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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) 2011-2015 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. using juce::Time;

  36. using juce::Thread;

  37. 

  38. template<typename T>

  39. bool jackbridge_shm_map2(void* shm, T*& value) noexcept

  40. {

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

  42.     return (value != nullptr);

  43. }

  44. 

  45. CARLA_BACKEND_START_NAMESPACE

  46. 

  47. // -------------------------------------------------------------------

  48. 

  49. struct BridgeAudioPool {

  50.     CarlaString filename;

  51.     float* data;

  52.     char shm[64];

  53. 

  54.     BridgeAudioPool() noexcept

  55.         : filename(),

  56.           data(nullptr)

  57.     {

  58.         carla_zeroChars(shm, 64);

  59.         jackbridge_shm_init(shm);

  60.     }

  61. 

  62.     ~BridgeAudioPool() noexcept

  63.     {

  64.         // should be cleared by now

  65.         CARLA_SAFE_ASSERT(data == nullptr);

  66. 

  67.         clear();

  68.     }

  69. 

  70.     void clear() noexcept

  71.     {

  72.         filename.clear();

  73. 

  74.         if (! jackbridge_shm_is_valid(shm))

  75.         {

  76.             CARLA_SAFE_ASSERT(data == nullptr);

  77.             return;

  78.         }

  79. 

  80.         data = nullptr;

  81. 

  82.         jackbridge_shm_close(shm);

  83.         jackbridge_shm_init(shm);

  84.     }

  85. 

  86.     bool attach() noexcept

  87.     {

  88.         // must be invalid right now

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

  90. 

  91.         jackbridge_shm_attach(shm, filename);

  92. 

  93.         return jackbridge_shm_is_valid(shm);

  94.     }

  95. 

  96.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeAudioPool)

  97. };

  98. 

  99. // -------------------------------------------------------------------

  100. 

  101. struct BridgeRtClientControl : public CarlaRingBufferControl<SmallStackBuffer> {

  102.     CarlaString filename;

  103.     BridgeRtClientData* data;

  104.     char shm[64];

  105. 

  106.     BridgeRtClientControl() noexcept

  107.         : filename(),

  108.           data(nullptr)

  109.     {

  110.         carla_zeroChars(shm, 64);

  111.         jackbridge_shm_init(shm);

  112.     }

  113. 

  114.     ~BridgeRtClientControl() noexcept override

  115.     {

  116.         // should be cleared by now

  117.         CARLA_SAFE_ASSERT(data == nullptr);

  118. 

  119.         clear();

  120.     }

  121. 

  122.     void clear() noexcept

  123.     {

  124.         filename.clear();

  125. 

  126.         if (data != nullptr)

  127.             unmapData();

  128. 

  129.         if (! jackbridge_shm_is_valid(shm))

  130.             return;

  131. 

  132.         jackbridge_shm_close(shm);

  133.         jackbridge_shm_init(shm);

  134.     }

  135. 

  136.     bool attach() noexcept

  137.     {

  138.         // must be invalid right now

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

  140. 

  141.         jackbridge_shm_attach(shm, filename);

  142. 

  143.         return jackbridge_shm_is_valid(shm);

  144.     }

  145. 

  146.     bool mapData() noexcept

  147.     {

  148.         CARLA_SAFE_ASSERT(data == nullptr);

  149. 

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

  151.         {

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

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

  154. 

  155.             CARLA_SAFE_ASSERT_RETURN(jackbridge_sem_connect(&data->sem.server), false);

  156.             CARLA_SAFE_ASSERT_RETURN(jackbridge_sem_connect(&data->sem.client), false);

  157.             return true;

  158.         }

  159. 

  160.         return false;

  161.     }

  162. 

  163.     void unmapData() noexcept

  164.     {

  165.         data = nullptr;

  166.         setRingBuffer(nullptr, false);

  167.     }

  168. 

  169.     PluginBridgeRtClientOpcode readOpcode() noexcept

  170.     {

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

  172.     }

  173. 

  174.     // helper class that automatically posts semaphore on destructor

  175.     struct WaitHelper {

  176.         BridgeRtClientData* const data;

  177.         const bool ok;

  178. 

  179.         WaitHelper(BridgeRtClientControl& c) noexcept

  180.             : data(c.data),

  181.               ok(jackbridge_sem_timedwait(&data->sem.server, 5000, false)) {}

  182. 

  183.         ~WaitHelper() noexcept

  184.         {

  185.             if (ok)

  186.                 jackbridge_sem_post(&data->sem.client, false);

  187.         }

  188. 

  189.         CARLA_DECLARE_NON_COPY_STRUCT(WaitHelper)

  190.     };

  191. 

  192.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeRtClientControl)

  193. };

  194. 

  195. // -------------------------------------------------------------------

  196. 

  197. struct BridgeNonRtClientControl : public CarlaRingBufferControl<BigStackBuffer> {

  198.     CarlaString filename;

  199.     BridgeNonRtClientData* data;

  200.     char shm[64];

  201. 

  202.     BridgeNonRtClientControl() noexcept

  203.         : filename(),

  204.           data(nullptr)

  205.     {

  206.         carla_zeroChars(shm, 64);

  207.         jackbridge_shm_init(shm);

  208.     }

  209. 

  210.     ~BridgeNonRtClientControl() noexcept override

  211.     {

  212.         // should be cleared by now

  213.         CARLA_SAFE_ASSERT(data == nullptr);

  214. 

  215.         clear();

  216.     }

  217. 

  218.     void clear() noexcept

  219.     {

  220.         filename.clear();

  221. 

  222.         if (data != nullptr)

  223.             unmapData();

  224. 

