Struct JpegsaveTargetOptions 

pub struct JpegsaveTargetOptions {

    pub q: i32,
    pub optimize_coding: bool,
    pub interlace: bool,
    pub trellis_quant: bool,
    pub overshoot_deringing: bool,
    pub optimize_scans: bool,
    pub quant_table: i32,
    pub subsample_mode: ForeignSubsample,
    pub restart_interval: i32,
    pub keep: ForeignKeep,
    pub background: Vec<f64>,
    pub page_height: i32,
    pub profile: String,
}

Options for jpegsave_target operation

Fields

q: i32

q: i32 -> Q factor min: 1, max: 100, default: 75

optimize_coding: bool

optimize_coding: bool -> Compute optimal Huffman coding tables default: false

interlace: bool

interlace: bool -> Generate an interlaced (progressive) jpeg default: false

trellis_quant: bool

trellis_quant: bool -> Apply trellis quantisation to each 8x8 block default: false

overshoot_deringing: bool

overshoot_deringing: bool -> Apply overshooting to samples with extreme values default: false

optimize_scans: bool

optimize_scans: bool -> Split spectrum of DCT coefficients into separate scans default: false

quant_table: i32

quant_table: i32 -> Use predefined quantization table with given index min: 0, max: 8, default: 0

subsample_mode: ForeignSubsample

subsample_mode: ForeignSubsample -> Select chroma subsample operation mode Auto -> VIPS_FOREIGN_SUBSAMPLE_AUTO = 0 [DEFAULT] On -> VIPS_FOREIGN_SUBSAMPLE_ON = 1 Off -> VIPS_FOREIGN_SUBSAMPLE_OFF = 2 Last -> VIPS_FOREIGN_SUBSAMPLE_LAST = 3

restart_interval: i32

restart_interval: i32 -> Add restart markers every specified number of mcu min: 0, max: 2147483647, default: 0

keep: ForeignKeep

keep: ForeignKeep -> Which metadata to retain None -> VIPS_FOREIGN_KEEP_NONE = 0 Exif -> VIPS_FOREIGN_KEEP_EXIF = 1 Xmp -> VIPS_FOREIGN_KEEP_XMP = 2 Iptc -> VIPS_FOREIGN_KEEP_IPTC = 4 Icc -> VIPS_FOREIGN_KEEP_ICC = 8 Other -> VIPS_FOREIGN_KEEP_OTHER = 16 All -> VIPS_FOREIGN_KEEP_ALL = 31 [DEFAULT]

background: Vec<f64>

background: Vec<f64> -> Background value

page_height: i32

page_height: i32 -> Set page height for multipage save min: 0, max: 10000000, default: 0

profile: String

profile: String -> Filename of ICC profile to embed

Trait Implementations

impl Clone for JpegsaveTargetOptions

fn clone(&self) -> JpegsaveTargetOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JpegsaveTargetOptions

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

Formats the value using the given formatter.

impl Default for JpegsaveTargetOptions

fn default() -> Self

Returns the “default value” for a type.