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afreadframes(3) [centos man page]

AFREADFRAMES(3) 														   AFREADFRAMES(3)

NAME
afReadFrames - read sample frames from a track in an audio file SYNOPSIS
#include <audiofile.h> AFframecount afReadFrames(AFfilehandle file, int track, void *data, int count); DESCRIPTION
afReadFrames attempts to read up to count frames of audio data from the audio file handle file into the buffer at data. PARAMETERS
file is a valid file handle returned by afOpenFile(3). track is always AF_DEFAULT_TRACK for all currently supported file formats. data is a buffer of storing count frames of audio sample data. count is the number of sample frames to be read. RETURN VALUE
afReadFrames returns the number of frames successfully read from file. ERRORS
afReadFrames can produce these errors: AF_BAD_FILEHANDLE the file handle was invalid AF_BAD_TRACKID the track parameter is not AF_DEFAULT_TRACK AF_BAD_READ reading audio data from the file failed AF_BAD_LSEEK seeking within the file failed SEE ALSO
afWriteFrames(3) AUTHOR
Michael Pruett <michael@68k.org> Audio File Library 0.3.6 03/06/2013 AFREADFRAMES(3)

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AFSEEKFRAME(3)															    AFSEEKFRAME(3)

NAME
afSeekFrame, afTellFrame - update or access the current sample frame position for a track in an audio file SYNOPSIS
#include <audiofile.h> AFframecount afSeekFrame(AFfilehandle file, int track, AFframecount frameOffset); AFframecount afTellFrame(AFfilehandle file, int track); PARAMETERS
file is a valid audio file handle created by afOpenFile(3). track identifies an audio track within the file. track is always AF_DEFAULT_TRACK for all currently supported audio file formats. frameOffset is a sample frame offset. Valid sample frame offsets must be greater than or equal to zero and strictly less than the number of sample frames contained within the specified audio track. The special value -1 is also allowed. DESCRIPTION
afSeekFrame moves the logical file position for a specified audio track to a desired sample frame location. If frameOffset is -1, afSeekFrame will not modify the current file offset and will instead return the current file position. afTellFrame returns current file position in sample frames. RETURN VALUE
On success, afSeekFrame and afTellFrame will return the current file position as measured in sample frames from the start of the audio track. On failure, afSeekFrame and afTellFrame will return the value -1. ERRORS
The following errors can be generated by afSeekFrame or afTellFrame: AF_BAD_FILEHANDLE file does not represent a valid file handle. AF_BAD_TRACK track does not identify a valid track. AF_BAD_LSEEK A call to lseek failed. AUTHOR
Michael Pruett <michael@68k.org> Audio File Library 0.3.6 03/06/2013 AFSEEKFRAME(3)
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