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 /** Opens the device directory for the specified DVB adapter */
54 static int dvb_open_adapter (uint8_t adapter)
58 snprintf (dir, sizeof (dir), "/dev/dvb/adapter%"PRIu8, adapter);
59 return vlc_open (dir, O_SEARCH|O_DIRECTORY);
62 /** Opens the DVB device node of the specified type */
63 static int dvb_open_node (int dir, const char *type, unsigned dev, int flags)
66 char path[strlen (type) + 4];
68 snprintf (path, sizeof (path), "%s%u", type, dev);
69 fd = vlc_openat (dir, path, flags);
71 fcntl (fd, F_SETFL, fcntl (fd, F_GETFL) | O_NONBLOCK);
81 static int icmp (const void *a, const void *b)
83 int key = (intptr_t)a;
84 const dvb_int_map_t *entry = b;
85 return key - entry->vlc;
88 /** Maps a VLC config integer to a Linux DVB enum value */
89 static int dvb_parse_int (int i, const dvb_int_map_t *map, size_t n, int def)
91 const void *k = (const void *)(intptr_t)i;
92 const dvb_int_map_t *p = bsearch (k, map, n, sizeof (*map), icmp);
93 return (p != NULL) ? p->linux_ : def;
102 static int scmp (const void *a, const void *b)
105 dvb_str_map_t *entry = b;
106 return strcmp (key, entry->vlc);
109 /** Maps a VLC config string to a Linux DVB enum value */
110 static int dvb_parse_str (const char *str, const dvb_str_map_t *map, size_t n,
115 const dvb_str_map_t *p = bsearch (str, map, n, sizeof (*map), scmp);
122 /*** Modulations ***/
123 static int dvb_parse_modulation (const char *str, int def)
125 static const dvb_str_map_t mods[] =
127 { "128QAM", QAM_128 },
128 { "16APSK", APSK_16 },
131 { "256QAM", QAM_256 },
132 { "32APSK", APSK_32 },
141 return dvb_parse_str (str, mods, sizeof (mods) / sizeof (*mods), def);
144 static int dvb_parse_fec (uint32_t fec)
146 static const dvb_int_map_t rates[] =
149 { VLC_FEC(1,2), FEC_1_2 },
152 { VLC_FEC(2,3), FEC_2_3 },
153 { VLC_FEC(3,4), FEC_3_4 },
154 { VLC_FEC(3,5), FEC_3_5 },
155 { VLC_FEC(4,5), FEC_4_5 },
156 { VLC_FEC(5,6), FEC_5_6 },
157 { VLC_FEC(6,7), FEC_6_7 },
158 { VLC_FEC(7,8), FEC_7_8 },
159 { VLC_FEC(8,9), FEC_8_9 },
160 { VLC_FEC(9,10), FEC_9_10 },
161 { VLC_FEC_AUTO, FEC_AUTO },
163 return dvb_parse_int (fec, rates, sizeof (rates) / sizeof (*rates),
175 # define MAX_PIDS 256
187 //size_t buffer_size;
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");
203 d->dir = dvb_open_adapter (adapter);
206 msg_Err (obj, "cannot access adapter %"PRIu8": %m", adapter);
214 d->budget = var_InheritBool (obj, "dvb-budget-mode");
220 d->demux = dvb_open_node (d->dir, "demux", 0, O_RDONLY);
223 msg_Err (obj, "cannot access demultiplexer: %m");
229 if (ioctl (d->demux, DMX_SET_BUFFER_SIZE, 1 << 20) < 0)
230 msg_Warn (obj, "cannot expand demultiplexing buffer: %m");
232 /* We need to filter at least one PID. The tap for TS demultiplexing
233 * cannot be configured otherwise. So add the PAT. */
234 struct dmx_pes_filter_params param;
236 param.pid = d->budget ? 0x2000 : 0x000;
237 param.input = DMX_IN_FRONTEND;
238 param.output = DMX_OUT_TSDEMUX_TAP;
239 param.pes_type = DMX_PES_OTHER;
240 param.flags = DMX_IMMEDIATE_START;
241 if (ioctl (d->demux, DMX_SET_PES_FILTER, ¶m) < 0)
243 msg_Err (obj, "cannot setup TS demultiplexer: %m");
250 for (size_t i = 0; i < MAX_PIDS; i++)
251 d->pids[i].pid = d->pids[i].fd = -1;
252 d->demux = dvb_open_node (d->dir, "dvr", 0, O_RDONLY);
255 msg_Err (obj, "cannot access DVR: %m");
264 int ca = dvb_open_node (d->dir, "ca", 0, O_RDWR);
267 d->cam = en50221_Init (obj, ca);
272 msg_Dbg (obj, "conditional access module not available (%m)");
281 void dvb_close (dvb_device_t *d)
286 for (size_t i = 0; i < MAX_PIDS; i++)
287 if (d->pids[i].fd != -1)
288 close (d->pids[i].fd);
293 en50221_End (d->cam);
295 if (d->frontend != -1)
303 * Reads TS data from the tuner.
