/* * section and descriptor parser * * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) * * 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_DESCRIPTOR_H #define _UCSI_DESCRIPTOR_H 1 #ifdef __cplusplus extern "C" { #endif #include #include #include /** * Generic descriptor header. */ struct descriptor { uint8_t tag; uint8_t len; } __ucsi_packed; /** * Retreive pointer to the next descriptor structure. * * @param buf The buffer of descriptors. * @param len Size of the buffer. * @param pos Current descriptor. * @return Pointer to next descriptor, or NULL if there are none. */ static inline struct descriptor * next_descriptor(uint8_t * buf, size_t len, struct descriptor * pos) { uint8_t* next; if (pos == NULL) return NULL; next = (uint8_t*) pos + 2 + pos->len; if (next >= buf + len) return NULL; return (struct descriptor *) next; } /** * The unknown descriptor. */ struct unknown_descriptor { struct descriptor d; /* uint8_t data [] */ } __ucsi_packed; /** * Retrieve pointer to the unknown descriptor's data field. * * @param d The descriptor. * @return Pointer to the data field. */ static inline uint8_t * unknown_descriptor_data(struct unknown_descriptor *d) { return (uint8_t *) d + sizeof(struct unknown_descriptor); } /** * Retrieve size of unknown descriptor's data field. * * @param d The descriptor. * @return Size of data field in bytes. */ static inline int unknown_descriptor_data_size(struct unknown_descriptor *d) { return d->d.len; } /******************************** PRIVATE CODE ********************************/ static inline int verify_descriptors(uint8_t * buf, size_t len) { size_t pos = 0; while (pos < len) { if ((pos + 2) > len) return -1; pos += 2 + buf[pos+1]; } if (pos != len) return -1; return 0; } #ifdef __cplusplus } #endif #endif /option>
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# Sweden - Nyköping
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 498000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE