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tvheadend/src/dvb/dvb_tables.c
Adam Sutton db2f4d1e41 time: hide some debug messages to limit spamming logs 
(cherry picked from commit f339c08c49)
2013-03-08 22:23:02 +00:00

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/*
* DVB Table support
* Copyright (C) 2007 Andreas Öman
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/epoll.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <time.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
#include "tvheadend.h"
#include "dvb.h"
#include "dvb_support.h"
#include "epg.h"
#include "channels.h"
#include "psi.h"
#include "notify.h"
#include "cwc.h"
#include "tvhtime.h"
#if TDT_TRACE
#define TRACE(_pre, _fmt, ...)\
tvhlog(LOG_DEBUG, "tdt-"_pre, _fmt, __VA_ARGS__)
#else
#define TRACE(_pre, _fmt, ...) (void)0
#endif
/**
*
*/
static void
dvb_table_fastswitch(th_dvb_mux_instance_t *tdmi)
{
th_dvb_table_t *tdt;
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
char buf[100];
if(!tdmi->tdmi_table_initial)
return;
LIST_FOREACH(tdt, &tdmi->tdmi_tables, tdt_link)
if((tdt->tdt_flags & TDT_QUICKREQ) && tdt->tdt_count == 0)
return;
tdmi->tdmi_table_initial = 0;
tda->tda_initial_num_mux--;
dvb_mux_save(tdmi);
dvb_mux_nicename(buf, sizeof(buf), tdmi);
tvhlog(LOG_DEBUG, "dvb", "\"%s\" initial scan completed for \"%s\"",
tda->tda_rootpath, buf);
dvb_adapter_mux_scanner(tda);
}
/**
*
*/
void
dvb_table_dispatch(uint8_t *sec, int r, th_dvb_table_t *tdt)
{
if(tdt->tdt_destroyed)
return;
int chkcrc = tdt->tdt_flags & TDT_CRC;
int tableid, len;
uint8_t *ptr;
int ret;
th_dvb_mux_instance_t *tdmi = tdt->tdt_tdmi;
/* It seems some hardware (or is it the dvb API?) does not
honour the DMX_CHECK_CRC flag, so we check it again */
if(chkcrc && tvh_crc32(sec, r, 0xffffffff))
return;
r -= 3;
tableid = sec[0];
len = ((sec[1] & 0x0f) << 8) | sec[2];
if(len < r)
return;
if((tableid & tdt->tdt_mask) != tdt->tdt_table)
return;
ptr = &sec[3];
if(chkcrc) len -= 4; /* Strip trailing CRC */
if(tdt->tdt_flags & TDT_CA)
ret = tdt->tdt_callback((th_dvb_mux_instance_t *)tdt,
sec, len + 3, tableid, tdt->tdt_opaque);
else if(tdt->tdt_flags & TDT_TDT)
ret = tdt->tdt_callback(tdt->tdt_tdmi, ptr, len, tableid, tdt);
else
ret = tdt->tdt_callback(tdt->tdt_tdmi, ptr, len, tableid, tdt->tdt_opaque);
if(ret == 0)
tdt->tdt_count++;
if(tdt->tdt_flags & TDT_QUICKREQ)
dvb_table_fastswitch(tdmi);
}
/**
*
*/
void
dvb_table_release(th_dvb_table_t *tdt)
{
if(--tdt->tdt_refcount == 0)
free(tdt);
}
/**
*
*/
static void
dvb_tdt_destroy(th_dvb_adapter_t *tda, th_dvb_mux_instance_t *tdmi,
th_dvb_table_t *tdt)
{
lock_assert(&global_lock);
assert(tdt->tdt_tdmi == tdmi);
LIST_REMOVE(tdt, tdt_link);
tdmi->tdmi_num_tables--;
tda->tda_close_table(tdmi, tdt);
free(tdt->tdt_name);
tdt->tdt_destroyed = 1;
dvb_table_release(tdt);
}
/**
* Add a new DVB table
*/
void
tdt_add(th_dvb_mux_instance_t *tdmi, int tableid, int mask,
int (*callback)(th_dvb_mux_instance_t *tdmi, uint8_t *buf, int len,
uint8_t tableid, void *opaque), void *opaque,
const char *name, int flags, int pid)
{
