C++ (Cpp) gst_rtp_dtmf_prepare_rtp_headers Exemples

Exemple #1

Fichier : gstrtpdtmfsrc.c Projet : DylanZA/gst-plugins-good

static GstBuffer *
gst_rtp_dtmf_src_create_next_rtp_packet (GstRTPDTMFSrc * dtmfsrc)
{
  GstBuffer *buf;
  GstRTPDTMFPayload *payload;
  GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;

  buf = gst_rtp_buffer_new_allocate (sizeof (GstRTPDTMFPayload), 0, 0);

  gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtpbuffer);

  gst_rtp_dtmf_prepare_rtp_headers (dtmfsrc, &rtpbuffer);

  /* timestamp and duration of GstBuffer */
  /* Redundant buffer have no duration ... */
  if (dtmfsrc->redundancy_count > 1)
    GST_BUFFER_DURATION (buf) = 0;
  else
    GST_BUFFER_DURATION (buf) = dtmfsrc->ptime * GST_MSECOND;
  GST_BUFFER_PTS (buf) = dtmfsrc->timestamp;

  payload = (GstRTPDTMFPayload *) gst_rtp_buffer_get_payload (&rtpbuffer);

  /* copy payload and convert to network-byte order */
  memmove (payload, dtmfsrc->payload, sizeof (GstRTPDTMFPayload));

  payload->duration = g_htons (payload->duration);

  if (dtmfsrc->redundancy_count <= 1 && dtmfsrc->last_packet) {
    GstClockTime inter_digit_interval = MIN_INTER_DIGIT_INTERVAL;

    if (inter_digit_interval % dtmfsrc->ptime != 0)
      inter_digit_interval += dtmfsrc->ptime -
          (MIN_INTER_DIGIT_INTERVAL % dtmfsrc->ptime);

    GST_BUFFER_DURATION (buf) += inter_digit_interval * GST_MSECOND;
  }

  GST_LOG_OBJECT (dtmfsrc, "Creating new buffer with event %u duration "
      " gst: %" GST_TIME_FORMAT " at %" GST_TIME_FORMAT "(rtp ts:%u dur:%u)",
      dtmfsrc->payload->event, GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), dtmfsrc->rtp_timestamp,
      dtmfsrc->payload->duration);

  /* duration of DTMF payloadfor the NEXT packet */
  /* not updated for redundant packets */
  if (dtmfsrc->redundancy_count <= 1)
    dtmfsrc->payload->duration += dtmfsrc->ptime * dtmfsrc->clock_rate / 1000;

  if (GST_CLOCK_TIME_IS_VALID (dtmfsrc->timestamp))
    dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);

  gst_rtp_buffer_unmap (&rtpbuffer);

  return buf;
}

Exemple #2

Fichier : gstrtpdtmfsrc.c Projet : bilboed/gst-plugins-bad

static void
gst_rtp_dtmf_prepare_buffer_data (GstRTPDTMFSrc * dtmfsrc, GstBuffer * buf)
{
  GstRTPDTMFPayload *payload;

  gst_rtp_dtmf_prepare_rtp_headers (dtmfsrc, buf);

  /* timestamp and duration of GstBuffer */
  /* Redundant buffer have no duration ... */
  if (dtmfsrc->redundancy_count > 1)
    GST_BUFFER_DURATION (buf) = 0;
  else
    GST_BUFFER_DURATION (buf) = dtmfsrc->interval * GST_MSECOND;
  GST_BUFFER_TIMESTAMP (buf) = dtmfsrc->timestamp;

  dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);

  payload = (GstRTPDTMFPayload *) gst_rtp_buffer_get_payload (buf);

  /* copy payload and convert to network-byte order */
  g_memmove (payload, dtmfsrc->payload, sizeof (GstRTPDTMFPayload));
  /* Force the packet duration to a certain minumum
   * if its the end of the event
   */
  if (payload->e &&
      payload->duration < MIN_PULSE_DURATION * dtmfsrc->clock_rate / 1000)
    payload->duration = MIN_PULSE_DURATION * dtmfsrc->clock_rate / 1000;

  payload->duration = g_htons (payload->duration);


  /* duration of DTMF payloadfor the NEXT packet */
  /* not updated for redundant packets */
  if (dtmfsrc->redundancy_count == 0)
    dtmfsrc->payload->duration +=
        dtmfsrc->interval * dtmfsrc->clock_rate / 1000;

}