raw audio recording with portaudio and golang

record.go

package main

import (
	"encoding/binary"
	"fmt"
	"os"
	"os/signal"
	"time"

	"github.com/gordonklaus/portaudio"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Println("missing required argument:  output file name")
		return
	}
	fmt.Println("Recording.  Press Ctrl-C to stop.")

	sig := make(chan os.Signal, 1)
	signal.Notify(sig, os.Interrupt, os.Kill)

	fileName := os.Args[1]
	f, err := os.Create(fileName)
	chk(err)

	defer func() {
		chk(f.Close())
	}()

	portaudio.Initialize()
	time.Sleep(1)
	defer portaudio.Terminate()
	in := make([]int16, 64)
	stream, err := portaudio.OpenDefaultStream(1, 0, 16000, len(in), in)
	chk(err)
	defer stream.Close()

	chk(stream.Start())
loop:
	for {
		chk(stream.Read())
		chk(binary.Write(f, binary.LittleEndian, in))
		select {
		case <-sig:
			break loop
		default:
		}
	}
	chk(stream.Stop())
}

func chk(err error) {
	if err != nil {
		panic(err)
	}
}

Little question: when we deploy the app we don't need to install portaudio on the users' machines, right? We just have to do it on our developers machines, correct? Thanks

If you also provide the shared library that the application will link, then no. A static binary also can be an option, but I'm not sure how Go does this.

If I'm using "mpg123 - " to play the output file will it work ?