th_dvb_table_t *t;
// Allow multiple entries per PID, but only one per callback/opaque instance
// TODO: this could mean reading the same data multiple times, and not
// sure how well this will work! I know Andreas has some thoughts on
// this
LIST_FOREACH(t, &tdmi->tdmi_tables, tdt_link) {
if(pid == t->tdt_pid &&
t->tdt_callback == callback && t->tdt_opaque == opaque) {
return;
}
}
th_dvb_table_t *tdt = calloc(1, sizeof(th_dvb_table_t));
tdt->tdt_refcount = 1;
tdt->tdt_name = strdup(name);
tdt->tdt_callback = callback;
tdt->tdt_opaque = opaque;
tdt->tdt_pid = pid;
tdt->tdt_flags = flags;
tdt->tdt_table = tableid;
tdt->tdt_mask = mask;
tdt->tdt_tdmi = tdmi;
LIST_INSERT_HEAD(&tdmi->tdmi_tables, tdt, tdt_link);
tdmi->tdmi_num_tables++;
tdt->tdt_fd = -1;
tdmi->tdmi_adapter->tda_open_table(tdmi, tdt);
}
/**
* DVB Descriptor; Service
*/
static int
dvb_desc_service(uint8_t *ptr, int len, uint8_t *typep,
char *provider, size_t providerlen,
char *name, size_t namelen)
{
int r;
if(len < 2)
return -1;
*typep = ptr[0];
ptr++;
len--;
if((r = dvb_get_string_with_len(provider, providerlen, ptr, len, NULL, NULL)) < 0)
return -1;
ptr += r; len -= r;
if((r = dvb_get_string_with_len(name, namelen, ptr, len, NULL, NULL)) < 0)
return -1;
ptr += r; len -= r;
return 0;
}
/**
* DVB Descriptor: Default authority
*/
static int
dvb_desc_def_authority(uint8_t *ptr, int len, char *defauth, size_t dalen)
{
int r;
if ((r = dvb_get_string(defauth, dalen, ptr, len, NULL, NULL)) < 0)
return -1;
return 0;
}
static int
dvb_bat_callback(th_dvb_mux_instance_t *tdmi, uint8_t *buf, int len,
uint8_t tableid, void *opaque)
{
int i, j, bdlen, tslen, tdlen;
uint8_t dtag, dlen;
uint16_t tsid, onid;
char crid[257];
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
if (tableid != 0x4a) return -1;
bdlen = ((buf[5] & 0xf) << 8) | buf[6];
if (bdlen+7 > len) return -1;
buf += 7;
len -= 7;
/* Bouquet Desc */
i = 0;
// TODO: parse top level descriptors?
buf += bdlen;
len -= bdlen;
tslen = ((buf[0] & 0xf) << 8) | buf[1];
if (tslen+2 > len) return -1;
buf += 2;
len -= 2;
/* Transport Loop */
i = 0;
while (i+6 < tslen) {
tsid = buf[i] << 8 | buf[i+1];
onid = buf[i+2] << 8 | buf[i+3];
tdlen = ((buf[i+4] & 0xf) << 8) | buf[i+5];
if (tdlen+i+6 > tslen) break;
i += 6;
j = 0;
/* Find TDMI */
LIST_FOREACH(tdmi, &tda->tda_muxes, tdmi_adapter_link)
if(tdmi->tdmi_transport_stream_id == tsid &&
tdmi->tdmi_network_id == onid)
break;
/* Descriptors */
if (tdmi) {
int save = 0;
*crid = 0;
while (j+2 < tdlen) {
dtag = buf[i+j];
dlen = buf[i+j+1];
if (dlen+j+2 > tdlen) break;
j += 2;
switch (dtag) {
case DVB_DESC_DEF_AUTHORITY:
dvb_desc_def_authority(buf+i+j, dlen, crid, sizeof(crid));
break;
}
j += dlen;
}
if (*crid && strcmp(tdmi->tdmi_default_authority ?: "", crid)) {
free(tdmi->tdmi_default_authority);
tdmi->tdmi_default_authority = strdup(crid);
save = 1;
}
if (save)
dvb_mux_save(tdmi);
}
i += tdlen;
}
return 0;
}
/**
* DVB SDT (Service Description Table)
*/
static int
dvb_sdt_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
service_t *t;
uint16_t service_id;
uint16_t tsid, onid;
