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/*
* Simple MPEG parser to achieve network/service information.
*
* refered standards:
*
* ETSI EN 300 468
* ETSI TR 101 211
* ETSI ETR 211
* ITU-T H.222.0
*
* 2005-05-10 - Basic ATSC PSIP parsing support added
* ATSC Standard Revision B (A65/B)
*
* Thanks to Sean Device from Triveni for providing access to ATSC signals
* and to Kevin Fowlks for his independent ATSC scanning tool.
*
* Please contribute: It is possible that some descriptors for ATSC are
* not parsed yet and thus the result won't be complete.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <errno.h>
#include <signal.h>
#include <assert.h>
#include <glob.h>
#include <ctype.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
#include "list.h"
#include "diseqc.h"
#include "dump-zap.h"
#include "dump-vdr.h"
#include "scan.h"
#include "lnb.h"
#include "atsc_psip_section.h"
static char demux_devname[80];
static struct dvb_frontend_info fe_info = {
.type = -1
};
int verbosity = 2;
static int long_timeout;
static int current_tp_only;
static int get_other_nits;
static int vdr_dump_provider;
static int vdr_dump_channum;
static int no_ATSC_PSIP;
static int ATSC_type=1;
static int ca_select = -1;
static int serv_select = 7;
static int vdr_version = 3;
static struct lnb_types_st lnb_type;
static int unique_anon_services;
static enum fe_spectral_inversion spectral_inversion = INVERSION_AUTO;
enum table_type {
PAT,
PMT,
SDT,
NIT
};
enum format {
OUTPUT_ZAP,
OUTPUT_VDR,
OUTPUT_PIDS
};
static enum format output_format = OUTPUT_ZAP;
static int output_format_set = 0;
enum polarisation {
POLARISATION_HORIZONTAL = 0x00,
POLARISATION_VERTICAL = 0x01,
POLARISATION_CIRCULAR_LEFT = 0x02,
POLARISATION_CIRCULAR_RIGHT = 0x03
};
enum running_mode {
RM_NOT_RUNNING = 0x01,
RM_STARTS_SOON = 0x02,
RM_PAUSING = 0x03,
RM_RUNNING = 0x04
};
#define AUDIO_CHAN_MAX (32)
#define CA_SYSTEM_ID_MAX (16)
struct service {
struct list_head list;
int transport_stream_id;
int service_id;
char *provider_name;
char *service_name;
uint16_t pmt_pid;
uint16_t pcr_pid;
uint16_t video_pid;
uint16_t audio_pid[AUDIO_CHAN_MAX];
char audio_lang[AUDIO_CHAN_MAX][4];
int audio_num;
uint16_t ca_id[CA_SYSTEM_ID_MAX];
int ca_num;
uint16_t teletext_pid;
uint16_t subtitling_pid;
uint16_t ac3_pid;
unsigned int type : 8;
unsigned int scrambled : 1;
enum running_mode running;
void *priv;
int channel_num;
};
struct transponder {
struct list_head list;
struct list_head services;
int network_id;
int original_network_id;
int transport_stream_id;
enum fe_type type;
struct dvb_frontend_parameters param;
enum polarisation polarisation; /* only for DVB-S */
int orbital_pos; /* only for DVB-S */
unsigned int we_flag : 1; /* West/East Flag - only for DVB-S */
unsigned int scan_done : 1;
unsigned int last_tuning_failed : 1;
unsigned int other_frequency_flag : 1; /* DVB-T */
unsigned int wrong_frequency : 1; /* DVB-T with other_frequency_flag */
int n_other_f;
uint32_t *other_f; /* DVB-T freqeuency-list descriptor */
};
struct section_buf {
struct list_head list;
const char *dmx_devname;
unsigned int run_once : 1;
unsigned int segmented : 1; /* segmented by table_id_ext */
int fd;
int pid;
int table_id;
int table_id_ext;
int section_version_number;
uint8_t section_done[32];
int sectionfilter_done;
unsigned char buf[1024];
time_t timeout;
time_t start_time;
time_t running_time;
struct section_buf *next_seg; /* this is used to handle
* segmented tables (like NIT-other)
*/
};
static LIST_HEAD(scanned_transponders);
static LIST_HEAD(new_transponders);
static struct transponder *current_tp;
static void dump_dvb_parameters (FILE *f, struct transponder *p);
static void setup_filter (struct section_buf* s, const char *dmx_devname,
int pid, int tid, int tid_ext,
int run_once, int segmented, int timeout);
static void add_filter (struct section_buf *s);
static const char * fe_type2str(fe_type_t t);
/* According to the DVB standards, the combination of network_id and
* transport_stream_id should be unique, but in real life the satellite
* operators and broadcasters don't care enough to coordinate
* the numbering. Thus we identify TPs by frequency (dvbscan handles only
* one satellite at a time). Further complication: Different NITs on
* one satellite sometimes list the same TP with slightly different
* frequencies, so we have to search within some bandwidth.
*/
static struct transponder *alloc_transponder(uint32_t frequency)
{
struct transponder *tp = calloc(1, sizeof(*tp));
tp->param.frequency = frequency;
INIT_LIST_HEAD(&tp->list);
INIT_LIST_HEAD(&tp->services);
list_add_tail(&tp->list, &new_transponders);
return tp;
}
static int is_same_transponder(uint32_t f1, uint32_t f2)
{
uint32_t diff;
if (f1 == f2)
return 1;
diff = (f1 > f2) ? (f1 - f2) : (f2 - f1);
//FIXME: use symbolrate etc. to estimate bandwidth
if (diff < 2000) {
debug("f1 = %u is same TP as f2 = %u\n", f1, f2);
return 1;
}
return 0;
}
static struct transponder *find_transponder(uint32_t frequency)
{
struct list_head *pos;
struct transponder *tp;
list_for_each(pos, &scanned_transponders) {
tp = list_entry(pos, struct transponder, list);
if (current_tp_only)
return tp;
if (is_same_transponder(tp->param.frequency, frequency))
return tp;
}
list_for_each(pos, &new_transponders) {
tp = list_entry(pos, struct transponder, list);
if (is_same_transponder(tp->param.frequency, frequency))
return tp;
}
return NULL;
}
static void copy_transponder(struct transponder *d, struct transponder *s)
{
d->network_id = s->network_id;
d->original_network_id = s->original_network_id;
d->transport_stream_id = s->transport_stream_id;
d->type = s->type;
memcpy(&d->param, &s->param, sizeof(d->param));
d->polarisation = s->polarisation;
d->orbital_pos = s->orbital_pos;
d->we_flag = s->we_flag;
d->scan_done = s->scan_done;
d->last_tuning_failed = s->last_tuning_failed;
d->other_frequency_flag = s->other_frequency_flag;
d->n_other_f = s->n_other_f;
if (d->n_other_f) {
d->other_f = calloc(d->n_other_f, sizeof(uint32_t));
memcpy(d->other_f, s->other_f, d->n_other_f * sizeof(uint32_t));
}
else
d->other_f = NULL;
}
/* service_ids are guaranteed to be unique within one TP
* (the DVB standards say theay should be unique within one
* network, but in real life...)
*/
static struct service *alloc_service(struct transponder *tp, int service_id)
{
struct service *s = calloc(1, sizeof(*s));
INIT_LIST_HEAD(&s->list);
s->service_id = service_id;
s->transport_stream_id = tp->transport_stream_id;
list_add_tail(&s->list, &tp->services);
return s;
}
static struct service *find_service(struct transponder *tp, int service_id)
{
struct list_head *pos;
struct service *s;
list_for_each(pos, &tp->services) {
s = list_entry(pos, struct service, list);
if (s->service_id == service_id)
return s;
}
return NULL;
}
static void parse_ca_identifier_descriptor (const unsigned char *buf,
struct service *s)
{
unsigned char len = buf [1];
unsigned int i;
buf += 2;
if (len > sizeof(s->ca_id)) {
len = sizeof(s->ca_id);
warning("too many CA system ids\n");
}
memcpy(s->ca_id, buf, len);
for (i = 0; i < len / sizeof(s->ca_id[0]); i++)
moreverbose(" CA ID 0x%04x\n", s->ca_id[i]);
}
static void parse_iso639_language_descriptor (const unsigned char *buf, struct service *s)
{
unsigned char len = buf [1];
buf += 2;
if (len >= 4) {
debug(" LANG=%.3s %d\n", buf, buf[3]);
memcpy(s->audio_lang[s->audio_num], buf, 3);
#if 0
/* seems like the audio_type is wrong all over the place */
//if (buf[3] == 0) -> normal
if (buf[3] == 1)
s->audio_lang[s->audio_num][3] = '!'; /* clean effects (no language) */
else if (buf[3] == 2)
s->audio_lang[s->audio_num][3] = '?'; /* for the hearing impaired */
else if (buf[3] == 3)
s->audio_lang[s->audio_num][3] = '+'; /* visually impaired commentary */
#endif
}
}
static void parse_network_name_descriptor (const unsigned char *buf, void *dummy)
{
(void)dummy;
unsigned char len = buf [1];
info("Network Name '%.*s'\n", len, buf + 2);
}
static void parse_terrestrial_uk_channel_number (const unsigned char *buf, void *dummy)
{
(void)dummy;
int i, n, channel_num, service_id;
struct list_head *p1, *p2;
struct transponder *t;
struct service *s;
// 32 bits per record
n = buf[1] / 4;
if (n < 1)
return;
// desc id, desc len, (service id, service number)
buf += 2;
for (i = 0; i < n; i++) {
service_id = (buf[0]<<8)|(buf[1]&0xff);
channel_num = ((buf[2]&0x03)<<8)|(buf[3]&0xff);
debug("Service ID 0x%x has channel number %d ", service_id, channel_num);
list_for_each(p1, &scanned_transponders) {
t = list_entry(p1, struct transponder, list);
list_for_each(p2, &t->services) {
s = list_entry(p2, struct service, list);
if (s->service_id == service_id)
s->channel_num = channel_num;
}
}
buf += 4;
}
}
static long bcd32_to_cpu (const int b0, const int b1, const int b2, const int b3)
{
return ((b0 >> 4) & 0x0f) * 10000000 + (b0 & 0x0f) * 1000000 +
((b1 >> 4) & 0x0f) * 100000 + (b1 & 0x0f) * 10000 +
((b2 >> 4) & 0x0f) * 1000 + (b2 & 0x0f) * 100 +
((b3 >> 4) & 0x0f) * 10 + (b3 & 0x0f);
}
static const fe_code_rate_t fec_tab [8] = {
FEC_AUTO, FEC_1_2, FEC_2_3, FEC_3_4,
FEC_5_6, FEC_7_8, 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 void parse_cable_delivery_system_descriptor (const unsigned char *buf,
struct transponder *t)
{
if (!t) {
warning("cable_delivery_system_descriptor outside transport stream definition (ignored)\n");
return;
}
t->type = FE_QAM;
t->param.frequency = bcd32_to_cpu (buf[2], buf[3], buf[4], buf[5]);
t->param.frequency *= 100;
t->param.u.qam.fec_inner = fec_tab[buf[12] & 0x07];
t->param.u.qam.symbol_rate = 10 * bcd32_to_cpu (buf[9],
buf[10],
buf[11],
buf[12] & 0xf0);
if ((buf[8] & 0x0f) > 5)
t->param.u.qam.modulation = QAM_AUTO;
else
t->param.u.qam.modulation = qam_tab[buf[8] & 0x0f];
t->param.inversion = spectral_inversion;
if (verbosity >= 5) {
debug("%#04x/%#04x ", t->network_id, t->transport_stream_id);
dump_dvb_parameters (stderr, t);
if (t->scan_done)
dprintf(5, " (done)");
if (t->last_tuning_failed)
dprintf(5, " (tuning failed)");
dprintf(5, "\n");
}
}
static void parse_satellite_delivery_system_descriptor (const unsigned char *buf,
struct transponder *t)
{
if (!t) {
warning("satellite_delivery_system_descriptor outside transport stream definition (ignored)\n");
return;
}
t->type = FE_QPSK;
t->param.frequency = 10 * bcd32_to_cpu (buf[2], buf[3], buf[4], buf[5]);
t->param.u.qpsk.fec_inner = fec_tab[buf[12] & 0x07];
t->param.u.qpsk.symbol_rate = 10 * bcd32_to_cpu (buf[9],
buf[10],
buf[11],
buf[12] & 0xf0);
t->polarisation = (buf[8] >> 5) & 0x03;
t->param.inversion = spectral_inversion;
t->orbital_pos = bcd32_to_cpu (0x00, 0x00, buf[6], buf[7]);
t->we_flag = buf[8] >> 7;
if (verbosity >= 5) {
debug("%#04x/%#04x ", t->network_id, t->transport_stream_id);
dump_dvb_parameters (stderr, t);
if (t->scan_done)
dprintf(5, " (done)");
if (t->last_tuning_failed)
dprintf(5, " (tuning failed)");
dprintf(5, "\n");
}
}
static void parse_terrestrial_delivery_system_descriptor (const unsigned char *buf,
struct transponder *t)
{
static const fe_modulation_t m_tab [] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
static const fe_code_rate_t ofec_tab [8] = { FEC_1_2, FEC_2_3, FEC_3_4,
FEC_5_6, FEC_7_8 };
struct dvb_ofdm_parameters *o;
if (!t) {
warning("terrestrial_delivery_system_descriptor outside transport stream definition (ignored)\n");
return;
}
o = &t->param.u.ofdm;
t->type = FE_OFDM;
t->param.frequency = (buf[2] << 24) | (buf[3] << 16);
t->param.frequency |= (buf[4] << 8) | buf[5];
t->param.frequency *= 10;
t->param.inversion = spectral_inversion;
o->bandwidth = BANDWIDTH_8_MHZ + ((buf[6] >> 5) & 0x3);
o->constellation = m_tab[(buf[7] >> 6) & 0x3];
o->hierarchy_information = HIERARCHY_NONE + ((buf[7] >> 3) & 0x3);
if ((buf[7] & 0x7) > 4)
o->code_rate_HP = FEC_AUTO;
else
o->code_rate_HP = ofec_tab [buf[7] & 0x7];
if (((buf[8] >> 5) & 0x7) > 4)
o->code_rate_LP = FEC_AUTO;
else
o->code_rate_LP = ofec_tab [(buf[8] >> 5) & 0x7];
o->guard_interval = GUARD_INTERVAL_1_32 + ((buf[8] >> 3) & 0x3);
o->transmission_mode = (buf[8] & 0x2) ?
