3 * @brief Linux DVB API version 5
5 /*****************************************************************************
6 * Copyright © 2011 Rémi Denis-Courmont
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
27 #include <vlc_common.h>
35 #include <sys/ioctl.h>
36 #include <linux/dvb/version.h>
37 #include <linux/dvb/frontend.h>
38 #include <linux/dvb/dmx.h>
42 # include "dtv/en50221.h"
46 # define O_SEARCH O_RDONLY
49 #define DVBv5(minor) \
50 (DVB_API_VERSION > 5 \
51 || (DVB_API_VERSION == 5 && DVB_API_VERSION_MINOR >= (minor)))
59 static int icmp (const void *a, const void *b)
61 int key = (intptr_t)a;
62 const dvb_int_map_t *entry = b;
63 return key - entry->vlc;
66 /** Maps a VLC config integer to a Linux DVB enum value */
67 static int dvb_parse_int (int i, const dvb_int_map_t *map, size_t n, int def)
69 const void *k = (const void *)(intptr_t)i;
70 const dvb_int_map_t *p = bsearch (k, map, n, sizeof (*map), icmp);
71 return (p != NULL) ? p->linux_ : def;
80 static int scmp (const void *a, const void *b)
83 dvb_str_map_t *entry = b;
84 return strcmp (key, entry->vlc);
87 /** Maps a VLC config string to a Linux DVB enum value */
88 static int dvb_parse_str (const char *str, const dvb_str_map_t *map, size_t n,
93 const dvb_str_map_t *p = bsearch (str, map, n, sizeof (*map), scmp);
100 /*** Modulations ***/
101 static int dvb_parse_modulation (const char *str, int def)
103 static const dvb_str_map_t mods[] =
105 { "128QAM", QAM_128 },
106 { "16APSK", APSK_16 },
109 { "256QAM", QAM_256 },
110 { "32APSK", APSK_32 },
119 return dvb_parse_str (str, mods, sizeof (mods) / sizeof (*mods), def);
122 static int dvb_parse_fec (uint32_t fec)
124 static const dvb_int_map_t rates[] =
127 { VLC_FEC(1,2), FEC_1_2 },
130 { VLC_FEC(2,3), FEC_2_3 },
131 { VLC_FEC(3,4), FEC_3_4 },
132 { VLC_FEC(3,5), FEC_3_5 },
133 { VLC_FEC(4,5), FEC_4_5 },
134 { VLC_FEC(5,6), FEC_5_6 },
135 { VLC_FEC(6,7), FEC_6_7 },
136 { VLC_FEC(7,8), FEC_7_8 },
137 { VLC_FEC(8,9), FEC_8_9 },
138 { VLC_FEC(9,10), FEC_9_10 },
139 { VLC_FEC_AUTO, FEC_AUTO },
141 return dvb_parse_int (fec, rates, sizeof (rates) / sizeof (*rates),
153 # define MAX_PIDS 256
165 //size_t buffer_size;
168 /** Opens the device directory for the specified DVB adapter */
169 static int dvb_open_adapter (uint8_t adapter)
173 snprintf (dir, sizeof (dir), "/dev/dvb/adapter%"PRIu8, adapter);
174 return vlc_open (dir, O_SEARCH|O_DIRECTORY);
177 /** Opens the DVB device node of the specified type */
178 static int dvb_open_node (dvb_device_t *d, const char *type, int flags)
181 char path[strlen (type) + 4];
183 snprintf (path, sizeof (path), "%s%u", type, d->device);
184 fd = vlc_openat (d->dir, path, flags);
186 fcntl (fd, F_SETFL, fcntl (fd, F_GETFL) | O_NONBLOCK);
191 * Opens the DVB tuner
193 dvb_device_t *dvb_open (vlc_object_t *obj)
195 dvb_device_t *d = malloc (sizeof (*d));
196 if (unlikely(d == NULL))
201 uint8_t adapter = var_InheritInteger (obj, "dvb-adapter");
202 d->device = var_InheritInteger (obj, "dvb-device");
204 d->dir = dvb_open_adapter (adapter);
207 msg_Err (obj, "cannot access adapter %"PRIu8": %m", adapter);
215 d->budget = var_InheritBool (obj, "dvb-budget-mode");
221 d->demux = dvb_open_node (d, "demux", O_RDONLY);
224 msg_Err (obj, "cannot access demultiplexer: %m");
230 if (ioctl (d->demux, DMX_SET_BUFFER_SIZE, 1 << 20) < 0)
