2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2005> Zeeshan Ali <zeenix@gmail.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
26 #include <gst/rtp/gstrtpbuffer.h>
27 #include "gstrtpgsmdepay.h"
29 GST_DEBUG_CATEGORY_STATIC (rtpgsmdepay_debug);
30 #define GST_CAT_DEFAULT (rtpgsmdepay_debug)
32 /* elementfactory information */
33 static GstElementDetails gst_rtp_gsmdepay_details = {
34 "RTP packet depayloader",
35 "Codec/Depayloader/Network",
36 "Extracts GSM audio from RTP packets",
37 "Zeeshan Ali <zeenix@gmail.com>"
40 /* RTPGSMDepay signals and args */
47 static GstStaticPadTemplate gst_rtp_gsm_depay_src_template =
48 GST_STATIC_PAD_TEMPLATE ("src",
51 GST_STATIC_CAPS ("audio/x-gsm, " "rate = (int) 8000, " "channels = 1")
54 static GstStaticPadTemplate gst_rtp_gsm_depay_sink_template =
55 GST_STATIC_PAD_TEMPLATE ("sink",
58 GST_STATIC_CAPS ("application/x-rtp, "
59 "media = (string) \"audio\", "
60 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
61 "clock-rate = (int) 8000, " "encoding-name = (string) \"GSM\";"
63 "media = (string) \"audio\", "
64 "payload = (int) " GST_RTP_PAYLOAD_GSM_STRING ", "
65 "clock-rate = (int) 8000")
68 static GstBuffer *gst_rtp_gsm_depay_process (GstBaseRTPDepayload * _depayload,
70 static gboolean gst_rtp_gsm_depay_setcaps (GstBaseRTPDepayload * _depayload,
73 GST_BOILERPLATE (GstRTPGSMDepay, gst_rtp_gsm_depay, GstBaseRTPDepayload,
74 GST_TYPE_BASE_RTP_DEPAYLOAD);
77 gst_rtp_gsm_depay_base_init (gpointer klass)
79 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
81 gst_element_class_add_pad_template (element_class,
82 gst_static_pad_template_get (&gst_rtp_gsm_depay_src_template));
83 gst_element_class_add_pad_template (element_class,
84 gst_static_pad_template_get (&gst_rtp_gsm_depay_sink_template));
85 gst_element_class_set_details (element_class, &gst_rtp_gsmdepay_details);
89 gst_rtp_gsm_depay_class_init (GstRTPGSMDepayClass * klass)
91 GObjectClass *gobject_class;
92 GstElementClass *gstelement_class;
93 GstBaseRTPDepayloadClass *gstbasertp_depayload_class;
95 gobject_class = (GObjectClass *) klass;
96 gstelement_class = (GstElementClass *) klass;
97 gstbasertp_depayload_class = (GstBaseRTPDepayloadClass *) klass;
99 parent_class = g_type_class_peek_parent (klass);
101 gstbasertp_depayload_class->process = gst_rtp_gsm_depay_process;
102 gstbasertp_depayload_class->set_caps = gst_rtp_gsm_depay_setcaps;
104 GST_DEBUG_CATEGORY_INIT (rtpgsmdepay_debug, "rtpgsmdepay", 0,
105 "GSM Audio RTP Depayloader");
109 gst_rtp_gsm_depay_init (GstRTPGSMDepay * rtpgsmdepay,
110 GstRTPGSMDepayClass * klass)
115 gst_rtp_gsm_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
119 GstStructure *structure;
120 gint clock_rate = 8000; /* default */
122 structure = gst_caps_get_structure (caps, 0);
124 gst_structure_get_int (structure, "clock-rate", &clock_rate);
125 depayload->clock_rate = clock_rate;
127 srccaps = gst_caps_new_simple ("audio/x-gsm",
128 "channels", G_TYPE_INT, 1, "rate", G_TYPE_INT, clock_rate, NULL);
129 ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
130 gst_caps_unref (srccaps);
136 gst_rtp_gsm_depay_process (GstBaseRTPDepayload * _depayload, GstBuffer * buf)
138 GstBuffer *outbuf = NULL;
140 GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d",
141 GST_BUFFER_SIZE (buf),
142 gst_rtp_buffer_get_marker (buf),
143 gst_rtp_buffer_get_timestamp (buf), gst_rtp_buffer_get_seq (buf));
145 outbuf = gst_rtp_buffer_get_payload_buffer (buf);
151 gst_rtp_gsm_depay_plugin_init (GstPlugin * plugin)
153 return gst_element_register (plugin, "rtpgsmdepay",
154 GST_RANK_MARGINAL, GST_TYPE_RTP_GSM_DEPAY);