TRANSMISSION_MODE_8K :
TRANSMISSION_MODE_2K;
t->other_frequency_flag = (buf[8] & 0x01);
if (verbosity >= 5) {
debug("%#04x/%#04x ", t->network_id, t->transport_stream_id);
dump_dvb_parameters (stderr, t);
if (t->scan_done)
dprintf(5, " (done)");
if (t->last_tuning_failed)
dprintf(5, " (tuning failed)");
dprintf(5, "\n");
}
}
static void parse_frequency_list_descriptor (const unsigned char *buf,
struct transponder *t)
{
int n, i;
typeof(*t->other_f) f;
if (!t) {
warning("frequency_list_descriptor outside transport stream definition (ignored)\n");
return;
}
if (t->other_f)
return;
n = (buf[1] - 1) / 4;
if (n < 1 || (buf[2] & 0x03) != 3)
return;
t->other_f = calloc(n, sizeof(*t->other_f));
t->n_other_f = n;
buf += 3;
for (i = 0; i < n; i++) {
f = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
t->other_f[i] = f * 10;
buf += 4;
}
}
static void parse_service_descriptor (const unsigned char *buf, struct service *s)
{
unsigned char len;
unsigned char *src, *dest;
s->type = buf[2];
buf += 3;
len = *buf;
buf++;
if (s->provider_name)
free (s->provider_name);
s->provider_name = malloc (len + 1);
memcpy (s->provider_name, buf, len);
s->provider_name[len] = '\0';
/* remove control characters (FIXME: handle short/long name) */
/* FIXME: handle character set correctly (e.g. via iconv)
* c.f. EN 300 468 annex A */
for (src = dest = (unsigned char *) s->provider_name; *src; src++)
if (*src >= 0x20 && (*src < 0x80 || *src > 0x9f))
*dest++ = *src;
*dest = '\0';
if (!s->provider_name[0]) {
/* zap zero length names */
free (s->provider_name);
s->provider_name = 0;
}
if (s->service_name)
free (s->service_name);
buf += len;
len = *buf;
buf++;
s->service_name = malloc (len + 1);
memcpy (s->service_name, buf, len);
s->service_name[len] = '\0';
/* remove control characters (FIXME: handle short/long name) */
/* FIXME: handle character set correctly (e.g. via iconv)
* c.f. EN 300 468 annex A */
for (src = dest = (unsigned char *) s->service_name; *src; src++)
if (*src >= 0x20 && (*src < 0x80 || *src > 0x9f))
*dest++ = *src;
*dest = '\0';
if (!s->service_name[0]) {
/* zap zero length names */
free (s->service_name);
s->service_name = 0;
}
info("0x%04x 0x%04x: pmt_pid 0x%04x %s -- %s (%s%s)\n",
s->transport_stream_id,
s->service_id,
s->pmt_pid,
s->provider_name, s->service_name,
s->running == RM_NOT_RUNNING ? "not running" :
s->running == RM_STARTS_SOON ? "starts soon" :
s->running == RM_PAUSING ? "pausing" :
s->running == RM_RUNNING ? "running" : "???",
s->scrambled ? ", scrambled" : "");
}
static int find_descriptor(uint8_t tag, const unsigned char *buf,
int descriptors_loop_len,
const unsigned char **desc, int *desc_len)
{
while (descriptors_loop_len > 0) {
unsigned char descriptor_tag = buf[0];
unsigned char descriptor_len = buf[1] + 2;
if (!descriptor_len) {
warning("descriptor_tag == 0x%02x, len is 0\n", descriptor_tag);
break;
}
if (tag == descriptor_tag) {
if (desc)
*desc = buf;
if (desc_len)
*desc_len = descriptor_len;
return 1;
}
buf += descriptor_len;
descriptors_loop_len -= descriptor_len;
}
return 0;
}
static void parse_descriptors(enum table_type t, const unsigned char *buf,
int descriptors_loop_len, void *data)
{
while (descriptors_loop_len > 0) {
unsigned char descriptor_tag = buf[0];
unsigned char descriptor_len = buf[1] + 2;
if (!descriptor_len) {
warning("descriptor_tag == 0x%02x, len is 0\n", descriptor_tag);
break;
}
switch (descriptor_tag) {
case 0x0a:
if (t == PMT)
parse_iso639_language_descriptor (buf, data);
break;
case 0x40:
if (t == NIT)
parse_network_name_descriptor (buf, data);
break;
case 0x43:
if (t == NIT)
parse_satellite_delivery_system_descriptor (buf, data);
break;
case 0x44:
if (t == NIT)
parse_cable_delivery_system_descriptor (buf, data);
break;
case 0x48:
if (t == SDT)
parse_service_descriptor (buf, data);
break;
case 0x53:
if (t == SDT)
parse_ca_identifier_descriptor (buf, data);
break;
case 0x5a:
if (t == NIT)
parse_terrestrial_delivery_system_descriptor (buf, data);
break;
case 0x62:
if (t == NIT)
parse_frequency_list_descriptor (buf, data);
break;
case 0x83:
/* 0x83 is in the privately defined range of descriptor tags,
* so we parse this only if the user says so to avoid
* problems when 0x83 is something entirely different... */
if (t == NIT && vdr_dump_channum)
parse_terrestrial_uk_channel_number (buf, data);
break;
default:
verbosedebug("skip descriptor 0x%02x\n", descriptor_tag);
};
buf += descriptor_len;
descriptors_loop_len -= descriptor_len;
}
}
static void parse_pat(const unsigned char *buf, int section_length,
int transport_stream_id)
{
(void)transport_stream_id;
while (section_length > 0) {
struct service *s;
int service_id = (buf[0] << 8) | buf[1];
if (service_id == 0)
goto skip; /* nit pid entry */
/* SDT might have been parsed first... */
s = find_service(current_tp, service_id);
if (!s)
s = alloc_service(current_tp, service_id);
s->pmt_pid = ((buf[2] & 0x1f) << 8) | buf[3];
if (!s->priv && s->pmt_pid) {
s->priv = malloc(sizeof(struct section_buf));
setup_filter(s->priv, demux_devname,
s->pmt_pid, 0x02, s->service_id, 1, 0, 5);
add_filter (s->priv);
}
skip:
buf += 4;
section_length -= 4;
};
}
static void parse_pmt (const unsigned char *buf, int section_length, int service_id)
{
int program_info_len;
struct service *s;
char msg_buf[14 * AUDIO_CHAN_MAX + 1];
char *tmp;
int i;
s = find_service (current_tp, service_id);
if (!s) {
error("PMT for serivce_id 0x%04x was not in PAT\n", service_id);
return;
}
s->pcr_pid = ((buf[0] & 0x1f) << 8) | buf[1];
program_info_len = ((buf[2] & 0x0f) << 8) | buf[3];
buf += program_info_len + 4;
section_length -= program_info_len + 4;
while (section_length >= 5) {
int ES_info_len = ((buf[3] & 0x0f) << 8) | buf[4];
int elementary_pid = ((buf[1] & 0x1f) << 8) | buf[2];
switch (buf[0]) {
case 0x01:
case 0x02:
case 0x1b: /* H.264 video stream */
moreverbose(" VIDEO : PID 0x%04x\n", elementary_pid);
if (s->video_pid == 0)
s->video_pid = elementary_pid;
break;
case 0x03:
case 0x81: /* Audio per ATSC A/53B [2] Annex B */
case 0x0f: /* ADTS Audio Stream - usually AAC */
case 0x11: /* ISO/IEC 14496-3 Audio with LATM transport */
case 0x04:
moreverbose(" AUDIO : PID 0x%04x\n", elementary_pid);
if (s->audio_num < AUDIO_CHAN_MAX) {
s->audio_pid[s->audio_num] = elementary_pid;
parse_descriptors (PMT, buf + 5, ES_info_len, s);
s->audio_num++;
}
else
warning("more than %i audio channels, truncating\n",
AUDIO_CHAN_MAX);
break;
case 0x07:
moreverbose(" MHEG : PID 0x%04x\n", elementary_pid);
break;
case 0x0B:
moreverbose(" DSM-CC : PID 0x%04x\n", elementary_pid);
break;
case 0x06:
if (find_descriptor(0x56, buf + 5, ES_info_len, NULL, NULL)) {
moreverbose(" TELETEXT : PID 0x%04x\n", elementary_pid);
s->teletext_pid = elementary_pid;
break;
}
else if (find_descriptor(0x59, buf + 5, ES_info_len, NULL, NULL)) {
/* Note: The subtitling descriptor can also signal
* teletext subtitling, but then the teletext descriptor
* will also be present; so we can be quite confident
* that we catch DVB subtitling streams only here, w/o
* parsing the descriptor. */
moreverbose(" SUBTITLING: PID 0x%04x\n", elementary_pid);
s->subtitling_pid = elementary_pid;
break;
}
else if (find_descriptor(0x6a, buf + 5, ES_info_len, NULL, NULL)) {
moreverbose(" AC3 : PID 0x%04x\n", elementary_pid);
s->ac3_pid = elementary_pid;
break;
}
/* fall through */
default:
moreverbose(" OTHER : PID 0x%04x TYPE 0x%02x\n", elementary_pid, buf[0]);
};
buf += ES_info_len + 5;
section_length -= ES_info_len + 5;
};
tmp = msg_buf;
tmp += sprintf(tmp, "0x%04x (%.4s)", s->audio_pid[0], s->audio_lang[0]);
if (s->audio_num > AUDIO_CHAN_MAX) {
warning("more than %i audio channels: %i, truncating to %i\n",
AUDIO_CHAN_MAX, s->audio_num, AUDIO_CHAN_MAX);
s->audio_num = AUDIO_CHAN_MAX;
