1 files changed, 114 insertions, 0 deletions

diff --git a/xbmc/utils/ActorProtocol.h b/xbmc/utils/ActorProtocol.h
new file mode 100644
index 0000000..97297a6
--- /dev/null
+++ b/xbmc/utils/ActorProtocol.h
@@ -0,0 +1,114 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: LGPL-2.1-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "threads/CriticalSection.h"
+
+#include <cstddef>
+#include <memory>
+#include <queue>
+#include <string>
+
+class CEvent;
+
+namespace Actor
+{
+
+class CPayloadWrapBase
+{
+public:
+  virtual ~CPayloadWrapBase() = default;
+};
+
+template<typename Payload>
+class CPayloadWrap : public CPayloadWrapBase
+{
+public:
+  ~CPayloadWrap() override = default;
+  CPayloadWrap(Payload *data) {m_pPayload.reset(data);};
+  CPayloadWrap(Payload &data) {m_pPayload.reset(new Payload(data));};
+  Payload *GetPlayload() {return m_pPayload.get();};
+protected:
+  std::unique_ptr<Payload> m_pPayload;
+};
+
+class Protocol;
+
+class Message
+{
+  friend class Protocol;
+
+  static constexpr size_t MSG_INTERNAL_BUFFER_SIZE = 32;
+
+public:
+  int signal;
+  bool isSync = false;
+  bool isSyncFini;
+  bool isOut;
+  bool isSyncTimeout;
+  size_t payloadSize;
+  uint8_t buffer[MSG_INTERNAL_BUFFER_SIZE];
+  uint8_t *data = nullptr;
+  std::unique_ptr<CPayloadWrapBase> payloadObj;
+  Message *replyMessage = nullptr;
+  Protocol &origin;
+  CEvent *event = nullptr;
+
+  void Release();
+  bool Reply(int sig, void *data = nullptr, size_t size = 0);
+
+private:
+  explicit Message(Protocol &_origin) noexcept
+    :origin(_origin) {}
+};
+
+class Protocol
+{
+public:
+  Protocol(std::string name, CEvent* inEvent, CEvent *outEvent)
+    :portName(name), containerInEvent(inEvent), containerOutEvent(outEvent) {}
+  Protocol(std::string name)
+    : Protocol(name, nullptr, nullptr) {}
+  ~Protocol();
+  Message *GetMessage();
+  void ReturnMessage(Message *msg);
+  bool SendOutMessage(int signal,
+                      const void* data = nullptr,
+                      size_t size = 0,
+                      Message* outMsg = nullptr);
+  bool SendOutMessage(int signal, CPayloadWrapBase *payload, Message *outMsg = nullptr);
+  bool SendInMessage(int signal,
+                     const void* data = nullptr,
+                     size_t size = 0,
+                     Message* outMsg = nullptr);
+  bool SendInMessage(int signal, CPayloadWrapBase *payload, Message *outMsg = nullptr);
+  bool SendOutMessageSync(
+      int signal, Message** retMsg, int timeout, const void* data = nullptr, size_t size = 0);
+  bool SendOutMessageSync(int signal, Message **retMsg, int timeout, CPayloadWrapBase *payload);
+  bool ReceiveOutMessage(Message **msg);
+  bool ReceiveInMessage(Message **msg);
+  void Purge();
+  void PurgeIn(int signal);
+  void PurgeOut(int signal);
+  void DeferIn(bool value) {inDefered = value;};
+  void DeferOut(bool value) {outDefered = value;};
+  void Lock() {criticalSection.lock();};
+  void Unlock() {criticalSection.unlock();};
+  std::string portName;
+
+protected:
+  CEvent *containerInEvent, *containerOutEvent;
+  CCriticalSection criticalSection;
+  std::queue<Message*> outMessages;
+  std::queue<Message*> inMessages;
+  std::queue<Message*> freeMessageQueue;
+  bool inDefered = false, outDefered = false;
+};
+
+}