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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.             return true;

  155.         }

  156. 

  157.         return false;

  158.     }

  159. 

  160.     void unmapData() noexcept

  161.     {

  162.         data = nullptr;

  163.         setRingBuffer(nullptr, false);

  164.     }

  165. 

  166.     PluginBridgeRtClientOpcode readOpcode() noexcept

  167.     {

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

  169.     }

  170. 

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

  172.     struct WaitHelper {

  173.         BridgeRtClientData* const data;

  174.         const bool ok;

  175. 

  176.         WaitHelper(BridgeRtClientControl& c) noexcept

  177.             : data(c.data),

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

  179. 

  180.         ~WaitHelper() noexcept

  181.         {

  182.             if (ok)

  183.                 jackbridge_sem_post(&data->sem.client);

  184.         }

  185. 

  186.         CARLA_DECLARE_NON_COPY_STRUCT(WaitHelper)

  187.     };

  188. 

  189.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeRtClientControl)

  190. };

  191. 

  192. // -------------------------------------------------------------------

  193. 

  194. struct BridgeNonRtClientControl : public CarlaRingBufferControl<BigStackBuffer> {

  195.     CarlaString filename;

  196.     BridgeNonRtClientData* data;

  197.     char shm[64];

  198. 

  199.     BridgeNonRtClientControl() noexcept

  200.         : filename(),

  201.           data(nullptr)

  202.     {

  203.         carla_zeroChars(shm, 64);

  204.         jackbridge_shm_init(shm);

  205.     }

  206. 

  207.     ~BridgeNonRtClientControl() noexcept override

  208.     {

  209.         // should be cleared by now

  210.         CARLA_SAFE_ASSERT(data == nullptr);

  211. 

  212.         clear();

  213.     }

  214. 

  215.     void clear() noexcept

  216.     {

  217.         filename.clear();

  218. 

  219.         if (data != nullptr)

  220.             unmapData();

  221. 

  222.         if (! jackbridge_shm_is_valid(shm))

  223.         {

  224.             CARLA_SAFE_ASSERT(data == nullptr);

  225.             return;

  226.         }

  227. 

  228.         jackbridge_shm_close(shm);

  229.         jackbridge_shm_init(shm);

  230.     }

  231. 

  232.     bool attach() noexcept

  233.     {

  234.         // must be invalid right now

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

  236. 

  237.         jackbridge_shm_attach(shm, filename);

  238. 

  239.         return jackbridge_shm_is_valid(shm);

  240.     }

  241. 

  242.     bool mapData() noexcept

  243.     {

  244.         CARLA_SAFE_ASSERT(data == nullptr);

  245. 

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

  247.         {

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

  249.             return true;

  250.         }

  251. 

  252.         return false;

  253.     }

  254. 

  255.     void unmapData() noexcept

  256.     {

  257.         data = nullptr;

  258.         setRingBuffer(nullptr, false);

  259.     }

  260. 

  261.     PluginBridgeNonRtClientOpcode readOpcode() noexcept

  262.     {

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

  264.     }

  265. 

  266.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtClientControl)

  267. };

  268. 

  269. // -------------------------------------------------------------------

  270. 

  271. struct BridgeNonRtServerControl : public CarlaRingBufferControl<HugeStackBuffer> {

  272.     CarlaMutex mutex;

  273.     CarlaString filename;

  274.     BridgeNonRtServerData* data;

  275.     char shm[64];

  276. 

  277.     BridgeNonRtServerControl() noexcept

  278.         :  mutex(),

  279.            filename(),

  280.            data(nullptr)

  281.     {

  282.         carla_zeroChars(shm, 64);

  283.         jackbridge_shm_init(shm);

  284.     }

  285. 

  286.     ~BridgeNonRtServerControl() noexcept override

  287.     {

  288.         // should be cleared by now

  289.         CARLA_SAFE_ASSERT(data == nullptr);

  290. 

  291.         clear();

  292.     }

  293. 

  294.     void clear() noexcept

  295.     {

  296.         filename.clear();

  297. 

  298.         if (data != nullptr)

  299.             unmapData();

  300. 

  301.         if (! jackbridge_shm_is_valid(shm))

  302.         {

  303.             CARLA_SAFE_ASSERT(data == nullptr);

  304.             return;

  305.         }

  306. 

  307.         jackbridge_shm_close(shm);

  308.         jackbridge_shm_init(shm);

  309.     }

  310. 

  311.     bool attach() noexcept

  312.     {

  313.         // must be invalid right now

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

  315. 

  316.         jackbridge_shm_attach(shm, filename);

  317. 

  318.         return jackbridge_shm_is_valid(shm);

  319.     }

  320. 

  321.     bool mapData() noexcept

  322.     {

  323.         CARLA_SAFE_ASSERT(data == nullptr);

  324. 

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

  326.         {

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

  328.             return true;

  329.         }

  330. 

  331.         return false;

  332.     }

  333. 

  334.     void unmapData() noexcept

  335.     {

  336.         data = nullptr;

  337.         setRingBuffer(nullptr, false);

  338.     }

  339. 

  340.     void writeOpcode(const PluginBridgeNonRtServerOpcode opcode) noexcept

  341.     {

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

  343.     }

  344. 

  345.     void waitIfDataIsReachingLimit() noexcept

  346.     {

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

  348.             return;

  349. 

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

  351.         {

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

  353.             {

  354.                 writeOpcode(kPluginBridgeNonRtServerPong);

  355.                 commitWrite();

  356.                 return;

  357.             }

  358.             carla_msleep(20);

  359.         }

  360. 

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

  362.     }

  363. 

  364.     CARLA_DECLARE_NON_COPY_STRUCT(BridgeNonRtServerControl)

  365. };

  366. 

  367. // -------------------------------------------------------------------

  368. 

  369. class CarlaEngineBridge : public CarlaEngine,

  370.                           public Thread

  371. {

  372. public:

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

  374.         : CarlaEngine(),

  375.           Thread("CarlaEngineBridge"),

  376.           fShmAudioPool(),

  377.           fShmRtClientControl(),

  378.           fShmNonRtClientControl(),

  379.           fShmNonRtServerControl(),

  380.           fIsOffline(false),

  381.           fFirstIdle(true),

  382.           fLastPingTime(-1)

  383.     {

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

  385. 

  386.         fShmAudioPool.filename  = PLUGIN_BRIDGE_NAMEPREFIX_AUDIO_POOL;

  387.         fShmAudioPool.filename += audioPoolBaseName;

  388. 

  389.         fShmRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_RT_CLIENT;

  390.         fShmRtClientControl.filename += rtClientBaseName;

  391. 

  392.         fShmNonRtClientControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_CLIENT;

  393.         fShmNonRtClientControl.filename += nonRtClientBaseName;

  394. 

  395.         fShmNonRtServerControl.filename  = PLUGIN_BRIDGE_NAMEPREFIX_NON_RT_SERVER;

  396.         fShmNonRtServerControl.filename += nonRtServerBaseName;

  397.     }

  398. 

  399.     ~CarlaEngineBridge() noexcept override

  400.     {

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

  402. 

  403.         clear();

  404.     }

  405. 

  406.     // -------------------------------------

  407.     // CarlaEngine virtual calls

  408. 

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

  410.     {

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

  412. 

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

  414.         {

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

  416.             return false;

  417.         }

  418. 

  419.         if (! fShmAudioPool.attach())

  420.         {

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

  422.             return false;

  423.         }

  424. 

  425.         if (! fShmRtClientControl.attach())

  426.         {

  427.             clear();

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

  429.             return false;

  430.         }

  431. 

  432.         if (! fShmRtClientControl.mapData())

  433.         {

  434.             clear();

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

  436.             return false;

  437.         }

  438. 

  439.         if (! fShmNonRtClientControl.attach())

  440.         {

  441.             clear();

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

  443.             return false;

  444.         }

  445. 

  446.         if (! fShmNonRtClientControl.mapData())

  447.         {

  448.             clear();

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

  450.             return false;

  451.         }

  452. 

  453.         if (! fShmNonRtServerControl.attach())

  454.         {

  455.             clear();

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

  457.             return false;

  458.         }

  459. 

  460.         if (! fShmNonRtServerControl.mapData())

  461.         {

  462.             clear();

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

  464.             return false;

  465.         }

  466. 

  467.         PluginBridgeNonRtClientOpcode opcode;

  468. 

  469.         opcode = fShmNonRtClientControl.readOpcode();

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

  471. 

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

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

  474. 

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

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

  477. 

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

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

  480. 

  481.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  484. 

  485.         opcode = fShmNonRtClientControl.readOpcode();

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

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

  488. 

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

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

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

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

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

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

  495. 

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

  497.             return false;

  498. 

  499.         // tell backend we're live

  500.         {

  501.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  502. 

  503.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  504.             fShmNonRtServerControl.commitWrite();

  505.         }

  506. 

  507.         startThread(10);

  508. 

  509.         return true;

  510.     }

  511. 

  512.     bool close() override

  513.     {

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

  515.         fLastPingTime = -1;

  516. 

  517.         CarlaEngine::close();

  518. 

  519.         stopThread(5000);

  520.         clear();

  521. 

  522.         return true;

  523.     }

  524. 

  525.     bool isRunning() const noexcept override

  526.     {

  527.         return isThreadRunning() || ! fFirstIdle;

  528.     }

  529. 

  530.     bool isOffline() const noexcept override

  531.     {

  532.         return fIsOffline;

  533.     }

  534. 

  535.     EngineType getType() const noexcept override

  536.     {

  537.         return kEngineTypeBridge;

  538.     }

  539. 

  540.     const char* getCurrentDriverName() const noexcept

  541.     {

  542.         return "Bridge";

  543.     }

  544. 

  545.     void idle() noexcept override

  546.     {

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

  548.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  549. 

  550.         const bool wasFirstIdle(fFirstIdle);

  551. 

  552.         if (fFirstIdle)

  553.         {

  554.             fFirstIdle = false;

  555.             fLastPingTime = Time::currentTimeMillis();

  556.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  557. 

  558.             char bufStr[STR_MAX+1];

  559.             uint32_t bufStrSize;

  560. 

  561.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  562. 

  563.             // kPluginBridgeNonRtServerPluginInfo1

  564.             {

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

  566.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

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

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

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

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

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

  572.                 fShmNonRtServerControl.commitWrite();

  573.             }

  574. 

  575.             // kPluginBridgeNonRtServerPluginInfo2

  576.             {

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

  578.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  579. 

  580.                 carla_zeroChars(bufStr, STR_MAX);

  581.                 plugin->getRealName(bufStr);

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

  583.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  584.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  585. 

  586.                 carla_zeroChars(bufStr, STR_MAX);

  587.                 plugin->getLabel(bufStr);

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

  589.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  590.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  591. 

  592.                 carla_zeroChars(bufStr, STR_MAX);

  593.                 plugin->getMaker(bufStr);

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

  595.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  596.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  597. 

  598.                 carla_zeroChars(bufStr, STR_MAX);

  599.                 plugin->getCopyright(bufStr);

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

  601.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  602.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  603. 

  604.                 fShmNonRtServerControl.commitWrite();

  605.             }

  606. 

  607.             // kPluginBridgeNonRtServerAudioCount

  608.             {

  609.                 // uint/ins, uint/outs

  610.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

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

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

  613.                 fShmNonRtServerControl.commitWrite();

  614.             }

  615. 

  616.             // kPluginBridgeNonRtServerMidiCount

  617.             {

  618.                 // uint/ins, uint/outs

  619.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

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

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

  622.                 fShmNonRtServerControl.commitWrite();

  623.             }

  624. 

  625.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  626. 

  627.             // kPluginBridgeNonRtServerParameter*

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

  629.             {

  630.                 // uint/count

  631.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  632.                 fShmNonRtServerControl.writeUInt(count);

  633.                 fShmNonRtServerControl.commitWrite();

  634. 

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

  636.                 {

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

  638. 

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

  640.                         continue;

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

  642.                         continue;

  643. 

  644.                     // kPluginBridgeNonRtServerParameterData1

  645.                     {

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

  647.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  648.                         fShmNonRtServerControl.writeUInt(i);

  649.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  650.                         fShmNonRtServerControl.writeUInt(paramData.type);

  651.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  652.                         fShmNonRtServerControl.writeShort(paramData.midiCC);

  653.                         fShmNonRtServerControl.commitWrite();

  654.                     }

  655. 

  656.                     // kPluginBridgeNonRtServerParameterData2

  657.                     {

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

  659.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  660.                         fShmNonRtServerControl.writeUInt(i);

  661. 

  662.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  665.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  666.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  667. 

  668.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  671.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  672.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  673. 

  674.                         carla_zeroChars(bufStr, STR_MAX);

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

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

  677.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  678.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  679. 

  680.                         fShmNonRtServerControl.commitWrite();

  681.                     }

  682. 

  683.                     // kPluginBridgeNonRtServerParameterRanges

  684.                     {

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

  686. 

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

  688.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  689.                         fShmNonRtServerControl.writeUInt(i);

  690.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  691.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  692.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  693.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  694.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  695.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  696.                         fShmNonRtServerControl.commitWrite();

  697.                     }

  698. 

  699.                     // kPluginBridgeNonRtServerParameterValue2

  700.                     {

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

  702.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  703.                         fShmNonRtServerControl.writeUInt(i);

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

  705.                         fShmNonRtServerControl.commitWrite();

  706.                     }

  707. 

  708.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  709.                 }

  710.             }

  711. 

  712.             // kPluginBridgeNonRtServerProgram*

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

  714.             {

  715.                 // uint/count

  716.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  717.                 fShmNonRtServerControl.writeUInt(count);

  718.                 fShmNonRtServerControl.commitWrite();

  719. 

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

  721.                 {

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

  723.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  724.                     fShmNonRtServerControl.writeUInt(i);

  725. 

