Get next volumes as computed by the sound engine for this input.
参数:
out_mxPrevVolumes
Returned in/out channel volume distribution corresponding to the beginning of the buffer. Must be preallocated (see AK::SpeakerVolumes::Matrix services).
out_mxNextVolumes
Returned in/out channel volume distribution corresponding to the end of the buffer. Must be preallocated (see AK::SpeakerVolumes::Matrix services).