time.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <math.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <fcntl.h>
#include <dirent.h>
#include "common.h"

Include dependency graph for time.c:

Go to the source code of this file.

Defines

#define DTMAX1   5.e-3

#define DTMAX2   5.e-6

#define ONE   1

Functions

void ResetTimes (void)

reset all the time variables

int InWindow (void)

test if we are within a segment: tricky

int DtFileSelect (const struct dirent *t)

filter for *station.dft *station.flt and *station.dt

int ReadDtLine (char *line, double *T, double *dt, char *fn)

read a dt/dft/flt line

int TimeFileSort (const void *a, const void *b)

comparison of time file names.

void FillDtCache (char *fileName)

read a dt file and fill the internal cache with the data

int GetInterpolatedShift (double t, double *ts, int *age, char *station, char *file)

scan a dt file and compute the interpolated shift

double GetExtraTcorr (struct InfoHeaderType *ih)

double GetFrameSkip (double starttime, char *station)

double ADCDelay (struct DigitizerType *digitizer, int ch)

return the static delay time for the given ADC (digitizer)

double Titan1FilterDelayTime (int ch)

compute the filter delay time for titan1

double FixBuggyMykerinos (struct DigitizerType *d, double f)

return the Mykerinos bug fix

void SetBuggyMykerinos (int yes)

set the buggy mykerinos flag

double FilterDelayTime (struct DigitizerType *digitizer, struct Titan2SRType *sr, int ch)

return the delay time for a given frequency

unsigned int FilterChain (struct DigitizerType *digitizer, struct Titan2SRType *sr, int ch)

return the delay time for a given frequency

int CorrectTime (double t, struct InfoHeaderType *header)

Fetch the time correction for the given time.

double GetApproximatedShift (void)

get the current time shift (interpolated)

double CorrectChannelStartTime (int ch)

compute the corrected time starting from the uncorrected time this function is not Titan1-compatible

int PrimaryChannel (int channel)

double DiffTimeT2T1 (struct Titan2TimeType *t1, struct Titan2TimeType *t2, struct Titan2TimeType *td)

Compute a time difference t2-t1, return the result as a double If td is null, the paramer is simply ignored.

double TimeAdd (struct Titan2TimeType *t1, struct Titan2TimeType *t2, struct Titan2TimeType *ts)

Compute a time sum t1+t2, return the result as a double If ts is null, the paramer is simply ignored.

void MakeDtFileName (struct Titan2TimeType *tt, char *infn, int len, char *sta)

create a new dt file name The file name is created based on the pattern YYYY.MM.DD-hh.mm.ss.station.dt

void CloseTimeFile (char *sta)

close any open time file

FILE * OpenTimeFile (struct Titan2TimeType *it)

open a new dt file If the the file is closed, open a new one

void TimeFrameCallBack (struct Titan2TimeType *it, struct Titan2TimeType *et)

After each complete time frame, this function is called to update the cache file and the dt file.

void RoundTime (struct Titan2TimeType *t, struct Titan2TimeType *r)

round the time to the closest minute

unsigned char ProcessTimeFrame (const unsigned char *frame)

Identify and process the frame Both GPS and TIME frames are processed here.

int InitInfoHeader (int ch)

initialize the channel information header Here the information data are read from HWConfig since it the function opens a new data segment.

double UpdateInfoHeader (int ch)

update the channel information header This function fetches the information data in oldHWConfig since it is called to close a data segment.

char * FileName (const char *inpre, const char *post, int ch, int option)

generate a file name based on the header information, prefix and postfix

Variables

int fileNameOptions = ADD_CHANNEL_CODE

char * auxChannelName []

char * auxChannelUnit []

int buggyMykerinos = 0

int warnFixBuggyMykerinos = 0

char dayDirPrefix [255]

int timeWarningNow = 0

struct InfoHeaderType infoHeader [MAX_CHANNEL]

struct Titan2TimeType lastExtTime = { 0, 0 }

struct Titan2TimeType lastIntTime = { 0, 0 }

struct Titan2TimeType roundedTime = { 0, 0 }

int knownUSecond = 0

int knownSecond = 0

int knownExtGps = 0

int knownTime = 0

FILE * dtFile = NULL

char dtFileName [255]

struct Titan2TimeType dtFileTime = { 0, 0 }

int dtUseLine

double lastDt = 1.e16

used to detect time jumps in the dt files

int nCached = 0

double * dtCached = NULL

number of data in the cache

double * TCached = NULL

char dtCachedFile [255]

char testForStation [128]

int emptyDir = 0

time_t lastShiftComputation = 0

the lastShift* are approximated shifts derived from the drift file (interpolation) or from the last pulse.

double lastShiftComputed = 0.0

Define Documentation

#define DTMAX1 5.e-3

Definition at line 39 of file time.c.

Referenced by CloseTimeFile().

#define DTMAX2 5.e-6

Definition at line 40 of file time.c.

Referenced by CloseTimeFile().

#define ONE 1

Referenced by FilterDelayTime().

Function Documentation

double ADCDelay	(	struct DigitizerType *	digitizer,
		int	ch
	)

return the static delay time for the given ADC (digitizer)

Parameters:

	digitizer	the digitizer
	ch	the channel number used for titan1 only

Returns:: the delay time

Definition at line 648 of file time.c.

References DigitizerType::adcDelay, DigitizerType::adcFrequency, Titan2SRType::base, Titan2SRType::div, infoHeader, MAX_OSIRIS_CHANNEL, DigitizerType::ok, PrimaryChannel(), and InfoHeaderType::sr.

Referenced by AddMSeedData(), and CorrectChannelStartTime().

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void CloseTimeFile ( char * sta )

close any open time file

Parameters:

sta

the station name

Definition at line 1140 of file time.c.

References dtFile, dtFileName, DTMAX1, DTMAX2, dtUseLine, HWConfig, MakeDtFileName(), PulseFilter(), pulseFilter, HWConfigType::rebootTime, Rename(), HWConfigType::resetTime, and Titan2TimeType::usecond.

Referenced by FlushNonDataFiles(), and TimeFrameCallBack().

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double CorrectChannelStartTime ( int ch )

compute the corrected time starting from the uncorrected time this function is not Titan1-compatible

Parameters:

ch

the channel

Returns:: the corrected time

Definition at line 1012 of file time.c.

References ADCDelay(), InfoHeaderType::correctedTime, InfoHeaderType::correctionMethod, CorrectTime(), HWConfigType::digitizer, FilterDelayTime(), infoHeader, MAX_OSIRIS_CHANNEL, noTimeCorrection, oldHWConfig, InfoHeaderType::sr, InfoHeaderType::tadc, InfoHeaderType::tfilter, InfoHeaderType::tshift, InfoHeaderType::uncorrected, US2S, and Titan2TimeType::usecond.

Referenced by UpdateInfoHeader().

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int CorrectTime	(	double	t,
		struct InfoHeaderType *	header
	)

Fetch the time correction for the given time.

Parameters:

	t	the time of the correction
	header	the header to update

Returns:: the correction method used (may be -1)

Definition at line 893 of file time.c.

References AUTO_CORRECTION, InfoHeaderType::correctionMethod, DiffTimeT2T1(), InfoHeaderType::driftFile, InfoHeaderType::external, extractingData, GetInterpolatedShift(), INTERPOLATION_CORRECTION, LAST_PULSE_CORRECTION, NO_TIME_CORRECTION, InfoHeaderType::otshift, PrintWarning, InfoHeaderType::pulse, InfoHeaderType::pulseAge, pulseTime, InfoHeaderType::station, timeWarning, timeWarningNow, InfoHeaderType::tshift, and Titan2TimeType::usecond.

Referenced by CorrectChannelStartTime(), and GetApproximatedShift().

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double DiffTimeT2T1	(	struct Titan2TimeType *	t1,
		struct Titan2TimeType *	t2,
		struct Titan2TimeType *	td
	)

Compute a time difference t2-t1, return the result as a double If td is null, the paramer is simply ignored.

No check is performed on t1 and t2.

