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Audio plugin host https://kx.studio/carla
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Carla/source/backend/engine/CarlaEngineBridge.cpp

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  1. /*

  2.  * Carla Plugin Host

  3.  * Copyright (C) 2011-2014 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 BUILD_BRIDGE

  19. # error This file should not be compiled if not building bridge

  20. #endif

  21. 

  22. #include "CarlaEngineInternal.hpp"

  23. #include "CarlaPlugin.hpp"

  24. 

  25. #include "CarlaBackendUtils.hpp"

  26. #include "CarlaBase64Utils.hpp"

  27. #include "CarlaBridgeUtils.hpp"

  28. #include "CarlaMIDI.h"

  29. 

  30. #include "jackbridge/JackBridge.hpp"

  31. 

  32. using juce::File;

  33. using juce::MemoryBlock;

  34. using juce::String;

  35. 

  36. template<typename T>

  37. bool jackbridge_shm_map2(char* shm, T*& value) noexcept

  38. {

  39.     value = (T*)jackbridge_shm_map(shm, sizeof(T));

  40.     return (value != nullptr);

  41. }

  42. 

  43. CARLA_BACKEND_START_NAMESPACE

  44. 

  45. // -------------------------------------------------------------------

  46. 

  47. struct BridgeAudioPool {

  48.     CarlaString filename;

  49.     float* data;

  50.     char shm[64];

  51. 

  52.     BridgeAudioPool() noexcept

  53.         : filename(),

  54.           data(nullptr)

  55.     {

  56.         carla_zeroChar(shm, 64);

  57.         jackbridge_shm_init(shm);

  58.     }

  59. 

  60.     ~BridgeAudioPool() noexcept

  61.     {

  62.         // should be cleared by now

  63.         CARLA_SAFE_ASSERT(data == nullptr);

  64. 

  65.         clear();

  66.     }

  67. 

  68.     void clear() noexcept

  69.     {

  70.         filename.clear();

  71. 

  72.         if (! jackbridge_shm_is_valid(shm))

  73.         {

  74.             CARLA_SAFE_ASSERT(data == nullptr);

  75.             return;

  76.         }

  77. 

  78.         data = nullptr;

  79. 

  80.         jackbridge_shm_close(shm);

  81.         jackbridge_shm_init(shm);

  82.     }

  83. 

  84.     bool attach() noexcept

  85.     {

  86.         // must be invalid right now

  87.         CARLA_SAFE_ASSERT_RETURN(! jackbridge_shm_is_valid(shm), false);

  88. 

  89.         jackbridge_shm_attach(shm, filename);

  90. 

  91.         return jackbridge_shm_is_valid(shm);

  92.     }

  93. 

  94.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeAudioPool)

  95. };

  96. 

  97. // -------------------------------------------------------------------

  98. 

  99. struct BridgeRtClientControl : public CarlaRingBufferControl<SmallStackBuffer> {

  100.     CarlaString filename;

  101.     BridgeRtClientData* data;

  102.     char shm[64];

  103. 

  104.     BridgeRtClientControl() noexcept

  105.         : filename(),

  106.           data(nullptr)

  107.     {

  108.         carla_zeroChar(shm, 64);

  109.         jackbridge_shm_init(shm);

  110.     }

  111. 

  112.     ~BridgeRtClientControl() noexcept override

  113.     {

  114.         // should be cleared by now

  115.         CARLA_SAFE_ASSERT(data == nullptr);

  116. 

  117.         clear();

  118.     }

  119. 

  120.     void clear() noexcept

  121.     {

  122.         filename.clear();

  123. 

  124.         if (data != nullptr)

  125.             unmapData();

  126. 

  127.         if (! jackbridge_shm_is_valid(shm))

  128.             return;

  129. 

  130.         jackbridge_shm_close(shm);

  131.         jackbridge_shm_init(shm);

  132.     }

  133. 

  134.     bool attach() noexcept

  135.     {

  136.         // must be invalid right now

  137.         CARLA_SAFE_ASSERT_RETURN(! jackbridge_shm_is_valid(shm), false);

  138. 

  139.         jackbridge_shm_attach(shm, filename);

  140. 

  141.         return jackbridge_shm_is_valid(shm);

  142.     }

  143. 

  144.     bool mapData() noexcept

  145.     {

  146.         CARLA_SAFE_ASSERT(data == nullptr);

  147. 

  148.         if (jackbridge_shm_map2<BridgeRtClientData>(shm, data))

  149.         {

  150.             CARLA_SAFE_ASSERT(data->midiOut[0] == 0);

  151.             setRingBuffer(&data->ringBuffer, false);

  152.             return true;

  153.         }

  154. 

  155.         return false;

  156.     }

  157. 

  158.     void unmapData() noexcept

  159.     {

  160.         data = nullptr;

  161.         setRingBuffer(nullptr, false);

  162.     }

  163. 

  164.     bool postClient() noexcept

  165.     {

  166.         CARLA_SAFE_ASSERT_RETURN(data != nullptr, false);

  167. 

  168.         return jackbridge_sem_post(&data->sem.client);

  169.     }

  170. 

  171.     bool waitForServer(const uint secs) noexcept

  172.     {

  173.         CARLA_SAFE_ASSERT_RETURN(data != nullptr, false);

  174. 

  175.         return jackbridge_sem_timedwait(&data->sem.server, secs);

  176.     }

  177. 

  178.     PluginBridgeRtClientOpcode readOpcode() noexcept

  179.     {

  180.         return static_cast<PluginBridgeRtClientOpcode>(readUInt());

  181.     }

  182. 

  183.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeRtClientControl)

  184. };

  185. 

  186. // -------------------------------------------------------------------

  187. 

  188. struct BridgeNonRtClientControl : public CarlaRingBufferControl<BigStackBuffer> {

  189.     CarlaString filename;

  190.     BridgeNonRtClientData* data;

  191.     char shm[64];

  192. 

  193.     BridgeNonRtClientControl() noexcept

  194.         : filename(),

  195.           data(nullptr)

  196.     {

  197.         carla_zeroChar(shm, 64);

  198.         jackbridge_shm_init(shm);

  199.     }

  200. 

  201.     ~BridgeNonRtClientControl() noexcept override

  202.     {

  203.         // should be cleared by now

  204.         CARLA_SAFE_ASSERT(data == nullptr);

  205. 

  206.         clear();

  207.     }

  208. 

  209.     void clear() noexcept

  210.     {

  211.         filename.clear();

  212. 

  213.         if (data != nullptr)

  214.             unmapData();

  215. 