  726.                     carla_zeroChars(bufStr, STR_MAX);

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

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

  729.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  730.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  731. 

  732.                     fShmNonRtServerControl.commitWrite();

  733.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  734.                 }

  735.             }

  736. 

  737.             // kPluginBridgeNonRtServerMidiProgram*

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

  739.             {

  740.                 // uint/count

  741.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  742.                 fShmNonRtServerControl.writeUInt(count);

  743.                 fShmNonRtServerControl.commitWrite();

  744. 

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

  746.                 {

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

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

  749. 

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

  751.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  752.                     fShmNonRtServerControl.writeUInt(i);

  753.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  754.                     fShmNonRtServerControl.writeUInt(mpData.program);

  755. 

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

  757.                     fShmNonRtServerControl.writeUInt(bufStrSize);

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

  759. 

  760.                     fShmNonRtServerControl.commitWrite();

  761.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  762.                 }

  763.             }

  764. 

  765.             // ready!

  766.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  767.             fShmNonRtServerControl.commitWrite();

  768.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  769. 

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

  771.             fLastPingTime = Time::currentTimeMillis();

  772.         }

  773. 

  774.         // send parameter outputs

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

  776.         {

  777.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  778. 

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

  780.             {

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

  782.                     continue;

  783. 

  784.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  785.                 fShmNonRtServerControl.writeUInt(i);

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

  787. 

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

  789.                 if (! fShmNonRtServerControl.commitWrite())

  790.                     break;

  791.             }

  792.         }

  793. 

  794.         CarlaEngine::idle();

  795. 

  796.         try {

  797.             handleNonRtData();

  798.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  799. 

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

  801.         {

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

  803.             threadShouldExit();

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

  805.         }

  806.     }

  807. 

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

  809.     {

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

  811. 

  812.         if (fLastPingTime < 0)

  813.             return;

  814. 

  815.         switch (action)

  816.         {

  817.         // uint/index float/value

  818.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  819.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  820.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  821.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

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

  823.             fShmNonRtServerControl.writeFloat(value3);

  824.             fShmNonRtServerControl.commitWrite();

  825.         }   break;

  826. 

  827.         // uint/index float/value

  828.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  829.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  830.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  831.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

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

  833.             fShmNonRtServerControl.writeFloat(value3);

  834.             fShmNonRtServerControl.commitWrite();

  835.         }   break;

  836. 

  837.         // int/index

  838.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  839.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  840.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  841.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  842.             fShmNonRtServerControl.writeInt(value1);

  843.             fShmNonRtServerControl.commitWrite();

  844.         }   break;

  845. 

  846.         // int/index

  847.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  848.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  849.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  850.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  851.             fShmNonRtServerControl.writeInt(value1);

  852.             fShmNonRtServerControl.commitWrite();

  853.         }   break;

  854. 

  855.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  856.             if (value1 != 1)

  857.             {

  858.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  859.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  860.                 fShmNonRtServerControl.commitWrite();

  861.             }

  862.             break;

  863. 

  864.         default:

  865.             break;

  866.         }

  867.     }

  868. 

  869.     // -------------------------------------------------------------------

  870. 

  871.     void clear() noexcept

  872.     {

  873.         fShmAudioPool.clear();

  874.         fShmRtClientControl.clear();

  875.         fShmNonRtClientControl.clear();

  876.         fShmNonRtServerControl.clear();

  877.     }

  878. 

  879.     void handleNonRtData()

  880.     {

  881.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  882.         {

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

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

  885. 

  886. #ifdef DEBUG

  887.             if (opcode != kPluginBridgeNonRtClientPing) {

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

  889.             }

  890. #endif

  891. 

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

  893.                 fLastPingTime = Time::currentTimeMillis();

  894. 

  895.             switch (opcode)

  896.             {

  897.             case kPluginBridgeNonRtClientNull:

  898.                 break;

  899. 

  900.             case kPluginBridgeNonRtClientPing: {

  901.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  902. 

  903.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  904.                 fShmNonRtServerControl.commitWrite();

  905.             }   break;

  906. 

  907.             case kPluginBridgeNonRtClientPingOnOff: {

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

  909. 

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

  911.             }   break;

  912. 

  913.             case kPluginBridgeNonRtClientActivate:

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

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

  916.                 break;

  917. 

  918.             case kPluginBridgeNonRtClientDeactivate:

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

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

  921.                 break;

  922. 

  923.             case kPluginBridgeNonRtClientSetBufferSize: {

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

  925.                 pData->bufferSize = bufferSize;

  926.                 bufferSizeChanged(bufferSize);

  927.                 break;

  928.             }

  929. 

  930.             case kPluginBridgeNonRtClientSetSampleRate: {

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

  932.                 pData->sampleRate = sampleRate;

  933.                 sampleRateChanged(sampleRate);

  934.                 break;

  935.             }

  936. 

