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rist: Add a plugin implenting RIST TR-06-1 Simple Profile

Browse source 
RIST TR-06-1 is a specification for video streaming made by the VSF
group. It is using a subset of RTP specification to which some
modification has been made to improve RTX behaviour and avoid any need
for signaling. The plugin implement ristrtxsend / ristrtxreceive element
which are the RIST specific equivalent of rtprtxsend/rtprtxreceive and
ristsink / ristsrc which implement rist transmitter and receiver. The
RIST protocol is meant to be used in unidirectional way. Typically, MPEG
TS over RTP is used.

Currently we support unicast and multicast streaming according to the
specification. This patch does not include any bonding support yet. The
ristsrc element introduce rist:// URI handling in parallel to it's
property configuration interface.
This commit is contained in:
Nicolas Dufresne 2019-01-21 11:44:10 -05:00 committed by Nicolas Dufresne
parent 8d4ce1e853
commit f0d04b39dd
11 changed files with 3087 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
configure.ac
View file

@ -478,6 +478,7 @@ AG_GST_CHECK_PLUGIN(pnm)
AG_GST_CHECK_PLUGIN(proxy)
AG_GST_CHECK_PLUGIN(rawparse)
AG_GST_CHECK_PLUGIN(removesilence)
AG_GST_CHECK_PLUGIN(rist)
AG_GST_CHECK_PLUGIN(sdp)
AG_GST_CHECK_PLUGIN(segmentclip)
AG_GST_CHECK_PLUGIN(siren)
@ -2556,6 +2557,7 @@ gst/pnm/Makefile
gst/proxy/Makefile
gst/rawparse/Makefile
gst/removesilence/Makefile
gst/rist/Makefile
gst/sdp/Makefile
gst/segmentclip/Makefile
gst/siren/Makefile

4
gst/meson.build
View file

@ -8,8 +8,8 @@ foreach plugin : ['accurip', 'adpcmdec', 'adpcmenc', 'aiff', 'asfmux',
'ivfparse', 'ivtc', 'jp2kdecimator', 'jpegformat', 'librfb',
'midi', 'mpegdemux', 'mpegpsmux', 'mpegtsdemux', 'mpegtsmux',
'mxf', 'netsim', 'onvif', 'pcapparse', 'pnm', 'proxy',
'rawparse', 'removesilence', 'sdp', 'segmentclip', 'siren',
'smooth', 'speed', 'subenc', 'timecode',
'rawparse', 'removesilence', 'rist', 'sdp', 'segmentclip',
'siren', 'smooth', 'speed', 'subenc', 'timecode',
'videofilters', 'videoframe_audiolevel', 'videoparsers',
'videosignal', 'vmnc', 'y4m', 'yadif']
if not get_option(plugin).disabled()

23
gst/rist/Makefile.am Normal file
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@ -0,0 +1,23 @@
plugin_LTLIBRARIES = libgstrist.la
libgstrist_la_SOURCES = \
gstristsrc.c \
gstristsink.c \
gstristrtxsend.c \
gstristrtxreceive.c \
gstristplugin.c
noinst_HEADERS = \
gstrist.h
libgstrist_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) \
$(GST_CFLAGS) \
$(GIO_CFLAGS)
libgstrist_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) \
$(GST_BASE_LIBS) \
-lgstrtp-@GST_API_VERSION@ \
$(GST_NET_LIBS) \
$(GST_LIBS) \
$(GIO_LIBS)
libgstrist_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstrist_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)

59
gst/rist/gstrist.h Normal file
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@ -0,0 +1,59 @@
/* GStreamer RIST plugin
* Copyright (C) 2019 Net Insight AB
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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.
*/
#include <gst/gst.h>
#ifndef __GST_RIST_H__
#define __GST_RIST_H__
#define GST_TYPE_RIST_RTX_RECEIVE (gst_rist_rtx_receive_get_type())
#define GST_RIST_RTX_RECEIVE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RIST_RTX_RECEIVE, GstRistRtxReceive))
typedef struct _GstRistRtxReceive GstRistRtxReceive;
typedef struct {
GstElementClass parent_class;
} GstRistRtxReceiveClass;
GType gst_rist_rtx_receive_get_type (void);
#define GST_TYPE_RIST_RTX_SEND (gst_rist_rtx_send_get_type())
#define GST_RIST_RTX_SEND(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RIST_RTX_SEND, GstRistRtxSend))
typedef struct _GstRistRtxSend GstRistRtxSend;
typedef struct {
GstElementClass parent_class;
} GstRistRtxSendClass;
GType gst_rist_rtx_send_get_type (void);
#define GST_TYPE_RIST_SRC (gst_rist_src_get_type())
#define GST_RIST_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RIST_SRC,GstRistSrc))
typedef struct _GstRistSrc GstRistSrc;
typedef struct {
GstBinClass parent;
} GstRistSrcClass;
GType gst_rist_src_get_type (void);
#define GST_TYPE_RIST_SINK (gst_rist_sink_get_type())
#define GST_RIST_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RIST_SINK,GstRistSink))
typedef struct _GstRistSink GstRistSink;
typedef struct {
GstBinClass parent;
} GstRistSinkClass;
GType gst_rist_sink_get_type (void);
#endif

50
gst/rist/gstristplugin.c Normal file
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@ -0,0 +1,50 @@
/* GStreamer RIST plugin
* Copyright (C) 2019 Net Insight AB
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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 "gstrist.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "ristsrc", GST_RANK_PRIMARY,
GST_TYPE_RIST_SRC))
return FALSE;
if (!gst_element_register (plugin, "ristsink", GST_RANK_PRIMARY,
GST_TYPE_RIST_SINK))
return FALSE;
if (!gst_element_register (plugin, "ristrtxsend", GST_RANK_NONE,
GST_TYPE_RIST_RTX_SEND))
return FALSE;
if (!gst_element_register (plugin, "ristrtxreceive", GST_RANK_NONE,
GST_TYPE_RIST_RTX_RECEIVE))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
rist,
"Source and Sink for RIST TR-06-1 streaming specification",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

