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author | etobi <git@e-tobi.net> | 2013-09-03 09:48:41 +0200 |
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committer | etobi <git@e-tobi.net> | 2013-09-03 09:48:41 +0200 |
commit | ab959d7b4194715870128e616b8e29d4a101e488 (patch) | |
tree | 61a746231d30817be73416a7d67763fd677a1042 /lib/libucsi/dvb/local_time_offset_descriptor.h | |
parent | 6b350466c4902c5b137e0efaf1d189128a7f18f5 (diff) | |
download | linux-dvb-apps-753ce5b9809deed38d6db404dc72e1e0e8ac4b29.tar.gz |
Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207
Diffstat (limited to '')
-rw-r--r-- | lib/libucsi/dvb/local_time_offset_descriptor.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/local_time_offset_descriptor.h b/lib/libucsi/dvb/local_time_offset_descriptor.h new file mode 100644 index 0000000..d0eebb3 --- /dev/null +++ b/lib/libucsi/dvb/local_time_offset_descriptor.h @@ -0,0 +1,127 @@ +/* + * 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_LOCAL_TIME_OFFSET_DESCRIPTOR +#define _UCSI_DVB_LOCAL_TIME_OFFSET_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> +#include <libucsi/dvb/types.h> + +/** + * dvb_local_time_offset_descriptor parameter. + */ +struct dvb_local_time_offset_descriptor { + struct descriptor d; + + /* struct dvb_local_time_offset offsets[] */ +} __ucsi_packed; + +/** + * Entry in the offsets field of dvb_local_time_offset_descriptor. + */ +struct dvb_local_time_offset { + iso639country_t country_code; + EBIT3(uint8_t country_region_id : 6; , + uint8_t reserved : 1; , + uint8_t local_time_offset_polarity : 1; ); + dvbhhmm_t local_time_offset; + dvbdate_t time_of_change; + dvbhhmm_t next_time_offset; +} __ucsi_packed; + +/** + * Process a dvb_local_time_offset_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_local_time_offset_descriptor pointer, or NULL on error. + */ +static inline struct dvb_local_time_offset_descriptor* + dvb_local_time_offset_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + uint32_t pos = 0; + + if (len % sizeof(struct dvb_local_time_offset)) + return NULL; + + while(pos < len) { + pos += sizeof(struct dvb_local_time_offset); + } + + return (struct dvb_local_time_offset_descriptor*) d; +} + +/** + * Iterator for the offsets field of a dvb_local_time_offset_descriptor. + * + * @param d dvb_local_time_offset_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_local_time_offset. + */ +#define dvb_local_time_offset_descriptor_offsets_for_each(d, pos) \ + for ((pos) = dvb_local_time_offset_descriptor_offsets_first(d); \ + (pos); \ + (pos) = dvb_local_time_offset_descriptor_offsets_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_local_time_offset* + dvb_local_time_offset_descriptor_offsets_first(struct dvb_local_time_offset_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_local_time_offset *) + ((uint8_t*) d + sizeof(struct dvb_local_time_offset_descriptor)); +} + +static inline struct dvb_local_time_offset* + dvb_local_time_offset_descriptor_offsets_next(struct dvb_local_time_offset_descriptor *d, + struct dvb_local_time_offset *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_local_time_offset); + + if (next >= end) + return NULL; + + return (struct dvb_local_time_offset *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif |