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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. using juce::Time;

  36. 

  37. template<typename T>

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

  39. {

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

  41.     return (value != nullptr);

  42. }

  43. 

  44. CARLA_BACKEND_START_NAMESPACE

  45. 

  46. // -------------------------------------------------------------------

  47. 

  48. struct BridgeAudioPool {

  49.     CarlaString filename;

  50.     float* data;

  51.     char shm[64];

  52. 

  53.     BridgeAudioPool() noexcept

  54.         : filename(),

  55.           data(nullptr)

  56.     {

  57.         carla_zeroChars(shm, 64);

  58.         jackbridge_shm_init(shm);

  59.     }

  60. 

  61.     ~BridgeAudioPool() noexcept

  62.     {

  63.         // should be cleared by now

  64.         CARLA_SAFE_ASSERT(data == nullptr);

  65. 

  66.         clear();

  67.     }

  68. 

  69.     void clear() noexcept

  70.     {

  71.         filename.clear();

  72. 

  73.         if (! jackbridge_shm_is_valid(shm))

  74.         {

  75.             CARLA_SAFE_ASSERT(data == nullptr);

  76.             return;

  77.         }

  78. 

  79.         data = nullptr;

  80. 

  81.         jackbridge_shm_close(shm);

  82.         jackbridge_shm_init(shm);

  83.     }

  84. 

  85.     bool attach() noexcept

  86.     {

  87.         // must be invalid right now

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

  89. 

  90.         jackbridge_shm_attach(shm, filename);

  91. 

  92.         return jackbridge_shm_is_valid(shm);

  93.     }

  94. 

  95.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeAudioPool)

  96. };

  97. 

  98. // -------------------------------------------------------------------

  99. 

  100. struct BridgeRtClientControl : public CarlaRingBufferControl<SmallStackBuffer> {

  101.     CarlaString filename;

  102.     BridgeRtClientData* data;

  103.     char shm[64];

  104. 

  105.     BridgeRtClientControl() noexcept

  106.         : filename(),

  107.           data(nullptr)

  108.     {

  109.         carla_zeroChars(shm, 64);

  110.         jackbridge_shm_init(shm);

  111.     }

  112. 

  113.     ~BridgeRtClientControl() noexcept override

  114.     {

  115.         // should be cleared by now

  116.         CARLA_SAFE_ASSERT(data == nullptr);

  117. 

  118.         clear();

  119.     }

  120. 

  121.     void clear() noexcept

  122.     {

  123.         filename.clear();

  124. 

  125.         if (data != nullptr)

  126.             unmapData();

  127. 

  128.         if (! jackbridge_shm_is_valid(shm))

  129.             return;

  130. 

  131.         jackbridge_shm_close(shm);

  132.         jackbridge_shm_init(shm);

  133.     }

  134. 

  135.     bool attach() noexcept

  136.     {

  137.         // must be invalid right now

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

  139. 

  140.         jackbridge_shm_attach(shm, filename);

  141. 

  142.         return jackbridge_shm_is_valid(shm);

  143.     }

  144. 

  145.     bool mapData() noexcept

  146.     {

  147.         CARLA_SAFE_ASSERT(data == nullptr);

  148. 

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

  150.         {

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

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

  153.             return true;

  154.         }

  155. 

  156.         return false;

  157.     }

  158. 

  159.     void unmapData() noexcept

  160.     {

  161.         data = nullptr;

  162.         setRingBuffer(nullptr, false);

  163.     }

  164. 

  165.     bool postClient() noexcept

  166.     {

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

  168. 

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

  170.     }

  171. 

  172.     bool waitForServer(const uint secs, bool* const timedOut) noexcept

  173.     {

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

  175. 

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

  177.     }

  178. 

  179.     PluginBridgeRtClientOpcode readOpcode() noexcept

  180.     {

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

  182.     }

  183. 

  184.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeRtClientControl)

  185. };

  186. 

  187. // -------------------------------------------------------------------

  188. 

  189. struct BridgeNonRtClientControl : public CarlaRingBufferControl<BigStackBuffer> {

  190.     CarlaString filename;

  191.     BridgeNonRtClientData* data;

  192.     char shm[64];

  193. 

  194.     BridgeNonRtClientControl() noexcept

  195.         : filename(),

  196.           data(nullptr)

  197.     {

  198.         carla_zeroChars(shm, 64);

  199.         jackbridge_shm_init(shm);

  200.     }

  201. 

  202.     ~BridgeNonRtClientControl() noexcept override

  203.     {

  204.         // should be cleared by now

  205.         CARLA_SAFE_ASSERT(data == nullptr);

  206. 

  207.         clear();

  208.     }

  209. 

  210.     void clear() noexcept

  211.     {

  212.         filename.clear();

  213. 

  214.         if (data != nullptr)

  215.             unmapData();

  216. 

  217.         if (! jackbridge_shm_is_valid(shm))

  218.         {

  219.             CARLA_SAFE_ASSERT(data == nullptr);

  220.             return;

  221.         }

  222. 

  223.         jackbridge_shm_close(shm);

  224.         jackbridge_shm_init(shm);

  225.     }

  226. 

  227.     bool attach() noexcept

  228.     {

  229.         // must be invalid right now

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

  231. 

  232.         jackbridge_shm_attach(shm, filename);

  233. 

  234.         return jackbridge_shm_is_valid(shm);

  235.     }

  236. 

  237.     bool mapData() noexcept

  238.     {

  239.         CARLA_SAFE_ASSERT(data == nullptr);

  240. 