302
gst/rist/gstristrtxreceive.c Normal file
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@ -0,0 +1,302 @@
/* RTP Retransmission receiver element for GStreamer
*
* gstrtprtxreceive.c:
*
* Copyright (C) 2013-2019 Collabora Ltd.
* @author Julien Isorce <julien.isorce@collabora.co.uk>
* Nicolas Dufresne <nicolas.dufresne@collabora.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.
*/
/**
* SECTION:element-ristrtxreceive
* @title: ristrtxreceive
* @see_also: ristrtxsend
*
* This element translates RIST RTX packets into its original form with the
* %GST_RTP_BUFFER_FLAG_RETRANSMISSION flag set. This element is intented to
* be used by ristsrc element.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/rtp/gstrtpbuffer.h>
#include "gstrist.h"
GST_DEBUG_CATEGORY_STATIC (gst_rist_rtx_receive_debug);
#define GST_CAT_DEFAULT gst_rist_rtx_receive_debug
enum
{
PROP_0,
PROP_NUM_RTX_REQUESTS,
PROP_NUM_RTX_PACKETS,
PROP_RIST
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp")
);
struct _GstRistRtxReceive
{
GstElement element;
/* pad */
GstPad *sinkpad;
GstPad *srcpad;
/* statistics */
guint num_rtx_requests;
guint num_rtx_packets;
GstClockTime last_time;
};
static gboolean gst_rist_rtx_receive_src_event (GstPad * pad,
GstObject * parent, GstEvent * event);
static GstFlowReturn gst_rist_rtx_receive_chain (GstPad * pad,
GstObject * parent, GstBuffer * buffer);
static GstStateChangeReturn gst_rist_rtx_receive_change_state (GstElement *
element, GstStateChange transition);
static void gst_rist_rtx_receive_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
G_DEFINE_TYPE_WITH_CODE (GstRistRtxReceive, gst_rist_rtx_receive,
GST_TYPE_ELEMENT, GST_DEBUG_CATEGORY_INIT (gst_rist_rtx_receive_debug,
"ristrtxreceive", 0, "RIST retransmission receiver"));
static void
gst_rist_rtx_receive_class_init (GstRistRtxReceiveClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->get_property = gst_rist_rtx_receive_get_property;
g_object_class_install_property (gobject_class, PROP_NUM_RTX_REQUESTS,
g_param_spec_uint ("num-rtx-requests", "Num RTX Requests",
"Number of retransmission events received", 0, G_MAXUINT,
0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NUM_RTX_PACKETS,
g_param_spec_uint ("num-rtx-packets", "Num RTX Packets",
" Number of retransmission packets received", 0, G_MAXUINT,
0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (gstelement_class, &src_factory);
gst_element_class_add_static_pad_template (gstelement_class, &sink_factory);
gst_element_class_set_static_metadata (gstelement_class,
"RIST Retransmission receiver", "Codec",
"Receive retransmitted RIST packets according to VSF TR-06-1",
"Nicolas Dufresne <nicolas.dufresne@collabora.com>");
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_rist_rtx_receive_change_state);
}
static void
gst_rist_rtx_receive_reset (GstRistRtxReceive * rtx)
{
GST_OBJECT_LOCK (rtx);
rtx->num_rtx_requests = 0;
rtx->num_rtx_packets = 0;
GST_OBJECT_UNLOCK (rtx);
}
static void
gst_rist_rtx_receive_init (GstRistRtxReceive * rtx)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (rtx);
rtx->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"src"), "src");
GST_PAD_SET_PROXY_CAPS (rtx->srcpad);
GST_PAD_SET_PROXY_ALLOCATION (rtx->srcpad);
gst_pad_set_event_function (rtx->srcpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_receive_src_event));
gst_element_add_pad (GST_ELEMENT (rtx), rtx->srcpad);
rtx->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
GST_PAD_SET_PROXY_CAPS (rtx->sinkpad);
GST_PAD_SET_PROXY_ALLOCATION (rtx->sinkpad);
gst_pad_set_chain_function (rtx->sinkpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_receive_chain));
gst_element_add_pad (GST_ELEMENT (rtx), rtx->sinkpad);
}
static gboolean
gst_rist_rtx_receive_src_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstRistRtxReceive *rtx = GST_RIST_RTX_RECEIVE (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:
{
const GstStructure *s = gst_event_get_structure (event);
/* This event usually comes from the downstream gstrtpjitterbuffer */
if (gst_structure_has_name (s, "GstRTPRetransmissionRequest")) {
#ifndef GST_DISABLE_GST_DEBUG
guint seqnum = 0;
guint ssrc = 0;
/* retrieve seqnum of the packet that need to be retransmitted */
if (!gst_structure_get_uint (s, "seqnum", &seqnum))
seqnum = -1;
/* retrieve ssrc of the packet that need to be retransmitted
* it's useful when reconstructing the original packet from the rtx packet */
if (!gst_structure_get_uint (s, "ssrc", &ssrc))
ssrc = -1;
GST_DEBUG_OBJECT (rtx, "got rtx request for seqnum: %u, ssrc: %X",
seqnum, ssrc);
#endif
GST_OBJECT_LOCK (rtx);
/* increase number of seen requests for our statistics */
++rtx->num_rtx_requests;
GST_OBJECT_UNLOCK (rtx);
}
break;
}
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
static GstFlowReturn
gst_rist_rtx_receive_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer)
{
GstRistRtxReceive *rtx = GST_RIST_RTX_RECEIVE (parent);
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
guint32 ssrc = 0;
guint16 seqnum = 0;
gboolean is_rtx;
/* map current rtp packet to parse its header */
if (!gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp))
goto invalid_buffer;
ssrc = gst_rtp_buffer_get_ssrc (&rtp);
seqnum = gst_rtp_buffer_get_seq (&rtp);
/* check if we have a retransmission packet (this information comes from SDP) */
GST_OBJECT_LOCK (rtx);
/* RIST sets SSRC LSB to 1 to indicate an RTC packet */
is_rtx = ssrc & 0x1;
rtx->last_time = GST_BUFFER_PTS (buffer);
if (is_rtx)
/* increase our statistic */
++rtx->num_rtx_packets;
GST_OBJECT_UNLOCK (rtx);
/* create the retransmission packet */
if (is_rtx) {
GST_DEBUG_OBJECT (rtx,
"Recovered packet from RIST RTX seqnum:%u ssrc: %u",
gst_rtp_buffer_get_seq (&rtp), gst_rtp_buffer_get_ssrc (&rtp));
gst_rtp_buffer_set_ssrc (&rtp, ssrc & 0xFFFFFFFE);
GST_BUFFER_FLAG_SET (buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);
}
gst_rtp_buffer_unmap (&rtp);
GST_TRACE_OBJECT (rtx, "pushing packet seqnum:%u from master stream "
"ssrc: %X", seqnum, ssrc);
return gst_pad_push (rtx->srcpad, buffer);
invalid_buffer:
{
GST_ELEMENT_WARNING (rtx, STREAM, DECODE, (NULL),
("Received invalid RTP payload, dropping"));
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}
}
static void
gst_rist_rtx_receive_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRistRtxReceive *rtx = GST_RIST_RTX_RECEIVE (object);
switch (prop_id) {
case PROP_NUM_RTX_REQUESTS:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->num_rtx_requests);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_NUM_RTX_PACKETS:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->num_rtx_packets);
GST_OBJECT_UNLOCK (rtx);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_rist_rtx_receive_change_state (GstElement * element,
GstStateChange transition)
{
GstRistRtxReceive *rtx = GST_RIST_RTX_RECEIVE (element);
GstStateChangeReturn ret;
ret =
GST_ELEMENT_CLASS (gst_rist_rtx_receive_parent_class)->change_state
(element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rist_rtx_receive_reset (rtx);
break;
default:
break;
}
return ret;
}

