void RTMPPublisher::SetupSendBacklogEvent()
{
zero (&sendBacklogOverlapped, sizeof(sendBacklogOverlapped));
ResetEvent (hSendBacklogEvent);
sendBacklogOverlapped.hEvent = hSendBacklogEvent;
idealsendbacklognotify (rtmp->m_sb.sb_socket, &sendBacklogOverlapped, NULL);
}
void RTMPPublisher::SetupSendBacklogEvent()
{
OVERLAPPED overlapped;
zero (&overlapped, sizeof(overlapped));
overlapped.hEvent = hSendBacklogEvent;
idealsendbacklognotify(rtmp->m_sb.sb_socket, &overlapped, NULL);
}
static inline void socket_thread_windows_internal(struct rtmp_stream *stream)
{
bool can_write = false;
int delay_time;
size_t latency_packet_size;
uint64_t last_send_time = 0;
HANDLE send_backlog_event;
OVERLAPPED send_backlog_overlapped;
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);
WSAEventSelect(stream->rtmp.m_sb.sb_socket,
stream->socket_available_event,
FD_READ|FD_WRITE|FD_CLOSE);
send_backlog_event = CreateEvent(NULL, true, false, NULL);
if (stream->low_latency_mode) {
delay_time = 1000 / LATENCY_FACTOR;
latency_packet_size = stream->write_buf_size / (LATENCY_FACTOR - 2);
} else {
latency_packet_size = stream->write_buf_size;
delay_time = 0;
}
if (!stream->disable_send_window_optimization) {
memset(&send_backlog_overlapped, 0,
sizeof(send_backlog_overlapped));
send_backlog_overlapped.hEvent = send_backlog_event;
idealsendbacklognotify(stream->rtmp.m_sb.sb_socket,
&send_backlog_overlapped, NULL);
} else {
blog(LOG_INFO, "socket_thread_windows: Send window "
"optimization disabled by user.");
}
HANDLE objs[3];
objs[0] = stream->socket_available_event;
objs[1] = stream->buffer_has_data_event;
objs[2] = send_backlog_event;
for (;;) {
if (os_event_try(stream->send_thread_signaled_exit) != EAGAIN) {
pthread_mutex_lock(&stream->write_buf_mutex);
if (stream->write_buf_len == 0) {
//blog(LOG_DEBUG, "Exiting on empty buffer");
pthread_mutex_unlock(&stream->write_buf_mutex);
os_event_reset(stream->send_thread_signaled_exit);
break;
}
pthread_mutex_unlock(&stream->write_buf_mutex);
}
int status = WaitForMultipleObjects(3, objs, false, INFINITE);
if (status == WAIT_ABANDONED || status == WAIT_FAILED) {
blog(LOG_ERROR, "socket_thread_windows: Aborting due "
"to WaitForMultipleObjects failure");
fatal_sock_shutdown(stream);
return;
}
if (status == WAIT_OBJECT_0) {
/* Socket event */
if (!socket_event(stream, &can_write, last_send_time))
return;
} else if (status == WAIT_OBJECT_0 + 2) {
/* Ideal send backlog event */
ideal_send_backlog_event(stream, &can_write);
ResetEvent(send_backlog_event);
idealsendbacklognotify(stream->rtmp.m_sb.sb_socket,
&send_backlog_overlapped, NULL);
continue;
}
if (can_write) {
for (;;) {
enum data_ret ret = write_data(
stream,
&can_write,
&last_send_time,
latency_packet_size,
delay_time);
switch (ret) {
case RET_BREAK:
goto exit_write_loop;
case RET_FATAL:
return;
case RET_CONTINUE:;
}
}
}
exit_write_loop:;
}
if (stream->rtmp.m_sb.sb_socket != INVALID_SOCKET)
WSAEventSelect(stream->rtmp.m_sb.sb_socket,
stream->socket_available_event, 0);
blog(LOG_INFO, "socket_thread_windows: Normal exit");
}
