2 * Copyright (C) <2006> Philippe Khalaf <burger@speedy.org>
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., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
26 #include <gst/rtp/gstrtpbuffer.h>
27 #include "gstrtpilbcdepay.h"
29 /* RtpiLBCDepay signals and args */
36 #define DEFAULT_MODE GST_ILBC_MODE_30
44 /* FIXME, mode should be string because it is a parameter in SDP fmtp */
45 static GstStaticPadTemplate gst_rtp_ilbc_depay_sink_template =
46 GST_STATIC_PAD_TEMPLATE ("sink",
49 GST_STATIC_CAPS ("application/x-rtp, "
50 "media = (string) \"audio\", "
51 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
52 "clock-rate = (int) 8000, "
53 "encoding-name = (string) \"ILBC\", "
54 "mode = (string) { \"20\", \"30\" }")
57 static GstStaticPadTemplate gst_rtp_ilbc_depay_src_template =
58 GST_STATIC_PAD_TEMPLATE ("src",
61 GST_STATIC_CAPS ("audio/x-iLBC, " "mode = (int) { 20, 30 }")
64 static void gst_ilbc_depay_set_property (GObject * object,
65 guint prop_id, const GValue * value, GParamSpec * pspec);
66 static void gst_ilbc_depay_get_property (GObject * object,
67 guint prop_id, GValue * value, GParamSpec * pspec);
69 static GstBuffer *gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload,
71 static gboolean gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload,
74 #define gst_rtp_ilbc_depay_parent_class parent_class
75 G_DEFINE_TYPE (GstRTPiLBCDepay, gst_rtp_ilbc_depay,
76 GST_TYPE_BASE_RTP_DEPAYLOAD);
78 #define GST_TYPE_ILBC_MODE (gst_ilbc_mode_get_type())
80 gst_ilbc_mode_get_type (void)
82 static GType ilbc_mode_type = 0;
83 static const GEnumValue ilbc_modes[] = {
84 {GST_ILBC_MODE_20, "20ms frames", "20ms"},
85 {GST_ILBC_MODE_30, "30ms frames", "30ms"},
89 if (!ilbc_mode_type) {
90 ilbc_mode_type = g_enum_register_static ("iLBCMode", ilbc_modes);
92 return ilbc_mode_type;
96 gst_rtp_ilbc_depay_class_init (GstRTPiLBCDepayClass * klass)
98 GObjectClass *gobject_class;
99 GstElementClass *gstelement_class;
100 GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
102 gobject_class = (GObjectClass *) klass;
103 gstelement_class = (GstElementClass *) klass;
104 gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
106 gobject_class->set_property = gst_ilbc_depay_set_property;
107 gobject_class->get_property = gst_ilbc_depay_get_property;
109 /* FIXME, mode is in the caps */
110 g_object_class_install_property (gobject_class, PROP_MODE,
111 g_param_spec_enum ("mode", "Mode", "iLBC frame mode",
112 GST_TYPE_ILBC_MODE, DEFAULT_MODE,
113 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
115 gst_element_class_add_pad_template (gstelement_class,
116 gst_static_pad_template_get (&gst_rtp_ilbc_depay_src_template));
117 gst_element_class_add_pad_template (gstelement_class,
118 gst_static_pad_template_get (&gst_rtp_ilbc_depay_sink_template));
120 gst_element_class_set_details_simple (gstelement_class,
121 "RTP iLBC depayloader", "Codec/Depayloader/Network/RTP",
122 "Extracts iLBC audio from RTP packets (RFC 3952)",
123 "Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
125 gstbasertpdepayload_class->process = gst_rtp_ilbc_depay_process;
126 gstbasertpdepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps;
130 gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay)
132 /* Set default mode */
133 rtpilbcdepay->mode = DEFAULT_MODE;
137 gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
139 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (depayload);
141 GstStructure *structure;
142 const gchar *mode_str = NULL;
143 gint mode, clock_rate;
146 structure = gst_caps_get_structure (caps, 0);
148 mode = rtpilbcdepay->mode;
150 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
152 depayload->clock_rate = clock_rate;
154 /* parse mode, if we can */
155 mode_str = gst_structure_get_string (structure, "mode");
157 mode = strtol (mode_str, NULL, 10);
158 if (mode != 20 && mode != 30)
159 mode = rtpilbcdepay->mode;
162 rtpilbcdepay->mode = mode;
164 srccaps = gst_caps_new_simple ("audio/x-iLBC",
165 "mode", G_TYPE_INT, rtpilbcdepay->mode, NULL);
166 ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
168 GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
169 gst_caps_unref (srccaps);
175 gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
179 GstRTPBuffer rtp = { NULL };
181 gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
183 marker = gst_rtp_buffer_get_marker (&rtp);
185 GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d",
186 gst_buffer_get_size (buf), marker,
187 gst_rtp_buffer_get_timestamp (&rtp), gst_rtp_buffer_get_seq (&rtp));
189 outbuf = gst_rtp_buffer_get_payload_buffer (&rtp);
191 gst_rtp_buffer_unmap (&rtp);
193 if (marker && outbuf) {
194 /* mark start of talkspurt with DISCONT */
195 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
202 gst_ilbc_depay_set_property (GObject * object,
203 guint prop_id, const GValue * value, GParamSpec * pspec)
205 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
209 rtpilbcdepay->mode = g_value_get_enum (value);
212 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
218 gst_ilbc_depay_get_property (GObject * object,
219 guint prop_id, GValue * value, GParamSpec * pspec)
221 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
225 g_value_set_enum (value, rtpilbcdepay->mode);
228 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
234 gst_rtp_ilbc_depay_plugin_init (GstPlugin * plugin)
236 return gst_element_register (plugin, "rtpilbcdepay",
237 GST_RANK_SECONDARY, GST_TYPE_RTP_ILBC_DEPAY);