Struct Format 

pub struct Format {
    pub id: String,
    pub metadata: InfoRecord,
}

Denotes one alternative representation of a media item.

A format is an identity together with an open record of what an extractor observed about it. It fixes no schema: where its bytes rest, what streams it carries, and every quantity selection compares are observations, not fields. An extractor states what it saw, and an interpreter that locates bytes by other means simply states other observations.

Fields

id: String

Identifies the format within one media description.

metadata: InfoRecord

Preserves everything the extractor observed about the format.

Implementations

impl Format

pub fn new(id: String, metadata: InfoRecord) -> Self

Constructs a new Format.

impl Format

pub fn observe(&self, key: &str) -> Option<&InfoValue>

Observes one named value.

pub fn text(&self, key: &str) -> Option<&str>

Observes one named value as text.

pub fn number(&self, key: &str) -> Option<f64>

Observes one named value as a number.

pub fn flag(&self, key: &str) -> bool

Observes one named truth, where an unstated observation denotes falsity.

pub fn extension(&self) -> Option<&str>

Observes the container or filename extension when stated.

pub fn has_audio(&self) -> bool

Observes whether the format carries audio.

pub fn has_video(&self) -> bool

Observes whether the format carries video.

pub fn source(&self) -> Option<&str>

Observes where the format’s bytes rest when the extractor stated it.

Trait Implementations

impl Clone for Format

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Format

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

Formats the value using the given formatter.

impl FormatDescriptionAlg for Format

fn format_identity(&self) -> &str

Observes the identity the extractor gave the format.

fn format_extension(&self) -> Option<&str>

Observes the container or file-name extension.

fn format_streams(&self) -> Option<MediaStreams>

Observes the stream roles the format carries, when it carries any.

fn format_quality(&self) -> Option<&str>

Observes the quality the extractor named.

fn format_height(&self) -> Option<u64>

Observes the picture height in pixels.

fn format_width(&self) -> Option<u64>

Observes the picture width in pixels.

fn format_bitrate(&self) -> Option<u64>

Observes the stated bits per second.

fn format_size(&self) -> Option<u64>

Observes the stated byte count of the whole format.

fn format_codecs(&self) -> Option<&str>

Observes the codecs the format is encoded with.

impl PartialEq for Format

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Format