diff options
Diffstat (limited to 'lib/libdvbapi/dvbfe.c')
| -rw-r--r-- | lib/libdvbapi/dvbfe.c | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/lib/libdvbapi/dvbfe.c b/lib/libdvbapi/dvbfe.c new file mode 100644 index 0000000..98104c9 --- /dev/null +++ b/lib/libdvbapi/dvbfe.c @@ -0,0 +1,574 @@ +/* + * libdvbfe - a DVB frontend library + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2005 Manu Abraham <abraham.manu@gmail.com> + * 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 + */ + +#define _GNU_SOURCE +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <sys/param.h> +#include <sys/ioctl.h> +#include <sys/time.h> +#include <sys/poll.h> +#include <fcntl.h> +#include <unistd.h> +#include <ctype.h> +#include <errno.h> +#include <linux/dvb/frontend.h> +#include <libdvbmisc/dvbmisc.h> +#include "dvbfe.h" + +int verbose = 0; + +static int dvbfe_spectral_inversion_to_kapi[][2] = +{ + { DVBFE_INVERSION_OFF, INVERSION_OFF }, + { DVBFE_INVERSION_ON, INVERSION_ON }, + { DVBFE_INVERSION_AUTO, INVERSION_AUTO }, + { -1, -1 } +}; + +static int dvbfe_code_rate_to_kapi[][2] = +{ + { DVBFE_FEC_NONE, FEC_NONE }, + { DVBFE_FEC_1_2, FEC_1_2 }, + { DVBFE_FEC_2_3, FEC_2_3 }, + { DVBFE_FEC_3_4, FEC_3_4 }, + { DVBFE_FEC_4_5, FEC_4_5 }, + { DVBFE_FEC_5_6, FEC_5_6 }, + { DVBFE_FEC_6_7, FEC_6_7 }, + { DVBFE_FEC_7_8, FEC_7_8 }, + { DVBFE_FEC_8_9, FEC_8_9 }, + { DVBFE_FEC_AUTO, FEC_AUTO }, + { -1, -1 } +}; + +static int dvbfe_dvbt_const_to_kapi[][2] = +{ + { DVBFE_DVBT_CONST_QPSK, FE_QPSK }, + { DVBFE_DVBT_CONST_QAM_16, QAM_16 }, + { DVBFE_DVBT_CONST_QAM_32, QAM_32 }, + { DVBFE_DVBT_CONST_QAM_64, QAM_64 }, + { DVBFE_DVBT_CONST_QAM_128, QAM_128 }, + { DVBFE_DVBT_CONST_QAM_256, QAM_256 }, + { DVBFE_DVBT_CONST_AUTO, QAM_AUTO }, + { -1, -1 } +}; + +static int dvbfe_dvbc_mod_to_kapi[][2] = +{ + { DVBFE_DVBC_MOD_QAM_16, QAM_16 }, + { DVBFE_DVBC_MOD_QAM_32, QAM_32 }, + { DVBFE_DVBC_MOD_QAM_64, QAM_64 }, + { DVBFE_DVBC_MOD_QAM_128, QAM_128 }, + { DVBFE_DVBC_MOD_QAM_256, QAM_256 }, + { DVBFE_DVBC_MOD_AUTO, QAM_AUTO }, + { -1, -1 } +}; + +static int dvbfe_atsc_mod_to_kapi[][2] = +{ + { DVBFE_ATSC_MOD_QAM_64, QAM_64 }, + { DVBFE_ATSC_MOD_QAM_256, QAM_256 }, + { DVBFE_ATSC_MOD_VSB_8, VSB_8 }, + { DVBFE_ATSC_MOD_VSB_16, VSB_16 }, + { DVBFE_ATSC_MOD_AUTO, QAM_AUTO }, + { -1, -1 } +}; + +static int dvbfe_dvbt_transmit_mode_to_kapi[][2] = +{ + { DVBFE_DVBT_TRANSMISSION_MODE_2K, TRANSMISSION_MODE_2K }, + { DVBFE_DVBT_TRANSMISSION_MODE_8K, TRANSMISSION_MODE_8K }, + { DVBFE_DVBT_TRANSMISSION_MODE_AUTO, TRANSMISSION_MODE_AUTO }, + { -1, -1 } +}; + +static int dvbfe_dvbt_bandwidth_to_kapi[][2] = +{ + { DVBFE_DVBT_BANDWIDTH_8_MHZ, BANDWIDTH_8_MHZ }, + { DVBFE_DVBT_BANDWIDTH_7_MHZ, BANDWIDTH_7_MHZ }, + { DVBFE_DVBT_BANDWIDTH_6_MHZ, BANDWIDTH_6_MHZ }, + { DVBFE_DVBT_BANDWIDTH_AUTO, BANDWIDTH_AUTO }, + { -1, -1 } +}; + +static int dvbfe_dvbt_guard_interval_to_kapi[][2] = +{ + { DVBFE_DVBT_GUARD_INTERVAL_1_32, GUARD_INTERVAL_1_32}, + { DVBFE_DVBT_GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_16}, + { DVBFE_DVBT_GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_8}, + { DVBFE_DVBT_GUARD_INTERVAL_1_4, GUARD_INTERVAL_1_4}, + { DVBFE_DVBT_GUARD_INTERVAL_AUTO, GUARD_INTERVAL_AUTO}, + { -1, -1 } +}; + +static int dvbfe_dvbt_hierarchy_to_kapi[][2] = +{ + { DVBFE_DVBT_HIERARCHY_NONE, HIERARCHY_NONE }, + { DVBFE_DVBT_HIERARCHY_1, HIERARCHY_1 }, + { DVBFE_DVBT_HIERARCHY_2, HIERARCHY_2 }, + { DVBFE_DVBT_HIERARCHY_4, HIERARCHY_4 }, + { DVBFE_DVBT_HIERARCHY_AUTO, HIERARCHY_AUTO }, + { -1, -1 } +}; + + +static int lookupval(int val, int reverse, int table[][2]) +{ + int i =0; + + while(table[i][0] != -1) { + if (!reverse) { + if (val == table[i][0]) { + return table[i][1]; + } + } else { + if (val == table[i][1]) { + return table[i][0]; + } + } + i++; + } + + return -1; +} + + +struct dvbfe_handle { + int fd; + enum dvbfe_type type; + char *name; +}; + +struct dvbfe_handle *dvbfe_open(int adapter, int frontend, int readonly) +{ + char filename[PATH_MAX+1]; + struct dvbfe_handle *fehandle; + int fd; + struct dvb_frontend_info info; + + // flags + int flags = O_RDWR; + if (readonly) { + flags = O_RDONLY; + } + + // open it (try normal /dev structure first) + sprintf(filename, "/dev/dvb/adapter%i/frontend%i", adapter, frontend); + if ((fd = open(filename, flags)) < 0) { + // if that failed, try a flat /dev structure + sprintf(filename, "/dev/dvb%i.frontend%i", adapter, frontend); + if ((fd = open(filename, flags)) < 0) { + return NULL; + } + } + + // determine fe type + if (ioctl(fd, FE_GET_INFO, &info)) { + close(fd); + return NULL; + } + + // setup structure + fehandle = (struct dvbfe_handle*) malloc(sizeof(struct dvbfe_handle)); + memset(fehandle, 0, sizeof(struct dvbfe_handle)); + fehandle->fd = fd; + switch(info.type) { + case FE_QPSK: + fehandle->type = DVBFE_TYPE_DVBS; + break; + + case FE_QAM: + fehandle->type = DVBFE_TYPE_DVBC; + break; + + case FE_OFDM: + fehandle->type = DVBFE_TYPE_DVBT; + break; + + case FE_ATSC: + fehandle->type = DVBFE_TYPE_ATSC; + break; + } + fehandle->name = strndup(info.name, sizeof(info.name)); + + // done + return fehandle; +} + +void dvbfe_close(struct dvbfe_handle *fehandle) +{ + close(fehandle->fd); + free(fehandle->name); + free(fehandle); +} + +extern int dvbfe_get_info(struct dvbfe_handle *fehandle, + enum dvbfe_info_mask querymask, + struct dvbfe_info *result, + enum dvbfe_info_querytype querytype, + int timeout) +{ + int returnval = 0; + struct dvb_frontend_event kevent; + int ok = 0; + + result->name = fehandle->name; + result->type = fehandle->type; + + switch(querytype) { + case DVBFE_INFO_QUERYTYPE_IMMEDIATE: + if (querymask & DVBFE_INFO_LOCKSTATUS) { + if (!ioctl(fehandle->fd, FE_READ_STATUS, &kevent.status)) { + returnval |= DVBFE_INFO_LOCKSTATUS; + } + } + if (querymask & DVBFE_INFO_FEPARAMS) { + if (!ioctl(fehandle->fd, FE_GET_FRONTEND, &kevent.parameters)) { + returnval |= DVBFE_INFO_FEPARAMS; + } + } + break; + + case DVBFE_INFO_QUERYTYPE_LOCKCHANGE: + { + struct pollfd pollfd; + pollfd.fd = fehandle->fd; + pollfd.events = POLLIN | POLLERR; + + ok = 1; + if (poll(&pollfd, 1, timeout) < 0) + ok = 0; + if (pollfd.revents & POLLERR) + ok = 0; + if (!