table of contents
AFINITBYTEORDER(3) | AFINITBYTEORDER(3) |
NAME¶
afInitCompression - initialize compression for a track in an audio file setupSYNOPSIS¶
#include <audiofile.h>
void afInitCompression(AFfilesetup setup, int track, int compression);
PARAMETERS¶
setup is a valid file setup returned by afNewFileSetup(3). track specifies a track within the audio file setup. track is always AF_DEFAULT_TRACK for all currently supported file formats. compression is an identifier specifying the compression type (such as AF_COMPRESSION_G711_ULAW) to be used for audio data in the track.DESCRIPTION¶
Given an AFfilesetup structure created with afNewFileSetup(3) and a track identified by track (AF_DEFAULT_TRACK for all currently supported file formats), afInitCompression initializes the track to the specified compression. The following compression types are currently supported: AF_COMPRESSION_NONEno compression
AF_COMPRESSION_G711_ULAW
CCITT G.711 mu-law encoding
AF_COMPRESSION_G711_ALAW
CCITT G.711 A-law encoding
AF_COMPRESSION_IMA
IMA ADPCM encoding
AF_COMPRESSION_MS_ADPCM
MS ADPCM encoding
AF_COMPRESSION_FLAC
FLAC
AF_COMPRESSION_ALAC
Apple Lossless Audio Codec
ERRORS¶
afInitCompression can produce the following errors: AF_BAD_FILESETUP
setup represents an invalid file setup.
AF_BAD_TRACKID
track represents an invalid track identifier.
AF_BAD_COMPTYPE
compression represents an invalid compression type.
SEE ALSO¶
afNewFileSetup(3), afInitSampleFormat(3)AUTHOR¶
Michael Pruett <michael@68k.org>03/06/2013 | Audio File Library 0.3.6 |