fix: voice playback coordinate bug + debug logging + device name encoding

- messagedelegate: editorEvent now adjusts me->pos() by option.rect.topLeft()
- voiceplayback: enhanced debug logging for file open/decode/play
- messagelist: debug voice file path + exists check
- inputbar: debug mediaDir path on record
- sound_manager: debug in playRawPcm, decodeDeviceName() for mixed encodings
- voiceencoder: debug file write path

tools/chatgui/src/sound_manager.cpp

@@ -141,7 +141,11 @@ ma_context* SoundManager::context() {
 }
 
 void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels) {
-    if (!m_engine || !m_initialized) return;
+    if (!m_engine || !m_initialized) {
+        qWarning("SoundManager::playRawPcm: not initialized (engine=%p init=%d)", (void*)m_engine, m_initialized);
+        return;
+    }
+    qDebug("SoundManager::playRawPcm: %d samples %dHz %dch vol=%.2f", sampleCount, sampleRate, channels, m_volume);
 
     ma_audio_buffer_config bufCfg = ma_audio_buffer_config_init(
         ma_format_s16, (ma_uint32)channels, (ma_uint64)sampleCount, pcm, NULL);
@@ -165,7 +169,14 @@ 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);
+    qDebug("SoundManager::playRawPcm: started");
+}
+
+static QString decodeDeviceName(const char* name) {
+    QString s = QString::fromUtf8(name);
+    if (s.contains(QChar(0xFFFD)))
+        s = QString::fromLocal8Bit(name);
+    return s;
 }
 
 QVector<SoundManager::DeviceInfo> SoundManager::enumeratePlaybackDevices() {
@@ -177,7 +188,7 @@ QVector<SoundManager::DeviceInfo> SoundManager::enumeratePlaybackDevices() {
     ma_uint32 count = 0;
     if (ma_context_get_devices(ctx, &pDevices, &count, nullptr, nullptr) != MA_SUCCESS) return result;
     for (ma_uint32 i = 0; i < count; i++)
-        result.append({QString::fromLocal8Bit(pDevices[i].name), pDevices[i].isDefault != MA_FALSE});
+        result.append({decodeDeviceName(pDevices[i].name), pDevices[i].isDefault != MA_FALSE});
     return result;
 }
 
@@ -190,6 +201,6 @@ QVector<SoundManager::DeviceInfo> SoundManager::enumerateCaptureDevices() {
     ma_uint32 count = 0;
     if (ma_context_get_devices(ctx, nullptr, nullptr, &pDevices, &count) != MA_SUCCESS) return result;
     for (ma_uint32 i = 0; i < count; i++)
-        result.append({QString::fromLocal8Bit(pDevices[i].name), pDevices[i].isDefault != MA_FALSE});
+        result.append({decodeDeviceName(pDevices[i].name), pDevices[i].isDefault != MA_FALSE});
     return result;
 }