2014-10-06 20:41:24

by Vincent Palatin

Subject: Re: [PATCH v4 2/2] V4L: uvcvideo: Add support for pan/tilt speed controls

On Thu, Sep 4, 2014 at 1:29 PM, Laurent Pinchart
<[email protected]> wrote:
>
> Hi Vincent,
>
> Thank you for the patch.
>
> On Wednesday 03 September 2014 17:47:48 Vincent Palatin wrote:
> > Map V4L2_CID_TILT_SPEED and V4L2_CID_PAN_SPEED to the standard UVC
> > CT_PANTILT_RELATIVE_CONTROL terminal control request.
> >
> > Tested by plugging a Logitech ConferenceCam C3000e USB camera
> > and controlling pan/tilt from the userspace using the VIDIOC_S_CTRL ioctl.
> > Verified that it can pan and tilt at the same time in both directions.
> >
> > Signed-off-by: Vincent Palatin <[email protected]>
>
> Small comment here, as Pawel has reviewed the previous version, you could have
> added his Reviewed-by tag to the patch.
>
> > ---
> > Changes from v1/v2:
> > - rebased
> > Changes from v3:
> > - removed gerrit-id
> >
> > drivers/media/usb/uvc/uvc_ctrl.c | 58 ++++++++++++++++++++++++++++++++++---
> > 1 file changed, 55 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c
> > b/drivers/media/usb/uvc/uvc_ctrl.c index 0eb82106..d703cb0 100644
> > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > @@ -309,9 +309,8 @@ static struct uvc_control_info uvc_ctrls[] = {
> > .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > .index = 12,
> > .size = 4,
> > - .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
> > - | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
> > - | UVC_CTRL_FLAG_GET_DEF
> > + .flags = UVC_CTRL_FLAG_SET_CUR
> > + | UVC_CTRL_FLAG_GET_RANGE
> > | UVC_CTRL_FLAG_AUTO_UPDATE,
> > },
> > {
> > @@ -391,6 +390,35 @@ static void uvc_ctrl_set_zoom(struct
> > uvc_control_mapping *mapping, data[2] = min((int)abs(value), 0xff);
> > }
> >
> > +static __s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping,
> > + __u8 query, const __u8 *data)
> > +{
> > + int first = mapping->offset / 8;
>
> Nitpicking, I would use unsigned int instead of int here, as the value can't
> be negative (same comment for the next function).
>
> If you're fine with that there's no need to resubmit, I can modify this when
> applying.


Yes, I'm fine with that.


>
>
> > + __s8 rel = (__s8)data[first];
> > +
> > + switch (query) {
> > + case UVC_GET_CUR:
> > + return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
> > + : -data[first+1]);
> > + case UVC_GET_MIN:
> > + return -data[first+1];
> > + case UVC_GET_MAX:
> > + case UVC_GET_RES:
> > + case UVC_GET_DEF:
> > + default:
> > + return data[first+1];
> > + }
> > +}
> > +
> > +static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping,
> > + __s32 value, __u8 *data)
> > +{
> > + int first = mapping->offset / 8;
> > +
> > + data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff;
> > + data[first+1] = min_t(int, abs(value), 0xff);
> > +}
> > +
> > static struct uvc_control_mapping uvc_ctrl_mappings[] = {
> > {
> > .id = V4L2_CID_BRIGHTNESS,
> > @@ -677,6 +705,30 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] =
> > { .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > },
> > {
> > + .id = V4L2_CID_PAN_SPEED,
> > + .name = "Pan (Speed)",
> > + .entity = UVC_GUID_UVC_CAMERA,
> > + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > + .size = 16,
> > + .offset = 0,
> > + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> > + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > + .get = uvc_ctrl_get_rel_speed,
> > + .set = uvc_ctrl_set_rel_speed,
> > + },
> > + {
> > + .id = V4L2_CID_TILT_SPEED,
> > + .name = "Tilt (Speed)",
> > + .entity = UVC_GUID_UVC_CAMERA,
> > + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > + .size = 16,
> > + .offset = 16,
> > + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> > + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > + .get = uvc_ctrl_get_rel_speed,
> > + .set = uvc_ctrl_set_rel_speed,
> > + },
> > + {
> > .id = V4L2_CID_PRIVACY,
> > .name = "Privacy",
> > .entity = UVC_GUID_UVC_CAMERA,
>
> --
> Regards,
>
> Laurent Pinchart
>