  937.             case kPluginBridgeNonRtClientSetOffline:

  938.                 fIsOffline = true;

  939.                 offlineModeChanged(true);

  940.                 break;

  941. 

  942.             case kPluginBridgeNonRtClientSetOnline:

  943.                 fIsOffline = false;

  944.                 offlineModeChanged(false);

  945.                 break;

  946. 

  947.             case kPluginBridgeNonRtClientSetParameterValue: {

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

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

  950. 

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

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

  953.                 break;

  954.             }

  955. 

  956.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

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

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

  959. 

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

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

  962.                 break;

  963.             }

  964. 

  965.             case kPluginBridgeNonRtClientSetParameterMidiCC: {

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

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

  968. 

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

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

  971.                 break;

  972.             }

  973. 

  974.             case kPluginBridgeNonRtClientSetProgram: {

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

  976. 

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

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

  979.                 break;

  980.             }

  981. 

  982.             case kPluginBridgeNonRtClientSetMidiProgram: {

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

  984. 

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

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

  987.                 break;

  988.             }

  989. 

  990.             case kPluginBridgeNonRtClientSetCustomData: {

  991.                 // type

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

  993.                 char typeStr[typeSize+1];

  994.                 carla_zeroChars(typeStr, typeSize+1);

  995.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  996. 

  997.                 // key

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

  999.                 char keyStr[keySize+1];

  1000.                 carla_zeroChars(keyStr, keySize+1);

  1001.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  1002. 

  1003.                 // value

  1004.                 const uint32_t valueSize(fShmNonRtClientControl.readUInt());

  1005.                 char valueStr[valueSize+1];

  1006.                 carla_zeroChars(valueStr, valueSize+1);

  1007.                 fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  1008. 

  1009.                 if (plugin != nullptr && plugin->isEnabled())

  1010.                     plugin->setCustomData(typeStr, keyStr, valueStr, true);

  1011.                 break;

  1012.             }

  1013. 

  1014.             case kPluginBridgeNonRtClientSetChunkDataFile: {

  1015.                 const uint32_t size(fShmNonRtClientControl.readUInt());

  1016.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  1017. 

  1018.                 char chunkFilePathTry[size+1];

  1019.                 carla_zeroChars(chunkFilePathTry, size+1);

  1020.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  1021. 

  1022.                 CARLA_SAFE_ASSERT_BREAK(chunkFilePathTry[0] != '\0');

  1023.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1024. 

  1025.                 String chunkFilePath(chunkFilePathTry);

  1026. 

  1027. #ifdef CARLA_OS_WIN

  1028.                 // check if running under Wine

  1029.                 if (chunkFilePath.startsWith("/"))

  1030.                     chunkFilePath = chunkFilePath.replaceSection(0, 1, "Z:\\").replace("/", "\\");

  1031. #endif

  1032. 

  1033.                 File chunkFile(chunkFilePath);

  1034.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  1035. 

  1036.                 String chunkDataBase64(chunkFile.loadFileAsString());

  1037.                 chunkFile.deleteFile();

  1038.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  1039. 

  1040.                 std::vector<uint8_t> chunk(carla_getChunkFromBase64String(chunkDataBase64.toRawUTF8()));

  1041. 

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

  1043.                 break;

  1044.             }

  1045. 

  1046.             case kPluginBridgeNonRtClientSetCtrlChannel: {

  1047.                 const int16_t channel(fShmNonRtClientControl.readShort());

  1048.                 CARLA_SAFE_ASSERT_BREAK(channel >= -1 && channel < MAX_MIDI_CHANNELS);

  1049. 

  1050.                 if (plugin != nullptr && plugin->isEnabled())

  1051.                     plugin->setCtrlChannel(static_cast<int8_t>(channel), false, false);

  1052.                 break;

  1053.             }

  1054. 

  1055.             case kPluginBridgeNonRtClientSetOption: {

  1056.                 const uint32_t option(fShmNonRtClientControl.readUInt());

  1057.                 const bool     yesNo(fShmNonRtClientControl.readBool());

  1058. 

  1059.                 if (plugin != nullptr && plugin->isEnabled())

  1060.                     plugin->setOption(option, yesNo, false);

  1061.                 break;

  1062.             }

  1063. 

  1064.             case kPluginBridgeNonRtClientPrepareForSave: {

  1065.                 if (plugin == nullptr || ! plugin->isEnabled()) break;

  1066. 

  1067.                 plugin->prepareForSave();

  1068. 

  1069.                 for (uint32_t i=0, count=plugin->getCustomDataCount(); i<count; ++i)

  1070.                 {

  1071.                     const CustomData& cdata(plugin->getCustomData(i));

  1072. 

