GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  AFGETDATAOFFSET (3)

.ds Aq ’

NAME

afGetFrameCount, afGetTrackBytes, afGetDataOffset - get the total sample frame count, length of audio track in bytes, offset of the audio track for a track in an audio file

CONTENTS

SYNOPSIS

#include <audiofile.h>

AFframecount afGetFrameCount (AFfilehandle file, int track);

AFfileoffset afGetTrackBytes (AFfilehandle file, int track);

AFfileoffset afGetDataOffset (AFfilehandle file, int track);

PARAMETERS

file is an audio file handle created by a previous call to afOpenFile(3).

track is an integer which specifies an audio track within file. All supported file formats contain exactly one audio track per file, so the constant AF_DEFAULT_TRACK should always be used.

DESCRIPTION

afGetFrameCount returns the total number of sample frames contained within the specified track of the specified file.

Each sample frame of audio consists of a fixed number of samples (equal to the number of audio channels in the track. For monaural data, a sample frame consists of one audio sample. For stereophonic data, a sample frame consists of a stereo pair.

afGetTrackBytes returns the total number of bytes of raw audio data (i.e., prior to decompression or conversion) in the track.

afGetDataOffset returns the offset in bytes of the start of the audio data contained within the specified track of the specified file.

RETURN VALUE

afGetFrameCount returns the total number of sample frames in track.

afGetTrackBytes returns the total number of bytes of audio data in track.

afGetDataOffset returns the offset in bytes to the beginning of the audio data in track.

Each of these routines returns -1 in case of error.

AUTHOR

Michael Pruett <michael@68k.org>

Search for    or go to Top of page |  Section 3 |  Main Index


Audio File Library 0&.3&.6 AFGETFRAMECOUNT (3) 03/06/2013

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.