Enum Layout 

pub enum Layout {
    V2,
    V3,
    V4,
}

Stream units for one sample generation. V4 alone alternates stereo channel words instead of fields.

Variants

V2

.nsmp: 3-byte words, 24-field cells, a 51-byte stroke header.

V3

.nsmp3: 4-byte words, 32-field cells, a 68-byte stroke header.

V4

.nsmp4: Layout::V3’s units, and a word stream per channel on stereo.

Implementations

impl Layout

pub fn from_version(version: u32) -> Option<Layout>

The layout implied by a format × 100 + revision content version, or None for a version at or above V5_FROM_VERSION.

pub const fn extension(self) -> &'static str

The file extension a generation’s instruments carry, without the dot.

pub const fn splits_wide_openings(self) -> bool

Whether stereo channels occupy alternating, independently padded word streams. True only for V4; only 1:1 records gain padding because content tiles whole words.

pub const fn word(self) -> usize

Bytes per stream word. A header occupies one word’s low 24 bits.

pub const fn header_len(self) -> usize

Bytes in the fixed stroke header before the word stream.

pub const fn cell(self) -> usize

Fields per mono cell. Content counts are multiples; stereo terminators double it.

pub const fn rmax(self) -> usize

Fields one 1:1 record covers at most, per channel — RMAX. A run is split into whole records of at least Layout::cell and at most this, which is what makes the reachable run lengths come in windows with gaps between them.

pub const fn signed_peak(self) -> bool

Whether statistic B carries the extreme content field’s sign. V2 stores its magnitude, so ffffff is a peak of 16,777,215 there and −1 in the wide chain.

Trait Implementations

impl Clone for Layout

fn clone(&self) -> Layout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Layout

impl Debug for Layout

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

Formats the value using the given formatter.

impl Eq for Layout

impl PartialEq for Layout

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Layout