Trait ExactSizeBuf 

pub trait ExactSizeBuf: Buf {
    // Required method
    fn frames(&self) -> usize;
}

Trait used to describe a buffer that knows exactly how many frames it has regardless of if it’s sized or not.

Examples

use audio::ExactSizeBuf;

fn test<T>(buf: T) where T: ExactSizeBuf {
    assert_eq!(buf.frames(), 4);
}

test(audio::interleaved![[0i16; 4]; 4]);
test(audio::sequential![[0i16; 4]; 4]);
test(audio::dynamic![[0i16; 4]; 4]);
test(audio::wrap::interleaved([0i16; 16], 4));
test(audio::wrap::sequential([0i16; 16], 4));

Required Methods

fn frames(&self) -> usize

The number of frames in a buffer.

Examples

use audio::ExactSizeBuf;

fn test<T>(buf: T) where T: ExactSizeBuf {
    assert_eq!(buf.frames(), 4);
}

test(audio::interleaved![[0i16; 4]; 4]);
test(audio::sequential![[0i16; 4]; 4]);
test(audio::dynamic![[0i16; 4]; 4]);
test(audio::wrap::interleaved([0i16; 16], 4));
test(audio::wrap::sequential([0i16; 16], 4));

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<B> ExactSizeBuf for &B

where B: ?Sized + ExactSizeBuf,

fn frames(&self) -> usize

impl<B> ExactSizeBuf for &mut B

where B: ?Sized + ExactSizeBuf,

fn frames(&self) -> usize

Implementors

impl<B> ExactSizeBuf for Limit<B>

where B: ExactSizeBuf,

Limit adjusts the implementation of ExactSizeBuf to take the frame limiting into account.

use audio::{Buf, ExactSizeBuf};

let buf = audio::interleaved![[0; 4]; 2];

assert_eq!((&buf).limit(0).frames(), 0);
assert_eq!((&buf).limit(1).frames(), 1);
assert_eq!((&buf).limit(5).frames(), 4);

impl<B> ExactSizeBuf for Skip<B>

where B: ExactSizeBuf,

Skip adjusts the implementation of ExactSizeBuf.

use audio::{Buf, ExactSizeBuf};

let buf = audio::interleaved![[0; 4]; 2];

assert_eq!((&buf).skip(0).frames(), 4);
assert_eq!((&buf).skip(1).frames(), 3);
assert_eq!((&buf).skip(5).frames(), 0);

impl<B> ExactSizeBuf for Tail<B>

where B: ExactSizeBuf,

Tail adjusts the implementation of ExactSizeBuf.

use audio::{Buf, ExactSizeBuf};

let buf = audio::interleaved![[0; 4]; 2];

assert_eq!((&buf).tail(0).frames(), 0);
assert_eq!((&buf).tail(1).frames(), 1);
assert_eq!((&buf).tail(5).frames(), 4);