int free_ca_mode;
int dllen;
uint8_t dtag, dlen;
char crid[257];
char provider[256];
char chname0[256], *chname;
uint8_t stype;
#if TDT_TRACE
uint8_t running_status;
#endif
int l;
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
if (tableid != 0x42 && tableid != 0x46) return -1;
if(len < 8) return -1;
tsid = ptr[0] << 8 | ptr[1];
onid = ptr[5] << 8 | ptr[6];
if (tableid == 0x42) {
dvb_mux_set_tsid(tdmi, tsid, 0);
dvb_mux_set_onid(tdmi, onid, 0);
if(tdmi->tdmi_transport_stream_id != tsid || tdmi->tdmi_network_id != onid)
return -1;
} else {
LIST_FOREACH(tdmi, &tda->tda_muxes, tdmi_adapter_link)
if(tdmi->tdmi_transport_stream_id == tsid &&
tdmi->tdmi_network_id == onid)
break;
if (!tdmi) return -1;
}
TRACE("sdt", "onid %04X tsid %04X", onid, tsid);
// version = ptr[2] >> 1 & 0x1f;
// section_number = ptr[3];
// last_section_number = ptr[4];
// reserved = ptr[7];
if((ptr[2] & 1) == 0) {
/* current_next_indicator == next, skip this */
return -1;
}
len -= 8;
ptr += 8;
while(len >= 5) {
int save = 0;
service_id = ptr[0] << 8 | ptr[1];
// reserved = ptr[2];
#if TDT_TRACE
running_status = (ptr[3] >> 5) & 0x7;
#endif
free_ca_mode = (ptr[3] >> 4) & 0x1;
dllen = ((ptr[3] & 0x0f) << 8) | ptr[4];
TRACE("sdt", " sid %04X running %d free_ca %d",
service_id, running_status, free_ca_mode);
len -= 5;
ptr += 5;
if(dllen > len)
break;
stype = 0;
chname = NULL;
*crid = 0;
while(dllen > 2) {
dtag = ptr[0];
dlen = ptr[1];
len -= 2; ptr += 2; dllen -= 2;
if(dlen > len) break;
switch(dtag) {
case DVB_DESC_SERVICE:
if(dvb_desc_service(ptr, dlen, &stype,
provider, sizeof(provider),
chname0, sizeof(chname0)) == 0) {
TRACE("sdt", " stype = %d, provider = %s, name = %s",
stype, provider, chname0);
chname = chname0;
/* Some providers insert spaces.
Clean up that (both heading and trailing) */
while(*chname <= 32 && *chname != 0)
chname++;
l = strlen(chname);
while(l > 1 && chname[l - 1] <= 32) {
chname[l - 1] = 0;
l--;
}
if(l == 0) {
chname = chname0;
snprintf(chname0, sizeof(chname0), "noname-sid-0x%x", service_id);
}
}
break;
case DVB_DESC_DEF_AUTHORITY:
dvb_desc_def_authority(ptr, dlen, crid, sizeof(crid));
break;
}
len -= dlen; ptr += dlen; dllen -= dlen;
}
if (!servicetype_is_tv(stype) &&
!servicetype_is_radio(stype))
continue;
if (!(t = dvb_service_find(tdmi, service_id, 0, NULL)))
continue;
if(t->s_servicetype != stype ||
t->s_scrambled != free_ca_mode) {
t->s_servicetype = stype;
t->s_scrambled = free_ca_mode;
save = 1;
}
if (chname && (strcmp(t->s_provider ?: "", provider) ||
strcmp(t->s_svcname ?: "", chname))) {
free(t->s_provider);
t->s_provider = strdup(provider);
free(t->s_svcname);
t->s_svcname = strdup(chname);
pthread_mutex_lock(&t->s_stream_mutex);
service_make_nicename(t);
pthread_mutex_unlock(&t->s_stream_mutex);
save = 1;
}
if (*crid && strcmp(t->s_default_authority ?: "", crid)) {
free(t->s_default_authority);
t->s_default_authority = strdup(crid);
save = 1;
}
if (save) {
t->s_config_save(t);
service_refresh_channel(t);
}
}
return 0;
}
/*
* Combined PID 0x11 callback, for stuff commonly found on that PID
*/
int dvb_pidx11_callback
