wavey-ai / aac-wasm-decoder

decode aac adts to pcm

MPEG-2 AAC ADTS DECODER

This is a web aac decoder based on Faad2.

I made this decoder to convert aac mpeg-2 bitstream to pcm data, that can be played with AudioContext.

If you need handling aac mpeg-4 audio, you need to modify a bit of code manually.

Difference between AAC MPEG2 and AAC MEPG4

Author: Sunqi

Version: 1.0.0

---

Install Emscripten before running the commands below.

Compile Faad2

• unix: ./dl.sh

Build

• unix: ./compile.sh

Useage Example

function onDecode({pcm}) {
    // play pcm 
}

let decoder = new AAC_ADTS_DECODER({
        onDecode: onDecode
})

decoder.ready.then(() => {
    decoder.decode(aac_stream_buffer)
})
.catch(e) {
    // handle error
}

TODO

• support AAC MPEG4
• and more
• 减肥