  216.         if (! jackbridge_shm_is_valid(shm))

  217.         {

  218.             CARLA_SAFE_ASSERT(data == nullptr);

  219.             return;

  220.         }

  221. 

  222.         jackbridge_shm_close(shm);

  223.         jackbridge_shm_init(shm);

  224.     }

  225. 

  226.     bool attach() noexcept

  227.     {

  228.         // must be invalid right now

  229.         CARLA_SAFE_ASSERT_RETURN(! jackbridge_shm_is_valid(shm), false);

  230. 

  231.         jackbridge_shm_attach(shm, filename);

  232. 

  233.         return jackbridge_shm_is_valid(shm);

  234.     }

  235. 

  236.     bool mapData() noexcept

  237.     {

  238.         CARLA_SAFE_ASSERT(data == nullptr);

  239. 

  240.         if (jackbridge_shm_map2<BridgeNonRtClientData>(shm, data))

  241.         {

  242.             setRingBuffer(&data->ringBuffer, false);

  243.             return true;

  244.         }

  245. 

  246.         return false;

  247.     }

  248. 

  249.     void unmapData() noexcept

  250.     {

  251.         data = nullptr;

  252.         setRingBuffer(nullptr, false);

  253.     }

  254. 

  255.     PluginBridgeNonRtClientOpcode readOpcode() noexcept

  256.     {

  257.         return static_cast<PluginBridgeNonRtClientOpcode>(readUInt());

  258.     }

  259. 

  260.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtClientControl)

  261. };

  262. 

  263. // -------------------------------------------------------------------

  264. 

  265. struct BridgeNonRtServerControl : public CarlaRingBufferControl<HugeStackBuffer> {

  266.     CarlaMutex mutex;

  267.     CarlaString filename;

  268.     BridgeNonRtServerData* data;

  269.     char shm[64];

  270. 

  271.     BridgeNonRtServerControl() noexcept

  272.         :  mutex(),

  273.           filename(),

  274.           data(nullptr)

  275.     {

  276.         carla_zeroChar(shm, 64);

  277.         jackbridge_shm_init(shm);

  278.     }

  279. 

  280.     ~BridgeNonRtServerControl() noexcept override

  281.     {

  282.         // should be cleared by now

  283.         CARLA_SAFE_ASSERT(data == nullptr);

  284. 

  285.         clear();

  286.     }

  287. 

  288.     void clear() noexcept

  289.     {

  290.         filename.clear();

  291. 

  292.         if (data != nullptr)

  293.             unmapData();

  294. 

  295.         if (! jackbridge_shm_is_valid(shm))

  296.         {

  297.             CARLA_SAFE_ASSERT(data == nullptr);

  298.             return;

  299.         }

  300. 

  301.         jackbridge_shm_close(shm);

  302.         jackbridge_shm_init(shm);

  303.     }

  304. 

  305.     bool attach() noexcept

  306.     {

  307.         // must be invalid right now

  308.         CARLA_SAFE_ASSERT_RETURN(! jackbridge_shm_is_valid(shm), false);

  309. 

  310.         jackbridge_shm_attach(shm, filename);

  311. 

  312.         return jackbridge_shm_is_valid(shm);

  313.     }

  314. 

  315.     bool mapData() noexcept

  316.     {

  317.         CARLA_SAFE_ASSERT(data == nullptr);

  318. 

  319.         if (jackbridge_shm_map2<BridgeNonRtServerData>(shm, data))

  320.         {

  321.             setRingBuffer(&data->ringBuffer, false);

  322.             return true;

  323.         }

  324. 

  325.         return false;

  326.     }

  327. 

  328.     void unmapData() noexcept

  329.     {

  330.         data = nullptr;

  331.         setRingBuffer(nullptr, false);

  332.     }

  333. 

  334.     void writeOpcode(const PluginBridgeNonRtServerOpcode opcode) noexcept

  335.     {

  336.         writeUInt(static_cast<uint32_t>(opcode));

  337.     }

  338. 

  339.     void waitIfDataIsReachingLimit() const noexcept

  340.     {

  341.         if (getAvailableDataSize() < HugeStackBuffer::size/4)

  342.             return;

  343. 

  344.         for (int i=50; --i >= 0;)

  345.         {

  346.             if (getAvailableDataSize() >= HugeStackBuffer::size*3/4)

  347.                 break;

  348.             carla_msleep(20);

  349.         }

  350.     }

  351. 

  352.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtServerControl)

  353. };

  354. 

  355. // -------------------------------------------------------------------

  356. 

  357. class CarlaEngineBridge : public CarlaEngine,

  358.                           public CarlaThread

  359. {

  360. public:

  361.     CarlaEngineBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  362.         : CarlaEngine(),

  363.           CarlaThread("CarlaEngineBridge"),

  364.           fShmAudioPool(),

  365.           fShmRtClientControl(),

  366.           fShmNonRtClientControl(),

  367.           fShmNonRtServerControl(),

  368.           fIsOffline(false),

  369.           fFirstIdle(true),

  370.           fLastPingCounter(-1),

  371.           leakDetector_CarlaEngineBridge()

  372.     {

  373.         carla_stdout("CarlaEngineBridge::CarlaEngineBridge(\"%s\", \"%s\", \"%s\", \"%s\")", audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  374. 

  375.         fShmAudioPool.filename  = PLUGIN_BRIDGE_NAMEPREFIX_AUDIO_POOL;

  376.         fShmAudioPool.filename += audioPoolBaseName;

  377. 

  378.         fShmRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_RT_CLIENT;

  379.         fShmRtClientControl.filename += rtClientBaseName;

  380. 

  381.         fShmNonRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_CLIENT;

  382.         fShmNonRtClientControl.filename += nonRtClientBaseName;

  383. 

  384.         fShmNonRtServerControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_SERVER;

  385.         fShmNonRtServerControl.filename += nonRtServerBaseName;

  386.     }

  387. 

  388.     ~CarlaEngineBridge() noexcept override

  389.     {

  390.         carla_debug("CarlaEngineBridge::~CarlaEngineBridge()");

  391. 

  392.         clear();

  393.     }

  394. 

  395.     // -------------------------------------

  396.     // CarlaEngine virtual calls

  397. 

  398.     bool init(const char* const clientName) override

  399.     {

  400.         carla_debug("CarlaEngineBridge::init(\"%s\")", clientName);

  401. 

  402.         if (! pData->init(clientName))

  403.         {

  404.             setLastError("Failed to init internal data");

  405.             return false;

  406.         }

  407. 

  408.         if (! fShmAudioPool.attach())

  409.         {

  410.             carla_stdout("Failed to attach to audio pool shared memory");

  411.             return false;

  412.         }

  413. 

  414.         if (! fShmRtClientControl.attach())

  415.         {

  416.             clear();

  417.             carla_stdout("Failed to attach to rt client control shared memory");

  418.             return false;

  419.         }

  420. 

  421.         if (! fShmRtClientControl.mapData())

  422.         {

  423.             clear();

  424.             carla_stdout("Failed to map rt client control shared memory");

  425.             return false;

  426.         }

  427. 

  428.         if (! fShmNonRtClientControl.attach())

  429.         {

  430.             clear();

  431.             carla_stdout("Failed to attach to non-rt client control shared memory");

  432.             return false;

  433.         }

  434. 

  435.         if (! fShmNonRtClientControl.mapData())

  436.         {

  437.             clear();

  438.             carla_stdout("Failed to map non-rt control client shared memory");

  439.             return false;

  440.         }

  441. 

  442.         if (! fShmNonRtServerControl.attach())

  443.         {

  444.             clear();

  445.             carla_stdout("Failed to attach to non-rt server control shared memory");

  446.             return false;

  447.         }

  448. 

  449.         if (! fShmNonRtServerControl.mapData())

  450.         {

  451.             clear();

  452.             carla_stdout("Failed to map non-rt control server shared memory");

  453.             return false;

  454.         }

  455. 

  456.         PluginBridgeNonRtClientOpcode opcode;

  457. 

  458.         opcode = fShmNonRtClientControl.readOpcode();

  459.         CARLA_SAFE_ASSERT_INT(opcode == kPluginBridgeNonRtClientNull, opcode);

  460. 

  461.         const uint32_t shmRtClientDataSize = fShmNonRtClientControl.readUInt();

  462.         CARLA_SAFE_ASSERT_INT2(shmRtClientDataSize == sizeof(BridgeRtClientData), shmRtClientDataSize, sizeof(BridgeRtClientData));

  463. 

  464.         const uint32_t shmNonRtClientDataSize = fShmNonRtClientControl.readUInt();

  465.         CARLA_SAFE_ASSERT_INT2(shmNonRtClientDataSize == sizeof(BridgeNonRtClientData), shmNonRtClientDataSize, sizeof(BridgeNonRtClientData));

  466. 

  467.         const uint32_t shmNonRtServerDataSize = fShmNonRtClientControl.readUInt();

  468.         CARLA_SAFE_ASSERT_INT2(shmNonRtServerDataSize == sizeof(BridgeNonRtServerData), shmNonRtServerDataSize, sizeof(BridgeNonRtServerData));

  469. 

  470.         opcode = fShmNonRtClientControl.readOpcode();

  471.         CARLA_SAFE_ASSERT_INT(opcode == kPluginBridgeNonRtClientSetBufferSize, opcode);

  472.         pData->bufferSize = fShmNonRtClientControl.readUInt();

  473. 

  474.         opcode = fShmNonRtClientControl.readOpcode();

  475.         CARLA_SAFE_ASSERT_INT(opcode == kPluginBridgeNonRtClientSetSampleRate, opcode);

  476.         pData->sampleRate = fShmNonRtClientControl.readDouble();

  477. 

  478.         carla_stdout("Carla Client Info:");

  479.         carla_stdout("  BufferSize: %i", pData->bufferSize);

  480.         carla_stdout("  SampleRate: %g", pData->sampleRate);

  481.         carla_stdout("  sizeof(BridgeRtClientData):    %i/" P_SIZE, shmRtClientDataSize,    sizeof(BridgeRtClientData));

  482.         carla_stdout("  sizeof(BridgeNonRtClientData): %i/" P_SIZE, shmNonRtClientDataSize, sizeof(BridgeNonRtClientData));

  483.         carla_stdout("  sizeof(BridgeNonRtServerData): %i/" P_SIZE, shmNonRtServerDataSize, sizeof(BridgeNonRtServerData));

  484. 

  485.         if (shmRtClientDataSize != sizeof(BridgeRtClientData) || shmNonRtClientDataSize != sizeof(BridgeNonRtClientData)  || shmNonRtServerDataSize != sizeof(BridgeNonRtServerData))

  486.             return false;

  487. 

  488.         startThread();

  489. 

  490.         return true;

  491.     }

  492. 

  493.     bool close() override

  494.     {

  495.         carla_debug("CarlaEnginePlugin::close()");

  496.         fLastPingCounter = -1;

  497. 

  498.         CarlaEngine::close();

  499. 

  500.         stopThread(5000);

  501.         clear();

  502. 

  503.         return true;

  504.     }

  505. 

  506.     bool isRunning() const noexcept override

  507.     {

  508.         return isThreadRunning() || ! fFirstIdle;

  509.     }

  510. 

  511.     bool isOffline() const noexcept override

  512.     {

  513.         return fIsOffline;

  514.     }

  515. 

  516.     EngineType getType() const noexcept override

  517.     {

  518.         return kEngineTypeBridge;

  519.     }

  520. 

  521.     const char* getCurrentDriverName() const noexcept

  522.     {

  523.         return "Bridge";

  524.     }

  525. 

  526.     void idle() noexcept override

  527.     {

  528.         CarlaPlugin* const plugin(pData->plugins[0].plugin);

  529.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  530. 

  531.         if (fFirstIdle)

  532.         {

  533.             fFirstIdle = false;

  534.             fLastPingCounter = 0;

  535. 

  536.             char bufStr[STR_MAX+1];

  537.             uint32_t bufStrSize;

  538. 

  539.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  540. 

  541.             // kPluginBridgeNonRtServerPluginInfo1

  542.             {

  543.                 // uint/category, uint/hints, uint/optionsAvailable, uint/optionsEnabled, long/uniqueId

  544.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

  545.                 fShmNonRtServerControl.writeUInt(plugin->getCategory());

  546.                 fShmNonRtServerControl.writeUInt(plugin->getHints());

  547.                 fShmNonRtServerControl.writeUInt(plugin->getOptionsAvailable());

  548.                 fShmNonRtServerControl.writeUInt(plugin->getOptionsEnabled());

  549.                 fShmNonRtServerControl.writeLong(plugin->getUniqueId());

  550.                 fShmNonRtServerControl.commitWrite();

  551.             }

  552. 

  553.             // kPluginBridgeNonRtServerPluginInfo2

  554.             {

  555.                 // uint/size, str[] (realName), uint/size, str[] (label), uint/size, str[] (maker), uint/size, str[] (copyright)

  556.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  557. 

  558.                 carla_zeroChar(bufStr, STR_MAX);

  559.                 plugin->getRealName(bufStr);

  560.                 bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  561.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  562.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  563. 

  564.                 carla_zeroChar(bufStr, STR_MAX);

  565.                 plugin->getLabel(bufStr);

  566.                 bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  567.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  568.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  569. 

  570.                 carla_zeroChar(bufStr, STR_MAX);

  571.                 plugin->getMaker(bufStr);

  572.                 bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  573.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  574.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  575. 

  576.                 carla_zeroChar(bufStr, STR_MAX);

  577.                 plugin->getCopyright(bufStr);

  578.                 bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  579.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  580.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  581. 

  582.                 fShmNonRtServerControl.commitWrite();

  583.             }

  584. 

  585.             // kPluginBridgeNonRtServerAudioCount

  586.             {

  587.                 // uint/ins, uint/outs

  588.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

  589.                 fShmNonRtServerControl.writeUInt(plugin->getAudioInCount());

  590.                 fShmNonRtServerControl.writeUInt(plugin->getAudioOutCount());

  591.                 fShmNonRtServerControl.commitWrite();

  592.             }

  593. 

  594.             // kPluginBridgeNonRtServerMidiCount

  595.             {

  596.                 // uint/ins, uint/outs

  597.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

  598.                 fShmNonRtServerControl.writeUInt(plugin->getMidiInCount());

  599.                 fShmNonRtServerControl.writeUInt(plugin->getMidiOutCount());

  600.                 fShmNonRtServerControl.commitWrite();

  601.             }

  602. 

  603.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  604. 

  605.             // kPluginBridgeNonRtServerParameter*

  606.             if (const uint32_t count = plugin->getParameterCount())

  607.             {

  608.                 uint32_t paramIns, paramOuts;

  609.                 plugin->getParameterCountInfo(paramIns, paramOuts);

  610. 

  611.                 // uint/ins, uint/outs

  612.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  613.                 fShmNonRtServerControl.writeUInt(paramIns);

  614.                 fShmNonRtServerControl.writeUInt(paramOuts);

  615.                 fShmNonRtServerControl.commitWrite();

  616. 

  617.                 for (uint32_t i=0, maxParams=pData->options.maxParameters; i<count && i<maxParams; ++i)

  618.                 {

  619.                     // kPluginBridgeNonRtServerParameterData1

  620.                     {

  621.                         const ParameterData& paramData(plugin->getParameterData(i));

  622. 

  623.                         // uint/index, int/rindex, uint/type, uint/hints, short/cc

  624.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  625.                         fShmNonRtServerControl.writeUInt(i);

  626.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  627.                         fShmNonRtServerControl.writeUInt(paramData.type);

  628.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  629.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  630.                         fShmNonRtServerControl.commitWrite();

  631.                     }

  632. 

  633.                     // kPluginBridgeNonRtServerParameterData2

  634.                     {

  635.                         // uint/index, uint/size, str[] (name), uint/size, str[] (unit)

  636.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  637.                         fShmNonRtServerControl.writeUInt(i);

  638. 

  639.                         carla_zeroChar(bufStr, STR_MAX);

  640.                         plugin->getParameterName(i, bufStr);

  641.                         bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  642.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  643.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  644. 

  645.                         carla_zeroChar(bufStr, STR_MAX);

  646.                         plugin->getParameterUnit(i, bufStr);

  647.                         bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  648.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  649.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  650. 

  651.                         fShmNonRtServerControl.commitWrite();

  652.                     }

  653. 

  654.                     // kPluginBridgeNonRtServerParameterRanges

  655.                     {

  656.                         const ParameterRanges& paramRanges(plugin->getParameterRanges(i));

  657. 

  658.                         // uint/index, float/def, float/min, float/max, float/step, float/stepSmall, float/stepLarge

  659.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  660.                         fShmNonRtServerControl.writeUInt(i);

  661.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  662.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  663.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  664.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  665.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  666.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  667.                         fShmNonRtServerControl.commitWrite();

  668.                     }

  669. 

  670.                     // kPluginBridgeNonRtServerParameterValue2

  671.                     {

  672.                         // uint/index float/value (used for init/output parameters only, don't resend values)

  673.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  674.                         fShmNonRtServerControl.writeUInt(i);

  675.                         fShmNonRtServerControl.writeFloat(plugin->getParameterValue(i));

  676.                         fShmNonRtServerControl.commitWrite();

  677.                     }

  678. 

  679.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  680.                 }

  681.             }

  682. 

  683.             // kPluginBridgeNonRtServerProgram*

  684.             if (const uint32_t count = plugin->getProgramCount())

  685.             {

  686.                 // uint/count

  687.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  688.                 fShmNonRtServerControl.writeUInt(count);

  689.                 fShmNonRtServerControl.commitWrite();

  690. 

  691.                 for (uint32_t i=0; i < count; ++i)

  692.                 {

  693.                     // uint/index, uint/size, str[] (name)

  694.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  695.                     fShmNonRtServerControl.writeUInt(i);

  696. 

  697.                     carla_zeroChar(bufStr, STR_MAX);

  698.                     plugin->getProgramName(i, bufStr);

  699.                     bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(bufStr)));

  700.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  701.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  702. 

  703.                     fShmNonRtServerControl.commitWrite();

  704.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  705.                 }

  706.             }

  707. 

  708.             // kPluginBridgeNonRtServerMidiProgram*

  709.             if (const uint32_t count = plugin->getMidiProgramCount())

  710.             {

  711.                 // uint/count

  712.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  713.                 fShmNonRtServerControl.writeUInt(count);

  714.                 fShmNonRtServerControl.commitWrite();

  715. 

  716.                 for (uint32_t i=0; i < count; ++i)

  717.                 {

  718.                     const MidiProgramData& mpData(plugin->getMidiProgramData(i));

  719.                     CARLA_SAFE_ASSERT_CONTINUE(mpData.name != nullptr);

  720. 

  721.                     // uint/index, uint/bank, uint/program, uint/size, str[] (name)

  722.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  723.                     fShmNonRtServerControl.writeUInt(i);

  724.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  725.                     fShmNonRtServerControl.writeUInt(mpData.program);

  726. 

  727.                     bufStrSize = carla_fixValue(1U, 32U, static_cast<uint32_t>(std::strlen(mpData.name)));

  728.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  729.                     fShmNonRtServerControl.writeCustomData(mpData.name, bufStrSize);

  730. 

