Struct PageHeader 

pub struct PageHeader {

    pub page: u8,
    pub s1: u8,
    pub s2: u8,
    pub s3: u8,
    pub s4: u8,
    pub erase_page: bool,
    pub newsflash: bool,
    pub subtitle: bool,
    pub suppress_header: bool,
    pub update_indicator: bool,
    pub interrupted_sequence: bool,
    pub inhibit_display: bool,
    pub magazine_serial: bool,
    pub national_option: NationalOption,
}

Available on crate feature teletext only.

A decoded page header packet (Y = 0, ETSI EN 300 706 §9.3.1): page address, sub-code, and all eleven control bits (Table 2).

Fields

page: u8

Page number, Pt << 4 | Pu (§9.3.1.1; both nibbles 0x0-0xF).

s1: u8

Page sub-code element S1 (§9.3.1.2, byte 8; 0x0-0xF).

s2: u8

Page sub-code element S2 (byte 9 bits 2/4/6; 0x0-0x7).

s3: u8

Page sub-code element S3 (byte 10; 0x0-0xF).

s4: u8

Page sub-code element S4 (byte 11 bits 2/4; 0x0-0x3).

erase_page: bool

C4 Erase Page.

newsflash: bool

C5 Newsflash.

subtitle: bool

C6 Subtitle.

suppress_header: bool

C7 Suppress Header (row 0 not displayed).

update_indicator: bool

C8 Update Indicator.

interrupted_sequence: bool

C9 Interrupted Sequence.

inhibit_display: bool

C10 Inhibit Display (rows 1-24 not displayed).

magazine_serial: bool

C11 Magazine Serial (true = serial mode, false = parallel mode).

national_option: NationalOption

C12/C13/C14 National Option Character Subset.

Implementations

impl PageHeader

pub fn parse(txt_data_block: &[u8; 42]) -> Option<PageHeader>

Decode a page header from the 8 Hamming-8/4 bytes at txt_data_block[2..10] (EN 300 706 bytes 6-13 — the 2 bytes of packet address precede these). Returns None if any of the 8 bytes is an uncorrectable Hamming-8/4 byte.

Trait Implementations

impl Clone for PageHeader

fn clone(&self) -> PageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PageHeader

impl Debug for PageHeader

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

Formats the value using the given formatter.

impl Eq for PageHeader

impl PartialEq for PageHeader

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PageHeader