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

  242.         {

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

  244.             return true;

  245.         }

  246. 

  247.         return false;

  248.     }

  249. 

  250.     void unmapData() noexcept

  251.     {

  252.         data = nullptr;

  253.         setRingBuffer(nullptr, false);

  254.     }

  255. 

  256.     PluginBridgeNonRtClientOpcode readOpcode() noexcept

  257.     {

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

  259.     }

  260. 

  261.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtClientControl)

  262. };

  263. 

  264. // -------------------------------------------------------------------

  265. 

  266. struct BridgeNonRtServerControl : public CarlaRingBufferControl<HugeStackBuffer> {

  267.     CarlaMutex mutex;

  268.     CarlaString filename;

  269.     BridgeNonRtServerData* data;

  270.     char shm[64];

  271. 

  272.     BridgeNonRtServerControl() noexcept

  273.         :  mutex(),

  274.            filename(),

  275.            data(nullptr)

  276.     {

  277.         carla_zeroChars(shm, 64);

  278.         jackbridge_shm_init(shm);

  279.     }

  280. 

  281.     ~BridgeNonRtServerControl() noexcept override

  282.     {

  283.         // should be cleared by now

  284.         CARLA_SAFE_ASSERT(data == nullptr);

  285. 

  286.         clear();

  287.     }

  288. 

  289.     void clear() noexcept

  290.     {

  291.         filename.clear();

  292. 

  293.         if (data != nullptr)

  294.             unmapData();

  295. 

  296.         if (! jackbridge_shm_is_valid(shm))

  297.         {

  298.             CARLA_SAFE_ASSERT(data == nullptr);

  299.             return;

  300.         }

  301. 

  302.         jackbridge_shm_close(shm);

  303.         jackbridge_shm_init(shm);

  304.     }

  305. 

  306.     bool attach() noexcept

  307.     {

  308.         // must be invalid right now

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

  310. 

  311.         jackbridge_shm_attach(shm, filename);

  312. 

  313.         return jackbridge_shm_is_valid(shm);

  314.     }

  315. 

  316.     bool mapData() noexcept

  317.     {

  318.         CARLA_SAFE_ASSERT(data == nullptr);

  319. 

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

  321.         {

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

  323.             return true;

  324.         }

  325. 

  326.         return false;

  327.     }

  328. 

  329.     void unmapData() noexcept

  330.     {

  331.         data = nullptr;

  332.         setRingBuffer(nullptr, false);

  333.     }

  334. 

  335.     void writeOpcode(const PluginBridgeNonRtServerOpcode opcode) noexcept

  336.     {

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

  338.     }

  339. 

  340.     void waitIfDataIsReachingLimit() noexcept

  341.     {

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

  343.             return;

  344. 

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

  346.         {

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

  348.             {

  349.                 //carla_stdout("Client waitIfDataIsReachingLimit() reached and waited successfully");

  350.                 writeOpcode(kPluginBridgeNonRtServerPong);

  351.                 commitWrite();

  352.                 return;

  353.             }

  354.             carla_msleep(20);

  355.         }

  356. 

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

  358.     }

  359. 

  360.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtServerControl)

  361. };

  362. 

  363. // -------------------------------------------------------------------

  364. 

  365. class CarlaEngineBridge : public CarlaEngine,

  366.                           public CarlaThread

  367. {

  368. public:

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

  370.         : CarlaEngine(),

  371.           CarlaThread("CarlaEngineBridge"),

  372.           fShmAudioPool(),

  373.           fShmRtClientControl(),

  374.           fShmNonRtClientControl(),

  375.           fShmNonRtServerControl(),

  376.           fIsOffline(false),

  377.           fFirstIdle(true),

  378.           fLastPingTime(-1)

  379.     {

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

  381. 

  382.         fShmAudioPool.filename  = PLUGIN_BRIDGE_NAMEPREFIX_AUDIO_POOL;

  383.         fShmAudioPool.filename += audioPoolBaseName;

  384. 

  385.         fShmRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_RT_CLIENT;

  386.         fShmRtClientControl.filename += rtClientBaseName;

  387. 

  388.         fShmNonRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_CLIENT;

  389.         fShmNonRtClientControl.filename += nonRtClientBaseName;

  390. 

  391.         fShmNonRtServerControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_SERVER;

  392.         fShmNonRtServerControl.filename += nonRtServerBaseName;

  393.     }

  394. 

  395.     ~CarlaEngineBridge() noexcept override

  396.     {

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

  398. 

  399.         clear();

  400.     }

  401. 

  402.     // -------------------------------------

  403.     // CarlaEngine virtual calls

  404. 

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

  406.     {

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

  408. 

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

  410.         {

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

  412.             return false;

  413.         }

  414. 

  415.         if (! fShmAudioPool.attach())

  416.         {

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

  418.             return false;

  419.         }

  420. 

  421.         if (! fShmRtClientControl.attach())

  422.         {

  423.             clear();

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

  425.             return false;

  426.         }

  427. 

  428.         if (! fShmRtClientControl.mapData())

  429.         {

  430.             clear();

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

  432.             return false;

  433.         }

  434. 

  435.         if (! fShmNonRtClientControl.attach())

  436.         {

  437.             clear();

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

  439.             return false;

  440.         }

  441. 

  442.         if (! fShmNonRtClientControl.mapData())

  443.         {

  444.             clear();

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

  446.             return false;

  447.         }

  448. 

