Crate audio_overlay

Overlay audio samples from one array onto another. You can optionally expand the destination array.

The overlay function can be used for i8, i16, i32, i64, and f32.

Example

use audio_overlay::overlay;
use hound::WavReader;
use rodio::buffer::SamplesBuffer;
use rodio::{OutputStream, Sink};

// Set the framerate.
let framerate: u32 = 44100;
// Load the audio clips.
// Source: https://archive.org/download/NasaApollo11OnboardRecordings/11_highlight_2.ogg
let src: Vec<i16> = WavReader::open("src.wav")
.unwrap()
.samples::<i16>()
.map(|s| s.unwrap())
.collect::<Vec<i16>>();
// Source: https://archive.org/download/airship1904/airship1904.ogg
let mut dst: Vec<i16> = WavReader::open("dst.wav")
.unwrap()
.samples::<i16>()
.map(|s| s.unwrap())
.collect::<Vec<i16>>();

// // Overlay the audio clips. The src clip will start 1.0 seconds after dst begins.
overlay(src.as_slice(), &mut dst, 1.0, framerate, true);

// Play the audio clips. Source: https://docs.rs/rodio/latest/rodio/
let (_stream, stream_handle) = OutputStream::try_default().unwrap();
let source = SamplesBuffer::new(1, framerate, dst);
let sink = Sink::try_new(&stream_handle).unwrap();
sink.append(source);
sink.sleep_until_end();

Traits

• Overlayable
  Overlay values onto each other. The values are are added together and clamped to min/max values.
• ValueBounds
  This is used by overlay() to get the minimum and maximum values of a given type for the purposes of overlaying data.

Functions

• overlay
  Overlay audio samples from one array onto another. You can optionally expand the destination array.