From ab959d7b4194715870128e616b8e29d4a101e488 Mon Sep 17 00:00:00 2001 From: etobi Date: Tue, 3 Sep 2013 09:48:41 +0200 Subject: Imported Upstream version 1.1.1+rev1207 --- lib/libucsi/mpeg/cat_section.h | 94 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 lib/libucsi/mpeg/cat_section.h (limited to 'lib/libucsi/mpeg/cat_section.h') diff --git a/lib/libucsi/mpeg/cat_section.h b/lib/libucsi/mpeg/cat_section.h new file mode 100644 index 0000000..7ed34a3 --- /dev/null +++ b/lib/libucsi/mpeg/cat_section.h @@ -0,0 +1,94 @@ +/* + * 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_CAT_SECTION_H +#define _UCSI_MPEG_CAT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include + +/** + * mpeg_cat_section structure. + */ +struct mpeg_cat_section { + struct section_ext head; + + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process an mpeg_cat_section. + * + * @param section The generic section_ext structure. + * @return Pointer to an mpeg_cat_section structure, or NULL on error. + */ +extern struct mpeg_cat_section *mpeg_cat_section_codec(struct section_ext *section); + +/** + * Convenience iterator for descriptors field of an mpeg_cat_section. + * + * @param cat The mpeg_cat_section pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define mpeg_cat_section_descriptors_for_each(cat, pos) \ + for ((pos) = mpeg_cat_section_descriptors_first(cat); \ + (pos); \ + (pos) = mpeg_cat_section_descriptors_next(cat, pos)) + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + mpeg_cat_section_descriptors_first(struct mpeg_cat_section *cat) +{ + size_t pos = sizeof(struct mpeg_cat_section); + + if (pos >= section_ext_length(&cat->head)) + return NULL; + + return (struct descriptor*)((uint8_t *) cat + pos); +} + + +static inline struct descriptor * + mpeg_cat_section_descriptors_next(struct mpeg_cat_section *cat, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) cat + sizeof(struct mpeg_cat_section), + section_ext_length(&cat->head) - sizeof(struct mpeg_cat_section), + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif -- cgit v1.2.3