Struct StmChannel 

pub struct StmChannel {

    pub instrument: u8,
    pub note: (u8, u8),
    pub volume: u8,
    pub voice: MixerVoice,
    pub effect: u8,
    pub effect_param: u8,
    pub cur_semis: f32,
    pub porta_target_semis: f32,
    pub porta_speed: u8,
    pub porta_updown_mem: u8,
    pub vib_pos: u8,
    pub vib_speed: u8,
    pub vib_depth: u8,
    pub vol_slide_mem: u8,
    pub trem_pos: u8,
    pub trem_speed: u8,
    pub trem_depth: u8,
    pub note_cut_tick: u8,
    pub note_delay_tick: u8,
    pub pending_note: (u8, u8),
    pub pending_instrument: u8,
    pub pending_volume: u8,
    pub has_pending_delay: bool,
}

Per-channel playback state for STM.

Fields

instrument: u8

Currently-loaded instrument index (1..=31, 0 = none).

note: (u8, u8)

Current note (octave, semitone) for the currently playing sample.

volume: u8

Volume 0..=64.

voice: MixerVoice

Shared mixer voice.

effect: u8

Current effect command 0..=0xF.

effect_param: u8

Current effect parameter.

cur_semis: f32

Current live semitone index (fractional, measured from C-0). Porta / vibrato / fine porta all mutate this; the voice frequency is derived from it every tick.

porta_target_semis: f32

Target semitone index for tone portamento (3xy / 5xy).

porta_speed: u8

Tone-porta speed memory (shared between 3xy and 5xy).

porta_updown_mem: u8

1xy / 2xy memory — last non-zero parameter (shared).

vib_pos: u8

Vibrato sine-table position 0..=63.

vib_speed: u8

Vibrato speed memory (last non-zero 4xy x nibble).

vib_depth: u8

Vibrato depth memory (last non-zero 4xy y nibble).

vol_slide_mem: u8

Axy volume-slide parameter memory (shared with 5xy / 6xy).

trem_pos: u8

Tremolo sine-table position 0..=63. Walks like vib_pos but on a separate register so 4xy vibrato and 7xy tremolo on the same channel don’t share phase.

trem_speed: u8

Tremolo speed memory (last non-zero 7xy x nibble). PT semantics per Protracker-effects-MODFIL12.txt 7:Tremolo say the per-nibble memory operates independently from vibrato’s.

trem_depth: u8

Tremolo depth memory (last non-zero 7xy y nibble).

note_cut_tick: u8

Pending note-cut tick (ECx): if >0, volume forced to 0 on that tick.

note_delay_tick: u8

Pending note-delay tick (EDx): if >0, the cell’s note is triggered on this tick instead of tick 0.

pending_note: (u8, u8)

Saved trigger data for a pending note-delay.

pending_instrument: u8

pending_volume: u8

has_pending_delay: bool

True if the pending note-delay slot is populated.

Trait Implementations

impl Clone for StmChannel

fn clone(&self) -> StmChannel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StmChannel

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

Formats the value using the given formatter.

impl Default for StmChannel

fn default() -> StmChannel

Returns the “default value” for a type.