  225.         if (! jackbridge_shm_is_valid(shm))

  226.         {

  227.             CARLA_SAFE_ASSERT(data == nullptr);

  228.             return;

  229.         }

  230. 

  231.         jackbridge_shm_close(shm);

  232.         jackbridge_shm_init(shm);

  233.     }

  234. 

  235.     bool attach() noexcept

  236.     {

  237.         // must be invalid right now

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

  239. 

  240.         jackbridge_shm_attach(shm, filename);

  241. 

  242.         return jackbridge_shm_is_valid(shm);

  243.     }

  244. 

  245.     bool mapData() noexcept

  246.     {

  247.         CARLA_SAFE_ASSERT(data == nullptr);

  248. 

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

  250.         {

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

  252.             return true;

  253.         }

  254. 

  255.         return false;

  256.     }

  257. 

  258.     void unmapData() noexcept

  259.     {

  260.         data = nullptr;

  261.         setRingBuffer(nullptr, false);

  262.     }

  263. 

  264.     PluginBridgeNonRtClientOpcode readOpcode() noexcept

  265.     {

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

  267.     }

  268. 

  269.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtClientControl)

  270. };

  271. 

  272. // -------------------------------------------------------------------

  273. 

  274. struct BridgeNonRtServerControl : public CarlaRingBufferControl<HugeStackBuffer> {

  275.     CarlaMutex mutex;

  276.     CarlaString filename;

  277.     BridgeNonRtServerData* data;

  278.     char shm[64];

  279. 

  280.     BridgeNonRtServerControl() noexcept

  281.         :  mutex(),

  282.            filename(),

  283.            data(nullptr)

  284.     {

  285.         carla_zeroChars(shm, 64);

  286.         jackbridge_shm_init(shm);

  287.     }

  288. 

  289.     ~BridgeNonRtServerControl() noexcept override

  290.     {

  291.         // should be cleared by now

  292.         CARLA_SAFE_ASSERT(data == nullptr);

  293. 

  294.         clear();

  295.     }

  296. 

  297.     void clear() noexcept

  298.     {

  299.         filename.clear();

  300. 

  301.         if (data != nullptr)

  302.             unmapData();

  303. 

  304.         if (! jackbridge_shm_is_valid(shm))

  305.         {

  306.             CARLA_SAFE_ASSERT(data == nullptr);

  307.             return;

  308.         }

  309. 

  310.         jackbridge_shm_close(shm);

  311.         jackbridge_shm_init(shm);

  312.     }

  313. 

  314.     bool attach() noexcept

  315.     {

  316.         // must be invalid right now

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

  318. 

  319.         jackbridge_shm_attach(shm, filename);

  320. 

  321.         return jackbridge_shm_is_valid(shm);

  322.     }

  323. 

  324.     bool mapData() noexcept

  325.     {

  326.         CARLA_SAFE_ASSERT(data == nullptr);

  327. 

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

  329.         {

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

  331.             return true;

  332.         }

  333. 

  334.         return false;

  335.     }

  336. 

  337.     void unmapData() noexcept

  338.     {

  339.         data = nullptr;

  340.         setRingBuffer(nullptr, false);

  341.     }

  342. 

  343.     void writeOpcode(const PluginBridgeNonRtServerOpcode opcode) noexcept

  344.     {

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

  346.     }

  347. 

  348.     void waitIfDataIsReachingLimit() noexcept

  349.     {

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

  351.             return;

  352. 

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

  354.         {

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

  356.             {

  357.                 writeOpcode(kPluginBridgeNonRtServerPong);

  358.                 commitWrite();

  359.                 return;

  360.             }

  361.             carla_msleep(20);

  362.         }

  363. 

  364.         carla_stderr("Client waitIfDataIsReachingLimit() reached and failed");

  365.     }

  366. 

  367.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtServerControl)

  368. };

  369. 

  370. // -------------------------------------------------------------------

  371. 

  372. class CarlaEngineBridge : public CarlaEngine,

  373.                           public Thread

  374. {

  375. public:

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

  377.         : CarlaEngine(),

  378.           Thread("CarlaEngineBridge"),

  379.           fShmAudioPool(),

  380.           fShmRtClientControl(),

  381.           fShmNonRtClientControl(),

  382.           fShmNonRtServerControl(),

  383.           fIsOffline(false),

  384.           fFirstIdle(true),

  385.           fLastPingTime(-1)

  386.     {

  387.         carla_debug("CarlaEngineBridge::CarlaEngineBridge(\"%s\", \"%s\", \"%s\", \"%s\")", audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  388. 

  389.         fShmAudioPool.filename  = PLUGIN_BRIDGE_NAMEPREFIX_AUDIO_POOL;

  390.         fShmAudioPool.filename += audioPoolBaseName;

  391. 

  392.         fShmRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_RT_CLIENT;

  393.         fShmRtClientControl.filename += rtClientBaseName;

  394. 

  395.         fShmNonRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_CLIENT;

  396.         fShmNonRtClientControl.filename += nonRtClientBaseName;

  397. 

  398.         fShmNonRtServerControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_SERVER;

  399.         fShmNonRtServerControl.filename += nonRtServerBaseName;

  400.     }

  401. 

  402.     ~CarlaEngineBridge() noexcept override

  403.     {

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

  405. 

  406.         clear();

  407.     }

  408. 

  409.     // -------------------------------------

  410.     // CarlaEngine virtual calls

  411. 

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

  413.     {

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

  415. 

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

  417.         {

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

  419.             return false;

  420.         }

  421. 

  422.         if (! fShmAudioPool.attach())

  423.         {

  424.             carla_stderr("Failed to attach to audio pool shared memory");

  425.             return false;

  426.         }

  427. 

