diff options
| author | Sakari Ailus <sakari.ailus@iki.fi> | 2011-10-14 14:14:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-04-10 15:00:41 -0300 |
| commit | ae184cda8d0eebfea6cf217abc3f94a7cfffe24d (patch) | |
| tree | b158537e0b4f894578748784f581a18af5b2cc0c /drivers/media/video/v4l2-subdev.c | |
| parent | c520331a52094182d6682fa7d6f630bdfbfc2974 (diff) | |
[media] v4l: VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLs
Add support for VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION
IOCTLs. They replace functionality provided by VIDIOC_SUBDEV_S_CROP and
VIDIOC_SUBDEV_G_CROP IOCTLs and also add new functionality (composing).
VIDIOC_SUBDEV_G_CROP and VIDIOC_SUBDEV_S_CROP continue to be supported.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-subdev.c')
| -rw-r--r-- | drivers/media/video/v4l2-subdev.c | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c index 6fe88e965a8..7d225389bfb 100644 --- a/drivers/media/video/v4l2-subdev.c +++ b/drivers/media/video/v4l2-subdev.c @@ -35,14 +35,9 @@ static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) { #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) - /* Allocate try format and crop in the same memory block */ - fh->try_fmt = kzalloc((sizeof(*fh->try_fmt) + sizeof(*fh->try_crop)) - * sd->entity.num_pads, GFP_KERNEL); - if (fh->try_fmt == NULL) + fh->pad = kzalloc(sizeof(*fh->pad) * sd->entity.num_pads, GFP_KERNEL); + if (fh->pad == NULL) return -ENOMEM; - - fh->try_crop = (struct v4l2_rect *) - (fh->try_fmt + sd->entity.num_pads); #endif return 0; } @@ -50,9 +45,8 @@ static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) static void subdev_fh_free(struct v4l2_subdev_fh *fh) { #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) - kfree(fh->try_fmt); - fh->try_fmt = NULL; - fh->try_crop = NULL; + kfree(fh->pad); + fh->pad = NULL; #endif } @@ -293,6 +287,34 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh, fie); } + + case VIDIOC_SUBDEV_G_SELECTION: { + struct v4l2_subdev_selection *sel = arg; + + if (sel->which != V4L2_SUBDEV_FORMAT_TRY && + sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + + if (sel->pad >= sd->entity.num_pads) + return -EINVAL; + + return v4l2_subdev_call( + sd, pad, get_selection, subdev_fh, sel); + } + + case VIDIOC_SUBDEV_S_SELECTION: { + struct v4l2_subdev_selection *sel = arg; + + if (sel->which != V4L2_SUBDEV_FORMAT_TRY && + sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + + if (sel->pad >= sd->entity.num_pads) + return -EINVAL; + + return v4l2_subdev_call( + sd, pad, set_selection, subdev_fh, sel); + } #endif default: return v4l2_subdev_call(sd, core, ioctl, cmd, arg); |