Em Sat, 28 Dec 2013 16:45:55 +0100 André Roth <neolynx@xxxxxxxxx> escreveu: > Signed-off-by: André Roth <neolynx@xxxxxxxxx> > --- > lib/include/descriptors/mgt.h | 82 ++++++++++++++++++++++++++++++ > lib/libdvbv5/Makefile.am | 1 + > lib/libdvbv5/descriptors.c | 1 + > lib/libdvbv5/descriptors/mgt.c | 113 +++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 197 insertions(+) > create mode 100644 lib/include/descriptors/mgt.h > create mode 100644 lib/libdvbv5/descriptors/mgt.c > > diff --git a/lib/include/descriptors/mgt.h b/lib/include/descriptors/mgt.h > new file mode 100644 > index 0000000..4a68f2c > --- /dev/null > +++ b/lib/include/descriptors/mgt.h > @@ -0,0 +1,82 @@ > +/* > + * Copyright (c) 2011-2012 - Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> I'm not the author. > + * Copyright (c) 2013 - Andre Roth <neolynx@xxxxxxxxx> > + * > + * 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/header.h" > +#include "descriptors.h" > + > +#define DVB_TABLE_MGT 0xC7 > + > +struct dvb_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 dvb_table_mgt_table *next; > +} __attribute__((packed)); > + > +struct dvb_table_mgt { > + struct dvb_table_header header; > + uint8_t protocol_version; > + uint16_t tables; > + struct dvb_table_mgt_table *table; > + struct dvb_desc *descriptor; > +} __attribute__((packed)); > + > + > +#define dvb_mgt_transport_foreach( tran, mgt ) \ > + for( struct dvb_table_mgt_transport *tran = mgt->transport; tran; tran = tran->next ) \ > + > +struct dvb_v5_fe_parms; > + > +#ifdef __cplusplus > +extern "C" { > +#endif > + > +void dvb_table_mgt_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, uint8_t *table, ssize_t *table_length); > +void dvb_table_mgt_free(struct dvb_table_mgt *mgt); > +void dvb_table_mgt_print(struct dvb_v5_fe_parms *parms, struct dvb_table_mgt *mgt); > + > +#ifdef __cplusplus > +} > +#endif > + > +#endif > diff --git a/lib/libdvbv5/Makefile.am b/lib/libdvbv5/Makefile.am > index 795f30c..9d4b6b9 100644 > --- a/lib/libdvbv5/Makefile.am > +++ b/lib/libdvbv5/Makefile.am > @@ -49,6 +49,7 @@ libdvbv5_la_SOURCES = \ > descriptors/sdt.c ../include/descriptors/sdt.h \ > descriptors/vct.c ../include/descriptors/vct.h \ > descriptors/vct.c ../include/descriptors/vct.h \ > + descriptors/mgt.c ../include/descriptors/mgt.h \ > descriptors/desc_service_location.c ../include/descriptors/desc_service_location.h \ > descriptors/mpeg_ts.c ../include/descriptors/mpeg_ts.h \ > descriptors/mpeg_pes.c ../include/descriptors/mpeg_pes.h \ > diff --git a/lib/libdvbv5/descriptors.c b/lib/libdvbv5/descriptors.c > index 18884b0..bd1bc03 100644 > --- a/lib/libdvbv5/descriptors.c > +++ b/lib/libdvbv5/descriptors.c > @@ -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" > diff --git a/lib/libdvbv5/descriptors/mgt.c b/lib/libdvbv5/descriptors/mgt.c > new file mode 100644 > index 0000000..272d9d7 > --- /dev/null > +++ b/lib/libdvbv5/descriptors/mgt.c > @@ -0,0 +1,113 @@ > +/* > + * Copyright (c) 2011-2012 - Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> I'm not the author. > + * Copyright (c) 2012 - Andre Roth <neolynx@xxxxxxxxx> > + * > + * 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 dvb_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; > + struct dvb_table_mgt *mgt = (struct dvb_table_mgt *) table; > + struct dvb_desc **head_desc; > + struct dvb_table_mgt_table **head; > + /*int desc_length;*/ > + > + 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; > + } else { > + memcpy(table, p, sizeof(struct dvb_table_mgt) - sizeof(mgt->descriptor) - sizeof(mgt->table)); Check before copy. Use offset_of(). > + *table_length = sizeof(struct dvb_table_mgt); > + > + mgt->descriptor = NULL; > + mgt->table = NULL; > + head_desc = &mgt->descriptor; > + head = &mgt->table; > + bswap16(mgt->tables); > + } > + p += sizeof(struct dvb_table_mgt) - sizeof(mgt->descriptor) - sizeof(mgt->table); > + > + /*dvb_parse_descriptors(parms, p, desc_length, head_desc);*/ > + /*p += desc_length;*/ > + int i = 0; > + struct dvb_table_mgt_table *last = NULL; Data at beginning of the function. > + while (i++ < mgt->tables && (uint8_t *) p < buf + buflen - 4) { > + struct dvb_table_mgt_table *table = (struct dvb_table_mgt_table *) malloc(sizeof(struct dvb_table_mgt_table)); > + memcpy(table, p, sizeof(struct dvb_table_mgt_table) - sizeof(table->descriptor) - sizeof(table->next)); > + p += sizeof(struct dvb_table_mgt_table) - sizeof(table->descriptor) - sizeof(table->next); > + > + 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 */ > + struct dvb_desc **head_desc = &table->descriptor; > + dvb_parse_descriptors(parms, p, table->desc_length, head_desc); > + > + p += table->desc_length; > + last = table; > + } > +} > + > +void dvb_table_mgt_free(struct dvb_table_mgt *mgt) > +{ > + struct dvb_table_mgt_table *table = mgt->table; > + dvb_free_descriptors((struct dvb_desc **) &mgt->descriptor); > + while(table) { > + dvb_free_descriptors((struct dvb_desc **) &table->descriptor); > + struct dvb_table_mgt_table *tmp = table; > + table = table->next; > + free(tmp); > + } > + free(mgt); > +} > + > +void dvb_table_mgt_print(struct dvb_v5_fe_parms *parms, struct dvb_table_mgt *mgt) > +{ > + dvb_log("MGT"); > + dvb_table_header_print(parms, &mgt->header); > + dvb_log("| protocol_version %d", mgt->protocol_version); > + dvb_log("| tables %d", mgt->tables); > + /*dvb_print_descriptors(parms, mgt->descriptor);*/ > + const struct dvb_table_mgt_table *table = mgt->table; > + uint16_t tables = 0; > + while(table) { > + dvb_log("|- type %04x %d", table->type, table->pid); > + dvb_print_descriptors(parms, table->descriptor); > + table = table->next; > + tables++; > + } > + dvb_log("|_ %d tables", tables); > +} > + -- Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
