Beispiel #1
0
static GstFlowReturn
mpegts_base_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
  GstFlowReturn res = GST_FLOW_OK;
  MpegTSBase *base;
  MpegTSPacketizerPacketReturn pret;
  MpegTSPacketizer2 *packetizer;
  MpegTSPacketizerPacket packet;
  MpegTSBaseClass *klass;

  base = GST_MPEGTS_BASE (parent);
  klass = GST_MPEGTS_BASE_GET_CLASS (base);

  packetizer = base->packetizer;

  if (klass->input_done)
    gst_buffer_ref (buf);

  if (GST_BUFFER_IS_DISCONT (buf)) {
    GST_DEBUG_OBJECT (base, "Got DISCONT buffer, flushing");
    res = mpegts_base_drain (base);
    if (G_UNLIKELY (res != GST_FLOW_OK))
      return res;

    mpegts_base_flush (base, FALSE);
    /* In the case of discontinuities in push-mode with TIME segment
     * we want to drop all previous observations (hard:TRUE) from
     * the packetizer */
    if (base->mode == BASE_MODE_PUSHING
        && base->segment.format == GST_FORMAT_TIME)
      mpegts_packetizer_flush (base->packetizer, TRUE);
    else
      mpegts_packetizer_flush (base->packetizer, FALSE);
  }

  mpegts_packetizer_push (base->packetizer, buf);

  while (res == GST_FLOW_OK) {
    pret = mpegts_packetizer_next_packet (base->packetizer, &packet);

    /* If we don't have enough data, return */
    if (G_UNLIKELY (pret == PACKET_NEED_MORE))
      break;

    if (G_UNLIKELY (pret == PACKET_BAD)) {
      /* bad header, skip the packet */
      GST_DEBUG_OBJECT (base, "bad packet, skipping");
      goto next;
    }

    if (klass->inspect_packet)
      klass->inspect_packet (base, &packet);

    /* If it's a known PES, push it */
    if (MPEGTS_BIT_IS_SET (base->is_pes, packet.pid)) {
      /* push the packet downstream */
      if (base->push_data)
        res = klass->push (base, &packet, NULL);
    } else if (packet.payload
        && MPEGTS_BIT_IS_SET (base->known_psi, packet.pid)) {
      /* base PSI data */
      GList *others, *tmp;
      GstMpegtsSection *section;

      section = mpegts_packetizer_push_section (packetizer, &packet, &others);
      if (section)
        mpegts_base_handle_psi (base, section);
      if (G_UNLIKELY (others)) {
        for (tmp = others; tmp; tmp = tmp->next)
          mpegts_base_handle_psi (base, (GstMpegtsSection *) tmp->data);
        g_list_free (others);
      }

      /* we need to push section packet downstream */
      if (base->push_section)
        res = klass->push (base, &packet, section);

    } else if (packet.payload && packet.pid != 0x1fff)
      GST_LOG ("PID 0x%04x Saw packet on a pid we don't handle", packet.pid);

  next:
    mpegts_packetizer_clear_packet (base->packetizer, &packet);
  }

  if (klass->input_done) {
    if (res == GST_FLOW_OK)
      res = klass->input_done (base, buf);
    else
      gst_buffer_unref (buf);
  }

  return res;
}
Beispiel #2
0
static GstFlowReturn
mpegts_base_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
  GstFlowReturn res = GST_FLOW_OK;
  MpegTSBase *base;
  MpegTSPacketizerPacketReturn pret;
  MpegTSPacketizer2 *packetizer;
  MpegTSPacketizerPacket packet;
  MpegTSBaseClass *klass;

  base = GST_MPEGTS_BASE (parent);
  klass = GST_MPEGTS_BASE_GET_CLASS (base);

  packetizer = base->packetizer;

  if (G_UNLIKELY (base->queried_latency == FALSE)) {
    query_upstream_latency (base);
  }

  if (klass->input_done)
    gst_buffer_ref (buf);

  mpegts_packetizer_push (base->packetizer, buf);

  while (res == GST_FLOW_OK) {
    pret = mpegts_packetizer_next_packet (base->packetizer, &packet);

    /* If we don't have enough data, return */
    if (G_UNLIKELY (pret == PACKET_NEED_MORE))
      break;

    if (G_UNLIKELY (pret == PACKET_BAD)) {
      /* bad header, skip the packet */
      GST_DEBUG_OBJECT (base, "bad packet, skipping");
      goto next;
    }

    /* If it's a known PES, push it */
    if (MPEGTS_BIT_IS_SET (base->is_pes, packet.pid)) {
      /* push the packet downstream */
      if (base->push_data)
        res = klass->push (base, &packet, NULL);
    } else if (packet.payload
        && MPEGTS_BIT_IS_SET (base->known_psi, packet.pid)) {
      /* base PSI data */
      GList *others, *tmp;
      GstMpegTsSection *section;

      section = mpegts_packetizer_push_section (packetizer, &packet, &others);
      if (section)
        mpegts_base_handle_psi (base, section);
      if (G_UNLIKELY (others)) {
        for (tmp = others; tmp; tmp = tmp->next)
          mpegts_base_handle_psi (base, (GstMpegTsSection *) tmp->data);
        g_list_free (others);
      }

      /* we need to push section packet downstream */
      if (base->push_section)
        res = klass->push (base, &packet, section);

    } else if (packet.payload && packet.pid != 0x1fff)
      GST_LOG ("PID 0x%04x Saw packet on a pid we don't handle", packet.pid);

  next:
    mpegts_packetizer_clear_packet (base->packetizer, &packet);
  }

  if (klass->input_done) {
    if (res == GST_FLOW_OK)
      res = klass->input_done (base, buf);
    else
      gst_buffer_unref (buf);
  }

  return res;
}