How to play raw PCM audio?

DVSoftware · February 13, 2015, 9:37pm

Hi,
I’m trying to make a music game, similar to audiosurf, and I’m using mpg123 to decode MP3 files, but i have no idea how to actually play the music from raw PCM data i get from the decoder?
I tried using USoundWave but setting RawPCMData and RawPCMDataSize results in a crash (CrashIfClientPRovidedBogusAudioBufferList).

Can anyone post a short example?

anonymous_user_205b7b6d · February 14, 2015, 1:09pm

If you look in Engine/Plugins/Runtime/SoundMod you’ll find the plugin which provides MOD support which does basically what you want to do - decode on your own and present the engine with a constantly updating stream of audio data.

Should give you a place to start

DVSoftware · February 14, 2015, 6:42pm

Thank you, i eventually figured out how to play using USoundWaveStreaming and i’ll post a code tomorrow so others can use it

CrankcaseAudio · September 15, 2015, 5:04am

I’d be interested in any project example you have that can use USoundWaveProcedural (renamed in 4.9 from USoundWaveStreaming) ?

I’m trying to create a procedural audio source too

anonymous_user_0a1e6720 · October 21, 2016, 11:06pm

So you did get it working? Is it possible to share the code?

Joviex · January 8, 2017, 4:43am

Guess that would be a no. =D

kamrann · January 10, 2017, 3:53am

There’s a heap of good, up-to-date info on this from Epic’s audio programmer, hidden away in a thread on the feedback forum:
Stop using private variables in virtual functions please! - Feedback for Unreal Engine team - Unreal Engine Forums!

sichaosun · October 19, 2022, 7:49am

hello，I have a question about how to present the engine with a constantly updating stream of audio data？