Ejemplo n.º 1
0
void DeCsaTsBuffer::Action(void)
{
  if (ringBuffer)
  {
    bool firstRead = true;
    cPoller Poller(f);
    while (Running())
    {
      if (firstRead || Poller.Poll(100))
      {
        firstRead = false;
        int r = ringBuffer->Read(f);
        if (r < 0 && FATALERRNO)
        {
          if (errno == EOVERFLOW)
            ERRORLOG("driver buffer overflow on device %d", cardIndex);
          else
          {
            LOG_ERROR;
            break;
          }
        }
      }
    }
  }
}
Ejemplo n.º 2
0
int cKbdRemote::ReadKey(void)
{
  cPoller Poller(STDIN_FILENO);
  if (Poller.Poll(50)) {
     uchar ch = 0;
     int r = safe_read(STDIN_FILENO, &ch, 1);
     if (r == 1)
        return ch;
     if (r < 0)
        LOG_ERROR_STR("cKbdRemote");
     }
  return -1;
}
Ejemplo n.º 3
0
bool cDvbTuner::GetFrontendStatus(fe_status_t &Status, int TimeoutMs)
{
  if (TimeoutMs) {
     cPoller Poller(fd_frontend);
     if (Poller.Poll(TimeoutMs)) {
        dvb_frontend_event Event;
        while (ioctl(fd_frontend, FE_GET_EVENT, &Event) == 0)
              ; // just to clear the event queue - we'll read the actual status below
        }
     }
  do {
     int stat = ioctl(fd_frontend, FE_READ_STATUS, &Status);
     if (stat == 0)
        return true;
     if (stat < 0) {
        if (errno == EINTR)
           continue;
        }
     } while (0);
  return false;
}
Ejemplo n.º 4
0
void cStreamdevFilters::Action(void) {
	int fails = 0;

	while (Running()) {
		const uchar *block = m_TSBuffer->Get();
		if (block) {
			u_short pid = (((u_short)block[1] & PID_MASK_HI) << 8) | block[2];
			u_char tid = block[3];
			bool Pusi = block[1] & 0x40;
			// proprietary extension
			int len = block[4];
#if 0
			if (block[1] == 0xff &&
					block[2] == 0xff &&
					block[3] == 0xff &&
					block[4] == 0x7f)
				isyslog("*********** TRANSPONDER -> %s **********", block+5);
#endif
			LOCK_THREAD;
			cStreamdevFilter *f = First();
			while (f) {
				cStreamdevFilter *next = Next(f);
				if (f->Matches(pid, tid)) {

					if (f->PutSection(block + 5, len, Pusi))
						break;

					if (errno != ECONNREFUSED && 
							errno != ECONNRESET &&
							errno != EPIPE) {
						Dprintf("FATAL ERROR: %m\n");
						esyslog("streamdev-client: couldn't send section packet: %m");
					}
					ClientSocket.SetFilter(f->Pid(), f->Tid(), f->Mask(), false);
					Del(f);
					// Filter was closed.
					//  - need to check remaining filters for another match
				}
				f = next;
			}
		} else {
#if 1 // TODO: this should be fixed in vdr cTSBuffer
			// Check disconnection
			int fd = *ClientSocket.DataSocket(siLiveFilter);
			if(fd < 0)
				break;
			cPoller Poller(fd);
			if (Poller.Poll()) {
				char tmp[1];
				errno = 0;
				Dprintf("cStreamdevFilters::Action(): checking connection");
				if (recv(fd, tmp, 1, MSG_PEEK) == 0 && errno != EAGAIN) {
					++fails;
					if (fails >= 10) {
						esyslog("cStreamdevFilters::Action(): stream disconnected ?");
						ClientSocket.CloseDataConnection(siLiveFilter);
						break;
					}
				} else {
					fails = 0;
				}
			} else {
				fails = 0;
			}
			cCondWait::SleepMs(10);
#endif
		}
	}

	DELETENULL(m_TSBuffer);
	dsyslog("StreamdevFilters::Action() ended");
}
void cRawWriter::Action(void)
{
  uint64_t NextHeaderPos = 0ULL;
  uint64_t GetPos        = 0ULL;
  cPoller  Poller(m_fd, true);

  while (Running()) {

    if (!Poller.Poll(100))
      continue;

    uint64_t StartPos;
    int      Count = 0;
    int      n;
    uchar   *Data = m_RingBuffer.Get(Count);

    if (!Data || Count <= 0)
      continue;