Parameters:

	t1	first time
	t2	second time
	td	difference t2-t1

Returns:: the difference as a double

Definition at line 1069 of file time.c.

References US2S, and Titan2TimeType::usecond.

Referenced by CheckContinuity(), CorrectTime(), and TimeFrameCallBack().

int DtFileSelect ( const struct dirent * t )

filter for *station.dft *station.flt and *station.dt

Definition at line 166 of file time.c.

References testForStation.

Referenced by GetInterpolatedShift().

char* FileName	(	const char *	inpre,
		const char *	post,
		int	ch,
		int	option
	)

generate a file name based on the header information, prefix and postfix

Parameters:

	pre	the prefix (path/)
	post	postfix (.SAC, .ASC ...)
	ch	channel number to build the filename for
	option	various undocumented options...

Returns:: the filename (statically allocated)

Definition at line 1873 of file time.c.

References ADD_CHANNEL_CODE, ADD_LOCATION_CODE, ADD_NETWORK_CODE, auxChannelName, InfoHeaderType::beginWindow, beginWindow, InfoHeaderType::channel, channelNameNumber, InfoHeaderType::correctedTime, dayDirPrefix, EDU_FILE_NAME, forceName, forceNameOptions, HWConfigType::formatVersion, infoHeader, MAX_CHANNEL, MAX_OSIRIS_CHANNEL, oldHWConfig, overWrite, preEvent, prependdaydir, PrintWarning, station, and time2name().

Referenced by CloseAscFile(), CloseBinFile(), CloseMSeedInt32File(), CloseMSeedSteim1File(), CloseSacFile(), CloseSeg2File(), CloseSegyFile(), CloseSisFile(), CloseTitFile(), CloseWavFile(), OpenFullSeg2(), and UpdateInfoHeader().

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void FillDtCache ( char * fileName )

read a dt file and fill the internal cache with the data

Parameters:

fileName

the filename

Definition at line 268 of file time.c.

References dtCached, dtCachedFile, nCached, PrintError, PrintLog, ReadDtLine(), and TCached.

Referenced by GetInterpolatedShift().

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unsigned int FilterChain	(	struct DigitizerType *	digitizer,
		struct Titan2SRType *	sr,
		int	ch
	)

return the delay time for a given frequency

Parameters:

	digitizer	the digitizer
	sr	the sampling rate
	ch	channel

Returns:: an integger built as C8|C5|C2 C8, C5 and C2 8bits number of decimations 8,5,2

Definition at line 831 of file time.c.

References DigitizerType::adcDecimation, DigitizerType::adcDecimationLength, DigitizerType::adcFrequency, and Titan2SRType::npts.

Referenced by UpdateInfoHeader().

double FilterDelayTime	(	struct DigitizerType *	digitizer,
		struct Titan2SRType *	sr,
		int	ch
	)

return the delay time for a given frequency

Parameters:

	digitizer	the digitizer
	sr	the sampling rate
	ch	channel

Returns:: the delay time (s)

Definition at line 759 of file time.c.

References DigitizerType::adcDecimation, DigitizerType::adcDecimationLength, DigitizerType::adcFrequency, FixBuggyMykerinos(), MAX_OSIRIS_CHANNEL, Titan2SRType::npts, ONE, PrintError, DigitizerType::secondDecimationLength, timeWarning, timeWarningNow, and Titan1FilterDelayTime().

Referenced by AddMSeedData(), and CorrectChannelStartTime().

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double FixBuggyMykerinos	(	struct DigitizerType *	d,
		double	f
	)

return the Mykerinos bug fix

Parameters:

	d	the digitizer
	f	the head sampling rate

Returns:: the delay correction

Definition at line 717 of file time.c.

References DigitizerType::adcDecimationLength, buggyMykerinos, HWConfigType::formatMajor, HWConfigType::formatMinor, HWConfigType::formatVersion, HWConfig, PrintWarning, and warnFixBuggyMykerinos.

Referenced by FilterDelayTime().

double GetApproximatedShift ( void )

get the current time shift (interpolated)

Returns:: the time shift

Definition at line 974 of file time.c.

References AUTO_CORRECTION, InfoHeaderType::correctionMethod, CorrectTime(), currentTime, InfoHeaderType::external, HWConfigType::fieldIdent, HWConfig, LAST_PULSE_CORRECTION, lastShiftComputation, lastShiftComputed, InfoHeaderType::pulse, pulseTime, saveShift, InfoHeaderType::station, InfoHeaderType::tshift, and Titan2TimeType::usecond.

Referenced by ProcessTimeFrame().

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double GetExtraTcorr ( struct InfoHeaderType * ih )

Definition at line 533 of file time.c.

References InfoHeaderType::driftFile, InfoHeaderType::extraTcorrUsed, InfoHeaderType::station, TDB_PATH_TC, and TDBPath().

Referenced by UpdateInfoHeader().

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double GetFrameSkip	(	double	starttime,
		char *	station
	)

Definition at line 589 of file time.c.

References PrintWarning, str2time(), TDB_PATH_TC, and TDBPath().

Referenced by UpdateInfoHeader().

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int GetInterpolatedShift	(	double	t,
		double *	ts,
		int *	age,
		char *	station,
		char *	file
	)

scan a dt file and compute the interpolated shift

Parameters:

	t	the time of the shift
	ts	the shift
	age	the age of the previous pulse
	station	the station name
	file	the file used to compute the delay

Definition at line 324 of file time.c.

References __scandir(), dtCached, dtCachedFile, DtFileSelect(), emptyDir, EXTENDED_CORRECTION, FillDtCache(), INTERPOLATION_CORRECTION, nCached, NO_TIME_CORRECTION, PrintDebug, PrintError, ReadDtLine(), TCached, TDB_PATH_DFT, TDBPath(), testForStation, and TimeFileSort().

Referenced by CloseMSeedInt32File(), CloseMSeedSteim1File(), and CorrectTime().

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int InitInfoHeader ( int ch )

initialize the channel information header Here the information data are read from HWConfig since it the function opens a new data segment.

Parameters:

ch

the channel to initialize

Definition at line 1507 of file time.c.

References AUTO_CORRECTION, Titan2SRType::base, beginWindow, InfoHeaderType::beginWindow, InfoHeaderType::ch, InfoHeaderType::correctionMethod, currentTime, Titan2SRType::div, extractTit, HWConfig, infoHeader, Titan2SRType::npts, PrimaryChannel(), PrintDebug, PrintError, PrintLog, InfoHeaderType::pulse, InfoHeaderType::pulseAge, pulseTime, InfoHeaderType::sr, HWConfigType::srExp, HWConfigType::srObs, InfoHeaderType::uncorrected, and Titan2TimeType::usecond.

Referenced by OpenAscChannel(), OpenBinChannel(), OpenMSeedChannel(), OpenSacChannel(), OpenSeg2Channel(), OpenSegyChannel(), OpenSisBinFile(), OpenTitBinFile(), and OpenWavChannel().

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int InWindow ( void )

test if we are within a segment: tricky

Definition at line 131 of file time.c.

References beginWindow, correctedTime, currentTag, currentTime, endWindow, extractTit, onlyTag, skipTime, and Titan2TimeType::usecond.

Referenced by EndSuperFrame().

void MakeDtFileName	(	struct Titan2TimeType *	tt,
		char *	infn,
		int	len,
		char *	sta
	)

create a new dt file name The file name is created based on the pattern YYYY.MM.DD-hh.mm.ss.station.dt

Parameters:

	fn	the output buffer
	tt	titan time to start from
	len	the length of the buffer
	sta	the station name

Definition at line 1103 of file time.c.

References overWrite, TDB_PATH_DT, TDBPath(), and Titan2TimeType::usecond.

Referenced by CloseTimeFile().

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FILE* OpenTimeFile ( struct Titan2TimeType * it )

open a new dt file If the the file is closed, open a new one

Parameters:

it

the reference time

Returns:: the FILE pointer

Definition at line 1181 of file time.c.

References dtFile, dtFileName, dtUseLine, FILE_BUFFER_SIZE, OpenTempFile(), PrintDebug, and PrintError.

