feat: Implement TeamSpeak 3 client with connection management, event handling, and audio support.

cmd/tui/model.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 	"time"
 
+	"go-ts/pkg/audio"
 	"go-ts/pkg/ts3client"
 
 	tea "github.com/charmbracelet/bubbletea"
@@ -75,6 +76,14 @@ type Model struct {
 	// Voice activity
 	talkingClients map[uint16]bool // ClientID -> isTalking
 
+	// Audio state
+	audioPlayer   *audio.Player
+	audioCapturer *audio.Capturer
+	playbackVol   int  // 0-100
+	micLevel      int  // 0-100 (current input level)
+	isMuted       bool // Mic muted
+	isPTT         bool // Push-to-talk active
+
 	// Program reference for sending messages from event handlers
 	program *tea.Program
 }
@@ -99,6 +108,7 @@ func NewModel(serverAddr, nickname string) *Model {
 		chatMessages:   []ChatMessage{},
 		logMessages:    []string{"Starting..."},
 		talkingClients: make(map[uint16]bool),
+		playbackVol:    80, // Default 80% volume
 	}
 }
 
@@ -172,6 +182,8 @@ type errorMsg struct {
 	err string
 }
 
+type micLevelMsg int // Mic level 0-100
+
 type tickMsg time.Time
 
 // Update handles messages and user input
@@ -197,6 +209,43 @@ func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 					talking:  e.Talking,
 				})
 			})
+
+			// Handle incoming audio - play through speakers
+			m.client.On(ts3client.EventAudio, func(e *ts3client.AudioEvent) {
+				if m.audioPlayer != nil {
+					m.audioPlayer.PlayPCM(e.PCM)
+				}
+			})
+		}
+
+		// Initialize audio player
+		player, err := audio.NewPlayer()
+		if err != nil {
+			m.addLog("Audio player init failed: %v", err)
+		} else {
+			m.audioPlayer = player
+			m.audioPlayer.SetVolume(float32(m.playbackVol) / 100.0)
+			m.audioPlayer.Start()
+			m.addLog("Audio player initialized")
+		}
+
+		// Initialize audio capturer
+		capturer, err := audio.NewCapturer()
+		if err != nil {
+			m.addLog("Audio capturer init failed: %v", err)
+		} else {
+			m.audioCapturer = capturer
+			// Set callback to send audio to server when PTT is active
+			m.audioCapturer.SetCallback(func(samples []int16) {
+				if m.isPTT && m.client != nil && !m.isMuted {
+					m.client.SendAudio(samples)
+				}
+				// Update mic level for display
+				if m.program != nil {
+					m.program.Send(micLevelMsg(m.audioCapturer.GetLevel()))
+				}
+			})
+			m.addLog("Audio capturer initialized")
 		}
 
 		// Connect asynchronously
@@ -236,8 +285,19 @@ func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			}
 		}
 
-		// Continue ticking
+		// Update mic level when PTT is active (multiply for better visibility)
-		return m, tea.Tick(500*time.Millisecond, func(t time.Time) tea.Msg {
+		if m.isPTT && m.audioCapturer != nil {
+			level := m.audioCapturer.GetLevel() * 4 // Boost for visibility
+			if level > 100 {
+				level = 100
+			}
+			m.micLevel = level
+		} else {
+			m.micLevel = 0 // Reset when not transmitting
+		}
+
+		// Continue ticking (100ms for responsive mic level)
+		return m, tea.Tick(100*time.Millisecond, func(t time.Time) tea.Msg {
 			return tickMsg(t)
 		})
 
@@ -265,6 +325,11 @@ func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		}
 		return m, nil
 
+	case micLevelMsg:
+		// Update microphone level for display
+		m.micLevel = int(msg)
+		return m, nil
+
 	case logMsg:
 		// External log message
 		m.addLog("%s", string(msg))
@@ -315,12 +380,19 @@ func (m *Model) updateChannelList(channels []*ts3client.Channel) {
 }
 
 func (m *Model) handleKeyPress(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
-	// Global keys
+	// Global keys (work regardless of focus)
 	switch msg.String() {
 	case "ctrl+c", "q":
 		if m.client != nil {
 			m.client.Disconnect()
 		}
+		// Cleanup audio
+		if m.audioPlayer != nil {
+			m.audioPlayer.Close()
+		}
+		if m.audioCapturer != nil {
+			m.audioCapturer.Close()
+		}
 		return m, tea.Quit
 
 	case "tab":
@@ -328,9 +400,55 @@ func (m *Model) handleKeyPress(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.focus = (m.focus + 1) % 3
 		return m, nil
 
