From: Akihiro Tsukada <[email protected]>
added NIT scan for ISDB-S,
fixed wrong/too-close frequency of the scanned entries,
when "freq_offset"/bandwith was not set properly.
---
lib/include/libdvbv5/dvb-scan.h | 2 +
lib/libdvbv5/dvb-fe.c | 6 +-
lib/libdvbv5/dvb-file.c | 23 ++++++-
lib/libdvbv5/dvb-scan.c | 138 +++++++++++++++++++++++++++++++++++++++-
lib/libdvbv5/parse_string.c | 15 ++++-
utils/dvb/dvb-format-convert.c | 3 +-
utils/dvb/dvbv5-scan.c | 19 ++++++
7 files changed, 200 insertions(+), 6 deletions(-)
diff --git a/lib/include/libdvbv5/dvb-scan.h b/lib/include/libdvbv5/dvb-scan.h
index fe50687..e3a0d24 100644
--- a/lib/include/libdvbv5/dvb-scan.h
+++ b/lib/include/libdvbv5/dvb-scan.h
@@ -387,6 +387,8 @@ int dvb_estimate_freq_shift(struct dvb_v5_fe_parms *parms);
int dvb_new_freq_is_needed(struct dvb_entry *entry, struct dvb_entry
*last_entry,
uint32_t freq, enum dvb_sat_polarization pol, int
shift);
+int dvb_new_ts_is_needed(struct dvb_entry *entry, struct dvb_entry *last_entry,
+ uint32_t freq, int shift, uint32_t ts_id);
struct dvb_entry *dvb_scan_add_entry(struct dvb_v5_fe_parms *parms,
struct dvb_entry *first_entry,
diff --git a/lib/libdvbv5/dvb-fe.c b/lib/libdvbv5/dvb-fe.c
index f535311..93c0b9b 100644
--- a/lib/libdvbv5/dvb-fe.c
+++ b/lib/libdvbv5/dvb-fe.c
@@ -372,6 +372,8 @@ int dvb_set_sys(struct dvb_v5_fe_parms *p,
fe_delivery_system_t sys)
parms->p.current_sys = sys;
parms->n_props = rc;
+ if (sys == SYS_ISDBS /* || sys == SYS_ISDBT */)
+ parms->p.default_charset = "arib-std-b24";
return 0;
}
@@ -683,8 +685,10 @@ int dvb_fe_set_parms(struct dvb_v5_fe_parms *p)
dvb_logdbg("LNA is %s", parms->p.lna ? "ON" : "OFF");
}
- if (dvb_fe_is_satellite(tmp_parms.p.current_sys))
+ if (dvb_fe_is_satellite(tmp_parms.p.current_sys)) {
dvb_sat_set_parms(&tmp_parms.p);
+ parms->freq_offset = tmp_parms.freq_offset;
+ }
/* Filter out any user DTV_foo property such as DTV_POLARIZATION */
tmp_parms.n_props = dvb_copy_fe_props(tmp_parms.dvb_prop,
diff --git a/lib/libdvbv5/dvb-file.c b/lib/libdvbv5/dvb-file.c
index 1ea14c4..fa4d370 100644
--- a/lib/libdvbv5/dvb-file.c
+++ b/lib/libdvbv5/dvb-file.c
@@ -1125,7 +1125,28 @@ static int get_program_and_store(struct
dvb_v5_fe_parms_priv *parms,
entry->props[j].cmd = parms->dvb_prop[j].cmd;
entry->props[j].u.data = parms->dvb_prop[j].u.data;
- if (!*channel)
+ /* [ISDB-S]
+ * Update DTV_STREAM_ID if it was not specified by a user
+ * or set to a wrong one.
+ * In those cases, demod must have selected the first TS_ID.
+ * The update must be after the above dvb_fe_get_parms() call,
+ * since a lazy FE driver that does not update stream_id prop
+ * cache in FE.get_frontend() may overwrite the setting again
+ * with the initial / user-specified wrong value.
