void _WM_do_control_channel_volume(struct _mdi *mdi,
                                      struct _event_data *data) {
    uint8_t ch = data->channel;
    MIDI_EVENT_DEBUG(__FUNCTION__,ch, data->data.value);

    mdi->channel[ch].volume = data->data.value;
    _WM_AdjustChannelVolumes(mdi, ch);
}
Unknown