source/backend/CarlaHostImpl.hpp

   1 /*
   2  * Carla Plugin Host
   3  * Copyright (C) 2011-2022 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  16  */
  17
  18 #ifndef CARLA_HOST_IMPL_HPP_INCLUDED
  19 #define CARLA_HOST_IMPL_HPP_INCLUDED
  20
  21 #include "CarlaHost.h"
  22 #include "CarlaUtils.h"
  23 #include "CarlaEngine.hpp"
  24
  25 #if !(defined(BUILD_BRIDGE) || defined(CARLA_OS_WASM))
  26 # define CARLA_CAN_USE_LOG_THREAD
  27 # include "CarlaLogThread.hpp"
  28 #else
  29 # include "CarlaString.hpp"
  30 #endif
  31
  32 namespace CB = CARLA_BACKEND_NAMESPACE;
  33 using CB::EngineOptions;
  34
  35 // --------------------------------------------------------------------------------------------------------------------
  36 // Shared code, WIP
  37
  38 typedef struct _CarlaHostHandle {
  39     // required pointers
  40     CarlaEngine* engine;
  41
  42     // flags
  43     bool isStandalone : 1;
  44     bool isPlugin     : 1;
  45
  46     _CarlaHostHandle() noexcept
  47         : engine(nullptr),
  48           isStandalone(false),
  49           isPlugin(false) {}
  50 } CarlaHostHandleImpl;
  51
  52 // --------------------------------------------------------------------------------------------------------------------
  53 // Single, standalone engine
  54
  55 struct CarlaHostStandalone : CarlaHostHandleImpl {
  56     EngineCallbackFunc engineCallback;
  57     void*              engineCallbackPtr;
  58     FileCallbackFunc   fileCallback;
  59     void*              fileCallbackPtr;
  60
  61     EngineOptions  engineOptions;
  62 #ifdef CARLA_CAN_USE_LOG_THREAD
  63     CarlaLogThread logThread;
  64     bool           logThreadEnabled;
  65 #endif
  66
  67     CarlaString lastError;
  68
  69     CarlaHostStandalone() noexcept
  70         : CarlaHostHandleImpl(),
  71           engineCallback(nullptr),
  72           engineCallbackPtr(nullptr),
  73           fileCallback(nullptr),
  74           fileCallbackPtr(nullptr),
  75           engineOptions(),
  76 #ifdef CARLA_CAN_USE_LOG_THREAD
  77           logThread(),
  78           logThreadEnabled(false),
  79 #endif
  80           lastError()
  81     {
  82         isStandalone = true;
  83     }
  84
  85     ~CarlaHostStandalone() noexcept
  86     {
  87         CARLA_SAFE_ASSERT(engine == nullptr);
  88     }
  89
  90     CARLA_PREVENT_HEAP_ALLOCATION
  91     CARLA_DECLARE_NON_COPYABLE(CarlaHostStandalone)
  92 };
  93
  94 // --------------------------------------------------------------------------------------------------------------------
  95
  96 #endif // CARLA_HOST_IMPL_HPP_INCLUDED