mistserver/lib/nal.h
2014-06-18 10:39:27 +02:00

45 lines
1.2 KiB
C++

#include <string>
#include <cstdio>
namespace h264 {
///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();
};
}//ns h264