1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
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>
|
