/
ngx_rtmp_send.c
276 lines (194 loc) · 6.94 KB
/
ngx_rtmp_send.c
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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
/*
* Copyright (c) 2012 Roman Arutyunyan
*/
#include "ngx_rtmp.h"
#include "ngx_rtmp_amf.h"
#define NGX_RTMP_USER_START(s, tp) \
ngx_rtmp_header_t __h; \
ngx_chain_t *__l; \
ngx_buf_t *__b; \
ngx_rtmp_core_srv_conf_t *__cscf; \
ngx_int_t rc; \
\
__cscf = ngx_rtmp_get_module_srv_conf( \
s, ngx_rtmp_core_module); \
memset(&__h, 0, sizeof(__h)); \
__h.type = tp; \
__h.csid = 2; \
__l = ngx_rtmp_alloc_shared_buf(__cscf); \
if (__l == NULL) { \
return NGX_ERROR; \
} \
__b = __l->buf;
#define NGX_RTMP_UCTL_START(s, type, utype) \
NGX_RTMP_USER_START(s, type); \
*(__b->last++) = (u_char)((utype) >> 8); \
*(__b->last++) = (u_char)(utype);
#define NGX_RTMP_USER_OUT1(v) \
*(__b->last++) = ((u_char*)&v)[0];
#define NGX_RTMP_USER_OUT4(v) \
*(__b->last++) = ((u_char*)&v)[3]; \
*(__b->last++) = ((u_char*)&v)[2]; \
*(__b->last++) = ((u_char*)&v)[1]; \
*(__b->last++) = ((u_char*)&v)[0];
#define NGX_RTMP_USER_END(s) \
ngx_rtmp_prepare_message(s, &__h, NULL, __l); \
rc = ngx_rtmp_send_message(s, __l, 0); \
ngx_rtmp_free_shared_chain(__cscf, __l); \
return rc;
/* Protocol control messages */
ngx_int_t
ngx_rtmp_send_chunk_size(ngx_rtmp_session_t *s, uint32_t chunk_size)
{
NGX_RTMP_USER_START(s, NGX_RTMP_MSG_CHUNK_SIZE);
NGX_RTMP_USER_OUT4(chunk_size);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_abort(ngx_rtmp_session_t *s, uint32_t csid)
{
NGX_RTMP_USER_START(s, NGX_RTMP_MSG_CHUNK_SIZE);
NGX_RTMP_USER_OUT4(csid);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_ack(ngx_rtmp_session_t *s, uint32_t seq)
{
NGX_RTMP_USER_START(s, NGX_RTMP_MSG_ACK);
NGX_RTMP_USER_OUT4(seq);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_ack_size(ngx_rtmp_session_t *s, uint32_t ack_size)
{
NGX_RTMP_USER_START(s, NGX_RTMP_MSG_ACK_SIZE);
NGX_RTMP_USER_OUT4(ack_size);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_bandwidth(ngx_rtmp_session_t *s, uint32_t ack_size,
uint8_t limit_type)
{
NGX_RTMP_USER_START(s, NGX_RTMP_MSG_BANDWIDTH);
NGX_RTMP_USER_OUT4(ack_size);
NGX_RTMP_USER_OUT1(limit_type);
NGX_RTMP_USER_END(s);
}
/* User control messages */
ngx_int_t
ngx_rtmp_send_user_stream_begin(ngx_rtmp_session_t *s, uint32_t msid)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_STREAM_BEGIN);
NGX_RTMP_USER_OUT4(msid);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_stream_eof(ngx_rtmp_session_t *s, uint32_t msid)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_STREAM_EOF);
NGX_RTMP_USER_OUT4(msid);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_stream_dry(ngx_rtmp_session_t *s, uint32_t msid)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_STREAM_DRY);
NGX_RTMP_USER_OUT4(msid);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_set_buflen(ngx_rtmp_session_t *s, uint32_t msid,
uint32_t buflen_msec)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_SET_BUFLEN);
NGX_RTMP_USER_OUT4(msid);
NGX_RTMP_USER_OUT4(buflen_msec);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_recorded(ngx_rtmp_session_t *s, uint32_t msid)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_RECORDED);
NGX_RTMP_USER_OUT4(msid);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_ping_request(ngx_rtmp_session_t *s, uint32_t timestamp)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_PING_REQUEST);
NGX_RTMP_USER_OUT4(timestamp);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_ping_response(ngx_rtmp_session_t *s, uint32_t timestamp)
{
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_PING_RESPONSE);
NGX_RTMP_USER_OUT4(timestamp);
NGX_RTMP_USER_END(s);
}
ngx_int_t
ngx_rtmp_send_user_unknown(ngx_rtmp_session_t *s, uint32_t timestamp)
{
static uint32_t zero;
static uint32_t one = 1;
uint32_t val;
NGX_RTMP_UCTL_START(s, NGX_RTMP_MSG_USER, NGX_RTMP_USER_UNKNOWN);
NGX_RTMP_USER_OUT4(zero);
NGX_RTMP_USER_OUT4(one);
val = timestamp & 0x7fffffff;
NGX_RTMP_USER_OUT4(val);
NGX_RTMP_USER_END(s);
}
static ngx_chain_t *
ngx_rtmp_alloc_amf_buf(void *arg)
{
return ngx_rtmp_alloc_shared_buf((ngx_rtmp_core_srv_conf_t *)arg);
}
/* AMF sender */
/* NOTE: this function does not free shared bufs on error */
ngx_int_t
ngx_rtmp_append_amf(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t **first, ngx_chain_t **last,
ngx_rtmp_amf_elt_t *elts, size_t nelts)
{
ngx_rtmp_amf_ctx_t act;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_int_t rc;
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
memset(&act, 0, sizeof(act));
act.arg = cscf;
act.alloc = ngx_rtmp_alloc_amf_buf;
act.log = s->connection->log;
if (first) {
act.first = *first;
}
if (last) {
act.link = *last;
}
rc = ngx_rtmp_amf_write(&act, elts, nelts);
if (first) {
*first = act.first;
}
if (last) {
*last = act.link;
}
return rc;
}
ngx_int_t ngx_rtmp_send_amf(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_rtmp_amf_elt_t *elts, size_t nelts)
{
ngx_chain_t *first;
ngx_int_t rc;
ngx_rtmp_core_srv_conf_t *cscf;
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
first = NULL;
rc = ngx_rtmp_append_amf(s, h, &first, NULL, elts, nelts);
if (rc != NGX_OK || first == NULL) {
goto done;
}
ngx_rtmp_prepare_message(s, h, NULL, first);
rc = ngx_rtmp_send_message(s, first, 0);
done:
ngx_rtmp_free_shared_chain(cscf, first);
return rc;
}