pub fn decode<R>(mut input: R) -> Result<(usize, usize, Pixels<R>), Error>
where
    R: Read,
{
    // Parse the magic filetype marker.
    let magic = read_u32(&mut input)?;
    if magic != MAGIC {
        return Err(Error::InvalidFileTypeMarker(magic.to_be_bytes()));
    }

    // Parse the image size
    let width = read_u32(&mut input)? as usize;
    let height = read_u32(&mut input)? as usize;
    let _channels = read_u8(&mut input)?;
    let _color_space = read_u8(&mut input)?;
    if width == 0 || height == 0 {
        return Err(Error::NoImageSize);
    }

    // Return the image info and an iterator to decode the pixels
    Ok((
        width,
        height,
        Pixels {
            input,
            remaining: width * height,
            px: Pixel::rgba(0, 0, 0, 255),
            run: 0,
            lookup: [Pixel::transparent(); 64],
            width,
        },
    ))
}
/// Decode the image encoded in the bytes provided by `input`. The return value
/// is the image's `width`, `height`, and an iterator to parse the actual pixel
/// data. If you just want to read the image size, you can ignore the iterator.
///
/// The amount of pixels on a successful decode will always be `width * height`,
/// so you can use those values to pre-allocate your pixel buffer if you want.
Decode the image encoded in the bytes provided by `input`. The return value
is the image's `width`, `height`, and an iterator to parse the actual pixel
data. If you just want to read the image size, you can ignore the iterator.

The amount of pixels on a successful decode will always be `width * height`,
so you can use those values to pre-allocate your pixel buffer if you want.
Decode the image encoded in the bytes provided by ` input ` . The return value is the image ' s ` width ` ` height ` and an iterator to parse the actual pixel data . If you just want to read the image size you can ignore the iterator . The amount of pixels on a successful decode will always be ` width * height ` so you can use those values to pre - allocate your pixel buffer if you want .
pub fn decode<R>(mut input: R) -> Result<(usize, usize, Pixels<R>), Error>
where
    R: Read,
{
    // Parse the magic filetype marker.
    let magic = read_u32(&mut input)?;
    if magic != MAGIC {
        return Err(Error::InvalidFileTypeMarker(magic.to_be_bytes()));
    }
    // Parse the image size
    let width = read_u32(&mut input)? as usize;
    let height = read_u32(&mut input)? as usize;
    let _channels = read_u8(&mut input)?;
    let _color_space = read_u8(&mut input)?;
    if width == 0 || height == 0 {
        return Err(Error::NoImageSize);
    }
    // Return the image info and an iterator to decode the pixels
    Ok((
        width,
        height,
        Pixels {
            input,
            remaining: width * height,
            px: Pixel::rgba(0, 0, 0, 255),
            run: 0,
            lookup: [Pixel::transparent(); 64],
            width,
        },
    ))
}
pub fn decode < R > ( mut input : R ) -> Result < ( usize , usize , Pixels < R > ) , Error > where R : Read , { // Parse the magic filetype marker. let magic = read_u32 ( & mut input ) ? ; if magic != MAGIC { return Err ( Error :: InvalidFileTypeMarker ( magic . to_be_bytes ( ) ) ) ; } // Parse the image size let width = read_u32 ( & mut input ) ? as usize ; let height = read_u32 ( & mut input ) ? as usize ; let _channels = read_u8 ( & mut input ) ? ; let _color_space = read_u8 ( & mut input ) ? ; if width == 0 || height == 0 { return Err ( Error :: NoImageSize ) ; } // Return the image info and an iterator to decode the pixels Ok ( ( width , height , Pixels { input , remaining : width * height , px : Pixel :: rgba ( 0 , 0 , 0 , 255 ) , run : 0 , lookup : [ Pixel :: transparent ( ) ; 64 ] , width , } , ) ) }
Decode the image encoded in the bytes provided by `input`.
Decode the image encoded in the bytes provided by ` input ` .
input
R
input
R