From b9e6cc8f4fd89901307a72e270ad1fcf426ad995 Mon Sep 17 00:00:00 2001
From: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>
Date: Sat, 28 Aug 2021 17:04:22 +0200
Subject: [Net] Enable PacketPeer native extensions.

---
 core/io/packet_peer.cpp      | 46 ++++++++++++++++++++++++++++++++++++++++++++
 core/io/packet_peer.h        | 23 ++++++++++++++++++++++
 core/register_core_types.cpp |  1 +
 core/variant/native_ptr.h    |  1 +
 4 files changed, 71 insertions(+)

(limited to 'core')

diff --git a/core/io/packet_peer.cpp b/core/io/packet_peer.cpp
index 8da44fd290..87d2b66e5b 100644
--- a/core/io/packet_peer.cpp
+++ b/core/io/packet_peer.cpp
@@ -138,6 +138,7 @@ Error PacketPeer::_get_packet_error() const {
 void PacketPeer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_var", "allow_objects"), &PacketPeer::_bnd_get_var, DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("put_var", "var", "full_objects"), &PacketPeer::put_var, DEFVAL(false));
+
 	ClassDB::bind_method(D_METHOD("get_packet"), &PacketPeer::_get_packet);
 	ClassDB::bind_method(D_METHOD("put_packet", "buffer"), &PacketPeer::_put_packet);
 	ClassDB::bind_method(D_METHOD("get_packet_error"), &PacketPeer::_get_packet_error);
@@ -151,6 +152,51 @@ void PacketPeer::_bind_methods() {
 
 /***************/
 
+int PacketPeerExtension::get_available_packet_count() const {
+	int count;
+	if (GDVIRTUAL_CALL(_get_available_packet_count, count)) {
+		return count;
+	}
+	WARN_PRINT_ONCE("PacketPeerExtension::_get_available_packet_count is unimplemented!");
+	return -1;
+}
+
+Error PacketPeerExtension::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
+	int err;
+	if (GDVIRTUAL_CALL(_get_packet, r_buffer, &r_buffer_size, err)) {
+		return (Error)err;
+	}
+	WARN_PRINT_ONCE("PacketPeerExtension::_get_packet_native is unimplemented!");
+	return FAILED;
+}
+
+Error PacketPeerExtension::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
+	int err;
+	if (GDVIRTUAL_CALL(_put_packet, p_buffer, p_buffer_size, err)) {
+		return (Error)err;
+	}
+	WARN_PRINT_ONCE("PacketPeerExtension::_put_packet_native is unimplemented!");
+	return FAILED;
+}
+
+int PacketPeerExtension::get_max_packet_size() const {
+	int size;
+	if (GDVIRTUAL_CALL(_get_max_packet_size, size)) {
+		return size;
+	}
+	WARN_PRINT_ONCE("PacketPeerExtension::_get_max_packet_size is unimplemented!");
+	return 0;
+}
+
+void PacketPeerExtension::_bind_methods() {
+	GDVIRTUAL_BIND(_get_packet, "r_buffer", "r_buffer_size");
+	GDVIRTUAL_BIND(_put_packet, "p_buffer", "p_buffer_size");
+	GDVIRTUAL_BIND(_get_available_packet_count);
+	GDVIRTUAL_BIND(_get_max_packet_size);
+}
+
+/***************/
+
 void PacketPeerStream::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_stream_peer", "peer"), &PacketPeerStream::set_stream_peer);
 	ClassDB::bind_method(D_METHOD("get_stream_peer"), &PacketPeerStream::get_stream_peer);
diff --git a/core/io/packet_peer.h b/core/io/packet_peer.h
index 9a345af3d0..bc1f4aaabf 100644
--- a/core/io/packet_peer.h
+++ b/core/io/packet_peer.h
@@ -35,6 +35,10 @@
 #include "core/object/class_db.h"
 #include "core/templates/ring_buffer.h"
 
+#include "core/object/gdvirtual.gen.inc"
+#include "core/object/script_language.h"
+#include "core/variant/native_ptr.h"
+
 class PacketPeer : public RefCounted {
 	GDCLASS(PacketPeer, RefCounted);
 
@@ -73,6 +77,25 @@ public:
 	~PacketPeer() {}
 };
 
+class PacketPeerExtension : public PacketPeer {
+	GDCLASS(PacketPeerExtension, PacketPeer);
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual int get_available_packet_count() const override;
+	virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size) override; ///< buffer is GONE after next get_packet
+	virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size) override;
+	virtual int get_max_packet_size() const override;
+
+	/* GDExtension */
+	GDVIRTUAL0RC(int, _get_available_packet_count);
+	GDVIRTUAL2R(int, _get_packet, GDNativeConstPtr<const uint8_t *>, GDNativePtr<int>);
+	GDVIRTUAL2R(int, _put_packet, GDNativeConstPtr<const uint8_t>, int);
+	GDVIRTUAL0RC(int, _get_max_packet_size);
+};
+
 class PacketPeerStream : public PacketPeer {
 	GDCLASS(PacketPeerStream, PacketPeer);
 
diff --git a/core/register_core_types.cpp b/core/register_core_types.cpp
index 3a037f9dd1..3db1434c73 100644
--- a/core/register_core_types.cpp
+++ b/core/register_core_types.cpp
@@ -174,6 +174,7 @@ void register_core_types() {
 	GDREGISTER_CLASS(TCPServer);
 
 	GDREGISTER_VIRTUAL_CLASS(PacketPeer);
+	GDREGISTER_CLASS(PacketPeerExtension);
 	GDREGISTER_CLASS(PacketPeerStream);
 	GDREGISTER_CLASS(PacketPeerUDP);
 	GDREGISTER_CLASS(UDPServer);
diff --git a/core/variant/native_ptr.h b/core/variant/native_ptr.h
index b4ec0df7d6..b7e8d92f62 100644
--- a/core/variant/native_ptr.h
+++ b/core/variant/native_ptr.h
@@ -117,6 +117,7 @@ GDVIRTUAL_NATIVE_PTR(char16_t)
 GDVIRTUAL_NATIVE_PTR(char32_t)
 GDVIRTUAL_NATIVE_PTR(wchar_t)
 GDVIRTUAL_NATIVE_PTR(uint8_t)
+GDVIRTUAL_NATIVE_PTR(uint8_t *)
 GDVIRTUAL_NATIVE_PTR(int8_t)
 GDVIRTUAL_NATIVE_PTR(uint16_t)
 GDVIRTUAL_NATIVE_PTR(int16_t)
-- 
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