Au_dt

SUPPORTED ENCODINGS/FORMATS:

 - 8-bit u-law/A-law
 - 8, 16, 24 & 32-bit linear (PCM)
 - IEEE Float (32 & 64-bit)
 - G.721 (4-bit, untested)
 - G.723 (3 & 5-bit, untested)

Fragmented files are not supported at the moment.

INSTALLATION:

1. copy the file SUN_AU to DEVS:DataTypes/.
2. copy sun_au.datatype to SYS:Classes/DataTypes/.

Alternatively, if you have the OS4 SDK installed, you can just type "make
install" and both files will be installed to their correct places.

BUGS:

None known. If you find any, contact me by e-mail (fredrik at a500 dot org).
The same goes for (if you have any) .au/.snd encodings/formats that are not yet
supported in this datatype.

COMPILING:

To compile just type "make". To compile without G.72X support use "make G72X=0".

In order to be able to recreate the descriptor (from AU.dt) file you will need
to have the MakeDT.rexx arexx script installed in REXX: (can be downloaded from
http://aminet.net). The rest will be handled by the Makefile.

CHANGES:

50.2
 - improved low memory handling. now tries to allocate a smaller decode/encode
buffer if there isn't enough free memory for the default size (~16kB). previous
versions just returned an error if this was the case
 - added back DTM_WRITE support which seems to have gone missing from the
previous version :-(. fortunately I had a backup of the v0.3 sources so I didn't
need to rewrite the code for this

50.1 (27-Feb-2006)
 - enabled G.72X support (untested)

0.3
 - GetAU() now obtains it's file handle properly with DTA_Handle tag instead of
IDOS->Open()
 - added support for writing in native format, like in wave.datatype
 - changed name (sun_au.datatype -> au.datatype)

0.2 (5-May-2005)
 - fixed memory trashing in au_class.c (was the cause of some instability)

0.1 (26-Apr-2005)
 - first released version of the datatype