772
gst/rist/gstristrtxsend.c Normal file
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@ -0,0 +1,772 @@
/* RIST Retransmission sender element for GStreamer
*
* gsristprtxsend.c:
*
* Copyright (C) 2013-2019 Collabora Ltd.
* @author Julien Isorce <julien.isorce@collabora.co.uk>
* Nicoas Dufresne <nicolas.dufresne@collabora.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.
*/
/**
* SECTION:element-ristrtxsend
* @title: ristrtxsend
* @see_also: ristrtxreceive
*
* This elements replies to custom events 'GstRTPRetransmissionRequest' and
* when available sends in RIST form the lost packet. This element is intented
* to be used by ristsink element.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <gst/base/gstdataqueue.h>
#include "gstrist.h"
GST_DEBUG_CATEGORY_STATIC (gst_rist_rtx_send_debug);
#define GST_CAT_DEFAULT gst_rist_rtx_send_debug
#define DEFAULT_MAX_SIZE_TIME 0
#define DEFAULT_MAX_SIZE_PACKETS 100
enum
{
PROP_0,
PROP_MAX_SIZE_TIME,
PROP_MAX_SIZE_PACKETS,
PROP_NUM_RTX_REQUESTS,
PROP_NUM_RTX_PACKETS,
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, " "clock-rate = (int) [1, MAX]")
);
struct _GstRistRtxSend
{
GstElement element;
/* pad */
GstPad *sinkpad;
GstPad *srcpad;
/* rtp packets that will be pushed out */
GstDataQueue *queue;
/* ssrc -> SSRCRtxData */
GHashTable *ssrc_data;
/* rtx ssrc -> master ssrc */
GHashTable *rtx_ssrcs;
/* buffering control properties */
guint max_size_time;
guint max_size_packets;
/* statistics */
guint num_rtx_requests;
guint num_rtx_packets;
};
static gboolean gst_rist_rtx_send_queue_check_full (GstDataQueue * queue,
guint visible, guint bytes, guint64 time, gpointer checkdata);
static gboolean gst_rist_rtx_send_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_rist_rtx_send_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static GstFlowReturn gst_rist_rtx_send_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
static GstFlowReturn gst_rist_rtx_send_chain_list (GstPad * pad,
GstObject * parent, GstBufferList * list);
static void gst_rist_rtx_send_src_loop (GstRistRtxSend * rtx);
static gboolean gst_rist_rtx_send_activate_mode (GstPad * pad,
GstObject * parent, GstPadMode mode, gboolean active);
static GstStateChangeReturn gst_rist_rtx_send_change_state (GstElement *
element, GstStateChange transition);
static void gst_rist_rtx_send_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rist_rtx_send_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_rist_rtx_send_finalize (GObject * object);
G_DEFINE_TYPE_WITH_CODE (GstRistRtxSend, gst_rist_rtx_send, GST_TYPE_ELEMENT,
GST_DEBUG_CATEGORY_INIT (gst_rist_rtx_send_debug, "ristrtxsend", 0,
"RIST retransmission sender"));
typedef struct
{
guint16 seqnum;
guint32 timestamp;
GstBuffer *buffer;
} BufferQueueItem;
static void
buffer_queue_item_free (BufferQueueItem * item)
{
gst_buffer_unref (item->buffer);
g_slice_free (BufferQueueItem, item);
}
typedef struct
{
guint32 rtx_ssrc;
guint16 seqnum_base, next_seqnum;
gint clock_rate;
/* history of rtp packets */
GSequence *queue;
} SSRCRtxData;
static SSRCRtxData *
ssrc_rtx_data_new (guint32 rtx_ssrc)
{
SSRCRtxData *data = g_slice_new0 (SSRCRtxData);
data->rtx_ssrc = rtx_ssrc;
data->next_seqnum = data->seqnum_base = g_random_int_range (0, G_MAXUINT16);
data->queue = g_sequence_new ((GDestroyNotify) buffer_queue_item_free);
return data;
}
static void
ssrc_rtx_data_free (SSRCRtxData * data)
{
g_sequence_free (data->queue);
g_slice_free (SSRCRtxData, data);
}
static void
gst_rist_rtx_send_class_init (GstRistRtxSendClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->get_property = gst_rist_rtx_send_get_property;
gobject_class->set_property = gst_rist_rtx_send_set_property;
gobject_class->finalize = gst_rist_rtx_send_finalize;
g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
g_param_spec_uint ("max-size-time", "Max Size Time",
"Amount of ms to queue (0 = unlimited)", 0, G_MAXUINT,
DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_SIZE_PACKETS,
g_param_spec_uint ("max-size-packets", "Max Size Packets",
"Amount of packets to queue (0 = unlimited)", 0, G_MAXINT16,
DEFAULT_MAX_SIZE_PACKETS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NUM_RTX_REQUESTS,
g_param_spec_uint ("num-rtx-requests", "Num RTX Requests",
"Number of retransmission events received", 0, G_MAXUINT,
0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NUM_RTX_PACKETS,
g_param_spec_uint ("num-rtx-packets", "Num RTX Packets",
" Number of retransmission packets sent", 0, G_MAXUINT,
0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (gstelement_class, &src_factory);
gst_element_class_add_static_pad_template (gstelement_class, &sink_factory);
gst_element_class_set_static_metadata (gstelement_class,
"RIST Retransmission Sender", "Codec",
"Retransmit RTP packets when needed, according to VSF TR-06-1",
"Nicolas Dufresne <nicolas.dufresne@collabora.com>");
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_change_state);
}
static void
gst_rist_rtx_send_reset (GstRistRtxSend * rtx)
{
GST_OBJECT_LOCK (rtx);
gst_data_queue_flush (rtx->queue);
g_hash_table_remove_all (rtx->ssrc_data);
g_hash_table_remove_all (rtx->rtx_ssrcs);
rtx->num_rtx_requests = 0;
rtx->num_rtx_packets = 0;
GST_OBJECT_UNLOCK (rtx);
}
static void
gst_rist_rtx_send_finalize (GObject * object)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (object);
g_hash_table_unref (rtx->ssrc_data);
g_hash_table_unref (rtx->rtx_ssrcs);
g_object_unref (rtx->queue);
G_OBJECT_CLASS (gst_rist_rtx_send_parent_class)->finalize (object);
}
static void
gst_rist_rtx_send_init (GstRistRtxSend * rtx)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (rtx);
rtx->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"src"), "src");
GST_PAD_SET_PROXY_CAPS (rtx->srcpad);
GST_PAD_SET_PROXY_ALLOCATION (rtx->srcpad);
gst_pad_set_event_function (rtx->srcpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_src_event));
gst_pad_set_activatemode_function (rtx->srcpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_activate_mode));
gst_element_add_pad (GST_ELEMENT (rtx), rtx->srcpad);
rtx->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
GST_PAD_SET_PROXY_CAPS (rtx->sinkpad);
GST_PAD_SET_PROXY_ALLOCATION (rtx->sinkpad);