  428.         if (! fShmRtClientControl.attach())

  429.         {

  430.             clear();

  431.             carla_stderr("Failed to attach to rt client control shared memory");

  432.             return false;

  433.         }

  434. 

  435.         if (! fShmRtClientControl.mapData())

  436.         {

  437.             clear();

  438.             carla_stderr("Failed to map rt client control shared memory");

  439.             return false;

  440.         }

  441. 

  442.         if (! fShmNonRtClientControl.attach())

  443.         {

  444.             clear();

  445.             carla_stderr("Failed to attach to non-rt client control shared memory");

  446.             return false;

  447.         }

  448. 

  449.         if (! fShmNonRtClientControl.mapData())

  450.         {

  451.             clear();

  452.             carla_stderr("Failed to map non-rt control client shared memory");

  453.             return false;

  454.         }

  455. 

  456.         if (! fShmNonRtServerControl.attach())

  457.         {

  458.             clear();

  459.             carla_stderr("Failed to attach to non-rt server control shared memory");

  460.             return false;

  461.         }

  462. 

  463.         if (! fShmNonRtServerControl.mapData())

  464.         {

  465.             clear();

  466.             carla_stderr("Failed to map non-rt control server shared memory");

  467.             return false;

  468.         }

  469. 

  470.         PluginBridgeNonRtClientOpcode opcode;

  471. 

  472.         opcode = fShmNonRtClientControl.readOpcode();

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

  474. 

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

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

  477. 

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

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

  480. 

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

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

  483. 

  484.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  487. 

  488.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  491. 

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

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

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

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

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

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

  498. 

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

  500.             return false;

  501. 

  502.         // tell backend we're live

  503.         {

  504.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  505. 

  506.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  507.             fShmNonRtServerControl.commitWrite();

  508.         }

  509. 

  510.         startThread(10);

  511. 

  512.         return true;

  513.     }

  514. 

  515.     bool close() override

  516.     {

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

  518.         fLastPingTime = -1;

  519. 

  520.         CarlaEngine::close();

  521. 

  522.         stopThread(5000);

  523.         clear();

  524. 

  525.         return true;

  526.     }

  527. 

  528.     bool isRunning() const noexcept override

  529.     {

  530.         return isThreadRunning() || ! fFirstIdle;

  531.     }

  532. 

  533.     bool isOffline() const noexcept override

  534.     {

  535.         return fIsOffline;

  536.     }

  537. 

  538.     EngineType getType() const noexcept override

  539.     {

  540.         return kEngineTypeBridge;

  541.     }

  542. 

  543.     const char* getCurrentDriverName() const noexcept override

  544.     {

  545.         return "Bridge";

  546.     }

  547. 

  548.     void idle() noexcept override

  549.     {

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

  551.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  552. 

  553.         const bool wasFirstIdle(fFirstIdle);

  554. 

  555.         if (fFirstIdle)

  556.         {

  557.             fFirstIdle = false;

  558.             fLastPingTime = Time::currentTimeMillis();

  559.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  560. 

  561.             char bufStr[STR_MAX+1];

  562.             uint32_t bufStrSize;

  563. 

  564.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  565. 

  566.             // kPluginBridgeNonRtServerPluginInfo1

  567.             {

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

  569.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

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

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

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

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

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

  575.                 fShmNonRtServerControl.commitWrite();

  576.             }

  577. 

  578.             // kPluginBridgeNonRtServerPluginInfo2

  579.             {

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

  581.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  582. 

  583.                 carla_zeroChars(bufStr, STR_MAX);

  584.                 plugin->getRealName(bufStr);

  585.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  586.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  587.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  588. 

  589.                 carla_zeroChars(bufStr, STR_MAX);

  590.                 plugin->getLabel(bufStr);

  591.                 bufStrSize = carla_fixedValue(1U, 256U, static_cast<uint32_t>(std::strlen(bufStr)));

  592.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  593.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  594. 

  595.                 carla_zeroChars(bufStr, STR_MAX);

  596.                 plugin->getMaker(bufStr);

  597.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  598.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  599.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  600. 

  601.                 carla_zeroChars(bufStr, STR_MAX);

  602.                 plugin->getCopyright(bufStr);

  603.                 bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  604.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  605.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  606. 

  607.                 fShmNonRtServerControl.commitWrite();

  608.             }

  609. 

  610.             // kPluginBridgeNonRtServerAudioCount

  611.             {

  612.                 // uint/ins, uint/outs

  613.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

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

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

  616.                 fShmNonRtServerControl.commitWrite();

  617.             }

  618. 

  619.             // kPluginBridgeNonRtServerMidiCount

  620.             {

  621.                 // uint/ins, uint/outs

  622.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

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

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

  625.                 fShmNonRtServerControl.commitWrite();

  626.             }

  627. 

  628.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  629. 

  630.             // kPluginBridgeNonRtServerParameter*

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

  632.             {

  633.                 // uint/count

  634.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  635.                 fShmNonRtServerControl.writeUInt(count);

  636.                 fShmNonRtServerControl.commitWrite();

  637. 

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

  639.                 {

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

  641. 

  642.                     if (paramData.type != PARAMETER_INPUT && paramData.type != PARAMETER_OUTPUT)

  643.                         continue;

  644.                     if ((paramData.hints & PARAMETER_IS_ENABLED) == 0)

  645.                         continue;

  646. 

  647.                     // kPluginBridgeNonRtServerParameterData1

  648.                     {

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

  650.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  651.                         fShmNonRtServerControl.writeUInt(i);

  652.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  653.                         fShmNonRtServerControl.writeUInt(paramData.type);

  654.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  655.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  656.                         fShmNonRtServerControl.commitWrite();

  657.                     }

  658. 

  659.                     // kPluginBridgeNonRtServerParameterData2

  660.                     {

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

  662.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  663.                         fShmNonRtServerControl.writeUInt(i);

  664. 

