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    Processor

    source
    pub struct Processor {
      channels : Int
      tempo : Double
      hop : Int
      search : Int
      input : Array[Double]
      base : Int64
      received : Int64
      emitted : Int64
      tail : Array[Double]
      started : Bool
      finished : Bool
    }

    Streaming WSOLA. Channels share one alignment offset. The analysis clock is anchored to output frames rather than previous correlation winners.

    Processor::buffered_frames

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    fn Processor::buffered_frames(self : Processor) -> Int

    Retained PCM including the overlap tail, measured in frames.

    Processor::finish

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    fn Processor::finish(self : Processor) -> Array[Double]

    Drain with zero extension to exactly round(input/tempo) frames. Repeated finish calls return empty output; reset starts a new stream.

    Processor::input_frames

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    fn Processor::input_frames(self : Processor) -> Int64

    Processor::latency_frames

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    fn Processor::latency_frames(self : Processor) -> Int

    Startup lookahead in input frames; identity has no latency.

    Processor::output_frames

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    fn Processor::output_frames(self : Processor) -> Int64

    Processor::push

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    fn Processor::push(self : Processor, samples : Array[Double]) -> Array[Double] raise 
    AudioError

    Consume complete frames, returning available PCM. Validation errors leave state unchanged. A large input is internally consumed in short blocks.

    Processor::reset

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    fn Processor::reset(self : Processor) -> Unit

    Start another stream with unchanged format and tempo.

    new

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    fn new(sample_rate : Int, channels : Int, tempo : Double) -> Processor raise 
    AudioError

    A tempo of 2 halves duration without changing the intended pitch.

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