  449.         if (! fShmNonRtServerControl.attach())

  450.         {

  451.             clear();

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

  453.             return false;

  454.         }

  455. 

  456.         if (! fShmNonRtServerControl.mapData())

  457.         {

  458.             clear();

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

  460.             return false;

  461.         }

  462. 

  463.         PluginBridgeNonRtClientOpcode opcode;

  464. 

  465.         opcode = fShmNonRtClientControl.readOpcode();

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

  467. 

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

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

  470. 

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

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

  473. 

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

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

  476. 

  477.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  480. 

  481.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  484. 

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

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

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

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

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

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

  491. 

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

  493.             return false;

  494. 

  495.         // tell backend we're live

  496.         {

  497.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  498. 

  499.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  500.             fShmNonRtServerControl.commitWrite();

  501.         }

  502. 

  503.         startThread();

  504. 

  505.         return true;

  506.     }

  507. 

  508.     bool close() override

  509.     {

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

  511.         fLastPingTime = -1;

  512. 

  513.         CarlaEngine::close();

  514. 

  515.         stopThread(5000);

  516.         clear();

  517. 

  518.         return true;

  519.     }

  520. 

  521.     bool isRunning() const noexcept override

  522.     {

  523.         return isThreadRunning() || ! fFirstIdle;

  524.     }

  525. 

  526.     bool isOffline() const noexcept override

  527.     {

  528.         return fIsOffline;

  529.     }

  530. 

  531.     EngineType getType() const noexcept override

  532.     {

  533.         return kEngineTypeBridge;

  534.     }

  535. 

  536.     const char* getCurrentDriverName() const noexcept

  537.     {

  538.         return "Bridge";

  539.     }

  540. 

  541.     void idle() noexcept override

  542.     {

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

  544.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  545. 

  546.         const bool wasFirstIdle(fFirstIdle);

  547. 

  548.         if (fFirstIdle)

  549.         {

  550.             fFirstIdle = false;

  551.             fLastPingTime = Time::currentTimeMillis();

  552.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  553. 

  554.             char bufStr[STR_MAX+1];

  555.             uint32_t bufStrSize;

  556. 

  557.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  558. 

  559.             // kPluginBridgeNonRtServerPluginInfo1

  560.             {

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

  562.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

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

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

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

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

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

  568.                 fShmNonRtServerControl.commitWrite();

  569.             }

  570. 

  571.             // kPluginBridgeNonRtServerPluginInfo2

  572.             {

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

  574.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  575. 

  576.                 carla_zeroChars(bufStr, STR_MAX);

  577.                 plugin->getRealName(bufStr);

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

  579.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  580.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  581. 

  582.                 carla_zeroChars(bufStr, STR_MAX);

  583.                 plugin->getLabel(bufStr);

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

  585.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  586.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  587. 

  588.                 carla_zeroChars(bufStr, STR_MAX);

  589.                 plugin->getMaker(bufStr);

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

  591.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  592.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  593. 

  594.                 carla_zeroChars(bufStr, STR_MAX);

  595.                 plugin->getCopyright(bufStr);

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

  597.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  598.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  599. 

  600.                 fShmNonRtServerControl.commitWrite();

  601.             }

  602. 

  603.             // kPluginBridgeNonRtServerAudioCount

  604.             {

  605.                 // uint/ins, uint/outs

  606.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

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

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

  609.                 fShmNonRtServerControl.commitWrite();

  610.             }

  611. 

  612.             // kPluginBridgeNonRtServerMidiCount

  613.             {

  614.                 // uint/ins, uint/outs

  615.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

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

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

  618.                 fShmNonRtServerControl.commitWrite();

  619.             }

  620. 

  621.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  622. 

  623.             // kPluginBridgeNonRtServerParameter*

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

  625.             {

  626.                 // uint/count

  627.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  628.                 fShmNonRtServerControl.writeUInt(count);

  629.                 fShmNonRtServerControl.commitWrite();

  630. 

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

  632.                 {

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

  634. 

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

  636.                         continue;

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

  638.                         continue;

  639. 

  640.                     // kPluginBridgeNonRtServerParameterData1

  641.                     {

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

  643.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  644.                         fShmNonRtServerControl.writeUInt(i);

  645.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  646.                         fShmNonRtServerControl.writeUInt(paramData.type);

  647.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  648.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  649.                         fShmNonRtServerControl.commitWrite();

  650.                     }

  651. 

  652.                     // kPluginBridgeNonRtServerParameterData2

  653.                     {

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

  655.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  656.                         fShmNonRtServerControl.writeUInt(i);

  657. 

  658.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  661.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  662.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  663. 

  664.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  667.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  668.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  669. 

  670.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  673.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  674.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  675. 

  676.                         fShmNonRtServerControl.commitWrite();

  677.                     }

  678. 

  679.                     // kPluginBridgeNonRtServerParameterRanges

  680.                     {

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

  682. 

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

  684.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  685.                         fShmNonRtServerControl.writeUInt(i);

  686.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  687.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  688.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  689.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  690.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  691.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  692.                         fShmNonRtServerControl.commitWrite();

  693.                     }

  694. 

  695.                     // kPluginBridgeNonRtServerParameterValue2

  696.                     {

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

  698.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  699.                         fShmNonRtServerControl.writeUInt(i);

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

  701.                         fShmNonRtServerControl.commitWrite();

  702.                     }

  703. 

  704.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  705.                 }

  706.             }

  707. 