  1073.                     if (std::strcmp(cdata.type, CUSTOM_DATA_TYPE_STRING) == 0 && std::strcmp(cdata.key, "CarlaLoadLv2StateNow") == 0 && std::strcmp(cdata.value, "true") == 0)

  1074.                         continue;

  1075. 

  1076.                     const uint32_t typeLen(static_cast<uint32_t>(std::strlen(cdata.type)));

  1077.                     const uint32_t keyLen(static_cast<uint32_t>(std::strlen(cdata.key)));

  1078.                     const uint32_t valueLen(static_cast<uint32_t>(std::strlen(cdata.value)));

  1079. 

  1080.                     {

  1081.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1082. 

  1083.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  1084. 

  1085.                         fShmNonRtServerControl.writeUInt(typeLen);

  1086.                         fShmNonRtServerControl.writeCustomData(cdata.type, typeLen);

  1087. 

  1088.                         fShmNonRtServerControl.writeUInt(keyLen);

  1089.                         fShmNonRtServerControl.writeCustomData(cdata.key, keyLen);

  1090. 

  1091.                         fShmNonRtServerControl.writeUInt(valueLen);

  1092.                         fShmNonRtServerControl.writeCustomData(cdata.value, valueLen);

  1093. 

  1094.                         fShmNonRtServerControl.commitWrite();

  1095.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  1096.                     }

  1097.                 }

  1098. 

  1099.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  1100.                 {

  1101.                     void* data = nullptr;

  1102.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  1103.                     {

  1104.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  1105. 

  1106.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  1107.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  1108. 

  1109.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  1110. 

  1111.                         filePath += CARLA_OS_SEP_STR;

  1112.                         filePath += ".CarlaChunk_";

  1113.                         filePath += fShmNonRtClientControl.filename.buffer() + 24;

  1114. 

  1115.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  1116.                         {

  1117.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  1118. 

  1119.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1120. 

  1121.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  1122.                             fShmNonRtServerControl.writeUInt(ulength);

  1123.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  1124.                             fShmNonRtServerControl.commitWrite();

  1125.                         }

  1126.                     }

  1127.                 }

  1128. 

  1129.                 {

  1130.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1131. 

  1132.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  1133.                     fShmNonRtServerControl.commitWrite();

  1134.                 }

  1135.                 break;

  1136.             }

  1137. 

  1138.             case kPluginBridgeNonRtClientShowUI:

  1139.                 if (plugin != nullptr && plugin->isEnabled())

  1140.                     plugin->showCustomUI(true);

  1141.                 break;

  1142. 

  1143.             case kPluginBridgeNonRtClientHideUI:

  1144.                 if (plugin != nullptr && plugin->isEnabled())

  1145.                     plugin->showCustomUI(false);

  1146.                 break;

  1147. 

  1148.             case kPluginBridgeNonRtClientUiParameterChange: {

  1149.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1150.                 const float    value(fShmNonRtClientControl.readFloat());

  1151. 

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

  1153.                     plugin->uiParameterChange(index, value);

  1154.                 break;

  1155.             }

  1156. 

  1157.             case kPluginBridgeNonRtClientUiProgramChange: {

  1158.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1159. 

  1160.                 if (plugin != nullptr && plugin->isEnabled())

  1161.                     plugin->uiProgramChange(index);

  1162.                 break;

  1163.             }

  1164. 

  1165.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1166.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1167. 

  1168.                 if (plugin != nullptr && plugin->isEnabled())

  1169.                     plugin->uiMidiProgramChange(index);

  1170.                 break;

  1171.             }

  1172. 

  1173.             case kPluginBridgeNonRtClientUiNoteOn: {

  1174.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

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

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

  1177. 

  1178.                 if (plugin != nullptr && plugin->isEnabled())

  1179.                     plugin->uiNoteOn(chnl, note, velo);

  1180.                 break;

  1181.             }

  1182. 

  1183.             case kPluginBridgeNonRtClientUiNoteOff: {

  1184.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

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

  1186. 

  1187.                 if (plugin != nullptr && plugin->isEnabled())

  1188.                     plugin->uiNoteOff(chnl, note);

  1189.                 break;

  1190.             }

  1191. 

  1192.             case kPluginBridgeNonRtClientQuit:

  1193.                 signalThreadShouldExit();

  1194.                 callback(ENGINE_CALLBACK_QUIT, 0, 0, 0, 0.0f, nullptr);

  1195.                 break;

  1196.             }

  1197.         }

  1198.     }

  1199. 

  1200.     // -------------------------------------------------------------------

  1201. 

  1202. protected:

  1203.     void run() override

  1204.     {

  1205.         bool quitReceived = false;

  1206. 

