static ngx_int_t
ngx_rtmp_play_seek(ngx_rtmp_session_t *s, ngx_rtmp_seek_t *v)
{
ngx_rtmp_play_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx == NULL || ctx->file.fd == NGX_INVALID_FILE) {
goto next;
}
if (ngx_rtmp_send_stream_eof(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
ngx_rtmp_play_do_seek(s, v->offset);
if (ngx_rtmp_send_status(s, "NetStream.Seek.Notify", "status", "Seeking")
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_rtmp_send_stream_begin(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
next:
return next_seek(s, v);
}
static ngx_int_t
ngx_rtmp_live_publish(ngx_rtmp_session_t *s, ngx_rtmp_publish_t *v)
{
ngx_rtmp_live_app_conf_t *lacf;
ngx_rtmp_live_ctx_t *ctx;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL || !lacf->live) {
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: publish: name='%s' type='%s'",
v->name, v->type);
/* join stream as publisher */
ngx_rtmp_live_join(s, v->name, 1);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL || !ctx->publishing) {
goto next;
}
ctx->silent = v->silent;
if (!ctx->silent) {
ngx_rtmp_send_status(s, "NetStream.Publish.Start",
"status", "Start publishing");
}
next:
return next_publish(s, v);
}
static ngx_int_t
ngx_rtmp_play_close_stream(ngx_rtmp_session_t *s, ngx_rtmp_close_stream_t *v)
{
ngx_rtmp_play_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx == NULL) {
goto next;
}
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: close_stream");
ngx_rtmp_play_do_stop(s);
ngx_rtmp_play_do_done(s);
if (ctx->file.fd != NGX_INVALID_FILE) {
ngx_close_file(ctx->file.fd);
ctx->file.fd = NGX_INVALID_FILE;
ngx_rtmp_send_stream_eof(s, NGX_RTMP_MSID);
ngx_rtmp_send_status(s, "NetStream.Play.Stop", "status",
"Stop video on demand");
}
if (ctx->file_id) {
ngx_rtmp_play_cleanup_local_file(s);
}
next:
return next_close_stream(s, v);
}
static ngx_int_t
ngx_rtmp_play_open(ngx_rtmp_session_t *s, double start)
{
ngx_rtmp_play_ctx_t *ctx;
ngx_event_t *e;
ngx_uint_t timestamp;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx->file.fd == NGX_INVALID_FILE) {
return NGX_ERROR;
}
if (ngx_rtmp_send_stream_begin(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_send_status(s, "NetStream.Play.Start", "status",
"Start video on demand")
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_rtmp_play_join(s) != NGX_OK) {
return NGX_ERROR;
}
e = &ctx->send_evt;
e->data = s;
e->handler = ngx_rtmp_play_send;
e->log = s->connection->log;
ngx_rtmp_send_recorded(s, 1);
if (ngx_rtmp_send_sample_access(s) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_play_do_init(s) != NGX_OK) {
return NGX_ERROR;
}
timestamp = ctx->post_seek != NGX_CONF_UNSET_UINT ? ctx->post_seek :
(start < 0 ? 0 : (ngx_uint_t) start);
if (ngx_rtmp_play_do_seek(s, timestamp) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_play_do_start(s) != NGX_OK) {
return NGX_ERROR;
}
ctx->opened = 1;
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_play_pause(ngx_rtmp_session_t *s, ngx_rtmp_pause_t *v)
{
ngx_rtmp_play_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx == NULL || ctx->file.fd == NGX_INVALID_FILE) {
goto next;
}
if (!ctx->opened) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: pause ignored");
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: pause=%i timestamp=%f",
(ngx_int_t) v->pause, v->position);
if (v->pause) {
if (ngx_rtmp_send_status(s, "NetStream.Pause.Notify", "status",
"Paused video on demand")
!= NGX_OK)
{
return NGX_ERROR;
}
ngx_rtmp_play_do_stop(s);
} else {
if (ngx_rtmp_send_status(s, "NetStream.Unpause.Notify", "status",
"Unpaused video on demand")
!= NGX_OK)
{
return NGX_ERROR;
}
ngx_rtmp_play_do_start(s); /*TODO: v->position? */
}
next:
return next_pause(s, v);
}
/*
客户端通知服务端停止或启动播放
*/
static ngx_int_t
ngx_rtmp_live_pause(ngx_rtmp_session_t *s, ngx_rtmp_pause_t *v)
{
ngx_rtmp_live_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL || ctx->stream == NULL) {
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: pause=%i timestamp=%f",
(ngx_int_t) v->pause, v->position);
if (v->pause) {
if (ngx_rtmp_send_status(s, "NetStream.Pause.Notify", "status",
"Paused live")
!= NGX_OK)
{
return NGX_ERROR;
}
ctx->paused = 1;
ngx_rtmp_live_stop(s);
} else {
if (ngx_rtmp_send_status(s, "NetStream.Unpause.Notify", "status",
"Unpaused live")
!= NGX_OK)
{
return NGX_ERROR;
}
ctx->paused = 0;
ngx_rtmp_live_start(s);
}
next:
return next_pause(s, v);
}
static void
ngx_rtmp_play_send(ngx_event_t *e)
{
ngx_rtmp_session_t *s = e->data;
ngx_rtmp_play_ctx_t *ctx;
ngx_int_t rc;
ngx_uint_t ts;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx == NULL || ctx->fmt == NULL || ctx->fmt->send == NULL) {
return;
}
ts = 0;
rc = ctx->fmt->send(s, &ctx->file, &ts);
if (rc > 0) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: send schedule %i", rc);
ngx_add_timer(e, rc);
return;
}
if (rc == NGX_AGAIN) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: send buffer full");
ngx_post_event(e, &s->posted_dry_events);
return;
}
if (rc == NGX_OK) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: send restart");
ngx_post_event(e, &ngx_posted_events);
return;
}
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: send done");
ngx_rtmp_send_stream_eof(s, NGX_RTMP_MSID);
ngx_rtmp_send_play_status(s, "NetStream.Play.Complete", "status", ts, 0);
ngx_rtmp_send_status(s, "NetStream.Play.Stop", "status", "Stopped");
}
static ngx_int_t
ngx_rtmp_record_node_close(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_err_t err;
void **app_conf;
ngx_int_t rc;
ngx_rtmp_record_done_t v;
rracf = rctx->conf;
if (rctx->file.fd == NGX_INVALID_FILE) {
return NGX_AGAIN;
}
if (ngx_close_file(rctx->file.fd) == NGX_FILE_ERROR) {
err = ngx_errno;
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V error closing file", &rracf->id);
ngx_rtmp_record_notify_error(s, rctx);
}
rctx->file.fd = NGX_INVALID_FILE;
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V closed", &rracf->id);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Stop", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
app_conf = s->app_conf;
if (rracf->rec_conf) {
s->app_conf = rracf->rec_conf;
}
v.recorder = rracf->id;
ngx_rtmp_record_make_path(s, rctx, &v.path);
rc = ngx_rtmp_record_done(s, &v);
s->app_conf = app_conf;
return rc;
}
static void
ngx_rtmp_record_notify_error(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf = rctx->conf;
rctx->failed = 1;
if (!rracf->notify) {
return;
}
ngx_rtmp_send_status(s, "NetStream.Record.Failed", "error",
rracf->id.data ? (char *) rracf->id.data : "");
}
static ngx_int_t
ngx_rtmp_live_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_live_app_conf_t *lacf;
ngx_rtmp_live_ctx_t *ctx;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL || !lacf->live) {
goto next;
}
/* join stream as subscriber */
ngx_rtmp_live_join(s, v->name, 0);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL) {
goto next;
}
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"live_play: name='%s' start=%uD duration=%uD reset=%d page_url='%V' addr_text='%V' tc_url='%V' flashver='%V'",
v->name, (uint32_t) v->start,
(uint32_t) v->duration, (uint32_t) v->reset,
&s->page_url, s->addr_text, &s->tc_url, &s->flashver);
ctx->silent = v->silent;
if (!ctx->silent && !lacf->play_restart && !ctx->hls) {
ngx_rtmp_send_status(s, "NetStream.Play.Start",
"status", "Start live");
ngx_rtmp_send_sample_access(s);
s->start = v->start;