304 * @return number of bytes read, 0 on EOF, -1 if no data (yet).
306 ssize_t dvb_read (dvb_device_t *d, void *buf, size_t len)
308 struct pollfd ufd[2];
313 en50221_Poll (d->cam);
316 ufd[0].fd = d->demux;
317 ufd[0].events = POLLIN;
318 if (d->frontend != -1)
320 ufd[1].fd = d->frontend;
321 ufd[1].events = POLLIN;
327 if (poll (ufd, n, 500 /* FIXME */) < 0)
330 if (d->frontend != -1 && ufd[1].revents)
332 struct dvb_frontend_event ev;
334 if (ioctl (d->frontend, FE_GET_EVENT, &ev) < 0)
336 if (errno == EOVERFLOW)
338 msg_Err (d->obj, "cannot dequeue events fast enough!");
341 msg_Err (d->obj, "cannot dequeue frontend event: %m");
345 msg_Dbg (d->obj, "frontend status: 0x%02X", (unsigned)ev.status);
350 ssize_t val = read (d->demux, buf, len);
351 if (val == -1 && (errno != EAGAIN && errno != EINTR))
353 if (errno == EOVERFLOW)
355 msg_Err (d->obj, "cannot demux data fast enough!");
358 msg_Err (d->obj, "cannot demux: %m");
367 int dvb_add_pid (dvb_device_t *d, uint16_t pid)
372 if (pid == 0 || ioctl (d->demux, DMX_ADD_PID, &pid) >= 0)
375 for (size_t i = 0; i < MAX_PIDS; i++)
377 if (d->pids[i].pid == pid)
379 if (d->pids[i].fd != -1)
382 int fd = dvb_open_node (d->dir, "demux", 0, O_RDONLY);
386 /* We need to filter at least one PID. The tap for TS demultiplexing
387 * cannot be configured otherwise. So add the PAT. */
388 struct dmx_pes_filter_params param;
391 param.input = DMX_IN_FRONTEND;
392 param.output = DMX_OUT_TS_TAP;
393 param.pes_type = DMX_PES_OTHER;
394 param.flags = DMX_IMMEDIATE_START;
395 if (ioctl (fd, DMX_SET_PES_FILTER, ¶m) < 0)
401 d->pids[i].pid = pid;
407 msg_Err (d->obj, "cannot add PID 0x%04"PRIu16": %m", pid);
411 void dvb_remove_pid (dvb_device_t *d, uint16_t pid)
417 ioctl (d->demux, DMX_REMOVE_PID, &pid);
419 for (size_t i = 0; i < MAX_PIDS; i++)
421 if (d->pids[i].pid == pid)
423 close (d->pids[i].fd);
424 d->pids[i].pid = d->pids[i].fd = -1;
431 /** Enumerates the systems supported by one frontend */
432 static unsigned dvb_probe_frontend (dvb_device_t *d, int fd)
435 struct dtv_property prop[2] = {
436 { .cmd = DTV_API_VERSION },
437 { .cmd = DTV_ENUM_DELSYS },
439 struct dtv_properties props = {
444 if (ioctl (fd, FE_GET_PROPERTY, &props) < 0)
446 msg_Err (d->obj, "cannot enumerate frontend systems: %m");
450 static const unsigned systab[] = {
452 [SYS_DVBC_ANNEX_A] = DVB_C,
453 [SYS_DVBC_ANNEX_B] = CQAM,
457 [SYS_DVBS2] = DVB_S2,
459 [SYS_ISDBT] = ISDB_T,
460 [SYS_ISDBS] = ISDB_S,
461 [SYS_ISDBC] = ISDB_C, // no drivers exist (as of 3.3-rc6)
467 [SYS_DVBT2] = DVB_T2,
469 [SYS_DVBC_ANNEX_C] = ISDB_C, // another name for ISDB-C?
