Struct png::Reader[−][src]

pub struct Reader<R: Read> { /* fields omitted */ }

Expand description

PNG reader (mostly high-level interface)

Provides a high level that iterates over lines or whole images.

Implementations

Decodes the next frame into buf

pub fn next_row(&mut self) -> Result<Option<&[u8 ]>, DecodingError>

[src]

Returns the next processed row of the image

pub fn next_interlaced_row(
&mut self
) -> Result<Option<(&[u8 ], Option<(u8, u32, u32 )>)>, DecodingError>

[src]

Returns the next processed row of the image

pub fn output_color_type(&mut self) -> (ColorType, BitDepth )

[src]

Returns the color type and the number of bits per sample of the data returned by Reader::next_row and Reader::frames`.

pub fn output_buffer_size(&self) -> usize

[src]

Returns the number of bytes required to hold a deinterlaced image frame that is decoded using the given input transformations.

pub fn output_line_size(&self, width: u32) -> usize

[src]

Returns the number of bytes required to hold a deinterlaced row.

Auto Trait Implementations

impl<R> RefUnwindSafe for Reader<R> where
R: RefUnwindSafe,

impl<R> Send for Reader<R> where
R: Send,

impl<R> Sync for Reader<R> where
R: Sync,

impl<R> Unpin for Reader<R> where
R: Unpin,

impl<R> UnwindSafe for Reader<R> where
R: UnwindSafe,

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

[src]

pub fn type_id(&self) -> TypeId

[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

[src]

pub fn borrow(&self) -> &T

[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

[src]

pub fn borrow_mut(&mut self) -> &mut T

[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

[src]

pub fn from(t: T) -> T

[src]

Performs the conversion.

impl<T, U> Into for T where
U: From<T>,

[src]

pub fn into(self) -> U

[src]

Performs the conversion.

impl<T, U> TryFrom for T where
U: Into<T>,

[src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

[src]

Performs the conversion.

impl<T, U> TryInto for T where
U: TryFrom<T>,

[src]

type Error = >::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, >::Error>

[src]

Performs the conversion.

Struct png::Reader[−][src]

Implementations

impl<R: Read> Reader<R>

pub fn info(&self) -> &Info

pub fn next_frame(&mut self, buf: &mut [u8 ]) -> Result<(), DecodingError>

pub fn next_row(&mut self) -> Result<Option<&[u8 ]>, DecodingError>

pub fn next_interlaced_row(
&mut self
) -> Result<Option<(&[u8 ], Option<(u8, u32, u32 )>)>, DecodingError>

pub fn output_color_type(&mut self) -> (ColorType, BitDepth )

pub fn output_buffer_size(&self) -> usize

pub fn output_line_size(&self, width: u32) -> usize

Auto Trait Implementations

impl<R> RefUnwindSafe for Reader<R> where
R: RefUnwindSafe,

impl<R> Send for Reader<R> where
R: Send,

impl<R> Sync for Reader<R> where
R: Sync,

impl<R> Unpin for Reader<R> where
R: Unpin,

impl<R> UnwindSafe for Reader<R> where
R: UnwindSafe,

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

pub fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct png::Reader[−][src]

Implementations

impl<R: Read> Reader<R>

pub fn info(&self) -> &Info

pub fn next_frame(&mut self, buf: &mut [u8]) -> Result<(), DecodingError>

pub fn next_row(&mut self) -> Result<Option<&[u8]>, DecodingError>

pub fn next_interlaced_row( &mut self) -> Result<Option<(&[u8], Option<(u8, u32, u32)>)>, DecodingError>

pub fn output_color_type(&mut self) -> (ColorType, BitDepth)

pub fn output_buffer_size(&self) -> usize

pub fn output_line_size(&self, width: u32) -> usize

Auto Trait Implementations

impl<R> RefUnwindSafe for Reader<R> where R: RefUnwindSafe,

impl<R> Send for Reader<R> where R: Send,

impl<R> Sync for Reader<R> where R: Sync,

impl<R> Unpin for Reader<R> where R: Unpin,

impl<R> UnwindSafe for Reader<R> where R: UnwindSafe,

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

pub fn next_frame(&mut self, buf: &mut [u8 ]) -> Result<(), DecodingError>

pub fn next_row(&mut self) -> Result<Option<&[u8 ]>, DecodingError>

pub fn next_interlaced_row(
&mut self
) -> Result<Option<(&[u8 ], Option<(u8, u32, u32 )>)>, DecodingError>

pub fn output_color_type(&mut self) -> (ColorType, BitDepth )

impl<R> RefUnwindSafe for Reader<R> where
R: RefUnwindSafe,

impl<R> Send for Reader<R> where
R: Send,

impl<R> Sync for Reader<R> where
R: Sync,

impl<R> Unpin for Reader<R> where
R: Unpin,

impl<R> UnwindSafe for Reader<R> where
R: UnwindSafe,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,