(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
if (tableid == 0x42 || tableid == 0x46)
return dvb_sdt_callback(tdmi, ptr, len, tableid, opaque);
else if (tableid == 0x4a)
return dvb_bat_callback(tdmi, ptr, len, tableid, opaque);
return -1;
}
/**
* PAT - Program Allocation table
*/
static int
dvb_pat_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
uint16_t service, pmt, tsid;
if(len < 5)
return -1;
if((ptr[2] & 1) == 0) {
/* current_next_indicator == next, skip this */
return -1;
}
tsid = (ptr[0] << 8) | ptr[1];
dvb_mux_set_tsid(tdmi, tsid, 0);
if (tdmi->tdmi_transport_stream_id != tsid)
return -1;
ptr += 5;
len -= 5;
while(len >= 4) {
service = ptr[0] << 8 | ptr[1];
pmt = (ptr[2] & 0x1f) << 8 | ptr[3];
if(service != 0 && pmt != 0) {
int save = 0;
dvb_service_find2(tdmi, service, pmt, NULL, &save);
if (save || !tda->tda_disable_pmt_monitor)
dvb_table_add_pmt(tdmi, pmt);
}
ptr += 4;
len -= 4;
}
return 0;
}
/**
* CA - Conditional Access
*/
static int
dvb_ca_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
#if ENABLE_CWC
cwc_emm(ptr, len, (uintptr_t)opaque, (void *)tdmi);
#endif
return 0;
}
/**
* CAT - Conditional Access Table
*/
static int
dvb_cat_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
int tag, tlen;
uint16_t pid;
uintptr_t caid;
if((ptr[2] & 1) == 0) {
/* current_next_indicator == next, skip this */
return -1;
}
ptr += 5;
len -= 5;
while(len > 2) {
tag = *ptr++;
tlen = *ptr++;
len -= 2;
switch(tag) {
case DVB_DESC_CA:
caid = ( ptr[0] << 8) | ptr[1];
pid = ((ptr[2] & 0x1f) << 8) | ptr[3];
if(pid == 0)
break;
tdt_add(tdmi, 0, 0, dvb_ca_callback, (void *)caid, "CA",
TDT_CA, pid);
break;
default:
break;
}
ptr += tlen;
len -= tlen;
}
return 0;
}
/**
* Tables for delivery descriptor parsing
*/
static const fe_code_rate_t fec_tab [16] = {
FEC_AUTO, FEC_1_2, FEC_2_3, FEC_3_4,
FEC_5_6, FEC_7_8, FEC_8_9,
#if DVB_API_VERSION >= 5
FEC_3_5,
#else
FEC_NONE,
#endif
FEC_4_5,
#if DVB_API_VERSION >= 5
FEC_9_10,
#else
FEC_NONE,
#endif
FEC_NONE, FEC_NONE,
FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE
};
static const fe_modulation_t qam_tab [6] = {
QAM_AUTO, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256
};
static const fe_bandwidth_t bandwidth_tab [8] = {
BANDWIDTH_8_MHZ, BANDWIDTH_7_MHZ, BANDWIDTH_6_MHZ, BANDWIDTH_AUTO,
BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO
};
static const fe_modulation_t constellation_tab [4] = {
QPSK, QAM_16, QAM_64, QAM_AUTO
};
static const fe_code_rate_t code_rate_tab [8] = {
FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_AUTO, FEC_AUTO, FEC_AUTO
};
static const fe_guard_interval_t guard_interval_tab [4] = {
GUARD_INTERVAL_1_32, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_4
};
static const fe_transmit_mode_t transmission_mode_tab [4] = {
TRANSMISSION_MODE_2K,
TRANSMISSION_MODE_8K,
#if DVB_VER_ATLEAST(5,3)
TRANSMISSION_MODE_4K,
#else
TRANSMISSION_MODE_AUTO, /* For older DVB API versions - hope the device can detect */
#endif
TRANSMISSION_MODE_AUTO
};
static const fe_hierarchy_t hierarchy_info_tab [8] = {
HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4,
HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4
};
/**
* Cable delivery descriptor
*/
static int
dvb_table_cable_delivery(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint16_t tsid, uint16_t onid, const char *netname)
{
struct dvb_mux_conf dmc;
int freq, symrate;
if(len < 11)
return -1;
memset(&dmc, 0, sizeof(dmc));
dmc.dmc_fe_params.inversion = INVERSION_AUTO;
freq =
bcdtoint(ptr[0]) * 1000000 + bcdtoint(ptr[1]) * 10000 +
bcdtoint(ptr[2]) * 100 + bcdtoint(ptr[3]);
if(!freq)
return -1;
dmc.dmc_fe_params.frequency = freq * 100;
TRACE("nit", " dvb-c frequency %d", dmc.dmc_fe_params.frequency);
symrate =
bcdtoint(ptr[7]) * 100000 + bcdtoint(ptr[8]) * 1000 +
bcdtoint(ptr[9]) * 10 + (ptr[10] >> 4);
dmc.dmc_fe_params.u.qam.symbol_rate = symrate * 100;
if((ptr[6] & 0x0f) > 5)
dmc.dmc_fe_params.u.qam.modulation = QAM_AUTO;
else
dmc.dmc_fe_params.u.qam.modulation = qam_tab[ptr[6] & 0x0f];
dmc.dmc_fe_params.u.qam.fec_inner = fec_tab[ptr[10] & 0x07];
dvb_mux_create(tdmi->tdmi_adapter, &dmc, onid, tsid, netname,
"automatic mux discovery", 1, 1, NULL, NULL,
tdmi->tdmi_adapter->tda_autodiscovery);
return 0;
}
/**
* Satellite delivery descriptor
*/
static int
dvb_table_sat_delivery(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint16_t tsid, uint16_t onid, const char *netname)
{
int freq, symrate;
// uint16_t orbital_pos;
struct dvb_mux_conf dmc;
if(len < 11)
return -1;
memset(&dmc, 0, sizeof(dmc));
dmc.dmc_fe_params.inversion = INVERSION_AUTO;
freq =
bcdtoint(ptr[0]) * 1000000 + bcdtoint(ptr[1]) * 10000 +
bcdtoint(ptr[2]) * 100 + bcdtoint(ptr[3]);
dmc.dmc_fe_params.frequency = freq * 10;
TRACE("nit", " dvb-s frequency %d", dmc.dmc_fe_params.frequency);
if(!freq)
return -1;
// orbital_pos = bcdtoint(ptr[4]) * 100 + bcdtoint(ptr[5]);
symrate =
bcdtoint(ptr[7]) * 100000 + bcdtoint(ptr[8]) * 1000 +
bcdtoint(ptr[9]) * 10 + (ptr[10] >> 4);
dmc.dmc_fe_params.u.qam.symbol_rate = symrate * 100;
dmc.dmc_fe_params.u.qam.fec_inner = fec_tab[ptr[10] & 0x0f];
dmc.dmc_polarisation = (ptr[6] >> 5) & 0x03;
// Same satconf (lnb, switch, etc)
dmc.dmc_satconf = tdmi->tdmi_conf.dmc_satconf;
#if DVB_API_VERSION >= 5
int modulation = (ptr[6] & 0x03);
if (modulation == 0x01)
dmc.dmc_fe_modulation = QPSK;
else if (modulation == 0x02)
dmc.dmc_fe_modulation = PSK_8;
else if (modulation == 0x03)
dmc.dmc_fe_modulation = QAM_16;
else
dmc.dmc_fe_modulation = 0;
if (ptr[6] & 0x04)
dmc.dmc_fe_delsys = SYS_DVBS2;
else
dmc.dmc_fe_delsys = SYS_DVBS;
switch ((ptr[6] >> 3) & 0x03) {
case 0x00:
dmc.dmc_fe_rolloff = ROLLOFF_35;
break;
case 0x01:
dmc.dmc_fe_rolloff = ROLLOFF_25;
break;
case 0x02:
dmc.dmc_fe_rolloff = ROLLOFF_20;
break;
default:
case 0x03:
dmc.dmc_fe_rolloff = ROLLOFF_AUTO;
break;
}
if (dmc.dmc_fe_delsys == SYS_DVBS && dmc.dmc_fe_rolloff != ROLLOFF_35) {
printf ("error descriptor\n");
return -1;
}
#endif
dvb_mux_create(tdmi->tdmi_adapter, &dmc, onid, tsid, netname,
"automatic mux discovery", 1, 1, NULL, tdmi->tdmi_conf.dmc_satconf,
tdmi->tdmi_adapter->tda_autodiscovery);
return 0;
}
/**