+ */
+ if (entry->props[j].cmd == DTV_STREAM_ID
+ && entry->props[j].u.data == 0
+ && parms->p.current_sys == SYS_ISDBS)
+ entry->props[j].u.data =
dvb_scan_handler->pat->header.id;
+
+ if (entry->props[j].cmd != DTV_FREQUENCY)
+ continue;
+
+ if (dvb_fe_is_satellite(parms->p.current_sys) &&
+ entry->props[j].u.data < parms->freq_offset)
+ entry->props[j].u.data += parms->freq_offset;
+
+ if (!channel || !*channel)
freq = entry->props[j].u.data;
}
if (!*channel) {
diff --git a/lib/libdvbv5/dvb-scan.c b/lib/libdvbv5/dvb-scan.c
index 3b70f5a..f265f97 100644
--- a/lib/libdvbv5/dvb-scan.c
+++ b/lib/libdvbv5/dvb-scan.c
@@ -635,7 +635,6 @@ int dvb_estimate_freq_shift(struct dvb_v5_fe_parms *__p)
rolloff = 115;
break;
case SYS_DVBS:
- case SYS_ISDBS: /* FIXME: not sure if this rollof is right for ISDB-S */
divisor = 100000;
rolloff = 135;
break;
@@ -662,6 +661,12 @@ int dvb_estimate_freq_shift(struct dvb_v5_fe_parms *__p)
case SYS_DVBC_ANNEX_B:
bw = 6000000;
break;
+ case SYS_ISDBS:
+ /* since ISDBS uses fixed symbol_rate & rolloff,
+ * those parameters are not mandatory in channel config file.
+ */
+ bw = 28860 * 135 / 100;
+ break;
default:
break;
}
@@ -676,7 +681,9 @@ int dvb_estimate_freq_shift(struct dvb_v5_fe_parms *__p)
}
if (!bw)
dvb_fe_retrieve_parm(&parms->p, DTV_BANDWIDTH_HZ, &bw);
-
+ if (!bw)
+ dvb_log("Cannot calc frequency shift. " \
+ "Either bandwidth/symbol-rate is unavailable (yet).");
/*
* If the max frequency shift between two frequencies is below
* than the used bandwidth / 8, it should be the same channel.
@@ -758,6 +765,87 @@ struct dvb_entry *dvb_scan_add_entry(struct
dvb_v5_fe_parms *__p,
return NULL;
}
+int dvb_new_ts_is_needed(struct dvb_entry *entry, struct dvb_entry *last_entry,
+ uint32_t freq, int shift, uint32_t ts_id)
+{
+ int i;
+ uint32_t data;
+
+ for (; entry != last_entry; entry = entry->next) {
+ for (i = 0; i < entry->n_props; i++) {
+ data = entry->props[i].u.data;
+ if (entry->props[i].cmd == DTV_STREAM_ID) {
+ if (data != ts_id)
+ break;
+ }
+ if (entry->props[i].cmd == DTV_FREQUENCY) {
+ if (freq < data - shift || freq > data + shift)
+ break;
+ }
+ }
+ if (i == entry->n_props && entry->n_props > 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct dvb_entry *
+dvb_scan_add_entry_isdbs(struct dvb_v5_fe_parms *__p,
+ struct dvb_entry *first_entry, struct dvb_entry *entry,
+ uint32_t freq, uint32_t shift, uint32_t ts_id)
+{
+ struct dvb_v5_fe_parms_priv *parms = (void *)__p;
+ struct dvb_entry *new_entry;
+ int i, n = 2;
+
+ if (!dvb_new_ts_is_needed(first_entry, NULL, freq, shift, ts_id))
+ return NULL;
+
+ /* Clone the current entry into a new entry */
+ new_entry = calloc(sizeof(*new_entry), 1);
+ if (!new_entry) {
+ dvb_perror("not enough memory for a new scanning frequency/TS");
+ return NULL;
+ }
+
+ memcpy(new_entry, entry, sizeof(*entry));
+ if (entry->channel)
+ new_entry->channel = strdup(entry->channel);
+ if (entry->vchannel)
+ new_entry->vchannel = strdup(entry->vchannel);
+ if (entry->location)
+ new_entry->location = strdup(entry->location);
+ if (entry->lnb)
+ new_entry->lnb = strdup(entry->lnb);
+
+ /*
+ * The frequency should change to the new one. Seek for it and
+ * replace its value to the desired one.