s->duration = v->duration;
s->reset = v->reset;
s->silent = v->silent;
}
ngx_rtmp_playing++;
next:
return next_play(s, v);
}
static ngx_int_t
ngx_rtmp_play_open(ngx_rtmp_session_t *s, double start)
{
ngx_rtmp_play_ctx_t *ctx;
ngx_event_t *e;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx->file.fd == NGX_INVALID_FILE) {
return NGX_ERROR;
}
if (ngx_rtmp_send_stream_begin(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_send_status(s, "NetStream.Play.Start", "status",
"Start video on demand")
!= NGX_OK)
{
return NGX_ERROR;
}
e = &ctx->send_evt;
e->data = s;
e->handler = ngx_rtmp_play_send;
e->log = s->connection->log;
ngx_rtmp_send_recorded(s, 1);
if (ngx_rtmp_play_do_init(s) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_play_do_seek(s, start < 0 ? 0 : start) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_play_do_start(s) != NGX_OK) {
return NGX_ERROR;
}
return NGX_OK;
}
static void
ngx_live_relay_httpflv_error(ngx_rtmp_session_t *s, ngx_uint_t status)
{
ngx_live_stream_t *st;
ngx_rtmp_core_ctx_t *cctx;
char *code, *level, *desc;
size_t i;
for (i = 0; ngx_http_relay_status_code[i].status; ++i) {
if (status != ngx_http_relay_status_code[i].status) {
continue;
}
break;
}
code = ngx_http_relay_status_code[i].code;
level = ngx_http_relay_status_code[i].level;
desc = ngx_http_relay_status_code[i].desc;
ngx_log_error(NGX_LOG_ERR, s->log, 0,
"http relay transit, %d: level='%s' code='%s' description='%s'",
status, level, code, desc);
st = ngx_live_create_stream(&s->serverid, &s->stream);
cctx = st->play_ctx;
for (; cctx; cctx = cctx->next) {
cctx->session->status = status;
ngx_rtmp_send_status(cctx->session, code, level, desc);
if (ngx_strcmp(level, "error") == 0 && !cctx->session->static_pull) {
cctx->session->finalize_reason = NGX_LIVE_RELAY_TRANSIT;
ngx_rtmp_finalize_session(cctx->session);
}
}
}
static ngx_int_t
ngx_rtmp_live_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_live_app_conf_t *lacf;
ngx_rtmp_live_ctx_t *ctx;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL || !lacf->live) {
goto next;
}
ngx_log_debug4(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: play: name='%s' start=%uD duration=%uD reset=%d",
v->name, (uint32_t) v->start,
(uint32_t) v->duration, (uint32_t) v->reset);
/* join stream as subscriber */
ngx_rtmp_live_join(s, v->name, 0);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL) {
goto next;
}
ctx->silent = v->silent;
if (!ctx->silent && !lacf->play_restart) {
ngx_rtmp_send_status(s, "NetStream.Play.Start",
"status", "Start live");
ngx_rtmp_send_sample_access(s);
}
next:
return next_play(s, v);
}
static ngx_int_t
ngx_rtmp_play_seek(ngx_rtmp_session_t *s, ngx_rtmp_seek_t *v)
{
ngx_rtmp_play_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx == NULL || ctx->file.fd == NGX_INVALID_FILE) {
goto next;
}
if (!ctx->opened) {
ctx->post_seek = (ngx_uint_t) v->offset;
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: post seek=%ui", ctx->post_seek);
goto next;
}
if (ngx_rtmp_send_stream_eof(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
ngx_rtmp_play_do_seek(s, (ngx_uint_t) v->offset);
if (ngx_rtmp_send_status(s, "NetStream.Seek.Notify", "status", "Seeking")
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_rtmp_send_stream_begin(s, NGX_RTMP_MSID) != NGX_OK) {
return NGX_ERROR;
}
next:
return next_seek(s, v);
}
static ngx_int_t
ngx_rtmp_live_publish(ngx_rtmp_session_t *s, ngx_rtmp_publish_t *v)
{
ngx_rtmp_live_app_conf_t *lacf;
ngx_rtmp_live_ctx_t *ctx;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL || !lacf->live) {
goto next;
}
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"live_publish: name='%s' type='%s', page_url[len=%i]='%V', addr_text='%V', tc_url='%V'",
