vdr 2.7.5
cFrameDetector Class Reference

#include <remux.h>

Public Member Functions

 cFrameDetector (int Pid=0, int Type=0)
 ~cFrameDetector ()
void SetPid (int Pid, int Type)
void SetMissing (void)
int Analyze (const uchar *Data, int Length, bool ErrorCheck=true)
bool Synced (void)
bool NewFrame (int *PreviousErrors=NULL, int *MissingFrames=NULL)
bool IndependentFrame (void)
double FramesPerSecond (void)
uint16_t FrameWidth (void)
uint16_t FrameHeight (void)
eScanType ScanType (void)
eAspectRatio AspectRatio (void)

Public Attributes

cFrameCheckerframeChecker

Private Types

enum  { MaxPtsValues = 150 }

Private Attributes

int pid
int type
bool synced
bool newFrame
bool independentFrame
uint32_t ptsValues [MaxPtsValues]
int numPtsValues
int numIFrames
bool isVideo
double framesPerSecond
uint16_t frameWidth
uint16_t frameHeight
eScanType scanType
eAspectRatio aspectRatio
int framesInPayloadUnit
int framesPerPayloadUnit
bool scanning
bool firstIframeSeen
cFrameParserparser

Detailed Description

Definition at line 528 of file remux.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum
private
Enumerator
MaxPtsValues 

Definition at line 530 of file remux.h.

Constructor & Destructor Documentation

◆ cFrameDetector()

cFrameDetector::cFrameDetector ( int Pid = 0,
int Type = 0 )

Sets up a frame detector for the given Pid and stream Type.

If no Pid and Type is given, they need to be set by a separate call to SetPid().

Definition at line 2105 of file remux.c.

References arUnknown, aspectRatio, firstIframeSeen, frameChecker, frameHeight, framesInPayloadUnit, framesPerPayloadUnit, framesPerSecond, frameWidth, independentFrame, newFrame, numIFrames, numPtsValues, parser, scanning, scanType, SetPid(), stUnknown, and synced.

◆ ~cFrameDetector()

cFrameDetector::~cFrameDetector ( )

Definition at line 2124 of file remux.c.

References frameChecker.

Member Function Documentation

◆ Analyze()

int cFrameDetector::Analyze ( const uchar * Data,
int Length,
bool ErrorCheck = true )

Analyzes the TS packets pointed to by Data.

Length is the number of bytes Data points to, and must be a multiple of TS_SIZE. Returns the number of bytes that have been analyzed. If the return value is 0, the data was not sufficient for analyzing and Analyze() needs to be called again with more actual data. Error checks can be turned off by setting ErrorCheck to false. This is used when regenerating the index file, where the first chunk of data is scanned for the PAT/PMT and then a rewind is done on the file.

Definition at line 2171 of file remux.c.

References aspectRatio, CmpUint32(), dbgframes, DEFAULTFRAMESPERSECOND, dsyslog, firstIframeSeen, frameChecker, frameHeight, framesInPayloadUnit, framesPerPayloadUnit, framesPerSecond, frameWidth, independentFrame, isVideo, MaxPtsValues, MIN_TS_PACKETS_FOR_FRAME_DETECTOR, newFrame, numIFrames, numPtsValues, parser, PATPID, PesGetPts(), PesHasPts(), pid, PTSTICKS, ptsValues, scanning, scanType, synced, TS_SIZE, TS_SYNC, TsHasPayload(), TsIsScrambled(), TsPayloadOffset(), TsPayloadStart(), and TsPid().

Referenced by cIndexFileGenerator::Action().

◆ AspectRatio()

eAspectRatio cFrameDetector::AspectRatio ( void )
inline

Returns the aspect ratio, or arUnknown if this information is not available.

Definition at line 593 of file remux.h.

References aspectRatio.

Referenced by cIndexFileGenerator::Action().

◆ FrameHeight()

uint16_t cFrameDetector::FrameHeight ( void )
inline

Returns the frame height, or 0 if this information is not available.

Definition at line 589 of file remux.h.

References frameHeight.

Referenced by cIndexFileGenerator::Action().

◆ FramesPerSecond()

double cFrameDetector::FramesPerSecond ( void )
inline

Returns the number of frames per second, or 0 if this information is not available.

Definition at line 584 of file remux.h.

References framesPerSecond.

Referenced by cIndexFileGenerator::Action().

◆ FrameWidth()

uint16_t cFrameDetector::FrameWidth ( void )
inline

Returns the frame width, or 0 if this information is not available.

Definition at line 587 of file remux.h.