gst_pad_set_event_function (rtx->sinkpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_sink_event));
gst_pad_set_chain_function (rtx->sinkpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_chain));
gst_pad_set_chain_list_function (rtx->sinkpad,
GST_DEBUG_FUNCPTR (gst_rist_rtx_send_chain_list));
gst_element_add_pad (GST_ELEMENT (rtx), rtx->sinkpad);
rtx->queue = gst_data_queue_new (gst_rist_rtx_send_queue_check_full, NULL,
NULL, rtx);
rtx->ssrc_data = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) ssrc_rtx_data_free);
rtx->rtx_ssrcs = g_hash_table_new (g_direct_hash, g_direct_equal);
rtx->max_size_time = DEFAULT_MAX_SIZE_TIME;
rtx->max_size_packets = DEFAULT_MAX_SIZE_PACKETS;
}
static void
gst_rist_rtx_send_set_flushing (GstRistRtxSend * rtx, gboolean flush)
{
GST_OBJECT_LOCK (rtx);
gst_data_queue_set_flushing (rtx->queue, flush);
gst_data_queue_flush (rtx->queue);
GST_OBJECT_UNLOCK (rtx);
}
static gboolean
gst_rist_rtx_send_queue_check_full (GstDataQueue * queue,
guint visible, guint bytes, guint64 time, gpointer checkdata)
{
return FALSE;
}
static void
gst_rtp_rtx_data_queue_item_free (gpointer item)
{
GstDataQueueItem *data = item;
if (data->object)
gst_mini_object_unref (data->object);
g_slice_free (GstDataQueueItem, data);
}
static gboolean
gst_rist_rtx_send_push_out (GstRistRtxSend * rtx, gpointer object)
{
GstDataQueueItem *data;
gboolean success;
data = g_slice_new0 (GstDataQueueItem);
data->object = GST_MINI_OBJECT (object);
data->size = 1;
data->duration = 1;
data->visible = TRUE;
data->destroy = gst_rtp_rtx_data_queue_item_free;
success = gst_data_queue_push (rtx->queue, data);
if (!success)
data->destroy (data);
return success;
}
static SSRCRtxData *
gst_rist_rtx_send_get_ssrc_data (GstRistRtxSend * rtx, guint32 ssrc)
{
SSRCRtxData *data;
guint32 rtx_ssrc = 0;
data = g_hash_table_lookup (rtx->ssrc_data, GUINT_TO_POINTER (ssrc));
if (!data) {
/* See 5.3.2 Retransmitted Packets, orignal packet have SSRC LSB set to
* 0, while RTX packet have LSB set to 1 */
rtx_ssrc = ssrc + 1;
data = ssrc_rtx_data_new (rtx_ssrc);
g_hash_table_insert (rtx->ssrc_data, GUINT_TO_POINTER (ssrc), data);
g_hash_table_insert (rtx->rtx_ssrcs, GUINT_TO_POINTER (rtx_ssrc),
GUINT_TO_POINTER (ssrc));
}
return data;
}
/*
* see RIST TR-06-1 5.3.2 Retransmitted Packets
*
* RIST simply resend the packet verbatim, with SSRC+1, the defaults SSRC always
* have the LSB set to 0, so we can differentiate the retransmission and the
* normal packet.
*/
static GstBuffer *
gst_rtp_rist_buffer_new (GstRistRtxSend * rtx, GstBuffer * buffer, guint32 ssrc)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buffer = gst_buffer_copy_deep (buffer);
gst_rtp_buffer_map (buffer, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_ssrc (&rtp, ssrc + 1);
gst_rtp_buffer_unmap (&rtp);
return buffer;
}
static gint
buffer_queue_items_cmp (BufferQueueItem * a, BufferQueueItem * b,
gpointer user_data)
{
/* gst_rtp_buffer_compare_seqnum returns the opposite of what we want,
* it returns negative when seqnum1 > seqnum2 and we want negative
* when b > a, i.e. a is smaller, so it comes first in the sequence */
return gst_rtp_buffer_compare_seqnum (b->seqnum, a->seqnum);
}
static gboolean
gst_rist_rtx_send_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:
{
const GstStructure *s = gst_event_get_structure (event);
/* This event usually comes from the downstream gstrtpsession */
if (gst_structure_has_name (s, "GstRTPRetransmissionRequest")) {
guint seqnum = 0;
guint ssrc = 0;
GstBuffer *rtx_buf = NULL;
/* retrieve seqnum of the packet that need to be retransmitted */
if (!gst_structure_get_uint (s, "seqnum", &seqnum))
seqnum = -1;
/* retrieve ssrc of the packet that need to be retransmitted */
if (!gst_structure_get_uint (s, "ssrc", &ssrc))
ssrc = -1;
GST_DEBUG_OBJECT (rtx, "got rtx request for seqnum: %u, ssrc: %X",
seqnum, ssrc);
GST_OBJECT_LOCK (rtx);
/* check if request is for us */
if (g_hash_table_contains (rtx->ssrc_data, GUINT_TO_POINTER (ssrc))) {
SSRCRtxData *data;
GSequenceIter *iter;
BufferQueueItem search_item;
/* update statistics */
++rtx->num_rtx_requests;
data = gst_rist_rtx_send_get_ssrc_data (rtx, ssrc);
search_item.seqnum = seqnum;
iter = g_sequence_lookup (data->queue, &search_item,
(GCompareDataFunc) buffer_queue_items_cmp, NULL);
if (iter) {
BufferQueueItem *item = g_sequence_get (iter);
GST_LOG_OBJECT (rtx, "found %u", item->seqnum);
rtx_buf = gst_rtp_rist_buffer_new (rtx, item->buffer, ssrc);
}
#ifndef GST_DISABLE_DEBUG
else {
BufferQueueItem *item = NULL;
iter = g_sequence_get_begin_iter (data->queue);
if (!g_sequence_iter_is_end (iter))
item = g_sequence_get (iter);
if (item && seqnum < item->seqnum) {
GST_DEBUG_OBJECT (rtx, "requested seqnum %u has already been "
"removed from the rtx queue; the first available is %u",
seqnum, item->seqnum);
} else {
GST_WARNING_OBJECT (rtx, "requested seqnum %u has not been "
"transmitted yet in the original stream; either the remote end "
"is not configured correctly, or the source is too slow",
seqnum);
}
#endif
}
}
GST_OBJECT_UNLOCK (rtx);
if (rtx_buf)
gst_rist_rtx_send_push_out (rtx, rtx_buf);
gst_event_unref (event);
return TRUE;
}
break;
}
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
static gboolean
gst_rist_rtx_send_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
gst_pad_push_event (rtx->srcpad, event);
gst_rist_rtx_send_set_flushing (rtx, TRUE);
gst_pad_pause_task (rtx->srcpad);
return TRUE;
case GST_EVENT_FLUSH_STOP:
gst_pad_push_event (rtx->srcpad, event);
gst_rist_rtx_send_set_flushing (rtx, FALSE);
gst_pad_start_task (rtx->srcpad,
(GstTaskFunction) gst_rist_rtx_send_src_loop, rtx, NULL);
return TRUE;
case GST_EVENT_EOS:
GST_INFO_OBJECT (rtx, "Got EOS - enqueueing it");
gst_rist_rtx_send_push_out (rtx, event);
return TRUE;
case GST_EVENT_CAPS:
{
GstCaps *caps;
GstStructure *s;
guint ssrc;
gint payload;
SSRCRtxData *data;
gst_event_parse_caps (event, &caps);
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_uint (s, "ssrc", &ssrc))
ssrc = -1;
if (!gst_structure_get_int (s, "payload", &payload))
payload = -1;
if (payload == -1)
GST_WARNING_OBJECT (rtx, "No payload in caps");
GST_OBJECT_LOCK (rtx);
data = gst_rist_rtx_send_get_ssrc_data (rtx, ssrc);
GST_DEBUG_OBJECT (rtx,
"got caps for payload: %d->%d, ssrc: %u : %" GST_PTR_FORMAT,