-	case "m":
+	case "m", "M":
-		// Toggle mute (would need to implement)
+		// Toggle mute
+		m.isMuted = !m.isMuted
+		if m.audioPlayer != nil {
+			m.audioPlayer.SetMuted(m.isMuted)
+		}
 		return m, nil
+
+	case "+", "=":
+		// Increase volume
+		m.playbackVol += 10
+		if m.playbackVol > 100 {
+			m.playbackVol = 100
+		}
+		if m.audioPlayer != nil {
+			m.audioPlayer.SetVolume(float32(m.playbackVol) / 100.0)
+		}
+		return m, nil
+
+	case "-", "_":
+		// Decrease volume
+		m.playbackVol -= 10
+		if m.playbackVol < 0 {
+			m.playbackVol = 0
+		}
+		if m.audioPlayer != nil {
+			m.audioPlayer.SetVolume(float32(m.playbackVol) / 100.0)
+		}
+		return m, nil
+
+	case "v", "V":
+		// Toggle voice (PTT) - V to start/stop transmitting
+		if m.focus != FocusInput {
+			m.isPTT = !m.isPTT
+			if m.isPTT {
+				// Start capturing when PTT enabled
+				if m.audioCapturer != nil {
+					m.audioCapturer.Start()
+				}
+				m.addLog("🎤 Transmitting...")
+			} else {
+				// Stop capturing when PTT disabled
+				if m.audioCapturer != nil {
+					m.audioCapturer.Stop()
+				}
+				m.addLog("🎤 Stopped transmitting")
+			}
+			return m, nil
+		}
 	}
 
 	// Focus-specific keys
@@ -419,26 +537,23 @@ func (m *Model) View() string {
 	}
 
 	// Styles
-	headerStyle := lipgloss.NewStyle().
+	// Layout: header(1) + panels + input(3) + help(1) = header + panels + 4
-		Bold(true).
+	// panels should be height - 5 (1 for header, 3 for input with border, 1 for help)
-		Foreground(lipgloss.Color("229")).
+	panelHeight := m.height - 7
-		Background(lipgloss.Color("57")).
-		Padding(0, 1).
-		Width(m.width)
 
 	channelPanelStyle := lipgloss.NewStyle().
 		Border(lipgloss.RoundedBorder()).
 		BorderForeground(lipgloss.Color("63")).
 		Padding(0, 1).
 		Width(m.width/3 - 2).
-		Height(m.height - 6)
+		Height(panelHeight)
 
 	chatPanelStyle := lipgloss.NewStyle().
 		Border(lipgloss.RoundedBorder()).
 		BorderForeground(lipgloss.Color("63")).
 		Padding(0, 1).
 		Width(m.width*2/3 - 2).
-		Height(m.height - 6)
+		Height(panelHeight)
 
 	inputStyle := lipgloss.NewStyle().
 		Border(lipgloss.NormalBorder()).
@@ -446,12 +561,8 @@ func (m *Model) View() string {
 		Padding(0, 1).
 		Width(m.width - 4)
 
-	// Header
+	// Header with status bar
-	status := "Connecting..."
+	header := m.renderStatusBar()
-	if m.connected {
-		status = fmt.Sprintf("Server: %s │ You: %s (ID: %d)", m.serverName, m.nickname, m.selfID)
-	}
-	header := headerStyle.Render(status)
 
 	// Channel panel
 	channelContent := m.renderChannels()
@@ -476,7 +587,7 @@ func (m *Model) View() string {
 	input := inputStyle.Render(inputContent)
 
 	// Footer help
-	help := lipgloss.NewStyle().Faint(true).Render("↑↓ navigate │ Enter join │ Tab switch │ q quit")
+	help := lipgloss.NewStyle().Faint(true).Render("↑↓ navigate │ Enter join │ Tab switch │ V talk │ M mute │ +/- vol │ q quit")
 
