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AFSETVIRTUALSAMPLEFO(3) AFSETVIRTUALSAMPLEFO(3) NAME afSetVirtualByteOrder, afSetVirtualChannels, afSetVirtualPCMMapping, af- SetVirtualSampleFormat - set the virtual data format for a track in an au- dio file SYNOPSIS #include <audiofile.h> int afSetVirtualByteOrder (AFfilehandle file, int track, int byteOrder); int afSetVirtualChannels (AFfilehandle file, int track, int channels); int afSetVirtualSampleFormat (AFfilehandle file, int track, int sampleFormat, int sampleWidth); int afSetVirtualPCMMapping (AFfilehandle file, int track, double slope, double intercept, double minclip, double maxclip); PARAMETERS * file is an AFfilehandle which refers to an open audio file and is usu- ally created by afOpenFile. * track is an integer which identifies a particular track in an open au- dio file. The only valid track is AF_DEFAULT_TRACK for all currently supported file formats. * sampleFormat is an integer which denotes a virtual sample format. Valid values are AF_SAMPFMT_TWOSCOMP, AF_SAMPFMT_UNSIGNED, AF_SAMPFMT_FLOAT, and AF_SAMPFMT_DOUBLE. * sampleWidth is a positive integer which specifies the number of bits in a sample. * channels is a positive integer which specifies the number of inter- leaved audio channels in the given audio track. * byteOrder is an integer which specifies the virtual byte order of sam- ples in the given audio track. byteOrder can be either AF_BYTE- ORDER_BIGENDIAN or AF_BYTEORDER_LITTLEENDIAN. * slope and intercept are double-precision floating point values which indicate the audio data sample slope and zero-crossing value, respec- tively, for the given sample format. * minclip and maxclip are double-precision floating point values which indicates the minimum or maximum sample values to be returned. Any val- ues less than minclip will be set to minclip, and any values greater than maxclip will be set to maxclip. RETURN VALUE These functions return 0 for success and -1 for failure. AUTHOR Michael Pruett <michael@68k.org> Audio File Library 0.3.6 03/06/2013 AFSETVIRTUALSAMPLEFO(3)
NAME | SYNOPSIS | PARAMETERS | RETURN VALUE | AUTHOR
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