  708.             // kPluginBridgeNonRtServerProgram*

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

  710.             {

  711.                 // uint/count

  712.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  713.                 fShmNonRtServerControl.writeUInt(count);

  714.                 fShmNonRtServerControl.commitWrite();

  715. 

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

  717.                 {

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

  719.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  720.                     fShmNonRtServerControl.writeUInt(i);

  721. 

  722.                     carla_zeroChars(bufStr, STR_MAX);

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

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

  725.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  726.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  727. 

  728.                     fShmNonRtServerControl.commitWrite();

  729.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  730.                 }

  731.             }

  732. 

  733.             // kPluginBridgeNonRtServerMidiProgram*

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

  735.             {

  736.                 // uint/count

  737.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  738.                 fShmNonRtServerControl.writeUInt(count);

  739.                 fShmNonRtServerControl.commitWrite();

  740. 

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

  742.                 {

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

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

  745. 

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

  747.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  748.                     fShmNonRtServerControl.writeUInt(i);

  749.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  750.                     fShmNonRtServerControl.writeUInt(mpData.program);

  751. 

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

  753.                     fShmNonRtServerControl.writeUInt(bufStrSize);

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

  755. 

  756.                     fShmNonRtServerControl.commitWrite();

  757.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  758.                 }

  759.             }

  760. 

  761.             // ready!

  762.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  763.             fShmNonRtServerControl.commitWrite();

  764.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  765. 

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

  767.             fLastPingTime = Time::currentTimeMillis();

  768.         }

  769. 

  770.         // send parameter outputs

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

  772.         {

  773.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  774. 

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

  776.             {

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

  778.                     continue;

  779. 

  780.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  781.                 fShmNonRtServerControl.writeUInt(i);

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

  783. 

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

  785.                 if (! fShmNonRtServerControl.commitWrite())

  786.                     break;

  787.             }

  788.         }

  789. 

  790.         CarlaEngine::idle();

  791. 

  792.         try {

  793.             handleNonRtData();

  794.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  795. 

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

  797.         {

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

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

  800.         }

  801.     }

  802. 

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

  804.     {

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

  806. 

  807.         if (fLastPingTime < 0)

  808.             return;

  809. 

  810.         switch (action)

  811.         {

  812.         // uint/index float/value

  813.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  814.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  815.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  816.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

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

  818.             fShmNonRtServerControl.writeFloat(value3);

  819.             fShmNonRtServerControl.commitWrite();

  820.         }   break;

  821. 

  822.         // uint/index float/value

  823.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  824.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  825.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  826.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

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

  828.             fShmNonRtServerControl.writeFloat(value3);

  829.             fShmNonRtServerControl.commitWrite();

  830.         }   break;

  831. 

  832.         // int/index

  833.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  834.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  835.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  836.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  837.             fShmNonRtServerControl.writeInt(value1);

  838.             fShmNonRtServerControl.commitWrite();

  839.         }   break;

  840. 

  841.         // int/index

  842.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  843.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  844.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  845.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  846.             fShmNonRtServerControl.writeInt(value1);

  847.             fShmNonRtServerControl.commitWrite();

  848.         }   break;

  849. 

  850.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  851.             if (value1 != 1)

  852.             {

  853.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  854.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  855.                 fShmNonRtServerControl.commitWrite();

  856.             }

  857.             break;

  858. 

  859.         default:

  860.             break;

  861.         }

  862.     }

  863. 

  864.     // -------------------------------------------------------------------

  865. 

  866.     void clear() noexcept

  867.     {

  868.         fShmAudioPool.clear();

  869.         fShmRtClientControl.clear();

  870.         fShmNonRtClientControl.clear();

  871.         fShmNonRtServerControl.clear();

  872.     }

  873. 

  874.     void handleNonRtData()

  875.     {

  876.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  877.         {

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

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

  880. 

  881. #ifdef DEBUG

  882.             if (opcode != kPluginBridgeNonRtClientPing) {

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

  884.             }

  885. #endif

  886. 

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

  888.                 fLastPingTime = Time::currentTimeMillis();

  889. 

  890.             switch (opcode)

  891.             {

  892.             case kPluginBridgeNonRtClientNull:

  893.                 break;

  894. 

  895.             case kPluginBridgeNonRtClientPing: {

  896.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  897. 

  898.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  899.                 fShmNonRtServerControl.commitWrite();

  900.             }   break;

  901. 

  902.             case kPluginBridgeNonRtClientPingOnOff: {

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

  904. 

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

  906. 

  907.                 carla_stdout("Carla bridge client side, OnOff ping checks => %s", bool2str(onOff));

  908.             }   break;

  909. 

  910.             case kPluginBridgeNonRtClientActivate:

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

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

  913.                 break;

  914. 

  915.             case kPluginBridgeNonRtClientDeactivate:

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

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

  918.                 break;

  919. 

  920.             case kPluginBridgeNonRtClientSetBufferSize: {

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

  922.                 pData->bufferSize = bufferSize;

  923.                 bufferSizeChanged(bufferSize);

  924.                 break;

  925.             }

  926. 

  927.             case kPluginBridgeNonRtClientSetSampleRate: {

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

  929.                 pData->sampleRate = sampleRate;

  930.                 sampleRateChanged(sampleRate);

  931.                 break;

  932.             }

  933. 

  934.             case kPluginBridgeNonRtClientSetOffline:

  935.                 fIsOffline = true;

  936.                 offlineModeChanged(true);

  937.                 break;

  938. 

