Struct BlockHeader 

pub struct BlockHeader {
    pub vendor_id: u32,
    pub descriptor_type: u32,
    pub version_number: u16,
}

DFD block header, containing what type and version of block.

Implementations can skip blocks with unrecognized headers, allowing unknown data to be ignored.

Fields

vendor_id: u32

17-bit organization identifier. 0 is Khronos. PCI SIG IDs use bits 0–15 with bit 16 clear; other IDs are assigned by Khronos starting at 65536.

descriptor_type: u32

15-bit vendor-defined identifier distinguishing between data representations.

version_number: u16

Vendor-defined version, intended for backwards-compatible updates to a descriptor block.

Implementations

impl BlockHeader

pub const LENGTH: usize = 8

Number of bytes in a DFD block header.

pub const BASIC: Self

The header for a Basic block.

pub fn as_bytes(&self, descriptor_block_size: u16) -> [u8; 8]

Serializes the block header to bytes. descriptor_block_size is the total size of the containing Block (header + data).

Trait Implementations

impl Clone for BlockHeader

fn clone(&self) -> BlockHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for BlockHeader

impl Debug for BlockHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for BlockHeader

impl PartialEq for BlockHeader

fn eq(&self, other: &BlockHeader) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BlockHeader