Struct Ifd 

pub struct Ifd<'a> {
    pub offset: u32,
    pub order: ByteOrder,
    pub entries: Vec<Entry<'a>>,
    pub sub_ifds: Vec<Ifd<'a>>,
    pub exif: Option<Box<Ifd<'a>>>,
    pub gps: Option<Box<Ifd<'a>>>,
    pub next: u32,
}

An Image File Directory.

Fields

offset: u32

Offset of this IFD relative to the TIFF base.

order: ByteOrder

entries: Vec<Entry<'a>>

sub_ifds: Vec<Ifd<'a>>

SubIFDs (tag 0x14A), in order.

exif: Option<Box<Ifd<'a>>>

gps: Option<Box<Ifd<'a>>>

next: u32

Offset of the next IFD in the chain (0 if none).

Implementations

impl<'a> Ifd<'a>

pub fn get(&self, tag: u16) -> Option<&Entry<'a>>

pub fn has(&self, tag: u16) -> bool

pub fn u32(&self, tag: u16) -> Option<u32>

pub fn f64(&self, tag: u16) -> Option<f64>

pub fn string(&self, tag: u16) -> Option<String>

pub fn req_u32(&self, tag: u16) -> Result<u32>

Required u32 tag.

pub fn width(&self) -> u32

pub fn height(&self) -> u32

pub fn compression(&self) -> u32

pub fn bps(&self) -> u32

pub fn is_reduced_resolution(&self) -> bool

pub fn walk(&self) -> Vec<&Ifd<'a>>

This IFD and all nested IFDs (sub IFDs, EXIF, GPS), depth first.

Trait Implementations

impl<'a> Clone for Ifd<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Ifd<'a>

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

Formats the value using the given formatter.