[−][src]Struct chfft::Mdct1D
Perform a Modified discrete cosine transform
Example
use chfft::Mdct1D; fn main() { let input = [2.0 as f64, 0.0, 1.0, 1.0, 0.0, 3.0, 2.0, 4.0]; let mut mdct = Mdct1D::with_sine(input.len()); let output = mdct.forward(&input); println!("the transform of {:?} is {:?}", input, output); }
Methods
impl<T: Float + FloatConst + NumAssign> Mdct1D<T, fn(_: usize, _: usize) -> T>
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pub fn with_sine(len: usize) -> Self
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Returns a instances to execute DCT with sine window
use chfft::Mdct1D; let mut mdct = Mdct1D::<f64, _>::with_sine(1024);
pub fn with_vorbis(len: usize) -> Self
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Returns a instances to execute DCT with vorbis window
use chfft::Mdct1D; let mut mdct = Mdct1D::<f64, _>::with_vorbis(1024);
impl<T: Float + FloatConst + NumAssign, F: Fn(usize, usize) -> T> Mdct1D<T, F>
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pub fn new(window_func: F, len: usize) -> Self
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Returns a instances to execute DCT
use chfft::Mdct1D; let mut mdct = Mdct1D::new(|l, p| (std::f64::consts::PI * (p as f64 + 0.5) / l as f64).sin(), 1024);
pub fn setup(&mut self, len: usize)
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Reinitialize length
use chfft::Mdct1D; let mut mdct = Mdct1D::<f64, _>::with_sine(1024); // reinitialize mdct.setup(2048);
pub fn forward(&mut self, source: &[T]) -> Vec<T>
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The 1 scaling factor forward transform
use chfft::Mdct1D; let input = [2.0 as f64, 0.0, 1.0, 1.0, 0.0, 3.0, 2.0, 4.0]; let mut mdct = Mdct1D::with_sine(input.len()); let output = mdct.forward(&input);
pub fn backward(&mut self, source: &[T]) -> Vec<T>
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The 1 scaling factor backward transform
use chfft::Mdct1D; let input = [2.0 as f64, 0.0, 1.0, 1.0, 0.0, 3.0, 2.0, 4.0]; let mut mdct = Mdct1D::with_sine(input.len() << 1); let output = mdct.backward(&input);
pub fn forwardu(&mut self, source: &[T]) -> Vec<T>
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The \(\sqrt{\frac 2 n}\) scaling factor forward transform
use chfft::Mdct1D; let input = [2.0 as f64, 0.0, 1.0, 1.0, 0.0, 3.0, 2.0, 4.0]; let mut mdct = Mdct1D::with_sine(input.len()); let output = mdct.forward(&input);
pub fn backwardu(&mut self, source: &[T]) -> Vec<T>
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The \(\sqrt{\frac 2 n}\) scaling factor backward transform
use chfft::Mdct1D; let input = [2.0 as f64, 0.0, 1.0, 1.0, 0.0, 3.0, 2.0, 4.0]; let mut mdct = Mdct1D::with_sine(input.len() << 1); let output = mdct.backward(&input);
Trait Implementations
Auto Trait Implementations
impl<T, F> RefUnwindSafe for Mdct1D<T, F> where
F: RefUnwindSafe,
T: RefUnwindSafe,
F: RefUnwindSafe,
T: RefUnwindSafe,
impl<T, F> Send for Mdct1D<T, F> where
F: Send,
T: Send,
F: Send,
T: Send,
impl<T, F> Sync for Mdct1D<T, F> where
F: Sync,
T: Sync,
F: Sync,
T: Sync,
impl<T, F> Unpin for Mdct1D<T, F> where
F: Unpin,
T: Unpin,
F: Unpin,
T: Unpin,
impl<T, F> UnwindSafe for Mdct1D<T, F> where
F: UnwindSafe,
T: UnwindSafe,
F: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,