 	// Combine panels
 	panels := lipgloss.JoinHorizontal(lipgloss.Top, channelPanel, chatPanel)
@@ -489,6 +600,82 @@ func (m *Model) View() string {
 	)
 }
 
+// renderStatusBar renders the top status bar with ping, volume, and mic level
+func (m *Model) renderStatusBar() string {
+	headerStyle := lipgloss.NewStyle().
+		Bold(true).
+		Foreground(lipgloss.Color("229")).
+		Background(lipgloss.Color("57")).
+		Width(m.width)
+
+	if !m.connected {
+		return headerStyle.Render("[ Connecting... ]")
+	}
+
+	// Left: Server name (add padding manually)
+	leftPart := " " + m.serverName
+
+	// Center: Ping
+	ping := 0.0
+	if m.client != nil {
+		ping = m.client.GetPing()
+	}
+	centerPart := fmt.Sprintf("PING: %.0fms", ping)
+
+	// Right: Volume and Mic (add padding manually)
+	volBar := audio.LevelToBar(m.playbackVol, 6)
+	muteIcon := "VOL"
+	if m.isMuted {
+		muteIcon = "MUTE"
+	}
+	volPart := fmt.Sprintf("%s:%s%d%%", muteIcon, volBar, m.playbackVol)
+
+	micBar := audio.LevelToBar(m.micLevel, 6)
+	pttIcon := "MIC"
+	if m.isPTT {
+		pttIcon = "*TX*"
+	}
+	micPart := fmt.Sprintf("%s:%s", pttIcon, micBar)
+
+	rightPart := fmt.Sprintf("%s | %s ", volPart, micPart)
+
+	// Calculate spacing for centered ping
+	totalWidth := m.width
+	if totalWidth < 10 {
+		return ""
+	}
+	leftLen := lipgloss.Width(leftPart)
+	centerLen := lipgloss.Width(centerPart)
+	rightLen := lipgloss.Width(rightPart)
+
+	// Calculate spaces needed
+	leftSpace := (totalWidth - leftLen - centerLen - rightLen) / 2
+	rightSpace := totalWidth - leftLen - centerLen - rightLen - leftSpace
+
+	if leftSpace < 1 {
+		leftSpace = 1
+	}
+	if rightSpace < 1 {
+		rightSpace = 1
+	}
+
+	// Build the status line
+	spaces := func(n int) string {
+		if n <= 0 {
+			return ""
+		}
+		s := ""
+		for i := 0; i < n; i++ {
+			s += " "
+		}
+		return s
+	}
+
+	status := leftPart + spaces(leftSpace) + centerPart + spaces(rightSpace) + rightPart
+
+	return headerStyle.Render(status)
+}
+
 func (m *Model) renderChannels() string {
 	if len(m.channels) == 0 {
 		return "No channels..."

go.mod

@@ -9,19 +9,22 @@ require (
 	github.com/dgryski/go-quicklz v0.0.0-20151014073603-d7042a82d57e
 )
 
-require gopkg.in/hraban/opus.v2 v2.0.0-20230925203106-0188a62cb302
+require (
+	github.com/charmbracelet/bubbletea v1.3.10
+	github.com/charmbracelet/lipgloss v1.1.0
+	github.com/go-ole/go-ole v1.2.6
+	github.com/gorilla/websocket v1.5.3
+	github.com/moutend/go-wca v0.3.0
+	gopkg.in/hraban/opus.v2 v2.0.0-20230925203106-0188a62cb302
+)
 
 require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
-	github.com/charmbracelet/bubbles v0.21.0 // indirect
-	github.com/charmbracelet/bubbletea v1.3.10 // indirect
 	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
-	github.com/charmbracelet/lipgloss v1.1.0 // indirect
 	github.com/charmbracelet/x/ansi v0.10.1 // indirect
 	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect
 	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
-	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect

