/***************************************************************************** * desc_5a.h: ETSI EN 300 468 Descriptor 0x5a: Terrestrial delivery system ***************************************************************************** * Copyright (C) 2009-2010 VideoLAN * * Authors: Christophe Massiot * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject * to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *****************************************************************************/ /* * Normative references: * - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems) */ #ifndef __BITSTREAM_DVB_DESC_5A_H__ #define __BITSTREAM_DVB_DESC_5A_H__ #include /* PRIu64 */ #include #include #include #ifdef __cplusplus extern "C" { #endif /***************************************************************************** * Descriptor 0x5a: Terrestrial delivery system descriptor *****************************************************************************/ #define DESC5A_HEADER_SIZE (DESC_HEADER_SIZE + 11) static inline uint64_t desc5a_get_frequency(const uint8_t *p_desc) { return (((uint64_t)p_desc[2] << 24) | (p_desc[3] << 16) | (p_desc[4] << 8) | p_desc[5]) * 10; /* Hz */ } static inline uint8_t desc5a_get_bandwidth(const uint8_t *p_desc) { return p_desc[6] >> 5; } static inline bool desc5a_get_priority(const uint8_t *p_desc) { return !!((p_desc[6] >> 4) & 0x1); } /* ! inverted logic ! */ static inline bool desc5a_get_timeslicing(const uint8_t *p_desc) { return !((p_desc[6] >> 3) & 0x1); } /* ! inverted logic ! */ static inline bool desc5a_get_mpefec(const uint8_t *p_desc) { return !((p_desc[6] >> 2) & 0x1); } static inline uint8_t desc5a_get_constellation(const uint8_t *p_desc) { return p_desc[7] >> 6; } static inline uint8_t desc5a_get_hierarchy(const uint8_t *p_desc) { return (p_desc[7] >> 3) & 0x7; } static inline uint8_t desc5a_get_coderatehp(const uint8_t *p_desc) { return p_desc[7] & 0x7; } static inline uint8_t desc5a_get_coderatelp(const uint8_t *p_desc) { return p_desc[8] >> 5; } static inline uint8_t desc5a_get_guard(const uint8_t *p_desc) { return (p_desc[8] >> 3) & 0x3; } static inline uint8_t desc5a_get_transmission(const uint8_t *p_desc) { return (p_desc[8] >> 1) & 0x3; } static inline bool desc5a_get_otherfrequency(const uint8_t *p_desc) { return !!(p_desc[8] & 0x1); } static inline bool desc5a_validate(const uint8_t *p_desc) { return desc_get_length(p_desc) >= DESC5A_HEADER_SIZE - DESC_HEADER_SIZE; } static inline void desc5a_print(const uint8_t *p_desc, f_print pf_print, void *opaque, print_type_t i_print_type) { uint8_t i_bandwidth = desc5a_get_bandwidth(p_desc); uint8_t i_constellation = desc5a_get_constellation(p_desc); const char *psz_constellation = "reserved"; uint8_t i_hierarchy = desc5a_get_hierarchy(p_desc); const char *psz_hierarchy = ""; bool b_hierarchy = !!(i_hierarchy & 0x3); uint8_t i_guard = desc5a_get_guard(p_desc); const char *psz_guard = ""; uint8_t i_transmission = desc5a_get_transmission(p_desc); const char *psz_transmission = "reserved"; switch (i_bandwidth) { case 0x0: i_bandwidth = 8; break; case 0x1: i_bandwidth = 7; break; case 0x2: i_bandwidth = 6; break; case 0x3: i_bandwidth = 5; break; default: i_bandwidth = 0; break; } switch (i_constellation) { case 0x0: psz_constellation = "QPSK"; break; case 0x1: psz_constellation = "16-qam"; break; case 0x2: psz_constellation = "64-qam"; break; } switch (i_hierarchy) { case 0x0: psz_hierarchy = "none"; break; case 0x1: psz_hierarchy = "1"; break; case 0x2: psz_hierarchy = "2"; break; case 0x3: psz_hierarchy = "4"; break; case 0x4: psz_hierarchy = "none+in-depth"; break; case 0x5: psz_hierarchy = "1+in-depth"; break; case 0x6: psz_hierarchy = "2+in-depth"; break; case 0x7: psz_hierarchy = "4+in-depth"; break; } switch (i_guard) { case 0x0: psz_guard = "1/32"; break; case 0x1: psz_guard = "1/16"; break; case 0x2: psz_guard = "1/8"; break; case 0x3: psz_guard = "1/4"; break; } switch (i_transmission) { case 0x0: psz_transmission = "2k"; break; case 0x1: psz_transmission = "8k"; break; case 0x2: psz_transmission = "4k"; break; } switch (i_print_type) { case PRINT_XML: pf_print(opaque, "", desc5a_get_frequency(p_desc), i_bandwidth, desc5a_get_priority(p_desc) ? "HP" : "LP", desc5a_get_timeslicing(p_desc) ? 1 : 0, desc5a_get_mpefec(p_desc) ? 1 : 0, psz_constellation, psz_hierarchy, dvb_delivery_get_fec(desc5a_get_coderatehp(p_desc)), b_hierarchy ? dvb_delivery_get_fec(desc5a_get_coderatehp(p_desc)) : "not_applicable", psz_guard, psz_transmission, desc5a_get_otherfrequency(p_desc) ? 1 : 0); break; default: pf_print(opaque, " - desc 5a dvb-t frequency=%"PRIu64" Hz bandwidth=%u MHz priority=%s%s%s constellation=%s hierarchy=%s coderatehp=%s%s%s guard=%s transmission=%s%s", desc5a_get_frequency(p_desc), i_bandwidth, desc5a_get_priority(p_desc) ? "HP" : "LP", desc5a_get_timeslicing(p_desc) ? " timeslicing" : "", desc5a_get_mpefec(p_desc) ? " mpefec" : "", psz_constellation, psz_hierarchy, dvb_delivery_get_fec(desc5a_get_coderatehp(p_desc)), b_hierarchy ? "coderatelp=" : "", b_hierarchy ? dvb_delivery_get_fec(desc5a_get_coderatehp(p_desc)) : "", psz_guard, psz_transmission, desc5a_get_otherfrequency(p_desc) ? " otherfrequency" : ""); } } #ifdef __cplusplus } #endif #endif