v->name, v->type, s->page_url.len, &s->page_url, s->addr_text, &s->tc_url);
/* join stream as publisher */
ngx_rtmp_live_join(s, v->name, 1);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL || !ctx->publishing) {
goto next;
}
ctx->silent = v->silent;
if (!ctx->silent) {
ngx_rtmp_send_status(s, "NetStream.Publish.Start",
"status", "Start publishing");
}
next:
return next_publish(s, v);
}
static ngx_int_t
ngx_rtmp_live_close_stream(ngx_rtmp_session_t *s, ngx_rtmp_close_stream_t *v)
{
ngx_rtmp_session_t *ss;
ngx_rtmp_live_ctx_t *ctx, **cctx, *pctx;
//**rcctx;modify for warning
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
goto next;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL) {
goto next;
}
if (ctx->stream == NULL) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: not joined");
goto next;
}
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: leave '%s', publisher=%i, ctx->stream->publishing=%i",
ctx->stream->name, ctx->publishing, ctx->stream->publishing);
if (ctx->stream->publishing && ctx->publishing) {
ctx->stream->publishing = 0;
}
for (cctx = &ctx->stream->ctx; *cctx; cctx = &(*cctx)->next) {
if (*cctx == ctx) {
*cctx = ctx->next;
break;
}
}
if (ctx->publishing || ctx->stream->active) {
ngx_rtmp_live_stop(s);
}
if (ctx->publishing) {
ngx_rtmp_send_status(s, "NetStream.Unpublish.Success",
"status", "Stop publishing");
ctx->stream->bw_in.bandwidth = 0;
ctx->stream->bw_real.bandwidth = 0;
ctx->stream->bw_out.bandwidth = 0;
if (ngx_rtmp_publishing > 0) {
--ngx_rtmp_publishing;
}
if (!lacf->idle_streams) {
for (pctx = ctx->stream->ctx; pctx; pctx = pctx->next) {
if (pctx->publishing == 0) {
ss = pctx->session;
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: no publisher");
ngx_rtmp_finalize_session(ss);
}
}
} else {
ngx_uint_t nplayer = 0;
for (pctx = ctx->stream->ctx; pctx; pctx = pctx->next) {
if (pctx->publishing == 0) {
if (ngx_memcmp(pctx->session->flashver.data, NGX_RTMP_RELAY_NAME, ngx_strlen(NGX_RTMP_RELAY_NAME)) == 0) {
ss = pctx->session;
ngx_log_error(NGX_LOG_INFO, ss->connection->log, 0,
"live: close relay session");
ngx_rtmp_finalize_session(ss);
}
nplayer++;
}
}
if (nplayer > 0) {
ngx_rtmp_live_checking_publish(s, ctx->stream);
}
}
}else {
if (ctx->stream->ctx != NULL &&
ctx->stream->ctx->next == NULL &&
ctx->stream->ctx->publishing) {
ngx_str_t strname;
strname.data = ctx->stream->name;
strname.len = ngx_strlen(ctx->stream->name);
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"live: last player close his connection.");
ngx_rtmp_relay_player_dry(s, &strname);
}
if (ngx_rtmp_playing > 0) {
--ngx_rtmp_playing;
}
}
if (ctx->stream->ctx) {
ctx->stream = NULL;
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: delete empty stream '%s'",
ctx->stream->name);
ngx_del_timer(&(ctx->stream->check_evt));
stream = ngx_rtmp_live_get_stream(s, ctx->stream->name, 0);
if (stream == NULL) {
goto next;
}
*stream = (*stream)->next;
ctx->stream->next = lacf->free_streams;
lacf->free_streams = ctx->stream;
ctx->stream = NULL;
if (!ctx->silent && !ctx->publishing && !lacf->play_restart) {
ngx_rtmp_send_status(s, "NetStream.Play.Stop", "status", "Stop live");
}
next:
return next_close_stream(s, v);
}
static ngx_int_t
ngx_rtmp_play_next_entry(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_rtmp_play_ctx_t *ctx;
ngx_rtmp_play_entry_t *pe;
u_char *p;
static u_char path[NGX_MAX_PATH + 1];
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
for ( ;; ) {
if (ctx->file.fd != NGX_INVALID_FILE) {
ngx_close_file(ctx->file.fd);
ctx->file.fd = NGX_INVALID_FILE;
}
if (ctx->file_id) {
ngx_rtmp_play_cleanup_local_file(s);
}
ctx->nentry = (ctx->nentry == NGX_CONF_UNSET_UINT ?
