fix: RMS mic level, 25ms timer, speaker test, overlay recording indicator

- AudioRecorder: peak replaced with RMS (sqrt mean of squares)
- AudioDeviceSettings: level meter timer 100ms -> 25ms
- SoundManager: playRawPcm uses ma_audio_buffer_ref instead of ma_decoder (fixes speaker test)
- InputBar: recording overlay positioned over text input, no layout shift
- messagelist: removed old recording indicator widget

tools/chatgui/src/audiodevicesettingspage.cpp

@@ -114,7 +114,7 @@ AudioDeviceSettingsPage::AudioDeviceSettingsPage(DbManager* db, QWidget* parent)
     layout->addStretch();
 
     m_levelTimer = new QTimer(this);
-    m_levelTimer->setInterval(100);
+    m_levelTimer->setInterval(25);
     connect(m_levelTimer, &QTimer::timeout, this, &AudioDeviceSettingsPage::onLevelTimer);
 }
 

tools/chatgui/src/audiorecorder.cpp

@@ -5,6 +5,7 @@
 #include <QDebug>
 #include <cstring>
 #include <cstdlib>
+#include <cmath>
 
 static AudioRecorder* g_recorder = nullptr;
 
@@ -20,12 +21,12 @@ void audioCaptureCallback(ma_device* pDevice, void* pOutput, const void* pInput,
     self->m_pcmBuffer.resize(cur + add);
     std::memcpy(self->m_pcmBuffer.data() + cur, src, add * sizeof(int16_t));
 
-    float maxAbs = 0.0f;
+    float sumSq = 0.0f;
     for (unsigned int i = 0; i < frameCount * (unsigned int)self->m_channels; i++) {
-        float v = (float)abs(src[i]) / 32768.0f;
-        if (v > maxAbs) maxAbs = v;
+        float v = (float)src[i] / 32768.0f;
+        sumSq += v * v;
     }
-    self->m_peakLevel = maxAbs;
+    self->m_peakLevel = sqrtf(sumSq / (float)(frameCount * self->m_channels));
 }
 
 AudioRecorder::AudioRecorder(QObject* parent)

tools/chatgui/src/inputbar.cpp

@@ -1,5 +1,7 @@
 #include "inputbar.h"
 #include "emojipanel.h"
+#include "audiorecorder.h"
+#include "voicemessageencoder.h"
 #include "debug_ui.h"
 #include <QDebug>
 #include <QTextEdit>
@@ -11,6 +13,8 @@
 #include <QFontMetrics>
 #include <QScrollBar>
 #include <QApplication>
+#include <QLabel>
+#include <QResizeEvent>
 
 static QPushButton *makeIconBtn(const QString &text, const QString &tooltip, QWidget *parent) {
     auto *btn = new QPushButton(text, parent);
@@ -99,6 +103,33 @@ InputBar::InputBar(EmojiPanel *emojiPanel, AudioRecorder *recorder, QWidget *par
             m_input->setFocus();
         });
     }
+
+    /* Recording overlay — appears over the text input during recording */
+    m_recordOverlay = new QWidget(this);
+    m_recordOverlay->setStyleSheet("background: rgba(231, 76, 60, 0.88); border-radius: 6px;");
+    m_recordOverlay->hide();
+    auto* roLayout = new QHBoxLayout(m_recordOverlay);
+    roLayout->setContentsMargins(12, 0, 8, 0);
+    roLayout->setSpacing(6);
+    m_recordLabel = new QLabel(m_recordOverlay);
+    m_recordLabel->setStyleSheet("color: white; font-size: 14px; font-weight: bold; background: transparent;");
+    roLayout->addWidget(m_recordLabel);
+    roLayout->addStretch();
+    m_cancelRecBtn = new QPushButton(QString::fromUtf8("\xE2\x9C\x95"), m_recordOverlay);
+    m_cancelRecBtn->setFixedSize(24, 24);
+    m_cancelRecBtn->setStyleSheet(
+        "QPushButton { border: none; color: white; font-size: 16px; background: transparent; }"
+        "QPushButton:hover { color: #fdd; }");
+    connect(m_cancelRecBtn, &QPushButton::clicked, this, [this]() {
+        if (m_recorder && m_recorder->isRecording()) m_recorder->stopRecording();
+    });
+    roLayout->addWidget(m_cancelRecBtn);
+
+    if (recorder) {
+        connect(recorder, &AudioRecorder::recordingStarted, this, &InputBar::showRecordOverlay);
+        connect(recorder, &AudioRecorder::recordingStopped, this, [this](int) { hideRecordOverlay(); });
+        connect(recorder, &AudioRecorder::durationChanged, this, &InputBar::updateRecordingUI);
+    }
 }
 
 bool InputBar::eventFilter(QObject *obj, QEvent *event) {
@@ -151,9 +182,6 @@ void InputBar::onSendClicked() {
     m_input->setFocus();
 }
 
