OpenAL-aoal6oct23-with Gnat2021 on Ubuntu Installation

Updated 1/06/2024
Confirmed Ubuntu versions:
22.04.3 LTS

Full Description

This is a sound-playing utility for Ada that can play WAV files on Windows, OSX, and Linux, using
Ada tasking and OpenAL libraries. It includes a partial Ada binding to OpenAL.

It provides sound-playing capabilities for Ada apps to:

• asynchronously start and stop music/sound loops,
• initiate transient sounds,
• allow unlimited sound concurrency.

Description in READMEao.md:
Here is another OpenAL set with some test programs in GitHub. The test program plays two audio sounds.
It has a test programs “two”.

Install OpenAL ver 1.1.4 (06oct2023)

Install libopenal-dev package

$ sudo apt install libopenal-dev

Download Test Program from GitHub

Source Files: https://sourceforge.net/projects/portable-openal-sound/files/6oct2023/

Extract the file and copy “aoal6oct23” directory files as following diagram.

The test environment is extracted to home/ada

Check file permissions.

adaExample directory files:

Build “two” with Terminal

“two” plays 2 wave files simultaneously

Build with the original batch file

~/ada/aoal6oct23/adaOpenAL/adaExample$ ./lcmp.sh two

~/ada/aoal6oct23/adaOpenAL/adaExample$ ./lcmp.sh two
rm: cannot remove '*.o': No such file or directory
gcc -c -O3 -gnat12 -I.. -I../OalBinding -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/two.o two.adb
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/snd4ada.o /home/mm/ada/aoal6oct23/adaOpenAL/snd4ada.adb
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/al_h.o /home/mm/ada/aoal6oct23/adaOpenAL/OalBinding/al_h.ads
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/alc_h.o /home/mm/ada/aoal6oct23/adaOpenAL/OalBinding/alc_h.ads
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/oal_hpp.o /home/mm/ada/aoal6oct23/adaOpenAL/OalBinding/oal_hpp.ads
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/snd.o /home/mm/ada/aoal6oct23/adaOpenAL/snd.adb
gcc -c -I./ -O3 -gnat12 -I.. -I../OalBinding -I- -o /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/sndloop.o /home/mm/ada/aoal6oct23/adaOpenAL/sndloop.adb
gnatbind -aO/home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj -I.. -I../OalBinding -x /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/two.ali
gnatlink /home/mm/ada/aoal6oct23/adaOpenAL/adaExample/obj/two.ali -o two_gnu -O3 oal.o -lstdc++ -lopenal -lpthread
rm: cannot remove '*.ali': No such file or directory

~/ada/aoal6oct23/adaOpenAL/adaExample$ ls -al
-rw-r–r– 1 mm mm 3824888 Dec 9 2021 choirCC3.wav
drwxr-xr-x 2 mm mm 4096 Jan 2 2023 hide
-rwxr-xr-x 1 mm mm 859 Oct 4 17:56 lcmp.sh
-rw-r–r– 1 mm mm 149548 Dec 11 2021 mKickCC0.wav
drwxr-xr-x 2 mm mm 4096 Jan 7 15:49 obj (The files in this directory were all updated)
-rw-r–r– 1 mm mm 789 Jan 2 2023 two.adb
-rwxrwxr-x 1 mm mm 1104064 Jan 7 15:49 two_gnu (This file is the new executable)

lcmp.sh creates executable on directory adaExample/.

Execute

~/ada/aoa12nov20/adaOpenAL/adaExample$./two_gnu
Hit to begin

Enter and output both sound channels simultaneously (mixed monaural)

hit to end kick

Enter and output only “choir” sound (monaural)

hit to end choir

Enter and stop audio

This program outputs both sounds as monaural.

Build with GnatStudio

Startup GnatStudio and Setting

~/ada/aoal6oct23/adaOpenAL/adaExample$ gnatstudio

Choose “Create New Project” and “Simple Ada Project”

Press Apply and the new project was created.

Choose “Edit” and ” Project-Properties”

Create source files list. File: ~ada/aoal6oct23/adaOpenAL/adaExample/Two-SourceFiles.txt

two.adb
snd.adb
snd.ads
snd4ada.adb
snd4ada.ads
sndloop.adb
sndloop.ads
alc_h.ads
al_h.ads
oal.cpp
oal.hpp
oal_hpp.ads
al.h
alc.h
alext.h
efx.h
efx-creative.h

Setup to use Source file names list Two-SourceFiles.txt

Setup Main program name

Setup C++ special header file name

There is “oal.hpp” file in OalBindig directory.

Setup Ada Linker option

Press “Save” to update Project-Properties settings

Auto generated file: two.gpr

project Two is

project Two is

   for Source_Dirs use (".", "../../adaOpenAL", "../OalBinding", "../OalBinding/incoal");
   for Object_Dir use "obj";
   for Main use ("two.adb");
   for Languages use ("Ada", "C", "C++");
   for Source_List_File use "Two-SourceFiles.txt";

   package Naming is
      for Spec_Suffix ("C++") use ".hpp";
   end Naming;

   package Linker is
      for Switches ("ada") use ("-lopenal");
   end Linker;

end Two;

Build Project

Execute

Copy 2 audio files to ./obj/ directory before run:

choir.wav, kick.wav

Run with command line or gnatstudio “Run” button.

~/ada/aoal6oct23/adaOpenAL/adaExample/obj$ ./two
Hit to begin Enter

Mixed “choir” and “kick” monaural audio outputs.

hit to end kick Enter

Single “choir” monaural audio outputs.

hit to end choir Enter

Finish.

This program outputs both audios as monaural, it doesn’t output each Left and Right individual audio channel.