  939.             case kPluginBridgeNonRtClientSetOnline:

  940.                 fIsOffline = false;

  941.                 offlineModeChanged(false);

  942.                 break;

  943. 

  944.             case kPluginBridgeNonRtClientSetParameterValue: {

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

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

  947. 

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

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

  950.                 break;

  951.             }

  952. 

  953.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

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

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

  956. 

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

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

  959.                 break;

  960.             }

  961. 

  962.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

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

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

  965. 

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

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

  968.                 break;

  969.             }

  970. 

  971.             case kPluginBridgeNonRtClientSetProgram: {

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

  973. 

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

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

  976.                 break;

  977.             }

  978. 

  979.             case kPluginBridgeNonRtClientSetMidiProgram: {

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

  981. 

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

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

  984.                 break;

  985.             }

  986. 

  987.             case kPluginBridgeNonRtClientSetCustomData: {

  988.                 // type

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

  990.                 char typeStr[typeSize+1];

  991.                 carla_zeroChars(typeStr, typeSize+1);

  992.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  993. 

  994.                 // key

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

  996.                 char keyStr[keySize+1];

  997.                 carla_zeroChars(keyStr, keySize+1);

  998.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  999. 

  1000.                 // value

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

  1002.                 char valueStr[valueSize+1];

  1003.                 carla_zeroChars(valueStr, valueSize+1);

  1004.                 fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  1005. 

  1006.                 if (plugin != nullptr && plugin->isEnabled())

  1007.                     plugin->setCustomData(typeStr, keyStr, valueStr, true);

  1008.                 break;

  1009.             }

  1010. 

  1011.             case kPluginBridgeNonRtClientSetChunkDataFile: {

  1012.                 const uint32_t size(fShmNonRtClientControl.readUInt());

  1013.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  1014. 

  1015.                 char chunkFilePathTry[size+1];

  1016.                 carla_zeroChars(chunkFilePathTry, size+1);

  1017.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  1018. 

  1019.                 CARLA_SAFE_ASSERT_BREAK(chunkFilePathTry[0] != '\0');

  1020.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1021. 

  1022.                 carla_stdout("Carla bridge client side setChunkData 001");

  1023. 

  1024.                 String chunkFilePath(chunkFilePathTry);

  1025. 

  1026. #ifdef CARLA_OS_WIN

  1027.                 // check if running under Wine

  1028.                 if (chunkFilePath.startsWith("/"))

  1029.                     chunkFilePath = chunkFilePath.replaceSection(0, 1, "Z:\\").replace("/", "\\");

  1030. #endif

  1031. 

  1032.                 File chunkFile(chunkFilePath);

  1033.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  1034. 

  1035.                 String chunkDataBase64(chunkFile.loadFileAsString());

  1036.                 chunkFile.deleteFile();

  1037.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  1038. 

  1039.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(chunkDataBase64.toRawUTF8()));

  1040.                 carla_stdout("Carla bridge client side setChunkData 002");

  1041. 

  1042.                 plugin->setChunkData(chunk.data(), chunk.size());

  1043.                 carla_stdout("Carla bridge client side setChunkData done");

  1044.                 break;

  1045.             }

  1046. 

  1047.             case kPluginBridgeNonRtClientSetCtrlChannel: {

  1048.                 const int16_t channel(fShmNonRtClientControl.readShort());

  1049.                 CARLA_SAFE_ASSERT_BREAK(channel >= -1 && channel < MAX_MIDI_CHANNELS);

  1050. 

  1051.                 if (plugin != nullptr && plugin->isEnabled())

  1052.                     plugin->setCtrlChannel(static_cast<int8_t>(channel), false, false);

  1053.                 break;

  1054.             }

  1055. 

  1056.             case kPluginBridgeNonRtClientSetOption: {

  1057.                 const uint32_t option(fShmNonRtClientControl.readUInt());

  1058.                 const bool     yesNo(fShmNonRtClientControl.readBool());

  1059. 

  1060.                 if (plugin != nullptr && plugin->isEnabled())

  1061.                     plugin->setOption(option, yesNo, false);

  1062.                 break;

  1063.             }

  1064. 

  1065.             case kPluginBridgeNonRtClientPrepareForSave: {

  1066.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1067. 

  1068.                 plugin->prepareForSave();

  1069. 

  1070.                 for (uint32_t i=0, count=plugin->getCustomDataCount(); i<count; ++i)

  1071.                 {

  1072.                     const CustomData& cdata(plugin->getCustomData(i));

  1073. 

  1074.                     if (std::strcmp(cdata.type, CUSTOM_DATA_TYPE_STRING) == 0 && std::strcmp(cdata.key, "CarlaLoadLv2StateNow") == 0 && std::strcmp(cdata.value, "true") == 0)

  1075.                         continue;

  1076. 

  1077.                     const uint32_t typeLen(static_cast<uint32_t>(std::strlen(cdata.type)));

  1078.                     const uint32_t keyLen(static_cast<uint32_t>(std::strlen(cdata.key)));

  1079.                     const uint32_t valueLen(static_cast<uint32_t>(std::strlen(cdata.value)));

  1080. 

  1081.                     {

  1082.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1083. 

  1084.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  1085. 

  1086.                         fShmNonRtServerControl.writeUInt(typeLen);

  1087.                         fShmNonRtServerControl.writeCustomData(cdata.type, typeLen);

  1088. 

  1089.                         fShmNonRtServerControl.writeUInt(keyLen);

  1090.                         fShmNonRtServerControl.writeCustomData(cdata.key, keyLen);

  1091. 

