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)))
53 # error Linux DVB kernel headers version 2.6.28 or later required.
56 /** Opens the device directory for the specified DVB adapter */
57 static int dvb_open_adapter (uint8_t adapter)
61 snprintf (dir, sizeof (dir), "/dev/dvb/adapter%"PRIu8, adapter);
62 return vlc_open (dir, O_SEARCH|O_DIRECTORY);
65 /** Opens the DVB device node of the specified type */
66 static int dvb_open_node (int dir, const char *type, unsigned dev, int flags)
69 char path[strlen (type) + 4];
71 snprintf (path, sizeof (path), "%s%u", type, dev);
72 fd = vlc_openat (dir, path, flags);
74 fcntl (fd, F_SETFL, fcntl (fd, F_GETFL) | O_NONBLOCK);
84 static int icmp (const void *a, const void *b)
86 int key = (intptr_t)a;
87 const dvb_int_map_t *entry = b;
88 return key - entry->vlc;
91 /** Maps a VLC config integer to a Linux DVB enum value */
92 static int dvb_parse_int (int i, const dvb_int_map_t *map, size_t n, int def)
94 const void *k = (const void *)(intptr_t)i;
95 const dvb_int_map_t *p = bsearch (k, map, n, sizeof (*map), icmp);
96 return (p != NULL) ? p->linux_ : def;
105 static int scmp (const void *a, const void *b)
108 dvb_str_map_t *entry = b;
109 return strcmp (key, entry->vlc);
112 /** Maps a VLC config string to a Linux DVB enum value */
113 static int dvb_parse_str (const char *str, const dvb_str_map_t *map, size_t n,
118 const dvb_str_map_t *p = bsearch (str, map, n, sizeof (*map), scmp);
125 /*** Modulations ***/
126 static int dvb_parse_modulation (const char *str, int def)
128 static const dvb_str_map_t mods[] =
130 { "128QAM", QAM_128 },
131 { "16APSK", APSK_16 },
134 { "256QAM", QAM_256 },
135 { "32APSK", APSK_32 },
144 return dvb_parse_str (str, mods, sizeof (mods) / sizeof (*mods), def);
147 static int dvb_parse_fec (uint32_t fec)
149 static const dvb_int_map_t rates[] =
152 { VLC_FEC(1,2), FEC_1_2 },
155 { VLC_FEC(2,3), FEC_2_3 },
156 { VLC_FEC(3,4), FEC_3_4 },
157 { VLC_FEC(3,5), FEC_3_5 },
158 { VLC_FEC(4,5), FEC_4_5 },
159 { VLC_FEC(5,6), FEC_5_6 },
160 { VLC_FEC(6,7), FEC_6_7 },
161 { VLC_FEC(7,8), FEC_7_8 },
162 { VLC_FEC(8,9), FEC_8_9 },
163 { VLC_FEC(9,10), FEC_9_10 },
164 { VLC_FEC_AUTO, FEC_AUTO },
166 return dvb_parse_int (fec, rates, sizeof (rates) / sizeof (*rates),
178 # define MAX_PIDS 256
188 struct dvb_frontend_info info;
190 //size_t buffer_size;
194 * Opens the DVB tuner
196 dvb_device_t *dvb_open (vlc_object_t *obj)
198 dvb_device_t *d = malloc (sizeof (*d));
199 if (unlikely(d == NULL))
204 uint8_t adapter = var_InheritInteger (obj, "dvb-adapter");
206 d->dir = dvb_open_adapter (adapter);
209 msg_Err (obj, "cannot access adapter %"PRIu8": %m", adapter);
217 d->budget = var_InheritBool (obj, "dvb-budget-mode");
223 d->demux = dvb_open_node (d->dir, "demux", 0, O_RDONLY);
226 msg_Err (obj, "cannot access demultiplexer: %m");
232 if (ioctl (d->demux, DMX_SET_BUFFER_SIZE, 1 << 20) < 0)
233 msg_Warn (obj, "cannot expand demultiplexing buffer: %m");
235 /* We need to filter at least one PID. The tap for TS demultiplexing