payload, ssrc, data->rtx_ssrc, caps);
gst_structure_get_int (s, "clock-rate", &data->clock_rate);
/* The session might need to know the RTX ssrc */
caps = gst_caps_copy (caps);
gst_caps_set_simple (caps, "rtx-ssrc", G_TYPE_UINT, data->rtx_ssrc,
"rtx-seqnum-offset", G_TYPE_UINT, data->seqnum_base, NULL);
GST_DEBUG_OBJECT (rtx, "got clock-rate from caps: %d for ssrc: %u",
data->clock_rate, ssrc);
GST_OBJECT_UNLOCK (rtx);
gst_event_unref (event);
event = gst_event_new_caps (caps);
gst_caps_unref (caps);
break;
}
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
/* like rtp_jitter_buffer_get_ts_diff() */
static guint32
gst_rist_rtx_send_get_ts_diff (SSRCRtxData * data)
{
guint64 high_ts, low_ts;
BufferQueueItem *high_buf, *low_buf;
guint32 result;
high_buf =
g_sequence_get (g_sequence_iter_prev (g_sequence_get_end_iter
(data->queue)));
low_buf = g_sequence_get (g_sequence_get_begin_iter (data->queue));
if (!high_buf || !low_buf || high_buf == low_buf)
return 0;
high_ts = high_buf->timestamp;
low_ts = low_buf->timestamp;
/* it needs to work if ts wraps */
if (high_ts >= low_ts) {
result = (guint32) (high_ts - low_ts);
} else {
result = (guint32) (high_ts + G_MAXUINT32 + 1 - low_ts);
}
/* return value in ms instead of clock ticks */
return (guint32) gst_util_uint64_scale_int (result, 1000, data->clock_rate);
}
/* Must be called with lock */
static void
process_buffer (GstRistRtxSend * rtx, GstBuffer * buffer)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
BufferQueueItem *item;
SSRCRtxData *data;
guint16 seqnum;
guint32 ssrc, rtptime;
/* read the information we want from the buffer */
gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
seqnum = gst_rtp_buffer_get_seq (&rtp);
ssrc = gst_rtp_buffer_get_ssrc (&rtp);
rtptime = gst_rtp_buffer_get_timestamp (&rtp);
gst_rtp_buffer_unmap (&rtp);
GST_TRACE_OBJECT (rtx, "Processing buffer seqnum: %u, ssrc: %X", seqnum,
ssrc);
data = gst_rist_rtx_send_get_ssrc_data (rtx, ssrc);
/* add current rtp buffer to queue history */
item = g_slice_new0 (BufferQueueItem);
item->seqnum = seqnum;
item->timestamp = rtptime;
item->buffer = gst_buffer_ref (buffer);
g_sequence_append (data->queue, item);
/* remove oldest packets from history if they are too many */
if (rtx->max_size_packets) {
while (g_sequence_get_length (data->queue) > rtx->max_size_packets)
g_sequence_remove (g_sequence_get_begin_iter (data->queue));
}
if (rtx->max_size_time) {
while (gst_rist_rtx_send_get_ts_diff (data) > rtx->max_size_time)
g_sequence_remove (g_sequence_get_begin_iter (data->queue));
}
}
static GstFlowReturn
gst_rist_rtx_send_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (parent);
GstFlowReturn ret;
GST_OBJECT_LOCK (rtx);
process_buffer (rtx, buffer);
GST_OBJECT_UNLOCK (rtx);
ret = gst_pad_push (rtx->srcpad, buffer);
return ret;
}
static gboolean
process_buffer_from_list (GstBuffer ** buffer, guint idx, gpointer user_data)
{
process_buffer (user_data, *buffer);
return TRUE;
}
static GstFlowReturn
gst_rist_rtx_send_chain_list (GstPad * pad, GstObject * parent,
GstBufferList * list)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (parent);
GstFlowReturn ret;
GST_OBJECT_LOCK (rtx);
gst_buffer_list_foreach (list, process_buffer_from_list, rtx);
GST_OBJECT_UNLOCK (rtx);
ret = gst_pad_push_list (rtx->srcpad, list);
return ret;
}
static void
gst_rist_rtx_send_src_loop (GstRistRtxSend * rtx)
{
GstDataQueueItem *data;
if (gst_data_queue_pop (rtx->queue, &data)) {
GST_LOG_OBJECT (rtx, "pushing rtx buffer %p", data->object);
if (G_LIKELY (GST_IS_BUFFER (data->object))) {
GST_OBJECT_LOCK (rtx);
/* Update statistics just before pushing. */
rtx->num_rtx_packets++;
GST_OBJECT_UNLOCK (rtx);
gst_pad_push (rtx->srcpad, GST_BUFFER (data->object));
} else if (GST_IS_EVENT (data->object)) {
gst_pad_push_event (rtx->srcpad, GST_EVENT (data->object));
/* after EOS, we should not send any more buffers,
* even if there are more requests coming in */
if (GST_EVENT_TYPE (data->object) == GST_EVENT_EOS) {
gst_rist_rtx_send_set_flushing (rtx, TRUE);
}
} else {
g_assert_not_reached ();
}
data->object = NULL; /* we no longer own that object */
data->destroy (data);
} else {
GST_LOG_OBJECT (rtx, "flushing");
gst_pad_pause_task (rtx->srcpad);
}
}
static gboolean
gst_rist_rtx_send_activate_mode (GstPad * pad, GstObject * parent,
GstPadMode mode, gboolean active)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (parent);
gboolean ret = FALSE;
switch (mode) {
case GST_PAD_MODE_PUSH:
if (active) {
gst_rist_rtx_send_set_flushing (rtx, FALSE);
ret = gst_pad_start_task (rtx->srcpad,
(GstTaskFunction) gst_rist_rtx_send_src_loop, rtx, NULL);
} else {
gst_rist_rtx_send_set_flushing (rtx, TRUE);
ret = gst_pad_stop_task (rtx->srcpad);
}
GST_INFO_OBJECT (rtx, "activate_mode: active %d, ret %d", active, ret);
break;
default:
break;
}
return ret;
}
static void
gst_rist_rtx_send_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (object);
switch (prop_id) {
case PROP_MAX_SIZE_TIME:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->max_size_time);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_MAX_SIZE_PACKETS:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->max_size_packets);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_NUM_RTX_REQUESTS:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->num_rtx_requests);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_NUM_RTX_PACKETS:
GST_OBJECT_LOCK (rtx);
g_value_set_uint (value, rtx->num_rtx_packets);
GST_OBJECT_UNLOCK (rtx);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_rist_rtx_send_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (object);
switch (prop_id) {
case PROP_MAX_SIZE_TIME:
GST_OBJECT_LOCK (rtx);
rtx->max_size_time = g_value_get_uint (value);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_MAX_SIZE_PACKETS:
GST_OBJECT_LOCK (rtx);
rtx->max_size_packets = g_value_get_uint (value);
GST_OBJECT_UNLOCK (rtx);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_rist_rtx_send_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstRistRtxSend *rtx = GST_RIST_RTX_SEND (element);
ret =
GST_ELEMENT_CLASS (gst_rist_rtx_send_parent_class)->change_state (element,
transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rist_rtx_send_reset (rtx);
break;
default:
break;
}
return ret;
}