+ */
+ for (i = 0; i < new_entry->n_props; i++) {
+ if (new_entry->props[i].cmd == DTV_FREQUENCY) {
+ new_entry->props[i].u.data = freq;
+ /* Navigate to the end of the entry list */
+ while (entry->next) {
+ entry = entry->next;
+ n++;
+ }
+ dvb_log("New transponder/channel found: #%d: %d",
+ n, freq);
+ entry->next = new_entry;
+ new_entry->next = NULL;
+ return new_entry;
+ }
+ }
+
+ /* This should never happen */
+ dvb_logerr("BUG: Couldn't add %d to the scan frequency list.", freq);
+ free(new_entry);
+
+ return NULL;
+}
+
struct update_transponders {
struct dvb_v5_fe_parms *parms;
struct dvb_v5_descriptors *dvb_scan_handler;
@@ -987,6 +1075,44 @@ static void add_update_nit_dvbs(struct dvb_table_nit *nit,
SYS_DVBS2);
}
+static void add_update_nit_isdbs(struct dvb_table_nit *nit,
+ struct dvb_table_nit_transport *tran,
+ struct dvb_desc *desc,
+ void *priv)
+{
+ struct update_transponders *tr = priv;
+ struct dvb_entry *new;
+ /* FIXME:
+ * use the ISDB-S specific satellite delsys descriptor structure,
+ * instead of overloading to the EN300-468's one, dvb_desc_sat.
+ * The following members are incompatible:
+ * {.modulation_type, .modulation_system, .roll_off, .fec}
+ */
+ struct dvb_desc_sat *d = (void *)desc;
+ uint32_t ts_id;
+
+ if (tr->update)
+ return;
+
+ ts_id = tran->transport_id;
+ new = dvb_scan_add_entry_isdbs(tr->parms, tr->first_entry, tr->entry,
+ d->frequency, tr->shift, ts_id);
+ if (!new)
+ return;
+
+ /* Set (optional) ISDB-S props for the transponder */
+ /* FIXME: fill in other props like DTV_MODULATION, DTV_INNER_FEC.
+ * This requires extending the enum definitions in DVBv5 API
+ * to include the ISDB-S/T specific modulation/fec values,
+ * such as "BPSK" and "look TMCC".
+ * Since even "AUTO" is not defined, skip setting them now.
+ */
+ dvb_store_entry_prop(new, DTV_POLARIZATION,
+ dvbs_polarization[d->polarization]);
+ dvb_store_entry_prop(new, DTV_SYMBOL_RATE,
+ d->symbol_rate);
+}
+
static void __dvb_add_update_transponders(struct dvb_v5_fe_parms_priv *parms,
struct dvb_v5_descriptors
*dvb_scan_handler,
@@ -1045,6 +1171,14 @@ static void __dvb_add_update_transponders(struct
dvb_v5_fe_parms_priv *parms,
satellite_delivery_system_descriptor,
NULL, add_update_nit_dvbs, &tr);
return;
+ case SYS_ISDBS:
+ /* see the FIXME: in add_update_nit_isdbs() */
+ dvb_table_nit_descriptor_handler(
+ &parms->p, dvb_scan_handler->nit,
+ satellite_delivery_system_descriptor,
+ NULL, add_update_nit_isdbs, &tr);
+ return;
+
default:
dvb_log("Transponders detection not implemented for this
standard yet.");
return;
diff --git a/lib/libdvbv5/parse_string.c b/lib/libdvbv5/parse_string.c
index 3750d04..c043ad5 100644
--- a/lib/libdvbv5/parse_string.c
+++ b/lib/libdvbv5/parse_string.c
@@ -319,6 +319,8 @@ void dvb_iconv_to_charset(struct dvb_v5_fe_parms *parms,
p[len] = '\0';
dvb_logerr("Conversion from %s to %s not supported\n",
input_charset, output_charset);
+ if (!strcasecmp(input_charset, "ARIB-STD-B24"))
+ dvb_log("Try setting GCONV_PATH to the bundled gconv
dir.\n");
} else {
iconv(cd, (ICONV_CONST char **)&src, &len, &p, &destlen);
iconv_close(cd);
@@ -386,7 +388,11 @@ void dvb_parse_string(struct dvb_v5_fe_parms *parms, char
**dest, char **emph,
if (!len)
return;
- if (*src < 0x20) {
+ /*
+ * Strings in ISDB-S/T(JP) do not start with a charset identifier,
+ * and can start with a control character (< 0x20).