236 * cannot be configured otherwise. So add the PAT. */
237 struct dmx_pes_filter_params param;
239 param.pid = d->budget ? 0x2000 : 0x000;
240 param.input = DMX_IN_FRONTEND;
241 param.output = DMX_OUT_TSDEMUX_TAP;
242 param.pes_type = DMX_PES_OTHER;
243 param.flags = DMX_IMMEDIATE_START;
244 if (ioctl (d->demux, DMX_SET_PES_FILTER, ¶m) < 0)
246 msg_Err (obj, "cannot setup TS demultiplexer: %m");
253 for (size_t i = 0; i < MAX_PIDS; i++)
254 d->pids[i].pid = d->pids[i].fd = -1;
255 d->demux = dvb_open_node (d->dir, "dvr", 0, O_RDONLY);
258 msg_Err (obj, "cannot access DVR: %m");
267 int ca = dvb_open_node (d->dir, "ca", 0, O_RDWR);
270 d->cam = en50221_Init (obj, ca);
275 msg_Dbg (obj, "conditional access module not available (%m)");
284 void dvb_close (dvb_device_t *d)
289 for (size_t i = 0; i < MAX_PIDS; i++)
290 if (d->pids[i].fd != -1)
291 close (d->pids[i].fd);
296 en50221_End (d->cam);
298 if (d->frontend != -1)
306 * Reads TS data from the tuner.
307 * @return number of bytes read, 0 on EOF, -1 if no data (yet).
309 ssize_t dvb_read (dvb_device_t *d, void *buf, size_t len)
311 struct pollfd ufd[2];
316 en50221_Poll (d->cam);
319 ufd[0].fd = d->demux;
320 ufd[0].events = POLLIN;
321 if (d->frontend != -1)
323 ufd[1].fd = d->frontend;
324 ufd[1].events = POLLIN;
330 if (poll (ufd, n, 500 /* FIXME */) < 0)
333 if (d->frontend != -1 && ufd[1].revents)
335 struct dvb_frontend_event ev;
337 if (ioctl (d->frontend, FE_GET_EVENT, &ev) < 0)
339 if (errno == EOVERFLOW)
341 msg_Err (d->obj, "cannot dequeue events fast enough!");
344 msg_Err (d->obj, "cannot dequeue frontend event: %m");
348 msg_Dbg (d->obj, "frontend status: 0x%02X", (unsigned)ev.status);
353 ssize_t val = read (d->demux, buf, len);
354 if (val == -1 && (errno != EAGAIN && errno != EINTR))
356 if (errno == EOVERFLOW)
358 msg_Err (d->obj, "cannot demux data fast enough!");
361 msg_Err (d->obj, "cannot demux: %m");
370 int dvb_add_pid (dvb_device_t *d, uint16_t pid)
375 if (pid == 0 || ioctl (d->demux, DMX_ADD_PID, &pid) >= 0)
378 for (size_t i = 0; i < MAX_PIDS; i++)
380 if (d->pids[i].pid == pid)
382 if (d->pids[i].fd != -1)
385 int fd = dvb_open_node (d->dir, "demux", 0, O_RDONLY);
389 /* We need to filter at least one PID. The tap for TS demultiplexing
390 * cannot be configured otherwise. So add the PAT. */
391 struct dmx_pes_filter_params param;
394 param.input = DMX_IN_FRONTEND;
395 param.output = DMX_OUT_TS_TAP;
396 param.pes_type = DMX_PES_OTHER;
397 param.flags = DMX_IMMEDIATE_START;
398 if (ioctl (fd, DMX_SET_PES_FILTER, ¶m) < 0)
404 d->pids[i].pid = pid;
410 msg_Err (d->obj, "cannot add PID 0x%04"PRIu16": %m", pid);
414 void dvb_remove_pid (dvb_device_t *d, uint16_t pid)
420 ioctl (d->demux, DMX_REMOVE_PID, &pid);
422 for (size_t i = 0; i < MAX_PIDS; i++)
424 if (d->pids[i].pid == pid)
426 close (d->pids[i].fd);
427 d->pids[i].pid = d->pids[i].fd = -1;
434 /** Finds a frontend of the correct type */
435 static int dvb_find_frontend (dvb_device_t *d, fe_type_t type, fe_caps_t caps)
437 if (d->frontend != -1)