(pollfd.revents & POLLIN)) + ok = 0; + } + + if (ok && + ((querymask & DVBFE_INFO_LOCKSTATUS) || + (querymask & DVBFE_INFO_FEPARAMS))) { + if (!ioctl(fehandle->fd, FE_GET_EVENT, &kevent)) { + if (querymask & DVBFE_INFO_LOCKSTATUS) + returnval |= DVBFE_INFO_LOCKSTATUS; + if (querymask & DVBFE_INFO_FEPARAMS) + returnval |= DVBFE_INFO_FEPARAMS; + } + } + break; + } + + if (returnval & DVBFE_INFO_LOCKSTATUS) { + result->signal = kevent.status & FE_HAS_SIGNAL ? 1 : 0; + result->carrier = kevent.status & FE_HAS_CARRIER ? 1 : 0; + result->viterbi = kevent.status & FE_HAS_VITERBI ? 1 : 0; + result->sync = kevent.status & FE_HAS_SYNC ? 1 : 0; + result->lock = kevent.status & FE_HAS_LOCK ? 1 : 0; + } + + if (returnval & DVBFE_INFO_FEPARAMS) { + result->feparams.frequency = kevent.parameters.frequency; + result->feparams.inversion = lookupval(kevent.parameters.inversion, 1, dvbfe_spectral_inversion_to_kapi); + switch(fehandle->type) { + case FE_QPSK: + result->feparams.u.dvbs.symbol_rate = kevent.parameters.u.qpsk.symbol_rate; + result->feparams.u.dvbs.fec_inner = + lookupval(kevent.parameters.u.qpsk.fec_inner, 1, dvbfe_code_rate_to_kapi); + break; + + case FE_QAM: + result->feparams.u.dvbc.symbol_rate = kevent.parameters.u.qam.symbol_rate; + result->feparams.u.dvbc.fec_inner = + lookupval(kevent.parameters.u.qam.fec_inner, 1, dvbfe_code_rate_to_kapi); + result->feparams.u.dvbc.modulation = + lookupval(kevent.parameters.u.qam.modulation, 1, dvbfe_dvbc_mod_to_kapi); + break; + + case FE_OFDM: + result->feparams.u.dvbt.bandwidth = + lookupval(kevent.parameters.u.ofdm.bandwidth, 1, dvbfe_dvbt_bandwidth_to_kapi); + result->feparams.u.dvbt.code_rate_HP = + lookupval(kevent.parameters.u.ofdm.code_rate_HP, 1, dvbfe_code_rate_to_kapi); + result->feparams.u.dvbt.code_rate_LP = + lookupval(kevent.parameters.u.ofdm.code_rate_LP, 1, dvbfe_code_rate_to_kapi); + result->feparams.u.dvbt.constellation = + lookupval(kevent.parameters.u.ofdm.constellation, 1, dvbfe_dvbt_const_to_kapi); + result->feparams.u.dvbt.transmission_mode = + lookupval(kevent.parameters.u.ofdm.transmission_mode, 1, dvbfe_dvbt_transmit_mode_to_kapi); + result->feparams.u.dvbt.guard_interval = + lookupval(kevent.parameters.u.ofdm.guard_interval, 1, dvbfe_dvbt_guard_interval_to_kapi); + result->feparams.u.dvbt.hierarchy_information = + lookupval(kevent.parameters.u.ofdm.hierarchy_information, 1, dvbfe_dvbt_hierarchy_to_kapi); + break; + + case FE_ATSC: + result->feparams.u.atsc.modulation = + lookupval(kevent.parameters.u.vsb.modulation, 1, dvbfe_atsc_mod_to_kapi); + break; + } + } + + if (querymask & DVBFE_INFO_BER) { + if (!ioctl(fehandle->fd, FE_READ_BER, &result->ber)) + returnval |= DVBFE_INFO_BER; + } + if (querymask & DVBFE_INFO_SIGNAL_STRENGTH) { + if (!ioctl(fehandle->fd, FE_READ_SIGNAL_STRENGTH, &result->signal_strength)) + returnval |= DVBFE_INFO_SIGNAL_STRENGTH; + } + if (querymask & DVBFE_INFO_SNR) { + if (!ioctl(fehandle->fd, FE_READ_SNR, &result->snr)) + returnval |= DVBFE_INFO_SNR; + } + if (querymask & DVBFE_INFO_UNCORRECTED_BLOCKS) { + if (!ioctl(fehandle->fd, FE_READ_UNCORRECTED_BLOCKS, &result->ucblocks)) + returnval |= DVBFE_INFO_UNCORRECTED_BLOCKS; + } + + // done + return returnval; +} + +int dvbfe_set(struct dvbfe_handle *fehandle, + struct dvbfe_parameters *params, + int timeout) +{ + struct dvb_frontend_parameters kparams; + int res; + struct timeval endtime; + fe_status_t status; + + kparams.frequency = params->frequency; + kparams.inversion = lookupval(params->inversion, 0, dvbfe_spectral_inversion_to_kapi); + switch(fehandle->type) { + case FE_QPSK: + kparams.u.qpsk.symbol_rate = params->u.dvbs.symbol_rate; + kparams.u.qpsk.fec_inner = lookupval(params->u.dvbs.fec_inner, 0, dvbfe_code_rate_to_kapi); + break; + + case FE_QAM: + kparams.u.qam.symbol_rate = params->u.dvbc.symbol_rate; + kparams.u.qam.fec_inner = lookupval(params->u.dvbc.fec_inner, 0, dvbfe_code_rate_to_kapi); + kparams.u.qam.modulation = lookupval(params->u.dvbc.modulation, 0, dvbfe_dvbc_mod_to_kapi); + break; + + case FE_OFDM: + kparams.u.ofdm.bandwidth = lookupval(params->u.dvbt.bandwidth, 0, dvbfe_dvbt_bandwidth_to_kapi); + kparams.u.ofdm.code_rate_HP = lookupval(params->u.dvbt.code_rate_HP, 0, dvbfe_code_rate_to_kapi); + kparams.u.ofdm.code_rate_LP = lookupval(params->u.dvbt.code_rate_LP, 0, dvbfe_code_rate_to_kapi); + kparams.u.ofdm.constellation = lookupval(params->u.dvbt.constellation, 0, dvbfe_dvbt_const_to_kapi); + kparams.u.ofdm.transmission_mode = + lookupval(params->u.dvbt.transmission_mode, 0, dvbfe_dvbt_transmit_mode_to_kapi); + kparams.u.ofdm.guard_interval = + lookupval(params->u.dvbt.guard_interval, 0, dvbfe_dvbt_guard_interval_to_kapi); + kparams.u.ofdm.hierarchy_information = + lookupval(params->u.dvbt.hierarchy_information, 0, dvbfe_dvbt_hierarchy_to_kapi); + break; + + case FE_ATSC: + kparams.u.vsb.modulation = lookupval(params->u.atsc.modulation, 0, dvbfe_atsc_mod_to_kapi); + break; + + default: + return -EINVAL; + } + + // set it and check for error + res = ioctl(fehandle->fd, FE_SET_FRONTEND, &kparams); + if (res) + return res; + + // 0 => return immediately + if (timeout == 0) { + return 0; + } + + /* calculate timeout */ + if (timeout > 0) { + gettimeofday(&endtime, NULL); + timeout *= 1000; + endtime.tv_sec += timeout / 1000000; + endtime.tv_usec += timeout % 1000000; + } + + /* wait for a lock */ + while(1) { + /* has it locked? */ + if (!ioctl(fehandle->fd, FE_READ_STATUS, &status)) { + if (status & FE_HAS_LOCK) { + break; + } + } + + /* check for timeout */ + if (timeout > 0) { + struct timeval curtime; + gettimeofday(&curtime, NULL); + if ((curtime.tv_sec > endtime.tv_sec) || + ((curtime.tv_sec == endtime.tv_sec) && (curtime.tv_usec >= endtime.tv_usec))) { + break; + } + } + + /* delay for a bit */ + usleep(100000); + } + + /* exit */ + if (status & FE_HAS_LOCK) + return 