Struct MemoryPcmSource 

pub struct MemoryPcmSource { /* private fields */ }

In-memory PcmSource that replays a fixed queue of buffers.

This is the deterministic test backend for the source side of the PCM fabric: it hands out the buffers it was constructed with, in order, then reports end-of-stream.

Examples

use sim_lib_stream_audio::{MemoryPcmSource, PcmBuffer, PcmSource, PcmSpec};

let spec = PcmSpec::i16(1, 48_000)?;
let buffer = PcmBuffer::i16(spec, 2, vec![1, 2])?;
let mut source = MemoryPcmSource::new(spec, vec![buffer])?;
assert_eq!(source.remaining(), 1);
assert!(source.read_buffer()?.is_some());
assert!(source.read_buffer()?.is_none());

Implementations

impl MemoryPcmSource

pub fn new(spec: PcmSpec, buffers: Vec<PcmBuffer>) -> Result<Self>

Builds a source that will replay buffers in order.

Returns an error if any buffer’s spec does not match spec.

pub fn remaining(&self) -> usize

Returns the number of buffers not yet read.

Trait Implementations

impl Clone for MemoryPcmSource

fn clone(&self) -> MemoryPcmSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryPcmSource

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

Formats the value using the given formatter.

impl PcmSource for MemoryPcmSource

fn spec(&self) -> &PcmSpec

Returns the audio format every buffer from this source uses.

fn read_buffer(&mut self) -> Result<Option<PcmBuffer>>

Reads the next buffer, or Ok(None) once the source is drained.