Crate web_audio_api

A high-level API for processing and synthesizing audio.

Example

use std::fs::File;
use web_audio_api::context::{AsBaseAudioContext, AudioContext};
use web_audio_api::media::{MediaElement, OggVorbisDecoder};
use web_audio_api::node::{AudioNode, AudioControllableSourceNode, AudioScheduledSourceNode};

let context = AudioContext::new();

// setup background music:
// read from local file
let file = File::open("sample.ogg").unwrap();
// decode file to media stream
let stream = OggVorbisDecoder::try_new(file).unwrap();
// wrap stream in MediaElement, so we can control it (loop, play/pause)
let mut media = MediaElement::new(stream);
// register as media element in the audio context
let background = context.create_media_element_source(media);
background.set_loop(true);
// use a gain node to control volume
let gain = context.create_gain();
// play at low volume
gain.gain().set_value(0.5);
// connect the media node to the gain node
background.connect(&gain);
// connect the gain node to the destination node (speakers)
gain.connect(&context.destination());
// start playback
background.start();

// mix in an oscillator sound
let osc = context.create_oscillator();
osc.connect(&context.destination());
osc.start();

// enjoy listening
//std::thread::sleep(std::time::Duration::from_secs(4));

Modules

alloc	Optimized audio signal data structures, used in AudioProcessors
buffer	General purpose audio signal data structures
context	The BaseAudioContext interface and the AudioContext and OfflineAudioContext types
control	User controls for audio playback (play/pause/loop)
media	OGG, WAV and MP3 encoding/decoding
node	The AudioNode interface and concrete types
param	AudioParam interface
process	Audio processing code that runs on the audio rendering thread
spatial	Spatialization/Panning primitives

Structs

ChannelCount	Number of channels for an audio buffer of audio node
IndexSizeError	Input/output with this index does not exist
SampleRate	Number of samples processed per second (Hertz) for a single channel of audio

Constants

BUFFER_SIZE	Render quantum size (audio graph is rendered in blocks of this size)
MAX_CHANNELS	Maximum number of channels for audio processing