1 /* GStreamer
2  * Copyright (C) <2016> Stian Selnes <stian@pexip.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 __GST_RTP_META_H__
21 #define __GST_RTP_META_H__
22 
23 #include <gst/gst.h>
24 #include <gst/rtp/rtp-prelude.h>
25 
26 G_BEGIN_DECLS
27 
28 #define GST_RTP_SOURCE_META_API_TYPE  (gst_rtp_source_meta_api_get_type())
29 #define GST_RTP_SOURCE_META_INFO  (gst_rtp_source_meta_get_info())
30 typedef struct _GstRTPSourceMeta GstRTPSourceMeta;
31 
32 #define GST_RTP_SOURCE_META_MAX_CSRC_COUNT 15
33 
34 /**
35  * GstRTPSourceMeta:
36  * @meta: parent #GstMeta
37  * @ssrc: the SSRC
38  * @ssrc_valid: whether @ssrc is set and valid
39  * @csrc: (allow-none): pointer to the CSRCs
40  * @csrc_count: number of elements in @csrc
41  *
42  * Meta describing the source(s) of the buffer.
43  *
44  * Since: 1.16
45  */
46 struct _GstRTPSourceMeta
47 {
48   GstMeta meta;
49 
50   guint32 ssrc;
51   gboolean ssrc_valid;
52   guint32 csrc[GST_RTP_SOURCE_META_MAX_CSRC_COUNT];
53   guint csrc_count;
54 };
55 
56 GST_RTP_API
57 GType               gst_rtp_source_meta_api_get_type     (void);
58 
59 GST_RTP_API
60 GstRTPSourceMeta *  gst_buffer_add_rtp_source_meta       (GstBuffer * buffer, const guint32 * ssrc,
61                                                           const guint32 * csrc, guint csrc_count);
62 GST_RTP_API
63 GstRTPSourceMeta *  gst_buffer_get_rtp_source_meta       (GstBuffer * buffer);
64 
65 GST_RTP_API
66 guint               gst_rtp_source_meta_get_source_count (const GstRTPSourceMeta * meta);
67 
68 GST_RTP_API
69 gboolean            gst_rtp_source_meta_set_ssrc         (GstRTPSourceMeta * meta, guint32 * ssrc);
70 
71 GST_RTP_API
72 gboolean            gst_rtp_source_meta_append_csrc      (GstRTPSourceMeta * meta,
73                                                           const guint32 * csrc, guint csrc_count);
74 GST_RTP_API
75 const GstMetaInfo * gst_rtp_source_meta_get_info         (void);
76 
77 G_END_DECLS
78 
79 #endif /* __GST_RTP_META_H__ */
80