  665.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  668.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  669.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  670. 

  671.                         carla_zeroChars(bufStr, STR_MAX);

  672.                         plugin->getParameterSymbol(i, bufStr);

  673.                         bufStrSize = carla_fixedValue(1U, 64U, static_cast<uint32_t>(std::strlen(bufStr)));

  674.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  675.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  676. 

  677.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  680.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  681.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  682. 

  683.                         fShmNonRtServerControl.commitWrite();

  684.                     }

  685. 

  686.                     // kPluginBridgeNonRtServerParameterRanges

  687.                     {

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

  689. 

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

  691.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  692.                         fShmNonRtServerControl.writeUInt(i);

  693.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  694.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  695.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  696.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  697.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  698.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  699.                         fShmNonRtServerControl.commitWrite();

  700.                     }

  701. 

  702.                     // kPluginBridgeNonRtServerParameterValue2

  703.                     {

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

  705.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  706.                         fShmNonRtServerControl.writeUInt(i);

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

  708.                         fShmNonRtServerControl.commitWrite();

  709.                     }

  710. 

  711.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  712.                 }

  713.             }

  714. 

  715.             // kPluginBridgeNonRtServerProgram*

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

  717.             {

  718.                 // uint/count

  719.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  720.                 fShmNonRtServerControl.writeUInt(count);

  721.                 fShmNonRtServerControl.commitWrite();

  722. 

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

  724.                 {

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

  726.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  727.                     fShmNonRtServerControl.writeUInt(i);

  728. 

  729.                     carla_zeroChars(bufStr, STR_MAX);

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

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

  732.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  733.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  734. 

  735.                     fShmNonRtServerControl.commitWrite();

  736.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  737.                 }

  738.             }

  739. 

  740.             // kPluginBridgeNonRtServerMidiProgram*

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

  742.             {

  743.                 // uint/count

  744.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  745.                 fShmNonRtServerControl.writeUInt(count);

  746.                 fShmNonRtServerControl.commitWrite();

  747. 

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

  749.                 {

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

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

  752. 

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

  754.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  755.                     fShmNonRtServerControl.writeUInt(i);

  756.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  757.                     fShmNonRtServerControl.writeUInt(mpData.program);

  758. 

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

  760.                     fShmNonRtServerControl.writeUInt(bufStrSize);

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

  762. 

  763.                     fShmNonRtServerControl.commitWrite();

  764.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  765.                 }

  766.             }

  767. 

  768.             // ready!

  769.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  770.             fShmNonRtServerControl.commitWrite();

  771.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  772. 

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

  774.             fLastPingTime = Time::currentTimeMillis();

  775.         }

  776. 

  777.         // send parameter outputs

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

  779.         {

  780.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  781. 

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

  783.             {

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

  785.                     continue;

  786. 

  787.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  788.                 fShmNonRtServerControl.writeUInt(i);

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

  790. 

  791.                 // parameter outputs are not that important, we can skip some

  792.                 if (! fShmNonRtServerControl.commitWrite())

  793.                     break;

  794.             }

  795.         }

  796. 

  797.         CarlaEngine::idle();

  798. 

  799.         try {

  800.             handleNonRtData();

  801.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  802. 

  803.         if (fLastPingTime > 0 && Time::currentTimeMillis() > fLastPingTime + 30000 && ! wasFirstIdle)

  804.         {

  805.             carla_stderr("Did not receive ping message from server for 30 secs, closing...");

  806.             threadShouldExit();

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

  808.         }

  809.     }

  810. 

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

  812.     {

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

  814. 

  815.         if (fLastPingTime < 0)

  816.             return;

  817. 

  818.         switch (action)

  819.         {

  820.         // uint/index float/value

  821.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  822.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  823.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  824.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

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

  826.             fShmNonRtServerControl.writeFloat(value3);

  827.             fShmNonRtServerControl.commitWrite();

  828.         }   break;

  829. 

  830.         // uint/index float/value

  831.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  832.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  833.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  834.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

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

  836.             fShmNonRtServerControl.writeFloat(value3);

  837.             fShmNonRtServerControl.commitWrite();

  838.         }   break;

  839. 

  840.         // int/index

  841.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  842.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  843.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  844.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  845.             fShmNonRtServerControl.writeInt(value1);

  846.             fShmNonRtServerControl.commitWrite();

  847.         }   break;

  848. 

  849.         // int/index

  850.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  851.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  852.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  853.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  854.             fShmNonRtServerControl.writeInt(value1);

  855.             fShmNonRtServerControl.commitWrite();

  856.         }   break;

  857. 

  858.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  859.             if (value1 != 1)

  860.             {

  861.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  862.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  863.                 fShmNonRtServerControl.commitWrite();

  864.             }

  865.             break;

  866. 

  867.         default:

  868.             break;

  869.         }

  870.     }

  871. 

  872.     // -------------------------------------------------------------------

  873. 

  874.     void clear() noexcept

  875.     {

  876.         fShmAudioPool.clear();

  877.         fShmRtClientControl.clear();

  878.         fShmNonRtClientControl.clear();

  879.         fShmNonRtServerControl.clear();

  880.     }

  881. 

  882.     void handleNonRtData()

  883.     {

  884.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  885.         {

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

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

  888. 

  889. #ifdef DEBUG

  890.             if (opcode != kPluginBridgeNonRtClientPing) {

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

  892.             }

  893. #endif

  894. 

  895.             if (opcode != kPluginBridgeNonRtClientNull && opcode != kPluginBridgeNonRtClientPingOnOff && fLastPingTime > 0)

  896.                 fLastPingTime = Time::currentTimeMillis();

  897. 