0 : ctx->nentry + 1);
if (ctx->nentry >= pacf->entries.nelts) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: all entries failed");
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"Video on demand stream not found");
break;
}
pe = ngx_rtmp_play_get_current_entry(s);
ngx_log_debug4(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: trying %s entry %ui/%uz '%V'",
pe->url ? "remote" : "local",
ctx->nentry + 1, pacf->entries.nelts,
pe->url ? &pe->url->url : pe->root);
/* open remote */
if (pe->url) {
return ngx_rtmp_play_open_remote(s, v);
}
/* open local */
p = ngx_snprintf(path, NGX_MAX_PATH, "%V/%s%V",
pe->root, v->name + ctx->pfx_size, &ctx->sfx);
*p = 0;
ctx->file.fd = ngx_open_file(path, NGX_FILE_RDONLY, NGX_FILE_OPEN,
cscf->file_access);
if (ctx->file.fd == NGX_INVALID_FILE) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, ngx_errno,
"play: error opening file '%s'", path);
continue;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: open local file '%s'", path);
if (ngx_rtmp_play_open(s, v->start) != NGX_OK) {
return NGX_ERROR;
}
break;
}
return next_play(s, v);
}
static ngx_int_t
ngx_rtmp_play_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_main_conf_t *pmcf;
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_play_ctx_t *ctx;
u_char *p;
ngx_rtmp_play_fmt_t *fmt, **pfmt;
ngx_str_t *pfx, *sfx;
ngx_str_t name;
ngx_uint_t n;
static ngx_str_t nosfx;
static u_char path[NGX_MAX_PATH];
pmcf = ngx_rtmp_get_module_main_conf(s, ngx_rtmp_play_module);
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
if (pacf == NULL || (pacf->root.len == 0 && pacf->url == NULL)) {
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: play name='%s' timestamp=%i",
v->name, (ngx_int_t) v->start);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx && ctx->file.fd != NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: already playing");
goto next;
}
/* check for double-dot in v->name;
* we should not move out of play directory */
for (p = v->name; *p; ++p) {
if (ngx_path_separator(p[0]) &&
p[1] == '.' && p[2] == '.' &&
ngx_path_separator(p[3]))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: bad name '%s'", v->name);
return NGX_ERROR;
}
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_play_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_play_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->file.log = s->connection->log;
name.len = ngx_strlen(v->name);
name.data = v->name;
pfmt = pmcf->fmts.elts;
for (n = 0; n < pmcf->fmts.nelts; ++n, ++pfmt) {
fmt = *pfmt;
pfx = &fmt->pfx;
sfx = &fmt->sfx;
if (pfx->len == 0 && ctx->fmt == NULL) {
ctx->fmt = fmt;
}
if (pfx->len && name.len >= pfx->len &&
ngx_strncasecmp(pfx->data, name.data, pfx->len) == 0)
{
name.data += pfx->len;
name.len -= pfx->len;
ctx->fmt = fmt;
break;
}
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len) == 0)
{
ctx->fmt = fmt;
}
}
if (ctx->fmt == NULL) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: fmt not found");
goto next;
}
ctx->file.fd = NGX_INVALID_FILE;
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"play %s: %V", pacf->url ? "remote" : "local",
&ctx->fmt->name);
sfx = &ctx->fmt->sfx;
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len)
== 0)
{
sfx = &nosfx;
}
/* remote? */
if (pacf->url) {
ctx->name.data = ngx_palloc(s->connection->pool, name.len + sfx->len);
if (ctx->name.data == NULL) {
return NGX_ERROR;
}
p = ngx_sprintf(ctx->name.data, "%V%V", &name, sfx);
*p = 0;
ctx->name.len = p - ctx->name.data;
return ngx_rtmp_play_open_remote(s, v);
}
/* open local */
p = ngx_snprintf(path, sizeof(path), "%V/%V%V", &pacf->root, &name, sfx);
*p = 0;
ctx->file.fd = ngx_open_file(path, NGX_FILE_RDONLY, NGX_FILE_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ctx->file.fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, ngx_errno,
"play: error opening file '%s'", path);
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"Video on demand stream not found");
return NGX_OK;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: opened local file '%s'", path);
if (ngx_rtmp_play_open(s, v->start) != NGX_OK) {
return NGX_ERROR;
}
next:
return next_play(s, v);
}
static ngx_int_t
ngx_rtmp_record_node_open(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_err_t err;
ngx_str_t path;
rracf = rctx->conf;
if (rctx->file.fd != NGX_INVALID_FILE) {
return NGX_AGAIN;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opening", &rracf->id);
ngx_memzero(rctx, sizeof(*rctx));
rctx->conf = rracf;
rctx->last = *ngx_cached_time;
rctx->timestamp = ngx_cached_time->sec;
ngx_rtmp_record_make_path(s, rctx, &path);
ngx_memzero(&rctx->file, sizeof(rctx->file));
rctx->file.offset = 0;
rctx->file.log = s->connection->log;
