Struct In

pub struct In(pub u16);

An IFD number.

The IFDs are indexed from 0. The 0th IFD is for the primary image and the 1st one is for the thumbnail. Two associated constants, In::PRIMARY and In::THUMBNAIL, are defined for them respectively.

Examples

use exif::In;
assert_eq!(In::PRIMARY.index(), 0);
assert_eq!(In::THUMBNAIL.index(), 1);

Tuple Fields

0: u16

Implementations

impl In

pub const PRIMARY: In = _

pub const THUMBNAIL: In = _

pub fn index(self) -> u16

Returns the IFD number.

Examples found in repository

examples/dumpexif.rs (line 61)

fn dump_file(path: &Path) -> Result<(), exif::Error> {
    let file = File::open(path)?;

    // To parse strictly:
    // let exif = exif::Reader::new()
    //     .read_from_container(&mut BufReader::new(&file))?;

    // To parse with continue-on-error mode:
    let exif = exif::Reader::new()
        .continue_on_error(true)
        .read_from_container(&mut BufReader::new(&file))
        .or_else(|e| e.distill_partial_result(|errors| {
            eprintln!("{}: {} warning(s)", path.display(), errors.len());
            errors.iter().for_each(|e| eprintln!("  {}", e));
        }))?;

    println!("{}", path.display());
    for f in exif.fields() {
        println!("  {}/{}: {}",
                 f.ifd_num.index(), f.tag,
                 f.display_value().with_unit(&exif));
        println!("      {:?}", f.value);
    }
    Ok(())
}

Trait Implementations

impl Clone for In

fn clone(&self) -> In

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for In

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

Formats the value using the given formatter.

impl Display for In

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

Formats the value using the given formatter.

impl Hash for In

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for In

fn cmp(&self, other: &In) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for In

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for In

fn partial_cmp(&self, other: &In) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for In

impl Eq for In

impl StructuralPartialEq for In