439 if (d->info.type == type || (d->info.caps & caps) == caps)
440 return 0; /* already got an adequate frontend */
446 for (unsigned n = 0; n < 256; n++)
448 int fd = dvb_open_node (d->dir, "frontend", n, O_RDWR);
452 break; /* all frontends already enumerated */
453 msg_Err (d->obj, "cannot access frontend %u: %m", n);
457 if (ioctl (fd, FE_GET_INFO, &d->info) < 0)
459 msg_Err (d->obj, "cannot get frontend %u info: %m", n);
463 msg_Dbg (d->obj, "probing frontend %u: %s", n, d->info.name);
464 msg_Dbg (d->obj, " type %u, capabilities 0x%08X", d->info.type,
466 msg_Dbg (d->obj, " frequencies %10"PRIu32" to %10"PRIu32,
467 d->info.frequency_min, d->info.frequency_max);
468 msg_Dbg (d->obj, " (%"PRIu32" tolerance, %"PRIu32" per step)",
469 d->info.frequency_tolerance, d->info.frequency_stepsize);
470 msg_Dbg (d->obj, " bauds rates %10"PRIu32" to %10"PRIu32,
471 d->info.symbol_rate_min, d->info.symbol_rate_max);
472 msg_Dbg (d->obj, " (%"PRIu32" tolerance)",
473 d->info.symbol_rate_tolerance);
475 if (d->info.type != type || (d->info.caps & caps) != caps)
477 msg_Dbg (d->obj, "skipping frontend %u: wrong type", n);
481 msg_Dbg (d->obj, "selected frontend %u", n);
489 msg_Err (d->obj, "no suitable frontend found");
494 * Detects supported delivery systems.
495 * @return a bit mask of supported systems (zero on failure)
497 unsigned dvb_enum_systems (dvb_device_t *d)
499 unsigned systems = 0;
501 for (unsigned n = 0; n < 256; n++)
503 int fd = dvb_open_node (d->dir, "frontend", n, O_RDWR);
507 break; /* all frontends already enumerated */
508 msg_Err (d->obj, "cannot access frontend %u; %m", n);
512 struct dvb_frontend_info info;
513 if (ioctl (fd, FE_GET_INFO, &info) < 0)
515 msg_Err (d->obj, "cannot get frontend %u info: %m", n);
521 /* Linux DVB lacks detection for non-DVB/non-ATSC demods */
522 static const unsigned types[] = {
529 if (((unsigned)info.type) >= sizeof (types) / sizeof (types[0]))
531 msg_Err (d->obj, "unknown frontend type %u", info.type);
535 unsigned sys = types[info.type];
536 if (info.caps & FE_CAN_2G_MODULATION)
537 sys |= sys << 1; /* DVB_foo -> DVB_foo|DVB_foo2 */
543 float dvb_get_signal_strength (dvb_device_t *d)
547 if (ioctl (d->frontend, FE_READ_SIGNAL_STRENGTH, &strength) < 0)
549 return strength / 65535.;
552 float dvb_get_snr (dvb_device_t *d)
556 if (ioctl (d->frontend, FE_READ_SNR, &snr) < 0)
562 void dvb_set_ca_pmt (dvb_device_t *d, struct dvbpsi_pmt_s *pmt)
565 en50221_SetCAPMT (d->cam, pmt);
569 static int dvb_vset_props (dvb_device_t *d, size_t n, va_list ap)
571 assert (n <= DTV_IOCTL_MAX_MSGS);
573 struct dtv_property buf[n], *prop = buf;
574 struct dtv_properties props = { .num = n, .props = buf };
576 memset (prop, 0, sizeof (prop));
580 prop->cmd = va_arg (ap, uint32_t);
581 prop->u.data = va_arg (ap, uint32_t);
582 msg_Dbg (d->obj, "setting property %2"PRIu32" to %"PRIu32,
583 prop->cmd, prop->u.data);
588 if (ioctl (d->frontend, FE_SET_PROPERTY, &props) < 0)
590 msg_Err (d->obj, "cannot set frontend tuning parameters: %m");
596 static int dvb_set_props (dvb_device_t *d, size_t n, ...)
