Em Mon, 30 Dec 2013 13:48:42 +0100 André Roth <neol...@gmail.com> escreveu:
> Signed-off-by: André Roth <neol...@gmail.com> > --- > 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 <neol...@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 _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 <neol...@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 _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 <neol...@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/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)); Hmm... on some patches, when the table already exists, nothing is copied. Just the pointer 'p' is incremented. We should standardize this. Not sure what's the better. > + > + /* 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); For both memcpy(): please test before copy, and use offsetof(). > + > + eit->event = NULL; > + head = &eit->event; > + } > + p += sizeof(struct atsc_table_eit) - sizeof(eit->event); Please use offsetof(). > + > + hexdump(parms, "eit", p, 64 ); > + > + int i = 0; Use tabs. > + struct atsc_table_eit_event *last = NULL; Please move to the beginning of the function. > + 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); Use offsetof(). > + > + bswap16(event->bitfield); > + bswap32(event->start_time); > + bswap32(event->bitfield2); > + event->descriptor = NULL; > + event->next = NULL; > + atsc_time(event->start_time, &event->start); Use tabs. > + event->source_id = eit->header.id; > + > + //FIXME: title Don't use c99 comments. Use tabs. > + 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; Move to the beginning of the function or to the beginning of the braces. > + union atsc_table_eit_desc_length dl = *(union > atsc_table_eit_desc_length *) p; Same here: declare 'dl' at the beginning of a block. > + 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; please add a blank line here. > + 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; Data declarations first. > + 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 <neol...@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/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); > +} > + -- Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