go.sum

@@ -2,8 +2,6 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
-github.com/charmbracelet/bubbles v0.21.0 h1:9TdC97SdRVg/1aaXNVWfFH3nnLAwOXr8Fn6u6mfQdFs=
-github.com/charmbracelet/bubbles v0.21.0/go.mod h1:HF+v6QUR4HkEpz62dx7ym2xc71/KBHg+zKwJtMw+qtg=
 github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=
 github.com/charmbracelet/bubbletea v1.3.10/go.mod h1:ORQfo0fk8U+po9VaNvnV95UPWA1BitP1E0N6xJPlHr4=
 github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc h1:4pZI35227imm7yK2bGPcfpFEmuY1gc2YSTShr4iJBfs=
@@ -20,6 +18,8 @@ github.com/dgryski/go-quicklz v0.0.0-20151014073603-d7042a82d57e h1:MhBotBstN1h/
 github.com/dgryski/go-quicklz v0.0.0-20151014073603-d7042a82d57e/go.mod h1:XLmYwGWgVzMPLlMmcNcWt3b5ixRabPLstWnPVEDRhzc=
 github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4=
 github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=
+github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
+github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
@@ -30,6 +30,8 @@ github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2J
 github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
 github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
 github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/moutend/go-wca v0.3.0 h1:IzhsQ44zBzMdT42xlBjiLSVya9cPYOoKx9E+yXVhFo8=
+github.com/moutend/go-wca v0.3.0/go.mod h1:7VrPO512jnjFGJ6rr+zOoCfiYjOHRPNfbttJuxAurcw=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=
 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
@@ -41,6 +43,9 @@ github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
+golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=

