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 <gst/audio/audio.h>
28 #include "gstrtpilbcdepay.h"
29 #include "gstrtputils.h"
31 /* RtpiLBCDepay signals and args */
38 #define DEFAULT_MODE GST_ILBC_MODE_30
46 /* FIXME, mode should be string because it is a parameter in SDP fmtp */
47 static GstStaticPadTemplate gst_rtp_ilbc_depay_sink_template =
48 GST_STATIC_PAD_TEMPLATE ("sink",
51 GST_STATIC_CAPS ("application/x-rtp, "
52 "media = (string) \"audio\", "
53 "clock-rate = (int) 8000, " "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 (GstRTPBaseDepayload * depayload,
71 static gboolean gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload,
74 #define gst_rtp_ilbc_depay_parent_class parent_class
75 G_DEFINE_TYPE (GstRTPiLBCDepay, gst_rtp_ilbc_depay,
76 GST_TYPE_RTP_BASE_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 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
102 gobject_class = (GObjectClass *) klass;
103 gstelement_class = (GstElementClass *) klass;
104 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) 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_static_pad_template (gstelement_class,
116 &gst_rtp_ilbc_depay_src_template);
117 gst_element_class_add_static_pad_template (gstelement_class,
118 &gst_rtp_ilbc_depay_sink_template);
120 gst_element_class_set_static_metadata (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 gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_ilbc_depay_process;
126 gstrtpbasedepayload_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 (GstRTPBaseDepayload * 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_RTP_BASE_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 (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
180 marker = gst_rtp_buffer_get_marker (rtp);
182 GST_DEBUG ("process : got %" G_GSIZE_FORMAT " bytes, mark %d ts %u seqn %d",
183 gst_buffer_get_size (rtp->buffer), marker,
184 gst_rtp_buffer_get_timestamp (rtp), gst_rtp_buffer_get_seq (rtp));
186 outbuf = gst_rtp_buffer_get_payload_buffer (rtp);
188 if (marker && outbuf) {
189 /* mark start of talkspurt with RESYNC */
190 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_RESYNC);
194 gst_rtp_drop_non_audio_meta (depayload, outbuf);
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);