Add X11 daemon with tray status

internal/audio/record.go

@@ -0,0 +1,70 @@
+package audio
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+type Recorder struct {
+	Input string
+}
+
+type RecordResult struct {
+	WavPath string
+	TempDir string
+}
+
+func (r Recorder) Start(ctx context.Context) (*exec.Cmd, *RecordResult, error) {
+	tmpdir, err := os.MkdirTemp("", "lel-")
+	if err != nil {
+		return nil, nil, err
+	}
+	wav := filepath.Join(tmpdir, "mic.wav")
+
+	args := []string{"-hide_banner", "-loglevel", "error"}
+	args = append(args, ffmpegInputArgs(r.Input)...)
+	args = append(args, "-ac", "1", "-ar", "16000", "-c:a", "pcm_s16le", wav)
+
+	cmd := exec.CommandContext(ctx, "ffmpeg", args...)
+	if err := cmd.Start(); err != nil {
+		_ = os.RemoveAll(tmpdir)
+		return nil, nil, err
+	}
+
+	return cmd, &RecordResult{WavPath: wav, TempDir: tmpdir}, nil
+}
+
+func WaitWithTimeout(cmd *exec.Cmd, timeout time.Duration) error {
+	done := make(chan error, 1)
+	go func() {
+		done <- cmd.Wait()
+	}()
+
+	select {
+	case err := <-done:
+		return err
+	case <-time.After(timeout):
+		if cmd.Process != nil {
+			_ = cmd.Process.Kill()
+		}
+		return fmt.Errorf("process timeout after %s", timeout)
+	}
+}
+
+func ffmpegInputArgs(spec string) []string {
+	if spec == "" {
+		spec = "pulse:default"
+	}
+	kind := spec
+	name := "default"
+	if idx := strings.Index(spec, ":"); idx != -1 {
+		kind = spec[:idx]
+		name = spec[idx+1:]
+	}
+	return []string{"-f", kind, "-i", name}
+}