.TH WFDB 3 "3 November 2017" "WFDB software 10.6.0" "WFDB Applications Guide"
.SH NAME
wfdb \- Waveform Database library
.SH SYNOPSIS
.B #include <wfdb/wfdb.h>
.PP
int adumuv(WFDB_Signal \fIs\fP, WFDB_Sample \fIadc_units\fP)
.br
double aduphys(WFDB_Signal \fIs\fP, WFDB_Sample \fIadc_units\fP)
.br
char *anndesc(int \fIannotation_code\fP)
.br
int annopen(char *\fIrecord\fP, WFDB_Anninfo *\fIaiarray\fP, unsigned int \fInann\fP)
.br
char *annstr(int \fIannotation_code\fP)
.br
int calopen(char *\fIcalibration_filename\fP)
.br
char *datstr(WFDB_Date \fId\fP)
.br
char *ecgstr(int \fIannotation_code\fP)
.br
int findsig(char *\fIsignal_name\fP)
.br
void flushcal(void)
.br
WFDB_Frequency getafreq(void)
.br
int getann(WFDB_Annotator \fIa\fP, WFDB_Annotation *\fIannotation\fP)
.br
double getbasecount(void)
.br
int getcal(char *\fIdescription\fP, char *\fIunits\fP, WFDB_Calinfo *\fIcal\fP)
.br
WFDB_Frequency getcfreq(void)
.br
int getgvmode(void)
.br
WFDB_Frequency getiafreq(WFDB_Annotator \fIa\fP)
.br
WFDB_Frequency getiaorigfreq(WFDB_Annotator \fIa\fP)
.br
WFDB_Frequency getifreq(void)
.br
int getseginfo(WFDB_Seginfo **segments)
.br
char *getwfdb(void)
.br
int getframe(WFDB_Sample *\fIvector\fP)
.br
char *getinfo(char *\fIrecord\fP)
.br
int getspf(void)
.br
int getvec(WFDB_Sample *\fIvector\fP)
.br
void iannclose(WFDB_Annotator a)
.br
int iannsettime(WFDB_Time \fIt\fP)
.br
int isgsettime(WFDB_Group \fIsignal_group\fP, WFDB_Time \fIt\fP)
.br
int isigopen(char *\fIrecord\fP, WFDB_Siginfo *\fIsiarray\fP, int \fInsig\fP)
.br
int isigsettime(WFDB_Time \fIt\fP)
.br
char *mstimstr(WFDB_Time \fIt\fP)
.br
WFDB_Sample muvadu(WFDB_Signal \fIs\fP, int \fImicrovolts\fP)
.br
int newcal(char *\fIcalibration_filename\fP)
.br
int newheader(char *\fIrecord\fP)
.br
void oannclose(WFDB_Annotator a)
.br
int osigfopen(WFDB_Siginfo *\fIsiarray\fP, unsigned int \fInsig\fP)
.br
int osigopen(char *\fIrecord\fP, WFDB_Siginfo *\fIsiarray\fP, unsigned int \fInsig\fP)
.br
WFDB_Sample physadu(WFDB_Signal \fIs\fP, double \fIv\fP)
.br
int putann(WFDB_Annotator \fIa\fP, WFDB_Annotation *\fIannotation\fP)
.br
int putcal(WFDB_Calinfo *\fIcal\fP)
.br
int putinfo(char *\fIinfo\fP)
.br
int putvec(WFDB_Sample *\fIvector\fP)
.br
WFDB_Frequency sampfreq(char *\fIrecord\fP)
.br
WFDB_Sample sample(WFDB_Signal \fIs\fP, WFDB_Time \fIt\fP)
.br
int sample_valid(void)
.br
void setafreq(WFDB_Frequency \fIannotation_clock_frequency\fP)
.br
int setanndesc(int \fIannotation_code\fP, char *\fIannotation_description\fP)
.br
int setannstr(int \fIannotation_code\fP, char *\fIannotation_mnemonic_string\fP)
.br
void setbasecount(double \fIbase_count\fP)
.br
int setbasetime(char *\fItime_string\fP)
.br
void setcfreq(WFDB_Frequency \fIcounter_frequency\fP)
.br
void setiafreq(WFDB_Annotator \fIa\fP, WFDB_Frequency \fIannotation_clock_frequency\fP)
.br
int setifreq(WFDB_Frequency \fIgetvec_frequency\fP)
.br
void setwfdb(char *\fIdatabase_path_string\fP)
.br
int setecgstr(int \fIannotation_code\fP, char *\fIannotation_mnemonic_string\fP)
.br
void setgvmode(int \fImode\fP)
.br
int setheader(char *\fIrecord\fP, WFDB_Siginfo *\fIsiarray\fP, unsigned int \fInsig\fP)
.br
int setibsize(int \fIsize\fP)
.br
int setmsheader(char *\fIrecord\fP, char **\fIseg_names\fP, unsigned int \fInsegments\fP)
.br
int setobsize(int \fIsize\fP)
.br
int setsampfreq(WFDB_Frequency \fIsampling_frequency\fP)
.br
int strann(char *\fIannotation_mnemonic_string\fP)
.br
WFDB_Date strdat(char *\fIdate_string\fP)
.br
int strecg(char *\fIannotation_mnemonic_string\fP)
.br
WFDB_Time strtim(char *\fItime_string\fP)
.br
char *timstr(WFDB_Time \fIt\fP)
.br
WFDB_Time tnextvec(WFDB_Signal \fIs\fP, WFDB_Time \fIt\fP)
.br
int ungetann(WFDB_Annotator \fIa\fP, WFDB_Annotation *\fIannotation\fP)
.br
const char *wfdbcflags(void)
.br
const char *wfdbdefwfdb(void)
.br
const char *wfdbdefwfdbcal(void)
.br
char *wfdberror(void)
.br
char *wfdbfile(char *\fItype\fP, char *\fIrecord\fP)
.br
void wfdbflush(void)
.br
int wfdbgetskew(WFDB_Signal \fIs\fP)
.br
long wfdbgetstart(WFDB_Signal \fIs\fP)
.br
int wfdbinit(char *\fIrecord\fP, WFDB_Anninfo *\fIaiarray\fP, unsigned int \fInann\fP,
WFDB_Siginfo *\fIsiarray\fP, unsigned int \fInsig\fP)
.br
const char *wfdbldflags(void)
.br
void wfdbmemerr(int exit_on_error)
.br
int wfdbputprolog(char *\fIprolog\fP, long \fIbytes\fP, WFDB_Signal \fIs\fP)
.br
void wfdbquiet(void)
.br
void wfdbquit(void)
.br
void wfdbsetskew(WFDB_Signal \fIs\fP, int \fIskew\fP)
.br
void wfdbsetstart(WFDB_Signal \fIs\fP, long \fIbyte_offset\fP)
.br
void wfdbverbose(void)
.br
const char *wfdbversion(void)
.SH DESCRIPTION
Waveform databases (including the MIT-BIH Arrhythmia Database, the AHA Database
for Evaluation of Ventricular Arrhythmia Detectors, and the European ST-T
Database) are accessible to applications written in C and C++ via the
functions defined in the WFDB library. Under UNIX, programs may be linked with
the WFDB library by using the \fB-lwfdb\fR option at the end of the C or C++
compiler command. The functions are described in detail in the reference below.
.SH FILES
.SS UNIX systems:
.TP 22
\fB/usr/lib/libwfdb.a\fR
standard (statically bound) library
.TP
\fB/usr/lib/libwfdb.so
.TP
\fB/usr/lib/libwfdb.so.\fIM.N\fR
shareable library (bound at run-time, not available on all systems). On some
systems, one of these pathnames is a link to the other, and both are needed; on
others, only one of the pathnames is needed.
.TP
\fB/usr/lib/libwfdb.sa\fR
stubs for linking with applications that use \fBlibwfdb.so\fR (not needed on all
systems).
.PP
The location of these files may vary on some systems.
.SS MS-DOS/MS Windows systems:
.TP
\fBwfdb.lib\fR
standard (small memory model) library
.TP
\fBwfdbl.lib\fR
large memory model library
.TP
\fBwfdb.dll\fR
dynamic link library for MS Windows
.TP
\fBwfdbdll.lib\fR
stubs for linking with applications that use \fBwfdb.dll\fR
.SH SEE ALSO
.TP
\fIWFDB Programmer's Guide\fR
On systems that support GNU emacs, the \fIGuide\fR may be available on-line
using emacs \fIinfo\fR; from within \fIemacs\fR, type control-H followed by
\fIi\fR to find out. An HTML version may be installed on your system (in
\fI/usr/help/html/wpg\fP); the most recent version can be viewed on-line at
\fBhttp://www.physionet.org/physiotools/wpg/\fP.
.PP
The WFDB library can also be used with Fortran programs; see \fIwfdbf\fR(3)
and the \fIGuide\fR for details.
.SH DIAGNOSTICS
All functions that return an \fBint\fR indicate errors with negative
values. Depending on context, zero returns may indicate success or
failure. Positive values indicate success. Most errors other than
EOF are accompanied by diagnostics on the standard error output.
.SH AUTHORS
George B. Moody (george@mit.edu), with contributions from many sources.
The predecessor of the WFDB library was originally implemented in C by
George Moody and Ted Baker, based on earlier designs by Paul Schluter and
Larry Siegal. Other contributors of code and ideas include Paul Albrecht,
Mike Dakin, Phil Devlin, Scott Greenwald, David Israel, Roger Mark, Joe Mietus,
and Warren Muldrow. Pat Hamilton and Bob Farrell contributed ports, to MacOS
and Win32 respectively.
.SH SOURCES
http://www.physionet.org/physiotools/wfdb/lib/