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/dvb/ca_identifier_descriptor.h | 94 ++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 lib/libucsi/dvb/ca_identifier_descriptor.h (limited to 'lib/libucsi/dvb/ca_identifier_descriptor.h') diff --git a/lib/libucsi/dvb/ca_identifier_descriptor.h b/lib/libucsi/dvb/ca_identifier_descriptor.h new file mode 100644 index 0000000..ac670a9 --- /dev/null +++ b/lib/libucsi/dvb/ca_identifier_descriptor.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_DVB_CA_IDENTIFIER_DESCRIPTOR +#define _UCSI_DVB_CA_IDENTIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include +#include + +/** + * dvb_ca_identifier_descriptor structure. + */ +struct dvb_ca_identifier_descriptor { + struct descriptor d; + + /* uint16_t ca_system_ids[] */ +} __ucsi_packed; + +/** + * Process a dvb_ca_identifier_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ca_identifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ca_identifier_descriptor* + dvb_ca_identifier_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + uint8_t *buf = (uint8_t*) d + 2; + uint32_t pos = 0; + + if (len % 2) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos+=2; + } + + return (struct dvb_ca_identifier_descriptor*) d; +} + +/** + * Accessor for the ca_system_ids field of a dvb_ca_identifier_descriptor. + * + * @param d Generic descriptor pointer. + * @return Pointer to the field. + */ +static inline uint16_t * + dvb_ca_identifier_descriptor_ca_system_ids(struct dvb_ca_identifier_descriptor *d) +{ + return (uint16_t *) ((uint8_t *) d + sizeof(struct dvb_ca_identifier_descriptor)); +} + +/** + * Calculate the number of entries in the ca_system_ids field of a dvb_ca_identifier_descriptor. + * + * @param d dvb_ca_identifier_descriptor pointer. + * @return Number of entries. + */ +static inline int + dvb_ca_identifier_descriptor_ca_system_ids_count(struct dvb_ca_identifier_descriptor *d) +{ + return d->d.len >> 1; +} + +#ifdef __cplusplus +} +#endif + +#endif -- cgit v1.2.3