Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   31559 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

afGetRate(3dm)							afGetRate(3dm)

NAME
     afGetRate, afGetVirtualRate - get the track/virtual sample rate for a
     specified audio track from an AFfilehandle structure

SYNOPSIS
     #include <dmedia/audiofile.h>

     double afGetRate(AFfilehandle file, int track)

     double afGetVirtualRate(AFfilehandle file, int track)

PARAMETER
     file    is an AFfilehandle structure, previously created by a call to
	     afOpenFile(3dm).

     track   is an integer which identifies the audio track in the file.

	     Since all currently supported file formats contain exactly 1
	     audio track per file, the value AF_DEFAULT_TRACK should always be
	     used for this argument for now.

RETURN VALUE
     afGetRate() returns a positive double-precision floating point value
     which specifies the audio sample rate in Hz of the data in track.
     afGetVirtualRate() returns a positive double-precision floating point
     value which specifies the virtual audio sampling rate in Hz of the data
     in track as set by a previous call to afSetVirtualRate(3dm).  -1.0 is
     returned in case of error.

DESCRIPTION
     afGetRate() and afGetVirtualRate() return, in Hz., the file and virtual
     sampling rates, respectively, of the data associated with the specified
     track in an audio file.  The sampling rate is returned as a double-
     precision floating-point value.

     For example, a CD-quality audio track would return a sample rate value of
     44100.0.

CAVEATS
     afGetRate() may return any conceivable sampling rate. Programs should
     check that the sampling rate of a file opened for reading is a value it
     can deal with, or use the virtual rate setting to make it so.

SEE ALSO
     afOpenFile(3dm), afInitRate(3dm), afSetVirtualRate(3dm)

									Page 1

Vote for polarhome