diff options
Diffstat (limited to 'lib/libucsi/dvb/parental_rating_descriptor.h')
| -rw-r--r-- | lib/libucsi/dvb/parental_rating_descriptor.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/parental_rating_descriptor.h b/lib/libucsi/dvb/parental_rating_descriptor.h new file mode 100644 index 0000000..72ecd0a --- /dev/null +++ b/lib/libucsi/dvb/parental_rating_descriptor.h @@ -0,0 +1,135 @@ +/* + * 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_DVB_PARENTAL_RATING_DESCRIPTOR +#define _UCSI_DVB_PARENTAL_RATING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Defined values for the rating field. + */ +enum { + DVB_PARENTAL_RATING_MIN_3YEARS = 0x01, + DVB_PARENTAL_RATING_MIN_4YEARS = 0x02, + DVB_PARENTAL_RATING_MIN_5YEARS = 0x03, + DVB_PARENTAL_RATING_MIN_6YEARS = 0x04, + DVB_PARENTAL_RATING_MIN_7YEARS = 0x05, + DVB_PARENTAL_RATING_MIN_8YEARS = 0x06, + DVB_PARENTAL_RATING_MIN_9YEARS = 0x07, + DVB_PARENTAL_RATING_MIN_10YEARS = 0x08, + DVB_PARENTAL_RATING_MIN_11YEARS = 0x09, + DVB_PARENTAL_RATING_MIN_12YEARS = 0x0a, + DVB_PARENTAL_RATING_MIN_13YEARS = 0x0b, + DVB_PARENTAL_RATING_MIN_14YEARS = 0x0c, + DVB_PARENTAL_RATING_MIN_15YEARS = 0x0d, + DVB_PARENTAL_RATING_MIN_16YEARS = 0x0e, + DVB_PARENTAL_RATING_MIN_17YEARS = 0x0f, +}; + +/** + * dvb_parental_rating_descriptor structure. + */ +struct dvb_parental_rating_descriptor { + struct descriptor d; + + /* struct dvb_parental_rating ratings[] */ +} __ucsi_packed; + +/** + * An entry in the ratings field of a dvb_parental_rating_descriptor. + */ +struct dvb_parental_rating { + iso639country_t country_code; + uint8_t rating; +} __ucsi_packed; + +/** + * Process a dvb_parental_rating_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_parental_rating_descriptor pointer, or NULL on error. + */ +static inline struct dvb_parental_rating_descriptor* + dvb_parental_rating_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct dvb_parental_rating)) + return NULL; + + return (struct dvb_parental_rating_descriptor*) d; +} + +/** + * Iterator for entries in the ratings field of a dvb_parental_rating_descriptor. + * + * @param d dvb_parental_rating_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_parental_rating. + */ +#define dvb_parental_rating_descriptor_ratings_for_each(d, pos) \ + for ((pos) = dvb_parental_rating_descriptor_ratings_first(d); \ + (pos); \ + (pos) = dvb_parental_rating_descriptor_ratings_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_parental_rating* + dvb_parental_rating_descriptor_ratings_first(struct dvb_parental_rating_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_parental_rating *) + ((uint8_t*) d + sizeof(struct dvb_parental_rating_descriptor)); +} + +static inline struct dvb_parental_rating* + dvb_parental_rating_descriptor_ratings_next(struct dvb_parental_rating_descriptor *d, + struct dvb_parental_rating *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_parental_rating); + + if (next >= end) + return NULL; + + return (struct dvb_parental_rating *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif |