gistfile1.go

package main

import (
	"github.com/krig/go-sox"
	"log"
)

func init() {
	if !sox.Init() {
		log.Fatal("Failed to initialize SoX")
	}
	// Make sure to call Quit before terminating
	defer sox.Quit()
}

func main() {
	splitAudioFile("./0d61c931-999b-4f60-a023-ce9b38cfc633-1.0.wav", "left.wav", "1")
	splitAudioFile("./0d61c931-999b-4f60-a023-ce9b38cfc633-1.0.wav", "right.wav", "2")
}

func splitAudioFile(inputName string, outputName string, channel string) {
	in := sox.OpenRead(inputName)
	if in == nil {
		log.Fatal("Failed to open " + inputName)
	}
	defer in.Release()

	out := sox.OpenWrite(outputName, in.Signal(), in.Encoding(), nil)
	if out == nil {
		log.Fatal("Failed to open " + outputName)
	}
	defer out.Release()

	chain := sox.CreateEffectsChain(in.Encoding(), out.Encoding())
	e := sox.CreateEffect(sox.FindEffect("input"))
	e.Options(in)
	chain.Add(e, in.Signal(), in.Signal())
	e.Release()

	e = sox.CreateEffect(sox.FindEffect("remix"))
	e.Options(channel)
	chain.Add(e, in.Signal(), in.Signal())
	e.Release()

	e = sox.CreateEffect(sox.FindEffect("output"))
	e.Options(out)
	chain.Add(e, in.Signal(), in.Signal())
	e.Release()

	chain.Flow()
}