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/*************************************************************************/
/* WebRTCLibPeerConnection.hpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef WEBRTC_PEER_H
#define WEBRTC_PEER_H
#include <Godot.hpp> // Godot.hpp must go first, or windows builds breaks
#include "api/peer_connection_interface.h" // interface for all things needed from WebRTC
#include "media/base/media_engine.h" // needed for CreateModularPeerConnectionFactory
#include <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);
static std::unique_ptr<rtc::Thread> signaling_thread;
public:
static void _register_methods();
static void initialize_signaling();
static void deinitialize_signaling();
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 */
private:
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_packet(uint8_t *, int);
/** PeerConnectionObserver callback functions **/
class GodotPCO : public webrtc::PeerConnectionObserver {
public:
WebRTCLibPeerConnection *parent;
GodotPCO(WebRTCLibPeerConnection *p_parent) {
parent = p_parent;
}
void OnIceCandidate(const webrtc::IceCandidateInterface *candidate) override;
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 {}
};
/** CreateSessionDescriptionObserver callback functions **/
class GodotCSDO : public webrtc::CreateSessionDescriptionObserver {
public:
WebRTCLibPeerConnection *parent = nullptr;
GodotCSDO(WebRTCLibPeerConnection *p_parent) {
parent = p_parent;
}
void OnSuccess(webrtc::SessionDescriptionInterface *desc) override;
void OnFailure(webrtc::RTCError error) override {
ERR_PRINT(godot::String(error.message()));
}
};
/** SetSessionDescriptionObserver callback functions **/
class GodotSSDO : public webrtc::SetSessionDescriptionObserver {
public:
WebRTCLibPeerConnection *parent = nullptr;
bool make_offer = false;
GodotSSDO(WebRTCLibPeerConnection *p_parent) {
parent = p_parent;
}
void OnSuccess() override;
void OnFailure(webrtc::RTCError error) override {
make_offer = false;
ERR_PRINT(godot::String(error.message()));
}
};
class Signal {
godot::String method;
godot::Variant argv[3];
int argc = 0;
public:
Signal(godot::String p_method, int p_argc, const godot::Variant *p_argv) {
method = p_method;
argc = p_argc;
for (int i = 0; i < argc; i++) {
argv[i] = p_argv[i];
}
}
void emit(godot::Object *p_object) {
if (argc == 0) {
p_object->emit_signal(method);
} else if (argc == 1) {
p_object->emit_signal(method, argv[0]);
} else if (argc == 2) {
p_object->emit_signal(method, argv[0], argv[1]);
} else if (argc == 3) {
p_object->emit_signal(method, argv[0], argv[1], argv[2]);
}
}
};
GodotPCO pco;
rtc::scoped_refptr<GodotSSDO> ptr_ssdo;
rtc::scoped_refptr<GodotCSDO> ptr_csdo;
std::mutex *mutex_signal_queue = nullptr;
std::queue<Signal> signal_queue;
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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