471 unsigned systems = 0;
473 msg_Dbg (d->obj, "probing frontend (kernel API v%u.%u, user API v%u.%u)",
474 prop[0].u.data >> 8, prop[0].u.data & 0xFF,
475 DVB_API_VERSION, DVB_API_VERSION_MINOR);
477 for (size_t i = 0; i < prop[1].u.buffer.len; i++)
479 unsigned sys = prop[1].u.buffer.data[i];
481 if (sys >= (sizeof (systab) / sizeof (systab[0])) || !systab[sys])
483 msg_Warn (d->obj, "unknown delivery system %u", sys);
486 msg_Dbg (d->obj, " system %u", sys);
487 systems |= systab[sys];
494 struct dtv_property prop[1] = {
495 { .cmd = DTV_API_VERSION },
497 struct dtv_properties props = {
501 unsigned systems = 0;
503 if (ioctl (fd, FE_GET_PROPERTY, &props) < 0)
505 msg_Err (d->obj, "unsupported kernel DVB version 3 or older (%m)");
509 msg_Dbg (d->obj, "probing frontend (kernel API v%u.%u, user API v%u.%u)",
510 prop[0].u.data >> 8, prop[0].u.data & 0xFF,
511 DVB_API_VERSION, DVB_API_VERSION_MINOR);
513 /* Some delivery systems cannot be detected without the DVB API v5.5.
514 * To run correctly on recent kernels (Linux >= 3.3),
515 * VLC needs to be compiled with up-to-date kernel headers. */
516 if ((prop[0].u.data >> 8) > 5
517 || ((prop[0].u.data >> 8) == 5 && (prop[0].u.data & 0xFF) >= 5))
518 msg_Err (d->obj, "obsolete user API version running on a new kernel");
519 msg_Info (d->obj, "please recompile "PACKAGE_NAME" "PACKAGE_VERSION);
521 struct dvb_frontend_info info;
522 if (ioctl (fd, FE_GET_INFO, &info) < 0)
524 msg_Err (d->obj, "cannot get frontend info: %m");
527 msg_Dbg (d->obj, " name %s", info.name);
528 msg_Dbg (d->obj, " type %u, capabilities 0x%08X", info.type, info.caps);
529 msg_Dbg (d->obj, " frequencies %10"PRIu32" to %10"PRIu32,
530 info.frequency_min, info.frequency_max);
531 msg_Dbg (d->obj, " (%"PRIu32" tolerance, %"PRIu32" per step)",
532 info.frequency_tolerance, info.frequency_stepsize);
533 msg_Dbg (d->obj, " bauds rates %10"PRIu32" to %10"PRIu32,
534 info.symbol_rate_min, info.symbol_rate_max);
535 msg_Dbg (d->obj, " (%"PRIu32" tolerance)", info.symbol_rate_tolerance);
537 /* DVB first generation and ATSC */
540 case FE_QPSK: systems = DVB_S; break;
541 case FE_QAM: systems = DVB_C; break;
542 case FE_OFDM: systems = DVB_T; break;
543 case FE_ATSC: systems = ATSC | CQAM; break;
545 msg_Err (d->obj, "unknown frontend type %u", info.type);
548 /* DVB 2nd generation */
554 if (info.caps & FE_CAN_2G_MODULATION)
555 systems |= systems << 1; /* DVB_foo -> DVB_foo|DVB_foo2 */
560 /* ISDB (only terrestrial before DVBv5.5) */
561 if (info.type == FE_OFDM)
567 /** Finds a frontend of the correct type */
568 static int dvb_find_frontend (dvb_device_t *d, unsigned system)
570 if (d->frontend != -1)
572 if (d->systems & system)
573 return 0; /* already got an adequate frontend */
579 for (unsigned n = 0; n < 256; n++)
581 int fd = dvb_open_node (d->dir, "frontend", n, O_RDWR);
585 break; /* all frontends already enumerated */
586 msg_Err (d->obj, "cannot access frontend %u: %m", n);
590 d->systems = dvb_probe_frontend (d, fd);
591 if (d->systems & system)
593 msg_Dbg (d->obj, "selected frontend %u", n);
598 msg_Dbg (d->obj, "skipping frontend %u: wrong type", n);
602 msg_Err (d->obj, "no suitable frontend found");
607 * Detects supported delivery systems.
