Something went wrong. Try again.
🎥 Command line media player
Something went wrong. Try again.
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654/* dvbtune - tune.c
Copyright (C) Dave Chapman 2001,2002 Copyright (C) Rozhuk Ivan <rozhuk.im@gmail.com> 2016 - 2017
Modified for use with MPlayer, for details see the changelog at http://svn.mplayerhq.hu/mplayer/trunk/ $Id$
This file is part of mpv.
mpv is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
mpv 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>#include <stdlib.h>#include <sys/ioctl.h>#include <poll.h>#include <fcntl.h>#include <errno.h>#include <linux/dvb/dmx.h>#include <linux/dvb/frontend.h>
#include "common/common.h"#include "osdep/io.h"#include "osdep/poll_wrapper.h"#include "osdep/timer.h"#include "dvbin.h"#include "dvb_tune.h"#include "common/msg.h"
/* Keep in sync with enum fe_delivery_system. */static const char *dvb_delsys_str[] = { "UNDEFINED", "DVB-C ANNEX A", "DVB-C ANNEX B", "DVB-T", "DSS", "DVB-S", "DVB-S2", "DVB-H", "ISDBT", "ISDBS", "ISDBC", "ATSC", "ATSCMH", "DTMB", "CMMB", "DAB", "DVB-T2", "TURBO", "DVB-C ANNEX C", NULL};
const char *get_dvb_delsys(unsigned int delsys){ if (SYS_DVB__COUNT__ <= delsys) return dvb_delsys_str[0]; return dvb_delsys_str[delsys];}
unsigned int dvb_get_tuner_delsys_mask(int fe_fd, struct mp_log *log){ unsigned int ret_mask = 0, delsys; struct dtv_property prop[1]; struct dtv_properties cmdseq = {.num = 1, .props = prop};
prop[0].cmd = DTV_ENUM_DELSYS; if (ioctl(fe_fd, FE_GET_PROPERTY, &cmdseq) < 0) { mp_err(log, "DVBv5: FE_GET_PROPERTY(DTV_ENUM_DELSYS) error: %d\n", errno); return ret_mask; } unsigned int delsys_count = prop[0].u.buffer.len; if (delsys_count == 0) { mp_err(log, "DVBv5: Frontend returned no delivery systems!\n"); return ret_mask; } mp_verbose(log, "DVBv5: Number of supported delivery systems: %d\n", delsys_count); for (unsigned int i = 0; i < delsys_count; i++) { delsys = (unsigned int)prop[0].u.buffer.data[i]; DELSYS_SET(ret_mask, delsys); mp_verbose(log, " %s\n", get_dvb_delsys(delsys)); }
return ret_mask;}
int dvb_open_devices(dvb_priv_t *priv, unsigned int adapter, unsigned int frontend, unsigned int demux_cnt){ dvb_state_t *state = priv->state;
char frontend_dev[100], dvr_dev[100], demux_dev[100]; snprintf(frontend_dev, sizeof(frontend_dev), "/dev/dvb/adapter%u/frontend%u", adapter, frontend); snprintf(dvr_dev, sizeof(dvr_dev), "/dev/dvb/adapter%u/dvr0", adapter); snprintf(demux_dev, sizeof(demux_dev), "/dev/dvb/adapter%u/demux0", adapter);
MP_VERBOSE(priv, "Opening frontend device %s\n", frontend_dev); state->fe_fd = open(frontend_dev, O_RDWR | O_NONBLOCK | O_CLOEXEC); if (state->fe_fd < 0) { MP_ERR(priv, "Error opening frontend device: %d\n", errno); return 0; }
state->demux_fds_cnt = 0; MP_VERBOSE(priv, "Opening %d demuxers\n", demux_cnt); for (unsigned int i = 0; i < demux_cnt; i++) { state->demux_fds[i] = open(demux_dev, O_RDWR | O_NONBLOCK | O_CLOEXEC); if (state->demux_fds[i] < 0) { MP_ERR(priv, "Error opening demux0: %d\n", errno); return 0; } state->demux_fds_cnt++; }
state->dvr_fd = open(dvr_dev, O_RDONLY | O_NONBLOCK | O_CLOEXEC); if (state->dvr_fd < 0) { MP_ERR(priv, "Error opening dvr device %s: %d\n", dvr_dev, errno); return 0; }