-#include "audiorecorder.h"
-#include "voicemessageencoder.h"
-
 void InputBar::setRecordingContext(const QString& mediaDirBase, const QString& channelId) {
     m_mediaDirBase = mediaDirBase;
     m_channelIdForRecord = channelId;
@@ -197,3 +225,34 @@ void InputBar::onPttReleased() {
         emit sendVoiceMessage(filePath, durationMs);
     }
 }
+
+void InputBar::resizeEvent(QResizeEvent* event) {
+    QWidget::resizeEvent(event);
+    if (m_recordOverlay) {
+        QRect r = m_input->geometry();
+        int margin = 4;
+        m_recordOverlay->setGeometry(r.adjusted(margin, margin, -margin, -margin));
+        m_recordOverlay->raise();
+    }
+}
+
+void InputBar::showRecordOverlay() {
+    if (m_recordOverlay) {
+        m_recordOverlay->setGeometry(m_input->geometry().adjusted(4, 4, -4, -4));
+        m_recordOverlay->show();
+        m_recordOverlay->raise();
+        m_recordLabel->setText(QString::fromUtf8("\xF0\x9F\x94\xB4 Recording 0:00"));
+    }
+}
+
+void InputBar::hideRecordOverlay() {
+    if (m_recordOverlay) m_recordOverlay->hide();
+}
+
+void InputBar::updateRecordingUI(int ms) {
+    if (m_recordLabel) {
+        int secs = ms / 1000;
+        m_recordLabel->setText(QString::fromUtf8("\xF0\x9F\x94\xB4 Recording %1:%2")
+            .arg(secs / 60).arg(secs % 60, 2, 10, QChar('0')));
+    }
+}

tools/chatgui/src/inputbar.h

@@ -4,6 +4,7 @@
 
 class QTextEdit;
 class QPushButton;
+class QLabel;
 class EmojiPanel;
 class AudioRecorder;
 
@@ -21,12 +22,16 @@ signals:
 
 protected:
     bool eventFilter(QObject *obj, QEvent *event) override;
+    void resizeEvent(QResizeEvent* event) override;
 
 private slots:
     void onSendClicked();
     void adjustInputHeight();
     void onPttPressed();
     void onPttReleased();
+    void updateRecordingUI(int ms);
+    void showRecordOverlay();
+    void hideRecordOverlay();
 
 private:
     QTextEdit    *m_input;
@@ -34,6 +39,9 @@ private:
     QPushButton  *m_pttBtn;
     EmojiPanel   *m_emojiPanel;
     AudioRecorder *m_recorder;
+    QWidget      *m_recordOverlay = nullptr;
+    QLabel       *m_recordLabel = nullptr;
+    QPushButton  *m_cancelRecBtn = nullptr;
     bool m_pttActive = false;
     QString m_voiceFilePath;
     QString m_mediaDirBase;

tools/chatgui/src/messagelist.cpp

@@ -18,7 +18,6 @@
 #include <QApplication>
 #include <QDebug>
 #include <QFileInfo>
-#include <QLabel>
 #include <vector>
 #include <memory>
 
@@ -171,41 +170,6 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
     m_inputBar = new InputBar(m_emojiPanel, recorder, this);
     layout->addWidget(m_inputBar);
 