608 * @return a bit mask of supported systems (zero on failure)
610 unsigned dvb_enum_systems (dvb_device_t *d)
612 unsigned systems = 0;
614 for (unsigned n = 0; n < 256; n++)
616 int fd = dvb_open_node (d->dir, "frontend", n, O_RDWR);
620 break; /* all frontends already enumerated */
621 msg_Err (d->obj, "cannot access frontend %u; %m", n);
625 systems |= dvb_probe_frontend (d, fd);
631 float dvb_get_signal_strength (dvb_device_t *d)
635 if (ioctl (d->frontend, FE_READ_SIGNAL_STRENGTH, &strength) < 0)
637 return strength / 65535.;
640 float dvb_get_snr (dvb_device_t *d)
644 if (ioctl (d->frontend, FE_READ_SNR, &snr) < 0)
650 void dvb_set_ca_pmt (dvb_device_t *d, struct dvbpsi_pmt_s *pmt)
653 en50221_SetCAPMT (d->cam, pmt);
657 static int dvb_vset_props (dvb_device_t *d, size_t n, va_list ap)
659 assert (n <= DTV_IOCTL_MAX_MSGS);
661 struct dtv_property buf[n], *prop = buf;
662 struct dtv_properties props = { .num = n, .props = buf };
664 memset (prop, 0, sizeof (prop));
668 prop->cmd = va_arg (ap, uint32_t);
669 prop->u.data = va_arg (ap, uint32_t);
670 msg_Dbg (d->obj, "setting property %2"PRIu32" to %"PRIu32,
671 prop->cmd, prop->u.data);
676 if (ioctl (d->frontend, FE_SET_PROPERTY, &props) < 0)
678 msg_Err (d->obj, "cannot set frontend tuning parameters: %m");
684 static int dvb_set_props (dvb_device_t *d, size_t n, ...)
690 ret = dvb_vset_props (d, n, ap);
695 static int dvb_set_prop (dvb_device_t *d, uint32_t prop, uint32_t val)
697 return dvb_set_props (d, 1, prop, val);
700 int dvb_set_inversion (dvb_device_t *d, int v)
704 case 0: v = INVERSION_OFF; break;
705 case 1: v = INVERSION_ON; break;
706 default: v = INVERSION_AUTO; break;
708 return dvb_set_prop (d, DTV_INVERSION, v);
711 int dvb_tune (dvb_device_t *d)
713 return dvb_set_prop (d, DTV_TUNE, 0 /* dummy */);
718 int dvb_set_dvbc (dvb_device_t *d, uint32_t freq, const char *modstr,
719 uint32_t srate, uint32_t fec)
721 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
722 fec = dvb_parse_fec (fec);
724 if (dvb_find_frontend (d, DVB_C))
726 return dvb_set_props (d, 6, DTV_CLEAR, 0,
728 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_A,
730 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
732 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
733 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
738 static unsigned dvb_parse_polarization (char pol)
740 static const dvb_int_map_t tab[5] = {
741 { 0, SEC_VOLTAGE_OFF },
742 { 'H', SEC_VOLTAGE_18 },
743 { 'L', SEC_VOLTAGE_18 },
744 { 'R', SEC_VOLTAGE_13 },
745 { 'V', SEC_VOLTAGE_13 },
747 return dvb_parse_int (pol, tab, 5, SEC_VOLTAGE_OFF);
750 int dvb_set_sec (dvb_device_t *d, uint64_t freq_Hz, char pol,
751 uint32_t lowf, uint32_t highf, uint32_t switchf)
753 uint32_t freq = freq_Hz / 1000;
755 /* Always try to configure high voltage, but only warn on enable failure */
756 int val = var_InheritBool (d->obj, "dvb-high-voltage");
757 if (ioctl (d->frontend, FE_ENABLE_HIGH_LNB_VOLTAGE, &val) < 0 && val)
758 msg_Err (d->obj, "cannot enable high LNB voltage: %m");
760 /* Windows BDA exposes a higher-level API covering LNB oscillators.
