Decode Core Audio Format audio to PCM float samples.
Install
npm i @audio/decode-caf
Usage
import decode, { decoder } from '@audio/decode-caf'
let { channelData, sampleRate } = decode(cafBytes)
let dec = decoder()
let result = dec.decode(chunk)
dec.free()
decode() and decoder() are synchronous.
API
decode(src): AudioData
Decode a complete Uint8Array or ArrayBuffer.
decoder(): CAFDecoder
Create a decoder instance.
dec.decode(data): decode a chunk.
dec.flush(): discard buffered partial data and return an empty result.
dec.free(): release resources.
Formats
lpcm: 8, 16, 24, and 32-bit signed integer; 32 and 64-bit float; little-endian or big-endian.
alaw: G.711 A-law.
ulaw: G.711 µ-law.
ima4: IMA/QuickTime ADPCM.
Other formats (AAC and ALAC packets, as in Apple Loops) throw CAF: unsupported format '<id>'.