  898.             switch (opcode)

  899.             {

  900.             case kPluginBridgeNonRtClientNull:

  901.                 break;

  902. 

  903.             case kPluginBridgeNonRtClientPing: {

  904.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  905. 

  906.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  907.                 fShmNonRtServerControl.commitWrite();

  908.             }   break;

  909. 

  910.             case kPluginBridgeNonRtClientPingOnOff: {

  911.                 const uint32_t onOff(fShmNonRtClientControl.readBool());

  912. 

  913.                 fLastPingTime = onOff ? Time::currentTimeMillis() : -1;

  914.             }   break;

  915. 

  916.             case kPluginBridgeNonRtClientActivate:

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

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

  919.                 break;

  920. 

  921.             case kPluginBridgeNonRtClientDeactivate:

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

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

  924.                 break;

  925. 

  926.             case kPluginBridgeNonRtClientSetBufferSize: {

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

  928.                 pData->bufferSize = bufferSize;

  929.                 bufferSizeChanged(bufferSize);

  930.                 break;

  931.             }

  932. 

  933.             case kPluginBridgeNonRtClientSetSampleRate: {

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

  935.                 pData->sampleRate = sampleRate;

  936.                 sampleRateChanged(sampleRate);

  937.                 break;

  938.             }

  939. 

  940.             case kPluginBridgeNonRtClientSetOffline:

  941.                 fIsOffline = true;

  942.                 offlineModeChanged(true);

  943.                 break;

  944. 

  945.             case kPluginBridgeNonRtClientSetOnline:

  946.                 fIsOffline = false;

  947.                 offlineModeChanged(false);

  948.                 break;

  949. 

  950.             case kPluginBridgeNonRtClientSetParameterValue: {

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

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

  953. 

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

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

  956.                 break;

  957.             }

  958. 

  959.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

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

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

  962. 

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

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

  965.                 break;

  966.             }

  967. 

  968.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

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

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

  971. 

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

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

  974.                 break;

  975.             }

  976. 

  977.             case kPluginBridgeNonRtClientSetProgram: {

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

  979. 

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

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

  982.                 break;

  983.             }

  984. 

  985.             case kPluginBridgeNonRtClientSetMidiProgram: {

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

  987. 

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

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

  990.                 break;

  991.             }

  992. 

  993.             case kPluginBridgeNonRtClientSetCustomData: {

  994.                 // type

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

  996.                 char typeStr[typeSize+1];

  997.                 carla_zeroChars(typeStr, typeSize+1);

  998.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  999. 

  1000.                 // key

  1001.                 const uint32_t keySize(fShmNonRtClientControl.readUInt());

  1002.                 char keyStr[keySize+1];

  1003.                 carla_zeroChars(keyStr, keySize+1);

  1004.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  1005. 

  1006.                 // value

  1007.                 const uint32_t valueSize(fShmNonRtClientControl.readUInt());

  1008.                 char valueStr[valueSize+1];

  1009.                 carla_zeroChars(valueStr, valueSize+1);

  1010.                 fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  1011. 

  1012.                 if (plugin != nullptr && plugin->isEnabled())

  1013.                     plugin->setCustomData(typeStr, keyStr, valueStr, true);

  1014.                 break;

  1015.             }

  1016. 

  1017.             case kPluginBridgeNonRtClientSetChunkDataFile: {

  1018.                 const uint32_t size(fShmNonRtClientControl.readUInt());

  1019.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  1020. 

  1021.                 char chunkFilePathTry[size+1];

  1022.                 carla_zeroChars(chunkFilePathTry, size+1);

  1023.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  1024. 

  1025.                 CARLA_SAFE_ASSERT_BREAK(chunkFilePathTry[0] != '\0');

  1026.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1027. 

  1028.                 String chunkFilePath(chunkFilePathTry);

  1029. 

  1030. #ifdef CARLA_OS_WIN

  1031.                 // check if running under Wine

  1032.                 if (chunkFilePath.startsWith("/"))

  1033.                     chunkFilePath = chunkFilePath.replaceSection(0, 1, "Z:\\").replace("/", "\\");

  1034. #endif

  1035. 

  1036.                 File chunkFile(chunkFilePath);

  1037.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  1038. 

  1039.                 String chunkDataBase64(chunkFile.loadFileAsString());

  1040.                 chunkFile.deleteFile();

  1041.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  1042. 

  1043.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(chunkDataBase64.toRawUTF8()));

  1044. 

  1045.                 plugin->setChunkData(chunk.data(), chunk.size());

  1046.                 break;

  1047.             }

  1048. 

  1049.             case kPluginBridgeNonRtClientSetCtrlChannel: {

  1050.                 const int16_t channel(fShmNonRtClientControl.readShort());

  1051.                 CARLA_SAFE_ASSERT_BREAK(channel >= -1 && channel < MAX_MIDI_CHANNELS);

  1052. 

  1053.                 if (plugin != nullptr && plugin->isEnabled())

  1054.                     plugin->setCtrlChannel(static_cast<int8_t>(channel), false, false);

  1055.                 break;

  1056.             }

  1057. 

  1058.             case kPluginBridgeNonRtClientSetOption: {

  1059.                 const uint32_t option(fShmNonRtClientControl.readUInt());

  1060.                 const bool     yesNo(fShmNonRtClientControl.readBool());

  1061. 

  1062.                 if (plugin != nullptr && plugin->isEnabled())

  1063.                     plugin->setOption(option, yesNo, false);

  1064.                 break;

  1065.             }

  1066. 

  1067.             case kPluginBridgeNonRtClientPrepareForSave: {

  1068.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1069. 

  1070.                 plugin->prepareForSave();

  1071. 

  1072.                 for (uint32_t i=0, count=plugin->getCustomDataCount(); i<count; ++i)

  1073.                 {

  1074.                     const CustomData& cdata(plugin->getCustomData(i));

  1075. 

  1076.                     if (std::strcmp(cdata.type, CUSTOM_DATA_TYPE_STRING) == 0 && std::strcmp(cdata.key, "CarlaLoadLv2StateNow") == 0 && std::strcmp(cdata.value, "true") == 0)

  1077.                         continue;

  1078. 

  1079.                     const uint32_t typeLen(static_cast<uint32_t>(std::strlen(cdata.type)));

  1080.                     const uint32_t keyLen(static_cast<uint32_t>(std::strlen(cdata.key)));

  1081.                     const uint32_t valueLen(static_cast<uint32_t>(std::strlen(cdata.value)));

  1082. 

  1083.                     {

  1084.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1085. 

  1086.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  1087. 

  1088.                         fShmNonRtServerControl.writeUInt(typeLen);

  1089.                         fShmNonRtServerControl.writeCustomData(cdata.type, typeLen);

  1090. 

  1091.                         fShmNonRtServerControl.writeUInt(keyLen);

  1092.                         fShmNonRtServerControl.writeCustomData(cdata.key, keyLen);

  1093. 

  1094.                         fShmNonRtServerControl.writeUInt(valueLen);

  1095.                         fShmNonRtServerControl.writeCustomData(cdata.value, valueLen);

  1096. 

  1097.                         fShmNonRtServerControl.commitWrite();

  1098.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  1099.                     }

  1100.                 }

  1101. 

  1102.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  1103.                 {

  1104.                     void* data = nullptr;

  1105.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  1106.                     {

  1107.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  1108. 

  1109.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  1110.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  1111. 

  1112.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  1113. 

  1114.                         filePath += CARLA_OS_SEP_STR;

  1115.                         filePath += ".CarlaChunk_";

  1116.                         filePath += fShmNonRtClientControl.filename.buffer() + 24;

  1117. 

  1118.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  1119.                         {

  1120.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  1121. 

  1122.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1123. 

  1124.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  1125.                             fShmNonRtServerControl.writeUInt(ulength);

  1126.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  1127.                             fShmNonRtServerControl.commitWrite();

  1128.                         }

  1129.                     }

  1130.                 }

  1131. 

  1132.                 {

  1133.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1134. 

  1135.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  1136.                     fShmNonRtServerControl.commitWrite();

  1137.                 }

  1138.                 break;

  1139.             }

  1140. 

  1141.             case kPluginBridgeNonRtClientShowUI:

  1142.                 if (plugin != nullptr && plugin->isEnabled())

  1143.                     plugin->showCustomUI(true);

  1144.                 break;

  1145. 

  1146.             case kPluginBridgeNonRtClientHideUI:

  1147.                 if (plugin != nullptr && plugin->isEnabled())

  1148.                     plugin->showCustomUI(false);

  1149.                 break;

  1150. 

  1151.             case kPluginBridgeNonRtClientUiParameterChange: {

  1152.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1153.                 const float    value(fShmNonRtClientControl.readFloat());

  1154. 

  1155.                 if (plugin != nullptr && plugin->isEnabled())

  1156.                     plugin->uiParameterChange(index, value);

  1157.                 break;

  1158.             }

  1159. 

  1160.             case kPluginBridgeNonRtClientUiProgramChange: {

  1161.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1162. 

  1163.                 if (plugin != nullptr && plugin->isEnabled())

  1164.                     plugin->uiProgramChange(index);

  1165.                 break;

  1166.             }

  1167. 

  1168.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1169.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1170. 

  1171.                 if (plugin != nullptr && plugin->isEnabled())

  1172.                     plugin->uiMidiProgramChange(index);

  1173.                 break;

  1174.             }

  1175. 

  1176.             case kPluginBridgeNonRtClientUiNoteOn: {

  1177.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1178.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1179.                 const uint8_t velo(fShmNonRtClientControl.readByte());

  1180. 

  1181.                 if (plugin != nullptr && plugin->isEnabled())

  1182.                     plugin->uiNoteOn(chnl, note, velo);

  1183.                 break;

  1184.             }

  1185. 

  1186.             case kPluginBridgeNonRtClientUiNoteOff: {

  1187.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1188.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1189. 

  1190.                 if (plugin != nullptr && plugin->isEnabled())

  1191.                     plugin->uiNoteOff(chnl, note);

  1192.                 break;

  1193.             }

  1194. 

  1195.             case kPluginBridgeNonRtClientQuit:

  1196.                 signalThreadShouldExit();

  1197.                 callback(ENGINE_CALLBACK_QUIT, 0, 0, 0, 0.0f, nullptr);

  1198.                 break;

  1199.             }

  1200.         }

  1201.     }

  1202. 

  1203.     // -------------------------------------------------------------------

  1204. 

  1205. protected:

  1206.     void run() override

  1207.     {

  1208.         bool quitReceived = false;

  1209. 

  1210.         for (; ! threadShouldExit();)

  1211.         {

  1212.             const BridgeRtClientControl::WaitHelper helper(fShmRtClientControl);

  1213. 

  1214.             if (! helper.ok)

  1215.                 continue;

  1216. 

  1217.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1218.             {

  1219.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1220.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1221. 

  1222. #ifdef DEBUG

  1223.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1224.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1225.                 }

  1226. #endif

  1227. 

  1228.                 switch (opcode)

  1229.                 {

  1230.                 case kPluginBridgeRtClientNull:

  1231.                     break;

  1232. 

