Struct AudioBlock 

pub struct AudioBlock {
    pub start_sample: i64,
    pub sample_rate: u32,
    pub speakers: SpeakerLayout,
    pub channels: Vec<Vec<f32>>,
}

Planar floating-point audio at the project sample rate.

Positions are sample indices at sample_rate, never ticks: a tick is not a whole number of samples at 44.1 kHz, so a start in ticks cannot say which sample a block begins with, and every conversion between the two would need a rounding rule both sides agree on. Sample n is at n / sample_rate seconds on the block’s timeline, the source’s for a decoder and the project’s for a mixer.

A block from a decoder or an AudioBlockProvider keeps its source’s channels, 1 to MAX_AUDIO_CHANNELS planes, and says which speaker each feeds; the mixer folds them into the project’s layout by those speakers. A mixer’s own blocks have the project’s channels.

Fields

start_sample: i64

Index of the first sample, at sample_rate.

sample_rate: u32

Project sample rate used by every returned block.

speakers: SpeakerLayout

The speaker each of channels feeds, one per plane.

channels: Vec<Vec<f32>>

One vector per channel, all with equal lengths, in speakers’ order.

Implementations

impl AudioBlock

pub fn frames(&self) -> usize

Samples per channel.

pub fn end_sample(&self) -> i64

Index one past the last sample.

pub fn start_time(&self) -> MediaTime

The first sample’s time, at or before it on the tick grid.

For display and for APIs that take a MediaTime; positions within audio stay in samples.

Trait Implementations

impl Clone for AudioBlock

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AudioBlock

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for AudioBlock

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for AudioBlock