mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-14 05:12:09 +00:00
139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
|
|
#include <string.h>
|
|
#include "gstrtpelements.h"
|
|
#include "gstrtpmp1sdepay.h"
|
|
#include "gstrtputils.h"
|
|
|
|
/* 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\", "
|
|
"clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP1S\";"
|
|
"application/x-rtp, "
|
|
"media = (string) \"video\", "
|
|
"clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP1S\"")
|
|
);
|
|
|
|
G_DEFINE_TYPE (GstRtpMP1SDepay, gst_rtp_mp1s_depay,
|
|
GST_TYPE_RTP_BASE_DEPAYLOAD);
|
|
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (rtpmp1sdepay, "rtpmp1sdepay",
|
|
GST_RANK_SECONDARY, GST_TYPE_RTP_MP1S_DEPAY, rtp_element_init (plugin));
|
|
|
|
static gboolean gst_rtp_mp1s_depay_setcaps (GstRTPBaseDepayload * depayload,
|
|
GstCaps * caps);
|
|
static GstBuffer *gst_rtp_mp1s_depay_process (GstRTPBaseDepayload * depayload,
|
|
GstRTPBuffer * rtp);
|
|
|
|
static void
|
|
gst_rtp_mp1s_depay_class_init (GstRtpMP1SDepayClass * klass)
|
|
{
|
|
GstElementClass *gstelement_class;
|
|
GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
|
|
|
|
gstelement_class = (GstElementClass *) klass;
|
|
gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
|
|
|
|
gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_mp1s_depay_process;
|
|
gstrtpbasedepayload_class->set_caps = gst_rtp_mp1s_depay_setcaps;
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_rtp_mp1s_depay_src_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_rtp_mp1s_depay_sink_template);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"RTP MPEG1 System Stream depayloader", "Codec/Depayloader/Network/RTP",
|
|
"Extracts MPEG1 System Streams from RTP packets (RFC 3555)",
|
|
"Wim Taymans <wim.taymans@gmail.com>");
|
|
}
|
|
|
|
static void
|
|
gst_rtp_mp1s_depay_init (GstRtpMP1SDepay * rtpmp1sdepay)
|
|
{
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtp_mp1s_depay_setcaps (GstRTPBaseDepayload * 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_RTP_BASE_DEPAYLOAD_SRCPAD (depayload), srccaps);
|
|
gst_caps_unref (srccaps);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstBuffer *
|
|
gst_rtp_mp1s_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
|
|
{
|
|
GstBuffer *outbuf;
|
|
|
|
outbuf = gst_rtp_buffer_get_payload_buffer (rtp);
|
|
|
|
if (outbuf) {
|
|
GST_DEBUG ("gst_rtp_mp1s_depay_chain: pushing buffer of size %"
|
|
G_GSIZE_FORMAT, gst_buffer_get_size (outbuf));
|
|
|
|
gst_rtp_drop_meta (GST_ELEMENT_CAST (depayload), outbuf, 0);
|
|
}
|
|
|
|
return outbuf;
|
|
}
|