Add documents and optimize build

src/recognizer.h

@@ -5,6 +5,7 @@
 #include <filesystem>
 #include <atomic>
 #include <thread>
+#include <queue>
 
 #include <emscripten/wasmfs.h>
 #include <emscripten/webaudio.h>
@@ -15,12 +16,17 @@
 extern void throwJS(const char* msg, bool err = false);
 namespace fs = std::filesystem;
 
+struct audioData {
+  float* addr{};
+  int len{};
+  audioData(int addr, int len);
+};
 struct recognizer {
   int index{};
   VoskRecognizer* rec{};
   recognizer(model* model, float sampleRate, int index);
   ~recognizer();
-  void acceptWaveForm(float* data, int len);
+  void acceptWaveForm(int addr, int len);
   void fireEv(const char* type, const char* content);
   void setSpkModel(spkModel* model);
   void setGrm(const std::string& grm);