    Lock(); // uint64_t m_DiscardStart can not be read atomically (IA32)
    StartPos = m_DiscardEnd;
    Unlock();

    // Next frame ?
    if (NextHeaderPos == GetPos) {

      // Discard data ?
      if (StartPos > GetPos) {
        // we're at frame boundary
        Count = min(Count, (int)(StartPos - GetPos));

        m_RingBuffer.Del(Count);
        GetPos += Count;
        NextHeaderPos = GetPos;
        continue;
      }

      // Next frame

      if (Count < 6)
        LOGMSG("cBackgroundWriter @NextHeaderPos: Count < header size !");

      int packlen = DATA_IS_TS(Data) ? TS_SIZE : pes_packet_len(Data, Count);

      if (Count < packlen)
        ;//LOGMSG("Count = %d < %d", Count,
      //   header->len + sizeof(stream_tcp_header_t));
      else
        Count = packlen;
      NextHeaderPos = GetPos + packlen;

    } else {
      // end of prev frame
      Count = min(Count, (int)(NextHeaderPos-GetPos));
    }

    errno = 0;
    n = write(m_fd, Data, Count);

    if (n <= 0) {
      if (n == 0) {
        LOGERR("cBackgroundWriter: Client disconnected data stream ?");
        break;
      }

      if (errno == EINTR || errno == EWOULDBLOCK)
        continue;

      LOGERR("cBackgroundWriter: TCP write error");
      break;
    }

    GetPos += n;
    m_RingBuffer.Del(n);
  }

  m_RingBuffer.Clear();
}
void cTcpWriter::Action(void)
{
  uint64_t NextHeaderPos = 0;
  uint64_t GetPos        = 0;
  cPoller  Poller (m_fd, true);
  bool     CorkReq = false;

  while (Running()) {

    if (!Poller.Poll(100))
      continue;

    if (CorkReq && m_RingBuffer.Available() <= 0) {
      // Force TCP packet to avoid delaying control messages
      Cork();
      CorkReq = false;
    }

    uint64_t StartPos;
    int      Count = 0;
    int      n;
    uchar   *Data = m_RingBuffer.Get(Count);

    if (!Data || Count <= 0)
      continue;

    Lock(); // uint64_t m_DiscardStart can not be read atomically (IA32)
    StartPos = m_DiscardEnd;
    Unlock();

    // Next frame ?
    if (NextHeaderPos == GetPos) {

      // Discard data ?
      if (StartPos > GetPos) {
        // we're at frame boundary
        // drop only data packets, not control messages
        stream_tcp_header_t *header = (stream_tcp_header_t*)Data;
        if (eStreamId(header->stream) == sidVdr) {
          Count = min(Count, (int)(StartPos - GetPos));

          // size of next (complete) packet.
          // drop only one packet at time.
          int pkt_len = ntohl(header->len) + sizeof(stream_tcp_header_t);
          if (Count >= pkt_len) {
            // drop only complete packets.
            // some packets are not dropped (packets overlapping end of ringbuffer)
            Count = pkt_len;

            m_RingBuffer.Del(Count);
            GetPos += Count;
            NextHeaderPos = GetPos;

            CorkReq = true; // force sending last frame

            continue;
          }
        }
      }

      // Next frame

      if (Count < (int)sizeof(stream_tcp_header_t))
        LOGMSG("cBackgroundWriter @NextHeaderPos: Count < header size !");

      // limit single write to size of next (complete) packet.
      // (we need to track packet boundaries)
      stream_tcp_header_t *header = (stream_tcp_header_t*)Data;
      int pkt_len = ntohl(header->len) + sizeof(stream_tcp_header_t);
      if (Count > pkt_len)
        Count = pkt_len;
      // next packet start position in stream
      NextHeaderPos = GetPos + pkt_len;

      // check for control message
      if (eStreamId(header->stream) == sidControl)
        CorkReq = true;

    } else {
      // end of prev frame
      Count = min(Count, (int)(NextHeaderPos-GetPos));
    }

    errno = 0;
    n = write(m_fd, Data, Count);

    if (n <= 0) {

      if (n == 0) {
        LOGERR("cBackgroundWriter: Client disconnected data stream ?");
        break;
      }

      if (errno == EINTR || errno == EWOULDBLOCK)
        continue;

      LOGERR("cBackgroundWriter: TCP write error");
      break;
    }

    GetPos += n;
    m_RingBuffer.Del(n);
  }

  m_RingBuffer.Clear();
}