* Terrestrial delivery descriptor
*/
static int
dvb_table_terr_delivery(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint16_t tsid, uint16_t onid, const char *netname)
{
struct dvb_mux_conf dmc;
int freq;
if(len < 11)
return -1;
memset(&dmc, 0, sizeof(dmc));
dmc.dmc_fe_params.inversion = INVERSION_AUTO;
freq = ((ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3]) * 10;
if(!freq)
return -1;
dmc.dmc_fe_params.frequency = freq;
TRACE("nit", " dvb-t frequency %d", dmc.dmc_fe_params.frequency);
dmc.dmc_fe_params.u.ofdm.bandwidth = bandwidth_tab[(ptr[4] & 0xe0) >> 5];
dmc.dmc_fe_params.u.ofdm.constellation=constellation_tab[(ptr[5] & 0xc0) >> 6];
dmc.dmc_fe_params.u.ofdm.hierarchy_information=hierarchy_info_tab[(ptr[5] & 0x38) >> 3];
dmc.dmc_fe_params.u.ofdm.code_rate_HP=code_rate_tab[ptr[5] & 0x3];
dmc.dmc_fe_params.u.ofdm.code_rate_LP=code_rate_tab[(ptr[6] & 0xe0) >> 5];
dmc.dmc_fe_params.u.ofdm.guard_interval=guard_interval_tab[(ptr[6] & 0x18) >> 3];
dmc.dmc_fe_params.u.ofdm.transmission_mode=transmission_mode_tab[(ptr[6] & 0x06) >> 1];
dvb_mux_create(tdmi->tdmi_adapter, &dmc, onid, tsid, netname,
"automatic mux discovery", 1, 1, NULL, NULL,
tdmi->tdmi_adapter->tda_autodiscovery);
return 0;
}
/**
*
*/
static void
dvb_table_local_channel(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint16_t tsid, uint16_t onid)
{
uint16_t sid, chan;
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
service_t *t;
LIST_FOREACH(tdmi, &tda->tda_muxes, tdmi_adapter_link)
if(tdmi->tdmi_transport_stream_id == tsid && tdmi->tdmi_network_id == onid)
break;
if(tdmi == NULL)
return;
while(len >= 4) {
sid = (ptr[0] << 8) | ptr[1];
chan = ((ptr[2] & 3) << 8) | ptr[3];
if(chan != 0) {
t = dvb_service_find(tdmi, sid, 0, NULL);
if(t != NULL) {
if(t->s_channel_number != chan) {
t->s_channel_number = chan;
t->s_config_save(t);
service_refresh_channel(t);
}
}
}
ptr += 4;
len -= 4;
}
}
/**
* NIT - Network Information Table
*/
static int
dvb_nit_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
uint8_t dtag, dlen;
uint16_t llen;
char netname[256];
uint16_t tsid, onid;
uint16_t network_id = (ptr[0] << 8) | ptr[1];
netname[0] = '\0';
TRACE("nit", "tableid 0x%02x", tableid);
#if TDT_TRACE
hexdump("nit", ptr, len);
#endif
/* Check NID */
if(tdmi->tdmi_adapter->tda_nitoid &&
tdmi->tdmi_adapter->tda_nitoid != network_id)
return -1;
/* Ignore non-current */
if((ptr[2] & 1) == 0)
return -1;
/* Network descriptors */
llen = ((ptr[5] & 0xf) << 8) | ptr[6];
ptr += 7;
len -= llen + 7;
if (len < 0)
return -1;
while(llen > 2) {
dtag = ptr[0];
dlen = ptr[1];
TRACE("nit", "dtag %02X dlen %d", dtag, dlen);
switch(dtag) {
case DVB_DESC_NETWORK_NAME:
if(dvb_get_string(netname, sizeof(netname), ptr+2, dlen, NULL, NULL))
return -1;
if(tableid == 0x40 && (!tdmi->tdmi_network || *tdmi->tdmi_network == '\0'))
dvb_mux_set_networkname(tdmi, netname);
break;
}
ptr += dlen + 2;
llen -= dlen + 2;
}
TRACE("nit", "network %d/%s", network_id, netname);
if (llen)
return -1;
/* Transport loop */
llen = ((ptr[0] & 0xf) << 8) | ptr[1];
ptr += 2;
len -= 2;
if (llen > len)
return -1;
