How to setup and use OpenAL for game audio in C++ (Using Visual Studio) tutorial

After watching this, if you're interested in seeing how I put together a simple audio system using OpenAL, then check out https://www.youtube.com/watch?v=5QT2veNjv80&feature=youtu.be

0:00 Start
0:30 Disclaimer and setting expectations
0:49 OpenAL Soft information
1:11 What is CMake
1:26 Getting OpenAL Soft
2:00 Generating OpenAL Soft project files with CMake
2:12 Building OpenAL with visual studio
2:51 Creating and setting up an OpenAL game test project (includes, libraries, dlls, etc)
3:00 Creating folders for OpenAL library and moving files
4:13 Configuring project include and linker settings
4:23 Set up includes
5:09 Set up library directory location
5:41 Set up linker
5:55 OpenAL set up is complete, testing include
6:07 What is OpenAL and how to load audio files
6:17 Setting up AudioFile (GPL) file loading library (I suggest using dr_lib instead, see end of video but this part should be watched to help understand what dr_lib is doing)
7:00 An example .wav sound to load
7:30 Fixing Audio file warnings
7:56 What is PCM data and how do I get it from a file?
8:29 Extracting PCM data by modifying AudioFile library
8:51 -- Begin OpenAL Code --
8:58 OpenAL error checking
9:15 getting OpenAL device and setting up context on the device
10:03 Setting up the Listener
11:03 mono vs stereo files for OpenAL buffers
11:24 load an audio file with AudioFile.h
11:34 load sound pcm data into OpenAL buffer
12:29 configuring an OpenAL audio source
13:22 playing a sound source and waiting for it to finish
13:48 cleaning up resources
14:14 testing 3D positioning
14:37 getting the project from the video
15:25 getting dr_lib (dr_wav) - a free audio file loading library that is public domain (less restrictive than gpl)
16:10 dr_wav file loading
17:06 using dr_wav loaded data with OpenAL

_____________________________________________________________________________________________
Twitter: https://twitter.com/mattstone2728
Instagram: https://www.instagram.com/mattstone2728/
_____________________________________________________________________________________________
My repository with the sample code:
https://github.com/mattstone22133/OpenAL_TestProject

An awesome paper talking about playing audio in OpenAL
https://research.ncl.ac.uk/game/mastersdegree/workshops/audio/Sound%20Workshop.pdf

OpenSoft github
https://github.com/kcat/openal-soft

Dr Wav (better audio library for loading audio files)
https://github.com/mackron/dr_libs/blob/master/dr_wav.h

Looks like there is also a dr_mp3 for converting mp3s, but I HAVE NOT TESTED IT.
https://github.com/mackron/dr_libs/blob/master/dr_mp3.h
_____________________________________________________________________________________________
AudioFile for loading audio files; this is a GPL license which I believe means you need to make your game open source; best to use dr_wav instead but since I used this in the beginning of the video (dr_wav at the end) here is a link.
https://github.com/adamstark/AudioFile

Complete guide to OpenAL
https://indiegamedev.net/2020/02/15/the-complete-guide-to-openal-with-c-part-1-playing-a-sound/

Some more OpenAL examples
https://ffainelli.github.io/openal-example/
https://github.com/ffainelli/openal-example/blob/master/openal-example.c
_____________________________________________________________________________________________
How is the time dilation swoosh done at the beginning of the video?

I have a global pitch multiplier that gets applied to all sources. I influence this global pitch by the current time dilation factor. Consider this code:

```
float AudioSystem::calculatePitch(float rawPitch)
{
return rawPitch * cachedTimeDilation;
}
```
then called like
```
//md is audio meta data I store
if (md.dirtyFlags.bPitch || bDirtyAllPitch)
{
float pitch = calculatePitch(ud.pitch + md.calculatedPitchVariation);
alec(alSourcef(src, AL_PITCH, pitch));
md.dirtyFlags.bPosition = false;
}
```
_____________________________________________________________________________________________

disclaimer: for my employment status please check my twitter information or youtube channel information. This content is not in any way associated with my employer and opinions are my own.