Struct TencBox 

pub struct TencBox {
    pub default_kid: [u8; 16],
    pub is_protected: bool,
    pub per_sample_iv_size: u8,
    pub crypt_byte_block: u8,
    pub skip_byte_block: u8,
    pub constant_iv: Option<[u8; 16]>,
}

Available on crate feature decrypt-cenc only.

Track Encryption Box (tenc) - default encryption parameters for a track.

This box is found in the protection scheme info (sinf/schi) and provides the default KID, IV size, and pattern encryption parameters.

Fields

default_kid: [u8; 16]

The default Key ID for this track.

is_protected: bool

Whether the track is protected (encrypted).

per_sample_iv_size: u8

Per-sample IV size (0 means constant IV is used, typically for CBCS).

crypt_byte_block: u8

Number of 16-byte blocks to encrypt in pattern mode (CENS/CBCS). Only present in tenc version 1.

skip_byte_block: u8

Number of 16-byte blocks to skip in pattern mode (CENS/CBCS). Only present in tenc version 1.

constant_iv: Option<[u8; 16]>

Constant IV for CBCS mode (when per_sample_iv_size is 0).

Implementations

impl TencBox

pub fn from_init(data: &[u8]) -> Result<Option<Self>>

Parse a tenc box from init segment data.

This method navigates through the MP4 box hierarchy to find and parse the tenc box.

pub fn new(box_: &mut ParsedBox<'_>) -> Result<Self>

Parse a tenc box from a ParsedBox.

pub fn default_kid_hex(&self) -> String

Get the default Key ID as a hexadecimal string.

Trait Implementations

impl Clone for TencBox

fn clone(&self) -> TencBox

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TencBox

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

Formats the value using the given formatter.