-    /* Recording indicator - hidden by default */
-    m_recordIndicator = new QWidget(this);
-    m_recordIndicator->setFixedHeight(28);
-    m_recordIndicator->hide();
-    auto* recLayout = new QHBoxLayout(m_recordIndicator);
-    recLayout->setContentsMargins(8, 2, 8, 2);
-    recLayout->setSpacing(6);
-    m_recordTimeLabel = new QLabel(m_recordIndicator);
-    m_recordTimeLabel->setStyleSheet("color: #e74c3c; font-size: 13px; font-weight: bold;");
-    recLayout->addWidget(m_recordTimeLabel);
-    recLayout->addStretch();
-    auto* cancelRecBtn = new QPushButton(QString::fromUtf8("\xE2\x9C\x95"), m_recordIndicator);
-    cancelRecBtn->setFixedSize(22, 22);
-    cancelRecBtn->setStyleSheet("QPushButton { border: none; color: #e74c3c; font-size: 14px; background: transparent; }");
-    connect(cancelRecBtn, &QPushButton::clicked, this, [this]() {
-        if (m_recorder && m_recorder->isRecording()) m_recorder->stopRecording();
-    });
-    recLayout->addWidget(cancelRecBtn);
-    layout->addWidget(m_recordIndicator);
-
-    if (recorder) {
-        connect(recorder, &AudioRecorder::recordingStarted, this, [this]() {
-            m_recordIndicator->show();
-            m_recordTimeLabel->setText(QString::fromUtf8("\xF0\x9F\x94\xB4 Recording 0:00"));
-        });
-        connect(recorder, &AudioRecorder::recordingStopped, this, [this](int) {
-            m_recordIndicator->hide();
-        });
-        connect(recorder, &AudioRecorder::durationChanged, this, [this](int ms) {
-            int secs = ms / 1000;
-            m_recordTimeLabel->setText(QString::fromUtf8("\xF0\x9F\x94\xB4 Recording %1:%2")
-                .arg(secs / 60).arg(secs % 60, 2, 10, QChar('0')));
-        });
-    }
-
     connect(m_inputBar, &InputBar::sendMessage, this, [this](const QString &text) {
         if (m_currentChannelId.isEmpty()) {
             qWarning("MessageList: no channel selected, message not sent");

tools/chatgui/src/messagelist.h

@@ -5,9 +5,9 @@
 #include <QHash>
 #include <QTimer>
 
-class QLabel;
 class ChatView;
 class InputBar;
+class InputBar;
 class EmojiPanel;
 class DbManager;
 class ChannelList;
@@ -45,11 +45,8 @@ private:
     bool                  m_wasAtBottom = false;
     QMap<quint64, QString> m_localNicks;
     AudioRecorder* m_recorder = nullptr;
-    QWidget* m_recordIndicator = nullptr;
-    QLabel* m_recordTimeLabel = nullptr;
 
     QString authorName(quint64 nodeId) const;
-    void updateRecordingUI();
     void restoreScrollPosition(const QString& channelId);
     void updateReadPosition();
 };

tools/chatgui/src/sound_manager.cpp

@@ -143,21 +143,21 @@ ma_context* SoundManager::context() {
 void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels) {
     if (!m_engine || !m_initialized) return;
 
-    ma_decoder_config decCfg = ma_decoder_config_init(ma_format_s16, (ma_uint32)channels, (ma_uint32)sampleRate);
-    ma_decoder* decoder = new ma_decoder;
-    ma_result r = ma_decoder_init_memory(pcm, (ma_uint64)sampleCount * channels * sizeof(int16_t), &decCfg, decoder);
+    ma_audio_buffer_ref* ref = new ma_audio_buffer_ref;
+    ma_result r = ma_audio_buffer_ref_init(ma_format_s16, (ma_uint32)channels,
+                                            pcm, (ma_uint64)sampleCount, ref);
     if (r != MA_SUCCESS) {
-        qWarning("SoundManager: PCM decoder init failed (%d)", r);
-        delete decoder;
+        qWarning("SoundManager: audio_buffer_ref_init failed (%d)", r);
+        delete ref;
         return;
     }
 
     ma_sound* sound = new ma_sound;
-    r = ma_sound_init_from_data_source(m_engine, (ma_data_source*)decoder, 0, nullptr, sound);
+    r = ma_sound_init_from_data_source(m_engine, (ma_data_source*)ref, 0, nullptr, sound);
     if (r != MA_SUCCESS) {
         qWarning("SoundManager: PCM sound init failed (%d)", r);
-        ma_decoder_uninit(decoder);
-        delete decoder;
+        ma_audio_buffer_ref_uninit(ref);
+        delete ref;
         delete sound;
         return;
     }
@@ -165,8 +165,6 @@ void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRat
     ma_sound_set_volume(sound, m_volume);
     ma_sound_start(sound);
     qDebug("SoundManager: playing PCM (%d samples, %dHz, %dch)", sampleCount, sampleRate, channels);
-
-    /* auto-cleanup after playback ends. Note: decoder+sound leak on early shutdown, acceptable for voice messages */
 }
 
 QVector<SoundManager::DeviceInfo> SoundManager::enumeratePlaybackDevices() {