Documentation/userspace-api/media/v4l/video.rst

Source file repositories/reference/linux-study-clean/Documentation/userspace-api/media/v4l/video.rst

File Facts

System
Linux kernel
Corpus path
Documentation/userspace-api/media/v4l/video.rst
Extension
.rst
Size
2110 bytes
Lines
70
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (-1 == ioctl(fd, VIDIOC_G_INPUT, &index)) {
	perror("VIDIOC_G_INPUT");
	exit(EXIT_FAILURE);
    }

    memset(&input, 0, sizeof(input));
    input.index = index;

    if (-1 == ioctl(fd, VIDIOC_ENUMINPUT, &input)) {
	perror("VIDIOC_ENUMINPUT");
	exit(EXIT_FAILURE);
    }

    printf("Current input: %s\\n", input.name);


Example: Switching to the first video input
===========================================

.. code-block:: c

    int index;

    index = 0;

    if (-1 == ioctl(fd, VIDIOC_S_INPUT, &index)) {
	perror("VIDIOC_S_INPUT");
	exit(EXIT_FAILURE);
    }

Annotation

Implementation Notes