/* * 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_SERVICE_LIST_DESCRIPTOR #define _UCSI_DVB_SERVICE_LIST_DESCRIPTOR 1 #ifdef __cplusplus extern "C" { #endif #include #include /** * dvb_service_list_descriptor structure. */ struct dvb_service_list_descriptor { struct descriptor d; /* struct dvb_service_list_service services[] */ } __ucsi_packed; /** * An entry in the services field of a dvb_service_list_descriptor. */ struct dvb_service_list_service { uint16_t service_id; uint8_t service_type; } __ucsi_packed; /** * Process a dvb_service_list_descriptor. * * @param d Generic descriptor structure. * @return dvb_service_list_descriptor pointer, or NULL on error. */ static inline struct dvb_service_list_descriptor* dvb_service_list_descriptor_codec(struct descriptor* d) { uint32_t pos = 0; uint32_t len = d->len; uint8_t *p = (uint8_t*) d + 2; if (len % sizeof(struct dvb_service_list_service)) return NULL; while(pos < len) { bswap16(p+pos); pos += sizeof(struct dvb_service_list_service); } return (struct dvb_service_list_descriptor*) d; } /** * Iterator for services field in a dvb_service_list_descriptor. * * @param d dvb_service_list_descriptor pointer. * @param pos Variable containing a pointer to the current dvb_service_list_service. */ #define dvb_service_list_descriptor_services_for_each(d, pos) \ for ((pos) = dvb_service_list_descriptor_services_first(d); \ (pos); \ (pos) = dvb_service_list_descriptor_services_next(d, pos)) /******************************** PRIVATE CODE ********************************/ static inline struct dvb_service_list_service* dvb_service_list_descriptor_services_first(struct dvb_service_list_descriptor *d) { if (d->d.len == 0) return NULL; return (struct dvb_service_list_service *) ((uint8_t*) d + sizeof(struct dvb_service_list_descriptor)); } static inline struct dvb_service_list_service* dvb_service_list_descriptor_services_next(struct dvb_service_list_descriptor *d, struct dvb_service_list_service *pos) { uint8_t *end = (uint8_t*) d + 2 + d->d.len; uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_service_list_service); if (next >= end) return NULL; return (struct dvb_service_list_service *) next; } #ifdef __cplusplus } #endif #endif ent */ .highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */ .highlight .k { color: #008800; font-weight: bold } /* Keyword */ .highlight .ch { color: #888888 } /* Comment.Hashbang */ .highlight .cm { color: #888888 } /* Comment.Multiline */ .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888888 } /* Comment.Single */ .highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */ .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; 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#
# $Id: README,v 1.24 2003/08/01 05:15:42 reinelt Exp $
#

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