  731.                     fShmNonRtServerControl.commitWrite();

  732.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  733.                 }

  734.             }

  735. 

  736.             // ready!

  737.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  738.             fShmNonRtServerControl.commitWrite();

  739. 

  740.             carla_stdout("Carla Client Ready!");

  741.         }

  742. 

  743.         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  744. 

  745.         if (const uint32_t count = plugin->getParameterCount())

  746.         {

  747.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  748. 

  749.             for (uint32_t i=0; i < count; ++i)

  750.             {

  751.                 if (! plugin->isParameterOutput(i))

  752.                     continue;

  753. 

  754.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  755.                 fShmNonRtServerControl.writeUInt(i);

  756.                 fShmNonRtServerControl.writeFloat(plugin->getParameterValue(i));

  757.                 fShmNonRtServerControl.commitWrite();

  758.                 fShmNonRtServerControl.waitIfDataIsReachingLimit();

  759.             }

  760.         }

  761. 

  762.         CarlaEngine::idle();

  763. 

  764.         try {

  765.             handleNonRtData();

  766.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  767. 

  768.         if (fLastPingCounter >= 0 && ++fLastPingCounter == 500)

  769.         {

  770.             carla_stderr("Did not receive ping message from server for a long time, closing...");

  771.             callback(ENGINE_CALLBACK_QUIT, 0, 0, 0, 0.0f, nullptr);

  772.         }

  773.     }

  774. 

  775.     void callback(const EngineCallbackOpcode action, const uint pluginId, const int value1, const int value2, const float value3, const char* const valueStr) noexcept override

  776.     {

  777.         CarlaEngine::callback(action, pluginId, value1, value2, value3, valueStr);

  778. 

  779.         if (fLastPingCounter < 0)

  780.             return;

  781. 

  782.         switch (action)

  783.         {

  784.         // uint/index float/value

  785.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  786.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  787.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  788.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

  789.             fShmNonRtServerControl.writeUInt(static_cast<uint>(value1));

  790.             fShmNonRtServerControl.writeFloat(value3);

  791.             fShmNonRtServerControl.commitWrite();

  792.         }   break;

  793. 

  794.         // uint/index float/value

  795.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  796.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  797.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  798.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

  799.             fShmNonRtServerControl.writeUInt(static_cast<uint>(value1));

  800.             fShmNonRtServerControl.writeFloat(value3);

  801.             fShmNonRtServerControl.commitWrite();

  802.         }   break;

  803. 

  804.         // int/index

  805.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  806.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  807.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  808.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  809.             fShmNonRtServerControl.writeInt(value1);

  810.             fShmNonRtServerControl.commitWrite();

  811.         }   break;

  812. 

  813.         // int/index

  814.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  815.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  816.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  817.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  818.             fShmNonRtServerControl.writeInt(value1);

  819.             fShmNonRtServerControl.commitWrite();

  820.         }   break;

  821. 

  822.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  823.             if (value1 != 1)

  824.             {

  825.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  826.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  827.                 fShmNonRtServerControl.commitWrite();

  828.             }

  829.             break;

  830. 

  831.         default:

  832.             break;

  833.         }

  834.     }

  835. 

  836.     // -------------------------------------------------------------------

  837. 

  838.     void clear() noexcept

  839.     {

  840.         fShmAudioPool.clear();

  841.         fShmRtClientControl.clear();

  842.         fShmNonRtClientControl.clear();

  843.         fShmNonRtServerControl.clear();

  844.     }

  845. 

  846.     void handleNonRtData()

  847.     {

  848.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  849.         {

  850.             const PluginBridgeNonRtClientOpcode opcode(fShmNonRtClientControl.readOpcode());

  851.             CarlaPlugin* const plugin(pData->plugins[0].plugin);

  852. 

  853. #ifdef DEBUG

  854.             if (opcode != kPluginBridgeNonRtClientPing) {

  855.                 carla_debug("CarlaEngineBridge::handleNonRtData() - got opcode: %s", PluginBridgeNonRtClientOpcode2str(opcode));

  856.             }

  857. #endif

  858. 

  859.             if (opcode != kPluginBridgeNonRtClientNull && fLastPingCounter > 0)

  860.                 fLastPingCounter = 0;

  861. 

  862.             switch (opcode)

  863.             {

  864.             case kPluginBridgeNonRtClientNull:

  865.                 break;

  866. 

  867.             case kPluginBridgeNonRtClientPing: {

  868.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  869. 

  870.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  871.                 fShmNonRtServerControl.commitWrite();

  872.             }   break;

  873. 

  874.             case kPluginBridgeNonRtClientActivate:

  875.                 if (plugin != nullptr && plugin->isEnabled())

  876.                     plugin->setActive(true, false, false);

  877.                 break;

  878. 

  879.             case kPluginBridgeNonRtClientDeactivate:

  880.                 if (plugin != nullptr && plugin->isEnabled())

  881.                     plugin->setActive(false, false, false);

  882.                 break;

  883. 

  884.             case kPluginBridgeNonRtClientSetBufferSize: {

  885.                 const uint32_t bufferSize(fShmNonRtClientControl.readUInt());

  886.                 pData->bufferSize = bufferSize;

  887.                 bufferSizeChanged(bufferSize);

  888.                 break;

  889.             }

  890. 

  891.             case kPluginBridgeNonRtClientSetSampleRate: {

  892.                 const double sampleRate(fShmNonRtClientControl.readDouble());

  893.                 pData->sampleRate = sampleRate;

  894.                 sampleRateChanged(sampleRate);

  895.                 break;

  896.             }

  897. 

  898.             case kPluginBridgeNonRtClientSetOffline:

  899.                 fIsOffline = true;

  900.                 offlineModeChanged(true);

  901.                 break;

  902. 

  903.             case kPluginBridgeNonRtClientSetOnline:

  904.                 fIsOffline = false;

  905.                 offlineModeChanged(false);

  906.                 break;

  907. 

  908.             case kPluginBridgeNonRtClientSetParameterValue: {

  909.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  910.                 const float    value(fShmNonRtClientControl.readFloat());

  911. 

  912.                 if (plugin != nullptr && plugin->isEnabled())

  913.                     plugin->setParameterValue(index, value, false, false, false);

  914.                 break;

  915.             }

  916. 

  917.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

  918.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  919.                 const uint8_t  channel(fShmNonRtClientControl.readByte());

  920. 

  921.                 if (plugin != nullptr && plugin->isEnabled())

  922.                     plugin->setParameterMidiChannel(index, channel, false, false);

  923.                 break;

  924.             }

  925. 

