GetMixerChannelGain
static_cast<float *>(value)[0] = GAIN_TO_DB((input->GetMixerChannelGain(0) + input->GetMixerChannelGain(1)) / 2);
static_cast<float *>(value)[chan] = GAIN_TO_DB(input->GetMixerChannelGain(chan));
float l = input->GetMixerChannelGain(0);
float r = input->GetMixerChannelGain(1);
float l = input->GetMixerChannelGain(0);
float r = input->GetMixerChannelGain(1);
input->SetMixerChannelGain(0, input->GetMixerChannelGain(0) * f);
input->SetMixerChannelGain(1, input->GetMixerChannelGain(1) * f);
float l = input->GetMixerChannelGain(0);
float r = input->GetMixerChannelGain(1);
float GetMixerChannelGain(int mixerChannel);