Method SetPitch

src/audio_generic.cpp:533–539

}

void GenericAudio::BgmChannel::SetPitch(int pitch) {
	if (midi_out_used) {
		instance->midi_thread->GetMidiOut().SetPitch(pitch);
	} else if (decoder) {
		decoder->SetPitch(pitch);
	}
}

bool GenericAudio::BgmChannel::IsUsed() const {
	return decoder || midi_out_used;