Enum gstreamer_video::VideoCaptionType

#[non_exhaustive]
pub enum VideoCaptionType {
    Unknown,
    Cea608Raw,
    Cea608S3341a,
    Cea708Raw,
    Cea708Cdp,
    // some variants omitted
}

This is supported on crate feature v1_16 only.

The various known types of Closed Caption (CC).

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unknown

Unknown type of CC

Cea608Raw

CEA-608 as byte pairs. Note that this format is not recommended since is does not specify to which field the caption comes from and therefore assumes it comes from the first field (and that there is no information on the second field). Use Self::Cea708Raw if you wish to store CEA-608 from two fields and prefix each byte pair with 0xFC for the first field and 0xFD for the second field.

Cea608S3341a

CEA-608 as byte triplets as defined in SMPTE S334-1 Annex A. The second and third byte of the byte triplet is the raw CEA608 data, the first byte is a bitfield: The top/7th bit is 0 for the second field, 1 for the first field, bit 6 and 5 are 0 and bits 4 to 0 are a 5 bit unsigned integer that represents the line offset relative to the base-line of the original image format (line 9 for 525-line field 1, line 272 for 525-line field 2, line 5 for 625-line field 1 and line 318 for 625-line field 2).

Cea708Raw

CEA-708 as cc_data byte triplets. They can also contain 608-in-708 and the first byte of each triplet has to be inspected for detecting the type.

Cea708Cdp

CEA-708 (and optionally CEA-608) in a CDP (Caption Distribution Packet) defined by SMPTE S-334-2. Contains the whole CDP (starting with 0x9669).

Implementations

impl VideoCaptionType

pub fn from_caps(caps: &Caps) -> VideoCaptionType

pub fn to_caps(self) -> Option<Caps>

Trait Implementations

impl Clone for VideoCaptionType

fn clone(&self) -> VideoCaptionType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VideoCaptionType

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

Formats the value using the given formatter.

impl<'a> FromValue<'a> for VideoCaptionType

type Checker = GenericValueTypeChecker<Self>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl Hash for VideoCaptionType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for VideoCaptionType

fn cmp(&self, other: &VideoCaptionType) -> Ordering

This method returns an Ordering between self and other.

#[must_use]

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<VideoCaptionType> for VideoCaptionType

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<VideoCaptionType> for VideoCaptionType

fn partial_cmp(&self, other: &VideoCaptionType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for VideoCaptionType

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for VideoCaptionType

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

impl ValueType for VideoCaptionType

type Type = Self

Type to get the Type from.

impl Copy for VideoCaptionType

impl Eq for VideoCaptionType

impl StructuralEq for VideoCaptionType

impl StructuralPartialEq for VideoCaptionType