gstreamer/ext/srt/gstsrtclientsink.c

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/* GStreamer SRT plugin based on libsrt
* Copyright (C) 2017, Collabora Ltd.
* Author:Justin Kim <justin.kim@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-srtserversink
* @title: srtserversink
*
* srtserversink is a network sink that sends <ulink url="http://www.srtalliance.org/">SRT</ulink>
* packets to the network. Although SRT is an UDP-based protocol, srtserversink works like
* a server socket of connection-oriented protocol.
*
* <refsect2>
* <title>Examples</title>
* |[
* gst-launch-1.0 -v audiotestsrc ! srtserversink
* ]| This pipeline shows how to serve SRT packets through the default port.
* |[
* gst-launch-1.0 -v audiotestsrc ! srtserversink uri=srt://192.168.1.10:8888/ rendez-vous=1
* ]| This pipeline shows how to serve SRT packets to 192.168.1.10 port 8888 using the rendez-vous mode.
* </refsect2>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstsrtclientsink.h"
#include "gstsrt.h"
#include <srt/srt.h>
#include <gio/gio.h>
#define SRT_DEFAULT_POLL_TIMEOUT -1
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
#define GST_CAT_DEFAULT gst_debug_srt_client_sink
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
struct _GstSRTClientSinkPrivate
{
SRTSOCKET sock;
GSocketAddress *sockaddr;
gint poll_id;
gint poll_timeout;
gboolean rendez_vous;
gchar *bind_address;
guint16 bind_port;
gboolean sent_headers;
};
#define GST_SRT_CLIENT_SINK_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_SRT_CLIENT_SINK, GstSRTClientSinkPrivate))
enum
{
PROP_POLL_TIMEOUT = 1,
PROP_BIND_ADDRESS,
PROP_BIND_PORT,
PROP_RENDEZ_VOUS,
PROP_STATS,
/*< private > */
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
#define gst_srt_client_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstSRTClientSink, gst_srt_client_sink,
GST_TYPE_SRT_BASE_SINK, G_ADD_PRIVATE (GstSRTClientSink)
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "srtclientsink", 0,
"SRT Client Sink"));
static void
gst_srt_client_sink_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (object);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
switch (prop_id) {
case PROP_POLL_TIMEOUT:
g_value_set_int (value, priv->poll_timeout);
break;
case PROP_BIND_PORT:
g_value_set_int (value, priv->bind_port);
break;
case PROP_BIND_ADDRESS:
g_value_set_string (value, priv->bind_address);
break;
case PROP_RENDEZ_VOUS:
g_value_set_boolean (value, priv->rendez_vous);
break;
case PROP_STATS:
g_value_take_boxed (value, gst_srt_base_sink_get_stats (priv->sockaddr,
priv->sock));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_srt_client_sink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (object);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
switch (prop_id) {
case PROP_POLL_TIMEOUT:
priv->poll_timeout = g_value_get_int (value);
break;
case PROP_BIND_ADDRESS:
g_free (priv->bind_address);
priv->bind_address = g_value_dup_string (value);
break;
case PROP_BIND_PORT:
priv->bind_port = g_value_get_int (value);
break;
case PROP_RENDEZ_VOUS:
priv->rendez_vous = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_srt_client_sink_finalize (GObject * object)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (object);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
g_free (priv->bind_address);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_srt_client_sink_start (GstBaseSink * sink)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (sink);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
GstSRTBaseSink *base = GST_SRT_BASE_SINK (sink);
GstUri *uri = gst_uri_ref (GST_SRT_BASE_SINK (self)->uri);
priv->sock = gst_srt_client_connect (GST_ELEMENT (sink), TRUE,