231 msg_Warn (obj, "cannot expand demultiplexing buffer: %m");
233 /* We need to filter at least one PID. The tap for TS demultiplexing
234 * cannot be configured otherwise. So add the PAT. */
235 struct dmx_pes_filter_params param;
237 param.pid = d->budget ? 0x2000 : 0x000;
238 param.input = DMX_IN_FRONTEND;
239 param.output = DMX_OUT_TSDEMUX_TAP;
240 param.pes_type = DMX_PES_OTHER;
241 param.flags = DMX_IMMEDIATE_START;
242 if (ioctl (d->demux, DMX_SET_PES_FILTER, ¶m) < 0)
244 msg_Err (obj, "cannot setup TS demultiplexer: %m");
251 for (size_t i = 0; i < MAX_PIDS; i++)
252 d->pids[i].pid = d->pids[i].fd = -1;
253 d->demux = dvb_open_node (d, "dvr", O_RDONLY);
256 msg_Err (obj, "cannot access DVR: %m");
265 int ca = dvb_open_node (d, "ca", O_RDWR);
268 d->cam = en50221_Init (obj, ca);
273 msg_Dbg (obj, "conditional access module not available (%m)");
282 void dvb_close (dvb_device_t *d)
287 for (size_t i = 0; i < MAX_PIDS; i++)
288 if (d->pids[i].fd != -1)
289 close (d->pids[i].fd);
294 en50221_End (d->cam);
296 if (d->frontend != -1)
304 * Reads TS data from the tuner.
305 * @return number of bytes read, 0 on EOF, -1 if no data (yet).
307 ssize_t dvb_read (dvb_device_t *d, void *buf, size_t len)
309 struct pollfd ufd[2];
314 en50221_Poll (d->cam);
317 ufd[0].fd = d->demux;
318 ufd[0].events = POLLIN;
319 if (d->frontend != -1)
321 ufd[1].fd = d->frontend;
322 ufd[1].events = POLLIN;
328 if (poll (ufd, n, 500 /* FIXME */) < 0)
331 if (d->frontend != -1 && ufd[1].revents)
333 struct dvb_frontend_event ev;
335 if (ioctl (d->frontend, FE_GET_EVENT, &ev) < 0)
337 if (errno == EOVERFLOW)
339 msg_Err (d->obj, "cannot dequeue events fast enough!");
342 msg_Err (d->obj, "cannot dequeue frontend event: %m");
346 msg_Dbg (d->obj, "frontend status: 0x%02X", (unsigned)ev.status);
351 ssize_t val = read (d->demux, buf, len);
352 if (val == -1 && (errno != EAGAIN && errno != EINTR))
354 if (errno == EOVERFLOW)
356 msg_Err (d->obj, "cannot demux data fast enough!");
359 msg_Err (d->obj, "cannot demux: %m");
368 int dvb_add_pid (dvb_device_t *d, uint16_t pid)
373 if (pid == 0 || ioctl (d->demux, DMX_ADD_PID, &pid) >= 0)
376 for (size_t i = 0; i < MAX_PIDS; i++)
378 if (d->pids[i].pid == pid)
380 if (d->pids[i].fd != -1)
383 int fd = dvb_open_node (d, "demux", O_RDONLY);
387 /* We need to filter at least one PID. The tap for TS demultiplexing
388 * cannot be configured otherwise. So add the PAT. */
389 struct dmx_pes_filter_params param;
392 param.input = DMX_IN_FRONTEND;
393 param.output = DMX_OUT_TS_TAP;
394 param.pes_type = DMX_PES_OTHER;
395 param.flags = DMX_IMMEDIATE_START;
396 if (ioctl (fd, DMX_SET_PES_FILTER, ¶m) < 0)
402 d->pids[i].pid = pid;
408 msg_Err (d->obj, "cannot add PID 0x%04"PRIu16": %m", pid);
412 void dvb_remove_pid (dvb_device_t *d, uint16_t pid)
418 ioctl (d->demux, DMX_REMOVE_PID, &pid);
420 for (size_t i = 0; i < MAX_PIDS; i++)
422 if (d->pids[i].pid == pid)
424 close (d->pids[i].fd);
425 d->pids[i].pid = d->pids[i].fd = -1;
432 /** Finds a frontend of the correct type */
433 static int dvb_open_frontend (dvb_device_t *d)
435 if (d->frontend != -1)
437 int fd = dvb_open_node (d, "frontend", O_RDWR);
440 msg_Err (d->obj, "cannot access frontend: %m");
447 #define dvb_find_frontend(d, sys) (dvb_open_frontend(d))
450 * Detects supported delivery systems.
451 * @return a bit mask of supported systems (zero on failure)
453 unsigned dvb_enum_systems (dvb_device_t *d)
455 if (dvb_open_frontend (d))
458 struct dtv_property prop[2] = {
459 { .cmd = DTV_API_VERSION },
460 { .cmd = DTV_ENUM_DELSYS },
462 struct dtv_properties props = {
467 if (ioctl (d->frontend, FE_GET_PROPERTY, &props) < 0)
469 msg_Err (d->obj, "cannot enumerate frontend systems: %m");
473 static const unsigned systab[] = {
475 [SYS_DVBC_ANNEX_A] = DVB_C,
476 [SYS_DVBC_ANNEX_B] = CQAM,
480 [SYS_DVBS2] = DVB_S2,
482 [SYS_ISDBT] = ISDB_T,
483 [SYS_ISDBS] = ISDB_S,
484 [SYS_ISDBC] = ISDB_C, // no drivers exist (as of 3.3-rc6)
490 [SYS_DVBT2] = DVB_T2,
492 [SYS_DVBC_ANNEX_C] = ISDB_C, // another name for ISDB-C?
494 unsigned systems = 0;
496 msg_Dbg (d->obj, "probing frontend (kernel API v%u.%u, user API v%u.%u)",
497 prop[0].u.data >> 8, prop[0].u.data & 0xFF,
498 DVB_API_VERSION, DVB_API_VERSION_MINOR);
500 for (size_t i = 0; i < prop[1].u.buffer.len; i++)
502 unsigned sys = prop[1].u.buffer.data[i];
504 if (sys >= (sizeof (systab) / sizeof (systab[0])) || !systab[sys])
506 msg_Warn (d->obj, "unknown delivery system %u", sys);
509 msg_Dbg (d->obj, " system %u", sys);
510 systems |= systab[sys];
517 struct dtv_property prop[1] = {
518 { .cmd = DTV_API_VERSION },
520 struct dtv_properties props = {
524 unsigned systems = 0;
526 if (ioctl (d->frontend, FE_GET_PROPERTY, &props) < 0)
528 msg_Err (d->obj, "unsupported kernel DVB version 3 or older (%m)");
532 msg_Dbg (d->obj, "probing frontend (kernel API v%u.%u, user API v%u.%u)",
533 prop[0].u.data >> 8, prop[0].u.data & 0xFF,
534 DVB_API_VERSION, DVB_API_VERSION_MINOR);
536 /* Some delivery systems cannot be detected without the DVB API v5.5.
537 * To run correctly on recent kernels (Linux >= 3.3),
538 * VLC needs to be compiled with up-to-date kernel headers. */
539 if ((prop[0].u.data >> 8) > 5
540 || ((prop[0].u.data >> 8) == 5 && (prop[0].u.data & 0xFF) >= 5))
541 msg_Err (d->obj, "obsolete user API version running on a new kernel");
542 msg_Info (d->obj, "please recompile "PACKAGE_NAME" "PACKAGE_VERSION);
544 struct dvb_frontend_info info;
545 if (ioctl (d->frontend, FE_GET_INFO, &info) < 0)
547 msg_Err (d->obj, "cannot get frontend info: %m");
550 msg_Dbg (d->obj, " name %s", info.name);
551 msg_Dbg (d->obj, " type %u, capabilities 0x%08X", info.type, info.caps);
552 msg_Dbg (d->obj, " frequencies %10"PRIu32" to %10"PRIu32,
553 info.frequency_min, info.frequency_max);
554 msg_Dbg (d->obj, " (%"PRIu32" tolerance, %"PRIu32" per step)",
555 info.frequency_tolerance, info.frequency_stepsize);
556 msg_Dbg (d->obj, " bauds rates %10"PRIu32" to %10"PRIu32,
557 info.symbol_rate_min, info.symbol_rate_max);
558 msg_Dbg (d->obj, " (%"PRIu32" tolerance)", info.symbol_rate_tolerance);
560 /* DVB first generation and ATSC */
563 case FE_QPSK: systems = DVB_S; break;
564 case FE_QAM: systems = DVB_C; break;
565 case FE_OFDM: systems = DVB_T; break;
566 case FE_ATSC: systems = ATSC | CQAM; break;
568 msg_Err (d->obj, "unknown frontend type %u", info.type);
571 /* DVB 2nd generation */
577 if (info.caps & FE_CAN_2G_MODULATION)
578 systems |= systems << 1; /* DVB_foo -> DVB_foo|DVB_foo2 */
583 /* ISDB (only terrestrial before DVBv5.5) */
584 if (info.type == FE_OFDM)
590 float dvb_get_signal_strength (dvb_device_t *d)
594 if (d->frontend == -1
595 || ioctl (d->frontend, FE_READ_SIGNAL_STRENGTH, &strength) < 0)
597 return strength / 65535.;
600 float dvb_get_snr (dvb_device_t *d)
604 if (d->frontend == -1 || ioctl (d->frontend, FE_READ_SNR, &snr) < 0)
610 void dvb_set_ca_pmt (dvb_device_t *d, struct dvbpsi_pmt_s *pmt)
613 en50221_SetCAPMT (d->cam, pmt);
617 static int dvb_vset_props (dvb_device_t *d, size_t n, va_list ap)
619 assert (n <= DTV_IOCTL_MAX_MSGS);
621 struct dtv_property buf[n], *prop = buf;
622 struct dtv_properties props = { .num = n, .props = buf };
624 memset (buf, 0, sizeof (buf));
628 prop->cmd = va_arg (ap, uint32_t);
629 prop->u.data = va_arg (ap, uint32_t);
630 msg_Dbg (d->obj, "setting property %2"PRIu32" to %"PRIu32,
631 prop->cmd, prop->u.data);
636 if (ioctl (d->frontend, FE_SET_PROPERTY, &props) < 0)
638 msg_Err (d->obj, "cannot set frontend tuning parameters: %m");
644 static int dvb_set_props (dvb_device_t *d, size_t n, ...)
650 ret = dvb_vset_props (d, n, ap);
655 static int dvb_set_prop (dvb_device_t *d, uint32_t prop, uint32_t val)
657 return dvb_set_props (d, 1, prop, val);
660 int dvb_set_inversion (dvb_device_t *d, int v)
664 case 0: v = INVERSION_OFF; break;
665 case 1: v = INVERSION_ON; break;
666 default: v = INVERSION_AUTO; break;
668 return dvb_set_prop (d, DTV_INVERSION, v);
671 int dvb_tune (dvb_device_t *d)
673 return dvb_set_prop (d, DTV_TUNE, 0 /* dummy */);
678 int dvb_set_dvbc (dvb_device_t *d, uint32_t freq, const char *modstr,
679 uint32_t srate, uint32_t fec)
681 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
682 fec = dvb_parse_fec (fec);
684 if (dvb_find_frontend (d, DVB_C))
686 return dvb_set_props (d, 6, DTV_CLEAR, 0,
688 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_A,
690 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
692 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
693 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
698 static unsigned dvb_parse_polarization (char pol)
700 static const dvb_int_map_t tab[5] = {
701 { 0, SEC_VOLTAGE_OFF },
702 { 'H', SEC_VOLTAGE_18 },
703 { 'L', SEC_VOLTAGE_18 },
704 { 'R', SEC_VOLTAGE_13 },
705 { 'V', SEC_VOLTAGE_13 },
707 return dvb_parse_int (pol, tab, 5, SEC_VOLTAGE_OFF);
710 int dvb_set_sec (dvb_device_t *d, uint64_t freq_Hz, char pol,
711 uint32_t lowf, uint32_t highf, uint32_t switchf)
713 uint32_t freq = freq_Hz / 1000;
715 /* Always try to configure high voltage, but only warn on enable failure */
716 int val = var_InheritBool (d->obj, "dvb-high-voltage");
717 if (ioctl (d->frontend, FE_ENABLE_HIGH_LNB_VOLTAGE, &val) < 0 && val)
718 msg_Err (d->obj, "cannot enable high LNB voltage: %m");
720 /* Windows BDA exposes a higher-level API covering LNB oscillators.