602 ret = dvb_vset_props (d, n, ap);
607 static int dvb_set_prop (dvb_device_t *d, uint32_t prop, uint32_t val)
609 return dvb_set_props (d, 1, prop, val);
612 int dvb_set_inversion (dvb_device_t *d, int v)
616 case 0: v = INVERSION_OFF; break;
617 case 1: v = INVERSION_ON; break;
618 default: v = INVERSION_AUTO; break;
620 return dvb_set_prop (d, DTV_INVERSION, v);
623 int dvb_tune (dvb_device_t *d)
625 return dvb_set_prop (d, DTV_TUNE, 0 /* dummy */);
630 int dvb_set_dvbc (dvb_device_t *d, uint32_t freq, const char *modstr,
631 uint32_t srate, uint32_t fec)
633 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
634 fec = dvb_parse_fec (fec);
636 if (dvb_find_frontend (d, FE_QAM, FE_IS_STUPID))
638 return dvb_set_props (d, 6, DTV_CLEAR, 0,
640 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_A,
642 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
644 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
645 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
650 static unsigned dvb_parse_polarization (char pol)
652 static const dvb_int_map_t tab[5] = {
653 { 0, SEC_VOLTAGE_OFF },
654 { 'H', SEC_VOLTAGE_18 },
655 { 'L', SEC_VOLTAGE_18 },
656 { 'R', SEC_VOLTAGE_13 },
657 { 'V', SEC_VOLTAGE_13 },
659 return dvb_parse_int (pol, tab, 5, SEC_VOLTAGE_OFF);
662 int dvb_set_sec (dvb_device_t *d, uint64_t freq_Hz, char pol,
663 uint32_t lowf, uint32_t highf, uint32_t switchf)
665 uint32_t freq = freq_Hz / 1000;
667 /* Always try to configure high voltage, but only warn on enable failure */
668 int val = var_InheritBool (d->obj, "dvb-high-voltage");
669 if (ioctl (d->frontend, FE_ENABLE_HIGH_LNB_VOLTAGE, &val) < 0 && val)
670 msg_Err (d->obj, "cannot enable high LNB voltage: %m");
672 /* Windows BDA exposes a higher-level API covering LNB oscillators.
