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/* GStreamer
* Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.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 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/rtp/gstrtpbuffer.h>
#include <string.h>
#include "gstrtpmp1sdepay.h"
/* elementfactory information */
static const GstElementDetails gst_rtp_mp1sdepay_details =
GST_ELEMENT_DETAILS ("RTP MPEG1 System Stream depayloader",
"Codec/Depayloader/Network",
"Extracts MPEG1 System Streams from RTP packets (RFC 3555)",
"Wim Taymans <wim.taymans@gmail.com>");
/* RtpMP1SDepay signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_LAST
};
static GstStaticPadTemplate gst_rtp_mp1s_depay_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/mpeg,systemstream=(boolean)true")
);
/* The spec says video/MP1S but I have seen streams with other/MP1S so we will
* allow them both */
static GstStaticPadTemplate gst_rtp_mp1s_depay_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"media = (string) \"other\", "
"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP1S\";"
"application/x-rtp, "
"media = (string) \"video\", "
"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP1S\"")
);
GST_BOILERPLATE (GstRtpMP1SDepay, gst_rtp_mp1s_depay, GstBaseRTPDepayload,
GST_TYPE_BASE_RTP_DEPAYLOAD);
static gboolean gst_rtp_mp1s_depay_setcaps (GstBaseRTPDepayload * depayload,
GstCaps * caps);
static GstBuffer *gst_rtp_mp1s_depay_process (GstBaseRTPDepayload * depayload,
GstBuffer * buf);
static void
gst_rtp_mp1s_depay_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_rtp_mp1s_depay_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_rtp_mp1s_depay_sink_template));
gst_element_class_set_details (element_class, &gst_rtp_mp1sdepay_details);
}
static void
gst_rtp_mp1s_depay_class_init (GstRtpMP1SDepayClass * klass)
{
GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gstbasertpdepayload_class->process = gst_rtp_mp1s_depay_process;
gstbasertpdepayload_class->set_caps = gst_rtp_mp1s_depay_setcaps;
}
static void
gst_rtp_mp1s_depay_init (GstRtpMP1SDepay * rtpmp1sdepay,
GstRtpMP1SDepayClass * klass)
{
}
static gboolean
gst_rtp_mp1s_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
{
GstCaps *srccaps;
GstStructure *structure;
gint clock_rate;
gboolean res;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
clock_rate = 90000; /* default */
depayload->clock_rate = clock_rate;
srccaps = gst_caps_new_simple ("video/mpeg",
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
res = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
gst_caps_unref (srccaps);
return res;
}
static GstBuffer *
gst_rtp_mp1s_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
{
GstBuffer *outbuf;
outbuf = gst_rtp_buffer_get_payload_buffer (buf);
GST_DEBUG ("gst_rtp_mp1s_depay_chain: pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
return outbuf;
}
gboolean
gst_rtp_mp1s_depay_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "rtpmp1sdepay",
GST_RANK_MARGINAL, GST_TYPE_RTP_MP1S_DEPAY);
}
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