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