673 * So lets pretend this is platform-specific stuff and do it here. */
675 { /* Default oscillator frequencies */
678 uint16_t min, max, low, high;
680 { /* min max low high */
681 { 10700, 13250, 9750, 10600 }, /* Ku band */
682 { 4500, 4800, 5950, 0 }, /* C band (high) */
683 { 3400, 4200, 5150, 0 }, /* C band (low) */
684 { 2500, 2700, 3650, 0 }, /* S band */
685 { 950, 2150, 0, 0 }, /* adjusted IF (L band) */
687 uint_fast16_t mHz = freq / 1000;
689 for (size_t i = 0; i < sizeof (tab) / sizeof (tab[0]); i++)
690 if (mHz >= tab[i].min && mHz <= tab[i].max)
692 lowf = tab[i].low * 1000;
693 highf = tab[i].high * 1000;
697 msg_Err (d->obj, "no known band for frequency %u kHz", freq);
699 msg_Dbg (d->obj, "selected LNB low: %u kHz, LNB high: %u kHz",
703 /* Use high oscillator frequency? */
704 bool high = highf != 0 && freq > switchf;
706 freq -= high ? highf : lowf;
707 if ((int32_t)freq < 0)
709 assert (freq < 0x7fffffff);
712 switch (var_InheritInteger (d->obj, "dvb-tone"))
714 case 0: tone = SEC_TONE_OFF; break;
715 case 1: tone = SEC_TONE_ON; break;
716 default: tone = high ? SEC_TONE_ON : SEC_TONE_OFF;
719 /*** LNB selection / DiSEqC ***/
720 unsigned voltage = dvb_parse_polarization (pol);
721 if (dvb_set_props (d, 2, DTV_TONE, SEC_TONE_OFF, DTV_VOLTAGE, voltage))
724 unsigned satno = var_InheritInteger (d->obj, "dvb-satno");
728 #undef msleep /* we know what we are doing! */
729 struct dvb_diseqc_master_cmd cmd;
731 satno = (satno - 1) & 3;
732 cmd.msg[0] = 0xE0; /* framing: master, no reply, 1st TX */
733 cmd.msg[1] = 0x10; /* address: all LNB/switch */
734 cmd.msg[2] = 0x38; /* command: Write Port Group 0 */
735 cmd.msg[3] = 0xF0 /* data[0]: clear all bits */
736 | (satno << 2) /* LNB (A, B, C or D) */
737 | ((voltage == SEC_VOLTAGE_18) << 1) /* polarization */
738 | (tone == SEC_TONE_ON); /* option */
739 cmd.msg[4] = cmd.msg[5] = 0; /* unused */
740 msleep (15000); /* wait 15 ms before DiSEqC command */
741 if (ioctl (d->frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd) < 0)
743 msg_Err (d->obj, "cannot send DiSEqC command: %m");
746 msleep (54000 + 15000);
750 if (ioctl (d->frontend, FE_DISEQC_SEND_BURST,
751 satno ? SEC_MINI_B : SEC_MINI_A) < 0)
753 msg_Err (d->obj, "cannot send Mini-DiSEqC tone burst: %m");
759 /* Continuous tone (to select high oscillator frequency) */
760 return dvb_set_props (d, 2, DTV_FREQUENCY, freq, DTV_TONE, tone);
763 int dvb_set_dvbs (dvb_device_t *d, uint64_t freq_Hz,
764 uint32_t srate, uint32_t fec)
766 uint32_t freq = freq_Hz / 1000;
767 fec = dvb_parse_fec (fec);
769 if (dvb_find_frontend (d, FE_QPSK, FE_IS_STUPID))
771 return dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS,
772 DTV_FREQUENCY, freq, DTV_SYMBOL_RATE, srate,
776 int dvb_set_dvbs2 (dvb_device_t *d, uint64_t freq_Hz, const char *modstr,
777 uint32_t srate, uint32_t fec, int pilot, int rolloff)
779 uint32_t freq = freq_Hz / 1000;
780 unsigned mod = dvb_parse_modulation (modstr, QPSK);
781 fec = dvb_parse_fec (fec);
785 case 0: pilot = PILOT_OFF; break;
786 case 1: pilot = PILOT_ON; break;
787 default: pilot = PILOT_AUTO; break;
792 case 20: rolloff = ROLLOFF_20; break;
793 case 25: rolloff = ROLLOFF_25; break;
794 case 35: rolloff = ROLLOFF_35; break;
