Module capture

use audio_streams::{BoxError, capture::CaptureBuffer, SampleFormat, StreamSource,
    NoopStreamSource};
use std::io::Read;

const buffer_size: usize = 120;
const num_channels: usize = 2;

let mut stream_source = NoopStreamSource::new();
let sample_format = SampleFormat::S16LE;
let frame_size = num_channels * sample_format.sample_bytes();

let (_, mut stream) = stream_source
    .new_capture_stream(num_channels, sample_format, 48000, buffer_size, &[])?;
// Capture 10 buffers of zeros.
let mut buf = Vec::new();
buf.resize(buffer_size * frame_size, 0xa5u8);
for _ in 0..10 {
    let mut copy_func = |stream_buffer: &mut CaptureBuffer| {
        assert_eq!(stream_buffer.read(&mut buf)?, buffer_size * frame_size);
        Ok(())
    };
    stream.read_capture_buffer(&mut copy_func)?;
}

Structs

AsyncCaptureBuffer

Async version of ’CaptureBuffer`

CaptureBuffer

CaptureBuffer contains a block of audio samples got from capture stream. It provides temporary view to those samples and will notifies capture stream when dropped. Note that it’ll always send buffer.len() / frame_size to drop function when it got destroyed since CaptureBufferStream assumes that users get all the samples from the buffer.

NoopCaptureStream

Stream that provides null capture samples.

Enums

CaptureBufferError

Errors that are possible from a CaptureBuffer.

Traits

AsyncCaptureBufferStream

CaptureBufferStream

CaptureBufferStream provides CaptureBuffers to read with audio samples from capture.

Functions

async_read_capture_buffer

Call f with a AsyncCaptureBuffer, and trigger the buffer done call back after. f can read the capture data from the given AsyncCaptureBuffer.