  1207.         for (; ! threadShouldExit();)

  1208.         {

  1209.             const BridgeRtClientControl::WaitHelper helper(fShmRtClientControl);

  1210. 

  1211.             if (! helper.ok)

  1212.                 continue;

  1213. 

  1214.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1215.             {

  1216.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1217.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1218. 

  1219. #ifdef DEBUG

  1220.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1221.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1222.                 }

  1223. #endif

  1224. 

  1225.                 switch (opcode)

  1226.                 {

  1227.                 case kPluginBridgeRtClientNull:

  1228.                     break;

  1229. 

  1230.                 case kPluginBridgeRtClientSetAudioPool: {

  1231.                     if (fShmAudioPool.data != nullptr)

  1232.                     {

  1233.                         jackbridge_shm_unmap(fShmAudioPool.shm, fShmAudioPool.data);

  1234.                         fShmAudioPool.data = nullptr;

  1235.                     }

  1236.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1237.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1238.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1239.                     break;

  1240.                 }

  1241. 

  1242.                 case kPluginBridgeRtClientControlEventParameter: {

  1243.                     const uint32_t time(fShmRtClientControl.readUInt());

  1244.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1245.                     const uint16_t param(fShmRtClientControl.readUShort());

  1246.                     const float    value(fShmRtClientControl.readFloat());

  1247. 

  1248.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1249.                     {

  1250.                         event->type    = kEngineEventTypeControl;

  1251.                         event->time    = time;

  1252.                         event->channel = channel;

  1253.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1254.                         event->ctrl.param = param;

  1255.                         event->ctrl.value = value;

  1256.                     }

  1257.                     break;

  1258.                 }

  1259. 

  1260.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1261.                     const uint32_t time(fShmRtClientControl.readUInt());

  1262.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1263.                     const uint16_t index(fShmRtClientControl.readUShort());

  1264. 

  1265.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1266.                     {

  1267.                         event->type    = kEngineEventTypeControl;

  1268.                         event->time    = time;

  1269.                         event->channel = channel;

  1270.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1271.                         event->ctrl.param = index;

  1272.                         event->ctrl.value = 0.0f;

  1273.                     }

  1274.                     break;

  1275.                 }

  1276. 

  1277.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1278.                     const uint32_t time(fShmRtClientControl.readUInt());

  1279.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1280.                     const uint16_t index(fShmRtClientControl.readUShort());

  1281. 

  1282.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1283.                     {

  1284.                         event->type    = kEngineEventTypeControl;

  1285.                         event->time    = time;

  1286.                         event->channel = channel;

  1287.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1288.                         event->ctrl.param = index;

  1289.                         event->ctrl.value = 0.0f;

  1290.                     }

  1291.                     break;

  1292.                 }

  1293. 

  1294.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1295.                     const uint32_t time(fShmRtClientControl.readUInt());

  1296.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1297. 

  1298.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1299.                     {

  1300.                         event->type    = kEngineEventTypeControl;

  1301.                         event->time    = time;

  1302.                         event->channel = channel;

  1303.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1304.                         event->ctrl.param = 0;

  1305.                         event->ctrl.value = 0.0f;

  1306.                     }

  1307.                 }   break;

  1308. 

  1309.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

  1310.                     const uint32_t time(fShmRtClientControl.readUInt());

  1311.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1312. 

  1313.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1314.                     {

  1315.                         event->type    = kEngineEventTypeControl;

  1316.                         event->time    = time;

  1317.                         event->channel = channel;

  1318.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1319.                         event->ctrl.param = 0;

  1320.                         event->ctrl.value = 0.0f;

  1321.                     }

  1322.                 }   break;

  1323. 

  1324.                 case kPluginBridgeRtClientMidiEvent: {

  1325.                     const uint32_t time(fShmRtClientControl.readUInt());

  1326.                     const uint8_t  port(fShmRtClientControl.readByte());

  1327.                     const uint8_t  size(fShmRtClientControl.readByte());

  1328.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1329. 

  1330.                     uint8_t data[size];

  1331. 

  1332.                     for (uint8_t i=0; i<size; ++i)

  1333.                         data[i] = fShmRtClientControl.readByte();

  1334. 

  1335.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1336.                     {

  1337.                         event->type    = kEngineEventTypeMidi;

  1338.                         event->time    = time;

  1339.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1340. 

  1341.                         event->midi.port = port;

  1342.                         event->midi.size = size;

  1343. 

  1344.                         if (size > EngineMidiEvent::kDataSize)

  1345.                         {

  1346.                             event->midi.dataExt = data;

  1347.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1348.                         }

  1349.                         else

  1350.                         {

  1351.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1352. 

