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
|
/*
* Copyright (C) 2012 Doubango Telecom <http://www.doubango.org>
*
* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO 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, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO 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 DOUBANGO.
*
*/
#include "tinyrtp/rtcp/trtp_rtcp_report_sdes.h"
#include "tinyrtp/rtcp/trtp_rtcp_header.h"
#include "tsk_debug.h"
/*
6.5 SDES: Source Description RTCP Packet
0 1 2
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
header |V=2|P| SC | PT=SDES=202 | length |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
chunk | SSRC/CSRC_1 |
1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SDES items |
| ... |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
chunk | SSRC/CSRC_2 |
2 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SDES items |
| ... |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
*/
static tsk_object_t* trtp_rtcp_report_sdes_ctor(tsk_object_t * self, va_list * app)
{
trtp_rtcp_report_sdes_t *sdes = self;
if(sdes){
sdes->chuncks = tsk_list_create();
}
return self;
}
static tsk_object_t* trtp_rtcp_report_sdes_dtor(tsk_object_t * self)
{
trtp_rtcp_report_sdes_t *sdes = self;
if(sdes){
// deinit base
trtp_rtcp_packet_deinit(TRTP_RTCP_PACKET(sdes));
// deinit self
TSK_OBJECT_SAFE_FREE(sdes->chuncks);
}
return self;
}
static const tsk_object_def_t trtp_rtcp_report_sdes_def_s =
{
sizeof(trtp_rtcp_report_sdes_t),
trtp_rtcp_report_sdes_ctor,
trtp_rtcp_report_sdes_dtor,
tsk_null,
};
const tsk_object_def_t *trtp_rtcp_report_sdes_def_t = &trtp_rtcp_report_sdes_def_s;
trtp_rtcp_report_sdes_t* trtp_rtcp_report_sdes_create_null()
{
trtp_rtcp_report_sdes_t* sdes;
if((sdes = (trtp_rtcp_report_sdes_t*)tsk_object_new(trtp_rtcp_report_sdes_def_t))){
trtp_rtcp_packet_init(TRTP_RTCP_PACKET(sdes), TRTP_RTCP_HEADER_VERSION_DEFAULT, 0, 0, trtp_rtcp_packet_type_sdes, TRTP_RTCP_HEADER_SIZE);
}
return sdes;
}
trtp_rtcp_report_sdes_t* trtp_rtcp_report_sdes_create(trtp_rtcp_header_t* header)
{
trtp_rtcp_report_sdes_t* sdes;
if((sdes = (trtp_rtcp_report_sdes_t*)tsk_object_new(trtp_rtcp_report_sdes_def_t))){
TRTP_RTCP_PACKET(sdes)->header = tsk_object_ref(header);
}
return sdes;
}
trtp_rtcp_report_sdes_t* trtp_rtcp_report_sdes_deserialize(const void* data, tsk_size_t _size)
{
trtp_rtcp_report_sdes_t* sdes = tsk_null;
trtp_rtcp_header_t* header = tsk_null;
const uint8_t* pdata = (const uint8_t*)data;
int32_t size = (int32_t)_size;
if(!data || size < TRTP_RTCP_HEADER_SIZE){
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
if(!(header = trtp_rtcp_header_deserialize(pdata, size))){
TSK_DEBUG_ERROR("Failed to deserialize the header");
goto bail;
}
if(header->length_in_bytes < (TRTP_RTCP_HEADER_SIZE + 4)){
TSK_DEBUG_ERROR("Too short");
goto bail;
}
if(!(sdes = trtp_rtcp_report_sdes_create(header))){
TSK_DEBUG_ERROR("Failed to create object");
goto bail;
}
pdata += TRTP_RTCP_HEADER_SIZE;
size -= TRTP_RTCP_HEADER_SIZE;
// Chuncks
if(header->rc > 0){
tsk_size_t i = 0, chunck_size;
trtp_rtcp_sdes_chunck_t* chunck;
while(i++ < header->rc && size > TRTP_RTCP_SDES_CHUNCK_MIN_SIZE){
if((chunck = trtp_rtcp_sdes_chunck_deserialize(pdata, size))){
chunck_size = trtp_rtcp_sdes_chunck_get_size(chunck);
if((size -= (int32_t)chunck_size)){
pdata += chunck_size;
}
tsk_list_push_ascending_data(sdes->chuncks, (void**)&chunck);
continue;
}
break;
}
}
bail:
TSK_OBJECT_SAFE_FREE(header);
return sdes;
}
int trtp_rtcp_report_sdes_serialize_to(const trtp_rtcp_report_sdes_t* self, void* data, tsk_size_t size)
{
int ret;
uint8_t* pdata = (uint8_t*)data;
if(!self || !data || size < trtp_rtcp_report_sdes_get_size(self)){
return -1;
}
if((ret = trtp_rtcp_header_serialize_to(TRTP_RTCP_PACKET(self)->header, pdata, size))){
TSK_DEBUG_ERROR("Failed to serialize the header");
return ret;
}
pdata += (TRTP_RTCP_HEADER_SIZE);
size -= (TRTP_RTCP_HEADER_SIZE);
if(TRTP_RTCP_PACKET(self)->header->rc > 0){
const tsk_list_item_t* item;
tsk_size_t chunck_size;
const trtp_rtcp_sdes_chunck_t* chunck;
tsk_list_foreach(item, self->chuncks){
if(!(chunck = item->data)){
continue;
}
if((ret = trtp_rtcp_sdes_chunck_serialize_to(chunck, pdata, size))){
TSK_DEBUG_ERROR("Failed to serialize SDES chunck");
goto bail;
}
chunck_size = trtp_rtcp_sdes_chunck_get_size(chunck);
pdata += chunck_size;
size -= chunck_size;
}
}
bail:
return ret;
}
int trtp_rtcp_report_sdes_add_chunck(trtp_rtcp_report_sdes_t* self, trtp_rtcp_sdes_chunck_t* chunck)
{
if(!self || !self->chuncks || !chunck){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
chunck = tsk_object_ref(chunck);
TRTP_RTCP_PACKET(self)->header->length_in_bytes += (uint32_t)trtp_rtcp_sdes_chunck_get_size(chunck);
TRTP_RTCP_PACKET(self)->header->length_in_words_minus1 = ((TRTP_RTCP_PACKET(self)->header->length_in_bytes >> 2) - 1)
+ ((TRTP_RTCP_PACKET(self)->header->length_in_bytes & 0x03) ? 1 : 0);
++TRTP_RTCP_PACKET(self)->header->rc;
tsk_list_push_back_data(self->chuncks, (void**)&chunck);
return 0;
}
tsk_size_t trtp_rtcp_report_sdes_get_size(const trtp_rtcp_report_sdes_t* self)
{
if(!self){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
else{
tsk_size_t size = TRTP_RTCP_HEADER_SIZE;
const tsk_list_item_t* item;
tsk_list_foreach(item, self->chuncks){
size += trtp_rtcp_sdes_chunck_get_size(TRTP_RTCP_SDES_CHUNCK(item->data));
}
return size;
}
}
|