return 1;}
int dvb_fix_demuxes(dvb_priv_t *priv, unsigned int cnt){ dvb_state_t *state = priv->state;
char demux_dev[100]; snprintf(demux_dev, sizeof(demux_dev), "/dev/dvb/adapter%d/demux0", state->adapters[state->cur_adapter].devno);
MP_VERBOSE(priv, "Changing demuxer count %d -> %d\n", state->demux_fds_cnt, cnt); if (state->demux_fds_cnt >= cnt) { for (int i = state->demux_fds_cnt - 1; i >= (int)cnt; i--) { close(state->demux_fds[i]); } state->demux_fds_cnt = cnt; } else { for (int i = state->demux_fds_cnt; i < cnt; i++) { state->demux_fds[i] = open(demux_dev, O_RDWR | O_NONBLOCK | O_CLOEXEC); if (state->demux_fds[i] < 0) { MP_ERR(priv, "Error opening demux0: %d\n", errno); return 0; } state->demux_fds_cnt++; } }
return 1;}
int dvb_set_ts_filt(dvb_priv_t *priv, int fd, uint16_t pid, dmx_pes_type_t pestype){ int i; struct dmx_pes_filter_params pesFilterParams;
pesFilterParams.pid = pid; pesFilterParams.input = DMX_IN_FRONTEND; pesFilterParams.output = DMX_OUT_TS_TAP; pesFilterParams.pes_type = pestype; pesFilterParams.flags = DMX_IMMEDIATE_START;
{ int buffersize = 256 * 1024; if (ioctl(fd, DMX_SET_BUFFER_SIZE, buffersize) < 0) MP_ERR(priv, "Error in DMX_SET_BUFFER_SIZE %i: errno=%d\n", pid, errno); }
errno = 0; if ((i = ioctl(fd, DMX_SET_PES_FILTER, &pesFilterParams)) < 0) { MP_ERR(priv, "Error in DMX_SET_PES_FILTER %i: errno=%d\n", pid, errno); return 0; }
return 1;}
int dvb_get_pmt_pid(dvb_priv_t *priv, int devno, int service_id){ /* We need special filters on the demux, so open one locally, and close also here. */ char demux_dev[100]; snprintf(demux_dev, sizeof(demux_dev), "/dev/dvb/adapter%d/demux0", devno);
struct dmx_sct_filter_params fparams = {0}; fparams.pid = 0; fparams.filter.filter[0] = 0x00; fparams.filter.mask[0] = 0xff; fparams.timeout = 0; fparams.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
int pat_fd; if ((pat_fd = open(demux_dev, O_RDWR)) < 0) { MP_ERR(priv, "Opening PAT demux failed: %d", errno); return -1; }
if (ioctl(pat_fd, DMX_SET_FILTER, &fparams) < 0) { MP_ERR(priv, "ioctl DMX_SET_FILTER failed: %d", errno); close(pat_fd); return -1; }
int bytes_read; unsigned char buft[4096]; unsigned char *bufptr = buft;
int pmt_pid = -1;
bool pat_read = false; while (!pat_read) { bytes_read = read(pat_fd, bufptr, sizeof(buft)); if (bytes_read < 0 && errno == EOVERFLOW) bytes_read = read(pat_fd, bufptr, sizeof(buft)); if (bytes_read < 0) { MP_ERR(priv, "PAT: read error: %d", errno); close(pat_fd); return -1; }
int section_length = ((bufptr[1] & 0x0f) << 8) | bufptr[2]; if (bytes_read != section_length + 3) continue;
bufptr += 8; section_length -= 8;
/* assumes one section contains the whole pat */ pat_read = true; while (section_length > 0) { int this_service_id = (bufptr[0] << 8) | bufptr[1]; if (this_service_id == service_id) { pmt_pid = ((bufptr[2] & 0x1f) << 8) | bufptr[3]; section_length = 0; } bufptr += 4; section_length -= 4; } } close(pat_fd);
return pmt_pid;}
static void print_status(dvb_priv_t *priv, fe_status_t festatus){ MP_VERBOSE(priv, "FE_STATUS:"); if (festatus & FE_HAS_SIGNAL) MP_VERBOSE(priv, " FE_HAS_SIGNAL"); if (festatus & FE_TIMEDOUT) MP_VERBOSE(priv, " FE_TIMEDOUT"); if (festatus & FE_HAS_LOCK) MP_VERBOSE(priv, " FE_HAS_LOCK"); if (festatus & FE_HAS_CARRIER) MP_VERBOSE(priv, " FE_HAS_CARRIER"); if (festatus & FE_HAS_VITERBI) MP_VERBOSE(priv, " FE_HAS_VITERBI"); if (festatus & FE_HAS_SYNC) MP_VERBOSE(priv, " FE_HAS_SYNC"); MP_VERBOSE(priv, "\n");}
