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Diffstat (limited to '')
| -rw-r--r-- | lib/libdvbcfg/dvbcfg_scanfile.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/lib/libdvbcfg/dvbcfg_scanfile.c b/lib/libdvbcfg/dvbcfg_scanfile.c new file mode 100644 index 0000000..ec305a4 --- /dev/null +++ b/lib/libdvbcfg/dvbcfg_scanfile.c @@ -0,0 +1,282 @@ +/* + * dvbcfg - support for linuxtv configuration files + * scan channel file support + * + * Copyright (C) 2006 Christoph Pfister <christophpfister@gmail.com> + * 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 + */ + +#define _GNU_SOURCE + +#include <malloc.h> +#include <ctype.h> + +#include "dvbcfg_scanfile.h" +#include "dvbcfg_common.h" + +static const struct dvbcfg_setting dvbcfg_fec_list[] = { + { "1/2", DVBFE_FEC_1_2 }, + { "2/3", DVBFE_FEC_2_3 }, + { "3/4", DVBFE_FEC_3_4 }, + { "4/5", DVBFE_FEC_4_5 }, + { "5/6", DVBFE_FEC_5_6 }, + { "6/7", DVBFE_FEC_6_7 }, + { "7/8", DVBFE_FEC_7_8 }, + { "8/9", DVBFE_FEC_8_9 }, + { "AUTO", DVBFE_FEC_AUTO }, + { "NONE", DVBFE_FEC_NONE }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_dvbc_modulation_list[] = { + { "QAM16", DVBFE_DVBC_MOD_QAM_16 }, + { "QAM32", DVBFE_DVBC_MOD_QAM_32 }, + { "QAM64", DVBFE_DVBC_MOD_QAM_64 }, + { "QAM128", DVBFE_DVBC_MOD_QAM_128 }, + { "QAM256", DVBFE_DVBC_MOD_QAM_256 }, + { "AUTO", DVBFE_DVBC_MOD_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_bandwidth_list[] = { + { "6MHz", DVBFE_DVBT_BANDWIDTH_6_MHZ }, + { "7MHz", DVBFE_DVBT_BANDWIDTH_7_MHZ }, + { "8MHz", DVBFE_DVBT_BANDWIDTH_8_MHZ }, + { "AUTO", DVBFE_DVBT_BANDWIDTH_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_constellation_list[] = { + { "QAM16", DVBFE_DVBT_CONST_QAM_16 }, + { "QAM32", DVBFE_DVBT_CONST_QAM_32 }, + { "QAM64", DVBFE_DVBT_CONST_QAM_64 }, + { "QAM128", DVBFE_DVBT_CONST_QAM_128 }, + { "QAM256", DVBFE_DVBT_CONST_QAM_256 }, + { "QPSK", DVBFE_DVBT_CONST_QPSK }, + { "AUTO", DVBFE_DVBT_CONST_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_transmission_mode_list[] = { + { "2k", DVBFE_DVBT_TRANSMISSION_MODE_2K }, + { "8k", DVBFE_DVBT_TRANSMISSION_MODE_8K }, + { "AUTO", DVBFE_DVBT_TRANSMISSION_MODE_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_guard_interval_list[] = { + { "1/32", DVBFE_DVBT_GUARD_INTERVAL_1_32 }, + { "1/16", DVBFE_DVBT_GUARD_INTERVAL_1_16 }, + { "1/8", DVBFE_DVBT_GUARD_INTERVAL_1_8 }, + { "1/4", DVBFE_DVBT_GUARD_INTERVAL_1_4 }, + { "AUTO", DVBFE_DVBT_GUARD_INTERVAL_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_hierarchy_list[] = { + { "1", DVBFE_DVBT_HIERARCHY_1 }, + { "2", DVBFE_DVBT_HIERARCHY_2 }, + { "4", DVBFE_DVBT_HIERARCHY_4 }, + { "AUTO", DVBFE_DVBT_HIERARCHY_AUTO }, + { "NONE", DVBFE_DVBT_HIERARCHY_NONE }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_atsc_modulation_list[] = { + { "8VSB", DVBFE_ATSC_MOD_VSB_8 }, + { "16VSB", DVBFE_ATSC_MOD_VSB_16 }, + { "QAM64", DVBFE_ATSC_MOD_QAM_64 }, + { "QAM256", DVBFE_ATSC_MOD_QAM_256 }, + { NULL, 0 } +}; + +int dvbcfg_scanfile_parse(FILE *file, dvbcfg_scancallback callback, void *private_data) +{ + char *line_buf = NULL; + size_t line_size = 0; + int line_len = 0; + int ret_val = 0; + + while ((line_len = getline(&line_buf, &line_size, file)) > 0) { + char *line_tmp = line_buf; + char *line_pos = line_buf; + struct dvbcfg_scanfile tmp; + + /* remove newline and comments (started with hashes) */ + while ((*line_tmp != '\0') && (*line_tmp != '\n') && (*line_tmp != '#')) + line_tmp++; + *line_tmp = '\0'; + + /* always use inversion auto */ + tmp.fe_params.inversion = DVBFE_INVERSION_AUTO; + + /* parse frontend type */ + switch(dvbcfg_parse_char(&line_pos, " ")) { + case 'T': + tmp.fe_type = DVBFE_TYPE_DVBT; + break; + case 'C': + tmp.fe_type = DVBFE_TYPE_DVBC; + break; + case 'S': + tmp.fe_type = DVBFE_TYPE_DVBS; + break; + case 'A': + tmp.fe_type = DVBFE_TYPE_ATSC; + break; + default: + continue; + } + + /* parse frontend specific settings */ + switch (tmp.fe_type) { + case DVBFE_TYPE_ATSC: + + /* parse frequency */ + tmp.fe_params.frequency = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* modulation */ + tmp.fe_params.u.atsc.modulation = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_atsc_modulation_list); + if (!line_pos) + continue; + + break; + + case DVBFE_TYPE_DVBC: + + /* parse frequency */ + tmp.fe_params.frequency = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* symbol rate */ + tmp.fe_params.u.dvbc.symbol_rate = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* fec */ + tmp.fe_params.u.dvbc.fec_inner = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_fec_list); + if (!line_pos) + continue; + + /* modulation */ + tmp.fe_params.u.dvbc.modulation = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_dvbc_modulation_list); + if (!line_pos) + continue; + + break; + + case DVBFE_TYPE_DVBS: + + /* parse frequency */ + tmp.fe_params.frequency = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* polarization */ + tmp.polarization = tolower(dvbcfg_parse_char(&line_pos, " ")); + if (!line_pos) + continue; + if ((tmp.polarization != 'h') && + (tmp.polarization != 'v') && + (tmp.polarization != 'l') && + (tmp.polarization != 'r')) + continue; + + /* symbol rate */ + tmp.fe_params.u.dvbs.symbol_rate = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* fec */ + tmp.fe_params.u.dvbc.fec_inner = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_fec_list); + if (!line_pos) + continue; + + break; + + case DVBFE_TYPE_DVBT: + + /* parse frequency */ + tmp.fe_params.frequency = dvbcfg_parse_int(&line_pos, " "); + if (!line_pos) + continue; + + /* bandwidth */ + tmp.fe_params.u.dvbt.bandwidth = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_bandwidth_list); + if (!line_pos) + continue; + + /* fec hp */ + tmp.fe_params.u.dvbt.code_rate_HP = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_fec_list); + if (!line_pos) + continue; + + /* fec lp */ + tmp.fe_params.u.dvbt.code_rate_LP = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_fec_list); + if (!line_pos) + continue; + + /* constellation */ + tmp.fe_params.u.dvbt.constellation = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_constellation_list); + if (!line_pos) + continue; + + /* transmission mode */ + tmp.fe_params.u.dvbt.transmission_mode = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_transmission_mode_list); + if (!line_pos) + continue; + + /* guard interval */ + tmp.fe_params.u.dvbt.guard_interval = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_guard_interval_list); + if (!line_pos) + continue; + + /* hierarchy */ + tmp.fe_params.u.dvbt.hierarchy_information = + dvbcfg_parse_setting(&line_pos, " ", dvbcfg_hierarchy_list); + if (!line_pos) + continue; + + break; + } + + /* invoke callback */ + if ((ret_val = callback(&tmp, private_data)) != 0) { + if (ret_val < 0) + ret_val = 0; + break; + } + } + + if (line_buf) + free(line_buf); + + return ret_val; +} |