H263plusVideoStreamParser Class Reference

#include <H263plusVideoStreamParser.hh>

Inheritance diagram for H263plusVideoStreamParser:

Collaboration diagram for H263plusVideoStreamParser:

Public Member Functions
	H263plusVideoStreamParser (class H263plusVideoStreamFramer *usingSource, FramedSource *inputSource)
virtual	~H263plusVideoStreamParser ()
void	registerReadInterest (unsigned char *to, unsigned maxSize)
unsigned	parse (u_int64_t &currentDuration)
unsigned	numTruncatedBytes () const
virtual void	flushInput ()

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

Protected Member Functions
void	setParseState ()
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

Protected Attributes
class H263plusVideoStreamFramer *	fUsingSource
unsigned char *	fTo
unsigned	fMaxSize
unsigned char *	fStartOfFrame
unsigned char *	fSavedTo
unsigned char *	fLimit
unsigned	fNumTruncatedBytes
unsigned	fSavedNumTruncatedBytes

Private Member Functions
int	parseH263Frame ()
bool	ParseShortHeader (u_int8_t *headerBuffer, H263INFO *outputInfoStruct)
void	GetMaxBitrate (MaxBitrate_CTX *ctx, u_int32_t frameSize, u_int8_t frameTRDiff)
u_int64_t	CalculateDuration (u_int8_t trDiff)
bool	GetWidthAndHeight (u_int8_t fmt, u_int16_t *width, u_int16_t *height)
u_int8_t	GetTRDifference (u_int8_t nextTR, u_int8_t currentTR)
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
H263INFO	fNextInfo
H263INFO	fCurrentInfo
MaxBitrate_CTX	fMaxBitrateCtx
char	fStates [3][256]
u_int8_t	fNextHeader [H263_REQUIRE_HEADER_SIZE_BYTES]
u_int32_t	fnextTR
u_int64_t	fcurrentPT
FramedSource *	fInputSource
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

Detailed Description

Definition at line 71 of file H263plusVideoStreamParser.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

H263plusVideoStreamParser()

H263plusVideoStreamParser::H263plusVideoStreamParser	(	class H263plusVideoStreamFramer *	usingSource,
		FramedSource *	inputSource )

~H263plusVideoStreamParser()

virtual H263plusVideoStreamParser::~H263plusVideoStreamParser ( )

virtual

Member Function Documentation

afterGettingBytes()

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

CalculateDuration()

u_int64_t H263plusVideoStreamParser::CalculateDuration ( u_int8_t trDiff )

private

curBank()

unsigned char * StreamParser::curBank ( )

inlineprivateinherited

Definition at line 116 of file StreamParser.hh.

{ return fCurBank; }

References fCurBank.

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

curOffset()

unsigned StreamParser::curOffset ( ) const

inlineprotectedinherited

Definition at line 107 of file StreamParser.hh.

{ return fCurParserIndex; }

References 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 ensureValidBytes1(), fCurParserIndex, and fTotNumValidBytes.

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

ensureValidBytes1()

void StreamParser::ensureValidBytes1 ( unsigned numBytesNeeded )

privateinherited

Referenced by ensureValidBytes().

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 curBank(), ensureValidBytes(), fCurParserIndex, and 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 ensureValidBytes(), fCurParserIndex, fRemainingUnparsedBits, and 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 fCurParserIndex, fRemainingUnparsedBits, and 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 fCurParserIndex, fRemainingUnparsedBits, and testBytes().

GetMaxBitrate()

void H263plusVideoStreamParser::GetMaxBitrate ( MaxBitrate_CTX * ctx, u_int32_t frameSize, u_int8_t frameTRDiff )

private

GetTRDifference()

u_int8_t H263plusVideoStreamParser::GetTRDifference ( u_int8_t nextTR, u_int8_t currentTR )

private

GetWidthAndHeight()

bool H263plusVideoStreamParser::GetWidthAndHeight ( u_int8_t fmt, u_int16_t * width, u_int16_t * height )

private

haveSeenEOF()

Boolean StreamParser::haveSeenEOF ( ) const

inlineprotectedinherited

Definition at line 111 of file StreamParser.hh.

{ return fHaveSeenEOF; }

References fHaveSeenEOF.

lastParsed()

unsigned char * StreamParser::lastParsed ( )

inlineprivateinherited

Definition at line 118 of file StreamParser.hh.

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

References curBank(), and fCurParserIndex.

nextToParse()

unsigned char * StreamParser::nextToParse ( )

inlineprivateinherited

Definition at line 117 of file StreamParser.hh.

{ return &curBank()[fCurParserIndex]; }

References curBank(), and fCurParserIndex.

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

numTruncatedBytes()

unsigned H263plusVideoStreamParser::numTruncatedBytes ( ) const

inline

Definition at line 82 of file H263plusVideoStreamParser.hh.

