Enum J_BOOLEAN_PARAM 

#[repr(u32)]
pub enum J_BOOLEAN_PARAM {
    JBOOLEAN_OPTIMIZE_SCANS = 1_745_618_462,
    JBOOLEAN_TRELLIS_QUANT = 3_306_299_443,
    JBOOLEAN_TRELLIS_QUANT_DC = 865_946_636,
    JBOOLEAN_TRELLIS_EOB_OPT = 3_623_303_040,
    JBOOLEAN_USE_LAMBDA_WEIGHT_TBL = 865_973_855,
    JBOOLEAN_USE_SCANS_IN_TRELLIS = 4_253_291_573,
    JBOOLEAN_TRELLIS_Q_OPT = 3_777_684_073,
    JBOOLEAN_OVERSHOOT_DERINGING = 1_061_927_929,
}

These 32-bit GUIDs and the corresponding jpeg_*_get_*_param() jpeg_*_set_*_param() functions allow for extending the libjpeg API without breaking backward ABI compatibility. The actual parameters are stored in the opaque jpeg_comp_master and jpeg_decomp_master structs.

Variants

JBOOLEAN_OPTIMIZE_SCANS = 1_745_618_462

TRUE=optimize progressive coding scans

JBOOLEAN_TRELLIS_QUANT = 3_306_299_443

TRUE=use trellis quantization

JBOOLEAN_TRELLIS_QUANT_DC = 865_946_636

TRUE=use trellis quant for DC coefficient

JBOOLEAN_TRELLIS_EOB_OPT = 3_623_303_040

TRUE=optimize for sequences of EOB

JBOOLEAN_USE_LAMBDA_WEIGHT_TBL = 865_973_855

TRUE=use lambda weighting table

JBOOLEAN_USE_SCANS_IN_TRELLIS = 4_253_291_573

TRUE=use scans in trellis optimization

JBOOLEAN_TRELLIS_Q_OPT = 3_777_684_073

TRUE=optimize quant table in trellis loop

JBOOLEAN_OVERSHOOT_DERINGING = 1_061_927_929

TRUE=preprocess input to reduce ringing of edges on white background

Trait Implementations

impl Clone for J_BOOLEAN_PARAM

fn clone(&self) -> J_BOOLEAN_PARAM

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for J_BOOLEAN_PARAM

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

Formats the value using the given formatter.

impl PartialEq for J_BOOLEAN_PARAM

fn eq(&self, other: &J_BOOLEAN_PARAM) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for J_BOOLEAN_PARAM

impl Eq for J_BOOLEAN_PARAM

impl StructuralPartialEq for J_BOOLEAN_PARAM