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/* GStreamer
* Copyright (C) <2006> Philippe Khalaf <burger@speedy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <gst/audio/audio.h>
#include "gstrtpelements.h"
#include "gstrtpilbcdepay.h"
#include "gstrtputils.h"
/* RtpiLBCDepay signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_MODE GST_ILBC_MODE_30
enum
{
PROP_0,
PROP_MODE
};
/* FIXME, mode should be string because it is a parameter in SDP fmtp */
static GstStaticPadTemplate gst_rtp_ilbc_depay_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"media = (string) \"audio\", "
"clock-rate = (int) 8000, " "encoding-name = (string) \"ILBC\"")
/* "mode = (string) { \"20\", \"30\" }" */
);
static GstStaticPadTemplate gst_rtp_ilbc_depay_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-iLBC, " "mode = (int) { 20, 30 }")
);
static void gst_ilbc_depay_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_ilbc_depay_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstBuffer *gst_rtp_ilbc_depay_process (GstRTPBaseDepayload * depayload,
GstRTPBuffer * rtp);
static gboolean gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload,
GstCaps * caps);
#define gst_rtp_ilbc_depay_parent_class parent_class
G_DEFINE_TYPE (GstRTPiLBCDepay, gst_rtp_ilbc_depay,
GST_TYPE_RTP_BASE_DEPAYLOAD);
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (rtpilbcdepay, "rtpilbcdepay",
GST_RANK_SECONDARY, GST_TYPE_RTP_ILBC_DEPAY, rtp_element_init (plugin));
#define GST_TYPE_ILBC_MODE (gst_ilbc_mode_get_type())
static GType
gst_ilbc_mode_get_type (void)
{
static GType ilbc_mode_type = 0;
static const GEnumValue ilbc_modes[] = {
{GST_ILBC_MODE_20, "20ms frames", "20ms"},
{GST_ILBC_MODE_30, "30ms frames", "30ms"},
{0, NULL, NULL},
};
if (!ilbc_mode_type) {
ilbc_mode_type = g_enum_register_static ("iLBCMode", ilbc_modes);
}
return ilbc_mode_type;
}
static void
gst_rtp_ilbc_depay_class_init (GstRTPiLBCDepayClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
gobject_class->set_property = gst_ilbc_depay_set_property;
gobject_class->get_property = gst_ilbc_depay_get_property;
/* FIXME, mode is in the caps */
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Mode", "iLBC frame mode",
GST_TYPE_ILBC_MODE, DEFAULT_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (gstelement_class,
&gst_rtp_ilbc_depay_src_template);
gst_element_class_add_static_pad_template (gstelement_class,
&gst_rtp_ilbc_depay_sink_template);
gst_element_class_set_static_metadata (gstelement_class,
"RTP iLBC depayloader", "Codec/Depayloader/Network/RTP",
"Extracts iLBC audio from RTP packets (RFC 3952)",
"Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_ilbc_depay_process;
gstrtpbasedepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps;
gst_type_mark_as_plugin_api (GST_TYPE_ILBC_MODE, 0);
}
static void
gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay)
{
/* Set default mode */
rtpilbcdepay->mode = DEFAULT_MODE;
}
static gboolean
gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
{
GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (depayload);
GstCaps *srccaps;
GstStructure *structure;
const gchar *mode_str = NULL;
gint mode, clock_rate;
gboolean ret;
structure = gst_caps_get_structure (caps, 0);
mode = rtpilbcdepay->mode;
if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
clock_rate = 8000;
depayload->clock_rate = clock_rate;
/* parse mode, if we can */
mode_str = gst_structure_get_string (structure, "mode");
if (mode_str) {
mode = strtol (mode_str, NULL, 10);
if (mode != 20 && mode != 30)
mode = rtpilbcdepay->mode;
}
rtpilbcdepay->mode = mode;
srccaps = gst_caps_new_simple ("audio/x-iLBC",
"mode", G_TYPE_INT, rtpilbcdepay->mode, NULL);
ret = gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (depayload), srccaps);
GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
gst_caps_unref (srccaps);
return ret;
}
static GstBuffer *
gst_rtp_ilbc_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
{
GstBuffer *outbuf;
gboolean marker;
marker = gst_rtp_buffer_get_marker (rtp);
GST_DEBUG ("process : got %" G_GSIZE_FORMAT " bytes, mark %d ts %u seqn %d",
gst_buffer_get_size (rtp->buffer), marker,
gst_rtp_buffer_get_timestamp (rtp), gst_rtp_buffer_get_seq (rtp));
outbuf = gst_rtp_buffer_get_payload_buffer (rtp);
if (marker && outbuf) {
/* mark start of talkspurt with RESYNC */
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_RESYNC);
}
if (outbuf) {
gst_rtp_drop_non_audio_meta (depayload, outbuf);
}
return outbuf;
}
static void
gst_ilbc_depay_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
switch (prop_id) {
case PROP_MODE:
rtpilbcdepay->mode = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ilbc_depay_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, rtpilbcdepay->mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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