Various fixes and improvements, backported from Pro version. Code by Erik Zandvliet.

lib/h264.h

@@ -0,0 +1,60 @@
+#include <deque>
+#include <string>
+
+#include "nal.h"
+
+namespace h264 {
+
+  std::deque<nalu::nalData> analysePackets(const char * data, unsigned long len);
+
+  ///Struct containing pre-calculated metadata of an SPS nal unit. Width and height in pixels, fps in Hz
+  struct SPSMeta {
+    unsigned int width;
+    unsigned int height;
+    double fps;
+  };
+
+  ///Class for analyzing generic nal units
+  class NAL {
+    public:
+      NAL();
+      NAL(std::string & InputData);
+      bool ReadData(std::string & InputData, bool raw = false);
+      std::string AnnexB(bool LongIntro = false);
+      std::string SizePrepended();
+      int Type();
+      std::string getData();
+    protected:
+      unsigned int chroma_format_idc;///<the value of chroma_format_idc
+      std::string MyData;///<The h264 nal unit data
+  };
+  //NAL class
+
+  ///Special instance of NAL class for analyzing SPS nal units
+  class SPS: public NAL {
+    public:
+      SPS(): NAL() {};
+      SPS(std::string & InputData, bool raw = false);
+      SPSMeta getCharacteristics();
+      void analyzeSPS();
+  };
+
+  ///Special instance of NAL class for analyzing PPS nal units
+  class PPS: public NAL {
+    public:
+      PPS(): NAL() {};
+      PPS(std::string & InputData): NAL(InputData) {};
+      void analyzePPS();
+  };
+
+
+  class sequenceParameterSet {
+    public:
+      sequenceParameterSet(const char * _data, unsigned long _dataLen);
+      SPSMeta getCharacteristics() const;
+    private:
+      const char * data;
+      unsigned long dataLen;
+  };
+
+}