2014-10-06 21:06:05

by Vincent Palatin

Subject: [PATCH v5 2/2] V4L: uvcvideo: Add support for pan/tilt speed controls

Map V4L2_CID_TILT_SPEED and V4L2_CID_PAN_SPEED to the standard UVC
CT_PANTILT_RELATIVE_CONTROL terminal control request.

Tested by plugging a Logitech ConferenceCam C3000e USB camera
and controlling pan/tilt from the userspace using the VIDIOC_S_CTRL ioctl.
Verified that it can pan and tilt at the same time in both directions.

Signed-off-by: Vincent Palatin <[email protected]>
Reviewed-by: Pawel Osciak <[email protected]>
---
Changes from v1/v2:
- rebased
Changes from v3:
- removed gerrit-id
Chnages from v4:
- switched "offset" to unsigned int

drivers/media/usb/uvc/uvc_ctrl.c | 58 +++++++++++++++++++++++++++++++++++++---
1 file changed, 55 insertions(+), 3 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 0eb82106..d2d1755 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -309,9 +309,8 @@ static struct uvc_control_info uvc_ctrls[] = {
.selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
.index = 12,
.size = 4,
- .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
- | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
- | UVC_CTRL_FLAG_GET_DEF
+ .flags = UVC_CTRL_FLAG_SET_CUR
+ | UVC_CTRL_FLAG_GET_RANGE
| UVC_CTRL_FLAG_AUTO_UPDATE,
},
{
@@ -391,6 +390,35 @@ static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping,
data[2] = min((int)abs(value), 0xff);
}

+static __s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping,
+ __u8 query, const __u8 *data)
+{
+ unsigned int first = mapping->offset / 8;
+ __s8 rel = (__s8)data[first];
+
+ switch (query) {
+ case UVC_GET_CUR:
+ return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
+ : -data[first+1]);
+ case UVC_GET_MIN:
+ return -data[first+1];
+ case UVC_GET_MAX:
+ case UVC_GET_RES:
+ case UVC_GET_DEF:
+ default:
+ return data[first+1];
+ }
+}
+
+static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping,
+ __s32 value, __u8 *data)
+{
+ unsigned int first = mapping->offset / 8;
+
+ data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff;
+ data[first+1] = min_t(int, abs(value), 0xff);
+}
+
static struct uvc_control_mapping uvc_ctrl_mappings[] = {
{
.id = V4L2_CID_BRIGHTNESS,
@@ -677,6 +705,30 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
.data_type = UVC_CTRL_DATA_TYPE_SIGNED,
},
{
+ .id = V4L2_CID_PAN_SPEED,
+ .name = "Pan (Speed)",
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
+ .size = 16,
+ .offset = 0,
+ .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
+ .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
+ .get = uvc_ctrl_get_rel_speed,
+ .set = uvc_ctrl_set_rel_speed,
+ },
+ {
+ .id = V4L2_CID_TILT_SPEED,
+ .name = "Tilt (Speed)",
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
+ .size = 16,
+ .offset = 16,
+ .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
+ .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
+ .get = uvc_ctrl_get_rel_speed,
+ .set = uvc_ctrl_set_rel_speed,
+ },
+ {
.id = V4L2_CID_PRIVACY,
.name = "Privacy",
.entity = UVC_GUID_UVC_CAMERA,
--
2.1.0.rc2.206.gedb03e5

2014-10-07 16:36:13

by Laurent Pinchart

Subject: Re: [PATCH v5 2/2] V4L: uvcvideo: Add support for pan/tilt speed controls

Hi Vincent,

Thank you for the patch. Mauro has already merged this in his tree, it should
appear in v3.18-rc1.

On Monday 06 October 2014 14:05:59 Vincent Palatin wrote:
> Map V4L2_CID_TILT_SPEED and V4L2_CID_PAN_SPEED to the standard UVC
> CT_PANTILT_RELATIVE_CONTROL terminal control request.
>
> Tested by plugging a Logitech ConferenceCam C3000e USB camera
> and controlling pan/tilt from the userspace using the VIDIOC_S_CTRL ioctl.
> Verified that it can pan and tilt at the same time in both directions.
>
> Signed-off-by: Vincent Palatin <[email protected]>
> Reviewed-by: Pawel Osciak <[email protected]>
> ---
> Changes from v1/v2:
> - rebased
> Changes from v3:
> - removed gerrit-id
> Chnages from v4:
> - switched "offset" to unsigned int
>
> drivers/media/usb/uvc/uvc_ctrl.c | 58 ++++++++++++++++++++++++++++++++++---
> 1 file changed, 55 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c
> b/drivers/media/usb/uvc/uvc_ctrl.c index 0eb82106..d2d1755 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -309,9 +309,8 @@ static struct uvc_control_info uvc_ctrls[] = {
> .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> .index = 12,
> .size = 4,
> - .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
> - | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
> - | UVC_CTRL_FLAG_GET_DEF
> + .flags = UVC_CTRL_FLAG_SET_CUR
> + | UVC_CTRL_FLAG_GET_RANGE
>
> | UVC_CTRL_FLAG_AUTO_UPDATE,
>
> },
> {
> @@ -391,6 +390,35 @@ static void uvc_ctrl_set_zoom(struct
> uvc_control_mapping *mapping, data[2] = min((int)abs(value), 0xff);
> }
>
> +static __s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping,
> + __u8 query, const __u8 *data)
> +{
> + unsigned int first = mapping->offset / 8;
> + __s8 rel = (__s8)data[first];
> +
> + switch (query) {
> + case UVC_GET_CUR:
> + return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
> + : -data[first+1]);
> + case UVC_GET_MIN:
> + return -data[first+1];
> + case UVC_GET_MAX:
> + case UVC_GET_RES:
> + case UVC_GET_DEF:
> + default:
> + return data[first+1];
> + }
> +}
> +
> +static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping,
> + __s32 value, __u8 *data)
> +{
> + unsigned int first = mapping->offset / 8;
> +
> + data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff;
> + data[first+1] = min_t(int, abs(value), 0xff);
> +}
> +
> static struct uvc_control_mapping uvc_ctrl_mappings[] = {
> {
> .id = V4L2_CID_BRIGHTNESS,
> @@ -677,6 +705,30 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] =
> { .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> },
> {
> + .id = V4L2_CID_PAN_SPEED,
> + .name = "Pan (Speed)",
> + .entity = UVC_GUID_UVC_CAMERA,
> + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> + .size = 16,
> + .offset = 0,
> + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> + .get = uvc_ctrl_get_rel_speed,
> + .set = uvc_ctrl_set_rel_speed,
> + },
> + {
> + .id = V4L2_CID_TILT_SPEED,
> + .name = "Tilt (Speed)",
> + .entity = UVC_GUID_UVC_CAMERA,
> + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> + .size = 16,
> + .offset = 16,
> + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> + .get = uvc_ctrl_get_rel_speed,
> + .set = uvc_ctrl_set_rel_speed,
> + },
> + {
> .id = V4L2_CID_PRIVACY,
> .name = "Privacy",
> .entity = UVC_GUID_UVC_CAMERA,

--
Regards,

Laurent Pinchart

2014-10-07 16:41:40

by Vincent Palatin

Subject: Re: [PATCH v5 2/2] V4L: uvcvideo: Add support for pan/tilt speed controls

On Tue, Oct 7, 2014 at 9:36 AM, Laurent Pinchart
<[email protected]> wrote:
>
> Hi Vincent,
>
> Thank you for the patch. Mauro has already merged this in his tree, it should
> appear in v3.18-rc1.
>

Great ! I missed the merge.