838
gst/rist/gstristsink.c Normal file
View file

@ -0,0 +1,838 @@
/* GStreamer RIST plugin
* Copyright (C) 2019 Net Insight AB
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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.
*/
/**
* SECTION:element-ristsink
* @title: ristsink
* @see_also: ristsrc
*
* This element implements RIST TR-06-1 Simple Profile transmitter. It
* currently supports any registered RTP payload types such as MPEG TS. The
* stream passed to this element must be RTP payloaded already. Even though
* RTP SSRC collision is rare in unidirectional streaming, this element expect
* the upstream elements to obey to collision events and change the SSRC in
* use. Collision will ocure when tranmitting and receiving over multicast on
* the same host.
*
* ## Example launch line
* |[
* gst-launch-1.0 udpsrc ! tsparse set-timestamp=1 ! rtpmp2pay ! ristsink address=10.0.0.1 port=5004
* ]|
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gio/gio.h>
#include <gst/rtp/rtp.h>
#include "gstrist.h"
GST_DEBUG_CATEGORY_STATIC (gst_rist_sink_debug);
#define GST_CAT_DEFAULT gst_rist_sink_debug
enum
{
PROP_ADDRESS = 1,
PROP_PORT,
PROP_SENDER_BUFFER,
PROP_MIN_RTCP_INTERVAL,
PROP_MAX_RTCP_BANDWIDTH,
PROP_STATS_UPDATE_INTERVAL,
PROP_STATS,
PROP_CNAME,
PROP_MULTICAST_LOOPBACK,
PROP_MULTICAST_IFACE,
PROP_MULTICAST_TTL
};
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp"));
struct _GstRistSink
{
GstBin parent;
/* Elements contained in the pipeline */
GstElement *rtpbin;
GstElement *rtp_sink;
GstElement *rtcp_src;
GstElement *rtcp_sink;
GstElement *ssrc_filter;
GstPad *sinkpad;
/* RTX Elements */
GstElement *rtxbin;
GstElement *rtx_send;
/* For stats */
guint stats_interval;
guint32 rtp_ssrc;
guint32 rtcp_ssrc;
GstClockID stats_cid;
/* This is set whenever there is a pipeline construction failure, and used
* to fail state changes later */
gboolean construct_failed;
const gchar *missing_plugin;
};
G_DEFINE_TYPE_WITH_CODE (GstRistSink, gst_rist_sink, GST_TYPE_BIN,
GST_DEBUG_CATEGORY_INIT (gst_rist_sink_debug, "ristsink", 0, "RIST Sink"));
static GstCaps *
gst_rist_sink_request_pt_map (GstRistSrc * sink, GstElement * session, guint pt)
{
const GstRTPPayloadInfo *pt_info;
GstCaps *ret;
pt_info = gst_rtp_payload_info_for_pt (pt);
if (!pt_info || !pt_info->clock_rate)
return NULL;
ret = gst_caps_new_simple ("application/x-rtp",
"media", G_TYPE_STRING, pt_info->media,
"encoding_name", G_TYPE_STRING, pt_info->encoding_name,
"clock-rate", G_TYPE_INT, (gint) pt_info->clock_rate, NULL);
/* FIXME add sprop-parameter-set if any */
g_warn_if_fail (pt_info->encoding_parameters == NULL);
return ret;
}
static GstElement *
gst_rist_sink_request_aux_sender (GstRistSink * sink, guint session_id,
GstElement * rtpbin)
{
if (session_id != 0)
return NULL;
return gst_object_ref (sink->rtxbin);
}
static void
on_app_rtcp (GObject * session, guint32 subtype, guint32 ssrc,
const gchar * name, GstBuffer * data, GstElement * rtpsession)
{
if (g_str_equal (name, "RIST")) {
GstEvent *event;
GstPad *send_rtp_sink;
GstMapInfo map;
gint i;
send_rtp_sink = gst_element_get_static_pad (rtpsession, "send_rtp_sink");
if (send_rtp_sink) {
gst_buffer_map (data, &map, GST_MAP_READ);
for (i = 0; i < map.size; i += sizeof (guint32)) {
guint32 dword = GST_READ_UINT32_BE (map.data + i);
guint16 seqnum = dword >> 16;
guint16 num = dword & 0x0000FFFF;
guint16 j;
GST_DEBUG ("got RIST nack packet, #%u %u", seqnum, num);
/* num is inclusive, i.e. it can be 0, which means exactly 1 seqnum */
for (j = 0; j <= num; j++) {
event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
gst_structure_new ("GstRTPRetransmissionRequest",
"seqnum", G_TYPE_UINT, (guint) seqnum + j,
"ssrc", G_TYPE_UINT, (guint) ssrc, NULL));
gst_pad_push_event (send_rtp_sink, event);
}
}
gst_buffer_unmap (data, &map);
gst_object_unref (send_rtp_sink);
}
}
}
static void
gst_rist_sink_on_new_sender_ssrc (GstRistSink * sink, guint session_id,
guint ssrc, GstElement * rtpbin)
{
GObject *gstsession = NULL;
GObject *session = NULL;
GObject *source = NULL;
if (session_id != 0)
return;
g_signal_emit_by_name (rtpbin, "get-session", session_id, &gstsession);
g_signal_emit_by_name (rtpbin, "get-internal-session", session_id, &session);
g_signal_emit_by_name (session, "get-source-by-ssrc", ssrc, &source);
if (ssrc & 1)
g_object_set (source, "disable-rtcp", TRUE, NULL);
else
g_signal_connect (session, "on-app-rtcp", (GCallback) on_app_rtcp,
gstsession);
g_object_unref (source);
g_object_unref (session);
}
static void
gst_rist_sink_on_new_receiver_ssrc (GstRistSink * sink, guint session_id,
guint ssrc, GstElement * rtpbin)
{
if (session_id != 0)
return;
GST_INFO_OBJECT (sink, "Got RTCP remote SSRC %u", ssrc);
sink->rtcp_ssrc = ssrc;
}
static GstPadProbeReturn
gst_rist_sink_fix_collision (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
GstEvent *event = info->data;
const GstStructure *cs;
GstStructure *s;
guint ssrc;
/* We simply ignore collisions */
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_UPSTREAM)
return GST_PAD_PROBE_OK;
cs = gst_event_get_structure (event);
if (!gst_structure_has_name (cs, "GstRTPCollision"))
return GST_PAD_PROBE_OK;
gst_structure_get_uint (cs, "suggested-ssrc", &ssrc);
if ((ssrc & 1) == 0)
return GST_PAD_PROBE_OK;
event = info->data = gst_event_make_writable (event);
/* we can drop the const qualifier as we ensured writability */
s = (GstStructure *) gst_event_get_structure (event);
gst_structure_set (s, "suggested-ssrc", G_TYPE_UINT, ssrc - 1, NULL);
return GST_PAD_PROBE_OK;
}
static gboolean
gst_rist_sink_set_caps (GstRistSink * sink, GstCaps * caps)
{
const GstStructure *s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_uint (s, "ssrc", &sink->rtp_ssrc)) {
GST_ELEMENT_ERROR (sink, CORE, NEGOTIATION, ("No 'ssrc' field in caps."),
(NULL));
return FALSE;
}
if (sink->rtp_ssrc & 1) {
GST_ELEMENT_ERROR (sink, CORE, NEGOTIATION,
("Invalid RIST SSRC, LSB must be zero."), (NULL));
return FALSE;
}
return TRUE;
}
static gboolean
gst_rist_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstRistSink *sink = GST_RIST_SINK (parent);
GstCaps *caps;
gboolean ret = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
gst_event_parse_caps (event, &caps);
ret = gst_rist_sink_set_caps (sink, caps);
break;
default:
break;
}
if (ret)
ret = gst_pad_event_default (pad, parent, event);
else
gst_event_unref (event);
return ret;
}
static void
gst_rist_sink_init (GstRistSink * sink)
{
GstPad *ssrc_filter_sinkpad;
GstCaps *ssrc_caps;
GstPad *pad, *gpad;
GstStructure *sdes = NULL;
/* Construct the RIST RTP sender pipeline.
*
* capsfilter*-> [send_rtp_sink_%u] -------- [send_rtp_src_%u] -> udpsink
* | rtpbin |
* udpsrc -> [recv_rtcp_sink_%u] -------- [send_rtcp_src_%u] -> * udpsink
*
* * To select RIST compatible SSRC
*/
sink->rtpbin = gst_element_factory_make ("rtpbin", "rist_send_rtbpin");
if (!sink->rtpbin) {
sink->missing_plugin = "rtpmanager";
goto missing_plugin;
}
/* RIST specification says the SDES should only contain the CNAME */
g_object_get (sink->rtpbin, "sdes", &sdes, NULL);
gst_structure_remove_field (sdes, "tool");
gst_bin_add (GST_BIN (sink), sink->rtpbin);
g_object_set (sink->rtpbin, "do-retransmission", TRUE,
"rtp-profile", 3 /* AVFP */ ,
"sdes", sdes, NULL);
gst_structure_free (sdes);
g_signal_connect_swapped (sink->rtpbin, "request-pt-map",
G_CALLBACK (gst_rist_sink_request_pt_map), sink);
g_signal_connect_swapped (sink->rtpbin, "request-aux-sender",
G_CALLBACK (gst_rist_sink_request_aux_sender), sink);
g_signal_connect_swapped (sink->rtpbin, "on-new-sender-ssrc",
G_CALLBACK (gst_rist_sink_on_new_sender_ssrc), sink);
g_signal_connect_swapped (sink->rtpbin, "on-new-ssrc",
G_CALLBACK (gst_rist_sink_on_new_receiver_ssrc), sink);
sink->rtxbin = gst_bin_new ("rist_send_rtxbin");
g_object_ref_sink (sink->rtxbin);
