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., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, 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 "clock-rate = (int) 8000, "
52 "encoding-name = (string) \"ILBC\", "
53 "mode = (string) { \"20\", \"30\" }")
56 static GstStaticPadTemplate gst_rtp_ilbc_depay_src_template =
57 GST_STATIC_PAD_TEMPLATE ("src",
60 GST_STATIC_CAPS ("audio/x-iLBC, " "mode = (int) { 20, 30 }")
63 static void gst_ilbc_depay_set_property (GObject * object,
64 guint prop_id, const GValue * value, GParamSpec * pspec);
65 static void gst_ilbc_depay_get_property (GObject * object,
66 guint prop_id, GValue * value, GParamSpec * pspec);
68 static GstBuffer *gst_rtp_ilbc_depay_process (GstRTPBaseDepayload * depayload,
70 static gboolean gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload,
73 #define gst_rtp_ilbc_depay_parent_class parent_class
74 G_DEFINE_TYPE (GstRTPiLBCDepay, gst_rtp_ilbc_depay,
75 GST_TYPE_RTP_BASE_DEPAYLOAD);
77 #define GST_TYPE_ILBC_MODE (gst_ilbc_mode_get_type())
79 gst_ilbc_mode_get_type (void)
81 static GType ilbc_mode_type = 0;
82 static const GEnumValue ilbc_modes[] = {
83 {GST_ILBC_MODE_20, "20ms frames", "20ms"},
84 {GST_ILBC_MODE_30, "30ms frames", "30ms"},
88 if (!ilbc_mode_type) {
89 ilbc_mode_type = g_enum_register_static ("iLBCMode", ilbc_modes);
91 return ilbc_mode_type;
95 gst_rtp_ilbc_depay_class_init (GstRTPiLBCDepayClass * klass)
97 GObjectClass *gobject_class;
98 GstElementClass *gstelement_class;
99 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
101 gobject_class = (GObjectClass *) klass;
102 gstelement_class = (GstElementClass *) klass;
103 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
105 gobject_class->set_property = gst_ilbc_depay_set_property;
106 gobject_class->get_property = gst_ilbc_depay_get_property;
108 /* FIXME, mode is in the caps */
109 g_object_class_install_property (gobject_class, PROP_MODE,
110 g_param_spec_enum ("mode", "Mode", "iLBC frame mode",
111 GST_TYPE_ILBC_MODE, DEFAULT_MODE,
112 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
114 gst_element_class_add_pad_template (gstelement_class,
115 gst_static_pad_template_get (&gst_rtp_ilbc_depay_src_template));
116 gst_element_class_add_pad_template (gstelement_class,
117 gst_static_pad_template_get (&gst_rtp_ilbc_depay_sink_template));
119 gst_element_class_set_static_metadata (gstelement_class,
120 "RTP iLBC depayloader", "Codec/Depayloader/Network/RTP",
121 "Extracts iLBC audio from RTP packets (RFC 3952)",
122 "Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
124 gstrtpbasedepayload_class->process = gst_rtp_ilbc_depay_process;
125 gstrtpbasedepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps;
129 gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay)
131 /* Set default mode */
132 rtpilbcdepay->mode = DEFAULT_MODE;
136 gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
138 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (depayload);
140 GstStructure *structure;
141 const gchar *mode_str = NULL;
142 gint mode, clock_rate;
145 structure = gst_caps_get_structure (caps, 0);
147 mode = rtpilbcdepay->mode;
149 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
151 depayload->clock_rate = clock_rate;
153 /* parse mode, if we can */
154 mode_str = gst_structure_get_string (structure, "mode");
156 mode = strtol (mode_str, NULL, 10);
157 if (mode != 20 && mode != 30)
158 mode = rtpilbcdepay->mode;
161 rtpilbcdepay->mode = mode;
163 srccaps = gst_caps_new_simple ("audio/x-iLBC",
164 "mode", G_TYPE_INT, rtpilbcdepay->mode, NULL);
165 ret = gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (depayload), srccaps);
167 GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
168 gst_caps_unref (srccaps);
174 gst_rtp_ilbc_depay_process (GstRTPBaseDepayload * depayload, GstBuffer * buf)
178 GstRTPBuffer rtp = { NULL };
180 gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
182 marker = gst_rtp_buffer_get_marker (&rtp);
184 GST_DEBUG ("process : got %" G_GSIZE_FORMAT " bytes, mark %d ts %u seqn %d",
185 gst_buffer_get_size (buf), marker,
186 gst_rtp_buffer_get_timestamp (&rtp), gst_rtp_buffer_get_seq (&rtp));
188 outbuf = gst_rtp_buffer_get_payload_buffer (&rtp);
190 gst_rtp_buffer_unmap (&rtp);
192 if (marker && outbuf) {
193 /* mark start of talkspurt with RESYNC */
194 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_RESYNC);
201 gst_ilbc_depay_set_property (GObject * object,
202 guint prop_id, const GValue * value, GParamSpec * pspec)
204 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
208 rtpilbcdepay->mode = g_value_get_enum (value);
211 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
217 gst_ilbc_depay_get_property (GObject * object,
218 guint prop_id, GValue * value, GParamSpec * pspec)
220 GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
224 g_value_set_enum (value, rtpilbcdepay->mode);
227 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
233 gst_rtp_ilbc_depay_plugin_init (GstPlugin * plugin)
235 return gst_element_register (plugin, "rtpilbcdepay",
236 GST_RANK_SECONDARY, GST_TYPE_RTP_ILBC_DEPAY);