/* GStreamer SRT plugin based on libsrt * Copyright (C) 2017, Collabora Ltd. * Author:Justin Kim * * 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 SRT * packets to the network. Although SRT is an UDP-based protocol, srtserversink works like * a server socket of connection-oriented protocol. * * * Examples * |[ * 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. * * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstsrtclientsink.h" #include "gstsrt.h" #include #include #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 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), FALSE, 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; 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 "); 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; }