new file mode 100644
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2013 - Andre Roth <neolynx@gmail.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
+ *
+ */
+
+#ifndef _MGT_H
+#define _MGT_H
+
+#include <stdint.h>
+#include <unistd.h> /* ssize_t */
+
+#include "descriptors/atsc_header.h"
+#include "descriptors.h"
+
+#define ATSC_TABLE_MGT 0xC7
+
+struct atsc_table_mgt_table {
+ uint16_t type;
+ union {
+ uint16_t bitfield;
+ struct {
+ uint16_t pid:13;
+ uint16_t one:3;
+ } __attribute__((packed));
+ } __attribute__((packed));
+ uint8_t type_version:5;
+ uint8_t one2:3;
+ uint32_t size;
+ union {
+ uint16_t bitfield2;
+ struct {
+ uint16_t desc_length:12;
+ uint16_t one3:4;
+ } __attribute__((packed));
+ } __attribute__((packed));
+ struct dvb_desc *descriptor;
+ struct atsc_table_mgt_table *next;
+} __attribute__((packed));
+
+struct atsc_table_mgt {
+ struct atsc_table_header header;
+ uint16_t tables;
+ struct atsc_table_mgt_table *table;
+ struct dvb_desc *descriptor;
+} __attribute__((packed));
+
+#define atsc_mgt_table_foreach( _tran, _mgt ) \
+ for( struct atsc_table_mgt_table *_tran = _mgt->table; _tran; _tran = _tran->next ) \
+
+struct dvb_v5_fe_parms;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void atsc_table_mgt_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, uint8_t *table, ssize_t *table_length);
+void atsc_table_mgt_free(struct atsc_table_mgt *mgt);
+void atsc_table_mgt_print(struct dvb_v5_fe_parms *parms, struct atsc_table_mgt *mgt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
@@ -48,7 +48,8 @@ libdvbv5_la_SOURCES = \
descriptors/nit.c ../include/descriptors/nit.h \
descriptors/sdt.c ../include/descriptors/sdt.h \
descriptors/vct.c ../include/descriptors/vct.h \
- descriptors/eit.c ../include/descriptors/eit.h
+ descriptors/eit.c ../include/descriptors/eit.h \
+ descriptors/mgt.c ../include/descriptors/mgt.h \
libdvbv5_la_CPPFLAGS = $(ENFORCE_LIBDVBV5_STATIC)
libdvbv5_la_LDFLAGS = $(LIBDVBV5_VERSION) $(ENFORCE_LIBDVBV5_STATIC) -lm
@@ -36,6 +36,7 @@
#include "descriptors/sdt.h"
#include "descriptors/eit.h"
#include "descriptors/vct.h"
+#include "descriptors/mgt.h"
#include "descriptors/desc_language.h"
#include "descriptors/desc_network_name.h"
#include "descriptors/desc_cable_delivery.h"
new file mode 100644
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2013 - Andre Roth <neolynx@gmail.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
+ *
+ */
+
+#include "descriptors/mgt.h"
+#include "dvb-fe.h"
+
+void atsc_table_mgt_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, uint8_t *table, ssize_t *table_length)
+{
+ const uint8_t *p = buf, *endbuf = buf + buflen - 4; /* minus CRC */
+ struct atsc_table_mgt *mgt = (struct atsc_table_mgt *) table;
+ struct dvb_desc **head_desc;
+ struct atsc_table_mgt_table **head;
+ int i = 0;
+ struct atsc_table_mgt_table *last = NULL;
+ size_t size = offsetof(struct atsc_table_mgt, table);
+
+ if (p + size > endbuf) {
+ dvb_logerr("%s: short read %zd/%zd bytes", __func__,
+ size, endbuf - p);
+ return;
+ }
+
+ if (*table_length > 0) {
+ /* find end of curent lists */
+ head_desc = &mgt->descriptor;
+ while (*head_desc != NULL)
+ head_desc = &(*head_desc)->next;
+ head = &mgt->table;
+ while (*head != NULL)
+ head = &(*head)->next;
+
+ /* FIXME: read current mgt->tables for loop below */
+ } else {
+ memcpy(table, p, size);
+ *table_length = sizeof(struct atsc_table_mgt);
+
+ bswap16(mgt->tables);
+
+ mgt->descriptor = NULL;
+ mgt->table = NULL;
+ head_desc = &mgt->descriptor;
+ head = &mgt->table;
+ }
+ p += size;
+
+ while (i++ < mgt->tables && p < endbuf) {
+ struct atsc_table_mgt_table *table;
+
+ size = offsetof(struct atsc_table_mgt_table, descriptor);
+ if (p + size > endbuf) {
+ dvb_logerr("%s: short read %zd/%zd bytes", __func__,
+ size, endbuf - p);
+ return;
+ }
+ table = (struct atsc_table_mgt_table *) malloc(sizeof(struct atsc_table_mgt_table));
+ memcpy(table, p, size);
+ p += size;
+
+ bswap16(table->type);
+ bswap16(table->bitfield);
+ bswap16(table->bitfield2);
+ bswap32(table->size);
+ table->descriptor = NULL;
+ table->next = NULL;
+
+ if(!*head)
+ *head = table;
+ if(last)
+ last->next = table;
+
+ /* get the descriptors for each table */
+ size = table->desc_length;
+ if (p + size > endbuf) {
+ dvb_logerr("%s: short read %zd/%zd bytes", __func__,
+ size, endbuf - p);
+ return;
+ }
+ dvb_parse_descriptors(parms, p, size, &table->descriptor);
+
+ p += size;
+ last = table;
+ }
+ /* TODO: parse MGT descriptors here into head_desc */
+}
+
+void atsc_table_mgt_free(struct atsc_table_mgt *mgt)
+{
+ struct atsc_table_mgt_table *table = mgt->table;
+
+ dvb_free_descriptors((struct dvb_desc **) &mgt->descriptor);
+ while(table) {
+ struct atsc_table_mgt_table *tmp = table;
+
+ dvb_free_descriptors((struct dvb_desc **) &table->descriptor);
+ table = table->next;
+ free(tmp);
+ }
+ free(mgt);
+}
+
+void atsc_table_mgt_print(struct dvb_v5_fe_parms *parms, struct atsc_table_mgt *mgt)
+{
+ const struct atsc_table_mgt_table *table = mgt->table;
+ uint16_t tables = 0;
+
+ dvb_log("MGT");
+ atsc_table_header_print(parms, &mgt->header);
+ dvb_log("| tables %d", mgt->tables);
+ while(table) {
+ dvb_log("|- type %04x %d", table->type, table->pid);
+ dvb_log("| one %d", table->one);
+ dvb_log("| one2 %d", table->one2);
+ dvb_log("| type version %d", table->type_version);
+ dvb_log("| size %d", table->size);
+ dvb_log("| one3 %d", table->one3);
+ dvb_log("| desc_length %d", table->desc_length);
+ dvb_print_descriptors(parms, table->descriptor);
+ table = table->next;
+ tables++;
+ }
+ dvb_log("|_ %d tables", tables);
+}
+
The Master Guide Table is used in ATSC. Implementation according to specs A/65:2009 Signed-off-by: André Roth <neolynx@gmail.com> --- lib/include/descriptors/mgt.h | 79 +++++++++++++++++++++++ lib/libdvbv5/Makefile.am | 3 +- lib/libdvbv5/descriptors.c | 1 + lib/libdvbv5/descriptors/mgt.c | 140 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 222 insertions(+), 1 deletion(-) create mode 100644 lib/include/descriptors/mgt.h create mode 100644 lib/libdvbv5/descriptors/mgt.c