include/uapi/linux/media.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/media.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/media.h
Extension
.h
Size
13246 bytes
Lines
440
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct media_device_info {
	char driver[16];
	char model[32];
	char serial[40];
	char bus_info[32];
	__u32 media_version;
	__u32 hw_revision;
	__u32 driver_version;
	__u32 reserved[31];
};

/*
 * Base number ranges for entity functions
 *
 * NOTE: Userspace should not rely on these ranges to identify a group
 * of function types, as newer functions can be added with any name within
 * the full u32 range.
 *
 * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not
 * change this, this is for backwards compatibility. When adding new
 * functions always use MEDIA_ENT_F_BASE.
 */
#define MEDIA_ENT_F_BASE			0x00000000
#define MEDIA_ENT_F_OLD_BASE			0x00010000
#define MEDIA_ENT_F_OLD_SUBDEV_BASE		0x00020000

/*
 * Initial value to be used when a new entity is created
 * Drivers should change it to something useful.
 */
#define MEDIA_ENT_F_UNKNOWN			MEDIA_ENT_F_BASE

/*
 * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order
 * to preserve backward compatibility. Drivers must change to the proper
 * subdev type before registering the entity.
 */
#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN		MEDIA_ENT_F_OLD_SUBDEV_BASE

/*
 * DVB entity functions
 */
#define MEDIA_ENT_F_DTV_DEMOD			(MEDIA_ENT_F_BASE + 0x00001)
#define MEDIA_ENT_F_TS_DEMUX			(MEDIA_ENT_F_BASE + 0x00002)
#define MEDIA_ENT_F_DTV_CA			(MEDIA_ENT_F_BASE + 0x00003)
#define MEDIA_ENT_F_DTV_NET_DECAP		(MEDIA_ENT_F_BASE + 0x00004)

/*
 * I/O entity functions
 */
#define MEDIA_ENT_F_IO_V4L			(MEDIA_ENT_F_OLD_BASE + 1)
#define MEDIA_ENT_F_IO_DTV			(MEDIA_ENT_F_BASE + 0x01001)
#define MEDIA_ENT_F_IO_VBI			(MEDIA_ENT_F_BASE + 0x01002)
#define MEDIA_ENT_F_IO_SWRADIO			(MEDIA_ENT_F_BASE + 0x01003)

/*
 * Sensor functions
 */
#define MEDIA_ENT_F_CAM_SENSOR			(MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
#define MEDIA_ENT_F_FLASH			(MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
#define MEDIA_ENT_F_LENS			(MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)

/*
 * Digital TV, analog TV, radio and/or software defined radio tuner functions.
 *
 * It is a responsibility of the master/bridge drivers to add connectors
 * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
 * may require the usage of separate I2C chips to decode analog TV signals,
 * when the master/bridge chipset doesn't have its own TV standard decoder.
 * On such cases, the IF-PLL staging is mapped via one or two entities:
 * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
 */
#define MEDIA_ENT_F_TUNER			(MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)

/*
 * Analog TV IF-PLL decoder functions
 *
 * It is a responsibility of the master/bridge drivers to create links
 * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER.
 */
#define MEDIA_ENT_F_IF_VID_DECODER		(MEDIA_ENT_F_BASE + 0x02001)
#define MEDIA_ENT_F_IF_AUD_DECODER		(MEDIA_ENT_F_BASE + 0x02002)

/*
 * Audio entity functions
 */
#define MEDIA_ENT_F_AUDIO_CAPTURE		(MEDIA_ENT_F_BASE + 0x03001)
#define MEDIA_ENT_F_AUDIO_PLAYBACK		(MEDIA_ENT_F_BASE + 0x03002)
#define MEDIA_ENT_F_AUDIO_MIXER			(MEDIA_ENT_F_BASE + 0x03003)

Annotation

Implementation Notes