pkg/audio/capture.go

@@ -0,0 +1,261 @@
+package audio
+
+import (
+	"encoding/binary"
+	"fmt"
+	"sync"
+	"time"
+	"unsafe"
+
+	"github.com/go-ole/go-ole"
+	"github.com/moutend/go-wca/pkg/wca"
+)
+
+const captureFrameSamples = 960 // 20ms at 48kHz
+
+// Capturer handles WASAPI audio capture from microphone
+type Capturer struct {
+	client        *wca.IAudioClient
+	captureClient *wca.IAudioCaptureClient
+	waveFormat    *wca.WAVEFORMATEX
+	bufferSize    uint32
+	running       bool
+	mu            sync.Mutex
+	stopChan      chan struct{}
+
+	// Callback for captured audio (called with 960-sample frames)
+	onAudio func(samples []int16)
+
+	// Sample accumulation buffer
+	sampleBuffer []int16
+	bufferMu     sync.Mutex
+
+	// Current audio level (0-100)
+	currentLevel int
+	levelMu      sync.RWMutex
+}
+
+// NewCapturer creates a new WASAPI audio capturer
+func NewCapturer() (*Capturer, error) {
+	// Initialize COM (may already be initialized)
+	ole.CoInitializeEx(0, ole.COINIT_APARTMENTTHREADED)
+
+	// Get default capture endpoint (microphone)
+	var deviceEnumerator *wca.IMMDeviceEnumerator
+	if err := wca.CoCreateInstance(
+		wca.CLSID_MMDeviceEnumerator,
+		0,
+		wca.CLSCTX_ALL,
+		wca.IID_IMMDeviceEnumerator,
+		&deviceEnumerator,
+	); err != nil {
+		return nil, fmt.Errorf("failed to create device enumerator: %w", err)
+	}
+	defer deviceEnumerator.Release()
+
+	var device *wca.IMMDevice
+	if err := deviceEnumerator.GetDefaultAudioEndpoint(wca.ECapture, wca.EConsole, &device); err != nil {
+		return nil, fmt.Errorf("failed to get default capture device: %w", err)
+	}
+	defer device.Release()
+
+	// Activate audio client
+	var audioClient *wca.IAudioClient
+	if err := device.Activate(wca.IID_IAudioClient, wca.CLSCTX_ALL, nil, &audioClient); err != nil {
+		return nil, fmt.Errorf("failed to activate audio client: %w", err)
+	}
+
+	// Set up format for 48kHz mono 16-bit (TeamSpeak format)
+	waveFormat := &wca.WAVEFORMATEX{
+		WFormatTag:      wca.WAVE_FORMAT_PCM,
+		NChannels:       1,
+		NSamplesPerSec:  48000,
+		WBitsPerSample:  16,
+		NBlockAlign:     2,
+		NAvgBytesPerSec: 96000,
+		CbSize:          0,
+	}
+
+	// Initialize in shared mode - 100ms buffer
+	duration := wca.REFERENCE_TIME(100 * 10000) // 100ms in 100-nanosecond units
+	if err := audioClient.Initialize(
+		wca.AUDCLNT_SHAREMODE_SHARED,
+		wca.AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM|wca.AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY,
+		duration,
+		0,
+		waveFormat,
+		nil,
+	); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to initialize audio client: %w", err)
+	}
+
+	// Get buffer size
+	var bufferSize uint32
+	if err := audioClient.GetBufferSize(&bufferSize); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to get buffer size: %w", err)
+	}
+
+	// Get capture client
+	var captureClient *wca.IAudioCaptureClient
+	if err := audioClient.GetService(wca.IID_IAudioCaptureClient, &captureClient); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to get capture client: %w", err)
+	}
+
+	return &Capturer{
+		client:        audioClient,
+		captureClient: captureClient,
+		waveFormat:    waveFormat,
+		bufferSize:    bufferSize,
+		stopChan:      make(chan struct{}),
+		sampleBuffer:  make([]int16, 0, captureFrameSamples*50), // ~1 second buffer
+	}, nil
+}
+
+// SetCallback sets the callback for captured audio (receives 960-sample frames)
+func (c *Capturer) SetCallback(fn func(samples []int16)) {
+	c.mu.Lock()
+	c.onAudio = fn
+	c.mu.Unlock()
+}
+
+// Start begins audio capture
+func (c *Capturer) Start() error {
+	c.mu.Lock()
+	if c.running {
+		c.mu.Unlock()
+		return nil
+	}
+	c.running = true
+	c.stopChan = make(chan struct{}) // Recreate channel for each start
+	c.mu.Unlock()
+
+	if err := c.client.Start(); err != nil {
+		return fmt.Errorf("failed to start audio client: %w", err)
+	}
+
+	go c.captureLoop()
+	return nil
+}
+
+// Stop stops audio capture
+func (c *Capturer) Stop() {
+	c.mu.Lock()
+	if !c.running {
+		c.mu.Unlock()
+		return
+	}
+	c.running = false
+	c.mu.Unlock()
+
+	close(c.stopChan)
+	c.client.Stop()
+}
+
+// Close releases all resources
+func (c *Capturer) Close() {
+	c.Stop()
+	if c.captureClient != nil {
+		c.captureClient.Release()
+	}
+	if c.client != nil {
+		c.client.Release()
+	}
+}
+
+// GetLevel returns the current audio input level (0-100)
+func (c *Capturer) GetLevel() int {
+	c.levelMu.RLock()
+	defer c.levelMu.RUnlock()
+	return c.currentLevel
+}
+
+// IsRunning returns whether capture is active
+func (c *Capturer) IsRunning() bool {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return c.running
+}
+
+func (c *Capturer) captureLoop() {
+	ticker := time.NewTicker(10 * time.Millisecond) // Check more often than 20ms
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-c.stopChan:
+			return
+		case <-ticker.C:
+			c.readFromBuffer()
+		}
+	}
+}
+
+func (c *Capturer) readFromBuffer() {
+	// Read all available packets
+	for {
+		var packetLength uint32
+		if err := c.captureClient.GetNextPacketSize(&packetLength); err != nil {
+			return
+		}
+
+		if packetLength == 0 {
+			break
+		}
+
+		var buffer *byte
+		var numFrames uint32
+		var flags uint32
+		if err := c.captureClient.GetBuffer(&buffer, &numFrames, &flags, nil, nil); err != nil {
+			return
+		}
+
+		if numFrames == 0 {
+			c.captureClient.ReleaseBuffer(numFrames)
+			continue
+		}
+
+		samples := make([]int16, numFrames)
+		bufSlice := unsafe.Slice(buffer, numFrames*2)
+
+		for i := uint32(0); i < numFrames; i++ {
+			samples[i] = int16(binary.LittleEndian.Uint16(bufSlice[i*2:]))
+		}
+
+		c.captureClient.ReleaseBuffer(numFrames)
+
+		// Skip silent buffers
+		if flags&wca.AUDCLNT_BUFFERFLAGS_SILENT != 0 {
+			continue
+		}
+
+		// Add to sample buffer
+		c.bufferMu.Lock()
+		c.sampleBuffer = append(c.sampleBuffer, samples...)
+
+		// Calculate level from latest samples
+		level := CalculateRMSLevel(samples)
+		c.levelMu.Lock()
+		c.currentLevel = level
+		c.levelMu.Unlock()
+
+		// Send complete 960-sample frames
+		for len(c.sampleBuffer) >= captureFrameSamples {
+			frame := make([]int16, captureFrameSamples)
+			copy(frame, c.sampleBuffer[:captureFrameSamples])
+			c.sampleBuffer = c.sampleBuffer[captureFrameSamples:]
+
+			// Call callback with the frame
+			c.mu.Lock()
+			callback := c.onAudio
+			c.mu.Unlock()
+
+			if callback != nil {
+				callback(frame)
+			}
+		}
+		c.bufferMu.Unlock()
+	}
+}

