[−][src]Struct image::pnm::PNMHeader
Stores the complete header data of a file.
Internally, provides mechanisms for lossless reencoding. After reading a file with the decoder it is possible to recover the header and construct an encoder. Using the encoder on the just loaded image should result in a byte copy of the original file (for single image pnms without additional trailing data).
Methods
impl PNMHeader[src]
impl PNMHeaderpub fn subtype(&self) -> PNMSubtype[src]
pub fn subtype(&self) -> PNMSubtypeRetrieve the format subtype from which the header was created.
pub fn width(&self) -> u32[src]
pub fn width(&self) -> u32The width of the image this header is for.
pub fn height(&self) -> u32[src]
pub fn height(&self) -> u32The height of the image this header is for.
pub fn maximal_sample(&self) -> u32[src]
pub fn maximal_sample(&self) -> u32The biggest value a sample can have. In other words, the colour resolution.
pub fn as_bitmap(&self) -> Option<&BitmapHeader>[src]
pub fn as_bitmap(&self) -> Option<&BitmapHeader>Retrieve the underlying bitmap header if any
pub fn as_graymap(&self) -> Option<&GraymapHeader>[src]
pub fn as_graymap(&self) -> Option<&GraymapHeader>Retrieve the underlying graymap header if any
pub fn as_pixmap(&self) -> Option<&PixmapHeader>[src]
pub fn as_pixmap(&self) -> Option<&PixmapHeader>Retrieve the underlying pixmap header if any
pub fn as_arbitrary(&self) -> Option<&ArbitraryHeader>[src]
pub fn as_arbitrary(&self) -> Option<&ArbitraryHeader>Retrieve the underlying arbitrary header if any
pub fn write(&self, writer: &mut Write) -> Result<()>[src]
pub fn write(&self, writer: &mut Write) -> Result<()>Write the header back into a binary stream
Trait Implementations
impl From<BitmapHeader> for PNMHeader[src]
impl From<BitmapHeader> for PNMHeaderfn from(header: BitmapHeader) -> Self[src]
fn from(header: BitmapHeader) -> SelfPerforms the conversion.
impl From<GraymapHeader> for PNMHeader[src]
impl From<GraymapHeader> for PNMHeaderfn from(header: GraymapHeader) -> Self[src]
fn from(header: GraymapHeader) -> SelfPerforms the conversion.
impl From<PixmapHeader> for PNMHeader[src]
impl From<PixmapHeader> for PNMHeaderfn from(header: PixmapHeader) -> Self[src]
fn from(header: PixmapHeader) -> SelfPerforms the conversion.
impl From<ArbitraryHeader> for PNMHeader[src]
impl From<ArbitraryHeader> for PNMHeaderfn from(header: ArbitraryHeader) -> Self[src]
fn from(header: ArbitraryHeader) -> SelfPerforms the conversion.
Auto Trait Implementations
Blanket Implementations
impl<T> From for T[src]
impl<T> From for Timpl<T, U> Into for T where
U: From<T>, [src]
impl<T, U> Into for T where
U: From<T>, impl<T, U> TryFrom for T where
T: From<U>, [src]
impl<T, U> TryFrom for T where
T: From<U>, type Error = !
try_from)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>try_from)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized, [src]
impl<T> Borrow for T where
T: ?Sized, ⓘImportant traits for &'a mut Rfn borrow(&self) -> &T[src]
fn borrow(&self) -> &TImmutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
impl<T, U> TryInto for T where
U: TryFrom<T>, type Error = <U as TryFrom<T>>::Error
try_from)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>try_from)Performs the conversion.
impl<T> BorrowMut for T where
T: ?Sized, [src]
impl<T> BorrowMut for T where
T: ?Sized, ⓘImportant traits for &'a mut Rfn borrow_mut(&mut self) -> &mut T[src]
fn borrow_mut(&mut self) -> &mut TMutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Any for T where
T: 'static + ?Sized, fn get_type_id(&self) -> TypeId[src]
fn get_type_id(&self) -> TypeId🔬 This is a nightly-only experimental API. (get_type_id)
this method will likely be replaced by an associated static
Gets the TypeId of self. Read more
impl<T> SetParameter for T[src]
impl<T> SetParameter for T