Properly initialize audio resource when playing a native sound with a specified start time.
#codereview Aaron.McLeran
[CL 2588686 by Marc Audy in Main branch]
- Code additions to download data from Google Play Store if not on device
- Changes deploy to write new meta-data
- Changes to Android deploy to cache ini files once and re-read instead of the constant open/read we had
- Added template/code generation system so we can now generate Java files based on a template for project dependent names etc
[CL 2521147 by Robert Jones in Main branch]
Original Notes (adapted)
Implementation and Integration of Oculus Audio SDK for VR Audio Spatialization
- Adding new audio extension which wraps the oculus audio sdk and the new XAPO plugin
- Adding new XAPO (Xaudio2 Audio Processing Object) effect for processing mono audio source streams inside the new module
- Added new enumeration which allows users to select which spatialization algorithm to use for spatialized mono sources
- Refactored the regular sound source spatialization/effect in XAudio2 device code to support the new HRTF mono-to-stereo effect
- Designed feature so that if the sound spatialization module isn't used, the spatialization will default to normal spatialization algorithm
Notes on implementation:
- Because the audio engine doesn't bifurcate spatialized vs. non-spatialized sound sources into separate source pools, I had to create up-front the effects for the full number of supported sounds 32). This is because the oculus sdk requires at initialization the total number of sound sources that will be used in the SDK.
- Because the oculus SDK refers to sound source instances by index (into the pre-allocated array of sources set at init), I had to save each sound source's index so that it can be used on the HRTF XAPO effect, and then piped to the oculus SDK inside the UE audio extension.
- The audio engine assumes that mono-sources will be treated a certain way (during send-routing and spatialization). Because this new HRTF effect is effectively turning mono-sources into stereo-sources, some code had to be changed to send/route these audio sources as if they were stereo.
- This implementation is slightly different than the original GDC implementation to better work with multiple audio devices. Each audio device creates an IAudioSpatializationAlgorithm object which contains the oculus HRTF processing contexts.
#codereview Nick.Whiting Marc.Audy
[CL 2488287 by Aaron McLeran in Main branch]
Rob asked me to back out GENERATED_*_BODY -> GENERATED_BODY change for now until the "_Validate and _Implementation auto-generation" discussion is over.
#codereview Robert.Manuszewski
[CL 2481343 by Jaroslaw Palczynski in Main branch]
