Struct sample::signal::Output

pub struct Output<S> where
    S: Signal,  { /* fields omitted */ }

An output node to which some signal S is Outputing its frames.

It may be more accurate to say that the Output "pull"s frames from the signal.

Methods

impl<S> Output<S> where     S: Signal,

pub fn pending_frames(&self) -> usize

The number of frames that have been requested from the Signal S by some other Output that have not yet been requested by this Output.

This is useful when using an Output to "monitor" some signal, allowing the user to drain only frames that have already been requested by some other Output.

Example

extern crate sample;

use sample::{signal, Signal};

fn main() {
    let frames = [[0.1], [0.2], [0.3]];
    let bus = signal::from_iter(frames.iter().cloned()).bus();
    let signal = bus.send();
    let mut monitor = bus.send();
    assert_eq!(signal.take(3).collect::<Vec<_>>(), vec![[0.1], [0.2], [0.3]]);
    assert_eq!(monitor.pending_frames(), 3);
    assert_eq!(monitor.next(), [0.1]);
    assert_eq!(monitor.pending_frames(), 2);
}

Trait Implementations

impl<S> Signal for Output<S> where     S: Signal,

type Frame = S::Frame

The Frame type returned by the Signal.

fn next(&mut self) -> Self::Frame

Yield the next Frame in the Signal.

fn is_exhausted(&self) -> bool

Whether or not the signal is exhausted of meaningful frames.

fn map<M, F>(self, map: M) -> Map<Self, M, F> where     Self: Sized,     M: FnMut(Self::Frame) -> F,     F: Frame,

A signal that maps one set of frames to another.

fn zip_map<O, M, F>(self, other: O, map: M) -> ZipMap<Self, O, M, F> where     Self: Sized,     M: FnMut(Self::Frame, O::Frame) -> F,     O: Signal,     F: Frame,

A signal that maps one set of frames to another.

fn add_amp<S>(self, other: S) -> AddAmp<Self, S> where     Self: Sized,     S: Signal,     S::Frame: Frame<Sample = <<Self::Frame as Frame>::Sample as Sample>::Signed, NumChannels = <Self::Frame as Frame>::NumChannels>,

Provides an iterator that yields the sum of the frames yielded by both other and self in lock-step.

fn mul_amp<S>(self, other: S) -> MulAmp<Self, S> where     Self: Sized,     S: Signal,     S::Frame: Frame<Sample = <<Self::Frame as Frame>::Sample as Sample>::Float, NumChannels = <Self::Frame as Frame>::NumChannels>,

Provides an iterator that yields the product of the frames yielded by both other and self in lock-step.

fn offset_amp(     self,     offset: <<Self::Frame as Frame>::Sample as Sample>::Signed ) -> OffsetAmp<Self> where     Self: Sized,

Provides an iterator that offsets the amplitude of every channel in each frame of the signal by some sample value and yields the resulting frames.

fn scale_amp(     self,     amp: <<Self::Frame as Frame>::Sample as Sample>::Float ) -> ScaleAmp<Self> where     Self: Sized,

Produces an Iterator that scales the amplitude of the sample of each channel in every Frame yielded by self by the given amplitude.

fn offset_amp_per_channel<F>(self, amp_frame: F) -> OffsetAmpPerChannel<Self, F> where     Self: Sized,     F: Frame<Sample = <<Self::Frame as Frame>::Sample as Sample>::Signed, NumChannels = <Self::Frame as Frame>::NumChannels>,

Produces a new Signal that offsets the amplitude of every Frame in self by the respective amplitudes in each channel of the given amp_frame.

fn scale_amp_per_channel<F>(self, amp_frame: F) -> ScaleAmpPerChannel<Self, F> where     Self: Sized,     F: Frame<Sample = <<Self::Frame as Frame>::Sample as Sample>::Float, NumChannels = <Self::Frame as Frame>::NumChannels>,

Produces a new Signal that scales the amplitude of every Frame in self by the respective amplitudes in each channel of the given amp_frame.

fn mul_hz<M, I>(self, interpolator: I, mul_per_frame: M) -> MulHz<Self, M, I> where     Self: Sized,     M: Signal<Frame = [f64; 1]>,     I: Interpolator,

Multiplies the rate at which frames of self are yielded by the given signal.

fn from_hz_to_hz<I>(     self,     interpolator: I,     source_hz: f64,     target_hz: f64 ) -> Converter<Self, I> where     Self: Sized,     I: Interpolator,

Converts the rate at which frames of the Signal are yielded using interpolation.

fn scale_hz<I>(self, interpolator: I, multi: f64) -> Converter<Self, I> where     Self: Sized,     I: Interpolator,

Multiplies the rate at which frames of the Signal are yielded by the given value.

fn delay(self, n_frames: usize) -> Delay<Self> where     Self: Sized,

Delays the Signal by the given number of frames.

fn into_interleaved_samples(self) -> IntoInterleavedSamples<Self> where     Self: Sized,

Converts a Signal into a type that yields the interleaved Samples.

fn clip_amp(     self,     thresh: <<Self::Frame as Frame>::Sample as Sample>::Signed ) -> ClipAmp<Self> where     Self: Sized,

Clips the amplitude of each channel in each Frame yielded by self to the given threshold amplitude.

fn inspect<F>(self, inspect: F) -> Inspect<Self, F> where     Self: Sized,     F: FnMut(&Self::Frame),

Create a new Signal that calls the enclosing function on each iteration.

fn fork<S>(self, ring_buffer: Bounded<S>) -> Fork<Self, S> where     Self: Sized,     S: SliceMut<Element = Self::Frame>,

Forks Self into two signals that produce the same frames.

fn bus(self) -> Bus<Self> where     Self: Sized,

Moves the Signal into a Bus from which its output may be divided into multiple other Signals in the form of Outputs.

Important traits for Take<S>

impl<S> Iterator for Take<S> where
    S: Signal,  type Item = S::Frame;

fn take(self, n: usize) -> Take<Self> where     Self: Sized,

Converts the Signal into an Iterator that will yield the given number for Frames before returning None.

Important traits for UntilExhausted<S>

impl<S> Iterator for UntilExhausted<S> where
    S: Signal,  type Item = S::Frame;

fn until_exhausted(self) -> UntilExhausted<Self> where     Self: Sized,

Converts the Signal into an Iterator yielding frames until the signal.is_exhausted() returns true.

fn buffered<S>(self, ring_buffer: Bounded<S>) -> Buffered<Self, S> where     Self: Sized,     S: Slice<Element = Self::Frame> + SliceMut,

Buffers the signal using the given ring buffer.

fn rms<S>(self, ring_buffer: Fixed<S>) -> Rms<Self, S> where     Self: Sized,     S: Slice<Element = <Self::Frame as Frame>::Float> + SliceMut,

An adaptor that yields the RMS of the signal.

fn detect_envelope<D>(     self,     detector: Detector<Self::Frame, D> ) -> DetectEnvelope<Self, D> where     Self: Sized,     D: Detect<Self::Frame>,

An adaptor that detects and yields the envelope of the signal.

fn by_ref(&mut self) -> &mut Self where     Self: Sized,

Borrows a Signal rather than consuming it.

impl<S> Drop for Output<S> where     S: Signal,

fn drop(&mut self)

Executes the destructor for this type.