Struct EnvelopeGenerator 

pub struct EnvelopeGenerator {
    pub state: State,
    pub envelope_counter: u8,
    pub exponential_counter: u8,
    pub exponential_counter_period: u8,
    pub hold_zero: bool,
    pub rate_counter: u16,
    pub rate_counter_period: u16,
    /* private fields */
}

A 15 bit counter is used to implement the envelope rates, in effect dividing the clock to the envelope counter by the currently selected rate period. In addition, another counter is used to implement the exponential envelope decay, in effect further dividing the clock to the envelope counter. The period of this counter is set to 1, 2, 4, 8, 16, 30 at the envelope counter values 255, 93, 54, 26, 14, 6, respectively.

Fields

state: State

envelope_counter: u8

exponential_counter: u8

exponential_counter_period: u8

hold_zero: bool

rate_counter: u16

rate_counter_period: u16

Implementations

impl EnvelopeGenerator

pub fn get_attack_decay(&self) -> u8

pub fn get_control(&self) -> u8

pub fn get_sustain_release(&self) -> u8

pub fn set_attack_decay(&mut self, value: u8)

pub fn set_control(&mut self, value: u8)

pub fn set_sustain_release(&mut self, value: u8)

pub fn clock(&mut self)

pub fn clock_delta(&mut self, delta: u32)

pub fn output(&self) -> u8

pub fn read_env(&self) -> u8

pub fn reset(&mut self)

Trait Implementations

impl Clone for EnvelopeGenerator

fn clone(&self) -> EnvelopeGenerator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for EnvelopeGenerator

fn default() -> Self

Returns the “default value” for a type.

impl Copy for EnvelopeGenerator