  1092.                         fShmNonRtServerControl.writeUInt(valueLen);

  1093.                         fShmNonRtServerControl.writeCustomData(cdata.value, valueLen);

  1094. 

  1095.                         fShmNonRtServerControl.commitWrite();

  1096.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  1097.                     }

  1098.                 }

  1099. 

  1100.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  1101.                 {

  1102.                     void* data = nullptr;

  1103.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  1104.                     {

  1105.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  1106. 

  1107.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  1108.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  1109. 

  1110.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  1111. 

  1112.                         filePath += CARLA_OS_SEP_STR;

  1113.                         filePath += ".CarlaChunk_";

  1114.                         filePath += fShmNonRtClientControl.filename.buffer() + 24;

  1115. 

  1116.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  1117.                         {

  1118.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  1119. 

  1120.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1121. 

  1122.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  1123.                             fShmNonRtServerControl.writeUInt(ulength);

  1124.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  1125.                             fShmNonRtServerControl.commitWrite();

  1126.                         }

  1127.                     }

  1128.                 }

  1129. 

  1130.                 {

  1131.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1132. 

  1133.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  1134.                     fShmNonRtServerControl.commitWrite();

  1135.                 }

  1136.                 break;

  1137.             }

  1138. 

  1139.             case kPluginBridgeNonRtClientShowUI:

  1140.                 if (plugin != nullptr && plugin->isEnabled())

  1141.                     plugin->showCustomUI(true);

  1142.                 break;

  1143. 

  1144.             case kPluginBridgeNonRtClientHideUI:

  1145.                 if (plugin != nullptr && plugin->isEnabled())

  1146.                     plugin->showCustomUI(false);

  1147.                 break;

  1148. 

  1149.             case kPluginBridgeNonRtClientUiParameterChange: {

  1150.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1151.                 const float    value(fShmNonRtClientControl.readFloat());

  1152. 

  1153.                 if (plugin != nullptr && plugin->isEnabled())

  1154.                     plugin->uiParameterChange(index, value);

  1155.                 break;

  1156.             }

  1157. 

  1158.             case kPluginBridgeNonRtClientUiProgramChange: {

  1159.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1160. 

  1161.                 if (plugin != nullptr && plugin->isEnabled())

  1162.                     plugin->uiProgramChange(index);

  1163.                 break;

  1164.             }

  1165. 

  1166.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1167.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1168. 

  1169.                 if (plugin != nullptr && plugin->isEnabled())

  1170.                     plugin->uiMidiProgramChange(index);

  1171.                 break;

  1172.             }

  1173. 

  1174.             case kPluginBridgeNonRtClientUiNoteOn: {

  1175.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1176.                 const uint8_t note(fShmNonRtClientControl.readByte());

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

  1178. 

  1179.                 if (plugin != nullptr && plugin->isEnabled())

  1180.                     plugin->uiNoteOn(chnl, note, velo);

  1181.                 break;

  1182.             }

  1183. 

  1184.             case kPluginBridgeNonRtClientUiNoteOff: {

  1185.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1186.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1187. 

  1188.                 if (plugin != nullptr && plugin->isEnabled())

  1189.                     plugin->uiNoteOff(chnl, note);

  1190.                 break;

  1191.             }

  1192. 

  1193.             case kPluginBridgeNonRtClientQuit:

  1194.                 signalThreadShouldExit();

  1195.                 callback(ENGINE_CALLBACK_QUIT, 0, 0, 0, 0.0f, nullptr);

  1196.                 break;

  1197.             }

  1198.         }

  1199.     }

  1200. 

  1201.     // -------------------------------------------------------------------

  1202. 

  1203. protected:

  1204.     void run() override

  1205.     {

  1206.         bool timedOut, quitReceived = false;

  1207. 

  1208.         for (; ! shouldThreadExit();)

  1209.         {

  1210.             if (! fShmRtClientControl.waitForServer(5, &timedOut))

  1211.             {

  1212.                 /*

  1213.                 * As a special case we ignore timeouts for plugin bridges.

  1214.                 * Some big Windows plugins (Kontakt, FL Studio VST) can time out when initializing or doing UI stuff.

  1215.                 * If any other error happens the plugin bridge is stopped.

  1216.                 */

  1217.                 if (timedOut) continue;

  1218. 

  1219.                 carla_stderr2("Bridge timed-out, final post...");

  1220.                 fShmRtClientControl.postClient();

  1221.                 carla_stderr2("Bridge timed-out, done.");

  1222.                 signalThreadShouldExit();

  1223.                 break;

  1224.             }

  1225. 

  1226.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1227.             {

  1228.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1229.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1230. 

  1231. #ifdef DEBUG

  1232.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1233.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1234.                 }

  1235. #endif

  1236. 

  1237.                 switch (opcode)

  1238.                 {

  1239.                 case kPluginBridgeRtClientNull:

  1240.                     break;

  1241. 

  1242.                 case kPluginBridgeRtClientSetAudioPool: {

  1243.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1244.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1245.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1246.                     break;

  1247.                 }

  1248. 

  1249.                 case kPluginBridgeRtClientControlEventParameter: {

  1250.                     const uint32_t time(fShmRtClientControl.readUInt());

  1251.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1252.                     const uint16_t param(fShmRtClientControl.readUShort());

  1253.                     const float    value(fShmRtClientControl.readFloat());

  1254. 