Referenced by TimeFrameCallBack().

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int PrimaryChannel ( int channel )

Definition at line 1050 of file time.c.

Referenced by ADCDelay(), AddMSeedDataInt32(), AddMSeedDataSteim1(), and InitInfoHeader().

unsigned char ProcessTimeFrame ( const unsigned char * frame )

Identify and process the frame Both GPS and TIME frames are processed here.

The titan2 format sends GPST_FRAME, then TIME_FRAME with b20=1 and finally TIME_FRAME with b20=0.

Parameters:

frame

the frame to be analysed and processed

Returns:: 0 if the frame was interprered or the frame number if the frame was not identified

Definition at line 1353 of file time.c.

References Titan2SRType::base, beginWindow, CacheCallBack(), CachePrintCST(), ChangeStreamConfig(), CheckDiffConfig(), correctedTime, currentTime, EndSuperFrame(), endWindow, FlushDataFiles(), FlushNonDataFiles(), HWConfigType::formatVersion, frame2i24, frame2i24_64, frame2i32_64, GetApproximatedShift(), globalStationChange, gpsExtTime, gpsIntTime, GPST_FRAME, HWConfig, knownExtGps, knownSecond, knownTime, knownUSecond, MAX_CHANNEL, PrintDebug, PrintError, pulseTime, ResetTimes(), RoundTime(), SeekTime(), skipTime, HWConfigType::srExp, HWConfigType::srObs, TIME_FRAME, TimeFrameCallBack(), and Titan2TimeType::usecond.

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int ReadDtLine	(	char *	line,
		double *	T,
		double *	dt,
		char *	fn
	)

read a dt/dft/flt line

Parameters:

	line	the line to analyse
	T	the time read
	dt	the time shift read
	fn	the file name (for error printing)

Returns:: 0 if ok -1 on error

Definition at line 209 of file time.c.

References PrintError, and str2time().

Referenced by FillDtCache(), and GetInterpolatedShift().

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void ResetTimes ( void )

reset all the time variables

Definition at line 103 of file time.c.

References correctedTime, currentTime, HWConfigType::digitizer, dtCached, emptyDir, gpsExtTime, gpsIntTime, HWConfig, knownExtGps, knownSecond, knownTime, knownUSecond, lastShiftComputation, lastShiftComputed, nCached, pulseTime, and TCached.

Referenced by EndSuperFrame(), ProcessTimeFrame(), and ResetInput().

void RoundTime	(	struct Titan2TimeType *	t,
		struct Titan2TimeType *	r
	)

round the time to the closest minute

Parameters:

	t	input time
	r	rounded time

Definition at line 1335 of file time.c.

References Titan2TimeType::usecond.

Referenced by ProcessTimeFrame().

void SetBuggyMykerinos ( int yes )

set the buggy mykerinos flag

Parameters:

yes

set (1) or unset (0)

Definition at line 749 of file time.c.

References buggyMykerinos.

Referenced by CheckVersion().

double TimeAdd	(	struct Titan2TimeType *	t1,
		struct Titan2TimeType *	t2,
		struct Titan2TimeType *	ts
	)

Compute a time sum t1+t2, return the result as a double If ts is null, the paramer is simply ignored.

No check is performed on t1 and t2.

Parameters:

	t1	first time
	t2	second time
	ts	sum t1+t2

Returns:: the sum as a double

Definition at line 1091 of file time.c.

References US2S, and Titan2TimeType::usecond.

int TimeFileSort	(	const void *	a,
		const void *	b
	)

comparison of time file names.

first dft<flt<dt, use __alphasort if the extension is the same

Parameters:

	a	entry 1
	b	entry 2

Returns:: -1 if a<b, 1 if not

Definition at line 228 of file time.c.

References __alphasort().

Referenced by GetInterpolatedShift().

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void TimeFrameCallBack	(	struct Titan2TimeType *	it,
		struct Titan2TimeType *	et
	)

After each complete time frame, this function is called to update the cache file and the dt file.

Parameters:

	it	internal time
	et	external time

Definition at line 1215 of file time.c.