}
for (i=1; i<s->audio_num; i++)
tmp += sprintf(tmp, ", 0x%04x (%.4s)", s->audio_pid[i], s->audio_lang[i]);
debug("0x%04x 0x%04x: %s -- %s, pmt_pid 0x%04x, vpid 0x%04x, apid %s\n",
s->transport_stream_id,
s->service_id,
s->provider_name, s->service_name,
s->pmt_pid, s->video_pid, msg_buf);
}
static void parse_nit (const unsigned char *buf, int section_length, int network_id)
{
int descriptors_loop_len = ((buf[0] & 0x0f) << 8) | buf[1];
if (section_length < descriptors_loop_len + 4)
{
warning("section too short: network_id == 0x%04x, section_length == %i, "
"descriptors_loop_len == %i\n",
network_id, section_length, descriptors_loop_len);
return;
}
parse_descriptors (NIT, buf + 2, descriptors_loop_len, NULL);
section_length -= descriptors_loop_len + 4;
buf += descriptors_loop_len + 4;
while (section_length > 6) {
int transport_stream_id = (buf[0] << 8) | buf[1];
struct transponder *t, tn;
descriptors_loop_len = ((buf[4] & 0x0f) << 8) | buf[5];
if (section_length < descriptors_loop_len + 4)
{
warning("section too short: transport_stream_id == 0x%04x, "
"section_length == %i, descriptors_loop_len == %i\n",
transport_stream_id, section_length,
descriptors_loop_len);
break;
}
debug("transport_stream_id 0x%04x\n", transport_stream_id);
memset(&tn, 0, sizeof(tn));
tn.type = -1;
tn.network_id = network_id;
tn.original_network_id = (buf[2] << 8) | buf[3];
tn.transport_stream_id = transport_stream_id;
parse_descriptors (NIT, buf + 6, descriptors_loop_len, &tn);
if (tn.type == fe_info.type) {
/* only add if develivery_descriptor matches FE type */
t = find_transponder(tn.param.frequency);
if (!t)
t = alloc_transponder(tn.param.frequency);
copy_transponder(t, &tn);
}
section_length -= descriptors_loop_len + 6;
buf += descriptors_loop_len + 6;
}
}
static void parse_sdt (const unsigned char *buf, int section_length,
int transport_stream_id)
{
(void)transport_stream_id;
buf += 3; /* skip original network id + reserved field */
while (section_length >= 5) {
int service_id = (buf[0] << 8) | buf[1];
int descriptors_loop_len = ((buf[3] & 0x0f) << 8) | buf[4];
struct service *s;
if (section_length < descriptors_loop_len || !descriptors_loop_len)
{
warning("section too short: service_id == 0x%02x, section_length == %i, "
"descriptors_loop_len == %i\n",
service_id, section_length,
descriptors_loop_len);
break;
}
s = find_service(current_tp, service_id);
if (!s)
/* maybe PAT has not yet been parsed... */
s = alloc_service(current_tp, service_id);
s->running = (buf[3] >> 5) & 0x7;
s->scrambled = (buf[3] >> 4) & 1;
parse_descriptors (SDT, buf + 5, descriptors_loop_len, s);
section_length -= descriptors_loop_len + 5;
buf += descriptors_loop_len + 5;
};
}
/* ATSC PSIP VCT */
static void parse_atsc_service_loc_desc(struct service *s,const unsigned char *buf)
{
struct ATSC_service_location_descriptor d = read_ATSC_service_location_descriptor(buf);
int i;
unsigned char *b = (unsigned char *) buf+5;
s->pcr_pid = d.PCR_PID;
for (i=0; i < d.number_elements; i++) {
struct ATSC_service_location_element e = read_ATSC_service_location_element(b);
switch (e.stream_type) {
case 0x02: /* video */
s->video_pid = e.elementary_PID;
moreverbose(" VIDEO : PID 0x%04x\n", e.elementary_PID);
break;
case 0x81: /* ATSC audio */
if (s->audio_num < AUDIO_CHAN_MAX) {
s->audio_pid[s->audio_num] = e.elementary_PID;
s->audio_lang[s->audio_num][0] = (e.ISO_639_language_code >> 16) & 0xff;
s->audio_lang[s->audio_num][1] = (e.ISO_639_language_code >> 8) & 0xff;
s->audio_lang[s->audio_num][2] = e.ISO_639_language_code & 0xff;
s->audio_num++;
}
moreverbose(" AUDIO : PID 0x%04x lang: %s\n",e.elementary_PID,s->audio_lang[s->audio_num-1]);
break;
default:
warning("unhandled stream_type: %x\n",e.stream_type);
break;
};
b += 6;
}
}
static void parse_atsc_ext_chan_name_desc(struct service *s,const unsigned char *buf)
{
unsigned char *b = (unsigned char *) buf+2;
int i,j;
int num_str = b[0];
b++;
for (i = 0; i < num_str; i++) {
int num_seg = b[3];
b += 4; /* skip lang code */
for (j = 0; j < num_seg; j++) {
int comp_type = b[0],/* mode = b[1],*/ num_bytes = b[2];
switch (comp_type) {
case 0x00:
if (s->service_name)
free(s->service_name);
s->service_name = malloc(num_bytes * sizeof(char) + 1);
memcpy(s->service_name,&b[3],num_bytes);
s->service_name[num_bytes] = '\0';
break;
default:
warning("compressed strings are not supported yet\n");
break;
}
b += 3 + num_bytes;
}
}
}
static void parse_psip_descriptors(struct service *s,const unsigned char *buf,int len)
{
unsigned char *b = (unsigned char *) buf;
int desc_len;
while (len > 0) {
desc_len = b[1];
switch (b[0]) {
case ATSC_SERVICE_LOCATION_DESCRIPTOR_ID:
parse_atsc_service_loc_desc(s,b);
break;
case ATSC_EXTENDED_CHANNEL_NAME_DESCRIPTOR_ID:
parse_atsc_ext_chan_name_desc(s,b);
break;
default:
warning("unhandled psip descriptor: %02x\n",b[0]);
break;
}
b += 2 + desc_len;
len -= 2 + desc_len;
}
}
static void parse_psip_vct (const unsigned char *buf, int section_length,
int table_id, int transport_stream_id)
{
(void)section_length;
(void)table_id;
(void)transport_stream_id;
/* int protocol_version = buf[0];*/
int num_channels_in_section = buf[1];
int i;
int pseudo_id = 0xffff;
unsigned char *b = (unsigned char *) buf + 2;
for (i = 0; i < num_channels_in_section; i++) {
struct service *s;
struct tvct_channel ch = read_tvct_channel(b);
switch (ch.service_type) {
case 0x01:
info("analog channels won't be put info channels.conf\n");
break;
case 0x02: /* ATSC TV */
case 0x03: /* ATSC Radio */
break;
case 0x04: /* ATSC Data */
default:
continue;
}
if (ch.program_number == 0)
ch.program_number = --pseudo_id;
s = find_service(current_tp, ch.program_number);
if (!s)
s = alloc_service(current_tp, ch.program_number);
if (s->service_name)
free(s->service_name);
s->service_name = malloc(7*sizeof(unsigned char));
/* TODO find a better solution to convert UTF-16 */
s->service_name[0] = ch.short_name0;
s->service_name[1] = ch.short_name1;
s->service_name[2] = ch.short_name2;
s->service_name[3] = ch.short_name3;
s->service_name[4] = ch.short_name4;
s->service_name[5] = ch.short_name5;
s->service_name[6] = ch.short_name6;
parse_psip_descriptors(s,&b[32],ch.descriptors_length);
s->channel_num = ch.major_channel_number << 10 | ch.minor_channel_number;
if (ch.hidden) {
s->running = RM_NOT_RUNNING;
info("service is not running, pseudo program_number.");
} else {
s->running = RM_RUNNING;
info("service is running.");
}
info(" Channel number: %d:%d. Name: '%s'\n",
ch.major_channel_number, ch.minor_channel_number,s->service_name);
b += 32 + ch.descriptors_length;
}
}
static int get_bit (uint8_t *bitfield, int bit)
{
return (bitfield[bit/8] >> (bit % 8)) & 1;
}
static void set_bit (uint8_t *bitfield, int bit)
{
bitfield[bit/8] |= 1 << (bit % 8);
}
/**
* returns 0 when more sections are expected
* 1 when all sections are read on this pid
* -1 on invalid table id
*/
static int parse_section (struct section_buf *s)
{
const unsigned char *buf = s->buf;
int table_id;
int section_length;
int table_id_ext;
int section_version_number;
int section_number;
int last_section_number;
int i;
table_id = buf[0];
if (s->table_id != table_id)
return -1;
section_length = ((buf[1] & 0x0f) << 8) | buf[2];
table_id_ext = (buf[3] << 8) | buf[4];
section_version_number = (buf[5] >> 1) & 0x1f;
section_number = buf[6];
last_section_number = buf[7];
if (s->segmented && s->table_id_ext != -1 && s->table_id_ext != table_id_ext) {
/* find or allocate actual section_buf matching table_id_ext */
while (s->next_seg) {
s = s->next_seg;
if (s->table_id_ext == table_id_ext)
break;
}
if (s->table_id_ext != table_id_ext) {
assert(s->next_seg == NULL);
s->next_seg = calloc(1, sizeof(struct section_buf));
s->next_seg->segmented = s->segmented;
