45 lines
1.2 KiB
C++
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
|