+ */
+ if (strcasecmp(type, "ARIB-STD-B24") && *src < 0x20) {
switch (*src) {
case 0x00: type = "ISO-6937"; break;
case 0x01: type = "ISO-8859-5"; break;
@@ -466,6 +472,13 @@ void dvb_parse_string(struct dvb_v5_fe_parms *parms, char
**dest, char **emph,
*p2 = '\0';
len = p - (char *)tmp1;
len2 = p2 - (char *)tmp2;
+ } else if (!strcasecmp(type, "ARIB-STD-B24")) {
+ /* do nothing */
+ /* NOTE: "ARIB-STD-B24" gconv module is required.
+ * Until it is merged to upstream glibc(iconv),
+ * set GCONV_PATH env. var. to use the bundled version of it,
+ * otherwise, no conversion will be done.
+ */
} else {
dvb_logerr("charset %s not implemented", type);
/*
diff --git a/utils/dvb/dvb-format-convert.c b/utils/dvb/dvb-format-convert.c
index 4f0e075..bf37945 100644
--- a/utils/dvb/dvb-format-convert.c
+++ b/utils/dvb/dvb-format-convert.c
@@ -125,7 +125,8 @@ int main(int argc, char **argv)
fprintf(stderr, "ERROR: Please specify a valid output file\n");
missing = 1;
} else if (((args.input_format == FILE_ZAP) ||
- (args.output_format == FILE_ZAP)) && args.delsys <= 0) {
+ (args.output_format == FILE_ZAP)) &&
+ (args.delsys <= 0 || args.delsys == SYS_ISDBS)) {
fprintf(stderr, "ERROR: Please specify a valid delivery system
for ZAP format\n");
missing = 1;
}
diff --git a/utils/dvb/dvbv5-scan.c b/utils/dvb/dvbv5-scan.c
index cdc82ec..45c8516 100644
--- a/utils/dvb/dvbv5-scan.c
+++ b/utils/dvb/dvbv5-scan.c
@@ -251,6 +251,16 @@ static int run_scan(struct arguments *args,
if (dvb_retrieve_entry_prop(entry, DTV_POLARIZATION, &pol))
pol = POLARIZATION_OFF;
+ if (parms->current_sys == SYS_ISDBS) {
+ uint32_t tsid = 0;
+
+ dvb_store_entry_prop(entry, DTV_POLARIZATION,
POLARIZATION_R);
+
+ dvb_retrieve_entry_prop(entry, DTV_STREAM_ID, &tsid);
+ if (!dvb_new_ts_is_needed(dvb_file->first_entry, entry,
+ freq, shift, tsid))
+ continue;
+ } else
if (!dvb_new_freq_is_needed(dvb_file->first_entry, entry,
freq, pol, shift))
continue;
@@ -259,6 +269,15 @@ static int run_scan(struct arguments *args,
dvb_log("Scanning frequency #%d %d", count, freq);
/*
+ * update params->lnb only if it differs from entry->lnb
+ * (and "--lnbf" option was not provided),
+ * to avoid linear search of LNB types for every entries.
+ */
+ if (!args->lnb_name && entry->lnb &&
+ (!parms->lnb || strcasecmp(entry->lnb, parms->lnb->alias)))
+ parms->lnb =
dvb_sat_get_lnb(dvb_sat_search_lnb(entry->lnb));
+
+ /*
* Run the scanning logic
*/
--
2.1.2
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