sink->rtx_send = gst_element_factory_make ("ristrtxsend", "rist_rtx_send");
gst_bin_add (GST_BIN (sink->rtxbin), sink->rtx_send);
g_object_set (sink->rtx_send, "max-size-packets", 0, NULL);
pad = gst_element_get_static_pad (sink->rtx_send, "sink");
gpad = gst_ghost_pad_new ("sink_0", pad);
gst_object_unref (pad);
gst_element_add_pad (sink->rtxbin, gpad);
pad = gst_element_get_static_pad (sink->rtx_send, "src");
gpad = gst_ghost_pad_new ("src_0", pad);
gst_object_unref (pad);
gst_element_add_pad (sink->rtxbin, gpad);
sink->rtp_sink = gst_element_factory_make ("udpsink", "rist_rtp_udpsink");
sink->rtcp_src = gst_element_factory_make ("udpsrc", "rist_rtcp_udpsrc");
sink->rtcp_sink = gst_element_factory_make ("udpsink", "rist_rtcp_udpsink");
if (!sink->rtp_sink || !sink->rtcp_src || !sink->rtcp_sink) {
g_clear_object (&sink->rtp_sink);
g_clear_object (&sink->rtcp_src);
g_clear_object (&sink->rtcp_sink);
sink->missing_plugin = "udp";
goto missing_plugin;
}
gst_bin_add_many (GST_BIN (sink), sink->rtp_sink, sink->rtcp_src,
sink->rtcp_sink, NULL);
gst_element_set_locked_state (sink->rtcp_src, TRUE);
gst_element_set_locked_state (sink->rtcp_sink, TRUE);
sink->ssrc_filter = gst_element_factory_make ("capsfilter",
"rist_ssrc_filter");
if (!sink->ssrc_filter) {
sink->missing_plugin = "coreelements";
goto missing_plugin;
}
gst_bin_add (GST_BIN (sink), sink->ssrc_filter);
sink->rtp_ssrc = g_random_int () & ~1;
ssrc_caps = gst_caps_new_simple ("application/x-rtp",
"ssrc", G_TYPE_UINT, sink->rtp_ssrc, NULL);
gst_caps_append_structure (ssrc_caps,
gst_structure_new_empty ("application/x-rtp"));
g_object_set (sink->ssrc_filter, "caps", ssrc_caps, NULL);
gst_caps_unref (ssrc_caps);
gst_element_link_pads (sink->ssrc_filter, "src", sink->rtpbin,
"send_rtp_sink_0");
gst_element_link_pads (sink->rtpbin, "send_rtp_src_0", sink->rtp_sink,
"sink");
gst_element_link_pads (sink->rtcp_src, "src", sink->rtpbin,
"recv_rtcp_sink_0");
gst_element_link_pads (sink->rtpbin, "send_rtcp_src_0", sink->rtcp_sink,
"sink");
ssrc_filter_sinkpad = gst_element_get_static_pad (sink->ssrc_filter, "sink");
sink->sinkpad = gst_ghost_pad_new_from_template ("sink", ssrc_filter_sinkpad,
gst_static_pad_template_get (&sink_templ));
gst_pad_set_event_function (sink->sinkpad, gst_rist_sink_event);
gst_element_add_pad (GST_ELEMENT (sink), sink->sinkpad);
gst_object_unref (ssrc_filter_sinkpad);
gst_pad_add_probe (sink->sinkpad, GST_PAD_PROBE_TYPE_EVENT_UPSTREAM,
gst_rist_sink_fix_collision, sink, NULL);
return;
missing_plugin:
{
GST_ERROR_OBJECT (sink, "'%s' plugin is missing.", sink->missing_plugin);
sink->construct_failed = TRUE;
/* Just make our element valid, so we fail cleanly */
gst_element_add_pad (GST_ELEMENT (sink),
gst_pad_new_from_static_template (&sink_templ, "sink"));
}
}
static GstStateChangeReturn
gst_rist_sink_start (GstRistSink * sink)
{
GSocket *socket = NULL;
GInetAddress *iaddr = NULL;
gchar *remote_addr = NULL;
guint remote_port;
GError *error = NULL;
if (sink->construct_failed) {
GST_ELEMENT_ERROR (sink, CORE, MISSING_PLUGIN,
("Your GStreamer installation is missing plugin '%s'",
sink->missing_plugin), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
g_object_get (sink->rtcp_sink, "host", &remote_addr, "port", &remote_port,
NULL);
iaddr = g_inet_address_new_from_string (remote_addr);
if (!iaddr) {
GList *results;
GResolver *resolver = NULL;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, remote_addr, NULL, &error);
if (!results) {
g_object_unref (resolver);
goto dns_resolve_failed;
}
iaddr = G_INET_ADDRESS (g_object_ref (results->data));
g_free (remote_addr);
remote_addr = g_inet_address_to_string (iaddr);
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
if (g_inet_address_get_is_multicast (iaddr)) {
g_object_set (sink->rtcp_src, "address", remote_addr, "port", remote_port,
NULL);
} else {
const gchar *any_addr;
if (g_inet_address_get_family (iaddr) == G_SOCKET_FAMILY_IPV6)
any_addr = "::";
else
any_addr = "0.0.0.0";
g_object_set (sink->rtcp_src, "address", any_addr, "port", 0, NULL);
}
g_object_unref (iaddr);
gst_element_set_locked_state (sink->rtcp_src, FALSE);
gst_element_sync_state_with_parent (sink->rtcp_src);
/* share the socket created by the sink */
g_object_get (sink->rtcp_src, "used-socket", &socket, NULL);
g_object_set (sink->rtcp_sink, "socket", socket, "auto-multicast", FALSE,
"close-socket", FALSE, NULL);
g_object_unref (socket);
gst_element_set_locked_state (sink->rtcp_sink, FALSE);
gst_element_sync_state_with_parent (sink->rtcp_sink);
return GST_STATE_CHANGE_SUCCESS;
dns_resolve_failed:
GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND,
("Could not resolve hostname '%s'", remote_addr),
("DNS resolver reported: %s", error->message));
g_free (remote_addr);
g_error_free (error);
return GST_STATE_CHANGE_FAILURE;
}
static GstStructure *
gst_rist_sink_create_stats (GstRistSink * sink)
{
GObject *session = NULL, *source = NULL;
GstStructure *sstats = NULL, *ret;
guint64 pkt_sent = 0, rtx_sent = 0, rtt;
guint rb_rtt = 0;
ret = gst_structure_new_empty ("rist/x-sender-stats");
g_signal_emit_by_name (sink->rtpbin, "get-internal-session", 0, &session);
if (!session)
return ret;
g_signal_emit_by_name (session, "get-source-by-ssrc", sink->rtp_ssrc,
&source);
if (source) {
g_object_get (source, "stats", &sstats, NULL);
gst_structure_get_uint64 (sstats, "packets-sent", &pkt_sent);
gst_structure_free (sstats);
g_clear_object (&source);
}
g_signal_emit_by_name (session, "get-source-by-ssrc", sink->rtcp_ssrc,
&source);
if (source) {
g_object_get (source, "stats", &sstats, NULL);
gst_structure_get_uint (sstats, "rb-round-trip", &rb_rtt);
gst_structure_free (sstats);
g_clear_object (&source);
}
g_object_unref (session);
g_object_get (sink->rtx_send, "num-rtx-packets", &rtx_sent, NULL);
/* rb_rtt is in Q16 in NTP time */
rtt = gst_util_uint64_scale (rb_rtt, GST_SECOND, 65536);
gst_structure_set (ret, "sent-original-packets", G_TYPE_UINT64, pkt_sent,
"sent-retransmitted-packets", G_TYPE_UINT64, rtx_sent,
"round-trip-time", G_TYPE_UINT64, rtt, NULL);
return ret;
}
static gboolean
gst_rist_sink_dump_stats (GstClock * clock, GstClockTime time, GstClockID id,
gpointer user_data)
{
GstRistSink *sink = GST_RIST_SINK (user_data);
GstStructure *stats = gst_rist_sink_create_stats (sink);
gst_println ("%s: %" GST_PTR_FORMAT, GST_OBJECT_NAME (sink), stats);
gst_structure_free (stats);
return TRUE;
}
static void
gst_rist_sink_enable_stats_interval (GstRistSink * sink)
{
GstClock *clock;
GstClockTime start, interval;
if (sink->stats_interval == 0)
return;
interval = sink->stats_interval * GST_MSECOND;
clock = gst_system_clock_obtain ();
start = gst_clock_get_time (clock) + interval;
sink->stats_cid = gst_clock_new_periodic_id (clock, start, interval);
gst_clock_id_wait_async (sink->stats_cid, gst_rist_sink_dump_stats,
gst_object_ref (sink), (GDestroyNotify) gst_object_unref);
gst_object_unref (clock);
}
static void
gst_rist_sink_disable_stats_interval (GstRistSink * sink)
{
if (sink->stats_cid) {
gst_clock_id_unschedule (sink->stats_cid);
gst_clock_id_unref (sink->stats_cid);
sink->stats_cid = NULL;
}
}
static GstStateChangeReturn
gst_rist_sink_change_state (GstElement * element, GstStateChange transition)
{
GstRistSink *sink = GST_RIST_SINK (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rist_sink_disable_stats_interval (sink);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (gst_rist_sink_parent_class)->change_state (element,
transition);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
ret = gst_rist_sink_start (sink);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_rist_sink_enable_stats_interval (sink);
break;
default:
break;
}
return ret;
}
static void
gst_rist_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstRistSink *sink = GST_RIST_SINK (object);
GstElement *session = NULL;
GstClockTime interval;
