afSetLoopEndFrame man page on IRIX

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afSetLoopStartFrame(3dm)			      afSetLoopStartFrame(3dm)

NAME
     afSetLoopStartFrame, afSetLoopEndFrame, afSetLoopCount - set the
     start/end frame and loop count from an AFfilehandle structure for a
     specified loop.

SYNOPSIS
     #include <dmedia/audiofile.h>

     int afSetLoopStartFrame(AFfilehandle file, int instid,
				  int loopid, AFframecount startframe)

     int afSetLoopEndFrame(AFfilehandle file, int instid,
				  int loopid, AFframecount endframe)

     int afSetLoopCount(AFfilehandle file, int instid,
				  int loopid, int count)

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

     instid   is a positive integer value which identifies an instrument
	      configuration in file.  instid should be an element from an
	      array of IDs created via a call to afInitInstIDs(3dm).

     loopid   is a positive integer value which identifies a loop structure in
	      an instrument parameter chunk.  You create loopid's by calling
	      afInitLoopIDs(3dm).

RETURN VALUE
     All of these routines return 0 on success or -1 if there is an error.

DESCRIPTION
     Each takes a loopid argument which provides a handle to a set of loop
     parameters.

     You can create a list of loop ID's for an audio track by calling
     afInitLoopIDs(3dm).  Logically, an audio file contains chunks of
     instrument parameters (specified by instid handles), and each chunk of
     instrument parameters may contain several loops.

     AIFF(4) (and AIFF-C) files contain at most one instrument configuration,
     but other file formats may contain multiple configurations.  afQuery(3dm)
     should be used to determine in advance whether a particular format
     supports multiple inst chunks.

     These routines allow you to set information about loops in an audio file
     without the added overhead of using associated markers (see
     afSetLoopStart(3dm)).  This is necessary because several file formats now
     supported by the Audio File Library contain loop information (i.e., start
     and end points) which is completely independent of marker information.
     In other words, the markers (if any) stored in the file header may and

									Page 1

afSetLoopStartFrame(3dm)			      afSetLoopStartFrame(3dm)

     usually will refer to locations in the file other than the loop start and
     end points.

SEE ALSO
     afOpenFile(3dm), afInitInstIDs(3dm), afSetInstParamLong(3dm),
     afInitLoopIDs(3dm), afSetLoopStart(3dm), aiff(4), avr(4), wave(4), sd2(4)

									Page 2

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