gst_uri_get_host (uri), gst_uri_get_port (uri), priv->rendez_vous,
priv->bind_address, priv->bind_port, base->latency,
&priv->sockaddr, &priv->poll_id, base->passphrase, base->key_length);
g_clear_pointer (&uri, gst_uri_unref);
return (priv->sock != SRT_INVALID_SOCK);
}
static gboolean
send_buffer_internal (GstSRTBaseSink * sink,
const GstMapInfo * mapinfo, gpointer user_data)
{
SRTSOCKET sock = GPOINTER_TO_INT (user_data);
if (srt_sendmsg2 (sock, (char *) mapinfo->data, mapinfo->size,
0) == SRT_ERROR) {
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, NULL,
("%s", srt_getlasterror_str ()));
return FALSE;
}
return TRUE;
}
static gboolean
gst_srt_client_sink_send_buffer (GstSRTBaseSink * sink,
const GstMapInfo * mapinfo)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (sink);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
if (!priv->sent_headers) {
if (!gst_srt_base_sink_send_headers (sink, send_buffer_internal,
GINT_TO_POINTER (priv->sock)))
return FALSE;
priv->sent_headers = TRUE;
}
return send_buffer_internal (sink, mapinfo, GINT_TO_POINTER (priv->sock));
}
static gboolean
gst_srt_client_sink_stop (GstBaseSink * sink)
{
GstSRTClientSink *self = GST_SRT_CLIENT_SINK (sink);
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
GST_DEBUG_OBJECT (self, "closing SRT connection");
if (priv->poll_id != SRT_ERROR) {
srt_epoll_remove_usock (priv->poll_id, priv->sock);
srt_epoll_release (priv->poll_id);
priv->poll_id = SRT_ERROR;
}
if (priv->sock != SRT_INVALID_SOCK) {
srt_close (priv->sock);
priv->sock = SRT_INVALID_SOCK;
}
g_clear_object (&priv->sockaddr);
priv->sent_headers = FALSE;
return GST_BASE_SINK_CLASS (parent_class)->stop (sink);
}
static void
gst_srt_client_sink_class_init (GstSRTClientSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (klass);
GstSRTBaseSinkClass *gstsrtbasesink_class = GST_SRT_BASE_SINK_CLASS (klass);
gobject_class->set_property = gst_srt_client_sink_set_property;
gobject_class->get_property = gst_srt_client_sink_get_property;
gobject_class->finalize = gst_srt_client_sink_finalize;
properties[PROP_POLL_TIMEOUT] =
g_param_spec_int ("poll-timeout", "Poll Timeout",
"Return poll wait after timeout miliseconds (-1 = infinite)", -1,
G_MAXINT32, SRT_DEFAULT_POLL_TIMEOUT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_BIND_ADDRESS] =
g_param_spec_string ("bind-address", "Bind Address",
"Address to bind socket to (required for rendez-vous mode) ", NULL,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS);
properties[PROP_BIND_PORT] =
g_param_spec_int ("bind-port", "Bind Port",
"Port to bind socket to (Ignored in rendez-vous mode)", 0,
G_MAXUINT16, 0,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS);
properties[PROP_RENDEZ_VOUS] =
g_param_spec_boolean ("rendez-vous", "Rendez Vous",
"Work in Rendez-Vous mode instead of client/caller mode", FALSE,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS);
properties[PROP_STATS] = g_param_spec_boxed ("stats", "Statistics",
"SRT Statistics", GST_TYPE_STRUCTURE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, PROP_LAST, properties);
gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
gst_element_class_set_metadata (gstelement_class,
"SRT client sink", "Sink/Network",
"Send data over the network via SRT",
"Justin Kim <justin.kim@collabora.com>");
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_srt_client_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_srt_client_sink_stop);
gstsrtbasesink_class->send_buffer =
GST_DEBUG_FUNCPTR (gst_srt_client_sink_send_buffer);
}
static void
gst_srt_client_sink_init (GstSRTClientSink * self)
{
GstSRTClientSinkPrivate *priv = GST_SRT_CLIENT_SINK_GET_PRIVATE (self);
priv->poll_timeout = SRT_DEFAULT_POLL_TIMEOUT;
}