GstStructure *sdes;
if (sink->construct_failed)
return;
switch (prop_id) {
case PROP_ADDRESS:
g_object_get_property (G_OBJECT (sink->rtp_sink), "host", value);
break;
case PROP_PORT:
g_object_get_property (G_OBJECT (sink->rtp_sink), "port", value);
break;
case PROP_SENDER_BUFFER:
g_object_get_property (G_OBJECT (sink->rtx_send), "max-size-time", value);
break;
case PROP_MIN_RTCP_INTERVAL:
g_signal_emit_by_name (sink->rtpbin, "get-session", 0, &session);
g_object_get (session, "rtcp-min-interval", &interval, NULL);
g_value_set_uint (value, (guint) (interval / GST_MSECOND));
g_object_unref (session);
break;
case PROP_MAX_RTCP_BANDWIDTH:
g_signal_emit_by_name (sink->rtpbin, "get-session", 0, &session);
g_object_get_property (G_OBJECT (session), "rtcp-fraction", value);
g_object_unref (session);
break;
case PROP_STATS_UPDATE_INTERVAL:
g_value_set_uint (value, sink->stats_interval);
break;
case PROP_STATS:
g_value_take_boxed (value, gst_rist_sink_create_stats (sink));
break;
case PROP_CNAME:
g_object_get (sink->rtpbin, "sdes", &sdes, NULL);
g_value_set_string (value, gst_structure_get_string (sdes, "cname"));
gst_structure_free (sdes);
break;
case PROP_MULTICAST_LOOPBACK:
g_object_get_property (G_OBJECT (sink->rtp_sink), "loop", value);
break;
case PROP_MULTICAST_IFACE:
g_object_get_property (G_OBJECT (sink->rtp_sink),
"multicast-iface", value);
break;
case PROP_MULTICAST_TTL:
g_object_get_property (G_OBJECT (sink->rtp_sink), "ttl-mc", value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_rist_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstRistSink *sink = GST_RIST_SINK (object);
GstElement *session = NULL;
GstStructure *sdes;
if (sink->construct_failed)
return;
switch (prop_id) {
case PROP_ADDRESS:
g_object_set_property (G_OBJECT (sink->rtp_sink), "host", value);
g_object_set_property (G_OBJECT (sink->rtcp_sink), "host", value);
break;
case PROP_PORT:{
guint port = g_value_get_uint (value);
/* According to 5.1.1, RTCP receiver port most be event number and RTCP
* port should be the RTP port + 1 */
if (port & 0x1) {
g_warning ("Invalid RIST port %u, should be an even number.", port);
return;
}
g_object_set (sink->rtp_sink, "port", port, NULL);
g_object_set (sink->rtcp_sink, "port", port + 1, NULL);
break;
}
case PROP_SENDER_BUFFER:
g_object_set (sink->rtx_send,
"max-size-time", g_value_get_uint (value), NULL);
break;
case PROP_MIN_RTCP_INTERVAL:
g_signal_emit_by_name (sink->rtpbin, "get-session", 0, &session);
g_object_set (session, "rtcp-min-interval",
g_value_get_uint (value) * GST_MSECOND, NULL);
g_object_unref (session);
break;
case PROP_MAX_RTCP_BANDWIDTH:
g_signal_emit_by_name (sink->rtpbin, "get-session", 0, &session);
g_object_set (session, "rtcp-fraction", g_value_get_double (value), NULL);
g_object_unref (session);
break;
case PROP_STATS_UPDATE_INTERVAL:
sink->stats_interval = g_value_get_uint (value);
break;
case PROP_CNAME:
g_object_get (sink->rtpbin, "sdes", &sdes, NULL);
gst_structure_set_value (sdes, "cname", value);
g_object_set (sink->rtpbin, "sdes", sdes, NULL);
gst_structure_free (sdes);
break;
case PROP_MULTICAST_LOOPBACK:
g_object_set_property (G_OBJECT (sink->rtp_sink), "loop", value);
g_object_set_property (G_OBJECT (sink->rtcp_sink), "loop", value);
break;
case PROP_MULTICAST_IFACE:
g_object_set_property (G_OBJECT (sink->rtp_sink),
"multicast-iface", value);
g_object_set_property (G_OBJECT (sink->rtcp_sink),
"multicast-iface", value);
break;
case PROP_MULTICAST_TTL:
g_object_set_property (G_OBJECT (sink->rtp_sink), "ttl-mc", value);
g_object_set_property (G_OBJECT (sink->rtcp_sink), "ttl-mc", value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_rist_sink_finalize (GObject * object)
{
GstRistSink *sink = GST_RIST_SINK (object);
g_clear_object (&sink->rtxbin);
G_OBJECT_CLASS (gst_rist_sink_parent_class)->finalize (object);
}
static void
gst_rist_sink_class_init (GstRistSinkClass * klass)
{
GstElementClass *element_class = (GstElementClass *) klass;
GObjectClass *object_class = (GObjectClass *) klass;
gst_element_class_set_metadata (element_class,
"RIST Sink", "Source/Network",
"Sink that implements RIST TR-06-1 streaming specification",
"Nicolas Dufresne <nicolas.dufresne@collabora.com");
gst_element_class_add_static_pad_template (element_class, &sink_templ);
element_class->change_state = gst_rist_sink_change_state;
object_class->get_property = gst_rist_sink_get_property;
object_class->set_property = gst_rist_sink_set_property;
object_class->finalize = gst_rist_sink_finalize;
g_object_class_install_property (object_class, PROP_ADDRESS,
g_param_spec_string ("address", "Address",
"Address to send packets to (can be IPv4 or IPv6).", "0.0.0.0",
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_PORT,
g_param_spec_uint ("port", "Port", "The port RTP packets will be sent, "
"RTCP port is derived from it, this port must be an even number.",
2, 65534, 5004,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_SENDER_BUFFER,
g_param_spec_uint ("sender-buffer", "Sender Buffer",
"Size of the retransmission queue in ms", 0, G_MAXUINT, 1200,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_MIN_RTCP_INTERVAL,
g_param_spec_uint ("min-rtcp-interval", "Minimum RTCP Intercal",
"The minimum interval in ms between two regular successive RTCP "
"packets.", 0, 100, 100,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_MAX_RTCP_BANDWIDTH,
g_param_spec_double ("max-rtcp-bandwidth", "Maximum RTCP Bandwidth",
"The maximum bandwidth used for RTCP in fraction of RTP bandwdith",
0.0, 0.05, 0.05,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_STATS_UPDATE_INTERVAL,
g_param_spec_uint ("stats-update-interval", "Statistics Update Interval",
"The interval between 'stats' update notification (0 disabled)",
0, G_MAXUINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_STATS,
g_param_spec_boxed ("stats", "Statistics",
"Statistic in a GstStructure named 'rist/x-sender-stats'",
GST_TYPE_STRUCTURE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_CNAME,
g_param_spec_string ("cname", "CName",
"Set the CNAME in the SDES block of the sender report.", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_MULTICAST_LOOPBACK,
g_param_spec_boolean ("multicast-loopback", "Multicast Loopback",
"When enabled, the packet will be received locally.", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_MULTICAST_IFACE,
g_param_spec_string ("multicast-iface", "multicast-iface",
"The multicast interface to use to send packets.", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_MULTICAST_TTL,
g_param_spec_int ("multicast-ttl", "Multicast TTL",
"The multicast time-to-live parameter.", 0, 255, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
}

1021
gst/rist/gstristsrc.c Normal file
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File diff suppressed because it is too large Load diff

17
gst/rist/meson.build Normal file
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@ -0,0 +1,17 @@
rist_sources = [
'gstristrtxsend.c',
'gstristrtxreceive.c',
'gstristsrc.c',
'gstristsink.c',
'gstristplugin.c',
]
gstrist = library('gstrist',
rist_sources,
c_args : gst_plugins_bad_args,
include_directories : [configinc],
dependencies : [gstrtp_dep, gstnet_dep, gio_dep],
install : true,
install_dir : plugins_install_dir,
)
pkgconfig.generate(gstrist, install_dir : plugins_pkgconfig_install_dir)

1
meson_options.txt
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@ -48,6 +48,7 @@ option('pnm', type : 'feature', value : 'auto')
option('proxy', type : 'feature', value : 'auto')
option('rawparse', type : 'feature', value : 'auto')
option('removesilence', type : 'feature', value : 'auto')
option('rist', type : 'feature', value : 'auto')
option('sdp', type : 'feature', value : 'auto')
option('segmentclip', type : 'feature', value : 'auto')
option('siren', type : 'feature', value : 'auto')