diff options
Diffstat (limited to 'lib/libdvbcfg/dvbcfg_zapchannel.c')
| -rw-r--r-- | lib/libdvbcfg/dvbcfg_zapchannel.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/lib/libdvbcfg/dvbcfg_zapchannel.c b/lib/libdvbcfg/dvbcfg_zapchannel.c new file mode 100644 index 0000000..2c2605e --- /dev/null +++ b/lib/libdvbcfg/dvbcfg_zapchannel.c @@ -0,0 +1,384 @@ +/* + * dvbcfg - support for linuxtv configuration files + * zap 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 <string.h> +#include <ctype.h> + +#include "dvbcfg_zapchannel.h" +#include "dvbcfg_common.h" + +static const struct dvbcfg_setting dvbcfg_inversion_list[] = { + { "INVERSION_ON", DVBFE_INVERSION_ON }, + { "INVERSION_OFF", DVBFE_INVERSION_OFF }, + { "INVERSION_AUTO", DVBFE_INVERSION_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_fec_list[] = { + { "FEC_1_2", DVBFE_FEC_1_2 }, + { "FEC_2_3", DVBFE_FEC_2_3 }, + { "FEC_3_4", DVBFE_FEC_3_4 }, + { "FEC_4_5", DVBFE_FEC_4_5 }, + { "FEC_5_6", DVBFE_FEC_5_6 }, + { "FEC_6_7", DVBFE_FEC_6_7 }, + { "FEC_7_8", DVBFE_FEC_7_8 }, + { "FEC_8_9", DVBFE_FEC_8_9 }, + { "FEC_AUTO", DVBFE_FEC_AUTO }, + { "FEC_NONE", DVBFE_FEC_NONE }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_dvbc_modulation_list[] = { + { "QAM_16", DVBFE_DVBC_MOD_QAM_16 }, + { "QAM_32", DVBFE_DVBC_MOD_QAM_32 }, + { "QAM_64", DVBFE_DVBC_MOD_QAM_64 }, + { "QAM_128", DVBFE_DVBC_MOD_QAM_128 }, + { "QAM_256", DVBFE_DVBC_MOD_QAM_256 }, + { "QAM_AUTO", DVBFE_DVBC_MOD_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_bandwidth_list[] = { + { "BANDWIDTH_6_MHZ", DVBFE_DVBT_BANDWIDTH_6_MHZ }, + { "BANDWIDTH_7_MHZ", DVBFE_DVBT_BANDWIDTH_7_MHZ }, + { "BANDWIDTH_8_MHZ", DVBFE_DVBT_BANDWIDTH_8_MHZ }, + { "BANDWIDTH_AUTO", DVBFE_DVBT_BANDWIDTH_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_constellation_list[] = { + { "QAM_16", DVBFE_DVBT_CONST_QAM_16 }, + { "QAM_32", DVBFE_DVBT_CONST_QAM_32 }, + { "QAM_64", DVBFE_DVBT_CONST_QAM_64 }, + { "QAM_128", DVBFE_DVBT_CONST_QAM_128 }, + { "QAM_256", DVBFE_DVBT_CONST_QAM_256 }, + { "QPSK", DVBFE_DVBT_CONST_QPSK }, + { "QAM_AUTO", DVBFE_DVBT_CONST_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_transmission_mode_list[] = { + { "TRANSMISSION_MODE_2K", DVBFE_DVBT_TRANSMISSION_MODE_2K }, + { "TRANSMISSION_MODE_8K", DVBFE_DVBT_TRANSMISSION_MODE_8K }, + { "TRANSMISSION_MODE_AUTO", DVBFE_DVBT_TRANSMISSION_MODE_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_guard_interval_list[] = { + { "GUARD_INTERVAL_1_32", DVBFE_DVBT_GUARD_INTERVAL_1_32 }, + { "GUARD_INTERVAL_1_16", DVBFE_DVBT_GUARD_INTERVAL_1_16 }, + { "GUARD_INTERVAL_1_8", DVBFE_DVBT_GUARD_INTERVAL_1_8 }, + { "GUARD_INTERVAL_1_4", DVBFE_DVBT_GUARD_INTERVAL_1_4 }, + { "GUARD_INTERVAL_AUTO", DVBFE_DVBT_GUARD_INTERVAL_AUTO }, + { NULL, 0 } +}; + +static const struct dvbcfg_setting dvbcfg_hierarchy_list[] = { + { "HIERARCHY_1", DVBFE_DVBT_HIERARCHY_1 }, + { "HIERARCHY_2", DVBFE_DVBT_HIERARCHY_2 }, + { "HIERARCHY_4", DVBFE_DVBT_HIERARCHY_4 }, + { "HIERARCHY_AUTO", DVBFE_DVBT_HIERARCHY_AUTO }, + { "HIERARCHY_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 }, + { "QAM_64", DVBFE_ATSC_MOD_QAM_64 }, + { "QAM_256", DVBFE_ATSC_MOD_QAM_256 }, + { NULL, 0 } +}; + +int dvbcfg_zapchannel_parse(FILE *file, dvbcfg_zapcallback 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_zapchannel tmp; + + /* remove newline and comments (started with hashes) */ + while ((*line_tmp != '\0') && (*line_tmp != '\n') && (*line_tmp != '#')) + line_tmp++; + *line_tmp = '\0'; + + /* parse name */ + dvbcfg_parse_string(&line_pos, ":", tmp.name, sizeof(tmp.name)); + if (!line_pos) + continue; + + /* parse frequency */ + tmp.fe_params.frequency = dvbcfg_parse_int(&line_pos, ":"); + if (!line_pos) + continue; + + /* try to determine frontend type */ + if (strstr(line_pos, ":FEC_")) { + if (strstr(line_pos, ":HIERARCHY_")) + tmp.fe_type = DVBFE_TYPE_DVBT; + else + tmp.fe_type = DVBFE_TYPE_DVBC; + } else { + if (strstr(line_pos, "VSB:") || strstr(line_pos, "QAM_")) + tmp.fe_type = DVBFE_TYPE_ATSC; + else + tmp.fe_type = DVBFE_TYPE_DVBS; + } + + /* parse frontend specific settings */ + switch (tmp.fe_type) { + case DVBFE_TYPE_ATSC: + /* inversion */ + tmp.fe_params.inversion = DVBFE_INVERSION_AUTO; + + /* 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: + /* inversion */ + tmp.fe_params.inversion = + dvbcfg_parse_setting(&line_pos, ":", dvbcfg_inversion_list); + 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: + /* adjust frequency */ + tmp.fe_params.frequency *= 1000; + + /* inversion */ + tmp.fe_params.inversion = DVBFE_INVERSION_AUTO; + + /* fec */ + tmp.fe_params.u.dvbs.fec_inner = DVBFE_FEC_AUTO; + + /* 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; + + /* satellite switch position */ + tmp.diseqc_switch = dvbcfg_parse_int(&line_pos, ":"); + if (!line_pos) + continue; + + /* symbol rate */ + tmp.fe_params.u.dvbs.symbol_rate = + dvbcfg_parse_int(&line_pos, ":") * 1000; + if (!line_pos) + continue; + + break; + + case DVBFE_TYPE_DVBT: + /* inversion */ + tmp.fe_params.inversion = + dvbcfg_parse_setting(&line_pos, ":", dvbcfg_inversion_list); + 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; + } + + /* parse video and audio pids and service id */ + tmp.video_pid = dvbcfg_parse_int(&line_pos, ":"); + if (!line_pos) + continue; + tmp.audio_pid = dvbcfg_parse_int(&line_pos, ":"); + if (!line_pos) + continue; + tmp.service_id = dvbcfg_parse_int(&line_pos, ":"); + if (!line_pos) /* old files don't have a service id */ + tmp.service_id = 0; + + /* 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; +} + +int dvbcfg_zapchannel_save(FILE *file, dvbcfg_zapcallback callback, void *private_data) +{ + int ret_val = 0; + struct dvbcfg_zapchannel tmp; + + while ((ret_val = callback(&tmp, private_data)) == 0) { + /* name */ + if ((ret_val = fprintf(file, "%s:", tmp.name)) < 0) + return ret_val; + + /* frontend specific settings */ + switch (tmp.fe_type) { + case DVBFE_TYPE_ATSC: + if ((ret_val = fprintf(file, "%i:%s:", + tmp.fe_params.frequency, + dvbcfg_lookup_setting(tmp.fe_params.u.atsc.modulation, + dvbcfg_atsc_modulation_list))) < 0) + return ret_val; + + break; + + case DVBFE_TYPE_DVBC: + if ((ret_val = fprintf(file, "%i:%s:%i:%s:%s:", + tmp.fe_params.frequency, + dvbcfg_lookup_setting(tmp.fe_params.inversion, + dvbcfg_inversion_list), + tmp.fe_params.u.dvbc.symbol_rate, + dvbcfg_lookup_setting(tmp.fe_params.u.dvbc.fec_inner, + dvbcfg_fec_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbc.modulation, + dvbcfg_dvbc_modulation_list))) < 0) + return ret_val; + + break; + + case DVBFE_TYPE_DVBS: + if ((ret_val = fprintf(file, "%i:%c:%i:%i:", + tmp.fe_params.frequency / 1000, + tolower(tmp.polarization), + tmp.diseqc_switch, + tmp.fe_params.u.dvbs.symbol_rate / 1000)) < 0) + return ret_val; + + break; + case DVBFE_TYPE_DVBT: + if ((ret_val = fprintf(file, "%i:%s:%s:%s:%s:%s:%s:%s:%s:", + tmp.fe_params.frequency, + dvbcfg_lookup_setting(tmp.fe_params.inversion, + dvbcfg_inversion_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.bandwidth, + dvbcfg_bandwidth_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.code_rate_HP, + dvbcfg_fec_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.code_rate_LP, + dvbcfg_fec_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.constellation, + dvbcfg_constellation_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.transmission_mode, + dvbcfg_transmission_mode_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.guard_interval, + dvbcfg_guard_interval_list), + dvbcfg_lookup_setting(tmp.fe_params.u.dvbt.hierarchy_information, + dvbcfg_hierarchy_list))) < 0) + return ret_val; + + break; + } + + /* video and audio pids and service id */ + if ((ret_val = fprintf(file, "%i:%i:%i\n", + tmp.video_pid, tmp.audio_pid, tmp.service_id)) < 0) + return ret_val; + + } + + if (ret_val < 0) + ret_val = 0; + + return ret_val; +} |