rctx->file.fd = ngx_open_file(path.data, NGX_FILE_WRONLY, NGX_FILE_TRUNCATE,
NGX_FILE_DEFAULT_ACCESS);
if (rctx->file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V failed to open file '%V'",
&rracf->id, &path);
}
ngx_rtmp_record_notify_error(s, rctx);
return NGX_OK;
}
if (rracf->lock_file) {
err = ngx_lock_fd(rctx->file.fd);
if (err) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V lock failed", &rracf->id);
}
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opened '%V'", &rracf->id, &path);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Start", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_live_close_stream(ngx_rtmp_session_t *s, ngx_rtmp_close_stream_t *v)
{
ngx_rtmp_session_t *ss;
ngx_rtmp_live_ctx_t *ctx, **cctx, *pctx;
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
goto next;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL) {
goto next;
}
if (ctx->stream == NULL) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: not joined");
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: leave '%s'", ctx->stream->name);
if (ctx->stream->publishing && ctx->publishing) {
ctx->stream->publishing = 0;
}
for (cctx = &ctx->stream->ctx; *cctx; cctx = &(*cctx)->next) {
if (*cctx == ctx) {
*cctx = ctx->next;
break;
}
}
if (ctx->publishing || ctx->stream->active) {
ngx_rtmp_live_stop(s);
}
if (ctx->publishing) {
ngx_rtmp_send_status(s, "NetStream.Unpublish.Success",
"status", "Stop publishing");
if (!lacf->idle_streams) {
for (pctx = ctx->stream->ctx; pctx; pctx = pctx->next) {
if (pctx->publishing == 0) {
ss = pctx->session;
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: no publisher");
ngx_rtmp_finalize_session(ss);
}
}
}
}
if (ctx->stream->ctx) {
ctx->stream = NULL;
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: delete empty stream '%s'",
ctx->stream->name);
stream = ngx_rtmp_live_get_stream(s, ctx->stream->name, 0);
if (stream == NULL) {
goto next;
}
*stream = (*stream)->next;
ctx->stream->next = lacf->free_streams;
lacf->free_streams = ctx->stream;
ctx->stream = NULL;
if (!ctx->silent && !ctx->publishing && !lacf->play_restart) {
ngx_rtmp_send_status(s, "NetStream.Play.Stop", "status", "Stop live");
}
next:
return next_close_stream(s, v);
}
/*
关闭流
*/
static ngx_int_t
ngx_rtmp_live_close_stream(ngx_rtmp_session_t *s, ngx_rtmp_close_stream_t *v)
{
ngx_rtmp_session_t *ss;
ngx_rtmp_live_ctx_t *ctx;
ngx_rtmp_live_ctx_t **cctx;
ngx_rtmp_live_ctx_t *pctx;
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
goto next;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx == NULL) {
goto next;
}
if (ctx->stream == NULL) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: not joined");
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: leave '%s'", ctx->stream->name);
if (ctx->stream->publishing && ctx->publishing) {
ctx->stream->publishing = 0;
}
/* 从直播流中删除当前播放流 */
for (cctx = &ctx->stream->ctx; *cctx; cctx = &(*cctx)->next) {
if (*cctx == ctx) {
/* 为当前流，删除，指向当前流指向的下一条流 */
*cctx = ctx->next;
break;
}
}
/* 正在发布或者播放，则停止 */
if (ctx->publishing || ctx->stream->active) {
ngx_rtmp_live_stop(s);
}
/* 如果是发布端关闭，需要关闭对应的播放流 */
if (ctx->publishing) {
ngx_rtmp_send_status(s, "NetStream.Unpublish.Success",
"status", "Stop publishing");
if (!lacf->idle_streams) {
for (pctx = ctx->stream->ctx; pctx; pctx = pctx->next) {
if (pctx->publishing == 0) {
ss = pctx->session;
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: no publisher");
ngx_rtmp_finalize_session(ss);
}
}
}
}
if (ctx->stream->ctx) {
/* 该rtmp流对应的直播流还有其他rtmp流 */
ctx->stream = NULL;
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: delete empty stream '%s'",
ctx->stream->name);
/* 该rtmp流对应的直播流没有其他rtmp流，回收直播流内存 */
stream = ngx_rtmp_live_get_stream(s, ctx->stream->name, 0);
if (stream == NULL) {
goto next;
}
*stream = (*stream)->next; /* 暂时无使用 */
ctx->stream->next = lacf->free_streams; /* 将stream 作为头节点加入释放流链链表 */
lacf->free_streams = ctx->stream; /* 更新释放流链表地址 */
ctx->stream = NULL; /* 置NULL,不关联直播流 */
if (!ctx->silent && !ctx->publishing && !lacf->play_restart) {
ngx_rtmp_send_status(s, "NetStream.Play.Stop", "status", "Stop live");
}
next:
return next_close_stream(s, v);
}
/*
rtmp session加入直播流
*/
static void
ngx_rtmp_live_join(ngx_rtmp_session_t *s, u_char *name, unsigned publisher)
{
ngx_rtmp_live_ctx_t *ctx;
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
return;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx && ctx->stream) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: already joined");
return;
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_live_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_live_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->session = s;
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: join '%s'", name);