References frameWidth.

Referenced by cIndexFileGenerator::Action().

◆ IndependentFrame()

bool cFrameDetector::IndependentFrame ( void )
inline

Returns true if a new frame was detected and this is an independent frame (i.e.

one that can be displayed by itself, without using data from any other frames).

Definition at line 580 of file remux.h.

References independentFrame.

Referenced by cIndexFileGenerator::Action().

◆ NewFrame()

bool cFrameDetector::NewFrame ( int * PreviousErrors = NULL,
int * MissingFrames = NULL )

Returns true if the data given to the last call to Analyze() started a new frame.

If PreviousErrors is given, it will be set to the number of errors in the previous frame. If MissingFrames is given, it will be set to the number of missing frames between the previous frame and this one. The results returned in PreviousErrors and MissingFrames are only valid if the function returns true.

Definition at line 2160 of file remux.c.

References frameChecker, and newFrame.

Referenced by cIndexFileGenerator::Action().

◆ ScanType()

eScanType cFrameDetector::ScanType ( void )
inline

Returns the scan type, or stUnknown if this information is not available.

Definition at line 591 of file remux.h.

References scanType.

Referenced by cIndexFileGenerator::Action().

◆ SetMissing()

void cFrameDetector::SetMissing ( void )

Call if this is a resumed recording, which has missing frames.

Definition at line 2155 of file remux.c.

References frameChecker.

◆ SetPid()

void cFrameDetector::SetPid ( int Pid,
int Type )

Sets the Pid and stream Type to detect frames for.

Definition at line 2136 of file remux.c.

References esyslog, isVideo, parser, pid, and type.

Referenced by cIndexFileGenerator::Action(), and cFrameDetector().

◆ Synced()

bool cFrameDetector::Synced ( void )
inline

Returns true if the frame detector has synced on the data stream.

Definition at line 571 of file remux.h.

References synced.

Referenced by cIndexFileGenerator::Action().

Member Data Documentation

◆ aspectRatio

eAspectRatio cFrameDetector::aspectRatio
private

Definition at line 544 of file remux.h.

Referenced by Analyze(), AspectRatio(), and cFrameDetector().

◆ firstIframeSeen

bool cFrameDetector::firstIframeSeen
private

Definition at line 549 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ frameChecker

cFrameChecker* cFrameDetector::frameChecker

Definition at line 552 of file remux.h.

Referenced by Analyze(), cFrameDetector(), NewFrame(), SetMissing(), and ~cFrameDetector().

◆ frameHeight

uint16_t cFrameDetector::frameHeight
private

Definition at line 542 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and FrameHeight().

◆ framesInPayloadUnit

int cFrameDetector::framesInPayloadUnit
private

Definition at line 545 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ framesPerPayloadUnit

int cFrameDetector::framesPerPayloadUnit
private

Definition at line 546 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ framesPerSecond

double cFrameDetector::framesPerSecond
private

Definition at line 540 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and FramesPerSecond().

◆ frameWidth

uint16_t cFrameDetector::frameWidth
private

Definition at line 541 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and FrameWidth().

◆ independentFrame

bool cFrameDetector::independentFrame
private

Definition at line 535 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and IndependentFrame().

◆ isVideo

bool cFrameDetector::isVideo
private

Definition at line 539 of file remux.h.

Referenced by Analyze(), and SetPid().

◆ newFrame

bool cFrameDetector::newFrame
private

Definition at line 534 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and NewFrame().

◆ numIFrames

int cFrameDetector::numIFrames
private

Definition at line 538 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ numPtsValues

int cFrameDetector::numPtsValues
private

Definition at line 537 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ parser

cFrameParser* cFrameDetector::parser
private

Definition at line 550 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and SetPid().

◆ pid

int cFrameDetector::pid
private

Definition at line 531 of file remux.h.

Referenced by Analyze(), and SetPid().

◆ ptsValues

uint32_t cFrameDetector::ptsValues[MaxPtsValues]
private

Definition at line 536 of file remux.h.

Referenced by Analyze().

◆ scanning

bool cFrameDetector::scanning
private

Definition at line 548 of file remux.h.

Referenced by Analyze(), and cFrameDetector().

◆ scanType

eScanType cFrameDetector::scanType
private

Definition at line 543 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and ScanType().

◆ synced

bool cFrameDetector::synced
private

Definition at line 533 of file remux.h.

Referenced by Analyze(), cFrameDetector(), and Synced().

◆ type

int cFrameDetector::type
private

Definition at line 532 of file remux.h.

Referenced by SetPid().


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