{ return fNumTruncatedBytes; }  // The number of truncated bytes (if any)

References fNumTruncatedBytes.

onInputClosure()

void StreamParser::onInputClosure ( void * clientData )

staticprivateinherited

onInputClosure1()

void StreamParser::onInputClosure1 ( )

privateinherited

parse()

unsigned H263plusVideoStreamParser::parse

(

u_int64_t &

currentDuration

)

parseH263Frame()

int H263plusVideoStreamParser::parseH263Frame ( )

private

ParseShortHeader()

bool H263plusVideoStreamParser::ParseShortHeader ( u_int8_t * headerBuffer, H263INFO * outputInfoStruct )

private

registerReadInterest()

void H263plusVideoStreamParser::registerReadInterest	(	unsigned char *	to,
		unsigned	maxSize )

restoreSavedParserState()

virtual void H263plusVideoStreamParser::restoreSavedParserState ( )

privatevirtual

Reimplemented from StreamParser.

saveParserState()

void StreamParser::saveParserState ( )

protectedinherited

Referenced by MPEGVideoStreamParser::setParseState().

setParseState()

void H263plusVideoStreamParser::setParseState ( )

protected

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 ensureValidBytes(), and 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 ensureValidBytes(), and 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 ensureValidBytes(), and 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 ensureValidBytes(), and nextToParse().

Referenced by 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 ensureValidBytes(), and nextToParse().

Referenced by getBytes().

totNumValidBytes()

unsigned & StreamParser::totNumValidBytes ( )

inlineprotectedinherited

Definition at line 109 of file StreamParser.hh.

{ return fTotNumValidBytes; }

References fTotNumValidBytes.

Field Documentation

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 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 curOffset(), ensureValidBytes(), get1Byte(), get2Bytes(), get4Bytes(), getBytes(), lastParsed(), nextToParse(), and skipBytes().

fCurrentInfo

H263INFO H263plusVideoStreamParser::fCurrentInfo

private

Definition at line 117 of file H263plusVideoStreamParser.hh.

fcurrentPT

u_int64_t H263plusVideoStreamParser::fcurrentPT

private

Definition at line 123 of file H263plusVideoStreamParser.hh.

fHaveSeenEOF

Boolean StreamParser::fHaveSeenEOF

privateinherited

Definition at line 162 of file StreamParser.hh.

Referenced by haveSeenEOF().

fInputSource

FramedSource* StreamParser::fInputSource

privateinherited

Definition at line 139 of file StreamParser.hh.

fLastSeenPresentationTime

struct timeval StreamParser::fLastSeenPresentationTime

privateinherited

Definition at line 164 of file StreamParser.hh.

fLimit

unsigned char* H263plusVideoStreamParser::fLimit

protected

Definition at line 111 of file H263plusVideoStreamParser.hh.

fMaxBitrateCtx

MaxBitrate_CTX H263plusVideoStreamParser::fMaxBitrateCtx

private

Definition at line 118 of file H263plusVideoStreamParser.hh.

fMaxSize

unsigned H263plusVideoStreamParser::fMaxSize

protected

Definition at line 108 of file H263plusVideoStreamParser.hh.

fNextHeader

u_int8_t H263plusVideoStreamParser::fNextHeader[H263_REQUIRE_HEADER_SIZE_BYTES]

private

Definition at line 120 of file H263plusVideoStreamParser.hh.

fNextInfo

H263INFO H263plusVideoStreamParser::fNextInfo

private

Definition at line 116 of file H263plusVideoStreamParser.hh.

fnextTR

u_int32_t H263plusVideoStreamParser::fnextTR

private

Definition at line 122 of file H263plusVideoStreamParser.hh.

fNumTruncatedBytes

unsigned H263plusVideoStreamParser::fNumTruncatedBytes

protected

Definition at line 112 of file H263plusVideoStreamParser.hh.

Referenced by numTruncatedBytes().

fRemainingUnparsedBits

unsigned char StreamParser::fRemainingUnparsedBits

privateinherited

Definition at line 156 of file StreamParser.hh.

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

fSavedNumTruncatedBytes

unsigned H263plusVideoStreamParser::fSavedNumTruncatedBytes

protected

Definition at line 113 of file H263plusVideoStreamParser.hh.

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.

fSavedTo

unsigned char* H263plusVideoStreamParser::fSavedTo

protected

Definition at line 110 of file H263plusVideoStreamParser.hh.

fStartOfFrame

unsigned char* H263plusVideoStreamParser::fStartOfFrame

protected

Definition at line 109 of file H263plusVideoStreamParser.hh.

fStates

char H263plusVideoStreamParser::fStates[3][256]

private

Definition at line 119 of file H263plusVideoStreamParser.hh.

fTo

unsigned char* H263plusVideoStreamParser::fTo

protected

Definition at line 107 of file H263plusVideoStreamParser.hh.

fTotNumValidBytes

unsigned StreamParser::fTotNumValidBytes

privateinherited

Definition at line 159 of file StreamParser.hh.

Referenced by ensureValidBytes(), and totNumValidBytes().

fUsingSource

class H263plusVideoStreamFramer* H263plusVideoStreamParser::fUsingSource

protected

Definition at line 105 of file H263plusVideoStreamParser.hh.

---

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

• liveMedia/H263plusVideoStreamParser.hh