void dcp_content_type_changed (wxCommandEvent &);
void dcp_ab_toggled (wxCommandEvent &);
void scaler_changed (wxCommandEvent &);
void audio_gain_changed (wxCommandEvent &);
void audio_gain_calculate_button_clicked (wxCommandEvent &);
void dcp_content_type_changed (wxCommandEvent &);
void dcp_ab_toggled (wxCommandEvent &);
void scaler_changed (wxCommandEvent &);
void audio_gain_changed (wxCommandEvent &);
void audio_gain_calculate_button_clicked (wxCommandEvent &);