s->next_seg->run_once = s->run_once;
s->next_seg->timeout = s->timeout;
s = s->next_seg;
s->table_id = table_id;
s->table_id_ext = table_id_ext;
s->section_version_number = section_version_number;
}
}
if (s->section_version_number != section_version_number ||
s->table_id_ext != table_id_ext) {
struct section_buf *next_seg = s->next_seg;
if (s->section_version_number != -1 && s->table_id_ext != -1)
debug("section version_number or table_id_ext changed "
"%d -> %d / %04x -> %04x\n",
s->section_version_number, section_version_number,
s->table_id_ext, table_id_ext);
s->table_id_ext = table_id_ext;
s->section_version_number = section_version_number;
s->sectionfilter_done = 0;
memset (s->section_done, 0, sizeof(s->section_done));
s->next_seg = next_seg;
}
buf += 8; /* past generic table header */
section_length -= 5 + 4; /* header + crc */
if (section_length < 0) {
warning("truncated section (PID 0x%04x, lenght %d)",
s->pid, section_length + 9);
return 0;
}
if (!get_bit(s->section_done, section_number)) {
set_bit (s->section_done, section_number);
debug("pid 0x%02x tid 0x%02x table_id_ext 0x%04x, "
"%i/%i (version %i)\n",
s->pid, table_id, table_id_ext, section_number,
last_section_number, section_version_number);
switch (table_id) {
case 0x00:
verbose("PAT\n");
parse_pat (buf, section_length, table_id_ext);
break;
case 0x02:
verbose("PMT 0x%04x for service 0x%04x\n", s->pid, table_id_ext);
parse_pmt (buf, section_length, table_id_ext);
break;
case 0x41:
verbose("////////////////////////////////////////////// NIT other\n");
case 0x40:
verbose("NIT (%s TS)\n", table_id == 0x40 ? "actual":"other");
parse_nit (buf, section_length, table_id_ext);
break;
case 0x42:
case 0x46:
verbose("SDT (%s TS)\n", table_id == 0x42 ? "actual":"other");
parse_sdt (buf, section_length, table_id_ext);
break;
case 0xc8:
case 0xc9:
verbose("ATSC VCT\n");
parse_psip_vct(buf, section_length, table_id, table_id_ext);
break;
default:
;
};
for (i = 0; i <= last_section_number; i++)
if (get_bit (s->section_done, i) == 0)
break;
if (i > last_section_number)
s->sectionfilter_done = 1;
}
if (s->segmented) {
/* always wait for timeout; this is because we don't now how
* many segments there are
*/
return 0;
}
else if (s->sectionfilter_done)
return 1;
return 0;
}
static int read_sections (struct section_buf *s)
{
int section_length, count;
if (s->sectionfilter_done && !s->segmented)
return 1;
/* the section filter API guarantess that we get one full section
* per read(), provided that the buffer is large enough (it is)
*/
if (((count = read (s->fd, s->buf, sizeof(s->buf))) < 0) && errno == EOVERFLOW)
count = read (s->fd, s->buf, sizeof(s->buf));
if (count < 0) {
errorn("read_sections: read error");
return -1;
}
if (count < 4)
return -1;
section_length = ((s->buf[1] & 0x0f) << 8) | s->buf[2];
if (count != section_length + 3)
return -1;
if (parse_section(s) == 1)
return 1;
return 0;
}
static LIST_HEAD(running_filters);
static LIST_HEAD(waiting_filters);
static int n_running;
#define MAX_RUNNING 27
static struct pollfd poll_fds[MAX_RUNNING];
static struct section_buf* poll_section_bufs[MAX_RUNNING];
static void setup_filter (struct section_buf* s, const char *dmx_devname,
int pid, int tid, int tid_ext,
int run_once, int segmented, int timeout)
{
memset (s, 0, sizeof(struct section_buf));
s->fd = -1;
s->dmx_devname = dmx_devname;
s->pid = pid;
s->table_id = tid;
s->run_once = run_once;
s->segmented = segmented;
if (long_timeout)
s->timeout = 5 * timeout;
else
s->timeout = timeout;
s->table_id_ext = tid_ext;
s->section_version_number = -1;
INIT_LIST_HEAD (&s->list);
}
static void update_poll_fds(void)
{
struct list_head *p;
struct section_buf* s;
int i;
memset(poll_section_bufs, 0, sizeof(poll_section_bufs));
for (i = 0; i < MAX_RUNNING; i++)
poll_fds[i].fd = -1;
i = 0;
list_for_each (p, &running_filters) {
if (i >= MAX_RUNNING)
fatal("too many poll_fds\n");
s = list_entry (p, struct section_buf, list);
if (s->fd == -1)
fatal("s->fd == -1 on running_filters\n");
verbosedebug("poll fd %d\n", s->fd);
poll_fds[i].fd = s->fd;
poll_fds[i].events = POLLIN;
poll_fds[i].revents = 0;
poll_section_bufs[i] = s;
i++;
}
if (i != n_running)
fatal("n_running is hosed\n");
}
static int start_filter (struct section_buf* s)
{
struct dmx_sct_filter_params f;
if (n_running >= MAX_RUNNING)
goto err0;
if ((s->fd = open (s->dmx_devname, O_RDWR | O_NONBLOCK)) < 0)
goto err0;
verbosedebug("start filter pid 0x%04x table_id 0x%02x\n", s->pid, s->table_id);
memset(&f, 0, sizeof(f));
f.pid = (uint16_t) s->pid;
if (s->table_id < 0x100 && s->table_id > 0) {
f.filter.filter[0] = (uint8_t) s->table_id;
f.filter.mask[0] = 0xff;
}
if (s->table_id_ext < 0x10000 && s->table_id_ext > 0) {
f.filter.filter[1] = (uint8_t) ((s->table_id_ext >> 8) & 0xff);
f.filter.filter[2] = (uint8_t) (s->table_id_ext & 0xff);
f.filter.mask[1] = 0xff;
f.filter.mask[2] = 0xff;
}
f.timeout = 0;
f.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
if (ioctl(s->fd, DMX_SET_FILTER, &f) == -1) {
errorn ("ioctl DMX_SET_FILTER failed");
goto err1;
}
s->sectionfilter_done = 0;
time(&s->start_time);
list_del_init (&s->list); /* might be in waiting filter list */
list_add (&s->list, &running_filters);
n_running++;
update_poll_fds();
return 0;
err1:
ioctl (s->fd, DMX_STOP);
close (s->fd);
err0:
return -1;
}
static void stop_filter (struct section_buf *s)
{
verbosedebug("stop filter pid 0x%04x\n", s->pid);
ioctl (s->fd, DMX_STOP);
close (s->fd);
s->fd = -1;
list_del (&s->list);
s->running_time += time(NULL) - s->start_time;
n_running--;
update_poll_fds();
}
static void add_filter (struct section_buf *s)
{
verbosedebug("add filter pid 0x%04x\n", s->pid);
if (start_filter (s))
list_add_tail (&s->list, &waiting_filters);
}
static void remove_filter (struct section_buf *s)
{
verbosedebug("remove filter pid 0x%04x\n", s->pid);
stop_filter (s);
while (!list_empty(&waiting_filters)) {
struct list_head *next = waiting_filters.next;
s = list_entry (next, struct section_buf, list);
if (start_filter (s))
break;
};
}
static void read_filters (void)
{
struct section_buf *s;
int i, n, done;
n = poll(poll_fds, n_running, 1000);
if (n == -1)
errorn("poll");
for (i = 0; i < n_running; i++) {
s = poll_section_bufs[i];
if (!s)
fatal("poll_section_bufs[%d] is NULL\n", i);
if (poll_fds[i].revents)
done = read_sections (s) == 1;
else
done = 0; /* timeout */
if (done || time(NULL) > s->start_time + s->timeout) {
if (s->run_once) {
if (done)
verbosedebug("filter done pid 0x%04x\n", s->pid);
else
warning("filter timeout pid 0x%04x\n", s->pid);
remove_filter (s);
}
}
}
}
static int mem_is_zero (const void *mem, int size)
{
const char *p = mem;
int i;
for (i=0; i<size; i++) {
if (p[i] != 0x00)
return 0;
}
return 1;
}
static int switch_pos = 0;
static int __tune_to_transponder (int frontend_fd, struct transponder *t)
{
struct dvb_frontend_parameters p;
fe_status_t s;
int i;
current_tp = t;
if (mem_is_zero (&t->param, sizeof(struct dvb_frontend_parameters)))
return -1;
memcpy (&p, &t->param, sizeof(struct dvb_frontend_parameters));
if (verbosity >= 1) {
dprintf(1, ">>> tune to: ");
dump_dvb_parameters (stderr, t);
if (t->last_tuning_failed)
dprintf(1, " (tuning failed)");
dprintf(1, "\n");
}
if (t->type == FE_QPSK) {
if (lnb_type.high_val) {
if (lnb_type.switch_val) {
/* Voltage-controlled switch */
int hiband = 0;
if (p.frequency >= lnb_type.switch_val)
hiband = 1;
setup_switch (frontend_fd,
switch_pos,
t->polarisation == POLARISATION_VERTICAL ? 0 : 1,
hiband);
usleep(50000);
if (hiband)
p.frequency = abs(p.frequency - lnb_type.high_val);
else
p.frequency = abs(p.frequency - lnb_type.low_val);
} else {
/* C-Band Multipoint LNBf */
p.frequency = abs(p.frequency - (t->polarisation == POLARISATION_VERTICAL ?