static int check_status(dvb_priv_t *priv, int fd_frontend, float tmout){ fe_status_t festatus; bool ok = false; int locks = 0;
struct pollfd pfd[1]; pfd[0].fd = fd_frontend; pfd[0].events = POLLPRI;
MP_VERBOSE(priv, "Getting frontend status\n"); int tm1 = (int)mp_time_sec(); while (!ok) { festatus = 0; if (mp_poll(pfd, 1, MP_TIME_S_TO_NS(tmout)) > 0) { if (pfd[0].revents & POLLPRI) { if (ioctl(fd_frontend, FE_READ_STATUS, &festatus) >= 0) { if (festatus & FE_HAS_LOCK) locks++; } } } usleep(10000); int tm2 = (int)mp_time_sec(); if ((festatus & FE_TIMEDOUT) || (locks >= 2) || (tm2 - tm1 >= tmout)) ok = true; }
if (!(festatus & FE_HAS_LOCK)) { MP_ERR(priv, "Not able to lock to the signal on the given frequency, " "timeout: %g\n", tmout); return -1; }
int32_t strength = 0; if (ioctl(fd_frontend, FE_READ_BER, &strength) >= 0) MP_VERBOSE(priv, "Bit error rate: %d\n", strength);
strength = 0; if (ioctl(fd_frontend, FE_READ_SIGNAL_STRENGTH, &strength) >= 0) MP_VERBOSE(priv, "Signal strength: %d\n", strength);
strength = 0; if (ioctl(fd_frontend, FE_READ_SNR, &strength) >= 0) MP_VERBOSE(priv, "SNR: %d\n", strength);
strength = 0; if (ioctl(fd_frontend, FE_READ_UNCORRECTED_BLOCKS, &strength) >= 0) MP_VERBOSE(priv, "UNC: %d\n", strength);
print_status(priv, festatus);
return 0;}
struct diseqc_cmd { struct dvb_diseqc_master_cmd cmd; uint32_t wait;};
static int diseqc_send_msg(int fd, fe_sec_voltage_t v, struct diseqc_cmd *cmd, fe_sec_tone_mode_t t, fe_sec_mini_cmd_t b){ if (ioctl(fd, FE_SET_TONE, SEC_TONE_OFF) < 0) return -1; if (ioctl(fd, FE_SET_VOLTAGE, v) < 0) return -1; usleep(15 * 1000); if (ioctl(fd, FE_DISEQC_SEND_MASTER_CMD, &cmd->cmd) < 0) return -1; usleep(cmd->wait * 1000); usleep(15 * 1000); if (ioctl(fd, FE_DISEQC_SEND_BURST, b) < 0) return -1; usleep(15 * 1000); if (ioctl(fd, FE_SET_TONE, t) < 0) return -1; usleep(100000);
return 0;}
/* digital satellite equipment control, * specification is available from http://www.eutelsat.com/ */static int do_diseqc(int secfd, int sat_no, int polv, int hi_lo){ struct diseqc_cmd cmd = { {{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4}, 0 };
/* param: high nibble: reset bits, low nibble set bits, * bits are: option, position, polarizaion, band */ cmd.cmd.msg[3] = 0xf0 | (((sat_no * 4) & 0x0f) | (hi_lo ? 1 : 0) | (polv ? 0 : 2));
return diseqc_send_msg(secfd, polv ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18, &cmd, hi_lo ? SEC_TONE_ON : SEC_TONE_OFF, ((sat_no / 4) % 2) ? SEC_MINI_B : SEC_MINI_A);}
static int dvbv5_tune(dvb_priv_t *priv, int fd_frontend, unsigned int delsys, struct dtv_properties* cmdseq){ MP_VERBOSE(priv, "Dumping raw tuning commands and values:\n"); for (int i = 0; i < cmdseq->num; ++i) { MP_VERBOSE(priv, " %02d: 0x%x(%d) => 0x%x(%d)\n", i, cmdseq->props[i].cmd, cmdseq->props[i].cmd, cmdseq->props[i].u.data, cmdseq->props[i].u.data); } if (ioctl(fd_frontend, FE_SET_PROPERTY, cmdseq) < 0) { MP_ERR(priv, "Error tuning channel\n"); return -1; } return 0;}
