Struct StreamEncoder 

pub struct StreamEncoder { /* private fields */ }

Flate (zlib) stream encoder.

The encoder keeps the underlying flate2::Compress state across calls and resets it per stream, so a single instance can compress many small streams (one per content stream, for instance) without paying the zlib state initialisation cost every time. This is roughly 4-6x faster than creating a fresh encoder per stream on typical tiny PDF content streams.

Implementations

impl StreamEncoder

pub fn new() -> Self

pub fn encode( &mut self, data: &[u8], filter: StreamFilter, ) -> PdfResult<Vec<u8>>

pub fn encode_with_compression( &mut self, data: &[u8], filter: StreamFilter, level: u32, ) -> PdfResult<Vec<u8>>

Like StreamEncoder::encode but with an explicit zlib level (0-9) for the flate filter; other filters ignore the level.

Trait Implementations

impl Default for StreamEncoder

fn default() -> Self

Returns the “default value” for a type.