Lines Matching +full:full +full:- +full:scale

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Image Cropping, Insertion and Scaling -- the CROP API
12    <selection-api>`. The new API should be preferred in most cases,
15    equivalent in the SELECTION API. See :ref:`selection-vs-crop` for a
20 abilities cropping and scaling. Some video output devices can scale an
62 .. _crop-scale:
64 .. kernel-figure:: crop.svg
81 :ref:`vbi-hsync`). Vertically ITU-R line numbers of the first field
82 (see ITU R-525 line numbering for :ref:`525 lines <vbi-525>` and for
83 :ref:`625 lines <vbi-625>`), multiplied by two if the driver
112 limitations. It may only scale up or down, support only discrete scaling
136 assuming video will be scaled down from the "full picture" accordingly.
167 .. code-block:: c
175     if (-1 == ioctl (fd, VIDIOC_CROPCAP, &cropcap)) {
186     if (-1 == ioctl (fd, VIDIOC_S_CROP, &crop)
196 .. code-block:: c
203     /* Scale down to 1/4 size of full picture. */
213     if (-1 == ioctl (fd, VIDIOC_S_FMT, &format)) {
219        or if the driver can scale at all. */
226 .. code-block:: c
234     if (-1 == ioctl (fd, VIDIOC_CROPCAP;, &cropcap)) {
244     /* Scale the width and height to 50 % of their original size
254     if (-1 == ioctl (fd, VIDIOC_S_CROP, &crop)
265 .. code-block:: c
277     if (-1 == ioctl (fd, VIDIOC_CROPCAP, &cropcap)) {
285     if (-1 == ioctl (fd, VIDIOC_G_CROP, &crop)) {
298     if (-1 == ioctl (fd, VIDIOC_G_FMT, &format)) {
312     /* Devices following ITU-R BT.601 do not capture
314        we should scale the images to this size. */