@audio/decode-dts

Decode DTS (DTS Coherent Acoustics) to PCM float samples. libdca compiled to a single-file WASM ES module — no side files, loads from any CDN, Node, workers and AudioWorklets.

import decode, { decoder } from '@audio/decode-dts'

let { channelData, sampleRate } = await decode(dtsBytes)

let dec = await decoder()
let head = dec.decode(chunk1)   // synchronous; partial frames carry over
let tail = dec.flush()
dec.free()

Input is a raw DTS core frame stream (.dts, or the frames a container demuxer extracts — @audio/decode-mp4, @audio/decode-webm and @audio/decode-avi route their DTS tracks here). The stream's own layout is kept, up to 5.1; channels come out in WAV order: FL, FR, FC, LFE, BL, BR (surround-only or mono as present). Output level is full scale,

DTS-HD Master Audio and High Resolution streams decode through their lossy core; the extension substreams are skipped. 14-bit and little-endian sync variants are handled.

API

decode(src: Uint8Array | ArrayBuffer): Promise<AudioData>

Decode a complete stream.

decoder(): Promise<DTSDecoder>

Synchronous streaming decoder: decode(chunk) returns the samples of every complete frame in the data so far, flush() drops a trailing partial frame, free() releases WASM memory. errors counts frames that failed to decode.

AudioData

{ channelData: Float32Array[], sampleRate: number }

License

ॐ · GPL-2.0-or-later, inherited from the bundled libdca.