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ngx_rtmp_send.c
234 lines (165 loc) · 5.52 KB
/
ngx_rtmp_send.c
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/*
* Copyright (c) 2012 Roman Arutyunyan
*/
#include "ngx_rtmp.h"
#include "ngx_rtmp_amf0.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; \
\
__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->buf->in_file) { \
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0, "send in file buf!!"); \
} \
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); \
return ngx_rtmp_send_message(s, __l, 0); \
/* 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);
}
/* AMF0 sender */
ngx_int_t
ngx_rtmp_send_amf0(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_rtmp_amf0_elt_t *elts, size_t nelts)
{
ngx_rtmp_amf0_ctx_t act;
ngx_rtmp_core_srv_conf_t *cscf;
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
memset(&act, 0, sizeof(act));
act.cscf = cscf;
act.alloc = ngx_rtmp_alloc_shared_buf;
act.log = s->connection->log;
if (ngx_rtmp_amf0_write(&act, elts, nelts) != NGX_OK) {
if (act.first) {
ngx_rtmp_free_shared_bufs(cscf, act.first);
}
return NGX_ERROR;
}
if (act.first) {
ngx_rtmp_prepare_message(s, h, NULL, act.first);
return ngx_rtmp_send_message(s, act.first, 0);
}
return NGX_OK;
}