while(len >= 6) {
tsid = ( ptr[0] << 8) | ptr[1];
onid = ( ptr[2] << 8) | ptr[3];
llen = ((ptr[4] & 0xf) << 8) | ptr[5];
TRACE("nit", " onid %04X tsid %04X", onid, tsid);
ptr += 6;
len -= llen + 6;
if(len < 0)
return -1;
while(llen > 2) {
dtag = ptr[0];
dlen = ptr[1];
TRACE("nit", " dtag %02X dlen %d", dtag, dlen);
switch(dtag) {
case DVB_DESC_SAT:
if(tdmi->tdmi_adapter->tda_type == FE_QPSK)
dvb_table_sat_delivery(tdmi, ptr+2, dlen, tsid, onid, netname);
break;
case DVB_DESC_CABLE:
if(tdmi->tdmi_adapter->tda_type == FE_QAM)
dvb_table_cable_delivery(tdmi, ptr+2, dlen, tsid, onid, netname);
break;
case DVB_DESC_TERR:
if(tdmi->tdmi_adapter->tda_type == FE_OFDM)
dvb_table_terr_delivery(tdmi, ptr+2, dlen, tsid, onid, netname);
break;
case DVB_DESC_LOCAL_CHAN:
dvb_table_local_channel(tdmi, ptr+2, dlen, tsid, onid);
break;
}
llen -= dlen + 2;
ptr += dlen + 2;
}
if (llen)
return -1;
}
return 0;
}
/**
* VCT - ATSC Virtual Channel Table
*/
static int
atsc_vct_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
th_dvb_mux_instance_t *tdmi0 = tdmi;
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
service_t *t;
int numch;
char chname[256];
uint8_t atsc_stype;
uint8_t stype;
uint16_t service_id;
uint16_t tsid, onid;
int dlen, dl;
uint8_t *dptr;
if(tableid != 0xc8 && tableid != 0xc9)
return -1; // Fail
ptr += 5; // Skip generic header
len -= 5;
if(len < 2)
return -1;
numch = ptr[1];
ptr += 2;
len -= 2;
for(; numch > 0 && len >= 32; ptr += 32 + dlen, len -= 32 + dlen, numch--) {
dl = dlen = ((ptr[30] & 3) << 8) | ptr[31];
if(dlen + 32 > len)
return -1; // Corrupt table
tsid = (ptr[22] << 8) | ptr[23];
onid = (ptr[24] << 8) | ptr[25];
if(tsid == 0) {
tdmi = tdmi0;
} else {
/* Search all muxes on adapter */
LIST_FOREACH(tdmi, &tda->tda_muxes, tdmi_adapter_link) {
if(tdmi->tdmi_transport_stream_id == tsid && tdmi->tdmi_network_id == onid)
break;
}
if(tdmi == NULL)
continue;
}
service_id = (ptr[24] << 8) | ptr[25];
if((t = dvb_service_find(tdmi, service_id, 0, NULL)) == NULL)
continue;
atsc_stype = ptr[27] & 0x3f;
if(atsc_stype != 0x02) {
/* Not ATSC TV */
continue;
}
stype = ST_SDTV;
atsc_utf16_to_utf8(ptr, 7, chname, sizeof(chname));
dptr = ptr + 32;
while(dl > 1) {
// int desclen = dptr[1];
dl -= dptr[1] + 2;
dptr += dptr[1] + 2;
}
if(t->s_servicetype != stype ||
strcmp(t->s_svcname ?: "", chname)) {
t->s_servicetype = stype;
tvh_str_set(&t->s_svcname, chname);
t->s_config_save(t);
}
}
return 0;
}
/**
* PMT - Program Mapping Table
*/
static int
dvb_pmt_callback(th_dvb_mux_instance_t *tdmi, uint8_t *ptr, int len,
uint8_t tableid, void *opaque)
{
int active = 0;
service_t *t;
th_dvb_table_t *tdt = opaque;
LIST_FOREACH(t, &tdmi->tdmi_transports, s_group_link) {
pthread_mutex_lock(&t->s_stream_mutex);
psi_parse_pmt(t, ptr, len, 1, 1);
if (t->s_pmt_pid == tdt->tdt_pid && t->s_status == SERVICE_RUNNING)
active = 1;
pthread_mutex_unlock(&t->s_stream_mutex);
}
if (tdmi->tdmi_adapter->tda_disable_pmt_monitor && !active)
dvb_tdt_destroy(tdmi->tdmi_adapter, tdmi, tdt);
return 0;
}
/*
* Time Offset table handler
*/
static int
