Documentation/userspace-api/media/dvb/legacy_dvb_video.rst

Source file repositories/reference/linux-study-clean/Documentation/userspace-api/media/dvb/legacy_dvb_video.rst

File Facts

System: Linux kernel
Corpus path: Documentation/userspace-api/media/dvb/legacy_dvb_video.rst
Extension: .rst
Size: 43670 bytes
Lines: 2431
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.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

fcntl.h

Detected Declarations

struct video_command
struct video_event
struct video_status
struct video_still_picture

Annotated Snippet

struct video_command {
	__u32 cmd;
	__u32 flags;
	union {
	    struct {
		__u64 pts;
	    } stop;

	    struct {
		__s32 speed;
		__u32 format;
	    } play;

	    struct {
		__u32 data[16];
	    } raw;
	};
    };


Variables
~~~~~~~~~

.. flat-table::
    :header-rows:  0
    :stub-columns: 0

    -  ..

       -  ``__u32 cmd``

       -  `Decoder command`_

    -  ..

       -  ``__u32 flags``

       -  Flags for the `Decoder command`_.

    -  ..

       -  ``struct stop``

       -  ``__u64 pts``

       -  MPEG PTS

    -  ..

       -  :rspan:`5` ``stuct play``

       -  :rspan:`4` ``__s32 speed``

       -   0 or 1000 specifies normal speed,

    -  ..

       -   1:  specifies forward single stepping,

    -  ..

       -   -1: specifies backward single stepping,

    -  ..

       -   >1: playback at speed / 1000 of the normal speed

    -  ..

       -   <-1: reverse playback at ( -speed / 1000 ) of the normal speed.

Annotation

Immediate include surface: `fcntl.h`.
Detected declarations: `struct video_command`, `struct video_event`, `struct video_status`, `struct video_still_picture`.
Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.