Global Outflags

All audio effects must set either PF_OutFlag_AUDIO_EFFECT_TOO or PF_OutFlag_AUDIO_EFFECT_ONLY.

PF_OutFlag_I_USE_AUDIO is for visual effects that check out audio data, but don't modify it.

PF_OutFlag_AUDIO_FLOAT_ONLY, PF_OutFlag_AUDIO_IIR and PF_OutFlag_I_SYNTHESIZE_AUDIO provide greater control over audio output (see PF_OutFlags for more details).