go-aac

Pure Go AAC (Advanced Audio Coding) decoder. No CGO dependencies.

Overview

go-aac is a pure Go port of FAAD2 (Freeware Advanced Audio Decoder), providing AAC decoding without any C dependencies.

Supported Formats

• AAC-LC (Low Complexity) - Most common AAC profile
• HE-AAC (High Efficiency) - AAC-LC + SBR (Spectral Band Replication)
• HE-AACv2 - HE-AAC + PS (Parametric Stereo)

Container Support

• Raw AAC (ADTS)
• M4A/MP4 (with external demuxer)

Installation

go get github.com/llehouerou/go-aac

Usage

package main

import (
    "os"
    "github.com/llehouerou/go-aac"
)

func main() {
    // Open AAC file
    f, _ := os.Open("audio.aac")
    defer f.Close()

    // Create decoder
    dec, _ := aac.NewDecoder(f)

    // Decode frames
    for {
        samples, err := dec.Decode()
        if err != nil {
            break
        }
        // Process samples ([]int16)
        _ = samples
    }
}

Status

Work in Progress - This library is under active development.

See docs/implementation-plan.md for the roadmap.

Building

# Run tests
make test

# Format and lint
make check

# Generate test data (requires FFmpeg)
make testdata

Attribution

This project is a Go port of FAAD2. The original C implementation is:

FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com

Code from FAAD2 is copyright (c) Nero AG, www.nero.com

See AUTHORS for the full list of contributors.

License

This project is licensed under the GNU General Public License v2.0 - see the LICENSE file for details.

As a derivative work of FAAD2, this library must be distributed under the same GPL-2.0 license. Any non-GPL usage is strictly forbidden.

Related Projects

• FAAD2 - Original C implementation