Struct lodepng::ffi::EncoderSettings

#[repr(C)]
pub struct EncoderSettings {
    pub zlibsettings: CompressSettings,
    pub auto_convert: bool,
    pub filter_palette_zero: bool,
    pub filter_strategy: FilterStrategy,
    pub force_palette: bool,
    pub add_id: bool,
    pub text_compression: bool,
    /* private fields */
}

Fields

zlibsettings: CompressSettings

settings for the zlib encoder, such as window size, …

auto_convert: bool

how to automatically choose output PNG color type, if at all

filter_palette_zero: bool

If true, follows the official PNG heuristic: if the PNG uses a palette or lower than 8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to completely follow the official PNG heuristic, filter_palette_zero must be true and filter_strategy must be FilterStrategy::MINSUM

filter_strategy: FilterStrategy

Which filter strategy to use when not using zeroes due to filter_palette_zero. Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: FilterStrategy::MINSUM

force_palette: bool

force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette). If colortype is 3, PLTE is always created

add_id: bool

add LodePNG identifier and version as a text chunk, for debugging

text_compression: bool

encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks

Implementations

impl EncoderSettings

pub fn new() -> Self

pub fn set_level(&mut self, level: u8)

Zlib compression level 0=none, 9=best

Trait Implementations

impl Clone for EncoderSettings

fn clone(&self) -> EncoderSettings

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EncoderSettings

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

Formats the value using the given formatter.

impl Default for EncoderSettings

fn default() -> Self

Returns the “default value” for a type.

impl Send for EncoderSettings

impl Sync for EncoderSettings