afGetRate(3dm)							afGetRate(3dm)

NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     #include <dmedia/audiofile.h>

     double afGetRate(AFfilehandle file, int track)

     double afGetVirtualRate(AFfilehandle file,	int track)

PARAMETER    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     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 doubleprecision
 floating-point value.

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

CAVEATS    [Toc]    [Back]

     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    [Toc]    [Back]

     afOpenFile(3dm), afInitRate(3dm), afSetVirtualRate(3dm)
afGetRate(3dm)							afGetRate(3dm)

NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     #include <dmedia/audiofile.h>

     double afGetRate(AFfilehandle file, int track)

     double afGetVirtualRate(AFfilehandle file,	int track)

PARAMETER    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     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 doubleprecision
 floating-point value.

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

CAVEATS    [Toc]    [Back]

     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    [Toc]    [Back]

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


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