721 * So lets pretend this is platform-specific stuff and do it here. */
723 { /* Default oscillator frequencies */
726 uint16_t min, max, low, high;
728 { /* min max low high */
729 { 10700, 13250, 9750, 10600 }, /* Ku band */
730 { 4500, 4800, 5950, 0 }, /* C band (high) */
731 { 3400, 4200, 5150, 0 }, /* C band (low) */
732 { 2500, 2700, 3650, 0 }, /* S band */
733 { 950, 2150, 0, 0 }, /* adjusted IF (L band) */
735 uint_fast16_t mHz = freq / 1000;
737 for (size_t i = 0; i < sizeof (tab) / sizeof (tab[0]); i++)
738 if (mHz >= tab[i].min && mHz <= tab[i].max)
740 lowf = tab[i].low * 1000;
741 highf = tab[i].high * 1000;
745 msg_Err (d->obj, "no known band for frequency %u kHz", freq);
747 msg_Dbg (d->obj, "selected LNB low: %u kHz, LNB high: %u kHz",
751 /* Use high oscillator frequency? */
752 bool high = highf != 0 && freq > switchf;
754 freq -= high ? highf : lowf;
755 if ((int32_t)freq < 0)
757 assert (freq < 0x7fffffff);
760 switch (var_InheritInteger (d->obj, "dvb-tone"))
762 case 0: tone = SEC_TONE_OFF; break;
763 case 1: tone = SEC_TONE_ON; break;
764 default: tone = high ? SEC_TONE_ON : SEC_TONE_OFF;
767 /*** LNB selection / DiSEqC ***/
768 unsigned voltage = dvb_parse_polarization (pol);
769 if (dvb_set_props (d, 2, DTV_TONE, SEC_TONE_OFF, DTV_VOLTAGE, voltage))
772 unsigned satno = var_InheritInteger (d->obj, "dvb-satno");
775 #undef msleep /* we know what we are doing! */
777 /* DiSEqC Bus Specification:
778 http://www.eutelsat.com/satellites/pdf/Diseqc/Reference%20docs/bus_spec.pdf */
781 struct dvb_diseqc_master_cmd uncmd;
784 struct dvb_diseqc_master_cmd cmd;
786 satno = (satno - 1) & 3;
787 cmd.msg[0] = 0xE0; /* framing: master, no reply, 1st TX */
788 cmd.msg[1] = 0x10; /* address: all LNB/switch */
789 cmd.msg[2] = 0x38; /* command: Write Port Group 0 (committed) */
790 cmd.msg[3] = 0xF0 /* data[0]: clear all bits */
791 | (satno << 2) /* LNB (A, B, C or D) */
792 | ((voltage == SEC_VOLTAGE_18) << 1) /* polarization */
793 | (tone == SEC_TONE_ON); /* option */
794 cmd.msg[4] = cmd.msg[5] = 0; /* unused */
795 cmd.msg_len = 4; /* length */
797 msleep (15000); /* wait 15 ms before DiSEqC command */
798 unsigned uncommitted = var_InheritInteger (d->obj, "dvb-uncommitted");
801 uncommitted = (uncommitted - 1) & 3;
802 uncmd.msg[0] = 0xE0; /* framing: master, no reply, 1st TX */
803 uncmd.msg[1] = 0x10; /* address: all LNB/switch */
804 uncmd.msg[2] = 0x39; /* command: Write Port Group 1 (uncommitted) */
805 uncmd.msg[3] = 0xF0 /* data[0]: clear all bits */
806 | (uncommitted << 2) /* LNB (A, B, C or D) */
807 | ((voltage == SEC_VOLTAGE_18) << 1) /* polarization */
808 | (tone == SEC_TONE_ON); /* option */
809 uncmd.msg[4] = uncmd.msg[5] = 0; /* unused */
810 uncmd.msg_len = 4; /* length */
811 if (ioctl (d->frontend, FE_DISEQC_SEND_MASTER_CMD, &uncmd) < 0)
813 msg_Err (d->obj, "cannot send uncommitted DiSEqC command: %m");
816 /* Repeat uncommitted command */
817 uncmd.msg[0] = 0xE1; /* framing: master, no reply, repeated TX */
818 if (ioctl (d->frontend, FE_DISEQC_SEND_MASTER_CMD, &uncmd) < 0)
821 "cannot send repeated uncommitted DiSEqC command: %m");
824 msleep(125000); /* wait 125 ms before committed DiSEqC command */
826 if (ioctl (d->frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd) < 0)
828 msg_Err (d->obj, "cannot send committed DiSEqC command: %m");
831 msleep (54000 + 15000);
835 if (ioctl (d->frontend, FE_DISEQC_SEND_BURST,
836 satno ? SEC_MINI_B : SEC_MINI_A) < 0)
838 msg_Err (d->obj, "cannot send Mini-DiSEqC tone burst: %m");
844 /* Continuous tone (to select high oscillator frequency) */
845 return dvb_set_props (d, 2, DTV_FREQUENCY, freq, DTV_TONE, tone);
848 int dvb_set_dvbs (dvb_device_t *d, uint64_t freq_Hz,
849 uint32_t srate, uint32_t fec)
851 uint32_t freq = freq_Hz / 1000;
852 fec = dvb_parse_fec (fec);
854 if (dvb_find_frontend (d, DVB_S))