761 * So lets pretend this is platform-specific stuff and do it here. */
763 { /* Default oscillator frequencies */
766 uint16_t min, max, low, high;
768 { /* min max low high */
769 { 10700, 13250, 9750, 10600 }, /* Ku band */
770 { 4500, 4800, 5950, 0 }, /* C band (high) */
771 { 3400, 4200, 5150, 0 }, /* C band (low) */
772 { 2500, 2700, 3650, 0 }, /* S band */
773 { 950, 2150, 0, 0 }, /* adjusted IF (L band) */
775 uint_fast16_t mHz = freq / 1000;
777 for (size_t i = 0; i < sizeof (tab) / sizeof (tab[0]); i++)
778 if (mHz >= tab[i].min && mHz <= tab[i].max)
780 lowf = tab[i].low * 1000;
781 highf = tab[i].high * 1000;
785 msg_Err (d->obj, "no known band for frequency %u kHz", freq);
787 msg_Dbg (d->obj, "selected LNB low: %u kHz, LNB high: %u kHz",
791 /* Use high oscillator frequency? */
792 bool high = highf != 0 && freq > switchf;
794 freq -= high ? highf : lowf;
795 if ((int32_t)freq < 0)
797 assert (freq < 0x7fffffff);
800 switch (var_InheritInteger (d->obj, "dvb-tone"))
802 case 0: tone = SEC_TONE_OFF; break;
803 case 1: tone = SEC_TONE_ON; break;
804 default: tone = high ? SEC_TONE_ON : SEC_TONE_OFF;
807 /*** LNB selection / DiSEqC ***/
808 unsigned voltage = dvb_parse_polarization (pol);
809 if (dvb_set_props (d, 2, DTV_TONE, SEC_TONE_OFF, DTV_VOLTAGE, voltage))
812 unsigned satno = var_InheritInteger (d->obj, "dvb-satno");
816 #undef msleep /* we know what we are doing! */
817 struct dvb_diseqc_master_cmd cmd;
819 satno = (satno - 1) & 3;
820 cmd.msg[0] = 0xE0; /* framing: master, no reply, 1st TX */
821 cmd.msg[1] = 0x10; /* address: all LNB/switch */
822 cmd.msg[2] = 0x38; /* command: Write Port Group 0 */
823 cmd.msg[3] = 0xF0 /* data[0]: clear all bits */
824 | (satno << 2) /* LNB (A, B, C or D) */
825 | ((voltage == SEC_VOLTAGE_18) << 1) /* polarization */
826 | (tone == SEC_TONE_ON); /* option */
827 cmd.msg[4] = cmd.msg[5] = 0; /* unused */
828 msleep (15000); /* wait 15 ms before DiSEqC command */
829 if (ioctl (d->frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd) < 0)
831 msg_Err (d->obj, "cannot send DiSEqC command: %m");
834 msleep (54000 + 15000);
838 if (ioctl (d->frontend, FE_DISEQC_SEND_BURST,
839 satno ? SEC_MINI_B : SEC_MINI_A) < 0)
841 msg_Err (d->obj, "cannot send Mini-DiSEqC tone burst: %m");
847 /* Continuous tone (to select high oscillator frequency) */
848 return dvb_set_props (d, 2, DTV_FREQUENCY, freq, DTV_TONE, tone);
851 int dvb_set_dvbs (dvb_device_t *d, uint64_t freq_Hz,
852 uint32_t srate, uint32_t fec)
854 uint32_t freq = freq_Hz / 1000;
855 fec = dvb_parse_fec (fec);
857 if (dvb_find_frontend (d, DVB_S))
859 return dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS,
860 DTV_FREQUENCY, freq, DTV_SYMBOL_RATE, srate,
864 int dvb_set_dvbs2 (dvb_device_t *d, uint64_t freq_Hz, const char *modstr,
865 uint32_t srate, uint32_t fec, int pilot, int rolloff)
867 uint32_t freq = freq_Hz / 1000;
868 unsigned mod = dvb_parse_modulation (modstr, QPSK);
869 fec = dvb_parse_fec (fec);
873 case 0: pilot = PILOT_OFF; break;
874 case 1: pilot = PILOT_ON; break;
875 default: pilot = PILOT_AUTO; break;
880 case 20: rolloff = ROLLOFF_20; break;
881 case 25: rolloff = ROLLOFF_25; break;
882 case 35: rolloff = ROLLOFF_35; break;
