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/*
* Copyright (c) 2012 Roman Arutyunyan
*/
#include "ngx_rtmp.h"
#include "ngx_rtmp_amf.h"
#include "ngx_rtmp_streams.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_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"send chunk_size=%uD", 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_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"send ack seq=%uD", 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_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"send ack_size=%uD", 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_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"send bandwidth ack_size=%uD limit=%d",
ack_size, (int)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_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, &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;
}
ngx_int_t
ngx_rtmp_send_status(ngx_rtmp_session_t *s, char *code, char* level, char *desc)
{
ngx_rtmp_header_t h;
static double trans;
static ngx_rtmp_amf_elt_t out_inf[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("code"),
NULL, 0 },
{ NGX_RTMP_AMF_STRING,
ngx_string("level"),
NULL, 0 },
{ NGX_RTMP_AMF_STRING,
ngx_string("description"),
NULL, 0 },
};
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"onStatus", 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_null_string,
&trans, 0 },
{ NGX_RTMP_AMF_NULL,
ngx_null_string,
NULL, 0 },
{ NGX_RTMP_AMF_OBJECT,
ngx_null_string,
out_inf,
sizeof(out_inf) },
};
out_inf[0].data = code;
out_inf[1].data = level;
out_inf[2].data = desc;
memset(&h, 0, sizeof(h));
h.type = NGX_RTMP_MSG_AMF_CMD;
h.csid = NGX_RTMP_CSID_AMF;
h.msid = NGX_RTMP_MSID;
return ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0]));
}
ngx_int_t
ngx_rtmp_send_play_status(ngx_rtmp_session_t *s, char *code, char* level,
ngx_uint_t duration, ngx_uint_t bytes)
{
ngx_rtmp_header_t h;
static double dduration;
static double dbytes;
static ngx_rtmp_amf_elt_t out_inf[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("code"),
NULL, 0 },
{ NGX_RTMP_AMF_STRING,
ngx_string("level"),
NULL, 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_string("duration"),
&dduration, 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_string("bytes"),
&dbytes, 0 },
};
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"onPlayStatus", 0 },
{ NGX_RTMP_AMF_OBJECT,
ngx_null_string,
out_inf,
sizeof(out_inf) },
};
out_inf[0].data = code;
out_inf[1].data = level;
dduration = duration;
dbytes = bytes;
memset(&h, 0, sizeof(h));
h.type = NGX_RTMP_MSG_AMF_META;
h.csid = NGX_RTMP_CSID_AMF;
h.msid = NGX_RTMP_MSID;
return ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0]));
}
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