lnb_type.low_val: lnb_type.high_val));
}
} else {
/* Monopoint LNBf without switch */
p.frequency = abs(p.frequency - lnb_type.low_val);
}
if (verbosity >= 2)
dprintf(1,"DVB-S IF freq is %d\n",p.frequency);
}
if (ioctl(frontend_fd, FE_SET_FRONTEND, &p) == -1) {
errorn("Setting frontend parameters failed");
return -1;
}
for (i = 0; i < 10; i++) {
usleep (200000);
if (ioctl(frontend_fd, FE_READ_STATUS, &s) == -1) {
errorn("FE_READ_STATUS failed");
return -1;
}
verbose(">>> tuning status == 0x%02x\n", s);
if (s & FE_HAS_LOCK) {
t->last_tuning_failed = 0;
return 0;
}
}
warning(">>> tuning failed!!!\n");
t->last_tuning_failed = 1;
return -1;
}
static int tune_to_transponder (int frontend_fd, struct transponder *t)
{
/* move TP from "new" to "scanned" list */
list_del_init(&t->list);
list_add_tail(&t->list, &scanned_transponders);
t->scan_done = 1;
if (t->type != fe_info.type) {
warning("frontend type (%s) is not compatible with requested tuning type (%s)\n",
fe_type2str(fe_info.type),fe_type2str(t->type));
/* ignore cable descriptors in sat NIT and vice versa */
t->last_tuning_failed = 1;
return -1;
}
if (__tune_to_transponder (frontend_fd, t) == 0)
return 0;
return __tune_to_transponder (frontend_fd, t);
}
static int tune_to_next_transponder (int frontend_fd)
{
struct list_head *pos, *tmp;
struct transponder *t, *to;
uint32_t freq;
list_for_each_safe(pos, tmp, &new_transponders) {
t = list_entry (pos, struct transponder, list);
retry:
if (tune_to_transponder (frontend_fd, t) == 0)
return 0;
next:
if (t->other_frequency_flag && t->other_f && t->n_other_f) {
/* check if the alternate freqeuncy is really new to us */
freq = t->other_f[t->n_other_f - 1];
t->n_other_f--;
if (find_transponder(freq))
goto next;
/* remember tuning to the old frequency failed */
to = calloc(1, sizeof(*to));
to->param.frequency = t->param.frequency;
to->wrong_frequency = 1;
INIT_LIST_HEAD(&to->list);
INIT_LIST_HEAD(&to->services);
list_add_tail(&to->list, &scanned_transponders);
copy_transponder(to, t);
t->param.frequency = freq;
info("retrying with f=%d\n", t->param.frequency);
goto retry;
}
}
return -1;
}
struct strtab {
const char *str;
int val;
};
static int str2enum(const char *str, const struct strtab *tab, int deflt)
{
while (tab->str) {
if (!strcmp(tab->str, str))
return tab->val;
tab++;
}
error("invalid enum value '%s'\n", str);
return deflt;
}
static const char * enum2str(int v, const struct strtab *tab, const char *deflt)
{
while (tab->str) {
if (v == tab->val)
return tab->str;
tab++;
}
error("invalid enum value '%d'\n", v);
return deflt;
}
static enum fe_code_rate str2fec(const char *fec)
{
struct strtab fectab[] = {
{ "NONE", FEC_NONE },
{ "1/2", FEC_1_2 },
{ "2/3", FEC_2_3 },
{ "3/4", FEC_3_4 },
{ "4/5", FEC_4_5 },
{ "5/6", FEC_5_6 },
{ "6/7", FEC_6_7 },
{ "7/8", FEC_7_8 },
{ "8/9", FEC_8_9 },
{ "AUTO", FEC_AUTO },
{ NULL, 0 }
};
return str2enum(fec, fectab, FEC_AUTO);
}
static enum fe_modulation str2qam(const char *qam)
{
struct strtab qamtab[] = {
{ "QPSK", QPSK },
{ "QAM16", QAM_16 },
{ "QAM32", QAM_32 },
{ "QAM64", QAM_64 },
{ "QAM128", QAM_128 },
{ "QAM256", QAM_256 },
{ "AUTO", QAM_AUTO },
{ "8VSB", VSB_8 },
{ "16VSB", VSB_16 },
{ NULL, 0 }
};
return str2enum(qam, qamtab, QAM_AUTO);
}
static enum fe_bandwidth str2bandwidth(const char *bw)
{
struct strtab bwtab[] = {
{ "8MHz", BANDWIDTH_8_MHZ },
{ "7MHz", BANDWIDTH_7_MHZ },
{ "6MHz", BANDWIDTH_6_MHZ },
{ "AUTO", BANDWIDTH_AUTO },
{ NULL, 0 }
};
return str2enum(bw, bwtab, BANDWIDTH_AUTO);
}
static enum fe_transmit_mode str2mode(const char *mode)
{
struct strtab modetab[] = {
{ "2k", TRANSMISSION_MODE_2K },
{ "8k", TRANSMISSION_MODE_8K },
{ "AUTO", TRANSMISSION_MODE_AUTO },
{ NULL, 0 }
};
return str2enum(mode, modetab, TRANSMISSION_MODE_AUTO);
}
static enum fe_guard_interval str2guard(const char *guard)
{
struct strtab guardtab[] = {
{ "1/32", GUARD_INTERVAL_1_32 },
{ "1/16", GUARD_INTERVAL_1_16 },
{ "1/8", GUARD_INTERVAL_1_8 },
{ "1/4", GUARD_INTERVAL_1_4 },
{ "AUTO", GUARD_INTERVAL_AUTO },
{ NULL, 0 }
};
return str2enum(guard, guardtab, GUARD_INTERVAL_AUTO);
}
static enum fe_hierarchy str2hier(const char *hier)
{
struct strtab hiertab[] = {
{ "NONE", HIERARCHY_NONE },
{ "1", HIERARCHY_1 },
{ "2", HIERARCHY_2 },
{ "4", HIERARCHY_4 },
{ "AUTO", HIERARCHY_AUTO },
{ NULL, 0 }
};
return str2enum(hier, hiertab, HIERARCHY_AUTO);
}
static const char * fe_type2str(fe_type_t t)
{
struct strtab typetab[] = {
{ "QPSK", FE_QPSK,},
{ "QAM", FE_QAM, },
{ "OFDM", FE_OFDM,},
{ "ATSC", FE_ATSC,},
{ NULL, 0 }
};
return enum2str(t, typetab, "UNK");
}
static int tune_initial (int frontend_fd, const char *initial)
{
FILE *inif;
unsigned int f, sr;
char buf[200];
char pol[20], fec[20], qam[20], bw[20], fec2[20], mode[20], guard[20], hier[20];
struct transponder *t;
inif = fopen(initial, "r");
if (!inif) {
error("cannot open '%s': %d %m\n", initial, errno);
return -1;
}
while (fgets(buf, sizeof(buf), inif)) {
if (buf[0] == '#' || buf[0] == '\n')
;
else if (sscanf(buf, "S %u %1[HVLR] %u %4s\n", &f, pol, &sr, fec) == 4) {
t = alloc_transponder(f);
t->type = FE_QPSK;
switch(pol[0]) {
case 'H':
case 'L':
t->polarisation = POLARISATION_HORIZONTAL;
break;
default:
t->polarisation = POLARISATION_VERTICAL;;
break;
}
t->param.inversion = spectral_inversion;
t->param.u.qpsk.symbol_rate = sr;
t->param.u.qpsk.fec_inner = str2fec(fec);
info("initial transponder %u %c %u %d\n",
t->param.frequency,
pol[0], sr,
t->param.u.qpsk.fec_inner);
}
else if (sscanf(buf, "C %u %u %4s %6s\n", &f, &sr, fec, qam) == 4) {
t = alloc_transponder(f);
t->type = FE_QAM;
t->param.inversion = spectral_inversion;
t->param.u.qam.symbol_rate = sr;
t->param.u.qam.fec_inner = str2fec(fec);
t->param.u.qam.modulation = str2qam(qam);
info("initial transponder %u %u %d %d\n",
t->param.frequency,
sr,
t->param.u.qam.fec_inner,
t->param.u.qam.modulation);
}
else if (sscanf(buf, "T %u %4s %4s %4s %7s %4s %4s %4s\n",
&f, bw, fec, fec2, qam, mode, guard, hier) == 8) {
t = alloc_transponder(f);
t->type = FE_OFDM;
t->param.inversion = spectral_inversion;
t->param.u.ofdm.bandwidth = str2bandwidth(bw);
t->param.u.ofdm.code_rate_HP = str2fec(fec);
if (t->param.u.ofdm.code_rate_HP == FEC_NONE)
t->param.u.ofdm.code_rate_HP = FEC_AUTO;
t->param.u.ofdm.code_rate_LP = str2fec(fec2);
if (t->param.u.ofdm.code_rate_LP == FEC_NONE)
