1 /* 2 * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU Lesser General Public License as published by 6 * the Free Software Foundation version 2.1 of the License. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU Lesser General Public License for more details. 12 * 13 * You should have received a copy of the GNU Lesser General Public License 14 * along with this program; if not, write to the Free Software 15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 16 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html 17 * 18 * Described at ETSI EN 300 468 V1.11.1 (2010-04) 19 */ 20 21 /** 22 * @file desc_ca_identifier.h 23 * @ingroup descriptors 24 * @brief Provides the descriptors for the Conditional Access identifier 25 * @copyright GNU Lesser General Public License version 2.1 (LGPLv2.1) 26 * @author Andre Roth 27 * 28 * @par Relevant specs 29 * The descriptor described herein is defined at: 30 * - ETSI EN 300 468 V1.11.1 (2010-04) 31 * 32 * @par Bug Report 33 * Please submit bug reports and patches to linux-media@vger.kernel.org 34 */ 35 36 #ifndef _CA_IDENTIFIER_H 37 #define _CA_IDENTIFIER_H 38 39 #include <libdvbv5/descriptors.h> 40 41 /** 42 * @struct dvb_desc_ca_identifier 43 * @ingroup descriptors 44 * @brief Indicates if a particular bouquet, service or event is associated 45 * with a CA system 46 * 47 * @param type descriptor tag 48 * @param length descriptor length 49 * @param next pointer to struct dvb_desc 50 * @param caid_count Number of CA IDs 51 * @param caids CA Identifier IDs 52 */ 53 struct dvb_desc_ca_identifier { 54 uint8_t type; 55 uint8_t length; 56 struct dvb_desc *next; 57 58 uint8_t caid_count; 59 uint16_t *caids; 60 61 } __attribute__((packed)); 62 63 struct dvb_v5_fe_parms; 64 65 /** @brief initial descriptor field at dvb_desc_ca_identifier struct */ 66 #define dvb_desc_ca_identifier_field_first ca_id 67 /** @brief last descriptor field at dvb_desc_ca_identifier struct */ 68 #define dvb_desc_ca_identifier_field_last privdata 69 70 #ifdef __cplusplus 71 extern "C" { 72 #endif 73 74 /** 75 * @brief Initializes and parses the CA identifier descriptor 76 * @ingroup descriptors 77 * 78 * @param parms struct dvb_v5_fe_parms pointer to the opened device 79 * @param buf buffer containing the descriptor's raw data 80 * @param desc pointer to struct dvb_desc to be allocated and filled 81 * 82 * This function allocates a the descriptor and fills the fields inside 83 * the struct. It also makes sure that all fields will follow the CPU 84 * endianness. Due to that, the content of the buffer may change. 85 * 86 * @return On success, it returns the size of the allocated struct. 87 * A negative value indicates an error. 88 */ 89 int dvb_desc_ca_identifier_init(struct dvb_v5_fe_parms *parms, 90 const uint8_t *buf, struct dvb_desc *desc); 91 92 /** 93 * @brief Prints the content of the CA identifier descriptor 94 * @ingroup descriptors 95 * 96 * @param parms struct dvb_v5_fe_parms pointer to the opened device 97 * @param desc pointer to struct dvb_desc 98 */ 99 void dvb_desc_ca_identifier_print(struct dvb_v5_fe_parms *parms, 100 const struct dvb_desc *desc); 101 102 /** 103 * @brief Frees all data allocated by the CA identifier descriptor 104 * @ingroup descriptors 105 * 106 * @param desc pointer to struct dvb_desc to be freed 107 */ 108 void dvb_desc_ca_identifier_free(struct dvb_desc *desc); 109 110 #ifdef __cplusplus 111 } 112 #endif 113 114 #endif 115