The v4l2-compliance tool expects that if VIDIOC_CROPCAP is defined, then
VIDIOC_G_SELECTION for TGT_CROP_BOUNDS/DEFAULT is also defined (or COMPOSE
in the case of an output device).
In fact, all that a driver has to do to implement cropcap is to support
those two targets since the v4l2 core will implement cropcap and fill in
the pixelaspect to 1/1 by default.
Implementing cropcap is only needed if the pixelaspect isn't square.
So implement g_selection instead of cropcap in uvc to fix the v4l2-compliance
failure.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 43e953f..7078d3e 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -1018,26 +1018,35 @@ static int uvc_ioctl_querymenu(struct file *file, void *fh,
return uvc_query_v4l2_menu(chain, qm);
}
-static int uvc_ioctl_cropcap(struct file *file, void *fh,
- struct v4l2_cropcap *ccap)
+static int uvc_ioctl_g_selection(struct file *file, void *fh,
+ struct v4l2_selection *sel)
{
struct uvc_fh *handle = fh;
struct uvc_streaming *stream = handle->stream;
- if (ccap->type != stream->type)
+ if (sel->type != stream->type)
return -EINVAL;
- ccap->bounds.left = 0;
- ccap->bounds.top = 0;
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ if (stream->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ if (stream->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ sel->r.left = 0;
+ sel->r.top = 0;
mutex_lock(&stream->mutex);
- ccap->bounds.width = stream->cur_frame->wWidth;
- ccap->bounds.height = stream->cur_frame->wHeight;
+ sel->r.width = stream->cur_frame->wWidth;
+ sel->r.height = stream->cur_frame->wHeight;
mutex_unlock(&stream->mutex);
-
- ccap->defrect = ccap->bounds;
-
- ccap->pixelaspect.numerator = 1;
- ccap->pixelaspect.denominator = 1;
return 0;
}
@@ -1449,7 +1458,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = {
.vidioc_s_ext_ctrls = uvc_ioctl_s_ext_ctrls,
.vidioc_try_ext_ctrls = uvc_ioctl_try_ext_ctrls,
.vidioc_querymenu = uvc_ioctl_querymenu,
- .vidioc_cropcap = uvc_ioctl_cropcap,
+ .vidioc_g_selection = uvc_ioctl_g_selection,
.vidioc_g_parm = uvc_ioctl_g_parm,
.vidioc_s_parm = uvc_ioctl_s_parm,
.vidioc_enum_framesizes = uvc_ioctl_enum_framesizes,
--
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