t->param.u.ofdm.code_rate_LP = FEC_AUTO;
t->param.u.ofdm.constellation = str2qam(qam);
t->param.u.ofdm.transmission_mode = str2mode(mode);
t->param.u.ofdm.guard_interval = str2guard(guard);
t->param.u.ofdm.hierarchy_information = str2hier(hier);
info("initial transponder %u %d %d %d %d %d %d %d\n",
t->param.frequency,
t->param.u.ofdm.bandwidth,
t->param.u.ofdm.code_rate_HP,
t->param.u.ofdm.code_rate_LP,
t->param.u.ofdm.constellation,
t->param.u.ofdm.transmission_mode,
t->param.u.ofdm.guard_interval,
t->param.u.ofdm.hierarchy_information);
}
else if (sscanf(buf, "A %u %7s\n",
&f,qam) == 2) {
t = alloc_transponder(f);
t->type = FE_ATSC;
t->param.u.vsb.modulation = str2qam(qam);
} else
error("cannot parse'%s'\n", buf);
}
fclose(inif);
return tune_to_next_transponder(frontend_fd);
}
static void scan_tp_atsc(void)
{
struct section_buf s0,s1,s2;
if (no_ATSC_PSIP) {
setup_filter(&s0, demux_devname, 0x00, 0x00, -1, 1, 0, 5); /* PAT */
add_filter(&s0);
} else {
if (ATSC_type & 0x1) {
setup_filter(&s0, demux_devname, 0x1ffb, 0xc8, -1, 1, 0, 5); /* terrestrial VCT */
add_filter(&s0);
}
if (ATSC_type & 0x2) {
setup_filter(&s1, demux_devname, 0x1ffb, 0xc9, -1, 1, 0, 5); /* cable VCT */
add_filter(&s1);
}
setup_filter(&s2, demux_devname, 0x00, 0x00, -1, 1, 0, 5); /* PAT */
add_filter(&s2);
}
do {
read_filters ();
} while (!(list_empty(&running_filters) &&
list_empty(&waiting_filters)));
}
static void scan_tp_dvb (void)
{
struct section_buf s0;
struct section_buf s1;
struct section_buf s2;
struct section_buf s3;
/**
* filter timeouts > min repetition rates specified in ETR211
*/
setup_filter (&s0, demux_devname, 0x00, 0x00, -1, 1, 0, 5); /* PAT */
setup_filter (&s1, demux_devname, 0x11, 0x42, -1, 1, 0, 5); /* SDT */
add_filter (&s0);
add_filter (&s1);
if (!current_tp_only || output_format != OUTPUT_PIDS) {
setup_filter (&s2, demux_devname, 0x10, 0x40, -1, 1, 0, 15); /* NIT */
add_filter (&s2);
if (get_other_nits) {
/* get NIT-others
* Note: There is more than one NIT-other: one per
* network, separated by the network_id.
*/
setup_filter (&s3, demux_devname, 0x10, 0x41, -1, 1, 1, 15);
add_filter (&s3);
}
}
do {
read_filters ();
} while (!(list_empty(&running_filters) &&
list_empty(&waiting_filters)));
}
static void scan_tp(void)
{
switch(fe_info.type) {
case FE_QPSK:
case FE_QAM:
case FE_OFDM:
scan_tp_dvb();
break;
case FE_ATSC:
scan_tp_atsc();
break;
default:
break;
}
}
static void scan_network (int frontend_fd, const char *initial)
{
if (tune_initial (frontend_fd, initial) < 0) {
error("initial tuning failed\n");
return;
}
do {
scan_tp();
} while (tune_to_next_transponder(frontend_fd) == 0);
}
static void pids_dump_service_parameter_set(FILE *f, struct service *s)
{
int i;
fprintf(f, "%-24.24s (0x%04x) %02x: ", s->service_name, s->service_id, s->type);
if (!s->pcr_pid || (s->type > 2))
fprintf(f, " ");
else if (s->pcr_pid == s->video_pid)
fprintf(f, "PCR == V ");
else if ((s->audio_num == 1) && (s->pcr_pid == s->audio_pid[0]))
fprintf(f, "PCR == A ");
else
fprintf(f, "PCR 0x%04x ", s->pcr_pid);
if (s->video_pid)
fprintf(f, "V 0x%04x", s->video_pid);
else
fprintf(f, " ");
if (s->audio_num)
fprintf(f, " A");
for (i = 0; i < s->audio_num; i++) {
fprintf(f, " 0x%04x", s->audio_pid[i]);
if (s->audio_lang[i][0])
fprintf(f, " (%.3s)", s->audio_lang[i]);
else if (s->audio_num == 1)
fprintf(f, " ");
}
if (s->teletext_pid)
fprintf(f, " TT 0x%04x", s->teletext_pid);
if (s->ac3_pid)
fprintf(f, " AC3 0x%04x", s->ac3_pid);
if (s->subtitling_pid)
fprintf(f, " SUB 0x%04x", s->subtitling_pid);
fprintf(f, "\n");
}
static char sat_polarisation (struct transponder *t)
{
return t->polarisation == POLARISATION_VERTICAL ? 'v' : 'h';
}
static int sat_number (struct transponder *t)
{
(void) t;
return switch_pos;
}
static void dump_lists (void)
{
struct list_head *p1, *p2;
struct transponder *t;
struct service *s;
int n = 0, i;
char sn[20];
int anon_services = 0;
list_for_each(p1, &scanned_transponders) {
t = list_entry(p1, struct transponder, list);
if (t->wrong_frequency)
continue;
list_for_each(p2, &t->services) {
n++;
}
}
info("dumping lists (%d services)\n", n);
list_for_each(p1, &scanned_transponders) {
t = list_entry(p1, struct transponder, list);
if (t->wrong_frequency)
continue;
list_for_each(p2, &t->services) {
s = list_entry(p2, struct service, list);
if (!s->service_name) {
/* not in SDT */
if (unique_anon_services)
snprintf(sn, sizeof(sn), "[%03x-%04x]",
anon_services, s->service_id);
else
snprintf(sn, sizeof(sn), "[%04x]",
s->service_id);
s->service_name = strdup(sn);
anon_services++;
}
/* ':' is field separator in szap and vdr service lists */
for (i = 0; s->service_name[i]; i++) {
if (s->service_name[i] == ':')
s->service_name[i] = ' ';
}
for (i = 0; s->provider_name && s->provider_name[i]; i++) {
if (s->provider_name[i] == ':')
s->provider_name[i] = ' ';
}
if (s->video_pid && !(serv_select & 1))
continue; /* no TV services */
if (!s->video_pid && s->audio_num && !(serv_select & 2))
continue; /* no radio services */
if (!s->video_pid && !s->audio_num && !(serv_select & 4))
continue; /* no data/other services */
if (s->scrambled && !ca_select)
continue; /* FTA only */
switch (output_format)
{
case OUTPUT_PIDS:
pids_dump_service_parameter_set (stdout, s);
break;
case OUTPUT_VDR:
vdr_dump_service_parameter_set (stdout,
s->service_name,
s->provider_name,
t->type,
&t->param,
sat_polarisation(t),
s->video_pid,
s->pcr_pid,
s->audio_pid,
s->audio_lang,
s->audio_num,
s->teletext_pid,
s->scrambled,
//FIXME: s->subtitling_pid
s->ac3_pid,
s->service_id,
t->original_network_id,
s->transport_stream_id,
t->orbital_pos,
t->we_flag,
vdr_dump_provider,
ca_select,
vdr_version,
vdr_dump_channum,
s->channel_num);
break;
case OUTPUT_ZAP:
zap_dump_service_parameter_set (stdout,
s->service_name,
t->type,
&t->param,
sat_polarisation(t),
sat_number(t),
s->video_pid,
s->audio_pid,
s->service_id);
default:
break;
}
}
}
info("Done.\n");
}
static void show_existing_tuning_data_files(void)
{
#ifndef DATADIR
#define DATADIR "/usr/local/share"
#endif
static const char* prefixlist[] = { DATADIR "/dvb", "/etc/dvb",
DATADIR "/doc/packages/dvb", 0 };
unsigned int i;
const char **prefix;
fprintf(stderr, "initial tuning data files:\n");
for (prefix = prefixlist; *prefix; prefix++) {
glob_t globbuf;
char* globspec = malloc (strlen(*prefix)+9);
strcpy (globspec, *prefix); strcat (globspec, "/dvb-?/*");
