Short:    shared audio compression lib 
Author:   lorylombus@gmail.com (Lorence Lombardo)
Uploader: lorylombus@gmail.com (Lorence Lombardo)
Type:     util/pack
Version:  2.0
Architecture: m68k-amigaos

rc  Thursday 04-Aug-22 14:15:57

Standard disclaimer:-  

If you decide to use this library you do so at your own risk.


"amiaudcomp.library"  (c) 2022  Lorence Lombardo.

The amiaudcomp library is a new shared bare bones implementation of
typically classic Amiga audio compression and decompression. Bare bones
gives the coder the flexability of using the functions with established
formats, raw and their very own formats. The docu-examples have been
divided into 3 main components fib_com, fib_dpk and ext_tst. Fibonacci
has been chosen as the mascot. "aifinf" is a bonus mini AIF info
program example.

Once you have placed the "amiaudcomp.library" in your libs: assign
and you are in the "amiaudcomplib" directory a test procedure can be
executed by typing the following:-

execute aud_tst/mk_tst

I have tested this library on "OS1.x" to "OS3.9" and it is
working very well.

If your CPU is not fast enough then it is recommended you try the
test procedure with the "slow" switch.

By default the output test result path is to "ram:" but you can make
it the current directory with the path="" argument. Alternatively you
may specify another path which must end with : or /.

Currently example usage is provided for E, Blitz, C, ACE, HB2 and PB4.

But if your favourite language is not there then feel free to make
up a development kit.


NB:  This implementation of FDC/EDC is raw friendly because the
     encoded files have no requirement of reading a reference byte
     since they always start with zero like ADPCM2/3.

     If using "eaudio.device" I found it necessary to switch it off
     before using PLAY:.

     I did some testing on the AmigaForever 2013 68k AROS and found
     it necessary to BYO the "execute" command.

     With "r" you may use the "mk_tst" script with a GUI by ensuring
     the file protection S bit is enabled and typing the following:-
     r aud_tst/mk_tst


OS1.x notes:-

If it is your first time using the "mk_tst" script the "install"
switch can be used. Alternatively if installation is not convenient
then the "RES" switch can be used.

Some CSH users might appreciate the CSH switch.

If you wish to test below "WB1.3" the "PRE" switch will activate 
prehistoric mode. There is not much that I have that works
below "WB1.2".


URL's of releated interest:-

http://aminet.net/package/mus/edit/ADPCM_enc
http://aminet.net/package/mus/misc/ADPCM_dec
http://aminet.net/package/mus/misc/8svx_comp
http://aminet.net/package/mus/misc/wavepak
http://geocities.ws/lorylomb/ph_bin.txt
http://geocities.ws/lorylomb/ph_bin.lha
https://en.wikipedia.org/wiki/Fibonacci_number
http://geocities.ws/lorylomb/