[openal] Can I set the HRTF PATH by any method other than alsoft.ini?

[Chris Robinson]

On Sat, 15 Aug 2020 22:30:23 +0300
Sean <s.tolstoyevski at gmail.com> wrote:

> Hi all,
> 
> I know that OpenAL can be configured with the alsoft.ini file.
> But for this, the user must copy the HRTF files to the appropriate 
> paths. I don't think every user can mess with this. And in some 
> projects, I want to package HRTF files with the project.
> 
> Is there a solution to introduce the PATH of HRTF files to
> Openal-Soft without using the  alsoft.ini file in Openal-Soft?

You can set the ALSOFT_LOCAL_PATH environment variable in your app to
a path somewhere for your program, and OpenAL Soft will look in the
openal\hrtf\ subfolder of that path. So for example, if you call

_wputenv_s(L"ALSOFT_LOCAL_PATH", L"C:\\Program Files\\MyApp");

Then OpenAL Soft will search C:\Program Files\MyApp\openal\hrtf for
extra HRTF files. The environment variable should be set as early as
possible in your app, preferably before making any OpenAL function
calls.