Module audio_streams::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.