Struct EncodeOptions 

pub struct EncodeOptions {
    pub color: ColorMode,
    pub compression: u8,
    pub filter: Filter,
    pub interlace: bool,
}

PNG encode tuning. Mirrors the knobs spng exposes via spng_set_option that the libdeflate backend can honor:

• compression ↔ SPNG_IMG_COMPRESSION_LEVEL,
• filter ↔ SPNG_IMG_FILTER_CHOICE (via Filter::Choice).

spng’s SPNG_IMG_WINDOW_BITS, SPNG_IMG_MEM_LEVEL, and SPNG_IMG_COMPRESSION_STRATEGY have no libdeflate equivalent — libdeflate always uses a full 32 KiB window and chooses its own internal memory/strategy per level — so they are intentionally not exposed rather than silently accepted and ignored.

Fields

color: ColorMode

compression: u8

0 = uncompressed stored blocks, 1..=12 = libdeflate level.

filter: Filter

interlace: bool

Trait Implementations

impl Clone for EncodeOptions

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EncodeOptions

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

Formats the value using the given formatter.

impl Default for EncodeOptions

fn default() -> Self

Returns the “default value” for a type.