883 default: rolloff = PILOT_AUTO; break;
886 if (dvb_find_frontend (d, DVB_S2))
888 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBS2,
889 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
890 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec,
891 DTV_PILOT, pilot, DTV_ROLLOFF, rolloff);
896 static uint32_t dvb_parse_bandwidth (uint32_t i)
901 case 2: return 1712000;
902 default: return i * 1000000;
906 static int dvb_parse_transmit_mode (int i)
908 static const dvb_int_map_t tab[] = {
909 { -1, TRANSMISSION_MODE_AUTO },
911 { 1, TRANSMISSION_MODE_1K },
913 { 2, TRANSMISSION_MODE_2K },
914 { 4, TRANSMISSION_MODE_4K },
915 { 8, TRANSMISSION_MODE_8K },
917 { 16, TRANSMISSION_MODE_16K },
918 { 32, TRANSMISSION_MODE_32K },
921 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
922 TRANSMISSION_MODE_AUTO);
925 static int dvb_parse_guard (uint32_t guard)
927 static const dvb_int_map_t tab[] = {
928 { VLC_GUARD(1,4), GUARD_INTERVAL_1_4 },
929 { VLC_GUARD(1,8), GUARD_INTERVAL_1_8 },
930 { VLC_GUARD(1,16), GUARD_INTERVAL_1_16 },
931 { VLC_GUARD(1,32), GUARD_INTERVAL_1_32 },
933 { VLC_GUARD(1,128), GUARD_INTERVAL_1_128 },
934 { VLC_GUARD(19,128), GUARD_INTERVAL_19_128 },
935 { VLC_GUARD(19,256), GUARD_INTERVAL_19_256 },
937 { VLC_GUARD_AUTO, GUARD_INTERVAL_AUTO },
939 return dvb_parse_int (guard, tab, sizeof (tab) / sizeof (*tab),
940 GUARD_INTERVAL_AUTO);
943 static int dvb_parse_hierarchy (int i)
945 static const dvb_int_map_t tab[] = {
946 { HIERARCHY_AUTO, -1 },
947 { HIERARCHY_NONE, 0 },
952 return dvb_parse_int (i, tab, sizeof (tab) / sizeof (*tab),
956 int dvb_set_dvbt (dvb_device_t *d, uint32_t freq, const char *modstr,
957 uint32_t fec_hp, uint32_t fec_lp, uint32_t bandwidth,
958 int transmit_mode, uint32_t guard, int hierarchy)
960 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
961 fec_hp = dvb_parse_fec (fec_hp);
962 fec_lp = dvb_parse_fec (fec_lp);
963 bandwidth = dvb_parse_bandwidth (bandwidth);
964 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
965 guard = dvb_parse_guard (guard);
966 hierarchy = dvb_parse_hierarchy (hierarchy);
968 if (dvb_find_frontend (d, DVB_T))
970 return dvb_set_props (d, 10, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT,
971 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
972 DTV_CODE_RATE_HP, fec_hp, DTV_CODE_RATE_LP, fec_lp,
973 DTV_BANDWIDTH_HZ, bandwidth,
974 DTV_TRANSMISSION_MODE, transmit_mode,
975 DTV_GUARD_INTERVAL, guard,
976 DTV_HIERARCHY, hierarchy);
979 int dvb_set_dvbt2 (dvb_device_t *d, uint32_t freq, const char *modstr,
980 uint32_t fec, uint32_t bandwidth,
981 int transmit_mode, uint32_t guard)
984 uint32_t mod = dvb_parse_modulation (modstr, QAM_AUTO);
985 fec = dvb_parse_fec (fec);
986 bandwidth = dvb_parse_bandwidth (bandwidth);
987 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
988 guard = dvb_parse_guard (guard);
990 if (dvb_find_frontend (d, DVB_T2))
992 return dvb_set_props (d, 8, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_DVBT2,
993 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
994 DTV_INNER_FEC, fec, DTV_BANDWIDTH_HZ, bandwidth,
995 DTV_TRANSMISSION_MODE, transmit_mode,
996 DTV_GUARD_INTERVAL, guard);
998 # warning DVB-T2 needs Linux DVB version 5.3 or later.
