Struct Decoder 

pub struct Decoder<R> { /* private fields */ }

JPEG decoder

Implementations

impl<R: Read> Decoder<R>

pub fn new(reader: R) -> Self

Creates a new Decoder using the reader reader.

Examples found in repository

examples/scan.rs (line 17)

fn main() {
    let mut args = env::args().skip(1);
    let input_path = args.next().unwrap_or_else(|| usage());
    let input_file = fs::read(input_path).expect("The specified input file could not be opened");

    let mut decoder = jpeg::Decoder::new(input_file.as_slice());
    let markers = decoder.decode().expect("Decode error");
    for m in markers {
        if let jpeg::MarkerData::Scan(s) = m.marker {
            println!("{}: {}-{}, {}, {};", s.component_indices.into_iter().map(|c| c.to_string()).collect::<Vec<_>>().join(","),
                s.spectral_selection.start(), s.spectral_selection.end(),
                s.successive_approximation_high, s.successive_approximation_low,
            );
        }
    }
}

pub fn decode(&mut self) -> Result<Vec<MarkerPosition>>

Examples found in repository

examples/scan.rs (line 18)

fn main() {
    let mut args = env::args().skip(1);
    let input_path = args.next().unwrap_or_else(|| usage());
    let input_file = fs::read(input_path).expect("The specified input file could not be opened");

    let mut decoder = jpeg::Decoder::new(input_file.as_slice());
    let markers = decoder.decode().expect("Decode error");
    for m in markers {
        if let jpeg::MarkerData::Scan(s) = m.marker {
            println!("{}: {}-{}, {}, {};", s.component_indices.into_iter().map(|c| c.to_string()).collect::<Vec<_>>().join(","),
                s.spectral_selection.start(), s.spectral_selection.end(),
                s.successive_approximation_high, s.successive_approximation_low,
            );
        }
    }
}