mmal_es_specific_format
union mmal_es_specific_format *es; /* Type specific
union mmal_es_specific_format es; /* es type specific data */
union mmal_es_specific_format es;
union mmal_es_specific_format es;
sizeof(union mmal_es_specific_format));
sizeof(union mmal_es_specific_format));
union mmal_es_specific_format es;