999 msg_Err (d->obj, "DVB-T2 support not compiled-in");
1000 (void) freq; (void) modstr; (void) fec; (void) bandwidth;
1001 (void) transmit_mode; (void) guard;
1008 int dvb_set_isdbc (dvb_device_t *d, uint32_t freq, const char *modstr,
1009 uint32_t srate, uint32_t fec)
1011 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
1012 fec = dvb_parse_fec (fec);
1014 if (dvb_find_frontend (d, ISDB_C))
1016 return dvb_set_props (d, 6, DTV_CLEAR, 0,
1018 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_C,
1020 # warning ISDB-C might need Linux DVB version 5.5 or later.
1021 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_AC,
1023 DTV_FREQUENCY, freq, DTV_MODULATION, mod,
1024 DTV_SYMBOL_RATE, srate, DTV_INNER_FEC, fec);
1029 int dvb_set_isdbs (dvb_device_t *d, uint64_t freq_Hz, uint16_t ts_id)
1031 uint32_t freq = freq_Hz / 1000;
1033 if (dvb_find_frontend (d, ISDB_S))
1035 return dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBS,
1036 DTV_FREQUENCY, freq,
1037 DTV_ISDBS_TS_ID, (uint32_t)ts_id);
1042 static int dvb_set_isdbt_layer (dvb_device_t *d, unsigned num,
1043 const isdbt_layer_t *l)
1045 uint32_t mod = dvb_parse_modulation (l->modulation, QAM_AUTO);
1046 uint32_t fec = dvb_parse_fec (l->code_rate);
1047 uint32_t count = l->segment_count;
1048 uint32_t ti = l->time_interleaving;
1050 num *= DTV_ISDBT_LAYERB_FEC - DTV_ISDBT_LAYERA_FEC;
1052 return dvb_set_props (d, 5, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
1053 DTV_ISDBT_LAYERA_FEC + num, fec,
1054 DTV_ISDBT_LAYERA_MODULATION + num, mod,
1055 DTV_ISDBT_LAYERA_SEGMENT_COUNT + num, count,
1056 DTV_ISDBT_LAYERA_TIME_INTERLEAVING + num, ti);
1059 int dvb_set_isdbt (dvb_device_t *d, uint32_t freq, uint32_t bandwidth,
1060 int transmit_mode, uint32_t guard,
1061 const isdbt_layer_t layers[3])
1063 bandwidth = dvb_parse_bandwidth (bandwidth);
1064 transmit_mode = dvb_parse_transmit_mode (transmit_mode);
1065 guard = dvb_parse_guard (guard);
1067 if (dvb_find_frontend (d, ISDB_T))
1069 if (dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
1070 DTV_FREQUENCY, freq, DTV_BANDWIDTH_HZ, bandwidth,
1071 DTV_GUARD_INTERVAL, guard))
1073 for (unsigned i = 0; i < 3; i++)
1074 if (dvb_set_isdbt_layer (d, i, layers + i))
1081 int dvb_set_atsc (dvb_device_t *d, uint32_t freq, const char *modstr)
1083 unsigned mod = dvb_parse_modulation (modstr, VSB_8);
1085 if (dvb_find_frontend (d, ATSC))
1087 return dvb_set_props (d, 4, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ATSC,
1088 DTV_FREQUENCY, freq, DTV_MODULATION, mod);
1091 int dvb_set_cqam (dvb_device_t *d, uint32_t freq, const char *modstr)
1093 unsigned mod = dvb_parse_modulation (modstr, QAM_AUTO);
1095 if (dvb_find_frontend (d, CQAM))
1097 return dvb_set_props (d, 4, DTV_CLEAR, 0,
1098 DTV_DELIVERY_SYSTEM, SYS_DVBC_ANNEX_B,
1099 DTV_FREQUENCY, freq, DTV_MODULATION, mod);