diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/crop.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/crop.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/media/uapi/v4l/crop.rst b/Documentation/media/uapi/v4l/crop.rst index 0913822..4622884 100644 --- a/Documentation/media/uapi/v4l/crop.rst +++ b/Documentation/media/uapi/v4l/crop.rst @@ -15,7 +15,9 @@ offset into a video signal. Applications can use the following API to select an area in the video signal, query the default area and the hardware limits. -.. note:: Despite their name, the :ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>`, +.. note:: + + Despite their name, the :ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>`, :ref:`VIDIOC_G_CROP <VIDIOC_G_CROP>` and :ref:`VIDIOC_S_CROP <VIDIOC_G_CROP>` ioctls apply to input as well as output devices. @@ -38,7 +40,9 @@ support scaling or the :ref:`VIDIOC_G_CROP <VIDIOC_G_CROP>` and :ref:`VIDIOC_S_CROP <VIDIOC_G_CROP>` ioctls. Their size (and position where applicable) will be fixed in this case. -.. note:: All capture and output devices must support the +.. note:: + + All capture and output devices must support the :ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>` ioctl such that applications can determine if scaling takes place. @@ -144,7 +148,9 @@ reopening a device, such that piping data into or out of a device will work without special preparations. More advanced applications should ensure the parameters are suitable before starting I/O. -.. note:: On the next two examples, a video capture device is assumed; +.. note:: + + On the next two examples, a video capture device is assumed; change ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` for other types of device. Example: Resetting the cropping parameters |