/* * section and descriptor parser * * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ #ifndef _UCSI_MPEG_REGISTRATION_DESCRIPTOR #define _UCSI_MPEG_REGISTRATION_DESCRIPTOR 1 #ifdef __cplusplus extern "C" { #endif #include <libucsi/descriptor.h> #include <libucsi/endianops.h> /** * mpeg_registration_descriptor structure. */ struct mpeg_registration_descriptor { struct descriptor d; uint32_t format_identifier; /* uint8_t additional_id_info[] */ } __ucsi_packed; /** * Process an mpeg_registration_descriptor. * * @param d Pointer to the generic descriptor structure. * @return Pointer to the mpeg_registration_descriptor structure, or NULL on error. */ static inline struct mpeg_registration_descriptor* mpeg_registration_descriptor_codec(struct descriptor* d) { if (d->len < (sizeof(struct mpeg_registration_descriptor) - 2)) return NULL; bswap32((uint8_t*) d + 2); return (struct mpeg_registration_descriptor*) d; } /** * Retrieve a pointer to the additional_id_info field of the * mpeg_registration_descriptor structure. * * @param d Pointer to the mpeg_registration_descriptor structure. * @return Pointer to the field. */ static inline uint8_t * mpeg_registration_descriptor_additional_id_info(struct mpeg_registration_descriptor *d) { return (uint8_t *) d + sizeof(struct mpeg_registration_descriptor); } /** * Determine number of bytes in the additional_id_info field of the * mpeg_registration_descriptor structure. * * @param d Pointer to the mpeg_registration_descriptor structure. * @return Number of bytes. */ static inline int mpeg_registration_descriptor_additional_id_info_length(struct mpeg_registration_descriptor *d) { return d->d.len - 4; } #ifdef __cplusplus } #endif #endif