,
> },
> + {
> + .id = V4L2_CID_UVC_REGION_OF_INTEREST_RECT,
> + .entity = UVC_GUID_UVC_CAMERA,
> + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL,
> + .size = sizeof(struct uvc_rect) * 8,
> + .offset = 0,
> + .v4l2_type = V4L2_CTRL_TYPE_RECT,
> + .data_type = UVC_CTRL_DATA_TYPE_RECT,
> + .get = uvc_get_rect,
> + .set = uvc_set_rect,
> + .name = "Region Of Interest Rectangle",
> + },
> + {
> + .id = V4L2_CID_UVC_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,
> + .name = "Region Of Interest Auto Controls",
> + },
> };
>
> /* ------------------------------------------------------------------------
> @@ -1473,6 +1551,9 @@ static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
>
> static size_t uvc_mapping_v4l2_size(struct uvc_control_mapping *mapping)
> {
> + if (mapping->v4l2_type == V4L2_CTRL_TYPE_RECT)
> + return sizeof(struct v4l2_rect);
> +
> if (uvc_ctrl_mapping_is_compound(mapping))
> return DIV_ROUND_UP(mapping->size, 8);
>
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 8aca1a2fe587..17b79108599f 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -538,6 +538,13 @@ struct uvc_device_info {
> u16 uvc_version;
> };
>
> +struct uvc_rect {
> + u16 top;
> + u16 left;
> + u16 bottom;
> + u16 right;
> +} __packed;
> +
> struct uvc_status_streaming {
> u8 button;
> } __packed;
> diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
> index 2ff0e8a3a683..2afb4420e6c4 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/uvcvideo.h b/include/uapi/linux/uvcvideo.h
> index f86185456dc5..cbe15bca9569 100644
> --- a/include/uapi/linux/uvcvideo.h
> +++ b/include/uapi/linux/uvcvideo.h
> @@ -16,6 +16,7 @@
> #define UVC_CTRL_DATA_TYPE_BOOLEAN 3
> #define UVC_CTRL_DATA_TYPE_ENUM 4
> #define UVC_CTRL_DATA_TYPE_BITMASK 5
> +#define UVC_CTRL_DATA_TYPE_RECT 6
>
> /* Control flags */
> #define UVC_CTRL_FLAG_SET_CUR (1 << 0)
> @@ -38,6 +39,18 @@
>
> #define UVC_MENU_NAME_LEN 32
>
> +/* V4L2 driver-specific controls */
> +#define V4L2_CID_UVC_REGION_OF_INTEREST_RECT (V4L2_CID_USER_UVC_BASE + 1)
> +#define V4L2_CID_UVC_REGION_OF_INTEREST_AUTO (V4L2_CID_USER_UVC_BASE + 2)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IRIS (1 << 1)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IMAGE_STABILIZATION (1 << 6)
> +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7)
> +
> struct uvc_menu_info {
> __u32 value;
> __u8 name[UVC_MENU_NAME_LEN];
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index 974fd254e573..72e32814ea83 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -215,6 +215,13 @@ enum v4l2_colorfx {
> */
> #define V4L2_CID_USER_THP7312_BASE (V4L2_CID_USER_BASE + 0x11c0)
>
> +/*
> + * The base for the uvc driver controls.
> + * See linux/uvcvideo.h for the list of controls.
> + * We reserve 64 controls for this driver.
> + */
> +#define V4L2_CID_USER_UVC_BASE (V4L2_CID_USER_BASE + 0x11e0)
> +
> /* MPEG-class control IDs */
> /* The MPEG controls are applicable to all codec controls
> * and the 'MPEG' part of the define is historical */
>
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