if (! glob (globspec, 0, 0, &globbuf)) {
for (i=0; i < globbuf.gl_pathc; i++)
fprintf(stderr, " file: %s\n", globbuf.gl_pathv[i]);
}
free (globspec);
globfree (&globbuf);
}
}
static void handle_sigint(int sig)
{
(void)sig;
error("interrupted by SIGINT, dumping partial result...\n");
dump_lists();
exit(2);
}
static const char *usage = "\n"
"usage: %s [options...] [-c | initial-tuning-data-file]\n"
" atsc/dvbscan doesn't do frequency scans, hence it needs initial\n"
" tuning data for at least one transponder/channel.\n"
" -c scan on currently tuned transponder only\n"
" -v verbose (repeat for more)\n"
" -q quiet (repeat for less)\n"
" -a N use DVB /dev/dvb/adapterN/\n"
" -f N use DVB /dev/dvb/adapter?/frontendN\n"
" -d N use DVB /dev/dvb/adapter?/demuxN\n"
" -s N use DiSEqC switch position N (DVB-S only)\n"
" -i N spectral inversion setting (0: off, 1: on, 2: auto [default])\n"
" -n evaluate NIT-other for full network scan (slow!)\n"
" -5 multiply all filter timeouts by factor 5\n"
" for non-DVB-compliant section repitition rates\n"
" -o fmt output format: 'zap' (default), 'vdr' or 'pids' (default with -c)\n"
" -x N Conditional Access, (default -1)\n"
" N=0 gets only FTA channels\n"
" N=-1 gets all channels\n"
" N=xxx sets ca field in vdr output to :xxx:\n"
" -t N Service select, Combined bitfield parameter.\n"
" 1 = TV, 2 = Radio, 4 = Other, (default 7)\n"
" -p for vdr output format: dump provider name\n"
" -e N VDR version, default 3 for VDR-1.3.x and newer\n"
" value 2 sets NIT and TID to zero\n"
" Vdr version 1.3.x and up implies -p.\n"
" -l lnb-type (DVB-S Only) (use -l help to print types) or \n"
" -l low[,high[,switch]] in Mhz\n"
" -u UK DVB-T Freeview channel numbering for VDR\n\n"
" -P do not use ATSC PSIP tables for scanning\n"
" (but only PAT and PMT) (applies for ATSC only)\n"
" -A N check for ATSC 1=Terrestrial [default], 2=Cable or 3=both\n"
" -U Uniquely name unknown services\n";
void
bad_usage(char *pname, int problem)
{
int i;
struct lnb_types_st *lnbp;
char **cp;
switch (problem) {
default:
case 0:
fprintf (stderr, usage, pname);
break;
case 1:
i = 0;
fprintf(stderr, "-l <lnb-type> or -l low[,high[,switch]] in Mhz\n"
"where <lnb-type> is:\n");
while(NULL != (lnbp = lnb_enum(i))) {
fprintf (stderr, "%s\n", lnbp->name);
for (cp = lnbp->desc; *cp ; cp++) {
fprintf (stderr, " %s\n", *cp);
}
i++;
}
break;
case 2:
show_existing_tuning_data_files();
fprintf (stderr, usage, pname);
}
}
int main (int argc, char **argv)
{
char frontend_devname [80];
int adapter = 0, frontend = 0, demux = 0;
int opt, i;
int frontend_fd;
int fe_open_mode;
const char *initial = NULL;
if (argc <= 1) {
bad_usage(argv[0], 2);
return -1;
}
/* start with default lnb type */
lnb_type = *lnb_enum(0);
while ((opt = getopt(argc, argv, "5cnpa:f:d:s:o:x:e:t:i:l:vquPA:U")) != -1) {
switch (opt) {
case 'a':
adapter = strtoul(optarg, NULL, 0);
break;
case 'c':
current_tp_only = 1;
if (!output_format_set)
output_format = OUTPUT_PIDS;
break;
case 'n':
get_other_nits = 1;
break;
case 'd':
demux = strtoul(optarg, NULL, 0);
break;
case 'f':
frontend = strtoul(optarg, NULL, 0);
break;
case 'p':
vdr_dump_provider = 1;
break;
case 's':
switch_pos = strtoul(optarg, NULL, 0);
break;
case 'o':
if (strcmp(optarg, "zap") == 0) output_format = OUTPUT_ZAP;
else if (strcmp(optarg, "vdr") == 0) output_format = OUTPUT_VDR;
else if (strcmp(optarg, "pids") == 0) output_format = OUTPUT_PIDS;
else {
bad_usage(argv[0], 0);
return -1;
}
output_format_set = 1;
break;
case '5':
long_timeout = 1;
break;
case 'x':
ca_select = strtoul(optarg, NULL, 0);
break;
case 'e':
vdr_version = strtoul(optarg, NULL, 0);
break;
case 't':
serv_select = strtoul(optarg, NULL, 0);
break;
case 'i':
spectral_inversion = strtoul(optarg, NULL, 0);
break;
case 'l':
if (lnb_decode(optarg, &lnb_type) < 0) {
bad_usage(argv[0], 1);
return -1;
}
break;
case 'v':
verbosity++;
break;
case 'q':
if (--verbosity < 0)
verbosity = 0;
break;
case 'u':
vdr_dump_channum = 1;
break;
case 'P':
no_ATSC_PSIP = 1;
break;
case 'A':
ATSC_type = strtoul(optarg,NULL,0);
if (ATSC_type == 0 || ATSC_type > 3) {
bad_usage(argv[0], 1);
return -1;
}
break;
case 'U':
unique_anon_services = 1;
break;
default:
bad_usage(argv[0], 0);
return -1;
};
}
if (optind < argc)
initial = argv[optind];
if ((!initial && !current_tp_only) || (initial && current_tp_only) ||
(spectral_inversion > 2)) {
bad_usage(argv[0], 0);
return -1;
}
lnb_type.low_val *= 1000; /* convert to kiloherz */
lnb_type.high_val *= 1000; /* convert to kiloherz */
lnb_type.switch_val *= 1000; /* convert to kiloherz */
if (switch_pos >= 4) {
fprintf (stderr, "switch position needs to be < 4!\n");
return -1;
}
if (initial)
info("scanning %s\n", initial);
snprintf (frontend_devname, sizeof(frontend_devname),
"/dev/dvb/adapter%i/frontend%i", adapter, frontend);
snprintf (demux_devname, sizeof(demux_devname),
"/dev/dvb/adapter%i/demux%i", adapter, demux);
info("using '%s' and '%s'\n", frontend_devname, demux_devname);
for (i = 0; i < MAX_RUNNING; i++)
poll_fds[i].fd = -1;
fe_open_mode = current_tp_only ? O_RDONLY : O_RDWR;
if ((frontend_fd = open (frontend_devname, fe_open_mode)) < 0)
fatal("failed to open '%s': %d %m\n", frontend_devname, errno);
/* determine FE type and caps */
if (ioctl(frontend_fd, FE_GET_INFO, &fe_info) == -1)
fatal("FE_GET_INFO failed: %d %m\n", errno);
if ((spectral_inversion == INVERSION_AUTO ) &&
!(fe_info.caps & FE_CAN_INVERSION_AUTO)) {
info("Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead\n");
spectral_inversion = INVERSION_OFF;
}
signal(SIGINT, handle_sigint);
if (current_tp_only) {
current_tp = alloc_transponder(0); /* dummy */
/* move TP from "new" to "scanned" list */
list_del_init(¤t_tp->list);
list_add_tail(¤t_tp->list, &scanned_transponders);
current_tp->scan_done = 1;
scan_tp ();
}
else
scan_network (frontend_fd, initial);
close (frontend_fd);
dump_lists ();
return 0;
}
static void dump_dvb_parameters (FILE *f, struct transponder *t)
{
switch (output_format) {
case OUTPUT_PIDS:
case OUTPUT_VDR:
vdr_dump_dvb_parameters(f, t->type, &t->param,
sat_polarisation (t), t->orbital_pos, t->we_flag);
break;
case OUTPUT_ZAP:
zap_dump_dvb_parameters (f, t->type, &t->param,
sat_polarisation (t), sat_number (t));
break;
default:
break;
}
}
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