  926.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

  927.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  928.                 const int16_t  cc(fShmNonRtClientControl.readShort());

  929. 

  930.                 if (plugin != nullptr && plugin->isEnabled())

  931.                     plugin->setParameterMidiCC(index, cc, false, false);

  932.                 break;

  933.             }

  934. 

  935.             case kPluginBridgeNonRtClientSetProgram: {

  936.                 const int32_t index(fShmNonRtClientControl.readInt());

  937. 

  938.                 if (plugin != nullptr && plugin->isEnabled())

  939.                     plugin->setProgram(index, false, false, false);

  940.                 break;

  941.             }

  942. 

  943.             case kPluginBridgeNonRtClientSetMidiProgram: {

  944.                 const int32_t index(fShmNonRtClientControl.readInt());

  945. 

  946.                 if (plugin != nullptr && plugin->isEnabled())

  947.                     plugin->setMidiProgram(index, false, false, false);

  948.                 break;

  949.             }

  950. 

  951.             case kPluginBridgeNonRtClientSetCustomData: {

  952.                 // type

  953.                 const uint32_t typeSize(fShmNonRtClientControl.readUInt());

  954.                 char typeStr[typeSize+1];

  955.                 carla_zeroChar(typeStr, typeSize+1);

  956.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  957. 

  958.                 // key

  959.                 const uint32_t keySize(fShmNonRtClientControl.readUInt());

  960.                 char keyStr[keySize+1];

  961.                 carla_zeroChar(keyStr, keySize+1);

  962.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  963. 

  964.                 // value

  965.                 const uint32_t valueSize(fShmNonRtClientControl.readUInt());

  966.                 char valueStr[valueSize+1];

  967.                 carla_zeroChar(valueStr, valueSize+1);

  968.                 fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  969. 

  970.                 if (plugin != nullptr && plugin->isEnabled())

  971.                     plugin->setCustomData(typeStr, keyStr, valueStr, true);

  972.                 break;

  973.             }

  974. 

  975.             case kPluginBridgeNonRtClientSetChunkDataFile: {

  976.                 const uint32_t size(fShmNonRtClientControl.readUInt());

  977.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  978. 

  979.                 char chunkFilePathTry[size+1];

  980.                 carla_zeroChar(chunkFilePathTry, size+1);

  981.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  982. 

  983.                 CARLA_SAFE_ASSERT_BREAK(chunkFilePathTry[0] != '\0');

  984.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  985. 

  986.                 String chunkFilePath(chunkFilePathTry);

  987. 

  988. #ifdef CARLA_OS_WIN

  989.                 // check if running under Wine

  990.                 if (chunkFilePath.startsWith("/"))

  991.                     chunkFilePath = chunkFilePath.replaceSection(0, 1, "Z:\\").replace("/", "\\");

  992. #endif

  993. 

  994.                 File chunkFile(chunkFilePath);

  995.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  996. 

  997.                 String chunkDataBase64(chunkFile.loadFileAsString());

  998.                 chunkFile.deleteFile();

  999.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  1000. 

  1001.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(chunkDataBase64.toRawUTF8()));

  1002.                 plugin->setChunkData(chunk.data(), chunk.size());

  1003.                 break;

  1004.             }

  1005. 

  1006.             case kPluginBridgeNonRtClientSetCtrlChannel: {

  1007.                 const int16_t channel(fShmNonRtClientControl.readShort());

  1008.                 CARLA_SAFE_ASSERT_BREAK(channel >= -1 && channel < MAX_MIDI_CHANNELS);

  1009. 

  1010.                 if (plugin != nullptr && plugin->isEnabled())

  1011.                     plugin->setCtrlChannel(static_cast<int8_t>(channel), false, false);

  1012.                 break;

  1013.             }

  1014. 

  1015.             case kPluginBridgeNonRtClientSetOption: {

  1016.                 const uint32_t option(fShmNonRtClientControl.readUInt());

  1017.                 const bool     yesNo(fShmNonRtClientControl.readBool());

  1018. 

  1019.                 if (plugin != nullptr && plugin->isEnabled())

  1020.                     plugin->setOption(option, yesNo, false);

  1021.                 break;

  1022.             }

  1023. 

  1024.             case kPluginBridgeNonRtClientPrepareForSave: {

  1025.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1026. 

  1027.                 plugin->prepareForSave();

  1028. 

  1029.                 for (uint32_t i=0, count=plugin->getCustomDataCount(); i<count; ++i)

  1030.                 {

  1031.                     using namespace juce;

  1032. 

  1033.                     const CustomData& cdata(plugin->getCustomData(i));

  1034. 

  1035.                     const uint32_t typeLen(static_cast<uint32_t>(std::strlen(cdata.type)));

  1036.                     const uint32_t keyLen(static_cast<uint32_t>(std::strlen(cdata.key)));

  1037. 

  1038.                     MemoryOutputStream valueMemStream;

  1039.                     GZIPCompressorOutputStream compressedValueStream(&valueMemStream, 9, false);

  1040.                     compressedValueStream.write(cdata.value, std::strlen(cdata.value));

  1041. 

  1042.                     const CarlaString valueBase64(CarlaString::asBase64(valueMemStream.getData(), valueMemStream.getDataSize()));

  1043.                     const uint32_t valueBase64Len(static_cast<uint32_t>(valueBase64.length()));

  1044.                     CARLA_SAFE_ASSERT_CONTINUE(valueBase64Len > 0);

  1045. 

  1046.                     {

  1047.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1048. 

  1049.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  1050. 

  1051.                         fShmNonRtServerControl.writeUInt(typeLen);

  1052.                         fShmNonRtServerControl.writeCustomData(cdata.type, typeLen);

  1053. 

  1054.                         fShmNonRtServerControl.writeUInt(keyLen);

  1055.                         fShmNonRtServerControl.writeCustomData(cdata.key, keyLen);

  1056. 

  1057.                         fShmNonRtServerControl.writeUInt(valueBase64Len);

  1058.                         fShmNonRtServerControl.writeCustomData(valueBase64.buffer(), valueBase64Len);

  1059. 

  1060.                         fShmNonRtServerControl.commitWrite();

  1061.                     }

  1062.                 }

  1063. 

  1064.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  1065.                 {

  1066.                     void* data = nullptr;

  1067.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  1068.                     {

  1069.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  1070. 

  1071.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  1072.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  1073. 

  1074.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  1075. 