References CloseTimeFile(), cutDtOnReset, DiffTimeT2T1(), HWConfigType::drift, HWConfigType::driftTime, dtFile, dtUseLine, HWConfigType::fieldIdent, HWConfig, lastDt, oldHWConfig, OpenTimeFile(), PrintDebug, HWConfigType::rebootTime, HWConfigType::resetTime, saveShift, StrTime(), StrTimeNS(), and Titan2TimeType::usecond.

Referenced by ProcessTimeFrame().

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double Titan1FilterDelayTime ( int ch )

compute the filter delay time for titan1

Parameters:

ch

the channel

Returns:: the filter delay time

Definition at line 680 of file time.c.

References Titan2SRType::base, Titan2SRType::div, MAX_OSIRIS_CHANNEL, oldHWConfig, and HWConfigType::srExp.

Referenced by FilterDelayTime().

double UpdateInfoHeader ( int ch )

update the channel information header This function fetches the information data in oldHWConfig since it is called to close a data segment.

Parameters:

ch

the channel to correct

Returns:: the fully corrected start time

Definition at line 1584 of file time.c.

References auxChannelName, auxChannelUnit, InfoHeaderType::beginWindow, beginWindow, InfoHeaderType::channel, HWConfigType::channelName, CorrectChannelStartTime(), correctedTime, InfoHeaderType::correctedTime, HWConfigType::digitizer, Titan2SRType::div, HWConfigType::drift, HWConfigType::driftTime, EmergencyExit(), extractTit, InfoHeaderType::extraTcorr, HWConfigType::fieldIdent, FileName(), fileNameOptions, FilterChain(), HWConfigType::formatMajor, HWConfigType::formatMinor, HWConfigType::formatVersion, HWConfigType::gain, GetExtraTcorr(), GetFrameSkip(), HWConfig, HWConfigType::impedance, infoHeader, InfoHeaderType::location, HWConfigType::locationName, HWConfigType::LSB, MAJOR, MAX_OSIRIS_CHANNEL, MINOR, InfoHeaderType::network, HWConfigType::networkName, noInfo, noTimeCorrection, oldHWConfig, PrintError, PROGRAMNAME, InfoHeaderType::pulse, HWConfigType::rebootTime, HWConfigType::resetTime, HWConfigType::selectedGain, HWConfigType::serialNumber, HWConfigType::softwareRealease, InfoHeaderType::sr, InfoHeaderType::station, station, StrTime(), StrTimeNS(), TDBUpdateHeader(), time2str(), timeWarningNow, InfoHeaderType::uncorrected, US2S, Titan2TimeType::usecond, and VERSION.

Referenced by CloseAscFile(), CloseBinFile(), CloseMSeedInt32File(), CloseMSeedSteim1File(), CloseSacFile(), CloseSeg2File(), CloseSisFile(), CloseTitFile(), CloseWavFile(), and UpdateSegyHeader().

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Variable Documentation

char* auxChannelName[]

Initial value:

 { "PwrSupply", "IntTemp", "AUX02", "AUX03", "AUX04", "AUX05", "AUX06", "AUX07", "AUX08",
                             "AUX09", "AUX10", "AUX11", "AUX12", "AUX13", "AUX14", "AUX15" }

Definition at line 44 of file time.c.

Referenced by CloseAscFile(), FileName(), and UpdateInfoHeader().

char* auxChannelUnit[]

Initial value:

 { "0.1V", "0.1°C", "count", "count", "count", "count", "count", "count",
                             "count", "count", "count", "count", "count", "count", "count", "count" }

Definition at line 46 of file time.c.

Referenced by CloseAscFile(), and UpdateInfoHeader().

int buggyMykerinos = 0

Definition at line 49 of file time.c.

Referenced by FixBuggyMykerinos(), and SetBuggyMykerinos().

char dayDirPrefix[255]

Definition at line 52 of file time.c.

Referenced by FileName().

double* dtCached = NULL

number of data in the cache

Definition at line 74 of file time.c.

Referenced by FillDtCache(), GetInterpolatedShift(), and ResetTimes().

char dtCachedFile[255]

Definition at line 76 of file time.c.

