libdvbv5: Add support for partial reception

Partial reception is a feature for ISDB streams. Add support for
its descriptor.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/lib/include/descriptors/desc_partial_reception.h b/lib/include/descriptors/desc_partial_reception.h
new file mode 100644 (file)
index 0000000..37eaf13
--- /dev/null
+++ b/lib/include/descriptors/desc_partial_reception.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2013 - Mauro Carvalho Chehab <m.chehab@samsung.com>
+ *
+ * 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 version 2
+ * of the License.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ *
+ * Described on IEC/CENELEC DS/EN 62216-1:2011
+ *
+ * I couldn't find the original version, so I used what's there at:
+ *     http://tdt.telecom.pt/recursos/apresentacoes/Signalling Specifications for DTT deployment in Portugal.pdf
+ */
+
+#ifndef _PARTIAL_RECEPTION_H
+#define _PARTIAL_RECEPTION_H
+
+#include <stdint.h>
+#include <unistd.h> /* ssize_t */
+
+struct isdb_partial_reception_service_id {
+       uint16_t service_id;
+} __attribute__((packed));
+
+struct isdb_desc_partial_reception {
+       uint8_t type;
+       uint8_t length;
+       struct dvb_desc *next;
+
+       struct isdb_partial_reception_service_id *partial_reception;
+} __attribute__((packed));
+
+struct dvb_v5_fe_parms;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void isdb_desc_partial_reception_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc);
+void isdb_desc_partial_reception_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

diff --git a/lib/libdvbv5/Makefile.am b/lib/libdvbv5/Makefile.am
index 4fc69a2..da04a3d 100644 (file)
--- a/lib/libdvbv5/Makefile.am
+++ b/lib/libdvbv5/Makefile.am
@@ -44,6 +44,7 @@ libdvbv5_la_SOURCES = \
   descriptors/desc_isdbt_delivery.c  ../include/descriptors/desc_isdbt_delivery.h \
   descriptors/desc_logical_channel.c  ../include/descriptors/desc_logical_channel.h \
   descriptors/desc_ts_info.c  ../include/descriptors/desc_ts_info.h \
+  descriptors/desc_partial_reception.c  ../include/descriptors/desc_partial_reception.h \
   descriptors/nit.c  ../include/descriptors/nit.h \
   descriptors/sdt.c  ../include/descriptors/sdt.h \
   descriptors/vct.c  ../include/descriptors/vct.h \

diff --git a/lib/libdvbv5/descriptors.c b/lib/libdvbv5/descriptors.c
index 1e63d9d..875fceb 100644 (file)
--- a/lib/libdvbv5/descriptors.c
+++ b/lib/libdvbv5/descriptors.c
@@ -51,6 +51,7 @@
 #include "descriptors/desc_hierarchy.h"
 #include "descriptors/desc_ts_info.h"
 #include "descriptors/desc_logical_channel.h"
+#include "descriptors/desc_partial_reception.h"
 #include "descriptors/desc_extension.h"
 
 ssize_t dvb_desc_init(const uint8_t *buf, struct dvb_desc *desc)
@@ -1144,10 +1145,10 @@ const struct dvb_descriptor dvb_descriptors[] = {
        },
        [partial_reception_descriptor] = {
                .name  = "partial_reception_descriptor",
-               .init  = NULL,
-               .print = NULL,
+               .init  = isdb_desc_partial_reception_init,
+               .print = isdb_desc_partial_reception_print,
                .free  = NULL,
-               .size  = 0,
+               .size  = sizeof(struct isdb_desc_partial_reception),
        },
        [emergency_information_descriptor] = {
                .name  = "emergency_information_descriptor",

diff --git a/lib/libdvbv5/descriptors/desc_partial_reception.c b/lib/libdvbv5/descriptors/desc_partial_reception.c
new file mode 100644 (file)
index 0000000..41bf428
--- /dev/null
+++ b/lib/libdvbv5/descriptors/desc_partial_reception.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2013 - Mauro Carvalho Chehab <m.chehab@samsung.com>
+ *
+ * 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 version 2
+ * of the License.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ *
+ * Described on ARIB STD-B10 as Partial reception descriptor
+ */
+
+#include "descriptors.h"
+#include "descriptors/desc_partial_reception.h"
+#include "dvb-fe.h"
+#include "parse_string.h"
+
+void isdb_desc_partial_reception_init(struct dvb_v5_fe_parms *parms,
+                             const uint8_t *buf, struct dvb_desc *desc)
+{
+       struct isdb_desc_partial_reception *d = (void *)desc;
+       unsigned char *p = (unsigned char *)buf;
+       size_t len;
+       int i;
+
+       d->partial_reception = malloc(d->length);
+       if (!d->partial_reception)
+               dvb_perror("Out of memory!");
+
+       memcpy(d->partial_reception, p, d->length);
+
+       len = d->length / sizeof(d->partial_reception);
+
+       for (i = 0; i < len; i++)
+               bswap16(d->partial_reception[i].service_id);
+}
+
+void isdb_desc_partial_reception_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc)
+{
+       struct isdb_desc_partial_reception *d = (void *)desc;
+       int i;
+       size_t len;
+
+       len = d->length / sizeof(d->partial_reception);
+
+       for (i = 0; i < len; i++) {
+               dvb_log("|           service ID[%d]     %d", i, d->partial_reception[i].service_id);
+       }
+}