  1076.                         filePath += CARLA_OS_SEP_STR;

  1077.                         filePath += ".CarlaChunk_";

  1078.                         filePath += fShmNonRtClientControl.filename.buffer() + 24;

  1079. 

  1080.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  1081.                         {

  1082.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  1083. 

  1084.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1085. 

  1086.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  1087.                             fShmNonRtServerControl.writeUInt(ulength);

  1088.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  1089.                             fShmNonRtServerControl.commitWrite();

  1090.                         }

  1091.                     }

  1092.                 }

  1093. 

  1094.                 {

  1095.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1096. 

  1097.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  1098.                     fShmNonRtServerControl.commitWrite();

  1099.                 }

  1100.                 break;

  1101.             }

  1102. 

  1103.             case kPluginBridgeNonRtClientShowUI:

  1104.                 if (plugin != nullptr && plugin->isEnabled())

  1105.                     plugin->showCustomUI(true);

  1106.                 break;

  1107. 

  1108.             case kPluginBridgeNonRtClientHideUI:

  1109.                 if (plugin != nullptr && plugin->isEnabled())

  1110.                     plugin->showCustomUI(false);

  1111.                 break;

  1112. 

  1113.             case kPluginBridgeNonRtClientUiParameterChange: {

  1114.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1115.                 const float    value(fShmNonRtClientControl.readFloat());

  1116. 

  1117.                 if (plugin != nullptr && plugin->isEnabled())

  1118.                     plugin->uiParameterChange(index, value);

  1119.                 break;

  1120.             }

  1121. 

  1122.             case kPluginBridgeNonRtClientUiProgramChange: {

  1123.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1124. 

  1125.                 if (plugin != nullptr && plugin->isEnabled())

  1126.                     plugin->uiProgramChange(index);

  1127.                 break;

  1128.             }

  1129. 

  1130.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1131.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1132. 

  1133.                 if (plugin != nullptr && plugin->isEnabled())

  1134.                     plugin->uiMidiProgramChange(index);

  1135.                 break;

  1136.             }

  1137. 

  1138.             case kPluginBridgeNonRtClientUiNoteOn: {

  1139.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1140.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1141.                 const uint8_t velo(fShmNonRtClientControl.readByte());

  1142. 

  1143.                 if (plugin != nullptr && plugin->isEnabled())

  1144.                     plugin->uiNoteOn(chnl, note, velo);

  1145.                 break;

  1146.             }

  1147. 

  1148.             case kPluginBridgeNonRtClientUiNoteOff: {

  1149.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1150.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1151. 

  1152.                 if (plugin != nullptr && plugin->isEnabled())

  1153.                     plugin->uiNoteOff(chnl, note);

  1154.                 break;

  1155.             }

  1156. 

  1157.             case kPluginBridgeNonRtClientQuit:

  1158.                 signalThreadShouldExit();

  1159.                 callback(ENGINE_CALLBACK_QUIT, 0, 0, 0, 0.0f, nullptr);

  1160.                 break;

  1161.             }

  1162.         }

  1163.     }

  1164. 

  1165.     // -------------------------------------------------------------------

  1166. 

  1167. protected:

  1168.     void run() override

  1169.     {

  1170.         for (; ! shouldThreadExit();)

  1171.         {

  1172.             if (! fShmRtClientControl.waitForServer(5))

  1173.             {

  1174.                 carla_stderr2("Bridge timed-out, final post...");

  1175.                 fShmRtClientControl.postClient();

  1176.                 carla_stderr2("Bridge timed-out, done.");

  1177.                 signalThreadShouldExit();

  1178.                 break;

  1179.             }

  1180. 

  1181.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1182.             {

  1183.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1184.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1185. 

  1186. #ifdef DEBUG

  1187.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1188.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1189.                 }

  1190. #endif

  1191. 

  1192.                 switch (opcode)

  1193.                 {

  1194.                 case kPluginBridgeRtClientNull:

  1195.                     break;

  1196. 

  1197.                 case kPluginBridgeRtClientSetAudioPool: {

  1198.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1199.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1200.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1201.                     break;

  1202.                 }

  1203. 

  1204.                 case kPluginBridgeRtClientControlEventParameter: {

  1205.                     const uint32_t time(fShmRtClientControl.readUInt());

  1206.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1207.                     const uint16_t param(fShmRtClientControl.readUShort());

  1208.                     const float    value(fShmRtClientControl.readFloat());

  1209. 

  1210.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1211.                     {

  1212.                         event->type    = kEngineEventTypeControl;

  1213.                         event->time    = time;

  1214.                         event->channel = channel;

  1215.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1216.                         event->ctrl.param = param;

  1217.                         event->ctrl.value = value;

  1218.                     }

  1219.                     break;

  1220.                 }

  1221. 

  1222.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1223.                     const uint32_t time(fShmRtClientControl.readUInt());

  1224.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1225.                     const uint16_t index(fShmRtClientControl.readUShort());

  1226. 

  1227.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1228.                     {

  1229.                         event->type    = kEngineEventTypeControl;

  1230.                         event->time    = time;

  1231.                         event->channel = channel;

  1232.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1233.                         event->ctrl.param = index;

  1234.                         event->ctrl.value = 0.0f;

  1235.                     }

  1236.                     break;

  1237.                 }

  1238. 

  1239.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1240.                     const uint32_t time(fShmRtClientControl.readUInt());

  1241.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1242.                     const uint16_t index(fShmRtClientControl.readUShort());

  1243. 

  1244.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1245.                     {

  1246.                         event->type    = kEngineEventTypeControl;

  1247.                         event->time    = time;

  1248.                         event->channel = channel;

  1249.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1250.                         event->ctrl.param = index;

  1251.                         event->ctrl.value = 0.0f;

  1252.                     }

  1253.                     break;

  1254.                 }

  1255. 

  1256.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1257.                     const uint32_t time(fShmRtClientControl.readUInt());

  1258.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1259. 

  1260.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1261.                     {

  1262.                         event->type    = kEngineEventTypeControl;

  1263.                         event->time    = time;

  1264.                         event->channel = channel;

  1265.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1266.                         event->ctrl.param = 0;

  1267.                         event->ctrl.value = 0.0f;

  1268.                     }

  1269.                 }

  1270. 

  1271.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1272.                     const uint32_t time(fShmRtClientControl.readUInt());

  1273.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1274. 

  1275.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1276.                     {

  1277.                         event->type    = kEngineEventTypeControl;

  1278.                         event->time    = time;

  1279.                         event->channel = channel;

  1280.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1281.                         event->ctrl.param = 0;

  1282.                         event->ctrl.value = 0.0f;

  1283.                     }

  1284.                 }

  1285. 

