Signed-off-by: André Roth <neolynx@xxxxxxxxx> --- lib/include/descriptors/atsc_eit.h | 90 +++++++++++++++++++++ lib/include/descriptors/atsc_header.h | 63 +++++++++++++++ lib/libdvbv5/Makefile.am | 4 +- lib/libdvbv5/descriptors.c | 2 + lib/libdvbv5/descriptors/atsc_eit.c | 142 +++++++++++++++++++++++++++++++++ lib/libdvbv5/descriptors/atsc_header.c | 47 +++++++++++ 6 files changed, 347 insertions(+), 1 deletion(-) create mode 100644 lib/include/descriptors/atsc_eit.h create mode 100644 lib/include/descriptors/atsc_header.h create mode 100644 lib/libdvbv5/descriptors/atsc_eit.c create mode 100644 lib/libdvbv5/descriptors/atsc_header.c diff --git a/lib/include/descriptors/atsc_eit.h b/lib/include/descriptors/atsc_eit.h new file mode 100644 index 0000000..3bc5df6 --- /dev/null +++ b/lib/include/descriptors/atsc_eit.h @@ -0,0 +1,90 @@ +/* + * 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 _ATSC_EIT_H +#define _ATSC_EIT_H + +#include <stdint.h> +#include <unistd.h> /* ssize_t */ +#include <time.h> + +#include "descriptors/atsc_header.h" +#include "descriptors.h" + +#define ATSC_TABLE_EIT 0xCB + +struct atsc_table_eit_event { + union { + uint16_t bitfield; + struct { + uint16_t event_id:14; + uint16_t one:2; + } __attribute__((packed)); + } __attribute__((packed)); + uint32_t start_time; + union { + uint32_t bitfield2; + struct { + uint32_t title_length:8; + uint32_t duration:20; + uint32_t etm:2; + uint32_t one2:2; + uint32_t :2; + } __attribute__((packed)); + } __attribute__((packed)); + struct dvb_desc *descriptor; + struct atsc_table_eit_event *next; + struct tm start; + uint16_t source_id; +} __attribute__((packed)); + +union atsc_table_eit_desc_length { + uint16_t bitfield; + struct { + uint16_t desc_length:12; + uint16_t reserved:4; + } __attribute__((packed)); +} __attribute__((packed)); + +struct atsc_table_eit { + struct atsc_table_header header; + uint8_t events; + struct atsc_table_eit_event *event; +} __attribute__((packed)); + +#define atsc_eit_event_foreach(_event, _eit) \ + for( struct atsc_table_eit_event *_event = _eit->event; _event; _event = _event->next ) \ + +struct dvb_v5_fe_parms; + +#ifdef __cplusplus +extern "C" { +#endif + +void atsc_table_eit_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, uint8_t *table, ssize_t *table_length); +void atsc_table_eit_free(struct atsc_table_eit *eit); +void atsc_table_eit_print(struct dvb_v5_fe_parms *parms, struct atsc_table_eit *eit); +void atsc_time(const uint32_t start_time, struct tm *tm); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/include/descriptors/atsc_header.h b/lib/include/descriptors/atsc_header.h new file mode 100644 index 0000000..1e7148e --- /dev/null +++ b/lib/include/descriptors/atsc_header.h @@ -0,0 +1,63 @@ +/* + * 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 _ATSC_HEADER_H +#define _ATSC_HEADER_H + +#include <stdint.h> +#include <unistd.h> /* ssize_t */ + +#define ATSC_BASE_PID 0x1FFB + +struct atsc_table_header { + uint8_t table_id; + union { + uint16_t bitfield; + struct { + uint16_t section_length:12; + uint16_t one:2; + uint16_t priv:1; + uint16_t syntax:1; + } __attribute__((packed)); + }; + uint16_t id; + uint8_t current_next:1; + uint8_t version:5; + uint8_t one2:2; + + uint8_t section_id; + uint8_t last_section; + uint8_t protocol_version; +} __attribute__((packed)); + +struct dvb_v5_fe_parms; + +#ifdef __cplusplus +extern "C" { +#endif + +int atsc_table_header_init (struct atsc_table_header *t); +void atsc_table_header_print(struct dvb_v5_fe_parms *parms, const struct atsc_table_header *t); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libdvbv5/Makefile.am b/lib/libdvbv5/Makefile.am index 7755e05..6771d24 100644 --- a/lib/libdvbv5/Makefile.am +++ b/lib/libdvbv5/Makefile.am @@ -48,8 +48,10 @@ 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/atsc_header.c ../include/descriptors/atsc_header.h \ descriptors/mgt.c ../include/descriptors/mgt.h \ + descriptors/eit.c ../include/descriptors/eit.h \ + descriptors/atsc_eit.c ../include/descriptors/atsc_eit.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 7b9e9d0..737acfa 100644 --- a/lib/libdvbv5/descriptors.c +++ b/lib/libdvbv5/descriptors.c @@ -37,6 +37,7 @@ #include "descriptors/eit.h" #include "descriptors/vct.h" #include "descriptors/mgt.h" +#include "descriptors/atsc_eit.h" #include "descriptors/desc_language.h" #include "descriptors/desc_network_name.h" #include "descriptors/desc_cable_delivery.h" @@ -86,6 +87,7 @@ const struct dvb_table_init dvb_table_initializers[] = { [DVB_TABLE_CVCT] = { dvb_table_vct_init, sizeof(struct dvb_table_vct) }, [DVB_TABLE_EIT_SCHEDULE] = { dvb_table_eit_init, sizeof(struct dvb_table_eit) }, [ATSC_TABLE_MGT] = { atsc_table_mgt_init, sizeof(struct atsc_table_mgt) }, + [ATSC_TABLE_EIT] = { atsc_table_eit_init, sizeof(struct atsc_table_eit) }, }; char *default_charset = "iso-8859-1"; diff --git a/lib/libdvbv5/descriptors/atsc_eit.c b/lib/libdvbv5/descriptors/atsc_eit.c new file mode 100644 index 0000000..4ee38ae --- /dev/null +++ b/lib/libdvbv5/descriptors/atsc_eit.c @@ -0,0 +1,142 @@ +/* + * 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 + * + */ + +#include "descriptors/atsc_eit.h" +#include "dvb-fe.h" + +void atsc_table_eit_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 atsc_table_eit *eit = (struct atsc_table_eit *) table; + struct atsc_table_eit_event **head; + + if (*table_length > 0) { + memcpy(eit, p, sizeof(struct atsc_table_eit) - sizeof(eit->event)); + + /* find end of curent list */ + head = &eit->event; + while (*head != NULL) + head = &(*head)->next; + } else { + memcpy(eit, p, sizeof(struct atsc_table_eit) - sizeof(eit->event)); + *table_length = sizeof(struct atsc_table_eit); + + eit->event = NULL; + head = &eit->event; + } + p += sizeof(struct atsc_table_eit) - sizeof(eit->event); + + hexdump(parms, "eit", p, 64 ); + + int i = 0; + struct atsc_table_eit_event *last = NULL; + while (i++ < eit->events && (uint8_t *) p < buf + buflen - 4) { + struct atsc_table_eit_event *event = (struct atsc_table_eit_event *) malloc(sizeof(struct atsc_table_eit_event)); + memcpy(event, p, sizeof(struct atsc_table_eit_event) - + sizeof(event->descriptor) - + sizeof(event->next) - + sizeof(event->start) - + sizeof(event->source_id)); + p += sizeof(struct atsc_table_eit_event) - + sizeof(event->descriptor) - + sizeof(event->next) - + sizeof(event->start) - + sizeof(event->source_id); + + bswap16(event->bitfield); + bswap32(event->start_time); + bswap32(event->bitfield2); + event->descriptor = NULL; + event->next = NULL; + atsc_time(event->start_time, &event->start); + event->source_id = eit->header.id; + + //FIXME: title + p += event->title_length - 1; + + if(!*head) + *head = event; + if(last) + last->next = event; + + /* get the descriptors for each program */ + struct dvb_desc **head_desc = &event->descriptor; + union atsc_table_eit_desc_length dl = *(union atsc_table_eit_desc_length *) p; + bswap16(dl.bitfield); + p += sizeof(union atsc_table_eit_desc_length); + dvb_parse_descriptors(parms, p, dl.desc_length, head_desc); + + p += dl.desc_length; + last = event; + } +} + +void atsc_table_eit_free(struct atsc_table_eit *eit) +{ + struct atsc_table_eit_event *event = eit->event; + while (event) { + dvb_free_descriptors((struct dvb_desc **) &event->descriptor); + struct atsc_table_eit_event *tmp = event; + event = event->next; + free(tmp); + } + free(eit); +} + +void atsc_table_eit_print(struct dvb_v5_fe_parms *parms, struct atsc_table_eit *eit) +{ + dvb_log("EIT"); + atsc_table_header_print(parms, &eit->header); + const struct atsc_table_eit_event *event = eit->event; + uint16_t events = 0; + while (event) { + char start[255]; + strftime(start, sizeof(start), "%F %T", &event->start); + dvb_log("|- event %7d", event->event_id); + dvb_log("| Source %d", event->source_id); + dvb_log("| Starttime %d", event->start_time); + dvb_log("| Start %s UTC", start); + dvb_log("| Duration %dh %dm %ds", event->duration / 3600, (event->duration % 3600) / 60, event->duration % 60); + dvb_log("| ETM %d", event->etm); + dvb_log("| title length %d", event->title_length); + dvb_print_descriptors(parms, event->descriptor); + event = event->next; + events++; + } + dvb_log("|_ %d events", events); +} + +void atsc_time(const uint32_t start_time, struct tm *tm) +{ + tm->tm_sec = 0; + tm->tm_min = 0; + tm->tm_hour = 0; + tm->tm_mday = 6; + tm->tm_mon = 0; + tm->tm_year = 80; + tm->tm_isdst = -1; + tm->tm_wday = 0; + tm->tm_yday = 0; + mktime(tm); + tm->tm_sec += start_time; + mktime(tm); +} + + diff --git a/lib/libdvbv5/descriptors/atsc_header.c b/lib/libdvbv5/descriptors/atsc_header.c new file mode 100644 index 0000000..ed152ce --- /dev/null +++ b/lib/libdvbv5/descriptors/atsc_header.c @@ -0,0 +1,47 @@ +/* + * 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 + * + */ + +#include "descriptors/atsc_header.h" +#include "descriptors.h" +#include "dvb-fe.h" + +int atsc_table_header_init(struct atsc_table_header *t) +{ + bswap16(t->bitfield); + bswap16(t->id); + return 0; +} + +void atsc_table_header_print(struct dvb_v5_fe_parms *parms, const struct atsc_table_header *t) +{ + dvb_log("| table_id %02x", t->table_id); + dvb_log("| section_length %d", t->section_length); + dvb_log("| syntax %d", t->syntax); + dvb_log("| priv %d", t->priv); + dvb_log("| one %d", t->one); + dvb_log("| id %d", t->id); + dvb_log("| one2 %d", t->one2); + dvb_log("| version %d", t->version); + dvb_log("| current_next %d", t->current_next); + dvb_log("| section_id %d", t->section_id); + dvb_log("| last_section %d", t->last_section); + dvb_log("| protocol_version %d", t->protocol_version); +} + -- 1.8.3.2 -- 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
