2 * Siren Depayloader Gst Element
4 * @author: Youness Alaoui <kakaroto@kakaroto.homelinux.net>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
28 #include <gst/rtp/gstrtpbuffer.h>
29 #include "gstrtpsirendepay.h"
31 /* elementfactory information */
32 static const GstElementDetails gst_rtp_siren_depay_details =
33 GST_ELEMENT_DETAILS ("RTP Siren packet depayloader",
34 "Codec/Depayloader/Network",
35 "Extracts Siren audio from RTP packets",
36 "Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
39 static GstStaticPadTemplate gst_rtp_siren_depay_sink_template =
40 GST_STATIC_PAD_TEMPLATE ("sink",
43 GST_STATIC_CAPS ("application/x-rtp, "
44 "media = (string) \"audio\", "
45 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
46 "clock-rate = (int) 16000, "
47 "encoding-name = (string) \"SIREN\", " "dct-length = (int) 320")
50 static GstStaticPadTemplate gst_rtp_siren_depay_src_template =
51 GST_STATIC_PAD_TEMPLATE ("src",
54 GST_STATIC_CAPS ("audio/x-siren, " "dct-length = (int) 320")
57 static GstBuffer *gst_rtp_siren_depay_process (GstBaseRTPDepayload * depayload,
59 static gboolean gst_rtp_siren_depay_setcaps (GstBaseRTPDepayload * depayload,
62 GST_BOILERPLATE (GstRTPSirenDepay, gst_rtp_siren_depay, GstBaseRTPDepayload,
63 GST_TYPE_BASE_RTP_DEPAYLOAD);
66 gst_rtp_siren_depay_base_init (gpointer klass)
68 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
70 gst_element_class_add_pad_template (element_class,
71 gst_static_pad_template_get (&gst_rtp_siren_depay_src_template));
72 gst_element_class_add_pad_template (element_class,
73 gst_static_pad_template_get (&gst_rtp_siren_depay_sink_template));
74 gst_element_class_set_details (element_class, &gst_rtp_siren_depay_details);
78 gst_rtp_siren_depay_class_init (GstRTPSirenDepayClass * klass)
80 GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
82 gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
84 gstbasertpdepayload_class->process = gst_rtp_siren_depay_process;
85 gstbasertpdepayload_class->set_caps = gst_rtp_siren_depay_setcaps;
89 gst_rtp_siren_depay_init (GstRTPSirenDepay * rtpsirendepay,
90 GstRTPSirenDepayClass * klass)
96 gst_rtp_siren_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
101 srccaps = gst_caps_new_simple ("audio/x-siren",
102 "dct-length", G_TYPE_INT, 320, NULL);
103 ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
105 GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
106 gst_caps_unref (srccaps);
108 /* always fixed clock rate of 16000 */
109 depayload->clock_rate = 16000;
115 gst_rtp_siren_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
119 outbuf = gst_rtp_buffer_get_payload_buffer (buf);
125 gst_rtp_siren_depay_plugin_init (GstPlugin * plugin)
127 return gst_element_register (plugin, "rtpsirendepay",
128 GST_RANK_MARGINAL, GST_TYPE_RTP_SIREN_DEPAY);