  1286.                 case kPluginBridgeRtClientMidiEvent: {

  1287.                     const uint32_t time(fShmRtClientControl.readUInt());

  1288.                     const uint8_t  port(fShmRtClientControl.readByte());

  1289.                     const uint8_t  size(fShmRtClientControl.readByte());

  1290.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1291. 

  1292.                     uint8_t data[size];

  1293. 

  1294.                     for (uint8_t i=0; i<size; ++i)

  1295.                         data[i] = fShmRtClientControl.readByte();

  1296. 

  1297.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1298.                     {

  1299.                         event->type    = kEngineEventTypeMidi;

  1300.                         event->time    = time;

  1301.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1302. 

  1303.                         event->midi.port = port;

  1304.                         event->midi.size = size;

  1305. 

  1306.                         if (size > EngineMidiEvent::kDataSize)

  1307.                         {

  1308.                             event->midi.dataExt = data;

  1309.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1310.                         }

  1311.                         else

  1312.                         {

  1313.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1314. 

  1315.                             uint8_t i=1;

  1316.                             for (; i < size; ++i)

  1317.                                 event->midi.data[i] = data[i];

  1318.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1319.                                 event->midi.data[i] = 0;

  1320. 

  1321.                             event->midi.dataExt = nullptr;

  1322.                         }

  1323.                     }

  1324.                     break;

  1325.                 }

  1326. 

  1327.                 case kPluginBridgeRtClientProcess: {

  1328.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1329. 

  1330.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(false))

  1331.                     {

  1332.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1333. 

  1334.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1335.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1336.                         const uint32_t cvInCount(plugin->getCVInCount());

  1337.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1338. 

  1339.                         const float* audioIn[audioInCount];

  1340.                         /* */ float* audioOut[audioOutCount];

  1341.                         const float* cvIn[cvInCount];

  1342.                         /* */ float* cvOut[cvOutCount];

  1343. 

  1344.                         for (uint32_t i=0; i < audioInCount; ++i)

  1345.                             audioIn[i] = fShmAudioPool.data + i*pData->bufferSize;

  1346.                         for (uint32_t i=0; i < audioOutCount; ++i)

  1347.                             audioOut[i] = fShmAudioPool.data + (i+audioInCount)*pData->bufferSize;

  1348. 

  1349.                         for (uint32_t i=0; i < cvInCount; ++i)

  1350.                             cvIn[i] = fShmAudioPool.data + i*pData->bufferSize;

  1351.                         for (uint32_t i=0; i < cvOutCount; ++i)

  1352.                             cvOut[i] = fShmAudioPool.data + (i+cvInCount)*pData->bufferSize;

  1353. 

  1354.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1355. 

  1356.                         timeInfo.playing = bridgeTimeInfo.playing;

  1357.                         timeInfo.frame   = bridgeTimeInfo.frame;

  1358.                         timeInfo.usecs   = bridgeTimeInfo.usecs;

  1359.                         timeInfo.valid   = bridgeTimeInfo.valid;

  1360. 

  1361.                         if (timeInfo.valid & EngineTimeInfo::kValidBBT)

  1362.                         {

  1363.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1364.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1365.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1366. 

  1367.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1368.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1369. 

  1370.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1371.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1372.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1373.                         }

  1374. 

  1375.                         plugin->initBuffers();

  1376.                         plugin->process(audioIn, audioOut, cvIn, cvOut, pData->bufferSize);

  1377.                         plugin->unlock();

  1378.                     }

  1379. 

  1380.                     // clear buffer

  1381.                     CARLA_SAFE_ASSERT_BREAK(pData->events.in != nullptr);

  1382. 

  1383.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1384.                         carla_zeroStruct<EngineEvent>(pData->events.in, kMaxEngineEventInternalCount);

  1385. 

  1386.                     break;

  1387.                 }

  1388. 

  1389.                 case kPluginBridgeRtClientQuit:

  1390.                     signalThreadShouldExit();

  1391.                     break;

  1392.                 }

  1393.             }

  1394. 

  1395.             if (! fShmRtClientControl.postClient())

  1396.                 carla_stderr2("Could not post to client rt semaphore");

  1397.         }

  1398. 

  1399.         callback(ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0.0f, nullptr);

  1400.     }

  1401. 

  1402.     // called from process thread above

  1403.     EngineEvent* getNextFreeInputEvent() const noexcept

  1404.     {

  1405.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1406.         {

  1407.             EngineEvent& event(pData->events.in[i]);

  1408. 

  1409.             if (event.type == kEngineEventTypeNull)

  1410.                 return &event;

  1411.         }

  1412.         return nullptr;

  1413.     }

  1414. 

  1415.     // -------------------------------------------------------------------

  1416. 

  1417. private:

  1418.     BridgeAudioPool          fShmAudioPool;

  1419.     BridgeRtClientControl    fShmRtClientControl;

  1420.     BridgeNonRtClientControl fShmNonRtClientControl;

  1421.     BridgeNonRtServerControl fShmNonRtServerControl;

  1422. 

  1423.     bool fIsOffline;

  1424.     bool fFirstIdle;

  1425.     int32_t fLastPingCounter;

  1426. 

  1427.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1428. };

  1429. 

  1430. // -----------------------------------------------------------------------

  1431. 

  1432. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1433. {

  1434.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1435. }

  1436. 

  1437. // -----------------------------------------------------------------------

  1438. 

  1439. #ifdef BRIDGE_PLUGIN

  1440. CarlaPlugin* CarlaPlugin::newNative(const CarlaPlugin::Initializer&)              { return nullptr; }

  1441. CarlaPlugin* CarlaPlugin::newFileGIG(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1442. CarlaPlugin* CarlaPlugin::newFileSF2(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1443. CarlaPlugin* CarlaPlugin::newFileSFZ(const CarlaPlugin::Initializer&)             { return nullptr; }

  1444. #endif

  1445. 

  1446. CARLA_BACKEND_END_NAMESPACE

  1447. 

  1448. // -----------------------------------------------------------------------

  1449. 

  1450. #if defined(CARLA_OS_WIN) && ! defined(__WINE__)

  1451. extern "C" __declspec (dllexport)

  1452. #else

  1453. extern "C" __attribute__ ((visibility("default")))

  1454. #endif

  1455. void carla_register_native_plugin_carla();

  1456. void carla_register_native_plugin_carla(){}

  1457. 

  1458. // -----------------------------------------------------------------------