  1233.                 case kPluginBridgeRtClientSetAudioPool: {

  1234.                     if (fShmAudioPool.data != nullptr)

  1235.                     {

  1236.                         jackbridge_shm_unmap(fShmAudioPool.shm, fShmAudioPool.data);

  1237.                         fShmAudioPool.data = nullptr;

  1238.                     }

  1239.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1240.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1241.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1242.                     break;

  1243.                 }

  1244. 

  1245.                 case kPluginBridgeRtClientControlEventParameter: {

  1246.                     const uint32_t time(fShmRtClientControl.readUInt());

  1247.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1248.                     const uint16_t param(fShmRtClientControl.readUShort());

  1249.                     const float    value(fShmRtClientControl.readFloat());

  1250. 

  1251.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1252.                     {

  1253.                         event->type    = kEngineEventTypeControl;

  1254.                         event->time    = time;

  1255.                         event->channel = channel;

  1256.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1257.                         event->ctrl.param = param;

  1258.                         event->ctrl.value = value;

  1259.                     }

  1260.                     break;

  1261.                 }

  1262. 

  1263.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1264.                     const uint32_t time(fShmRtClientControl.readUInt());

  1265.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1266.                     const uint16_t index(fShmRtClientControl.readUShort());

  1267. 

  1268.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1269.                     {

  1270.                         event->type    = kEngineEventTypeControl;

  1271.                         event->time    = time;

  1272.                         event->channel = channel;

  1273.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1274.                         event->ctrl.param = index;

  1275.                         event->ctrl.value = 0.0f;

  1276.                     }

  1277.                     break;

  1278.                 }

  1279. 

  1280.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1281.                     const uint32_t time(fShmRtClientControl.readUInt());

  1282.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1283.                     const uint16_t index(fShmRtClientControl.readUShort());

  1284. 

  1285.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1286.                     {

  1287.                         event->type    = kEngineEventTypeControl;

  1288.                         event->time    = time;

  1289.                         event->channel = channel;

  1290.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1291.                         event->ctrl.param = index;

  1292.                         event->ctrl.value = 0.0f;

  1293.                     }

  1294.                     break;

  1295.                 }

  1296. 

  1297.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1298.                     const uint32_t time(fShmRtClientControl.readUInt());

  1299.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1300. 

  1301.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1302.                     {

  1303.                         event->type    = kEngineEventTypeControl;

  1304.                         event->time    = time;

  1305.                         event->channel = channel;

  1306.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1307.                         event->ctrl.param = 0;

  1308.                         event->ctrl.value = 0.0f;

  1309.                     }

  1310.                 }   break;

  1311. 

  1312.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1313.                     const uint32_t time(fShmRtClientControl.readUInt());

  1314.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1315. 

  1316.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1317.                     {

  1318.                         event->type    = kEngineEventTypeControl;

  1319.                         event->time    = time;

  1320.                         event->channel = channel;

  1321.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1322.                         event->ctrl.param = 0;

  1323.                         event->ctrl.value = 0.0f;

  1324.                     }

  1325.                 }   break;

  1326. 

  1327.                 case kPluginBridgeRtClientMidiEvent: {

  1328.                     const uint32_t time(fShmRtClientControl.readUInt());

  1329.                     const uint8_t  port(fShmRtClientControl.readByte());

  1330.                     const uint8_t  size(fShmRtClientControl.readByte());

  1331.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1332. 

  1333.                     uint8_t data[size];

  1334. 

  1335.                     for (uint8_t i=0; i<size; ++i)

  1336.                         data[i] = fShmRtClientControl.readByte();

  1337. 

  1338.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1339.                     {

  1340.                         event->type    = kEngineEventTypeMidi;

  1341.                         event->time    = time;

  1342.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1343. 

  1344.                         event->midi.port = port;

  1345.                         event->midi.size = size;

  1346. 

  1347.                         if (size > EngineMidiEvent::kDataSize)

  1348.                         {

  1349.                             event->midi.dataExt = data;

  1350.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1351.                         }

  1352.                         else

  1353.                         {

  1354.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1355. 

  1356.                             uint8_t i=1;

  1357.                             for (; i < size; ++i)

  1358.                                 event->midi.data[i] = data[i];

  1359.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1360.                                 event->midi.data[i] = 0;

  1361. 

  1362.                             event->midi.dataExt = nullptr;

  1363.                         }

  1364.                     }

  1365.                     break;

  1366.                 }

  1367. 

  1368.                 case kPluginBridgeRtClientProcess: {

  1369.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1370. 

  1371.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(false))

  1372.                     {

  1373.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1374. 

  1375.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1376.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1377.                         const uint32_t cvInCount(plugin->getCVInCount());

  1378.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1379. 

  1380.                         const float* audioIn[audioInCount];

  1381.                         /* */ float* audioOut[audioOutCount];

  1382.                         const float* cvIn[cvInCount];

  1383.                         /* */ float* cvOut[cvOutCount];

  1384. 

  1385.                         float* fdata = fShmAudioPool.data;

  1386. 

  1387.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1388.                             audioIn[i] = fdata;

  1389.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1390.                             audioOut[i] = fdata;

  1391. 

  1392.                         for (uint32_t i=0; i < cvInCount; ++i, fdata += pData->bufferSize)

  1393.                             cvIn[i] = fdata;

  1394.                         for (uint32_t i=0; i < cvOutCount; ++i, fdata += pData->bufferSize)

  1395.                             cvOut[i] = fdata;

  1396. 

  1397.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1398. 

  1399.                         timeInfo.playing = bridgeTimeInfo.playing;

  1400.                         timeInfo.frame   = bridgeTimeInfo.frame;

  1401.                         timeInfo.usecs   = bridgeTimeInfo.usecs;

  1402.                         timeInfo.valid   = bridgeTimeInfo.valid;

  1403. 

