Adopt decoded voice buffers without large copies on the Qt thread

tools/chatgui/src/sound_manager.cpp

@@ -46,6 +46,7 @@ void SoundManager::clearCurrentPcm() {
         ma_audio_buffer_uninit(buf); delete buf; m_currentPcmBuffer = nullptr;
     }
     m_currentPcmSampleRate = 0;
+    m_currentPcmOwner.reset();
 }
 
 void SoundManager::shutdown() {
@@ -200,13 +201,15 @@ ma_context* SoundManager::context() {
     return m_context;
 }
 
-void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels) {
+void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels,
+                             std::shared_ptr<std::vector<int16_t>> owner) {
     if (!m_engine || !m_initialized) {
         DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "SoundManager::playRawPcm: not initialized (engine=%p init=%d)",
                    (void*)m_engine, (int)m_initialized);
         return;
     }
     clearCurrentPcm();
+    m_currentPcmOwner = std::move(owner);
     m_currentPcmSampleRate = sampleRate;
     DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG, "SoundManager::playRawPcm: %d samples %dHz %dch volume=%.2f",
                 sampleCount, sampleRate, channels, m_volume);
@@ -215,7 +218,7 @@ void SoundManager::playRawPcm(const int16_t* pcm, int sampleCount, int sampleRat
         ma_format_s16, (ma_uint32)channels, (ma_uint64)sampleCount, pcm, NULL);
     ma_audio_buffer* buf = new ma_audio_buffer;
     m_currentPcmBuffer = buf;
-    ma_result r = ma_audio_buffer_init_copy(&bufCfg, buf);
+    ma_result r = m_currentPcmOwner ? ma_audio_buffer_init(&bufCfg, buf) : ma_audio_buffer_init_copy(&bufCfg, buf);
     if (r != MA_SUCCESS) {
         DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "SoundManager: audio_buffer_init_copy failed (%d)", r);
         delete buf; m_currentPcmBuffer = nullptr;

tools/chatgui/src/sound_manager.h

@@ -5,6 +5,7 @@
 #include <QString>
 #include <QByteArray>
 #include <vector>
+#include <memory>
 #include <cstdint>
 
 struct ma_engine;
@@ -40,7 +41,9 @@ public:
 
     ma_context* context();
 
-    void playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels);
+    /* owner удерживает готовый PCM без копии в GUI; без owner короткие буферы копируются. */
+    void playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels,
+                    std::shared_ptr<std::vector<int16_t>> owner = {});
     void pauseCurrentPcm();
     void resumeCurrentPcm();
     void stopCurrentPcm();
@@ -73,6 +76,7 @@ private:
     ma_sound* m_currentPcmSound = nullptr;
     void* m_currentPcmBuffer = nullptr;
     int m_currentPcmSampleRate = 0;
+    std::shared_ptr<std::vector<int16_t>> m_currentPcmOwner;
     bool m_initialized = false;
     bool m_enabled = true;
     float m_volume = 0.8f;