pkg/audio/level.go

@@ -0,0 +1,100 @@
+package audio
+
+import (
+	"math"
+)
+
+// CalculateRMSLevel calculates the RMS level of PCM samples and returns 0-100
+func CalculateRMSLevel(samples []int16) int {
+	if len(samples) == 0 {
+		return 0
+	}
+
+	var sum float64
+	for _, s := range samples {
+		sum += float64(s) * float64(s)
+	}
+
+	rms := math.Sqrt(sum / float64(len(samples)))
+	// Normalize to 0-100 (max int16 is 32767)
+	level := int(rms / 32767.0 * 100.0)
+	if level > 100 {
+		level = 100
+	}
+	return level
+}
+
+// CalculatePeakLevel returns the peak level of PCM samples as 0-100
+func CalculatePeakLevel(samples []int16) int {
+	if len(samples) == 0 {
+		return 0
+	}
+
+	var peak int16
+	for _, s := range samples {
+		if s < 0 {
+			s = -s
+		}
+		if s > peak {
+			peak = s
+		}
+	}
+
+	return int(float64(peak) / 32767.0 * 100.0)
+}
+
+// LevelToBar converts a 0-100 level to a visual bar string
+func LevelToBar(level, width int) string {
+	if level < 0 {
+		level = 0
+	}
+	if level > 100 {
+		level = 100
+	}
+
+	filled := level * width / 100
+	empty := width - filled
+
+	bar := ""
+	for i := 0; i < filled; i++ {
+		bar += "█"
+	}
+	for i := 0; i < empty; i++ {
+		bar += "░"
+	}
+
+	return bar
+}
+
+// LevelToMeter converts a 0-100 level to a visual VU meter with varying heights
+func LevelToMeter(level, width int) string {
+	if level < 0 {
+		level = 0
+	}
+	if level > 100 {
+		level = 100
+	}
+
+	// Use block characters of varying heights
+	blocks := []rune{'░', '▁', '▂', '▃', '▄', '▅', '▆', '▇', '█'}
+
+	meter := ""
+	for i := 0; i < width; i++ {
+		// Each position represents a portion of the level
+		threshold := (i + 1) * 100 / width
+		if level >= threshold {
+			meter += string(blocks[8]) // Full
+		} else if level >= threshold-10 {
+			// Partial - calculate which block to use
+			partial := (level - (threshold - 10)) * 8 / 10
+			if partial < 0 {
+				partial = 0
+			}
+			meter += string(blocks[partial])
+		} else {
+			meter += string(blocks[0]) // Empty
+		}
+	}
+
+	return meter
+}