  1255.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1256.                     {

  1257.                         event->type    = kEngineEventTypeControl;

  1258.                         event->time    = time;

  1259.                         event->channel = channel;

  1260.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1261.                         event->ctrl.param = param;

  1262.                         event->ctrl.value = value;

  1263.                     }

  1264.                     break;

  1265.                 }

  1266. 

  1267.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1268.                     const uint32_t time(fShmRtClientControl.readUInt());

  1269.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1270.                     const uint16_t index(fShmRtClientControl.readUShort());

  1271. 

  1272.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1273.                     {

  1274.                         event->type    = kEngineEventTypeControl;

  1275.                         event->time    = time;

  1276.                         event->channel = channel;

  1277.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1278.                         event->ctrl.param = index;

  1279.                         event->ctrl.value = 0.0f;

  1280.                     }

  1281.                     break;

  1282.                 }

  1283. 

  1284.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1285.                     const uint32_t time(fShmRtClientControl.readUInt());

  1286.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1287.                     const uint16_t index(fShmRtClientControl.readUShort());

  1288. 

  1289.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1290.                     {

  1291.                         event->type    = kEngineEventTypeControl;

  1292.                         event->time    = time;

  1293.                         event->channel = channel;

  1294.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1295.                         event->ctrl.param = index;

  1296.                         event->ctrl.value = 0.0f;

  1297.                     }

  1298.                     break;

  1299.                 }

  1300. 

  1301.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1302.                     const uint32_t time(fShmRtClientControl.readUInt());

  1303.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1304. 

  1305.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1306.                     {

  1307.                         event->type    = kEngineEventTypeControl;

  1308.                         event->time    = time;

  1309.                         event->channel = channel;

  1310.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1311.                         event->ctrl.param = 0;

  1312.                         event->ctrl.value = 0.0f;

  1313.                     }

  1314.                 }   break;

  1315. 

  1316.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1317.                     const uint32_t time(fShmRtClientControl.readUInt());

  1318.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1319. 

  1320.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1321.                     {

  1322.                         event->type    = kEngineEventTypeControl;

  1323.                         event->time    = time;

  1324.                         event->channel = channel;

  1325.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1326.                         event->ctrl.param = 0;

  1327.                         event->ctrl.value = 0.0f;

  1328.                     }

  1329.                 }   break;

  1330. 

  1331.                 case kPluginBridgeRtClientMidiEvent: {

  1332.                     const uint32_t time(fShmRtClientControl.readUInt());

  1333.                     const uint8_t  port(fShmRtClientControl.readByte());

  1334.                     const uint8_t  size(fShmRtClientControl.readByte());

  1335.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1336. 

  1337.                     uint8_t data[size];

  1338. 

  1339.                     for (uint8_t i=0; i<size; ++i)

  1340.                         data[i] = fShmRtClientControl.readByte();

  1341. 

  1342.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1343.                     {

  1344.                         event->type    = kEngineEventTypeMidi;

  1345.                         event->time    = time;

  1346.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1347. 

  1348.                         event->midi.port = port;

  1349.                         event->midi.size = size;

  1350. 

  1351.                         if (size > EngineMidiEvent::kDataSize)

  1352.                         {

  1353.                             event->midi.dataExt = data;

  1354.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1355.                         }

  1356.                         else

  1357.                         {

  1358.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1359. 

  1360.                             uint8_t i=1;

  1361.                             for (; i < size; ++i)

  1362.                                 event->midi.data[i] = data[i];

  1363.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1364.                                 event->midi.data[i] = 0;

  1365. 

  1366.                             event->midi.dataExt = nullptr;

  1367.                         }

  1368.                     }

  1369.                     break;

  1370.                 }

  1371. 

  1372.                 case kPluginBridgeRtClientProcess: {

  1373.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1374. 

  1375.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(false))

  1376.                     {

  1377.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1378. 

  1379.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1380.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1381.                         const uint32_t cvInCount(plugin->getCVInCount());

  1382.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1383. 

  1384.                         const float* audioIn[audioInCount];

  1385.                         /* */ float* audioOut[audioOutCount];

  1386.                         const float* cvIn[cvInCount];

  1387.                         /* */ float* cvOut[cvOutCount];

  1388. 

  1389.                         float* fdata = fShmAudioPool.data;

  1390. 

  1391.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1392.                             audioIn[i] = fdata;

  1393.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1394.                             audioOut[i] = fdata;

  1395. 

  1396.                         for (uint32_t i=0; i < cvInCount; ++i, fdata += pData->bufferSize)

  1397.                             cvIn[i] = fdata;

  1398.                         for (uint32_t i=0; i < cvOutCount; ++i, fdata += pData->bufferSize)

  1399.                             cvOut[i] = fdata;

  1400. 

  1401.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1402. 

  1403.                         timeInfo.playing = bridgeTimeInfo.playing;

  1404.                         timeInfo.frame   = bridgeTimeInfo.frame;

  1405.                         timeInfo.usecs   = bridgeTimeInfo.usecs;

  1406.                         timeInfo.valid   = bridgeTimeInfo.valid;

  1407. 

  1408.                         if (timeInfo.valid & EngineTimeInfo::kValidBBT)

  1409.                         {

  1410.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1411.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1412.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1413. 

  1414.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1415.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1416. 

  1417.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1418.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1419.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1420.                         }

  1421. 

  1422.                         plugin->initBuffers();

  1423.                         plugin->process(audioIn, audioOut, cvIn, cvOut, pData->bufferSize);

  1424.                         plugin->unlock();

  1425.                     }

  1426. 

