diff options
Diffstat (limited to 'gst-libs/gst/webrtc/dtlstransport.c')
| -rw-r--r-- | gst-libs/gst/webrtc/dtlstransport.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/gst-libs/gst/webrtc/dtlstransport.c b/gst-libs/gst/webrtc/dtlstransport.c new file mode 100644 index 000000000..31324c34d --- /dev/null +++ b/gst-libs/gst/webrtc/dtlstransport.c @@ -0,0 +1,238 @@ +/* GStreamer + * Copyright (C) 2017 Matthew Waters <matthew@centricular.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:gstwebrtc-dtlstransport + * @short_description: RTCDtlsTransport object + * @title: GstWebRTCDTLSTransport + * @see_also: #GstWebRTCRTPSender, #GstWebRTCRTPReceiver, #GstWebRTCICETransport + * + * <ulink url="https://www.w3.org/TR/webrtc/#rtcdtlstransport">https://www.w3.org/TR/webrtc/#rtcdtlstransport</ulink> + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "dtlstransport.h" + +#define GST_CAT_DEFAULT gst_webrtc_dtls_transport_debug +GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); + +#define gst_webrtc_dtls_transport_parent_class parent_class +G_DEFINE_TYPE_WITH_CODE (GstWebRTCDTLSTransport, gst_webrtc_dtls_transport, + GST_TYPE_OBJECT, GST_DEBUG_CATEGORY_INIT (gst_webrtc_dtls_transport_debug, + "dtlstransport", 0, "dtlstransport"); + ); + +enum +{ + SIGNAL_0, + LAST_SIGNAL, +}; + +enum +{ + PROP_0, + PROP_SESSION_ID, + PROP_TRANSPORT, + PROP_STATE, + PROP_CLIENT, + PROP_CERTIFICATE, + PROP_REMOTE_CERTIFICATE, + PROP_RTCP, +}; + +void +gst_webrtc_dtls_transport_set_transport (GstWebRTCDTLSTransport * transport, + GstWebRTCICETransport * ice) +{ + g_return_if_fail (GST_IS_WEBRTC_DTLS_TRANSPORT (transport)); + g_return_if_fail (GST_IS_WEBRTC_ICE_TRANSPORT (ice)); + + gst_object_replace ((GstObject **) & transport->transport, GST_OBJECT (ice)); +} + +static void +gst_webrtc_dtls_transport_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); + + switch (prop_id) { + case PROP_SESSION_ID: + webrtc->session_id = g_value_get_uint (value); + break; + case PROP_CLIENT: + g_object_set_property (G_OBJECT (webrtc->dtlssrtpenc), "is-client", + value); + gst_element_set_locked_state (webrtc->dtlssrtpenc, FALSE); + gst_element_sync_state_with_parent (webrtc->dtlssrtpenc); + break; + case PROP_CERTIFICATE: + g_object_set_property (G_OBJECT (webrtc->dtlssrtpdec), "pem", value); + break; + case PROP_RTCP: + webrtc->is_rtcp = g_value_get_boolean (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_webrtc_dtls_transport_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); + + switch (prop_id) { + case PROP_SESSION_ID: + g_value_set_uint (value, webrtc->session_id); + break; + case PROP_TRANSPORT: + g_value_set_object (value, webrtc->transport); + break; + case PROP_STATE: + g_value_set_enum (value, webrtc->state); + break; + case PROP_CLIENT: + g_object_get_property (G_OBJECT (webrtc->dtlssrtpenc), "is-client", + value); + break; + case PROP_CERTIFICATE: + g_object_get_property (G_OBJECT (webrtc->dtlssrtpdec), "pem", value); + break; + case PROP_REMOTE_CERTIFICATE: + g_object_get_property (G_OBJECT (webrtc->dtlssrtpdec), "peer-pem", value); + break; + case PROP_RTCP: + g_value_set_boolean (value, webrtc->is_rtcp); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_webrtc_dtls_transport_finalize (GObject * object) +{ + GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); + + if (webrtc->transport) { + gst_object_unref (webrtc->transport); + } + webrtc->transport = NULL; + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static void +gst_webrtc_dtls_transport_constructed (GObject * object) +{ + GstWebRTCDTLSTransport *webrtc = GST_WEBRTC_DTLS_TRANSPORT (object); + gchar *connection_id; + + /* XXX: this may collide with another connection_id however this is only a + * problem if multiple dtls element sets are being used within the same + * process */ + connection_id = g_strdup_printf ("%s_%u_%u", webrtc->is_rtcp ? "rtcp" : "rtp", + webrtc->session_id, g_random_int ()); + + webrtc->dtlssrtpenc = gst_element_factory_make ("dtlssrtpenc", NULL); + g_object_set (webrtc->dtlssrtpenc, "connection-id", connection_id, + "is-client", webrtc->client, NULL); + + webrtc->dtlssrtpdec = gst_element_factory_make ("dtlssrtpdec", NULL); + g_object_set (webrtc->dtlssrtpdec, "connection-id", connection_id, NULL); + g_free (connection_id); + + G_OBJECT_CLASS (parent_class)->constructed (object); +} + +static void +gst_webrtc_dtls_transport_class_init (GstWebRTCDTLSTransportClass * klass) +{ + GObjectClass *gobject_class = (GObjectClass *) klass; + + gobject_class->constructed = gst_webrtc_dtls_transport_constructed; + gobject_class->get_property = gst_webrtc_dtls_transport_get_property; + gobject_class->set_property = gst_webrtc_dtls_transport_set_property; + gobject_class->finalize = gst_webrtc_dtls_transport_finalize; + + g_object_class_install_property (gobject_class, + PROP_SESSION_ID, + g_param_spec_uint ("session-id", "Session ID", + "Unique session ID", 0, G_MAXUINT, 0, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, + PROP_TRANSPORT, + g_param_spec_object ("transport", "ICE transport", + "ICE transport used by this dtls transport", + GST_TYPE_WEBRTC_ICE_TRANSPORT, + G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); + + /* FIXME: implement */ + g_object_class_install_property (gobject_class, + PROP_STATE, + g_param_spec_enum ("state", "DTLS state", + "State of the DTLS transport", + GST_TYPE_WEBRTC_DTLS_TRANSPORT_STATE, + GST_WEBRTC_DTLS_TRANSPORT_STATE_NEW, + G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, + PROP_CLIENT, + g_param_spec_boolean ("client", "DTLS client", + "Are we the client in the DTLS handshake?", FALSE, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, + PROP_CERTIFICATE, + g_param_spec_string ("certificate", "DTLS certificate", + "DTLS certificate", NULL, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, + PROP_REMOTE_CERTIFICATE, + g_param_spec_string ("remote-certificate", "Remote DTLS certificate", + "Remote DTLS certificate", NULL, + G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, + PROP_RTCP, + g_param_spec_boolean ("rtcp", "RTCP", + "The transport is being used solely for RTCP", FALSE, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); +} + +static void +gst_webrtc_dtls_transport_init (GstWebRTCDTLSTransport * webrtc) +{ +} + +GstWebRTCDTLSTransport * +gst_webrtc_dtls_transport_new (guint session_id, gboolean is_rtcp) +{ + return g_object_new (GST_TYPE_WEBRTC_DTLS_TRANSPORT, "session-id", session_id, + "rtcp", is_rtcp, NULL); +} |