/* 直播流 用name作key */
stream = ngx_rtmp_live_get_stream(s, name, publisher || lacf->idle_streams);
if (stream == NULL ||
!(publisher || (*stream)->publishing || lacf->idle_streams))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: stream not found");
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"No such stream");
ngx_rtmp_finalize_session(s);
return;
}
if (publisher) {
if ((*stream)->publishing) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: already publishing");
ngx_rtmp_send_status(s, "NetStream.Publish.BadName", "error",
"Already publishing");
return;
}
(*stream)->publishing = 1;
}
ctx->stream = *stream; /* 加入直播流指针 */
ctx->publishing = publisher;
/* 加入直播流 ctx链表 */
ctx->next = (*stream)->ctx;
(*stream)->ctx = ctx;
if (lacf->buflen) {
s->out_buffer = 1;
}
ctx->cs[0].csid = NGX_RTMP_CSID_VIDEO;
ctx->cs[1].csid = NGX_RTMP_CSID_AUDIO;
/* 发布已经开启，开启播放 */
if (!ctx->publishing && ctx->stream->active) {
ngx_rtmp_live_start(s);
}
}
static void
ngx_rtmp_live_join(ngx_rtmp_session_t *s, u_char *name, unsigned publisher)
{
ngx_rtmp_live_ctx_t *ctx;
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
return;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx && ctx->stream) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: already joined");
return;
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_live_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_live_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->session = s;
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"live: join '%s'", name);
stream = ngx_rtmp_live_get_stream(s, name, publisher || lacf->idle_streams || s->relay_type != NGX_NONE_RELAY);
if (stream == NULL ||
!(publisher || (*stream)->publishing || lacf->idle_streams || s->relay_type != NGX_NONE_RELAY ))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: stream not found");
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"No such stream");
ngx_rtmp_finalize_session(s);
return;
}
if (publisher) {
if ((*stream)->publishing) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: '%V/%s', already publishing", &s->app, name);
ngx_rtmp_send_status(s, "NetStream.Publish.BadName", "error",
"Already publishing");
return;
}
(*stream)->publishing = 1;
//del checking timer
ngx_del_timer(&(*stream)->check_evt);
} else {
ngx_str_t strname;
strname.data = name;
strname.len = ngx_strlen(name);
ngx_rtmp_relay_player_new(s, &strname);
}
ctx->stream = *stream;
ctx->publishing = publisher;
ctx->next = (*stream)->ctx;
ctx->hls = s->hls;
ngx_memcpy(s->name, name, ngx_strlen(name));
s->name[ngx_strlen(name)] = 0;
(*stream)->ctx = ctx;
if (lacf->buflen) {
s->out_buffer = 1;
}
ctx->cs[0].csid = NGX_RTMP_CSID_VIDEO;
ctx->cs[1].csid = NGX_RTMP_CSID_AUDIO;
if (!ctx->publishing && ctx->stream->active && !ctx->hls) {
ngx_rtmp_live_start(s);
}
if (!publisher && !(*stream)->publishing) {
ngx_str_t strname;
strname.data = name;
strname.len = ngx_strlen(name);
if (ngx_rtmp_relay_relaying(s, &strname) == NGX_ERROR) {
ngx_rtmp_live_checking_publish(s, *stream);
}
}
}
static ngx_int_t
ngx_rtmp_record_node_open(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_err_t err;
ngx_str_t path;
ngx_int_t mode, create_mode;
u_char buf[8], *p;
off_t file_size;
uint32_t tag_size, mlen, timestamp;
rracf = rctx->conf;
tag_size = 0;
if (rctx->file.fd != NGX_INVALID_FILE) {
return NGX_AGAIN;
}
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opening", &rracf->id);
ngx_memzero(rctx, sizeof(*rctx));
rctx->conf = rracf;
rctx->last = *ngx_cached_time;
rctx->timestamp = ngx_cached_time->sec;
ngx_rtmp_record_make_path(s, rctx, &path);
mode = rracf->append ? NGX_FILE_RDWR : NGX_FILE_WRONLY;
create_mode = rracf->append ? NGX_FILE_CREATE_OR_OPEN : NGX_FILE_TRUNCATE;
ngx_memzero(&rctx->file, sizeof(rctx->file));
rctx->file.offset = 0;
rctx->file.log = s->connection->log;
rctx->file.fd = ngx_open_file(path.data, mode, create_mode,
cscf->file_access);
ngx_str_set(&rctx->file.name, "recorded");
if (rctx->file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V failed to open file '%V'",
&rracf->id, &path);
}
ngx_rtmp_record_notify_error(s, rctx);
return NGX_OK;
}
#if !(NGX_WIN32)
if (rracf->lock_file) {
err = ngx_lock_fd(rctx->file.fd);
if (err) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V lock failed", &rracf->id);
}
}
#endif
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opened '%V'", &rracf->id, &path);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Start", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
if (rracf->append) {
file_size = 0;
timestamp = 0;
#if (NGX_WIN32)
{
LONG lo, hi;
lo = 0;
hi = 0;
lo = SetFilePointer(rctx->file.fd, lo, &hi, FILE_END);
file_size = (lo == INVALID_SET_FILE_POINTER ?
(off_t) -1 : (off_t) hi << 32 | (off_t) lo);
}
#else
file_size = lseek(rctx->file.fd, 0, SEEK_END);
#endif
if (file_size == (off_t) -1) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V seek failed", &rracf->id);
goto done;
}
if (file_size < 4) {
goto done;
}
if (ngx_read_file(&rctx->file, buf, 4, file_size - 4) != 4) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag size read failed", &rracf->id);
goto done;
}
p = (u_char *) &tag_size;
p[0] = buf[3];
p[1] = buf[2];
p[2] = buf[1];
p[3] = buf[0];
if (tag_size == 0 || tag_size + 4 > file_size) {
file_size = 0;
goto done;
}
if (ngx_read_file(&rctx->file, buf, 8, file_size - tag_size - 4) != 8)
{
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag read failed", &rracf->id);
goto done;
}
p = (u_char *) &mlen;
p[0] = buf[3];
p[1] = buf[2];
p[2] = buf[1];
p[3] = 0;
if (tag_size != mlen + 11) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag size mismatch: "
"tag_size=%uD, mlen=%uD", &rracf->id, tag_size, mlen);
goto done;
}
p = (u_char *) ×tamp;
p[3] = buf[7];
p[0] = buf[6];
p[1] = buf[5];
p[2] = buf[4];
done:
rctx->file.offset = file_size;
rctx->time_shift = timestamp;
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: append offset=%O, time=%uD, tag_size=%uD",
file_size, timestamp, tag_size);
}
return NGX_OK;
}
static void
ngx_rtmp_live_join(ngx_rtmp_session_t *s, u_char *name, unsigned publisher)
{
ngx_rtmp_live_ctx_t *ctx;
ngx_rtmp_live_stream_t **stream;
ngx_rtmp_live_app_conf_t *lacf;
// ngx_rtmp_session_t *ss;
// ngx_rtmp_live_ctx_t *pctx;
lacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_live_module);
if (lacf == NULL) {
return;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (ctx && ctx->stream) {
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"live: already joined '%s'", name);
return;
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_live_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_live_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->session = s;
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"live: join '%s'", name);
// 获取该name对应的stream,通常在publish的时候创建，在播放的时候直接获取就即可
stream = ngx_rtmp_live_get_stream(s, name, publisher || lacf->idle_streams);
// 播放端 在拉流的时候，流还没有建立，则结束session
if (stream == NULL ||
!(publisher || (*stream)->publishing || lacf->idle_streams))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: name = %s stream not found", name);
ngx_rtmp_send_status(s, "NetStream.Play.StreamNotFound", "error",
"No such stream");
ngx_rtmp_finalize_session(s);
return;
}
// 上传端在推流的时候，发现流名称已经被占用，则发送status消息
if (publisher) {
if ((*stream)->publishing) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"live: already publishing");
ngx_rtmp_send_status(s, "NetStream.Publish.BadName", "error",
"Already publishing");
return;
}
(*stream)->publishing = 1;
}
//这个stream对应的是publish时创建的流
ctx->stream = *stream;
ctx->publishing = publisher;
// 下面两个操作是将新创建的ctx插入stream的ctx链表的头部
ctx->next = (*stream)->ctx;
(*stream)->ctx = ctx;
if (lacf->buflen) {
s->out_buffer = 1;
}
ctx->cs[0].csid = NGX_RTMP_CSID_VIDEO;
ctx->cs[1].csid = NGX_RTMP_CSID_AUDIO;
// 作为一个subscriber，会执行
if (!ctx->publishing && ctx->stream->active) {
ngx_rtmp_live_start(s);
}
}