Get true peak of each channel (as defined by ITU-R BS.1770) in this frame. Depending on when this function is called, you may get metering data computed in the previous frame only.
Returns:
Vector of linear true peak levels, corresponding to each channel. NULL if AK_EnableBusMeter_TruePeak is not set (see IAkMixerPluginContext::SetMeteringFlags() or AK::SoundEngine::RegisterBusMeteringCallback()).