1 /* GStreamer
2  * Copyright (C) 2017 Matthew Waters <matthew@centricular.com>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __WEBRTC_UTILS_H__
21 #define __WEBRTC_UTILS_H__
22 
23 #include <gst/gst.h>
24 #include <gst/webrtc/webrtc.h>
25 #include "fwd.h"
26 
27 G_BEGIN_DECLS
28 
29 #define GST_WEBRTC_BIN_ERROR gst_webrtc_bin_error_quark ()
30 GQuark gst_webrtc_bin_error_quark (void);
31 
32 typedef enum
33 {
34   GST_WEBRTC_BIN_ERROR_FAILED,
35   GST_WEBRTC_BIN_ERROR_INVALID_SYNTAX,
36   GST_WEBRTC_BIN_ERROR_INVALID_MODIFICATION,
37   GST_WEBRTC_BIN_ERROR_INVALID_STATE,
38   GST_WEBRTC_BIN_ERROR_BAD_SDP,
39   GST_WEBRTC_BIN_ERROR_FINGERPRINT,
40   GST_WEBRTC_BIN_ERROR_SCTP_FAILURE,
41   GST_WEBRTC_BIN_ERROR_DATA_CHANNEL_FAILURE,
42 } GstWebRTCError;
43 
44 GstPadTemplate *        _find_pad_template          (GstElement * element,
45                                                      GstPadDirection direction,
46                                                      GstPadPresence presence,
47                                                      const gchar * name);
48 
49 GstSDPMessage *         _get_latest_sdp             (GstWebRTCBin * webrtc);
50 
51 GstWebRTCICEStream *    _find_ice_stream_for_session            (GstWebRTCBin * webrtc,
52                                                                  guint session_id);
53 void                    _add_ice_stream_item                    (GstWebRTCBin * webrtc,
54                                                                  guint session_id,
55                                                                  GstWebRTCICEStream * stream);
56 
57 struct pad_block
58 {
59   GstElement *element;
60   GstPad *pad;
61   gulong block_id;
62   gpointer user_data;
63   GDestroyNotify notify;
64 };
65 
66 void                    _free_pad_block             (struct pad_block *block);
67 struct pad_block *      _create_pad_block           (GstElement * element,
68                                                      GstPad * pad,
69                                                      gulong block_id,
70                                                      gpointer user_data,
71                                                      GDestroyNotify notify);
72 
73 G_GNUC_INTERNAL
74 gchar *                 _enum_value_to_string       (GType type, guint value);
75 G_GNUC_INTERNAL
76 const gchar *           _g_checksum_to_webrtc_string (GChecksumType type);
77 
78 G_END_DECLS
79 
80 #endif /* __WEBRTC_UTILS_H__ */
81