Thanks,
--
Vincent

>
> On Monday 06 October 2014 14:05:59 Vincent Palatin wrote:
> > Map V4L2_CID_TILT_SPEED and V4L2_CID_PAN_SPEED to the standard UVC
> > CT_PANTILT_RELATIVE_CONTROL terminal control request.
> >
> > Tested by plugging a Logitech ConferenceCam C3000e USB camera
> > and controlling pan/tilt from the userspace using the VIDIOC_S_CTRL ioctl.
> > Verified that it can pan and tilt at the same time in both directions.
> >
> > Signed-off-by: Vincent Palatin <[email protected]>
> > Reviewed-by: Pawel Osciak <[email protected]>
> > ---
> > Changes from v1/v2:
> > - rebased
> > Changes from v3:
> > - removed gerrit-id
> > Chnages from v4:
> > - switched "offset" to unsigned int
> >
> > drivers/media/usb/uvc/uvc_ctrl.c | 58 ++++++++++++++++++++++++++++++++++---
> > 1 file changed, 55 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c
> > b/drivers/media/usb/uvc/uvc_ctrl.c index 0eb82106..d2d1755 100644
> > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > @@ -309,9 +309,8 @@ static struct uvc_control_info uvc_ctrls[] = {
> > .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > .index = 12,
> > .size = 4,
> > - .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN
> > - | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES
> > - | UVC_CTRL_FLAG_GET_DEF
> > + .flags = UVC_CTRL_FLAG_SET_CUR
> > + | UVC_CTRL_FLAG_GET_RANGE
> >
> > | UVC_CTRL_FLAG_AUTO_UPDATE,
> >
> > },
> > {
> > @@ -391,6 +390,35 @@ static void uvc_ctrl_set_zoom(struct
> > uvc_control_mapping *mapping, data[2] = min((int)abs(value), 0xff);
> > }
> >
> > +static __s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping,
> > + __u8 query, const __u8 *data)
> > +{
> > + unsigned int first = mapping->offset / 8;
> > + __s8 rel = (__s8)data[first];
> > +
> > + switch (query) {
> > + case UVC_GET_CUR:
> > + return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
> > + : -data[first+1]);
> > + case UVC_GET_MIN:
> > + return -data[first+1];
> > + case UVC_GET_MAX:
> > + case UVC_GET_RES:
> > + case UVC_GET_DEF:
> > + default:
> > + return data[first+1];
> > + }
> > +}
> > +
> > +static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping,
> > + __s32 value, __u8 *data)
> > +{
> > + unsigned int first = mapping->offset / 8;
> > +
> > + data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff;
> > + data[first+1] = min_t(int, abs(value), 0xff);
> > +}
> > +
> > static struct uvc_control_mapping uvc_ctrl_mappings[] = {
> > {
> > .id = V4L2_CID_BRIGHTNESS,
> > @@ -677,6 +705,30 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] =
> > { .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > },
> > {
> > + .id = V4L2_CID_PAN_SPEED,
> > + .name = "Pan (Speed)",
> > + .entity = UVC_GUID_UVC_CAMERA,
> > + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > + .size = 16,
> > + .offset = 0,
> > + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> > + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > + .get = uvc_ctrl_get_rel_speed,
> > + .set = uvc_ctrl_set_rel_speed,
> > + },
> > + {
> > + .id = V4L2_CID_TILT_SPEED,
> > + .name = "Tilt (Speed)",
> > + .entity = UVC_GUID_UVC_CAMERA,
> > + .selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
> > + .size = 16,
> > + .offset = 16,
> > + .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
> > + .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
> > + .get = uvc_ctrl_get_rel_speed,
> > + .set = uvc_ctrl_set_rel_speed,
> > + },
> > + {
> > .id = V4L2_CID_PRIVACY,
> > .name = "Privacy",
> > .entity = UVC_GUID_UVC_CAMERA,
>
> --
> Regards,
>
> Laurent Pinchart
>