pkg/audio/playback.go

@@ -0,0 +1,286 @@
+package audio
+
+import (
+	"encoding/binary"
+	"fmt"
+	"sync"
+	"time"
+	"unsafe"
+
+	"github.com/go-ole/go-ole"
+	"github.com/moutend/go-wca/pkg/wca"
+)
+
+// Player handles WASAPI audio playback
+type Player struct {
+	client       *wca.IAudioClient
+	renderClient *wca.IAudioRenderClient
+	waveFormat   *wca.WAVEFORMATEX
+	bufferSize   uint32
+	volume       float32
+	muted        bool
+	mu           sync.Mutex
+	running      bool
+	stopChan     chan struct{}
+
+	// Audio buffer - accumulates incoming audio
+	audioBuffer []int16
+	bufferMu    sync.Mutex
+
+	// Frame queue (960 samples = 20ms at 48kHz)
+	frameQueue chan []int16
+}
+
+const frameSamples = 960 // 20ms at 48kHz
+
+// NewPlayer creates a new WASAPI audio player
+func NewPlayer() (*Player, error) {
+	// Initialize COM using go-ole
+	if err := ole.CoInitializeEx(0, ole.COINIT_APARTMENTTHREADED); err != nil {
+		// Ignore if already initialized
+	}
+
+	// Get default audio endpoint
+	var deviceEnumerator *wca.IMMDeviceEnumerator
+	if err := wca.CoCreateInstance(
+		wca.CLSID_MMDeviceEnumerator,
+		0,
+		wca.CLSCTX_ALL,
+		wca.IID_IMMDeviceEnumerator,
+		&deviceEnumerator,
+	); err != nil {
+		return nil, fmt.Errorf("failed to create device enumerator: %w", err)
+	}
+	defer deviceEnumerator.Release()
+
+	var device *wca.IMMDevice
+	if err := deviceEnumerator.GetDefaultAudioEndpoint(wca.ERender, wca.EConsole, &device); err != nil {
+		return nil, fmt.Errorf("failed to get default render device: %w", err)
+	}
+	defer device.Release()
+
+	// Activate audio client
+	var audioClient *wca.IAudioClient
+	if err := device.Activate(wca.IID_IAudioClient, wca.CLSCTX_ALL, nil, &audioClient); err != nil {
+		return nil, fmt.Errorf("failed to activate audio client: %w", err)
+	}
+
+	// Set up format for 48kHz mono 16-bit (TeamSpeak format)
+	waveFormat := &wca.WAVEFORMATEX{
+		WFormatTag:      wca.WAVE_FORMAT_PCM,
+		NChannels:       1,
+		NSamplesPerSec:  48000,
+		WBitsPerSample:  16,
+		NBlockAlign:     2,
+		NAvgBytesPerSec: 96000,
+		CbSize:          0,
+	}
+
+	// Initialize in shared mode - 100ms buffer
+	duration := wca.REFERENCE_TIME(100 * 10000) // 100ms in 100-nanosecond units
+	if err := audioClient.Initialize(
+		wca.AUDCLNT_SHAREMODE_SHARED,
+		wca.AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM|wca.AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY,
+		duration,
+		0,
+		waveFormat,
+		nil,
+	); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to initialize audio client: %w", err)
+	}
+
+	// Get buffer size
+	var bufferSize uint32
+	if err := audioClient.GetBufferSize(&bufferSize); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to get buffer size: %w", err)
+	}
+
+	// Get render client
+	var renderClient *wca.IAudioRenderClient
+	if err := audioClient.GetService(wca.IID_IAudioRenderClient, &renderClient); err != nil {
+		audioClient.Release()
+		return nil, fmt.Errorf("failed to get render client: %w", err)
+	}
+
+	return &Player{
+		client:       audioClient,
+		renderClient: renderClient,
+		waveFormat:   waveFormat,
+		bufferSize:   bufferSize,
+		volume:       1.0,
+		muted:        false,
+		stopChan:     make(chan struct{}),
+		audioBuffer:  make([]int16, 0, frameSamples*50), // ~1 second buffer
+		frameQueue:   make(chan []int16, 100),           // ~2 seconds of frames
+	}, nil
+}
+
+// Start begins audio playback
+func (p *Player) Start() error {
+	p.mu.Lock()
+	if p.running {
+		p.mu.Unlock()
+		return nil
+	}
+	p.running = true
+	p.mu.Unlock()
+
+	if err := p.client.Start(); err != nil {
+		return fmt.Errorf("failed to start audio client: %w", err)
