diff options
Diffstat (limited to 'lib/libucsi/dvb/data_broadcast_id_descriptor.h')
| -rw-r--r-- | lib/libucsi/dvb/data_broadcast_id_descriptor.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/data_broadcast_id_descriptor.h b/lib/libucsi/dvb/data_broadcast_id_descriptor.h new file mode 100644 index 0000000..446927c --- /dev/null +++ b/lib/libucsi/dvb/data_broadcast_id_descriptor.h @@ -0,0 +1,221 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DATA_BROADCAST_ID_DESCRIPTOR +#define _UCSI_DVB_DATA_BROADCAST_ID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for data_broadcast_id. + */ +enum { + DVB_BROADCAST_ID_DATA_PIPE = 0X0001, + DVB_BROADCAST_ID_ASYNCHRONOUS_DATA_STREAM = 0X0002, + DVB_BROADCAST_ID_SYNCHRONOUS_DATA_STREAM = 0X0003, + DVB_BROADCAST_ID_SYNCHRONISED_DATA_STREAM = 0X0004, + DVB_BROADCAST_ID_MULTI_PROTOCOL_ENCAPSULATION = 0X0005, + DVB_BROADCAST_ID_DATA_CAROUSEL = 0X0006, + DVB_BROADCAST_ID_OBJECT_CAROUSEL = 0X0007, + DVB_BROADCAST_ID_DVB_ATM_STREAMS = 0X0008, + DVB_BROADCAST_ID_HIGHER_PROTOCOLS = 0X0009, + DVB_BROADCAST_ID_SOFTWARE_UPDATE = 0x000A, + DVB_BROADCAST_ID_IP_MAC_NOTIFICATION_TABLE = 0x000B, +}; + +/** + * dvb_data_broadcast_id_descriptor structure. + */ +struct dvb_data_broadcast_id_descriptor { + struct descriptor d; + + uint16_t data_broadcast_id; + /* uint8_t id_selector_byte[] */ +} __ucsi_packed; + +/** + * id_selector_byte for 0x000b data_broadcast_id (IP/MAC Notification Table). + */ +struct dvb_id_selector_byte_000b { + uint8_t platform_id_data_length; + /* struct dvb_ip_mac_notification_info infos[] */ + /* uint8_t private_data[] */ +} __ucsi_packed; + +/** + * Entries in the infos field of a dvb_id_selector_byte_0b. + */ +struct dvb_ip_mac_notification_info { + EBIT2(uint32_t platform_id : 24; , + uint8_t action_type : 8; ); + EBIT3(uint8_t reserved : 2; , + uint8_t INT_versioning_flag : 1; , + uint8_t INT_version : 5; ); +} __ucsi_packed; + +/** + * Process a dvb_data_broadcast_id_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_data_broadcast_id_descriptor pointer, or NULL on error. + */ +static inline struct dvb_data_broadcast_id_descriptor* + dvb_data_broadcast_id_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_data_broadcast_id_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct dvb_data_broadcast_id_descriptor*) d; +} + +/** + * Accessor for the selector_byte field of a dvb_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_data_broadcast_id_descriptor_id_selector_byte(struct dvb_data_broadcast_id_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_data_broadcast_id_descriptor); +} + +/** + * Determine the length of the selector_byte field of a dvb_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_data_broadcast_id_descriptor_id_selector_byte_length(struct dvb_data_broadcast_id_descriptor *d) +{ + return d->d.len - 2; +} + +/** + * Accessor for a dvb_id_selector_byte_000b pointer. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Pointer to the data field. + */ +static inline struct dvb_id_selector_byte_000b * + dvb_id_selector_byte_000b(struct dvb_data_broadcast_id_descriptor *d) +{ + if (d->data_broadcast_id != DVB_BROADCAST_ID_IP_MAC_NOTIFICATION_TABLE) + return NULL; + return (struct dvb_id_selector_byte_000b *) dvb_data_broadcast_id_descriptor_id_selector_byte(d); +} + +/** + * Iterator for the dvb_ip_mac_notification_info field of a dvb_id_selector_byte_000b. + * + * @param id_selector_byte dvb_id_selector_byte_000b pointer. + * @param pos Variable containing a pointer to the current dvb_ip_mac_notification_info. + */ +#define dvb_id_selector_byte_000b_ip_mac_notification_info_for_each(id_selector_byte, pos) \ + for ((pos) = dvb_ip_mac_notification_info_first(id_selector_byte); \ + (pos); \ + (pos) = dvb_ip_mac_notification_info_next(id_selector_byte, pos)) + +/** + * Length of the private_data field of a dvb_id_selector_byte_000b. + * + * @param d descriptor pointer. + * @param i dvb_id_selector_byte_000b pointer. + * @return Length of the field. + */ +static inline uint8_t + dvb_id_selector_byte_000b_private_data_length(struct descriptor *d, + struct dvb_id_selector_byte_000b *i) +{ + return (uint8_t) (d->len - + sizeof(struct descriptor) - + i->platform_id_data_length - + sizeof(struct dvb_id_selector_byte_000b)); +} + +/** + * Accessor for the private_data field of a dvb_id_selector_byte_000b. + * + * @param d descriptor pointer. + * @param i dvb_id_selector_byte_000b pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_id_selector_byte_000b_private_data(struct descriptor *d, + struct dvb_id_selector_byte_000b *i) +{ + if (dvb_id_selector_byte_000b_private_data_length(d, i) <= 0) + return NULL; + + return (uint8_t *) i + i->platform_id_data_length + sizeof(struct dvb_id_selector_byte_000b); +} + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ip_mac_notification_info * + dvb_ip_mac_notification_info_first(struct dvb_id_selector_byte_000b *d) +{ + if (d->platform_id_data_length == 0) + return NULL; + + bswap32((uint8_t *) d + sizeof(struct dvb_id_selector_byte_000b)); + + return (struct dvb_ip_mac_notification_info *) ((uint8_t *) d + sizeof(struct dvb_id_selector_byte_000b)); +} + +static inline struct dvb_ip_mac_notification_info * + dvb_ip_mac_notification_info_next(struct dvb_id_selector_byte_000b *d, + struct dvb_ip_mac_notification_info *pos) +{ + uint8_t *end = (uint8_t *) d + d->platform_id_data_length; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_id_selector_byte_000b) + + sizeof(struct dvb_ip_mac_notification_info); + + if (next >= end) + return NULL; + + bswap32(next); + + return (struct dvb_ip_mac_notification_info *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif + +#include <libucsi/dvb/mhp_data_broadcast_id_descriptor.h> |