Struct ActionContext 

pub struct ActionContext<'a> {
    pub params: &'a [u8],
    pub beat_info: Option<&'a BeatInfo>,
    pub is_high_frequency: bool,
}

Context passed to every action execution

Provides access to current parameter state and timing information for context-aware actions.

High-Frequency Actions

For performance-critical use cases like LFO (Low Frequency Oscillator) or Audio React running at 60Hz/120Hz, set is_high_frequency: true. This allows action implementations to use optimized paths:

• Pre-allocated buffers instead of SmallVec
• Reduced allocations and copying
• Faster parameter update paths

Regular UI button triggers should use is_high_frequency: false.

Fields

params: &'a [u8]

Current parameter values (raw bytes from GPU buffer)

beat_info: Option<&'a BeatInfo>

Optional timing information for beat-synchronized actions

is_high_frequency: bool

High-frequency execution hint (60Hz/120Hz)

When true, action implementations should use optimized paths with pre-allocated buffers to minimize per-frame overhead.

Trait Implementations

impl<'a> Debug for ActionContext<'a>

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

Formats the value using the given formatter.