+	}
+
+	// Playback loop writes frames from queue to WASAPI
+	go p.playbackLoop()
+
+	return nil
+}
+
+// Stop stops audio playback
+func (p *Player) Stop() {
+	p.mu.Lock()
+	if !p.running {
+		p.mu.Unlock()
+		return
+	}
+	p.running = false
+	p.mu.Unlock()
+
+	close(p.stopChan)
+	p.client.Stop()
+}
+
+// Close releases all resources
+func (p *Player) Close() {
+	p.Stop()
+	if p.renderClient != nil {
+		p.renderClient.Release()
+	}
+	if p.client != nil {
+		p.client.Release()
+	}
+	ole.CoUninitialize()
+}
+
+// PlayPCM queues PCM audio for playback
+// Accumulates samples and queues complete 960-sample frames
+func (p *Player) PlayPCM(samples []int16) {
+	if p.muted {
+		return
+	}
+
+	// Apply volume
+	adjusted := samples
+	if p.volume != 1.0 {
+		adjusted = make([]int16, len(samples))
+		for i, s := range samples {
+			adjusted[i] = int16(float32(s) * p.volume)
+		}
+	}
+
+	p.bufferMu.Lock()
+	p.audioBuffer = append(p.audioBuffer, adjusted...)
+
+	// Queue complete 960-sample frames
+	for len(p.audioBuffer) >= frameSamples {
+		frame := make([]int16, frameSamples)
+		copy(frame, p.audioBuffer[:frameSamples])
+		p.audioBuffer = p.audioBuffer[frameSamples:]
+
+		select {
+		case p.frameQueue <- frame:
+		default:
+			// Queue full, drop oldest frame
+			select {
+			case <-p.frameQueue:
+			default:
+			}
+			p.frameQueue <- frame
+		}
+	}
+	p.bufferMu.Unlock()
+}
+
+// SetVolume sets playback volume (0.0 to 1.0)
+func (p *Player) SetVolume(vol float32) {
+	if vol < 0 {
+		vol = 0
+	}
+	if vol > 1.0 {
+		vol = 1.0
+	}
+	p.mu.Lock()
+	p.volume = vol
+	p.mu.Unlock()
+}
+
+// GetVolume returns current volume (0.0 to 1.0)
+func (p *Player) GetVolume() float32 {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	return p.volume
+}
+
+// SetMuted sets mute state
+func (p *Player) SetMuted(muted bool) {
+	p.mu.Lock()
+	p.muted = muted
+	p.mu.Unlock()
+}
+
+// IsMuted returns mute state
+func (p *Player) IsMuted() bool {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	return p.muted
+}
+
+func (p *Player) playbackLoop() {
+	// Use 20ms ticker matching TeamSpeak frame rate
+	ticker := time.NewTicker(20 * time.Millisecond)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-p.stopChan:
+			return
+		case <-ticker.C:
+			p.writeFrame()
+		}
+	}
+}
+
+func (p *Player) writeFrame() {
+	// Get current padding (samples already in buffer)
+	var padding uint32
+	if err := p.client.GetCurrentPadding(&padding); err != nil {
+		return
+	}
+
+	available := p.bufferSize - padding
+	if available < frameSamples {
+		return // Not enough space for a full frame
+	}
+
+	// Try to get a frame from the queue
+	select {
+	case frame := <-p.frameQueue:
+		var buffer *byte
+		if err := p.renderClient.GetBuffer(frameSamples, &buffer); err != nil {
+			return
+		}
+
+		// Write frame to WASAPI buffer
+		bufSlice := unsafe.Slice(buffer, frameSamples*2)
+		for i := 0; i < frameSamples; i++ {
+			binary.LittleEndian.PutUint16(bufSlice[i*2:], uint16(frame[i]))
+		}
+
+		p.renderClient.ReleaseBuffer(frameSamples, 0)
+
+	default:
+		// No audio available - optionally write silence
+		// (skip for now to avoid crackling)
+	}
+}

pkg/ts3client/client.go

@@ -269,6 +269,14 @@ func (c *Client) IsConnected() bool {
 	return c.connected
 }
 
+// GetPing returns the current RTT in milliseconds
+func (c *Client) GetPing() float64 {
+	if c.internal == nil {
+		return 0
+	}
+	return c.internal.PingRTT
+}
+
 // handleInternalEvent processes events from the internal client
 func (c *Client) handleInternalEvent(eventType string, data map[string]any) {
 	switch eventType {