static int tune_it(dvb_priv_t *priv, int fd_frontend, unsigned int delsys, unsigned int freq, unsigned int srate, char pol, int stream_id, fe_spectral_inversion_t specInv, unsigned int diseqc, fe_modulation_t modulation, fe_code_rate_t HP_CodeRate, fe_transmit_mode_t TransmissionMode, fe_guard_interval_t guardInterval, fe_bandwidth_t bandwidth, fe_code_rate_t LP_CodeRate, fe_hierarchy_t hier, float timeout){ dvb_state_t *state = priv->state;
MP_VERBOSE(priv, "tune_it: fd_frontend %d, %s freq %lu, srate %lu, " "pol %c, diseqc %u\n", fd_frontend, get_dvb_delsys(delsys), (long unsigned int)freq, (long unsigned int)srate, (pol > ' ' ? pol : '-'), diseqc);
MP_VERBOSE(priv, "Using %s adapter %d\n", get_dvb_delsys(delsys), state->adapters[state->cur_adapter].devno);
{ /* discard stale QPSK events */ struct dvb_frontend_event ev; while (true) { if (ioctl(fd_frontend, FE_GET_EVENT, &ev) < 0) break; } }
/* Prepare params, be verbose. */ int hi_lo = 0, bandwidth_hz = 0; switch (delsys) { case SYS_DVBT2: case SYS_DVBT: case SYS_ISDBT: if (freq < 1000000) freq *= 1000UL; switch (bandwidth) { case BANDWIDTH_5_MHZ: bandwidth_hz = 5000000; break; case BANDWIDTH_6_MHZ: bandwidth_hz = 6000000; break; case BANDWIDTH_7_MHZ: bandwidth_hz = 7000000; break; case BANDWIDTH_8_MHZ: bandwidth_hz = 8000000; break; case BANDWIDTH_10_MHZ: bandwidth_hz = 10000000; break; case BANDWIDTH_AUTO: if (freq < 474000000) { bandwidth_hz = 7000000; } else { bandwidth_hz = 8000000; } break; default: bandwidth_hz = 0; break; }
MP_VERBOSE(priv, "tuning %s to %d Hz, bandwidth: %d\n", get_dvb_delsys(delsys), freq, bandwidth_hz); break; case SYS_DVBS2: case SYS_DVBS: if (freq > 2200000) { // this must be an absolute frequency if (freq < SLOF) { freq -= LOF1; hi_lo = 0; } else { freq -= LOF2; hi_lo = 1; } } MP_VERBOSE(priv, "tuning %s to Freq: %u, Pol: %c Srate: %d, " "22kHz: %s, LNB: %d\n", get_dvb_delsys(delsys), freq, pol, srate, hi_lo ? "on" : "off", diseqc);
if (do_diseqc(fd_frontend, diseqc, (pol == 'V' ? 1 : 0), hi_lo) == 0) { MP_VERBOSE(priv, "DISEQC setting succeeded\n"); } else { MP_ERR(priv, "DISEQC setting failed\n"); return -1; }
break; case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: MP_VERBOSE(priv, "tuning %s to %d, srate=%d\n", get_dvb_delsys(delsys), freq, srate); break; case SYS_ATSC: case SYS_DVBC_ANNEX_B: MP_VERBOSE(priv, "tuning %s to %d, modulation=%d\n", get_dvb_delsys(delsys), freq, modulation); break; default: MP_VERBOSE(priv, "Unknown FE type, aborting.\n"); return 0; }
/* S2API is the DVB API new since 2.6.28. * It is needed to tune to new delivery systems, e.g. DVB-S2. * It takes a struct with a list of pairs of command + parameter. */
/* Reset before tune. */ struct dtv_property p_clear[] = { { .cmd = DTV_CLEAR }, }; struct dtv_properties cmdseq_clear = { .num = 1, .props = p_clear }; if (ioctl(fd_frontend, FE_SET_PROPERTY, &cmdseq_clear) < 0) { MP_ERR(priv, "DTV_CLEAR failed\n"); }