856 return dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS,
857 DTV_FREQUENCY, freq, DTV_SYMBOL_RATE, srate,
861 int dvb_set_dvbs2 (dvb_device_t *d, uint64_t freq_Hz, const char *modstr,
862 uint32_t srate, uint32_t fec, int pilot, int rolloff)
864 uint32_t freq = freq_Hz / 1000;
865 unsigned mod = dvb_parse_modulation (modstr, QPSK);
866 fec = dvb_parse_fec (fec);
870 case 0: pilot = PILOT_OFF; break;
871 case 1: pilot = PILOT_ON; break;
872 default: pilot = PILOT_AUTO; break;
877 case 20: rolloff = ROLLOFF_20; break;
878 case 25: rolloff = ROLLOFF_25; break;
879 case 35: rolloff = ROLLOFF_35; break;
880 default: rolloff = PILOT_AUTO; break;
883 if (dvb_find_frontend (d, DVB_S2))
885 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS2,
886 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
887 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec,
888 DTV_PILOT, pilot, DTV_ROLLOFF, rolloff);
893 static uint32_t dvb_parse_bandwidth (uint32_t i)
898 case 2: return 1712000;
899 default: return i * 1000000;
903 static int dvb_parse_transmit_mode (int i)
905 static const dvb_int_map_t tab[] = {
906 { -1, TRANSMISSION_MODE_AUTO },
908 { 1, TRANSMISSION_MODE_1K },
910 { 2, TRANSMISSION_MODE_2K },
911 { 4, TRANSMISSION_MODE_4K },
912 { 8, TRANSMISSION_MODE_8K },
914 { 16, TRANSMISSION_MODE_16K },
915 { 32, TRANSMISSION_MODE_32K },
918 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
919 TRANSMISSION_MODE_AUTO);
922 static int dvb_parse_guard (uint32_t guard)
924 static const dvb_int_map_t tab[] = {
925 { VLC_GUARD(1,4), GUARD_INTERVAL_1_4 },
926 { VLC_GUARD(1,8), GUARD_INTERVAL_1_8 },
927 { VLC_GUARD(1,16), GUARD_INTERVAL_1_16 },
928 { VLC_GUARD(1,32), GUARD_INTERVAL_1_32 },
930 { VLC_GUARD(1,128), GUARD_INTERVAL_1_128 },
931 { VLC_GUARD(19,128), GUARD_INTERVAL_19_128 },
932 { VLC_GUARD(19,256), GUARD_INTERVAL_19_256 },
934 { VLC_GUARD_AUTO, GUARD_INTERVAL_AUTO },
936 return dvb_parse_int (guard, tab, sizeof (tab) / sizeof (*tab),
937 GUARD_INTERVAL_AUTO);
940 static int dvb_parse_hierarchy (int i)
942 static const dvb_int_map_t tab[] = {
943 { HIERARCHY_AUTO, -1 },
944 { HIERARCHY_NONE, 0 },
949 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
953 int dvb_set_dvbt (dvb_device_t *d, uint32_t freq, const char *modstr,
954 uint32_t fec_hp, uint32_t fec_lp, uint32_t bandwidth,
955 int transmit_mode, uint32_t guard, int hierarchy)
957 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
958 fec_hp = dvb_parse_fec (fec_hp);
959 fec_lp = dvb_parse_fec (fec_lp);
960 bandwidth = dvb_parse_bandwidth (bandwidth);
961 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
962 guard = dvb_parse_guard (guard);
963 hierarchy = dvb_parse_hierarchy (hierarchy);
965 if (dvb_find_frontend (d, DVB_T))
967 return dvb_set_props (d, 10, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT,
968 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
969 DTV_CODE_RATE_HP, fec_hp, DTV_CODE_RATE_LP, fec_lp,
970 DTV_BANDWIDTH_HZ, bandwidth,
971 DTV_TRANSMISSION_MODE, transmit_mode,
972 DTV_GUARD_INTERVAL, guard,
973 DTV_HIERARCHY, hierarchy);
976 int dvb_set_dvbt2 (dvb_device_t *d, uint32_t freq, const char *modstr,
977 uint32_t fec, uint32_t bandwidth,
978 int transmit_mode, uint32_t guard, uint32_t plp)
981 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
982 fec = dvb_parse_fec (fec);
983 bandwidth = dvb_parse_bandwidth (bandwidth);
984 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
985 guard = dvb_parse_guard (guard);
987 if (dvb_find_frontend (d, DVB_T2))
989 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT2,
990 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
991 DTV_INNER_FEC, fec, DTV_BANDWIDTH_HZ, bandwidth,
992 DTV_TRANSMISSION_MODE, transmit_mode,
993 DTV_GUARD_INTERVAL, guard,
1001 # warning DVB-T2 needs Linux DVB version 5.3 or later.
