示例#1
0
int main (int argc, char **argv)
{
  rtsp_client_t *rtsp_client;
  int ret;
  rtsp_command_t cmd;
  rtsp_decode_t *decode;
  session_desc_t *sdp;
  media_desc_t *media;
  sdp_decode_info_t *sdpdecode;
  rtsp_session_t *session;
  int dummy;

  rtsp_set_error_func(local_error_msg);
  rtsp_set_loglevel(LOG_DEBUG);
  memset(&cmd, 0, sizeof(rtsp_command_t));

  argv++;
  rtsp_client = rtsp_create_client(*argv, &ret, NULL, 0);

  if (rtsp_client == NULL) {
    printf("No client created - error %d\n", ret);
    return (1);
  }

  if (rtsp_send_describe(rtsp_client, &cmd, &decode) != RTSP_RESPONSE_GOOD) {
    printf("Describe response not good\n");
    free_decode_response(decode);
    free_rtsp_client(rtsp_client);
    return(1);
  }

  sdpdecode = set_sdp_decode_from_memory(decode->body);
  if (sdpdecode == NULL) {
    printf("Couldn't get sdp decode\n");
    free_decode_response(decode);
    free_rtsp_client(rtsp_client);
    return(1);
  }

  if (sdp_decode(sdpdecode, &sdp, &dummy) != 0) {
    printf("Couldn't decode sdp\n");
    free_decode_response(decode);
    free_rtsp_client(rtsp_client);
    return (1);
  }
  free(sdpdecode);

  if (decode->content_base == NULL) {
    convert_relative_urls_to_absolute (sdp, *argv);
  } else {
    convert_relative_urls_to_absolute(sdp, decode->content_base);
  }

  free_decode_response(decode);
  decode = NULL;
#if 1
  cmd.transport = "RTP/AVP;unicast;client_port=4588-4589";
#else
  cmd.transport = "RTP/AVP/TCP;interleaved=0-1";
#endif
  media = sdp->media;
  dummy = rtsp_send_setup(rtsp_client,
			  media->control_string,
			  &cmd,
			  &session,
			  &decode, 0);

  if (dummy != RTSP_RESPONSE_GOOD) {
    printf("Response to setup is %d\n", dummy);
    sdp_free_session_desc(sdp);
    free_decode_response(decode);
    free_rtsp_client(rtsp_client);
    return (1);
  }
  free_decode_response(decode);
  cmd.range = "npt=0.0-30.0";
  cmd.transport = NULL;
  if (sdp->control_string != NULL)
    dummy = rtsp_send_aggregate_play(rtsp_client, sdp->control_string, &cmd, &decode);
  else 
    dummy = rtsp_send_play(session, &cmd, &decode);
  if (dummy != RTSP_RESPONSE_GOOD) {
    printf("response to play is %d\n", dummy);
  } else {
    sleep(10);
  }
  free_decode_response(decode);
  cmd.transport = NULL;
  if (sdp->control_string != NULL)
    dummy = rtsp_send_aggregate_teardown(rtsp_client, sdp->control_string, &cmd, &decode);
  else 
    dummy = rtsp_send_teardown(session, NULL, &decode);
  printf("Teardown response %d\n", dummy);
  sdp_free_session_desc(sdp);
  free_decode_response(decode);
  free_rtsp_client(rtsp_client);
  return (0);
}  
/*
 * create_streaming - create a session for streaming.  Create an
 * RTSP session with the server, get the SDP information from it.
 */
int CPlayerSession::create_streaming_ondemand (const char *url, 
					       char *errmsg,
					       uint32_t errlen, 
					       int use_tcp)
{
  rtsp_command_t cmd;
  rtsp_decode_t *decode;
  sdp_decode_info_t *sdpdecode;
  int dummy;
  int err;

  // streaming has seek capability (at least on demand)
  session_set_seekable(1);
  player_debug_message("Creating streaming %s", url);
  memset(&cmd, 0, sizeof(rtsp_command_t));

  /*
   * create RTSP session
   */
  if (use_tcp != 0) {
    m_rtsp_client = rtsp_create_client_for_rtp_tcp(url, &err);
  } else {
    m_rtsp_client = rtsp_create_client(url, &err);
  }
  if (m_rtsp_client == NULL) {
    snprintf(errmsg, errlen, "Failed to create RTSP client");
    player_error_message("Failed to create rtsp client - error %d", err);
    return (err);
  }
  m_rtp_over_rtsp = use_tcp;

  cmd.accept = "application/sdp";

  /*
   * Send the RTSP describe.  This should return SDP information about
   * the session.
   */
  int rtsp_resp;

  rtsp_resp = rtsp_send_describe(m_rtsp_client, &cmd, &decode);
  if (rtsp_resp != RTSP_RESPONSE_GOOD) {
    int retval;
    if (decode != NULL) {
      retval = (((decode->retcode[0] - '0') * 100) +
		((decode->retcode[1] - '0') * 10) +
		(decode->retcode[2] - '0'));
      snprintf(errmsg, errlen, "RTSP describe error %d %s", retval,
	       decode->retresp != NULL ? decode->retresp : "");
      free_decode_response(decode);
    } else {
      retval = -1;
      snprintf(errmsg, errlen, "RTSP return invalid %d", rtsp_resp);
    }
    player_error_message("Describe response not good\n");
    return (retval);
  }

  sdpdecode = set_sdp_decode_from_memory(decode->body);
  if (sdpdecode == NULL) {
    snprintf(errmsg, errlen, "Memory failure");
    player_error_message("Couldn't get sdp decode\n");
    free_decode_response(decode);
    return (-1);
  }

  /*
   * Decode the SDP information into structures we can use.
   */
  err = sdp_decode(sdpdecode, &m_sdp_info, &dummy);
  free(sdpdecode);
  if (err != 0) {
    snprintf(errmsg, errlen, "Couldn't decode session description %s",
	     decode->body);
    player_error_message("Couldn't decode sdp %s", decode->body);
    free_decode_response(decode);
    return (-1);
  }
  if (dummy != 1) {
    snprintf(errmsg, errlen, "Incorrect number of sessions in sdp decode %d",
	     dummy);
    player_error_message("%s", errmsg);
    free_decode_response(decode);
    return (-1);
  }

  /*
   * Make sure we can use the urls in the sdp info
   */
  if (decode->content_location != NULL) {
    // Note - we may have problems if the content location is not absolute.
    m_content_base = strdup(decode->content_location);
  } else if (decode->content_base != NULL) {
    m_content_base = strdup(decode->content_base);
  } else {
    int urllen = strlen(url);
    if (url[urllen] != '/') {
      char *temp;
      temp = (char *)malloc(urllen + 2);
      strcpy(temp, url);
      strcat(temp, "/");
      m_content_base = temp;
    } else {
      m_content_base = strdup(url);
    }
  }

  convert_relative_urls_to_absolute(m_sdp_info,
				    m_content_base);

  if (m_sdp_info->control_string != NULL) {
    player_debug_message("setting control url to %s", m_sdp_info->control_string);
    set_session_control_url(m_sdp_info->control_string);
  }
  free_decode_response(decode);
  m_streaming = 1;
  m_streaming_ondemand = (get_range_from_sdp(m_sdp_info) != NULL);
  return (0);
}