795 default: rolloff = PILOT_AUTO; break;
798 if (dvb_find_frontend (d, FE_QPSK, FE_CAN_2G_MODULATION))
800 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS2,
801 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
802 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec,
803 DTV_PILOT, pilot, DTV_ROLLOFF, rolloff);
808 static uint32_t dvb_parse_bandwidth (uint32_t i)
813 case 2: return 1712000;
814 default: return i * 1000000;
818 static int dvb_parse_transmit_mode (int i)
820 static const dvb_int_map_t tab[] = {
821 { -1, TRANSMISSION_MODE_AUTO },
823 { 1, TRANSMISSION_MODE_1K },
825 { 2, TRANSMISSION_MODE_2K },
827 { 4, TRANSMISSION_MODE_4K },
829 { 8, TRANSMISSION_MODE_8K },
831 { 16, TRANSMISSION_MODE_16K },
832 { 32, TRANSMISSION_MODE_32K },
835 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
836 TRANSMISSION_MODE_AUTO);
839 static int dvb_parse_guard (uint32_t guard)
841 static const dvb_int_map_t tab[] = {
842 { VLC_GUARD(1,4), GUARD_INTERVAL_1_4 },
843 { VLC_GUARD(1,8), GUARD_INTERVAL_1_8 },
844 { VLC_GUARD(1,16), GUARD_INTERVAL_1_16 },
845 { VLC_GUARD(1,32), GUARD_INTERVAL_1_32 },
847 { VLC_GUARD(1,128), GUARD_INTERVAL_1_128 },
848 { VLC_GUARD(19,128), GUARD_INTERVAL_19_128 },
849 { VLC_GUARD(19,256), GUARD_INTERVAL_19_256 },
851 { VLC_GUARD_AUTO, GUARD_INTERVAL_AUTO },
853 return dvb_parse_int (guard, tab, sizeof (tab) / sizeof (*tab),
854 GUARD_INTERVAL_AUTO);
857 static int dvb_parse_hierarchy (int i)
859 static const dvb_int_map_t tab[] = {
860 { HIERARCHY_AUTO, -1 },
861 { HIERARCHY_NONE, 0 },
866 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
870 int dvb_set_dvbt (dvb_device_t *d, uint32_t freq, const char *modstr,
871 uint32_t fec_hp, uint32_t fec_lp, uint32_t bandwidth,
872 int transmit_mode, uint32_t guard, int hierarchy)
874 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
875 fec_hp = dvb_parse_fec (fec_hp);
876 fec_lp = dvb_parse_fec (fec_lp);
877 bandwidth = dvb_parse_bandwidth (bandwidth);
878 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
879 guard = dvb_parse_guard (guard);
880 hierarchy = dvb_parse_hierarchy (hierarchy);
882 if (dvb_find_frontend (d, FE_OFDM, FE_IS_STUPID))
884 return dvb_set_props (d, 10, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT,
885 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
886 DTV_CODE_RATE_HP, fec_hp, DTV_CODE_RATE_LP, fec_lp,
887 DTV_BANDWIDTH_HZ, bandwidth,
888 DTV_TRANSMISSION_MODE, transmit_mode,
889 DTV_GUARD_INTERVAL, guard,
890 DTV_HIERARCHY, hierarchy);
893 int dvb_set_dvbt2 (dvb_device_t *d, uint32_t freq, const char *modstr,
894 uint32_t fec, uint32_t bandwidth,
895 int transmit_mode, uint32_t guard)
898 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
899 fec = dvb_parse_fec (fec);
900 bandwidth = dvb_parse_bandwidth (bandwidth);
901 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
902 guard = dvb_parse_guard (guard);
904 if (dvb_find_frontend (d, FE_OFDM, FE_CAN_2G_MODULATION))
906 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT2,
907 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
908 DTV_INNER_FEC, fec, DTV_BANDWIDTH_HZ, bandwidth,
909 DTV_TRANSMISSION_MODE, transmit_mode,
910 DTV_GUARD_INTERVAL, guard);
912 # warning DVB-T2 needs Linux DVB version 5.3 or later.
