From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
If the vidioc_cropcap op is implemented by the driver then the v4l2
core will call that directly.
If g_selection is available, then the core cropcap implementation
uses g_selection to fill in the bounds and defrect and it sets the
pixelaspect to 1x1.
But if both are available, then I would like to use g_selection to
fill in defrect and bounds before calling cropcap. That way the
driver's cropcap implementation doesn't have to set defrect or
bounds.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-ioctl.c | 48 +++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 22 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 8d4a25d..f81b9aa 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1751,37 +1751,41 @@ static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
struct v4l2_cropcap *p = arg;
- struct v4l2_selection s = { .type = p->type };
- int ret;
- if (ops->vidioc_cropcap)
- return ops->vidioc_cropcap(file, fh, p);
+ if (ops->vidioc_g_selection) {
+ struct v4l2_selection s = { .type = p->type };
+ int ret;
- /* obtaining bounds */
- if (V4L2_TYPE_IS_OUTPUT(p->type))
- s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
- else
- s.target = V4L2_SEL_TGT_CROP_BOUNDS;
+ /* obtaining bounds */
+ if (V4L2_TYPE_IS_OUTPUT(p->type))
+ s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
+ else
+ s.target = V4L2_SEL_TGT_CROP_BOUNDS;
- ret = ops->vidioc_g_selection(file, fh, &s);
- if (ret)
- return ret;
- p->bounds = s.r;
+ ret = ops->vidioc_g_selection(file, fh, &s);
+ if (ret)
+ return ret;
+ p->bounds = s.r;
- /* obtaining defrect */
- if (V4L2_TYPE_IS_OUTPUT(p->type))
- s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
- else
- s.target = V4L2_SEL_TGT_CROP_DEFAULT;
+ /* obtaining defrect */
+ if (V4L2_TYPE_IS_OUTPUT(p->type))
+ s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
+ else
+ s.target = V4L2_SEL_TGT_CROP_DEFAULT;
- ret = ops->vidioc_g_selection(file, fh, &s);
- if (ret)
- return ret;
- p->defrect = s.r;
+ ret = ops->vidioc_g_selection(file, fh, &s);
+ if (ret)
+ return ret;
+ p->defrect = s.r;
+ }
/* setting trivial pixelaspect */
p->pixelaspect.numerator = 1;
p->pixelaspect.denominator = 1;
+
+ if (ops->vidioc_cropcap)
+ return ops->vidioc_cropcap(file, fh, p);
+
return 0;
}
--
2.0.0
--
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