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187 lines
6.5 KiB
187 lines
6.5 KiB
/*****************************************************************************
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* desc_43.h: ETSI EN 300 468 Descriptor 0x43: Satellite delivery system
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*****************************************************************************
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* Copyright (C) 2009-2010 VideoLAN
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
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*/
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#ifndef __BITSTREAM_DVB_DESC_43_H__
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#define __BITSTREAM_DVB_DESC_43_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#include <bitstream/dvb/si/numbers.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x43: Satellite delivery system descriptor
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*****************************************************************************/
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#define DESC43_HEADER_SIZE (DESC_HEADER_SIZE + 11)
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static inline uint32_t desc43_get_frequency(const uint8_t *p_desc)
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{
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return dvb_bcd_get(p_desc + 2, 32) * 10; /* kHz */
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}
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static inline unsigned int desc43_get_position(const uint8_t *p_desc)
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{
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return dvb_bcd_get(p_desc + 6, 16); /* 10th degree */
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}
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static inline bool desc43_get_east(const uint8_t *p_desc)
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{
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return !!(p_desc[8] & 0x80);
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}
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static inline uint8_t desc43_get_polarization(const uint8_t *p_desc)
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{
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return (p_desc[8] & 0x60) >> 5;
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}
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static inline uint8_t desc43_get_rolloff(const uint8_t *p_desc)
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{
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return (p_desc[8] & 0x18) >> 3;
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}
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static inline bool desc43_get_dvbs2(const uint8_t *p_desc)
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{
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return !!(p_desc[8] & 0x4);
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}
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static inline bool desc43_get_modulation(const uint8_t *p_desc)
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{
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return p_desc[8] & 0x3;
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}
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static inline unsigned int desc43_get_symbolrate(const uint8_t *p_desc)
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{
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return dvb_bcd_get(p_desc + 9, 28) * 100; /* sy/s */
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}
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static inline uint8_t desc43_get_fecinner(const uint8_t *p_desc)
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{
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return p_desc[12] & 0xf;
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}
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static inline const char *dvb_delivery_get_fec(uint8_t i_fec)
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{
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switch (i_fec) {
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case 0x0: return "undefined";
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case 0x1: return "1/2";
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case 0x2: return "2/3";
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case 0x3: return "3/4";
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case 0x4: return "5/6";
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case 0x5: return "7/8";
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case 0x6: return "8/9";
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case 0x7: return "3/5";
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case 0x8: return "4/5";
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case 0x9: return "9/10";
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case 0xf: return "none";
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default: return "reserved";
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}
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}
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static inline bool desc43_validate(const uint8_t *p_desc)
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{
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return desc_get_length(p_desc) >= DESC43_HEADER_SIZE - DESC_HEADER_SIZE;
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}
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static inline void desc43_print(const uint8_t *p_desc, f_print pf_print,
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void *opaque, print_type_t i_print_type)
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{
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unsigned int i_pos = desc43_get_position(p_desc);
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uint8_t i_polarization = desc43_get_polarization(p_desc);
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const char *psz_polarization = "";;
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uint8_t i_rolloff = desc43_get_rolloff(p_desc);
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uint8_t i_modulation = desc43_get_modulation(p_desc);
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const char *psz_modulation = "";
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switch (i_polarization) {
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case 0x0: psz_polarization = "H"; break;
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case 0x1: psz_polarization = "V"; break;
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case 0x2: psz_polarization = "L"; break;
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case 0x3: psz_polarization = "R"; break;
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}
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switch (i_rolloff) {
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case 0x0: i_rolloff = 35; break;
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case 0x1: i_rolloff = 25; break;
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case 0x2: i_rolloff = 20; break;
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}
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switch (i_modulation) {
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case 0x0: psz_modulation = "auto"; break;
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case 0x1: psz_modulation = "qpsk"; break;
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case 0x2: psz_modulation = "8psk"; break;
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case 0x3: psz_modulation = "16-qam"; break;
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}
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switch (i_print_type) {
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case PRINT_XML:
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if (desc43_get_dvbs2(p_desc))
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pf_print(opaque,
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"<SATELLITE_DESC s2=\"1\" frequency=\"%u%s\" pos=\"%u.%u%c\" rolloff=\"0.%hhu\" modulation=\"%s\" symbolrate=\"%u\" fecinner=\"%s\"/>",
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desc43_get_frequency(p_desc), psz_polarization,
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i_pos / 10, i_pos % 10, desc43_get_east(p_desc) ? 'E' : 'W',
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i_rolloff, psz_modulation, desc43_get_symbolrate(p_desc),
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dvb_delivery_get_fec(desc43_get_fecinner(p_desc)));
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else
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pf_print(opaque,
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"<SATELLITE_DESC s2=\"0\" frequency=\"%u%s\" pos=\"%u.%u%c\" modulation=\"%s\" symbolrate=\"%u\" fecinner=\"%s\"/>",
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desc43_get_frequency(p_desc), psz_polarization,
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i_pos / 10, i_pos % 10, desc43_get_east(p_desc) ? 'E' : 'W',
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psz_modulation, desc43_get_symbolrate(p_desc),
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dvb_delivery_get_fec(desc43_get_fecinner(p_desc)));
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break;
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default:
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if (desc43_get_dvbs2(p_desc))
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pf_print(opaque,
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" - desc 43 dvb-s2 frequency=%u%s pos=%u.%u%c rolloff=0.%hhu modulation=%s symbolrate=%u fecinner=%s",
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desc43_get_frequency(p_desc), psz_polarization,
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i_pos / 10, i_pos % 10, desc43_get_east(p_desc) ? 'E' : 'W',
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i_rolloff, psz_modulation, desc43_get_symbolrate(p_desc),
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dvb_delivery_get_fec(desc43_get_fecinner(p_desc)));
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else
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pf_print(opaque,
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" - desc 43 dvb-s frequency=%u%s pos=%u.%u%c modulation=%s symbolrate=%u fecinner=%s",
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desc43_get_frequency(p_desc), psz_polarization,
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i_pos / 10, i_pos % 10, desc43_get_east(p_desc) ? 'E' : 'W',
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psz_modulation, desc43_get_symbolrate(p_desc),
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dvb_delivery_get_fec(desc43_get_fecinner(p_desc)));
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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