MPEG2TransportStreamParser Class Reference

#include <MPEG2TransportStreamParser.hh>

Inheritance diagram for MPEG2TransportStreamParser:

Collaboration diagram for MPEG2TransportStreamParser:

Public Member Functions
	MPEG2TransportStreamParser (FramedSource *inputSource, FramedSource::onCloseFunc *onEndFunc, void *onEndClientData)
virtual	~MPEG2TransportStreamParser ()
UsageEnvironment &	envir ()
void	continueParsing ()
virtual void	flushInput ()

Static Public Member Functions
static void	continueParsing (void *clientData, unsigned char *ptr, unsigned size, struct timeval presentationTime)

Protected Types
typedef void()	clientContinueFunc(void *clientData, unsigned char *ptr, unsigned size, struct timeval presentationTime)

Protected Member Functions
void	saveParserState ()
u_int32_t	get4Bytes ()
u_int32_t	test4Bytes ()
u_int16_t	get2Bytes ()
u_int16_t	test2Bytes ()
u_int8_t	get1Byte ()
u_int8_t	test1Byte ()
void	getBytes (u_int8_t *to, unsigned numBytes)
void	testBytes (u_int8_t *to, unsigned numBytes)
void	skipBytes (unsigned numBytes)
void	skipBits (unsigned numBits)
unsigned	getBits (unsigned numBits)
unsigned	curOffset () const
unsigned &	totNumValidBytes ()
Boolean	haveSeenEOF () const
unsigned	bankSize () const

Private Member Functions
Boolean	parse ()
u_int8_t	parseAdaptationField ()
Boolean	processDataBytes (u_int16_t PID, Boolean pusi, unsigned numDataBytes)
void	parsePAT (Boolean pusi, unsigned numDataBytes)
void	parsePMT (PIDState_PMT *pidState, Boolean pusi, unsigned numDataBytes)
void	parseStreamDescriptors (unsigned numDescriptorBytes)
Boolean	processStreamPacket (PIDState_STREAM *pidState, Boolean pusi, unsigned numDataBytes)
unsigned	parsePESHeader (PIDState_STREAM *pidState, unsigned numDataBytes)
virtual void	restoreSavedParserState ()
unsigned char *	curBank ()
unsigned char *	nextToParse ()
unsigned char *	lastParsed ()
void	ensureValidBytes (unsigned numBytesNeeded)
void	ensureValidBytes1 (unsigned numBytesNeeded)
void	afterGettingBytes1 (unsigned numBytesRead, struct timeval presentationTime)
void	onInputClosure1 ()

Static Private Member Functions
static void	afterGettingBytes (void *clientData, unsigned numBytesRead, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
static void	onInputClosure (void *clientData)

Private Attributes
FramedSource *	fInputSource
Boolean	fAmCurrentlyParsing
FramedSource::onCloseFunc *	fOnEndFunc
void *	fOnEndClientData
PIDState **	fPIDState
double	fLastSeenPCR
FramedSource::onCloseFunc *	fClientOnInputCloseFunc
void *	fClientOnInputCloseClientData
clientContinueFunc *	fClientContinueFunc
void *	fClientContinueClientData
unsigned char *	fBank [2]
unsigned char	fCurBankNum
unsigned char *	fCurBank
unsigned	fSavedParserIndex
unsigned char	fSavedRemainingUnparsedBits
unsigned	fCurParserIndex
unsigned char	fRemainingUnparsedBits
unsigned	fTotNumValidBytes
Boolean	fHaveSeenEOF
struct timeval	fLastSeenPresentationTime

Friends
class	MPEG2TransportStreamDemuxedTrack

Detailed Description

Definition at line 93 of file MPEG2TransportStreamParser.hh.

Member Typedef Documentation

clientContinueFunc

typedef void() StreamParser::clientContinueFunc(void *clientData, unsigned char *ptr, unsigned size, struct timeval presentationTime)

protectedinherited

Definition at line 33 of file StreamParser.hh.

Constructor & Destructor Documentation

MPEG2TransportStreamParser()

MPEG2TransportStreamParser::MPEG2TransportStreamParser	(	FramedSource *	inputSource,
		FramedSource::onCloseFunc *	onEndFunc,
		void *	onEndClientData
	)

~MPEG2TransportStreamParser()

virtual MPEG2TransportStreamParser::~MPEG2TransportStreamParser ( )

virtual

Member Function Documentation

afterGettingBytes()

static void StreamParser::afterGettingBytes ( void *  clientData, unsigned  numBytesRead, unsigned  numTruncatedBytes, struct timeval  presentationTime, unsigned  durationInMicroseconds  )

staticprivateinherited

afterGettingBytes1()

void StreamParser::afterGettingBytes1 ( unsigned  numBytesRead, struct timeval  presentationTime  )

privateinherited

bankSize()

unsigned StreamParser::bankSize ( ) const

protectedinherited

continueParsing() [1/2]

void MPEG2TransportStreamParser::continueParsing

(

)

continueParsing() [2/2]

static void MPEG2TransportStreamParser::continueParsing ( void *  clientData, unsigned char *  ptr, unsigned  size, struct timeval  presentationTime  )

static

curBank()

unsigned char * StreamParser::curBank ( )

inlineprivateinherited

Definition at line 116 of file StreamParser.hh.

{ return fCurBank; }

References StreamParser::fCurBank.

Referenced by StreamParser::get1Byte(), StreamParser::lastParsed(), and StreamParser::nextToParse().

curOffset()

unsigned StreamParser::curOffset ( ) const

inlineprotectedinherited

Definition at line 107 of file StreamParser.hh.

{ return fCurParserIndex; }

References StreamParser::fCurParserIndex.

ensureValidBytes()

void StreamParser::ensureValidBytes ( unsigned  numBytesNeeded )

inlineprivateinherited

Definition at line 121 of file StreamParser.hh.

                                                 {
    // common case: inlined:
    if (fCurParserIndex + numBytesNeeded <= fTotNumValidBytes) return;
 
    ensureValidBytes1(numBytesNeeded);
  }

References StreamParser::ensureValidBytes1(), StreamParser::fCurParserIndex, and StreamParser::fTotNumValidBytes.

Referenced by StreamParser::get1Byte(), StreamParser::get2Bytes(), StreamParser::skipBytes(), StreamParser::test1Byte(), StreamParser::test2Bytes(), StreamParser::test4Bytes(), and StreamParser::testBytes().

ensureValidBytes1()

void StreamParser::ensureValidBytes1 ( unsigned  numBytesNeeded )

privateinherited

Referenced by StreamParser::ensureValidBytes().

envir()

UsageEnvironment & MPEG2TransportStreamParser::envir

(

)

flushInput()

virtual void StreamParser::flushInput ( )

virtualinherited

get1Byte()

u_int8_t StreamParser::get1Byte ( )

inlineprotectedinherited

Definition at line 79 of file StreamParser.hh.

                      { // byte-aligned
    ensureValidBytes(1);
    fRemainingUnparsedBits = 0;
    return curBank()[fCurParserIndex++];
  }

References StreamParser::curBank(), StreamParser::ensureValidBytes(), StreamParser::fCurParserIndex, and StreamParser::fRemainingUnparsedBits.

Referenced by MPEGVideoStreamParser::saveToNextCode(), and MPEGVideoStreamParser::skipToNextCode().

get2Bytes()

u_int16_t StreamParser::get2Bytes ( )

inlineprotectedinherited

Definition at line 60 of file StreamParser.hh.

                        {
    ensureValidBytes(2);
 
    unsigned char const* ptr = nextToParse();
    u_int16_t result = (ptr[0]<<8)|ptr[1];
 
    fCurParserIndex += 2;
    fRemainingUnparsedBits = 0;
 
    return result;
  }

References StreamParser::ensureValidBytes(), StreamParser::fCurParserIndex, StreamParser::fRemainingUnparsedBits, and StreamParser::nextToParse().

get4Bytes()

u_int32_t StreamParser::get4Bytes ( )

inlineprotectedinherited

Definition at line 46 of file StreamParser.hh.

                        { // byte-aligned; returned in big-endian order
    u_int32_t result = test4Bytes();
    fCurParserIndex += 4;
    fRemainingUnparsedBits = 0;
 
    return result;
  }

References StreamParser::fCurParserIndex, StreamParser::fRemainingUnparsedBits, and StreamParser::test4Bytes().

Referenced by MPEGVideoStreamParser::saveToNextCode(), and MPEGVideoStreamParser::skipToNextCode().

getBits()

unsigned StreamParser::getBits ( unsigned  numBits )

protectedinherited

getBytes()

void StreamParser::getBytes ( u_int8_t *  to, unsigned  numBytes  )

inlineprotectedinherited

Definition at line 89 of file StreamParser.hh.

                                                 {
    testBytes(to, numBytes);
    fCurParserIndex += numBytes;
    fRemainingUnparsedBits = 0;
  }

References StreamParser::fCurParserIndex, StreamParser::fRemainingUnparsedBits, and StreamParser::testBytes().

haveSeenEOF()

Boolean StreamParser::haveSeenEOF ( ) const

inlineprotectedinherited

Definition at line 111 of file StreamParser.hh.

{ return fHaveSeenEOF; }

References StreamParser::fHaveSeenEOF.

lastParsed()

unsigned char * StreamParser::lastParsed ( )

inlineprivateinherited

Definition at line 118 of file StreamParser.hh.

{ return &curBank()[fCurParserIndex-1]; }

References StreamParser::curBank(), and StreamParser::fCurParserIndex.

nextToParse()

unsigned char * StreamParser::nextToParse ( )

inlineprivateinherited

Definition at line 117 of file StreamParser.hh.

{ return &curBank()[fCurParserIndex]; }

References StreamParser::curBank(), and StreamParser::fCurParserIndex.

Referenced by StreamParser::get2Bytes(), StreamParser::test1Byte(), StreamParser::test2Bytes(), StreamParser::test4Bytes(), and StreamParser::testBytes().

onInputClosure()

static void StreamParser::onInputClosure ( void *  clientData )

staticprivateinherited

onInputClosure1()

void StreamParser::onInputClosure1 ( )

privateinherited

parse()

Boolean MPEG2TransportStreamParser::parse ( )

private

parseAdaptationField()

u_int8_t MPEG2TransportStreamParser::parseAdaptationField ( )

private

parsePAT()

void MPEG2TransportStreamParser::parsePAT ( Boolean  pusi, unsigned  numDataBytes  )

private

parsePESHeader()

unsigned MPEG2TransportStreamParser::parsePESHeader ( PIDState_STREAM *  pidState, unsigned  numDataBytes  )

private

parsePMT()

void MPEG2TransportStreamParser::parsePMT ( PIDState_PMT *  pidState, Boolean  pusi, unsigned  numDataBytes  )

private

parseStreamDescriptors()

void MPEG2TransportStreamParser::parseStreamDescriptors ( unsigned  numDescriptorBytes )

private

processDataBytes()

Boolean MPEG2TransportStreamParser::processDataBytes ( u_int16_t  PID, Boolean  pusi, unsigned  numDataBytes  )

private

processStreamPacket()

Boolean MPEG2TransportStreamParser::processStreamPacket ( PIDState_STREAM *  pidState, Boolean  pusi, unsigned  numDataBytes  )

private

restoreSavedParserState()

virtual void MPEG2TransportStreamParser::restoreSavedParserState ( )

privatevirtual

Reimplemented from StreamParser.

saveParserState()

void StreamParser::saveParserState ( )

protectedinherited

Referenced by MPEGVideoStreamParser::setParseState().

skipBits()

void StreamParser::skipBits ( unsigned  numBits )

protectedinherited

skipBytes()

void StreamParser::skipBytes ( unsigned  numBytes )

inlineprotectedinherited

Definition at line 98 of file StreamParser.hh.

                                    {
    ensureValidBytes(numBytes);
    fCurParserIndex += numBytes;
  }

References StreamParser::ensureValidBytes(), and StreamParser::fCurParserIndex.

test1Byte()

u_int8_t StreamParser::test1Byte ( )

inlineprotectedinherited

Definition at line 84 of file StreamParser.hh.

                       { // as above, but doesn't advance ptr
    ensureValidBytes(1);
    return nextToParse()[0];
  }

References StreamParser::ensureValidBytes(), and StreamParser::nextToParse().

test2Bytes()

u_int16_t StreamParser::test2Bytes ( )

inlineprotectedinherited

Definition at line 71 of file StreamParser.hh.

                         {
    ensureValidBytes(2);
 
    unsigned char const* ptr = nextToParse();
    return (ptr[0]<<8)|ptr[1];
  }

References StreamParser::ensureValidBytes(), and StreamParser::nextToParse().

test4Bytes()

u_int32_t StreamParser::test4Bytes ( )

inlineprotectedinherited

Definition at line 53 of file StreamParser.hh.

                         { // as above, but doesn't advance ptr
    ensureValidBytes(4);
 
    unsigned char const* ptr = nextToParse();
    return (ptr[0]<<24)|(ptr[1]<<16)|(ptr[2]<<8)|ptr[3];
  }

References StreamParser::ensureValidBytes(), and StreamParser::nextToParse().

Referenced by StreamParser::get4Bytes().

testBytes()

void StreamParser::testBytes ( u_int8_t *  to, unsigned  numBytes  )

inlineprotectedinherited

Definition at line 94 of file StreamParser.hh.

                                                  { // as above, but doesn't advance ptr
    ensureValidBytes(numBytes);
    memmove(to, nextToParse(), numBytes);
  }

References StreamParser::ensureValidBytes(), and StreamParser::nextToParse().

Referenced by StreamParser::getBytes().

totNumValidBytes()

unsigned & StreamParser::totNumValidBytes ( )

inlineprotectedinherited

Definition at line 109 of file StreamParser.hh.

{ return fTotNumValidBytes; }

References StreamParser::fTotNumValidBytes.

Friends And Related Function Documentation

MPEG2TransportStreamDemuxedTrack

friend class MPEG2TransportStreamDemuxedTrack

friend

Definition at line 107 of file MPEG2TransportStreamParser.hh.

Field Documentation

fAmCurrentlyParsing

Boolean MPEG2TransportStreamParser::fAmCurrentlyParsing

private

Definition at line 125 of file MPEG2TransportStreamParser.hh.

fBank

unsigned char* StreamParser::fBank[2]

privateinherited

Definition at line 146 of file StreamParser.hh.

fClientContinueClientData

void* StreamParser::fClientContinueClientData

privateinherited

Definition at line 143 of file StreamParser.hh.

fClientContinueFunc

clientContinueFunc* StreamParser::fClientContinueFunc

privateinherited

Definition at line 142 of file StreamParser.hh.

fClientOnInputCloseClientData

void* StreamParser::fClientOnInputCloseClientData

privateinherited

Definition at line 141 of file StreamParser.hh.

fClientOnInputCloseFunc

FramedSource::onCloseFunc* StreamParser::fClientOnInputCloseFunc

privateinherited

Definition at line 140 of file StreamParser.hh.

fCurBank

unsigned char* StreamParser::fCurBank

privateinherited

Definition at line 148 of file StreamParser.hh.

Referenced by StreamParser::curBank().

fCurBankNum

unsigned char StreamParser::fCurBankNum

privateinherited

Definition at line 147 of file StreamParser.hh.

fCurParserIndex

unsigned StreamParser::fCurParserIndex

privateinherited

Definition at line 155 of file StreamParser.hh.

Referenced by StreamParser::curOffset(), StreamParser::ensureValidBytes(), StreamParser::get1Byte(), StreamParser::get2Bytes(), StreamParser::get4Bytes(), StreamParser::getBytes(), StreamParser::lastParsed(), StreamParser::nextToParse(), and StreamParser::skipBytes().

fHaveSeenEOF

Boolean StreamParser::fHaveSeenEOF

privateinherited

Definition at line 162 of file StreamParser.hh.

Referenced by StreamParser::haveSeenEOF().

fInputSource

FramedSource* MPEG2TransportStreamParser::fInputSource

private

Definition at line 124 of file MPEG2TransportStreamParser.hh.

fLastSeenPCR

double MPEG2TransportStreamParser::fLastSeenPCR

private

Definition at line 129 of file MPEG2TransportStreamParser.hh.

fLastSeenPresentationTime

struct timeval StreamParser::fLastSeenPresentationTime

privateinherited

Definition at line 164 of file StreamParser.hh.

fOnEndClientData

void* MPEG2TransportStreamParser::fOnEndClientData

private

Definition at line 127 of file MPEG2TransportStreamParser.hh.

fOnEndFunc

FramedSource::onCloseFunc* MPEG2TransportStreamParser::fOnEndFunc

private

Definition at line 126 of file MPEG2TransportStreamParser.hh.

fPIDState

PIDState** MPEG2TransportStreamParser::fPIDState

private

Definition at line 128 of file MPEG2TransportStreamParser.hh.

fRemainingUnparsedBits

unsigned char StreamParser::fRemainingUnparsedBits

privateinherited

Definition at line 156 of file StreamParser.hh.

Referenced by StreamParser::get1Byte(), StreamParser::get2Bytes(), StreamParser::get4Bytes(), and StreamParser::getBytes().

fSavedParserIndex

unsigned StreamParser::fSavedParserIndex

privateinherited

Definition at line 151 of file StreamParser.hh.

fSavedRemainingUnparsedBits

unsigned char StreamParser::fSavedRemainingUnparsedBits

privateinherited

Definition at line 152 of file StreamParser.hh.

fTotNumValidBytes

unsigned StreamParser::fTotNumValidBytes

privateinherited

Definition at line 159 of file StreamParser.hh.

Referenced by StreamParser::ensureValidBytes(), and StreamParser::totNumValidBytes().

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The documentation for this class was generated from the following file:

• liveMedia/MPEG2TransportStreamParser.hh