  1404.                         if (timeInfo.valid & EngineTimeInfo::kValidBBT)

  1405.                         {

  1406.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1407.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1408.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1409. 

  1410.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1411.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1412. 

  1413.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1414.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1415.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1416.                         }

  1417. 

  1418.                         plugin->initBuffers();

  1419.                         plugin->process(audioIn, audioOut, cvIn, cvOut, pData->bufferSize);

  1420.                         plugin->unlock();

  1421.                     }

  1422. 

  1423.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1424.                     carla_zeroBytes(midiData, kBridgeRtClientDataMidiOutSize);

  1425.                     std::size_t curMidiDataPos = 0;

  1426. 

  1427.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1428.                         carla_zeroStructs(pData->events.in,  kMaxEngineEventInternalCount);

  1429. 

  1430.                     if (pData->events.out[0].type != kEngineEventTypeNull)

  1431.                     {

  1432.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1433.                         {

  1434.                             const EngineEvent& event(pData->events.out[i]);

  1435. 

  1436.                             if (event.type == kEngineEventTypeNull)

  1437.                                 break;

  1438. 

  1439.                             if (event.type == kEngineEventTypeControl)

  1440.                             {

  1441.                                 uint8_t size;

  1442.                                 uint8_t data[3];

  1443.                                 event.ctrl.convertToMidiData(event.channel, size, data);

  1444.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1445. 

  1446.                                 if (curMidiDataPos + 1U /* size*/ + 4U /* time */ + size >= kBridgeRtClientDataMidiOutSize)

  1447.                                     break;

  1448. 

  1449.                                 // set size

  1450.                                 *midiData++ = size;

  1451. 

  1452.                                 // set time

  1453.                                 *(uint32_t*)midiData = event.time;

  1454.                                 midiData = midiData + 4;

  1455. 

  1456.                                 // set data

  1457.                                 for (uint8_t j=0; j<size; ++j)

  1458.                                     *midiData++ = data[j];

  1459. 

  1460.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + size;

  1461.                             }

  1462.                             else if (event.type == kEngineEventTypeMidi)

  1463.                             {

  1464.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1465. 

  1466.                                 if (curMidiDataPos + 1 /* size*/ + 4 /* time */ + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1467.                                     break;

  1468. 

  1469.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1470. 

  1471.                                 // set size

  1472.                                 *midiData++ = _midiEvent.size;

  1473. 

  1474.                                 // set time

  1475.                                 *(uint32_t*)midiData = event.time;

  1476.                                 midiData = midiData + 4;

  1477. 

  1478.                                 // set data

  1479.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1480. 

  1481.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1482.                                     *midiData++ = _midiData[j];

  1483. 

  1484.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + _midiEvent.size;

  1485.                             }

  1486.                         }

  1487. 

  1488.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1489.                     }

  1490. 

  1491.                 }   break;

  1492. 

  1493.                 case kPluginBridgeRtClientQuit: {

  1494.                     quitReceived = true;

  1495.                     signalThreadShouldExit();

  1496.                 }   break;

  1497.                 }

  1498.             }

  1499.         }

  1500. 

  1501.         callback(ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0.0f, nullptr);

  1502. 

  1503.         if (! quitReceived)

  1504.         {

  1505.             const char* const message("Plugin bridge error, process thread has stopped");

  1506.             const std::size_t messageSize(std::strlen(message));

  1507. 

  1508.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1509.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1510.             fShmNonRtServerControl.writeUInt(messageSize);

  1511.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1512.             fShmNonRtServerControl.commitWrite();

  1513.         }

  1514.     }

  1515. 

  1516.     // called from process thread above

  1517.     EngineEvent* getNextFreeInputEvent() const noexcept

  1518.     {

  1519.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1520.         {

  1521.             EngineEvent* const event(&pData->events.in[i]);

  1522. 

  1523.             if (event->type == kEngineEventTypeNull)

  1524.                 return event;

  1525.         }

  1526.         return nullptr;

  1527.     }

  1528. 

  1529.     // -------------------------------------------------------------------

  1530. 

  1531. private:

  1532.     BridgeAudioPool          fShmAudioPool;

  1533.     BridgeRtClientControl    fShmRtClientControl;

  1534.     BridgeNonRtClientControl fShmNonRtClientControl;

  1535.     BridgeNonRtServerControl fShmNonRtServerControl;

  1536. 

  1537.     bool fIsOffline;

  1538.     bool fFirstIdle;

  1539.     int64_t fLastPingTime;

  1540. 

  1541.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1542. };

  1543. 

  1544. // -----------------------------------------------------------------------

  1545. 

  1546. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1547. {

  1548.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1549. }

  1550. 

  1551. // -----------------------------------------------------------------------

  1552. 

  1553. #ifdef BRIDGE_PLUGIN

  1554. CarlaPlugin* CarlaPlugin::newNative(const CarlaPlugin::Initializer&)              { return nullptr; }

  1555. CarlaPlugin* CarlaPlugin::newFileGIG(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1556. CarlaPlugin* CarlaPlugin::newFileSF2(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1557. CarlaPlugin* CarlaPlugin::newFileSFZ(const CarlaPlugin::Initializer&)             { return nullptr; }

  1558. #endif

  1559. 

  1560. CARLA_BACKEND_END_NAMESPACE

  1561. 

  1562. // -----------------------------------------------------------------------

  1563. 

  1564. #if defined(CARLA_OS_WIN) && ! defined(__WINE__)

  1565. extern "C" __declspec (dllexport)

  1566. #else

  1567. extern "C" __attribute__ ((visibility("default")))

  1568. #endif

  1569. void carla_register_native_plugin_carla();

  1570. void carla_register_native_plugin_carla(){}

  1571. 

  1572. // -----------------------------------------------------------------------