Enum TransportSpeed 

pub enum TransportSpeed {
    Static {
        multiplier: f64,
        start_at: Option<InstantMusical>,
    },
    Automate {
        keyframes: Arc<Vec<SpeedMultiplierKeyframe>>,
        start_at: Option<InstantMusical>,
    },
}

A multiplier for the speed of the transport.

A value of 1.0 means no change in speed, a value less than 1.0 means a decrease in speed, and a value greater than 1.0 means an increase in speed.

Variants

Static

Set the mulitplier to a single static value.

Fields

multiplier: f64

The speed multiplier.

This can cause a panic if multiplier <= 0.0.

start_at: Option<InstantMusical>

If this is Some, then the change will happen when the transport reaches the given playhead.

If this is None, then the change will happen as soon as the processor receives the event.

Automate

Automate the speed multiplier values.

Fields

keyframes: Arc<Vec<SpeedMultiplierKeyframe>>

The keyframes of animation.

Note, the keyframes must be sorted by the event instant or else it will not work correctly.

start_at: Option<InstantMusical>

If this is Some, then the change will happen when the transport reaches the given playhead.

If this is None, then the change will happen as soon as the processor receives the event.

Implementations

impl TransportSpeed

pub const fn static_multiplier( multiplier: f64, change_at: Option<InstantMusical>, ) -> Self

Create a TransportSpeed with a single static value.

• speed_multiplier - A multiplier for the playback speed. A value of 1.0 means no change in speed, a value less than 1.0 means a decrease in speed, and a value greater than 1.0 means an increase in speed.
• change_at: If this is Some, then the change will happen when the transport reaches the given playhead. If this is None, then the change will happen as soon as the processor receives the event.

pub fn start_at(&self) -> Option<InstantMusical>

Trait Implementations

impl Clone for TransportSpeed

fn clone(&self) -> TransportSpeed

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransportSpeed

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

Formats the value using the given formatter.

impl Default for TransportSpeed

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for TransportSpeed

fn eq(&self, other: &TransportSpeed) -> 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 StructuralPartialEq for TransportSpeed