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
21 #include <gst/rtp/gstrtpbuffer.h>
22 #include "gstrtpgsmdepay.h"
24 /* elementfactory information */
25 static GstElementDetails gst_rtp_gsmdepay_details = {
27 "Codec/Depayr/Network",
28 "Extracts GSM audio from RTP packets",
29 "Zeeshan Ali <zeenix@gmail.com>"
32 /* RTPGSMDepay signals and args */
39 static GstStaticPadTemplate gst_rtp_gsm_depay_src_template =
40 GST_STATIC_PAD_TEMPLATE ("src",
43 GST_STATIC_CAPS ("audio/x-gsm, " "rate = (int) 8000, " "channels = 1")
46 static GstStaticPadTemplate gst_rtp_gsm_depay_sink_template =
47 GST_STATIC_PAD_TEMPLATE ("sink",
50 GST_STATIC_CAPS ("application/x-rtp, "
51 "media = (string) \"audio\", "
52 "clock-rate = (int) 8000, " "encoding-name = (string) \"GSM\"")
55 static GstBuffer *gst_rtp_gsm_depay_process (GstBaseRTPDepayload * _depayload,
57 static gboolean gst_rtp_gsm_depay_setcaps (GstBaseRTPDepayload * _depayload,
60 GST_BOILERPLATE (GstRTPGSMDepay, gst_rtp_gsm_depay, GstBaseRTPDepayload,
61 GST_TYPE_BASE_RTP_DEPAYLOAD);
64 gst_rtp_gsm_depay_base_init (gpointer klass)
66 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
68 gst_element_class_add_pad_template (element_class,
69 gst_static_pad_template_get (&gst_rtp_gsm_depay_src_template));
70 gst_element_class_add_pad_template (element_class,
71 gst_static_pad_template_get (&gst_rtp_gsm_depay_sink_template));
72 gst_element_class_set_details (element_class, &gst_rtp_gsmdepay_details);
76 gst_rtp_gsm_depay_class_init (GstRTPGSMDepayClass * klass)
78 GObjectClass *gobject_class;
79 GstElementClass *gstelement_class;
80 GstBaseRTPDepayloadClass *gstbasertp_depayload_class;
82 gobject_class = (GObjectClass *) klass;
83 gstelement_class = (GstElementClass *) klass;
84 gstbasertp_depayload_class = (GstBaseRTPDepayloadClass *) klass;
86 parent_class = g_type_class_ref (GST_TYPE_BASE_RTP_DEPAYLOAD);
88 gstbasertp_depayload_class->process = gst_rtp_gsm_depay_process;
89 gstbasertp_depayload_class->set_caps = gst_rtp_gsm_depay_setcaps;
93 gst_rtp_gsm_depay_init (GstRTPGSMDepay * rtpgsmdepay,
94 GstRTPGSMDepayClass * klass)
96 GST_BASE_RTP_DEPAYLOAD (rtpgsmdepay)->clock_rate = 8000;
100 gst_rtp_gsm_depay_setcaps (GstBaseRTPDepayload * _depayload, GstCaps * caps)
105 srccaps = gst_static_pad_template_get_caps (&gst_rtp_gsm_depay_src_template);
106 ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (_depayload), srccaps);
108 gst_caps_unref (srccaps);
113 gst_rtp_gsm_depay_process (GstBaseRTPDepayload * _depayload, GstBuffer * buf)
115 GstBuffer *outbuf = NULL;
119 GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d",
120 GST_BUFFER_SIZE (buf),
121 gst_rtp_buffer_get_marker (buf),
122 gst_rtp_buffer_get_timestamp (buf), gst_rtp_buffer_get_seq (buf));
124 payload_len = gst_rtp_buffer_get_payload_len (buf);
125 payload = gst_rtp_buffer_get_payload (buf);
127 outbuf = gst_buffer_new_and_alloc (payload_len);
128 memcpy (GST_BUFFER_DATA (outbuf), payload, payload_len);
133 gst_rtp_gsm_depay_plugin_init (GstPlugin * plugin)
135 return gst_element_register (plugin, "rtpgsmdepay",
136 GST_RANK_NONE, GST_TYPE_RTP_GSM_DEPAY);