feat: voice playback delay compensation + waveform click-to-seek

tools/chatgui/src/sound_manager.cpp

@@ -153,6 +153,7 @@ void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRat
         return;
     }
     if (m_currentPcmSound) ma_sound_stop(m_currentPcmSound);
+    m_currentPcmSampleRate = sampleRate;
     DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG, "SoundManager::playRawPcm: %d samples %dHz %dch", sampleCount, sampleRate, channels);
 
     ma_audio_buffer_config bufCfg = ma_audio_buffer_config_init(
@@ -189,6 +190,11 @@ void SoundManager::resumeCurrentPcm() {
 
 void SoundManager::stopCurrentPcm() {
     if (m_currentPcmSound) ma_sound_stop(m_currentPcmSound);
+    m_currentPcmSampleRate = 0;
+}
+
+void SoundManager::seekCurrentPcm(unsigned long long pcmFrame) {
+    if (m_currentPcmSound) ma_sound_seek_to_pcm_frame(m_currentPcmSound, pcmFrame);
 }
 
 static QString decodeDeviceName(const char* name) {