Struct Unpacked 

pub struct Unpacked<'a> { /* private fields */ }

The unpack stage: Packed samples widened to a byte per component, one row at a time into a buffer it owns and reuses.

The row this yields is exactly the row the eager pass wrote into its full-size buffer — same table, same rounding, same treatment of a short or absent row — so putting the stage in front of crate::image::Converted changes when the arithmetic runs and not what it produces.

Implementations

impl<'a> Unpacked<'a>

pub fn new(packed: &'a Packed) -> Self

Start walking packed from its first row.

pub fn next_row(&mut self) -> Option<&[u8]>

The next row widened to a byte per component, or None past the bottom.

A row the stream never reached yields zeroes, not the byte /Decode maps a zero sample to: PDFium returns a zeroed output buffer for an absent row without ever running the decode, so the pixels are literal black – the distinction the scanline reader’s Availability carries.

pub fn collect_all(self) -> Box<[u8]>

The whole image unpacked, for the callers that genuinely want it.

The one place the full-size buffer this stage exists to avoid is built: crate::image::Samples::to_pixels, reached by the CLI’s image export, the facade’s edit path and the stencil check.

Trait Implementations

impl<'a> Debug for Unpacked<'a>

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

Formats the value using the given formatter.