init

Signed-off-by: Hadi <[email protected]>

internal/audio/devices.go

@@ -0,0 +1,99 @@
+package audio
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// Device is one physical/virtual audio sink (output) or source (input), as
+// listed under wpctl status's Sinks/Sources sections.
+type Device struct {
+	ID      string
+	Name    string
+	Default bool
+	Volume  int // 0-100
+	Muted   bool
+}
+
+// ListSinks returns the available audio output devices.
+func ListSinks() ([]Device, error) {
+	return listDevices("Sinks:")
+}
+
+// ListSources returns the available audio input devices.
+func ListSources() ([]Device, error) {
+	return listDevices("Sources:")
+}
+
+func listDevices(header string) ([]Device, error) {
+	out, err := status()
+	if err != nil {
+		return nil, err
+	}
+	entries := parseSection(out, header)
+	devices := make([]Device, 0, len(entries))
+	for _, e := range entries {
+		devices = append(devices, Device{
+			ID:      e.ID,
+			Name:    e.Name,
+			Default: e.Default,
+			Volume:  e.Volume,
+			Muted:   e.Muted,
+		})
+	}
+	return devices, nil
+}
+
+var volumeLineRe = regexp.MustCompile(`^Volume:\s+([0-9.]+)(\s+\[MUTED\])?`)
+
+// GetVolume returns id's current volume (0-100) and mute state.
+func GetVolume(id string) (int, bool, error) {
+	out, err := run("get-volume", id)
+	if err != nil {
+		return 0, false, err
+	}
+	m := volumeLineRe.FindStringSubmatch(strings.TrimSpace(out))
+	if m == nil {
+		return 0, false, fmt.Errorf("unexpected wpctl get-volume output: %q", out)
+	}
+	v, err := strconv.ParseFloat(m[1], 64)
+	if err != nil {
+		return 0, false, err
+	}
+	return int(v*100 + 0.5), m[2] != "", nil
+}
+
+// SetVolume sets id's volume to an absolute percentage, clamped to [0, 100].
+func SetVolume(id string, pct int) error {
+	if pct < 0 {
+		pct = 0
+	} else if pct > 100 {
+		pct = 100
+	}
+	_, err := run("set-volume", id, strconv.Itoa(pct)+"%")
+	return err
+}
+
+// SetMute sets id's mute state explicitly.
+func SetMute(id string, mute bool) error {
+	state := "0"
+	if mute {
+		state = "1"
+	}
+	_, err := run("set-mute", id, state)
+	return err
+}
+
+// ToggleMute flips id's current mute state.
+func ToggleMute(id string) error {
+	_, err := run("set-mute", id, "toggle")
+	return err
+}
+
+// SetDefault makes id the default sink or source for its kind.
+func SetDefault(id string) error {
+	_, err := run("set-default", id)
+	return err
+}