913 msg_Err (d->obj, "DVB-T2 support not compiled-in");
914 (void) freq; (void) modstr; (void) fec; (void) bandwidth;
915 (void) transmit_mode; (void) guard;
922 int dvb_set_isdbc (dvb_device_t *d, uint32_t freq, const char *modstr,
923 uint32_t srate, uint32_t fec)
925 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
926 fec = dvb_parse_fec (fec);
928 if (dvb_find_frontend (d, FE_QAM, FE_IS_STUPID))
930 return dvb_set_props (d, 6, DTV_CLEAR, 0,
932 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_C,
934 # warning ISDB-C might need Linux DVB version 5.5 or later.
935 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
937 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
938 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
943 int dvb_set_isdbs (dvb_device_t *d, uint64_t freq_Hz, uint16_t ts_id)
946 uint32_t freq = freq_Hz / 1000;
948 if (dvb_find_frontend (d, FE_QPSK, FE_IS_STUPID))
950 return dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBS,
952 DTV_ISDBS_TS_ID, (uint32_t)ts_id);
954 # warning ISDB-S needs Linux DVB version 5.1 or later.
955 msg_Err (d->obj, "ISDB-S support not compiled-in");
956 (void) freq_Hz; (void) ts_id;
964 static int dvb_set_isdbt_layer (dvb_device_t *d, unsigned num,
965 const isdbt_layer_t *l)
967 uint32_t mod = dvb_parse_modulation (l->modulation, QAM_AUTO);
968 uint32_t fec = dvb_parse_fec (l->code_rate);
969 uint32_t count = l->segment_count;
970 uint32_t ti = l->time_interleaving;
972 num *= DTV_ISDBT_LAYERB_FEC - DTV_ISDBT_LAYERA_FEC;
974 return dvb_set_props (d, 5, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
975 DTV_ISDBT_LAYERA_FEC + num, fec,
976 DTV_ISDBT_LAYERA_MODULATION + num, mod,
977 DTV_ISDBT_LAYERA_SEGMENT_COUNT + num, count,
978 DTV_ISDBT_LAYERA_TIME_INTERLEAVING + num, ti);
982 int dvb_set_isdbt (dvb_device_t *d, uint32_t freq, uint32_t bandwidth,
983 int transmit_mode, uint32_t guard,
984 const isdbt_layer_t layers[3])
987 bandwidth = dvb_parse_bandwidth (bandwidth);
988 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
989 guard = dvb_parse_guard (guard);
991 if (dvb_find_frontend (d, FE_OFDM, FE_IS_STUPID))
993 if (dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
994 DTV_FREQUENCY, freq, DTV_BANDWIDTH_HZ, bandwidth,
995 DTV_GUARD_INTERVAL, guard))
997 for (unsigned i = 0; i < 3; i++)
998 if (dvb_set_isdbt_layer (d, i, layers + i))
1002 # warning ISDB-T needs Linux DVB version 5.1 or later.
1003 msg_Err (d->obj, "ISDB-T support not compiled-in");
1004 (void) freq; (void) bandwidth; (void) transmit_mode; (void) guard;
1012 int dvb_set_atsc (dvb_device_t *d, uint32_t freq, const char *modstr)
1014 unsigned mod = dvb_parse_modulation (modstr, VSB_8);
1016 if (dvb_find_frontend (d, FE_ATSC, FE_IS_STUPID))
1018 return dvb_set_props (d, 4, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ATSC,
1019 DTV_FREQUENCY, freq, DTV_MODULATION, mod);
1022 int dvb_set_cqam (dvb_device_t *d, uint32_t freq, const char *modstr)
1024 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
1026 if (dvb_find_frontend (d, FE_QAM, FE_IS_STUPID))
1028 return dvb_set_props (d, 4, DTV_CLEAR, 0,
1029 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_B,
1030 DTV_FREQUENCY, freq, DTV_MODULATION, mod);