Struct exif::Reader

pub struct Reader {}

A struct to parse the Exif attributes and create an Exif instance that holds the results.

Examples

use exif::{In, Reader, Tag};
let file = std::fs::File::open("tests/exif.jpg").unwrap();
let exif = Reader::new().read_from_container(
    &mut std::io::BufReader::new(&file)).unwrap();
let xres = exif.get_field(Tag::XResolution, In::PRIMARY).unwrap();
assert_eq!(xres.display_value().with_unit(&exif).to_string(),
           "72 pixels per inch");

Methods

impl Reader

pub fn new() -> Self

Construct a new Reader.

pub fn read_raw(&self, data: Vec<u8>) -> Result<Exif, Error>

Parses the Exif attributes from raw Exif data. If an error occurred, exif::Error is returned.

pub fn read_from_container<R>(&self, reader: &mut R) -> Result<Exif, Error> where
    R: BufRead + Seek, 

Reads an image file and parses the Exif attributes in it. If an error occurred, exif::Error is returned.

Supported formats are:

• TIFF and some RAW image formats based on it
• JPEG
• HEIF and coding-specific variations including HEIC and AVIF

This method is provided for the convenience even though parsing containers is basically out of the scope of this library.