dvb_tot_callback(th_dvb_mux_instance_t *tdmi, uint8_t *buf, int len,
uint8_t tableid, void *opaque)
{
uint16_t mjd;
uint8_t hour, min, sec;
int year, mon, day;
struct tm utc;
if (tableid != 0x73)
return -1;
/* DVB format MJD, Hour, Min, Sec */
mjd = (buf[0] << 8) | buf[1];
hour = bcdtoint(buf[2]);
min = bcdtoint(buf[3]);
sec = bcdtoint(buf[4]);
/* Convert MJD (using algo from EN 300 468 v1.13.1 Annex C) */
year = (int)((mjd - 15078.2) / 365.25);
mon = (int)((mjd - 14956.1 - (int)(year * 365.25)) / 30.6001);
day = mjd - 14956 - (int)(year * 365.25) - (int)(mon * 30.6001);
if (mon == 14 || mon == 15) {
year++;
mon -= 12;
}
mon--;
/* Convert to UTC time_t */
utc.tm_wday = 0;
utc.tm_yday = 0;
utc.tm_isdst = 0;
utc.tm_year = year;
utc.tm_mon = mon - 1;
utc.tm_mday = day;
utc.tm_hour = hour;
utc.tm_min = min;
utc.tm_sec = sec;
tvhtime_update(&utc);
return 0;
}
/**
* Demux for default DVB tables that we want
*/
static void
dvb_table_add_default_dvb(th_dvb_mux_instance_t *tdmi)
{
/* Network Information Table */
tdt_add(tdmi, 0, 0, dvb_nit_callback, NULL, "nit",
TDT_QUICKREQ | TDT_CRC, 0x10);
/* Service Descriptor Table and Bouqeut Allocation Table */
tdt_add(tdmi, 0, 0, dvb_pidx11_callback, NULL, "pidx11",
TDT_QUICKREQ | TDT_CRC, 0x11);
/* Time Offset Table */
tdt_add(tdmi, 0, 0, dvb_tot_callback, NULL, "tot", TDT_CRC, 0x14);
}
/**
* Demux for default ATSC tables that we want
*/
static void
dvb_table_add_default_atsc(th_dvb_mux_instance_t *tdmi)
{
int tableid;
if(tdmi->tdmi_conf.dmc_fe_params.u.vsb.modulation == VSB_8) {
tableid = 0xc8; // Terrestrial
} else {
tableid = 0xc9; // Cable
}
tdt_add(tdmi, tableid, 0xff, atsc_vct_callback, NULL, "vct",
TDT_QUICKREQ | TDT_CRC, 0x1ffb);
}
/**
* Setup FD + demux for default tables that we want
*/
void
dvb_table_add_default(th_dvb_mux_instance_t *tdmi)
{
/* Program Allocation Table */
tdt_add(tdmi, 0x00, 0xff, dvb_pat_callback, NULL, "pat",
TDT_QUICKREQ | TDT_CRC, 0);
/* Conditional Access Table */
tdt_add(tdmi, 0x1, 0xff, dvb_cat_callback, NULL, "cat",
TDT_CRC, 1);
switch(tdmi->tdmi_adapter->tda_type) {
case FE_QPSK:
case FE_OFDM:
case FE_QAM:
dvb_table_add_default_dvb(tdmi);
break;
case FE_ATSC:
dvb_table_add_default_atsc(tdmi);
break;
}
}
/**
* Setup FD + demux for a services PMT
*/
void
dvb_table_add_pmt(th_dvb_mux_instance_t *tdmi, int pmt_pid)
{
char pmtname[100];
snprintf(pmtname, sizeof(pmtname), "PMT(%d)", pmt_pid);
tdt_add(tdmi, 0x2, 0xff, dvb_pmt_callback, NULL, pmtname,
TDT_CRC | TDT_QUICKREQ | TDT_TDT, pmt_pid);
}
void
dvb_table_rem_pmt(th_dvb_mux_instance_t *tdmi, int pmt_pid)
{
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
th_dvb_table_t *tdt = NULL;
LIST_FOREACH(tdt, &tdmi->tdmi_tables, tdt_link)
if (tdt->tdt_pid == pmt_pid && tdt->tdt_callback == dvb_pmt_callback)
break;
if (tdt) dvb_tdt_destroy(tda, tdmi, tdt);
}
/**
*
*/
void
dvb_table_flush_all(th_dvb_mux_instance_t *tdmi)
{
th_dvb_adapter_t *tda = tdmi->tdmi_adapter;
th_dvb_table_t *tdt;
while((tdt = LIST_FIRST(&tdmi->tdmi_tables)) != NULL)
dvb_tdt_destroy(tda, tdmi, tdt);
}
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