2 * Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
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.
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.
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.
24 get_info_from_tags (GstPad * pad, GstEvent ** event, gpointer user_data)
26 GstSDPMedia *media = (GstSDPMedia *) user_data;
28 if (GST_EVENT_TYPE (*event) == GST_EVENT_TAG) {
32 gst_event_parse_tag (*event, &tags);
34 if (gst_tag_list_get_scope (tags) != GST_TAG_SCOPE_STREAM)
37 if (!gst_tag_list_get_uint (tags, GST_TAG_MAXIMUM_BITRATE,
38 &bitrate) || bitrate == 0)
39 if (!gst_tag_list_get_uint (tags, GST_TAG_BITRATE, &bitrate) ||
43 /* set bandwidth (kbits/s) */
44 gst_sdp_media_add_bandwidth (media, GST_SDP_BWTYPE_AS, bitrate / 1000);
54 update_sdp_from_tags (GstRTSPStream * stream, GstSDPMedia * stream_media)
58 src_pad = gst_rtsp_stream_get_srcpad (stream);
60 gst_pad_sticky_events_foreach (src_pad, get_info_from_tags, stream_media);
62 gst_object_unref (src_pad);
66 * gst_rtsp_sdp_from_media:
67 * @sdp: a #GstSDPMessage
69 * @media: a #GstRTSPMedia
71 * Add @media specific info to @sdp. @info is used to configure the connection
72 * information in the SDP.
74 * Returns: TRUE on success.
77 gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
83 n_streams = gst_rtsp_media_n_streams (media);
85 rangestr = gst_rtsp_media_get_range_string (media, FALSE, GST_RTSP_RANGE_NPT);
89 gst_sdp_message_add_attribute (sdp, "range", rangestr);
92 for (i = 0; i < n_streams; i++) {
93 GstRTSPStream *stream;
96 const gchar *caps_str, *caps_enc, *caps_params;
98 gint caps_pt, caps_rate;
104 gint num = 0, denom = 1;
106 stream = gst_rtsp_media_get_stream (media, i);
107 caps = gst_rtsp_stream_get_caps (stream);
110 g_warning ("ignoring stream %d without media type", i);
114 s = gst_caps_get_structure (caps, 0);
116 gst_caps_unref (caps);
117 g_warning ("ignoring stream %d without media type", i);
121 gst_sdp_media_new (&smedia);
123 /* get media type and payload for the m= line */
124 caps_str = gst_structure_get_string (s, "media");
125 gst_sdp_media_set_media (smedia, caps_str);
127 gst_structure_get_int (s, "payload", &caps_pt);
128 tmp = g_strdup_printf ("%d", caps_pt);
129 gst_sdp_media_add_format (smedia, tmp);
132 gst_sdp_media_set_port_info (smedia, 0, 1);
133 gst_sdp_media_set_proto (smedia, "RTP/AVP");
135 /* for the c= line */
136 gst_sdp_media_add_connection (smedia, "IN", info->server_proto,
137 info->server_ip, 16, 0);
139 /* get clock-rate, media type and params for the rtpmap attribute */
140 gst_structure_get_int (s, "clock-rate", &caps_rate);
141 caps_enc = gst_structure_get_string (s, "encoding-name");
142 caps_params = gst_structure_get_string (s, "encoding-params");
146 tmp = g_strdup_printf ("%d %s/%d/%s", caps_pt, caps_enc, caps_rate,
149 tmp = g_strdup_printf ("%d %s/%d", caps_pt, caps_enc, caps_rate);
151 gst_sdp_media_add_attribute (smedia, "rtpmap", tmp);
155 /* create framesize SDP attribute */
156 if (gst_structure_get_int (s, "width", &width) && width > 0 &&
157 gst_structure_get_int (s, "height", &height) && height > 0) {
158 tmp = g_strdup_printf ("%d %d-%d", caps_pt, width, height);
159 gst_sdp_media_add_attribute (smedia, "framesize", tmp);
162 tmp = g_strdup_printf (" %d,%d", width, height);
163 gst_sdp_media_add_attribute (smedia, "x-dimensions", tmp);
167 /* create framerate SDP attribute if frame is not zero */
168 if (gst_structure_get_fraction (s, "framerate", &num, &denom) && num > 0) {
170 gchar framerate [G_ASCII_DTOSTR_BUF_SIZE];
172 gst_util_fraction_to_double (num, denom, &rate);
173 g_ascii_formatd (framerate, sizeof (framerate), " %.17g", rate);
174 gst_sdp_media_add_attribute (smedia, "framerate", framerate);
178 tmp = g_strdup_printf ("stream=%d", i);
179 gst_sdp_media_add_attribute (smedia, "control", tmp);
182 /* collect all other properties and add them to fmtp or attributes */
183 fmtp = g_string_new ("");
184 g_string_append_printf (fmtp, "%d ", caps_pt);
186 n_fields = gst_structure_n_fields (s);
187 for (j = 0; j < n_fields; j++) {
188 const gchar *fname, *fval;
190 fname = gst_structure_nth_field_name (s, j);
192 /* filter out standard properties */
193 if (!strcmp (fname, "media"))
195 if (!strcmp (fname, "payload"))
197 if (!strcmp (fname, "clock-rate"))
199 if (!strcmp (fname, "encoding-name"))
201 if (!strcmp (fname, "encoding-params"))
203 if (!strcmp (fname, "ssrc"))
205 if (!strcmp (fname, "clock-base"))
207 if (!strcmp (fname, "seqnum-base"))
209 if (!strcmp (fname, "width"))
211 if (!strcmp (fname, "height"))
213 if (!strcmp (fname, "framerate"))
216 if (g_str_has_prefix (fname, "a-")) {
218 if ((fval = gst_structure_get_string (s, fname)))
219 gst_sdp_media_add_attribute (smedia, fname + 2, fval);
222 if (g_str_has_prefix (fname, "x-")) {
224 if ((fval = gst_structure_get_string (s, fname)))
225 gst_sdp_media_add_attribute (smedia, fname, fval);
229 if ((fval = gst_structure_get_string (s, fname))) {
230 g_string_append_printf (fmtp, "%s%s=%s", first ? "" : ";", fname, fval);
235 tmp = g_string_free (fmtp, FALSE);
236 gst_sdp_media_add_attribute (smedia, "fmtp", tmp);
239 g_string_free (fmtp, TRUE);
242 update_sdp_from_tags (stream, smedia);
244 gst_sdp_message_add_media (sdp, smedia);
245 gst_sdp_media_free (smedia);
246 gst_caps_unref (caps);
250 GstNetTimeProvider *provider;
253 gst_rtsp_media_get_time_provider (media, info->server_ip, 0))) {
255 gchar *address, *str;
258 g_object_get (provider, "clock", &clock, "address", &address, "port",
261 str = g_strdup_printf ("GstNetTimeProvider %s %s:%d %" G_GUINT64_FORMAT,
262 g_type_name (G_TYPE_FROM_INSTANCE (clock)), address, port,
263 gst_clock_get_time (clock));
265 gst_sdp_message_add_attribute (sdp, "x-gst-clock", str);
267 gst_object_unref (clock);
269 gst_object_unref (provider);
278 GST_ERROR ("media %p is not prepared", media);