Trait SampleSource

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pub trait SampleSource {
    // Required methods
    fn len(&self) -> usize;
    fn loop_start(&self) -> usize;
    fn loop_end(&self) -> usize;
    fn loop_kind(&self) -> LoopKind;
    fn at(&self, idx: usize) -> f32;

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

Expand description

Read-only view into a tracker sample body.

Implementations must return samples in the range -1.0..=1.0. The caller (the MixerVoice) manages the fractional read position, so at takes an integer sample index.

Required Methods§

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fn len(&self) -> usize

Total number of PCM frames.

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fn loop_start(&self) -> usize

Loop start index (frames).

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fn loop_end(&self) -> usize

Loop end index (frames), exclusive.

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fn loop_kind(&self) -> LoopKind

Loop mode.

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fn at(&self, idx: usize) -> f32

Sample at integer index, normalised to -1.0..=1.0. Callers are responsible for ensuring idx < len(); implementations may return 0.0 for out-of-range indices defensively.