202 lines
8 KiB
C++
202 lines
8 KiB
C++
/// \file ts_packet.h
|
|
/// Holds all headers for the TS Namespace.
|
|
|
|
#pragma once
|
|
#include <string>
|
|
#include <map>
|
|
#include <cmath>
|
|
#include <stdint.h>//for uint64_t
|
|
#include <iostream>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <algorithm>
|
|
#include "dtsc.h"
|
|
#include "checksum.h"
|
|
|
|
/// Holds all TS processing related code.
|
|
namespace TS {
|
|
|
|
///Class for reading and writing TS Streams. The class is capable of analyzing a packet of 188 bytes
|
|
///and calculating key values
|
|
class Packet {
|
|
public:
|
|
//Constructors and fillers
|
|
Packet();
|
|
Packet(const Packet & rhs);
|
|
~Packet();
|
|
bool FromPointer(const char * data);
|
|
bool FromFile(FILE * data);
|
|
|
|
//Base properties
|
|
void setPID(int NewPID);
|
|
unsigned int getPID() const;
|
|
void setContinuityCounter(int NewContinuity);
|
|
int getContinuityCounter() const;
|
|
void setPCR(int64_t NewVal);
|
|
int64_t getPCR() const;
|
|
int64_t getOPCR() const;
|
|
void setAdaptationField(int NewVal);
|
|
int getAdaptationField() const;
|
|
int getAdaptationFieldLen() const;
|
|
unsigned int getTransportScramblingControl() const;
|
|
|
|
//Flags
|
|
void setUnitStart(bool newVal);
|
|
bool getUnitStart() const;
|
|
void setRandomAccess(bool newVal);
|
|
bool getRandomAccess() const;
|
|
|
|
void setDiscontinuity(bool newVal);
|
|
bool hasDiscontinuity() const;
|
|
bool hasPCR() const;
|
|
bool hasOPCR() const;
|
|
bool hasSplicingPoint() const;
|
|
bool hasTransportError() const;
|
|
bool hasPriority() const;
|
|
bool hasESpriority() const;
|
|
|
|
//Helper functions
|
|
operator bool() const;
|
|
bool isPMT() const;
|
|
void clear();
|
|
void setDefaultPAT();
|
|
unsigned int getDataSize() const;
|
|
|
|
unsigned int getBytesFree() const;
|
|
int fillFree(const char * PackageData, int maxLen);
|
|
void addStuffing();
|
|
void updPos(unsigned int newPos);
|
|
|
|
//PES helpers
|
|
static std::string & getPESVideoLeadIn(unsigned int len, unsigned long long PTS, unsigned long long offset, bool isAligned);
|
|
static std::string & getPESAudioLeadIn(unsigned int len, unsigned long long PTS);
|
|
|
|
//Printers and writers
|
|
std::string toPrettyString(size_t indent = 0, int detailLevel = 3) const;
|
|
const char * getPayload() const;
|
|
int getPayloadLength() const;
|
|
const char * checkAndGetBuffer() const;
|
|
|
|
protected:
|
|
char strBuf[189];
|
|
unsigned int pos;
|
|
};
|
|
|
|
class ProgramAssociationTable : public Packet {
|
|
public:
|
|
ProgramAssociationTable & operator = (const Packet & rhs);
|
|
char getOffset() const;
|
|
char getTableId() const;
|
|
short getSectionLength() const;
|
|
short getTransportStreamId() const;
|
|
char getVersionNumber() const;
|
|
bool getCurrentNextIndicator() const;
|
|
char getSectionNumber() const;
|
|
char getLastSectionNumber() const;
|
|
short getProgramCount() const;
|
|
short getProgramNumber(short index) const;
|
|
short getProgramPID(short index) const;
|
|
int getCRC() const;
|
|
void parsePIDs();
|
|
std::string toPrettyString(size_t indent) const;
|
|
};
|
|
|
|
class ProgramMappingEntry {
|
|
public:
|
|
ProgramMappingEntry(char * begin, char * end);
|
|
|
|
operator bool() const;
|
|
|
|
int getStreamType() const;
|
|
void setStreamType(int newType);
|
|
std::string getCodec() const;
|
|
std::string getStreamTypeString() const;
|
|
int getElementaryPid() const;
|
|
void setElementaryPid(int newElementaryPid);
|
|
int getESInfoLength() const;
|
|
const char * getESInfo() const;
|
|
void setESInfo(const std::string & newInfo);
|
|
void advance();
|
|
private:
|
|
char* data;
|
|
char* boundary;
|
|
};
|
|
|
|
class ProgramMappingTable : public Packet {
|
|
public:
|
|
ProgramMappingTable();
|
|
ProgramMappingTable & operator = (const Packet & rhs);
|
|
char getOffset() const;
|
|
void setOffset(char newVal);
|
|
char getTableId() const;
|
|
void setTableId(char newVal);
|
|
short getSectionLength() const;
|
|
void setSectionLength(short newVal);
|
|
short getProgramNumber() const;
|
|
void setProgramNumber(short newVal);
|
|
char getVersionNumber() const;
|
|
void setVersionNumber(char newVal);
|
|
bool getCurrentNextIndicator() const;
|
|
void setCurrentNextIndicator(bool newVal);
|
|
char getSectionNumber() const;
|
|
void setSectionNumber(char newVal);
|
|
char getLastSectionNumber() const;
|
|
void setLastSectionNumber(char newVal);
|
|
short getPCRPID() const;
|
|
void setPCRPID(short newVal);
|
|
short getProgramInfoLength() const;
|
|
void setProgramInfoLength(short newVal);
|
|
ProgramMappingEntry getEntry(int index) const;
|
|
int getCRC() const;
|
|
void calcCRC();
|
|
std::string toPrettyString(size_t indent) const;
|
|
};
|
|
|
|
/// Constructs an audio header to be used on each audio frame.
|
|
/// The length of this header will ALWAYS be 7 bytes, and has to be
|
|
/// prepended on each audio frame.
|
|
/// \param FrameLen the length of the current audio frame.
|
|
/// \param initData A string containing the initalization data for this track's codec.
|
|
static inline std::string getAudioHeader(int FrameLen, std::string initData) {
|
|
char StandardHeader[7] = {0xFF, 0xF1, 0x00, 0x00, 0x00, 0x1F, 0xFC};
|
|
FrameLen += 7;
|
|
StandardHeader[2] = ((((initData[0] >> 3) - 1) << 6) & 0xC0); //AAC Profile - 1 ( First two bits )
|
|
StandardHeader[2] |= ((((initData[0] & 0x07) << 1) | ((initData[1] >> 7) & 0x01)) << 2); //AAC Frequency Index
|
|
StandardHeader[2] |= ((initData[1] & 0x20) >> 5); //AAC Channel Config
|
|
StandardHeader[3] = ((initData[1] & 0x18) << 3); //AAC Channel Config (cont.)
|
|
StandardHeader[3] |= ((FrameLen & 0x00001800) >> 11);
|
|
StandardHeader[4] = ((FrameLen & 0x000007F8) >> 3);
|
|
StandardHeader[5] |= ((FrameLen & 0x00000007) << 5);
|
|
return std::string(StandardHeader, 7);
|
|
}
|
|
|
|
|
|
/// A standard Program Association Table, as generated by FFMPEG.
|
|
/// Seems to be independent of the stream.
|
|
//0x47 = sync byte
|
|
//0x4000 = transport error(1) = 0, payload unit start(1) = 1, priority(1) = 0, PID(13) = 0
|
|
//0x10 = transportscrambling(2) = 0, adaptation(2) = 1, continuity(4) = 0
|
|
//0x00 = pointer = 0
|
|
//0x00 = table ID = 0 = PAT
|
|
//0xB00D = section syntax(1) = 1, 0(1)=0, reserved(2) = 3, section_len(12) = 13
|
|
//0x0001 = transport stream id = 1
|
|
//0xC1 = reserved(2) = 3, version(5)=0, curr_next_indi(1) = 1
|
|
//0x00 = section_number = 0
|
|
//0x00 = last_section_no = 0
|
|
//0x0001 = ProgNo = 1
|
|
//0xF000 = reserved(3) = 7, network pid = 4096
|
|
//0x2AB104B2 = CRC32
|
|
static char PAT[188] = {0x47, 0x40, 0x00, 0x10, 0x00, 0x00, 0xB0, 0x0D, 0x00, 0x01, 0xC1, 0x00, 0x00, 0x00, 0x01, 0xF0, 0x00, 0x2A, 0xB1, 0x04,
|
|
0xB2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
|
|
};
|
|
|
|
const char * createPMT(std::set<unsigned long>& selectedTracks, DTSC::Meta& myMeta, int contCounter=0);
|
|
|
|
} //TS namespace
|
|
|