  1427.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1428.                     carla_zeroBytes(midiData, kBridgeRtClientDataMidiOutSize);

  1429.                     std::size_t curMidiDataPos = 0;

  1430. 

  1431.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1432.                         carla_zeroStructs(pData->events.in,  kMaxEngineEventInternalCount);

  1433. 

  1434.                     if (pData->events.out[0].type != kEngineEventTypeNull)

  1435.                     {

  1436.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1437.                         {

  1438.                             const EngineEvent& event(pData->events.out[i]);

  1439. 

  1440.                             if (event.type == kEngineEventTypeNull)

  1441.                                 break;

  1442. 

  1443.                             if (event.type == kEngineEventTypeControl)

  1444.                             {

  1445.                                 uint8_t size;

  1446.                                 uint8_t data[3];

  1447.                                 event.ctrl.convertToMidiData(event.channel, size, data);

  1448.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1449. 

  1450.                                 if (curMidiDataPos + 1U /* size*/ + 4U /* time */ + size >= kBridgeRtClientDataMidiOutSize)

  1451.                                     break;

  1452. 

  1453.                                 // set size

  1454.                                 *midiData++ = size;

  1455. 

  1456.                                 // set time

  1457.                                 *(uint32_t*)midiData = event.time;

  1458.                                 midiData = midiData + 4;

  1459. 

  1460.                                 // set data

  1461.                                 for (uint8_t j=0; j<size; ++j)

  1462.                                     *midiData++ = data[j];

  1463. 

  1464.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + size;

  1465.                             }

  1466.                             else if (event.type == kEngineEventTypeMidi)

  1467.                             {

  1468.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1469. 

  1470.                                 if (curMidiDataPos + 1 /* size*/ + 4 /* time */ + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1471.                                     break;

  1472. 

  1473.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1474. 

  1475.                                 // set size

  1476.                                 *midiData++ = _midiEvent.size;

  1477. 

  1478.                                 // set time

  1479.                                 *(uint32_t*)midiData = event.time;

  1480.                                 midiData = midiData + 4;

  1481. 

  1482.                                 // set data

  1483.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1484. 

  1485.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1486.                                     *midiData++ = _midiData[j];

  1487. 

  1488.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + _midiEvent.size;

  1489.                             }

  1490.                         }

  1491. 

  1492.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1493.                     }

  1494. 

  1495.                 }   break;

  1496. 

  1497.                 case kPluginBridgeRtClientQuit: {

  1498.                     quitReceived = true;

  1499.                     signalThreadShouldExit();

  1500.                 }   break;

  1501.                 }

  1502.             }

  1503. 

  1504.             if (! fShmRtClientControl.postClient())

  1505.                 carla_stderr2("Could not post to client rt semaphore");

  1506.         }

  1507. 

  1508.         callback(ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0.0f, nullptr);

  1509. 

  1510.         if (! quitReceived)

  1511.         {

  1512.             const char* const message("Plugin bridge error, process thread has stopped");

  1513.             const std::size_t messageSize(std::strlen(message));

  1514. 

  1515.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1516.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1517.             fShmNonRtServerControl.writeUInt(messageSize);

  1518.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1519.             fShmNonRtServerControl.commitWrite();

  1520.         }

  1521.     }

  1522. 

  1523.     // called from process thread above

  1524.     EngineEvent* getNextFreeInputEvent() const noexcept

  1525.     {

  1526.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1527.         {

  1528.             EngineEvent* const event(&pData->events.in[i]);

  1529. 

  1530.             if (event->type == kEngineEventTypeNull)

  1531.                 return event;

  1532.         }

  1533.         return nullptr;

  1534.     }

  1535. 

  1536.     // -------------------------------------------------------------------

  1537. 

  1538. private:

  1539.     BridgeAudioPool          fShmAudioPool;

  1540.     BridgeRtClientControl    fShmRtClientControl;

  1541.     BridgeNonRtClientControl fShmNonRtClientControl;

  1542.     BridgeNonRtServerControl fShmNonRtServerControl;

  1543. 

  1544.     bool fIsOffline;

  1545.     bool fFirstIdle;

  1546.     int64_t fLastPingTime;

  1547. 

  1548.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1549. };

  1550. 

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

  1552. 

  1553. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1554. {

  1555.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1556. }

  1557. 

  1558. // -----------------------------------------------------------------------

  1559. 

  1560. #ifdef BRIDGE_PLUGIN

  1561. CarlaPlugin* CarlaPlugin::newNative(const CarlaPlugin::Initializer&)              { return nullptr; }

  1562. CarlaPlugin* CarlaPlugin::newFileGIG(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1563. CarlaPlugin* CarlaPlugin::newFileSF2(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1564. CarlaPlugin* CarlaPlugin::newFileSFZ(const CarlaPlugin::Initializer&)             { return nullptr; }

  1565. #endif

  1566. 

  1567. CARLA_BACKEND_END_NAMESPACE

  1568. 

  1569. // -----------------------------------------------------------------------

  1570. 

  1571. #if defined(CARLA_OS_WIN) && ! defined(__WINE__)

  1572. extern "C" __declspec (dllexport)

  1573. #else

  1574. extern "C" __attribute__ ((visibility("default")))

  1575. #endif

  1576. void carla_register_native_plugin_carla();

  1577. void carla_register_native_plugin_carla(){}

  1578. 

  1579. // -----------------------------------------------------------------------