void _mmcamcorder_sound_focus_cb(int id, mm_sound_focus_type_e focus_type,
mm_sound_focus_state_e focus_state, const char *reason_for_change,
int option, const char *additional_info, void *user_data);
void _mmcamcorder_sound_focus_cb(int id, mm_sound_focus_type_e focus_type,
mm_sound_focus_state_e focus_state, const char *reason_for_change,
int option, const char *additional_info, void *user_data);