整理代码

video/core/FrameSynchronizer.h

@@ -0,0 +1,58 @@
+#ifndef B6D2EB85_A2D9_4037_BDBB_5ADCDA3E3B01
+#define B6D2EB85_A2D9_4037_BDBB_5ADCDA3E3B01
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include "System.h"
+#include "util/ClassAssistant.h"
+#include <atomic>
+#include <cmath>
+#include <chrono>
+#include <mutex>
+#include <deque>
+
+namespace Video
+{
+namespace Core
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+class FrameSynchronizer
+{
+public:
+    FrameSynchronizer(const std::string& name);
+    ~FrameSynchronizer();
+
+    void syncFrame(uint64_t frameTs);
+
+    void reset();
+
+private:
+    class DriftPredictor
+    {
+    public:
+        DriftPredictor(size_t windowSize = 10);
+        void    update(int64_t drift);
+        int64_t predict();
+        void    reset();
+
+    private:
+        std::deque<int64_t> _samples;
+        size_t              _windowSize;
+        double              _lastPrediction;
+    };
+
+    READONLY_PROPERTY_DECLARE(name, std::string)
+
+    uint64_t       _baseClock;
+    uint64_t       _lastSysTS;
+    DriftPredictor _predictor;
+};
+}
+}
+#endif