gstreamer/gst/rtp/gstasteriskh263.c
Tim-Philipp Müller 59385bde70 ext/cdio/Makefile.am: Add GST_BASE_CFLAGS and GST_BASE_LIBS (seems to be required for Cygwin, see #317048)
Original commit message from CVS:
* ext/cdio/Makefile.am:
Add GST_BASE_CFLAGS and GST_BASE_LIBS (seems to be
required for Cygwin, see #317048)
* gst/rtp/gstasteriskh263.c:
Cygwin has includes for both the unix network socket API
and the windows API, but only one can be included, so fix
includes to only use one or the other, prefering the unxi
one (#317048).
2006-02-23 20:08:58 +00:00

315 lines
8.4 KiB
C

/* GStreamer
* Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
*
* 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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <gst/rtp/gstrtpbuffer.h>
#include "gstasteriskh263.h"
/* Cygwin has both netinet/in.h and winsock2.h, but
* only one can be included, so prefer the unix one */
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#else
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#endif
#define GST_ASTERISKH263_HEADER_LEN 6
typedef struct _GstAsteriskH263Header
{
guint32 timestamp; /* Timestamp */
guint16 length; /* Length */
} GstAsteriskH263Header;
#define GST_ASTERISKH263_HEADER_TIMESTAMP(buf) (((GstAsteriskH263Header *)(GST_BUFFER_DATA (buf)))->timestamp)
#define GST_ASTERISKH263_HEADER_LENGTH(buf) (((GstAsteriskH263Header *)(GST_BUFFER_DATA (buf)))->length)
/* elementfactory information */
static GstElementDetails gst_rtp_h263p_depaydetails = {
"RTP packet parser",
"Codec/Depayr/Network",
"Extracts H263 video from RTP and encodes in Asterisk H263 format",
"Neil Stratford <neils@vipadia.com>"
};
/* Asteriskh263 signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_FREQUENCY
};
static GstStaticPadTemplate gst_asteriskh263_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-asteriskh263")
);
static GstStaticPadTemplate gst_asteriskh263_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"media = (string) \"video\", "
"payload = (int) [ 96, 127 ], "
"clock-rate = (int) 90000, " "encoding-name = (string) \"H263-1998\"")
);
static void gst_asteriskh263_class_init (GstAsteriskh263Class * klass);
static void gst_asteriskh263_base_init (GstAsteriskh263Class * klass);
static void gst_asteriskh263_init (GstAsteriskh263 * asteriskh263);
static void gst_asteriskh263_finalize (GObject * object);
static GstFlowReturn gst_asteriskh263_chain (GstPad * pad, GstBuffer * buffer);
static void gst_asteriskh263_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_asteriskh263_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_asteriskh263_change_state (GstElement *
element, GstStateChange transition);
static GstElementClass *parent_class = NULL;
static GType
gst_asteriskh263_get_type (void)
{
static GType asteriskh263_type = 0;
if (!asteriskh263_type) {
static const GTypeInfo asteriskh263_info = {
sizeof (GstAsteriskh263Class),
(GBaseInitFunc) gst_asteriskh263_base_init,
NULL,
(GClassInitFunc) gst_asteriskh263_class_init,
NULL,
NULL,
sizeof (GstAsteriskh263),
0,
(GInstanceInitFunc) gst_asteriskh263_init,
};
asteriskh263_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstAsteriskh263",
&asteriskh263_info, 0);
}
return asteriskh263_type;
}
static void
gst_asteriskh263_base_init (GstAsteriskh263Class * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_asteriskh263_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_asteriskh263_sink_template));
gst_element_class_set_details (element_class, &gst_rtp_h263p_depaydetails);
}
static void
gst_asteriskh263_class_init (GstAsteriskh263Class * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->finalize = gst_asteriskh263_finalize;
gobject_class->set_property = gst_asteriskh263_set_property;
gobject_class->get_property = gst_asteriskh263_get_property;
gstelement_class->change_state = gst_asteriskh263_change_state;
}
static void
gst_asteriskh263_init (GstAsteriskh263 * asteriskh263)
{
asteriskh263->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_asteriskh263_src_template), "src");
gst_element_add_pad (GST_ELEMENT (asteriskh263), asteriskh263->srcpad);
asteriskh263->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_asteriskh263_sink_template), "sink");
gst_pad_set_chain_function (asteriskh263->sinkpad, gst_asteriskh263_chain);
gst_element_add_pad (GST_ELEMENT (asteriskh263), asteriskh263->sinkpad);
asteriskh263->adapter = gst_adapter_new ();
}
static void
gst_asteriskh263_finalize (GObject * object)
{
GstAsteriskh263 *asteriskh263;
asteriskh263 = GST_ASTERISK_H263 (object);
g_object_unref (asteriskh263->adapter);
asteriskh263->adapter = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstFlowReturn
gst_asteriskh263_chain (GstPad * pad, GstBuffer * buf)
{
GstAsteriskh263 *asteriskh263;
GstBuffer *outbuf;
GstFlowReturn ret;
asteriskh263 = GST_ASTERISK_H263 (GST_OBJECT_PARENT (pad));
if (!gst_rtp_buffer_validate (buf))
goto bad_packet;
{
gint payload_len;
guint8 *payload;
gboolean M;
guint32 timestamp;
guint32 samples;
guint16 asterisk_len;
payload_len = gst_rtp_buffer_get_payload_len (buf);
payload = gst_rtp_buffer_get_payload (buf);
M = gst_rtp_buffer_get_marker (buf);
timestamp = gst_rtp_buffer_get_timestamp (buf);
outbuf = gst_buffer_new_and_alloc (payload_len +
GST_ASTERISKH263_HEADER_LEN);
/* build the asterisk header */
asterisk_len = payload_len;
if (M)
asterisk_len |= 0x8000;
if (!asteriskh263->lastts)
asteriskh263->lastts = timestamp;
samples = timestamp - asteriskh263->lastts;
asteriskh263->lastts = timestamp;
GST_ASTERISKH263_HEADER_TIMESTAMP (outbuf) = htonl (samples);
GST_ASTERISKH263_HEADER_LENGTH (outbuf) = htons (asterisk_len);
/* copy the data into place */
memcpy (GST_BUFFER_DATA (outbuf) + GST_ASTERISKH263_HEADER_LEN, payload,
payload_len);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
gst_buffer_set_caps (outbuf,
(GstCaps *) gst_pad_get_pad_template_caps (asteriskh263->srcpad));
ret = gst_pad_push (asteriskh263->srcpad, outbuf);
gst_buffer_unref (buf);
}
return ret;
bad_packet:
{
GST_DEBUG ("Packet does not validate");
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
}
static void
gst_asteriskh263_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAsteriskh263 *asteriskh263;
asteriskh263 = GST_ASTERISK_H263 (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_asteriskh263_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAsteriskh263 *asteriskh263;
asteriskh263 = GST_ASTERISK_H263 (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_asteriskh263_change_state (GstElement * element, GstStateChange transition)
{
GstAsteriskh263 *asteriskh263;
GstStateChangeReturn ret;
asteriskh263 = GST_ASTERISK_H263 (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_adapter_clear (asteriskh263->adapter);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
gboolean
gst_asteriskh263_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "asteriskh263",
GST_RANK_NONE, GST_TYPE_ASTERISK_H263);
}