fix(timestamp):add onProcess sync lock to make sure imgData be unique; issue[EYES-26]

src/mynteye/api/processor.cc

@@ -209,6 +209,7 @@ void Processor::Run() {
     }
     bool ok = false;
     try {
+      std::unique_lock<std::mutex> lk(mtx_data_process_unique_);
       if (callback_) {
         if (callback_(input_.get(), output_.get(), parent_)) {
           ok = true;

src/mynteye/api/processor.h

@@ -103,6 +103,7 @@ class Processor :
 
   bool input_ready_;
   std::mutex mtx_input_ready_;
+  std::mutex mtx_data_process_unique_;
   std::condition_variable cond_input_ready_;
 
   bool idle_;