gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/webrtc/rtcsessiondescription.c

/* GStreamer
 * Copyright (C) 2017 Matthew Waters <matthew@centricular.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

/**
 * SECTION:gstwebrtc-sessiondescription
 * @short_description: RTCSessionDescription object
 * @title: GstWebRTCSessionDescription
 *
 * <https://www.w3.org/TR/webrtc/#rtcsessiondescription-class>
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "rtcsessiondescription.h"

#define GST_CAT_DEFAULT gst_webrtc_peerconnection_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);

/**
 * gst_webrtc_sdp_type_to_string:
 * @type: a #GstWebRTCSDPType
 *
 * Returns: the string representation of @type or "unknown" when @type is not
 *      recognized.
 */
const gchar *
gst_webrtc_sdp_type_to_string (GstWebRTCSDPType type)
{
  switch (type) {
    case GST_WEBRTC_SDP_TYPE_OFFER:
      return "offer";
    case GST_WEBRTC_SDP_TYPE_PRANSWER:
      return "pranswer";
    case GST_WEBRTC_SDP_TYPE_ANSWER:
      return "answer";
    case GST_WEBRTC_SDP_TYPE_ROLLBACK:
      return "rollback";
    default:
      return "unknown";
  }
}

/**
 * gst_webrtc_session_description_copy:
 * @src: (transfer none): a #GstWebRTCSessionDescription
 *
 * Returns: (transfer full): a new copy of @src
 */
GstWebRTCSessionDescription *
gst_webrtc_session_description_copy (const GstWebRTCSessionDescription * src)
{
  GstWebRTCSessionDescription *ret;

  if (!src)
    return NULL;

  ret = g_new0 (GstWebRTCSessionDescription, 1);

  ret->type = src->type;
  if (src->sdp != NULL) {
    gst_sdp_message_copy (src->sdp, &ret->sdp);
  }

  return ret;
}

/**
 * gst_webrtc_session_description_free:
 * @desc: (transfer full): a #GstWebRTCSessionDescription
 *
 * Free @desc and all associated resources
 */
void
gst_webrtc_session_description_free (GstWebRTCSessionDescription * desc)
{
  g_return_if_fail (desc != NULL);

  if (desc->sdp != NULL) {
    gst_sdp_message_free (desc->sdp);
  }
  g_free (desc);
}

/**
 * gst_webrtc_session_description_new:
 * @type: a #GstWebRTCSDPType
 * @sdp: (transfer full): a #GstSDPMessage
 *
 * Returns: (transfer full): a new #GstWebRTCSessionDescription from @type
 *      and @sdp
 */
GstWebRTCSessionDescription *
gst_webrtc_session_description_new (GstWebRTCSDPType type, GstSDPMessage * sdp)
{
  GstWebRTCSessionDescription *ret;

  ret = g_new0 (GstWebRTCSessionDescription, 1);

  ret->type = type;
  ret->sdp = sdp;

  return ret;
}

G_DEFINE_BOXED_TYPE_WITH_CODE (GstWebRTCSessionDescription,
    gst_webrtc_session_description, gst_webrtc_session_description_copy,
    gst_webrtc_session_description_free,
    GST_DEBUG_CATEGORY_INIT (gst_webrtc_peerconnection_debug,
        "webrtcsessiondescription", 0, "webrtcsessiondescription"));