0; + return -ETIMEDOUT; +} + +int dvbfe_get_pollfd(struct dvbfe_handle *handle) +{ + return handle->fd; +} + +int dvbfe_set_22k_tone(struct dvbfe_handle *fehandle, enum dvbfe_sec_tone_mode tone) +{ + int ret = 0; + + switch (tone) { + case DVBFE_SEC_TONE_OFF: + ret = ioctl(fehandle->fd, FE_SET_TONE, SEC_TONE_OFF); + break; + case DVBFE_SEC_TONE_ON: + ret = ioctl(fehandle->fd, FE_SET_TONE, SEC_TONE_ON); + break; + default: + print(verbose, ERROR, 1, "Invalid command !"); + break; + } + if (ret == -1) + print(verbose, ERROR, 1, "IOCTL failed !"); + + return ret; +} + +int dvbfe_set_tone_data_burst(struct dvbfe_handle *fehandle, enum dvbfe_sec_mini_cmd minicmd) +{ + int ret = 0; + + switch (minicmd) { + case DVBFE_SEC_MINI_A: + ret = ioctl(fehandle->fd, FE_DISEQC_SEND_BURST, SEC_MINI_A); + break; + case DVBFE_SEC_MINI_B: + ret = ioctl(fehandle->fd, FE_DISEQC_SEND_BURST, SEC_MINI_B); + break; + default: + print(verbose, ERROR, 1, "Invalid command"); + break; + } + if (ret == -1) + print(verbose, ERROR, 1, "IOCTL failed"); + + return ret; +} + +int dvbfe_set_voltage(struct dvbfe_handle *fehandle, enum dvbfe_sec_voltage voltage) +{ + int ret = 0; + + switch (voltage) { + case DVBFE_SEC_VOLTAGE_OFF: + ret = ioctl(fehandle->fd, FE_SET_VOLTAGE, SEC_VOLTAGE_OFF); + break; + case DVBFE_SEC_VOLTAGE_13: + ret = ioctl(fehandle->fd, FE_SET_VOLTAGE, SEC_VOLTAGE_13); + break; + case DVBFE_SEC_VOLTAGE_18: + ret = ioctl(fehandle->fd, FE_SET_VOLTAGE, SEC_VOLTAGE_18); + break; + default: + print(verbose, ERROR, 1, "Invalid command"); + break; + } + if (ret == -1) + print(verbose, ERROR, 1, "IOCTL failed"); + + return ret; +} + +int dvbfe_set_high_lnb_voltage(struct dvbfe_handle *fehandle, int on) +{ + switch (on) { + case 0: + ioctl(fehandle->fd, FE_ENABLE_HIGH_LNB_VOLTAGE, 0); + break; + default: + ioctl(fehandle->fd, FE_ENABLE_HIGH_LNB_VOLTAGE, 1); + break; + } + return 0; +} + +int dvbfe_do_dishnetworks_legacy_command(struct dvbfe_handle *fehandle, unsigned int cmd) +{ + int ret = 0; + + ret = ioctl(fehandle->fd, FE_DISHNETWORK_SEND_LEGACY_CMD, cmd); + if (ret == -1) + print(verbose, ERROR, 1, "IOCTL failed"); + + return ret; +} + +int dvbfe_do_diseqc_command(struct dvbfe_handle *fehandle, uint8_t *data, uint8_t len) +{ + int ret = 0; + struct dvb_diseqc_master_cmd diseqc_message; + + if (len > 6) + return -EINVAL; + + diseqc_message.msg_len = len; + memcpy(diseqc_message.msg, data, len); + + ret = ioctl(fehandle->fd, FE_DISEQC_SEND_MASTER_CMD, &diseqc_message); + if (ret == -1) + print(verbose, ERROR, 1, "IOCTL failed"); + + return ret; +} + +int dvbfe_diseqc_read(struct dvbfe_handle *fehandle, int timeout, unsigned char *buf, unsigned int len) +{ + struct dvb_diseqc_slave_reply reply; + int result; + + if (len > 4) + len = 4; + + reply.timeout = timeout; + reply.msg_len = len; + + if ((result = ioctl(fehandle->fd, FE_DISEQC_RECV_SLAVE_REPLY, reply)) != 0) + return result; + + if (reply.msg_len < len) + len = reply.msg_len; + memcpy(buf, reply.msg, len); + + return len; +} |