From 3e64a42b1492e38bf033041c0eb1212542728cbd Mon Sep 17 00:00:00 2001
From: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>
Date: Sun, 21 Apr 2019 04:57:53 +0200
Subject: Update to new DataChannel API.

New WebRTCLibDataChannel class act as PacketPeer.
Old WebRTCPeer (now WebRTCPeerConnection) now allows you to set
configuration (STUN/TURN) and creating multiple data channels.
Fixed many bugs and implemented most of the missing API.
---
 src/WebRTCLibPeerConnection.hpp | 96 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 src/WebRTCLibPeerConnection.hpp

(limited to 'src/WebRTCLibPeerConnection.hpp')

diff --git a/src/WebRTCLibPeerConnection.hpp b/src/WebRTCLibPeerConnection.hpp
new file mode 100644
index 0000000..b46d606
--- /dev/null
+++ b/src/WebRTCLibPeerConnection.hpp
@@ -0,0 +1,96 @@
+#ifndef WEBRTC_PEER_H
+#define WEBRTC_PEER_H
+
+#include <Godot.hpp> // Godot.hpp must go first, or windows builds breaks
+
+#include "api/peerconnectioninterface.h" // interface for all things needed from WebRTC
+#include "media/base/mediaengine.h" // needed for CreateModularPeerConnectionFactory
+#include <functional> // std::function
+#include <mutex> // mutex @TODO replace std::mutex with Godot mutex
+
+#include "net/WebRTCPeerConnectionNative.hpp"
+
+namespace godot_webrtc {
+
+class WebRTCLibPeerConnection : public WebRTCPeerConnectionNative {
+	GODOT_CLASS(WebRTCLibPeerConnection, WebRTCPeerConnectionNative);
+
+private:
+	godot_error _create_pc(webrtc::PeerConnectionInterface::RTCConfiguration &config);
+
+public:
+	static void _register_methods();
+
+	void _init();
+
+	ConnectionState get_connection_state() const;
+
+	godot_error initialize(const godot_dictionary *p_config);
+	godot_object *create_data_channel(const char *p_channel, const godot_dictionary *p_channel_config);
+	godot_error create_offer();
+	godot_error set_remote_description(const char *type, const char *sdp);
+	godot_error set_local_description(const char *type, const char *sdp);
+	godot_error add_ice_candidate(const char *sdpMidName, int sdpMlineIndexName, const char *sdpName);
+	godot_error poll();
+	void close();
+
+	WebRTCLibPeerConnection();
+	~WebRTCLibPeerConnection();
+
+	/* helper functions */
+
+	void queue_signal(godot::String p_name, int p_argc, const godot::Variant &p_arg1 = godot::Variant(), const godot::Variant &p_arg2 = godot::Variant(), const godot::Variant &p_arg3 = godot::Variant());
+	// void queue_signal(godot::StringName p_name, Variant_ARG_LIST);
+	void queue_packet(uint8_t *, int);
+
+	/** PeerConnectionObserver callback functions **/
+	class GodotPCO : public webrtc::PeerConnectionObserver {
+	public:
+		WebRTCLibPeerConnection *parent;
+
+		GodotPCO(WebRTCLibPeerConnection *parent);
+		void OnSignalingChange(webrtc::PeerConnectionInterface::SignalingState new_state) override;
+		void OnAddStream(rtc::scoped_refptr<webrtc::MediaStreamInterface> stream) override;
+		void OnRemoveStream(rtc::scoped_refptr<webrtc::MediaStreamInterface> stream) override;
+		void OnDataChannel(rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel) override;
+		void OnRenegotiationNeeded() override;
+		void OnIceConnectionChange(webrtc::PeerConnectionInterface::IceConnectionState new_state) override;
+		void OnIceGatheringChange(webrtc::PeerConnectionInterface::IceGatheringState new_state) override;
+		void OnIceCandidate(const webrtc::IceCandidateInterface *candidate) override;
+	};
+
+	/** CreateSessionDescriptionObserver callback functions **/
+	class GodotCSDO : public webrtc::CreateSessionDescriptionObserver {
+	public:
+		WebRTCLibPeerConnection *parent;
+
+		GodotCSDO(WebRTCLibPeerConnection *parent);
+		void OnSuccess(webrtc::SessionDescriptionInterface *desc) override;
+		void OnFailure(const std::string &error) override;
+	};
+
+	/** SetSessionDescriptionObserver callback functions **/
+	class GodotSSDO : public webrtc::SetSessionDescriptionObserver {
+	public:
+		WebRTCLibPeerConnection *parent;
+
+		GodotSSDO(WebRTCLibPeerConnection *parent);
+		void OnSuccess() override;
+		void OnFailure(const std::string &error) override;
+	};
+
+	GodotPCO pco;
+	rtc::scoped_refptr<GodotSSDO> ptr_ssdo;
+	rtc::scoped_refptr<GodotCSDO> ptr_csdo;
+
+	std::mutex *mutex_signal_queue;
+	std::queue<std::function<void()> > signal_queue;
+
+	rtc::Thread *signaling_thread;
+	rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface> pc_factory;
+	rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection;
+};
+
+} // namespace godot_webrtc
+
+#endif // WEBRTC_PEER_H
-- 
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