DTV: add ISDB-T (untested and exclusing sound broadcasting)

modules/access/dtv/bdagraph.cpp

@@ -250,6 +250,14 @@ int dvb_set_isdbs (dvb_device_t *, uint64_t /*freq*/, uint16_t /*ts_id*/)
     return VLC_EGENERIC;
 }
 
+/* ISDB-T */
+int dvb_set_isdbt (dvb_device_t *, uint32_t /*freq*/, uint32_t /*bandwidth*/,
+                   int /*transmit_mode*/, uint32_t /*guard*/,
+                   const isdbt_layer_t /*layers*/[3])
+{
+    return VLC_EGENERIC;
+}
+
 /* ATSC */
 int dvb_set_atsc (dvb_device_t *d, uint32_t freq, const char * /*mod*/)
 {

modules/access/dtv/dtv.h

@@ -98,20 +98,21 @@ int dvb_set_isdbs (dvb_device_t *, uint64_t freq, uint16_t ts_id);
 typedef struct isdbt_layer
 {
     const char *modulation;
-    const char *code_rate;
+    uint32_t code_rate;
     uint8_t segment_count;
     uint8_t time_interleaving;
 } isdbt_layer_t;
 
+int dvb_set_isdbt (dvb_device_t *, uint32_t freq, uint32_t bandwith,
+                   int transmission, uint32_t guard, const isdbt_layer_t[3]);
+
 typedef struct isdbt_sound
 {
     uint8_t subchannel_id;
-    uint8_t segment_index;    uint8_t segment_cound;
+    uint8_t segment_index;
+    uint8_t segment_count;
 } isdbt_sound_t;
 
-int dvb_set_isdbt (dvb_device_t *, uint32_t freq, const isdbt_layer_t *a,
-                   const isdbt_layer_t *b, const isdbt_layer_t *c,
-                   const isdbt_sound_t *sb);
 # ifdef __cplusplus
 }
 # endif

modules/access/dtv/linux.c

@@ -928,6 +928,49 @@ int dvb_set_isdbs (dvb_device_t *d, uint64_t freq_Hz, uint16_t ts_id)
 }
 
 
+/*** ISDB-T ***/
+static int dvb_set_isdbt_layer (dvb_device_t *d, unsigned num,
+                                const isdbt_layer_t *l)
+{
+    uint32_t mod = dvb_parse_modulation (l->modulation, QAM_AUTO);
+    uint32_t fec = dvb_parse_fec (l->code_rate);
+    uint32_t count = l->segment_count;
+    uint32_t ti = l->time_interleaving;
+
+    num *= DTV_ISDBT_LAYERB_FEC - DTV_ISDBT_LAYERA_FEC;
+
+    return dvb_set_props (d, 5, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
+                          DTV_ISDBT_LAYERA_FEC + num, fec,
+                          DTV_ISDBT_LAYERA_MODULATION + num, mod,
+                          DTV_ISDBT_LAYERA_SEGMENT_COUNT + num, count,
+                          DTV_ISDBT_LAYERA_TIME_INTERLEAVING + num, ti);
+}
+
+int dvb_set_isdbt (dvb_device_t *d, uint32_t freq, uint32_t bandwidth,
+                   int transmit_mode, uint32_t guard,
+                   const isdbt_layer_t layers[3])
+{
+#if DVBv5(1)
+    bandwidth = dvb_parse_bandwidth (bandwidth);
+    transmit_mode = dvb_parse_transmit_mode (transmit_mode);
+    guard = dvb_parse_guard (guard);
+
+    if (dvb_find_frontend (d, FE_OFDM, FE_IS_STUPID))
+        return -1;
+    if (dvb_set_props (d, 5, DTV_CLEAR, 0, DTV_DELIVERY_SYSTEM, SYS_ISDBT,
+                       DTV_FREQUENCY, freq, DTV_BANDWIDTH_HZ, bandwidth,
+                       DTV_GUARD_INTERVAL, guard))
+        return -1;
+    for (unsigned i = 0; i < 3; i++)
+        if (dvb_set_isdbt_layer (d, i, layers + i))
+            return -1;
+    return 0;
+#else
+# warning ISDB-T needs Linux DVB version 5.1 or later.
+#endif
+}
+
+
 /*** ATSC ***/
 int dvb_set_atsc (dvb_device_t *d, uint32_t freq, const char *modstr)
 {