Commit 1461fe7a authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

[media] uvcvideo: fix cropcap v4l2-compliance failure 



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.

[Added blank lines for improved readability]

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent befd25a2

drivers/media/usb/uvc/uvc_v4l2.c

+23 −12
Original line number Diff line number Diff line
@@ -1018,26 +1018,37 @@ 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;

}
@@ -1452,7 +1463,7 @@ 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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