Enum mp4ameta::Data

pub enum Data {
    Reserved(Vec<u8>),
    Utf8(String),
    Utf16(String),
    Jpeg(Vec<u8>),
    Png(Vec<u8>),
    BeSigned(Vec<u8>),
    Bmp(Vec<u8>),
}

An enum that holds different types of data defined by Table 3-5 Well-known data types.

Variants

Reserved(Vec<u8>)

A value containing reserved type data inside a Vec<u8>.

Utf8(String)

A value containing a String decoded from, or to be encoded to utf-8.

Utf16(String)

A value containing a String decoded from, or to be encoded to utf-16.

Jpeg(Vec<u8>)

A value containing jpeg byte data inside a Vec<u8>.

Png(Vec<u8>)

A value containing png byte data inside a Vec<u8>.

BeSigned(Vec<u8>)

A value containing big endian signed integer inside a Vec<u8>.

Bmp(Vec<u8>)

A value containing bmp byte data inside a Vec<u8>.

Implementations

impl Data

pub fn len(&self) -> u64

Returns the length of the raw data in bytes.

pub fn is_empty(&self) -> bool

Returns true if the data is of length 0, false otherwise.

pub const fn is_bytes(&self) -> bool

Returns true if self is of type Self::Reserved or Self::BeSigned, false otherwise.

pub const fn is_string(&self) -> bool

Returns true if self is of type Self::Utf8 or Self::Utf16, false otherwise.

pub const fn is_image(&self) -> bool

Returns true if self is of type Self::Jpeg, Self::Png or Self::Bmp false otherwise.

pub const fn is_reserved(&self) -> bool

Returns true if self is of type Self::Reserved false otherwise.

pub const fn is_utf8(&self) -> bool

Returns true if self is of type Self::Utf8 false otherwise.

pub const fn is_utf16(&self) -> bool

Returns true if self is of type Self::Utf16 false otherwise.

pub const fn is_jpeg(&self) -> bool

Returns true if self is of type Self::Jpeg false otherwise.

pub const fn is_png(&self) -> bool

Returns true if self is of type Self::Png false otherwise.

pub const fn is_be_signed(&self) -> bool

Returns true if self is of type Self::BeSigned false otherwise.

pub const fn is_bmp(&self) -> bool

Returns true if self is of type Self::Bmp false otherwise.

pub fn bytes(&self) -> Option<&[u8]>

Returns a reference to byte data if self is of type Self::Reserved or Self::BeSigned.

pub fn bytes_mut(&mut self) -> Option<&mut Vec<u8>>

Returns a mutable reference to byte data if self is of type Self::Reserved or Self::BeSigned.

pub fn into_bytes(self) -> Option<Vec<u8>>

Consumes self and returns byte data if self is of type Self::Reserved or Self::BeSigned.

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

Returns a reference to a string if self is of type Self::Utf8 or Self::Utf16.

pub fn string_mut(&mut self) -> Option<&mut String>

Returns a mutable reference to a string if self is of type Self::Utf8 or Self::Utf16.

pub fn into_string(self) -> Option<String>

Consumes self and returns a string if self is of type Self::Utf8 or Self::Utf16.

pub fn image(&self) -> Option<ImgRef<'_>>

Returns a reference to an image if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn image_mut(&mut self) -> Option<ImgMut<'_>>

Returns a mutable reference to an image if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn into_image(self) -> Option<ImgBuf>

Consumes self and returns an image if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn image_data(&self) -> Option<&[u8]>

Returns a reference to image data if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn image_data_mut(&mut self) -> Option<&mut Vec<u8>>

Returns a mutable reference to image data if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn into_image_data(self) -> Option<Vec<u8>>

Consumes self and returns image data if self is of type Self::Jpeg, Self::Png or Self::Bmp.

pub fn reserved(&self) -> Option<&[u8]>

Returns a reference to byte data if self is of type Self::Reserved.

pub fn utf8(&self) -> Option<&str>

Returns a reference to a string if self is of type Self::Utf8.

pub fn utf16(&self) -> Option<&str>

Returns a reference to a string if self is of type Self::Utf16.

pub fn jpeg(&self) -> Option<&[u8]>

Returns a reference to image data if self is of type Self::Jpeg.

pub fn png(&self) -> Option<&[u8]>

Returns a reference to image data if self is of type Self::Png.

pub fn be_signed(&self) -> Option<&[u8]>

Returns a reference to byte data if self is of type Self::BeSigned.

pub fn bmp(&self) -> Option<&[u8]>

Returns a reference to byte data if self is of type Self::Bmp.

Trait Implementations

impl Clone for Data

fn clone(&self) -> Data

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Data

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

Formats the value using the given formatter.

impl<T: Into<Vec<u8>>> From<Img<T>> for Data

fn from(image: Img<T>) -> Self

Performs the conversion.

impl PartialEq<Data> for Data

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

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

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

This method tests for !=.

impl Eq for Data

impl StructuralEq for Data

impl StructuralPartialEq for Data