sound and brightenss

Menu/GameShell/10_Settings/Sound/volume_linux.go

@@ -0,0 +1,105 @@
+// +build !windows,!darwin
+/*
+ * Copied from https://github.com/itchyny/volume-go,  MIT License
+ */
+package main
+
+import (
+	"errors"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var useAmixer bool
+
+func init() {
+	if _, err := exec.LookPath("pactl"); err != nil {
+		useAmixer = true
+	}
+}
+
+func cmdEnv() []string {
+	return []string{"LANG=C", "LC_ALL=C"}
+}
+
+func getVolumeCmd() []string {
+	if useAmixer {
+		return []string{"amixer", "get", "Master"}
+	}
+	return []string{"pactl", "list", "sinks"}
+}
+
+var volumePattern = regexp.MustCompile(`\d+%`)
+
+func parseVolume(out string) (int, error) {
+	lines := strings.Split(out, "\n")
+	for _, line := range lines {
+		s := strings.TrimLeft(line, " \t")
+		if useAmixer && strings.Contains(s, "Playback") && strings.Contains(s, "%") ||
+			!useAmixer && strings.HasPrefix(s, "Volume:") {
+			volumeStr := volumePattern.FindString(s)
+			return strconv.Atoi(volumeStr[:len(volumeStr)-1])
+		}
+	}
+	return 0, errors.New("no volume found")
+}
+
+func setVolumeCmd(volume int) []string {
+	if useAmixer {
+		return []string{"amixer", "set", "Master", strconv.Itoa(volume) + "%"}
+	}
+	return []string{"pactl", "set-sink-volume", "0", strconv.Itoa(volume) + "%"}
+}
+
+func increaseVolumeCmd(diff int) []string {
+	var sign string
+	if diff >= 0 {
+		sign = "+"
+	} else if useAmixer {
+		diff = -diff
+		sign = "-"
+	}
+	if useAmixer {
+		return []string{"amixer", "set", "Master", strconv.Itoa(diff) + "%" + sign}
+	}
+	return []string{"pactl", "--", "set-sink-volume", "0", sign + strconv.Itoa(diff) + "%"}
+}
+
+func getMutedCmd() []string {
+	if useAmixer {
+		return []string{"amixer", "get", "Master"}
+	}
+	return []string{"pactl", "list", "sinks"}
+}
+
+func parseMuted(out string) (bool, error) {
+	lines := strings.Split(out, "\n")
+	for _, line := range lines {
+		s := strings.TrimLeft(line, " \t")
+		if useAmixer && strings.Contains(s, "Playback") && strings.Contains(s, "%") ||
+			!useAmixer && strings.HasPrefix(s, "Mute: ") {
+			if strings.Contains(s, "[off]") || strings.Contains(s, "yes") {
+				return true, nil
+			} else if strings.Contains(s, "[on]") || strings.Contains(s, "no") {
+				return false, nil
+			}
+		}
+	}
+	return false, errors.New("no muted information found")
+}
+
+func muteCmd() []string {
+	if useAmixer {
+		return []string{"amixer", "-D", "pulse", "set", "Master", "mute"}
+	}
+	return []string{"pactl", "set-sink-mute", "0", "1"}
+}
+
+func unmuteCmd() []string {
+	if useAmixer {
+		return []string{"amixer", "-D", "pulse", "set", "Master", "unmute"}
+	}
+	return []string{"pactl", "set-sink-mute", "0", "0"}
+}