Created
April 19, 2020 08:20
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raw audio recording with portaudio and golang
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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) | |
} | |
} |
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If I'm using "mpg123 - " to play the output file will it work ?