diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/crop.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/crop.rst | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/Documentation/media/uapi/v4l/crop.rst b/Documentation/media/uapi/v4l/crop.rst index ed43b36c51d80..51b19491c3021 100644 --- a/Documentation/media/uapi/v4l/crop.rst +++ b/Documentation/media/uapi/v4l/crop.rst @@ -147,8 +147,10 @@ ensure the parameters are suitable before starting I/O. **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 +========================================== + .. code-block:: c - :caption: Example 1.11. Resetting the cropping parameters struct v4l2_cropcap cropcap; struct v4l2_crop crop; @@ -173,8 +175,11 @@ change ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` for other types of device. exit (EXIT_FAILURE); } + +Example: Simple downscaling +=========================== + .. code-block:: c - :caption: Example 1.12. Simple downscaling struct v4l2_cropcap cropcap; struct v4l2_format format; @@ -199,10 +204,12 @@ change ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` for other types of device. /* We could check the actual image size now, the actual scaling factor or if the driver can scale at all. */ +Example: Selecting an output area +================================= + **NOTE:** This example assumes an output device. .. code-block:: c - :caption: Example 1.13. Selecting an output area struct v4l2_cropcap cropcap; struct v4l2_crop crop; @@ -236,10 +243,12 @@ change ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` for other types of device. exit (EXIT_FAILURE); } +Example: Current scaling factor and pixel aspect +================================================ + **NOTE:** This example assumes a video capture device. .. code-block:: c - :caption: Example 1.14. Current scaling factor and pixel aspect struct v4l2_cropcap cropcap; struct v4l2_crop crop; |