Referenced by FillDtCache(), and GetInterpolatedShift().

FILE* dtFile = NULL

Definition at line 66 of file time.c.

Referenced by CloseTimeFile(), OpenTimeFile(), and TimeFrameCallBack().

char dtFileName[255]

Definition at line 67 of file time.c.

Referenced by CloseTimeFile(), and OpenTimeFile().

struct Titan2TimeType dtFileTime = { 0, 0 }

Definition at line 68 of file time.c.

int dtUseLine

Definition at line 69 of file time.c.

Referenced by CloseTimeFile(), OpenTimeFile(), and TimeFrameCallBack().

int emptyDir = 0

Definition at line 80 of file time.c.

Referenced by GetInterpolatedShift(), and ResetTimes().

int fileNameOptions = ADD_CHANNEL_CODE

Definition at line 42 of file time.c.

Referenced by CloseAscFile(), CloseBinFile(), CloseMSeedInt32File(), CloseMSeedSteim1File(), CloseSacFile(), CloseSeg2File(), CloseSegyFile(), CloseSisFile(), CloseTitFile(), CloseWavFile(), OpenFullSeg2(), OpenMSeedChannel(), ParseOptions(), TDBInit(), and UpdateInfoHeader().

int knownExtGps = 0

Definition at line 63 of file time.c.

Referenced by ProcessTimeFrame(), and ResetTimes().

int knownSecond = 0

Definition at line 62 of file time.c.

Referenced by ProcessTimeFrame(), and ResetTimes().

int knownTime = 0

Definition at line 64 of file time.c.

Referenced by ProcessTimeFrame(), and ResetTimes().

int knownUSecond = 0

Definition at line 61 of file time.c.

Referenced by ProcessTimeFrame(), and ResetTimes().

double lastDt = 1.e16

used to detect time jumps in the dt files

Definition at line 71 of file time.c.

Referenced by TimeFrameCallBack().

struct Titan2TimeType lastExtTime = { 0, 0 }

Definition at line 57 of file time.c.

struct Titan2TimeType lastIntTime = { 0, 0 }

Definition at line 58 of file time.c.

time_t lastShiftComputation = 0

the lastShift* are approximated shifts derived from the drift file (interpolation) or from the last pulse.

They are "approximated" because we do not recompute (and re-interpolate) the value each time it is needed since only the integer part of the time is needed (not the microsecond.

Definition at line 87 of file time.c.

Referenced by GetApproximatedShift(), and ResetTimes().

double lastShiftComputed = 0.0

Definition at line 88 of file time.c.

Referenced by GetApproximatedShift(), and ResetTimes().

int nCached = 0

Definition at line 73 of file time.c.

Referenced by FillDtCache(), GetInterpolatedShift(), and ResetTimes().

struct Titan2TimeType roundedTime = { 0, 0 }

Definition at line 59 of file time.c.

double* TCached = NULL

Definition at line 75 of file time.c.

Referenced by FillDtCache(), GetInterpolatedShift(), and ResetTimes().

char testForStation[128]

Definition at line 78 of file time.c.

Referenced by DtFileSelect(), and GetInterpolatedShift().

int timeWarningNow = 0

Definition at line 53 of file time.c.

Referenced by CorrectTime(), FilterDelayTime(), and UpdateInfoHeader().

int warnFixBuggyMykerinos = 0

Definition at line 50 of file time.c.

Referenced by FixBuggyMykerinos().


