include/linux/usb/audio-v3.h

File Facts

System

Linux kernel

Corpus path

include/linux/usb/audio-v3.h

Extension

.h

Size

14270 bytes

Lines

455

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.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct uac3_hc_descriptor_header
• struct uac3_cluster_header_descriptor
• struct uac3_cluster_segment_descriptor
• struct uac3_cluster_end_segment_descriptor
• struct uac3_cluster_information_segment_descriptor
• struct uac3_ac_header_descriptor
• struct uac3_input_terminal_descriptor
• struct uac3_output_terminal_descriptor
• struct uac3_feature_unit_descriptor
• struct uac3_clock_source_descriptor
• struct uac3_clock_selector_descriptor
• struct uac3_clock_multiplier_descriptor
• struct uac3_power_domain_descriptor
• struct uac3_as_header_descriptor
• struct uac3_iso_endpoint_descriptor
• struct uac3_insertion_ctl_blk
• struct uac3_interrupt_data_msg

Annotated Snippet

struct uac3_hc_descriptor_header {
	__le16 wLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__le16 wDescriptorID;
} __attribute__ ((packed));

/* 4.3.1 CLUSTER DESCRIPTOR HEADER */
struct uac3_cluster_header_descriptor {
	__le16 wLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__le16 wDescriptorID;
	__u8 bNrChannels;
} __attribute__ ((packed));

/* 4.3.2.1 SEGMENTS */
struct uac3_cluster_segment_descriptor {
	__le16 wLength;
	__u8 bSegmentType;
	/* __u8[0]; segment-specific data */
} __attribute__ ((packed));

/* 4.3.2.1.1 END SEGMENT */
struct uac3_cluster_end_segment_descriptor {
	__le16 wLength;
	__u8 bSegmentType;		/* Constant END_SEGMENT */
} __attribute__ ((packed));

/* 4.3.2.1.3.1 INFORMATION SEGMENT */
struct uac3_cluster_information_segment_descriptor {
	__le16 wLength;
	__u8 bSegmentType;
	__u8 bChPurpose;
	__u8 bChRelationship;
	__u8 bChGroupID;
} __attribute__ ((packed));

/* 4.5.2 CLASS-SPECIFIC AC INTERFACE DESCRIPTOR */
struct uac3_ac_header_descriptor {
	__u8 bLength;			/* 10 */
	__u8 bDescriptorType;		/* CS_INTERFACE descriptor type */
	__u8 bDescriptorSubtype;	/* HEADER descriptor subtype */
	__u8 bCategory;

	/* includes Clock Source, Unit, Terminal, and Power Domain desc. */
	__le16 wTotalLength;

	__le32 bmControls;
} __attribute__ ((packed));

/* 4.5.2.1 INPUT TERMINAL DESCRIPTOR */
struct uac3_input_terminal_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bTerminalID;
	__le16 wTerminalType;
	__u8 bAssocTerminal;
	__u8 bCSourceID;
	__le32 bmControls;
	__le16 wClusterDescrID;
	__le16 wExTerminalDescrID;
	__le16 wConnectorsDescrID;
	__le16 wTerminalDescrStr;
} __attribute__((packed));

/* 4.5.2.2 OUTPUT TERMINAL DESCRIPTOR */
struct uac3_output_terminal_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bTerminalID;
	__le16 wTerminalType;
	__u8 bAssocTerminal;
	__u8 bSourceID;
	__u8 bCSourceID;
	__le32 bmControls;
	__le16 wExTerminalDescrID;
	__le16 wConnectorsDescrID;
	__le16 wTerminalDescrStr;
} __attribute__((packed));

/* 4.5.2.7 FEATURE UNIT DESCRIPTOR */
struct uac3_feature_unit_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bUnitID;
	__u8 bSourceID;

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct uac3_hc_descriptor_header`, `struct uac3_cluster_header_descriptor`, `struct uac3_cluster_segment_descriptor`, `struct uac3_cluster_end_segment_descriptor`, `struct uac3_cluster_information_segment_descriptor`, `struct uac3_ac_header_descriptor`, `struct uac3_input_terminal_descriptor`, `struct uac3_output_terminal_descriptor`, `struct uac3_feature_unit_descriptor`, `struct uac3_clock_source_descriptor`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.

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.