/* Tune. */ switch (delsys) { case SYS_DVBS: case SYS_DVBS2: { struct dtv_property p[] = { { .cmd = DTV_DELIVERY_SYSTEM, .u.data = delsys }, { .cmd = DTV_FREQUENCY, .u.data = freq }, { .cmd = DTV_MODULATION, .u.data = modulation }, { .cmd = DTV_SYMBOL_RATE, .u.data = srate }, { .cmd = DTV_INNER_FEC, .u.data = HP_CodeRate }, { .cmd = DTV_INVERSION, .u.data = specInv }, { .cmd = DTV_ROLLOFF, .u.data = ROLLOFF_AUTO }, { .cmd = DTV_PILOT, .u.data = PILOT_AUTO }, { .cmd = DTV_TUNE }, }; struct dtv_properties cmdseq = { .num = sizeof(p) / sizeof(p[0]), .props = p }; if (dvbv5_tune(priv, fd_frontend, delsys, &cmdseq) != 0) { goto error_tune; } } break; case SYS_DVBT: case SYS_DVBT2: case SYS_ISDBT: { struct dtv_property p[] = { { .cmd = DTV_DELIVERY_SYSTEM, .u.data = delsys }, { .cmd = DTV_FREQUENCY, .u.data = freq }, { .cmd = DTV_MODULATION, .u.data = modulation }, { .cmd = DTV_SYMBOL_RATE, .u.data = srate }, { .cmd = DTV_CODE_RATE_HP, .u.data = HP_CodeRate }, { .cmd = DTV_CODE_RATE_LP, .u.data = LP_CodeRate }, { .cmd = DTV_INVERSION, .u.data = specInv }, { .cmd = DTV_BANDWIDTH_HZ, .u.data = bandwidth_hz }, { .cmd = DTV_TRANSMISSION_MODE, .u.data = TransmissionMode }, { .cmd = DTV_GUARD_INTERVAL, .u.data = guardInterval }, { .cmd = DTV_HIERARCHY, .u.data = hier }, { .cmd = DTV_STREAM_ID, .u.data = stream_id }, { .cmd = DTV_TUNE }, }; struct dtv_properties cmdseq = { .num = sizeof(p) / sizeof(p[0]), .props = p }; if (dvbv5_tune(priv, fd_frontend, delsys, &cmdseq) != 0) { goto error_tune; } } break; case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: { struct dtv_property p[] = { { .cmd = DTV_DELIVERY_SYSTEM, .u.data = delsys }, { .cmd = DTV_FREQUENCY, .u.data = freq }, { .cmd = DTV_MODULATION, .u.data = modulation }, { .cmd = DTV_SYMBOL_RATE, .u.data = srate }, { .cmd = DTV_INNER_FEC, .u.data = HP_CodeRate }, { .cmd = DTV_INVERSION, .u.data = specInv }, { .cmd = DTV_TUNE }, }; struct dtv_properties cmdseq = { .num = sizeof(p) / sizeof(p[0]), .props = p }; if (dvbv5_tune(priv, fd_frontend, delsys, &cmdseq) != 0) { goto error_tune; } } break; case SYS_ATSC: case SYS_DVBC_ANNEX_B: { struct dtv_property p[] = { { .cmd = DTV_DELIVERY_SYSTEM, .u.data = delsys }, { .cmd = DTV_FREQUENCY, .u.data = freq }, { .cmd = DTV_INVERSION, .u.data = specInv }, { .cmd = DTV_MODULATION, .u.data = modulation }, { .cmd = DTV_TUNE }, }; struct dtv_properties cmdseq = { .num = sizeof(p) / sizeof(p[0]), .props = p }; if (dvbv5_tune(priv, fd_frontend, delsys, &cmdseq) != 0) { goto error_tune; } } break; }
int tune_status = check_status(priv, fd_frontend, timeout); if (tune_status != 0) { MP_ERR(priv, "Error locking to channel\n"); } return tune_status;
error_tune: MP_ERR(priv, "Error tuning channel\n"); return -1;}
int dvb_tune(dvb_priv_t *priv, unsigned int delsys, int freq, char pol, int srate, int diseqc, int stream_id, fe_spectral_inversion_t specInv, fe_modulation_t modulation, fe_guard_interval_t guardInterval, fe_transmit_mode_t TransmissionMode, fe_bandwidth_t bandWidth, fe_code_rate_t HP_CodeRate, fe_code_rate_t LP_CodeRate, fe_hierarchy_t hier, float timeout){ MP_INFO(priv, "Tuning to %s frequency %lu Hz\n", get_dvb_delsys(delsys), (long unsigned int) freq);
dvb_state_t *state = priv->state;
int ris = tune_it(priv, state->fe_fd, delsys, freq, srate, pol, stream_id, specInv, diseqc, modulation, HP_CodeRate, TransmissionMode, guardInterval, bandWidth, LP_CodeRate, hier, timeout);
if (ris != 0) MP_INFO(priv, "Tuning failed\n");
return ris == 0;}