Defines
#define	DTMAX1 5.e-3
#define	DTMAX2 5.e-6
#define	ONE 1
Functions
void	ResetTimes (void)
	reset all the time variables
int	InWindow (void)
	test if we are within a segment: tricky
int	DtFileSelect (const struct dirent *t)
	filter for station.dft station.flt and *station.dt
int	ReadDtLine (char line, double T, double dt, char fn)
	read a dt/dft/flt line
int	TimeFileSort (const void a, const void b)
	comparison of time file names.
void	FillDtCache (char *fileName)
	read a dt file and fill the internal cache with the data
int	GetInterpolatedShift (double t, double ts, int age, char station, char file)
	scan a dt file and compute the interpolated shift
double	GetExtraTcorr (struct InfoHeaderType *ih)
double	GetFrameSkip (double starttime, char *station)
double	ADCDelay (struct DigitizerType *digitizer, int ch)
	return the static delay time for the given ADC (digitizer)
double	Titan1FilterDelayTime (int ch)
	compute the filter delay time for titan1
double	FixBuggyMykerinos (struct DigitizerType *d, double f)
	return the Mykerinos bug fix
void	SetBuggyMykerinos (int yes)
	set the buggy mykerinos flag
double	FilterDelayTime (struct DigitizerType digitizer, struct Titan2SRType sr, int ch)
	return the delay time for a given frequency
unsigned int	FilterChain (struct DigitizerType digitizer, struct Titan2SRType sr, int ch)
	return the delay time for a given frequency
int	CorrectTime (double t, struct InfoHeaderType *header)
	Fetch the time correction for the given time.
double	GetApproximatedShift (void)
	get the current time shift (interpolated)
double	CorrectChannelStartTime (int ch)
	compute the corrected time starting from the uncorrected time this function is not Titan1-compatible
int	PrimaryChannel (int channel)
double	DiffTimeT2T1 (struct Titan2TimeType t1, struct Titan2TimeType t2, struct Titan2TimeType *td)
	Compute a time difference t2-t1, return the result as a double If td is null, the paramer is simply ignored.
double	TimeAdd (struct Titan2TimeType t1, struct Titan2TimeType t2, struct Titan2TimeType *ts)
	Compute a time sum t1+t2, return the result as a double If ts is null, the paramer is simply ignored.
void	MakeDtFileName (struct Titan2TimeType tt, char infn, int len, char *sta)
	create a new dt file name The file name is created based on the pattern YYYY.MM.DD-hh.mm.ss.station.dt
void	CloseTimeFile (char *sta)
	close any open time file
FILE *	OpenTimeFile (struct Titan2TimeType *it)
	open a new dt file If the the file is closed, open a new one
void	TimeFrameCallBack (struct Titan2TimeType it, struct Titan2TimeType et)
	After each complete time frame, this function is called to update the cache file and the dt file.
void	RoundTime (struct Titan2TimeType t, struct Titan2TimeType r)
	round the time to the closest minute
unsigned char	ProcessTimeFrame (const unsigned char *frame)
	Identify and process the frame Both GPS and TIME frames are processed here.
int	InitInfoHeader (int ch)
	initialize the channel information header Here the information data are read from HWConfig since it the function opens a new data segment.
double	UpdateInfoHeader (int ch)
	update the channel information header This function fetches the information data in oldHWConfig since it is called to close a data segment.
char *	FileName (const char inpre, const char post, int ch, int option)
	generate a file name based on the header information, prefix and postfix
Variables
int	fileNameOptions = ADD_CHANNEL_CODE
char *	auxChannelName []
char *	auxChannelUnit []
int	buggyMykerinos = 0
int	warnFixBuggyMykerinos = 0
char	dayDirPrefix [255]
int	timeWarningNow = 0
struct InfoHeaderType	infoHeader [MAX_CHANNEL]
struct Titan2TimeType	lastExtTime = { 0, 0 }
struct Titan2TimeType	lastIntTime = { 0, 0 }
struct Titan2TimeType	roundedTime = { 0, 0 }
int	knownUSecond = 0
int	knownSecond = 0
int	knownExtGps = 0
int	knownTime = 0
FILE *	dtFile = NULL
char	dtFileName [255]
struct Titan2TimeType	dtFileTime = { 0, 0 }
int	dtUseLine
double	lastDt = 1.e16
	used to detect time jumps in the dt files
int	nCached = 0
double *	dtCached = NULL
	number of data in the cache
double *	TCached = NULL
char	dtCachedFile [255]
char	testForStation [128]
int	emptyDir = 0
time_t	lastShiftComputation = 0
	the lastShift* are approximated shifts derived from the drift file (interpolation) or from the last pulse.
double	lastShiftComputed = 0.0