1002 msg_Err (d->obj, "DVB-T2 support not compiled-in");
1003 (void) freq; (void) modstr; (void) fec; (void) bandwidth;
1004 (void) transmit_mode; (void) guard;
1011 int dvb_set_isdbc (dvb_device_t *d, uint32_t freq, const char *modstr,
1012 uint32_t srate, uint32_t fec)
1014 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
1015 fec = dvb_parse_fec (fec);
1017 if (dvb_find_frontend (d, ISDB_C))
1019 return dvb_set_props (d, 6, DTV_CLEAR, 0,
1021 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_C,
1023 # warning ISDB-C might need Linux DVB version 5.5 or later.
1024 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
1026 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
1027 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
1032 int dvb_set_isdbs (dvb_device_t *d, uint64_t freq_Hz, uint16_t ts_id)
1034 uint32_t freq = freq_Hz / 1000;
1036 if (dvb_find_frontend (d, ISDB_S))
1038 return dvb_set_props (d, 4, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBS,
1039 DTV_FREQUENCY, freq,
1050 static int dvb_set_isdbt_layer (dvb_device_t *d, unsigned num,
1051 const isdbt_layer_t *l)
1053 uint32_t mod = dvb_parse_modulation (l->modulation, QAM_AUTO);
1054 uint32_t fec = dvb_parse_fec (l->code_rate);
1055 uint32_t count = l->segment_count;
1056 uint32_t ti = l->time_interleaving;
1058 num *= DTV_ISDBT_LAYERB_FEC - DTV_ISDBT_LAYERA_FEC;
1060 return dvb_set_props (d, 5, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
1061 DTV_ISDBT_LAYERA_FEC + num, fec,
1062 DTV_ISDBT_LAYERA_MODULATION + num, mod,
1063 DTV_ISDBT_LAYERA_SEGMENT_COUNT + num, count,
1064 DTV_ISDBT_LAYERA_TIME_INTERLEAVING + num, ti);
1067 int dvb_set_isdbt (dvb_device_t *d, uint32_t freq, uint32_t bandwidth,
1068 int transmit_mode, uint32_t guard,
1069 const isdbt_layer_t layers[3])
1071 bandwidth = dvb_parse_bandwidth (bandwidth);
1072 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
1073 guard = dvb_parse_guard (guard);
1075 if (dvb_find_frontend (d, ISDB_T))
1077 if (dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
1078 DTV_FREQUENCY, freq, DTV_BANDWIDTH_HZ, bandwidth,
1079 DTV_GUARD_INTERVAL, guard))
1081 for (unsigned i = 0; i < 3; i++)
1082 if (dvb_set_isdbt_layer (d, i, layers + i))
1089 int dvb_set_atsc (dvb_device_t *d, uint32_t freq, const char *modstr)
1091 unsigned mod = dvb_parse_modulation (modstr, VSB_8);
1093 if (dvb_find_frontend (d, ATSC))
1095 return dvb_set_props (d, 4, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ATSC,
1096 DTV_FREQUENCY, freq, DTV_MODULATION, mod);
1099 int dvb_set_cqam (dvb_device_t *d, uint32_t freq, const char *modstr)
1101 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
1103 if (dvb_find_frontend (d, CQAM))
1105 return dvb_set_props (d, 4, DTV_CLEAR, 0,
1106 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_B,
1107 DTV_FREQUENCY, freq, DTV_MODULATION, mod);