  1353.                             uint8_t i=1;

  1354.                             for (; i < size; ++i)

  1355.                                 event->midi.data[i] = data[i];

  1356.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1357.                                 event->midi.data[i] = 0;

  1358. 

  1359.                             event->midi.dataExt = nullptr;

  1360.                         }

  1361.                     }

  1362.                     break;

  1363.                 }

  1364. 

  1365.                 case kPluginBridgeRtClientProcess: {

  1366.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1367. 

  1368.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(false))

  1369.                     {

  1370.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1371. 

  1372.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1373.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1374.                         const uint32_t cvInCount(plugin->getCVInCount());

  1375.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1376. 

  1377.                         const float* audioIn[audioInCount];

  1378.                         /* */ float* audioOut[audioOutCount];

  1379.                         const float* cvIn[cvInCount];

  1380.                         /* */ float* cvOut[cvOutCount];

  1381. 

  1382.                         float* fdata = fShmAudioPool.data;

  1383. 

  1384.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1385.                             audioIn[i] = fdata;

  1386.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1387.                             audioOut[i] = fdata;

  1388. 

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

  1390.                             cvIn[i] = fdata;

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

  1392.                             cvOut[i] = fdata;

  1393. 

  1394.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1395. 

  1396.                         timeInfo.playing = bridgeTimeInfo.playing;

  1397.                         timeInfo.frame   = bridgeTimeInfo.frame;

  1398.                         timeInfo.usecs   = bridgeTimeInfo.usecs;

  1399.                         timeInfo.valid   = bridgeTimeInfo.valid;

  1400. 

  1401.                         if (timeInfo.valid & EngineTimeInfo::kValidBBT)

  1402.                         {

  1403.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1404.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1405.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1406. 

  1407.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1408.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1409. 

  1410.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1411.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1412.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1413.                         }

  1414. 

  1415.                         plugin->initBuffers();

  1416.                         plugin->process(audioIn, audioOut, cvIn, cvOut, pData->bufferSize);

  1417.                         plugin->unlock();

  1418.                     }

  1419. 

  1420.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1421.                     carla_zeroBytes(midiData, kBridgeRtClientDataMidiOutSize);

  1422.                     std::size_t curMidiDataPos = 0;

  1423. 

  1424.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1425.                         carla_zeroStructs(pData->events.in,  kMaxEngineEventInternalCount);

  1426. 

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

  1428.                     {

  1429.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1430.                         {

  1431.                             const EngineEvent& event(pData->events.out[i]);

  1432. 

  1433.                             if (event.type == kEngineEventTypeNull)

  1434.                                 break;

  1435. 

  1436.                             if (event.type == kEngineEventTypeControl)

  1437.                             {

  1438.                                 uint8_t size;

  1439.                                 uint8_t data[3];

  1440.                                 event.ctrl.convertToMidiData(event.channel, size, data);

  1441.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1442. 

  1443.                                 if (curMidiDataPos + 1U /* size*/ + 4U /* time */ + size >= kBridgeRtClientDataMidiOutSize)

  1444.                                     break;

  1445. 

  1446.                                 // set size

  1447.                                 *midiData++ = size;

  1448. 

  1449.                                 // set time

  1450.                                 *(uint32_t*)midiData = event.time;

  1451.                                 midiData = midiData + 4;

  1452. 

  1453.                                 // set data

  1454.                                 for (uint8_t j=0; j<size; ++j)

  1455.                                     *midiData++ = data[j];

  1456. 

  1457.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + size;

  1458.                             }

  1459.                             else if (event.type == kEngineEventTypeMidi)

  1460.                             {

  1461.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1462. 

  1463.                                 if (curMidiDataPos + 1 /* size*/ + 4 /* time */ + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1464.                                     break;

  1465. 

  1466.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1467. 

  1468.                                 // set size

  1469.                                 *midiData++ = _midiEvent.size;

  1470. 

  1471.                                 // set time

  1472.                                 *(uint32_t*)midiData = event.time;

  1473.                                 midiData = midiData + 4;

  1474. 

  1475.                                 // set data

  1476.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1477. 

  1478.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1479.                                     *midiData++ = _midiData[j];

  1480. 

  1481.                                 curMidiDataPos += 1U /* size*/ + 4U /* time */ + _midiEvent.size;

  1482.                             }

  1483.                         }

  1484. 

  1485.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1486.                     }

  1487. 

  1488.                 }   break;

  1489. 

  1490.                 case kPluginBridgeRtClientQuit: {

  1491.                     quitReceived = true;

  1492.                     signalThreadShouldExit();

  1493.                 }   break;

  1494.                 }

  1495.             }

  1496.         }

  1497. 

  1498.         callback(ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0.0f, nullptr);

  1499. 

  1500.         if (! quitReceived)

  1501.         {

  1502.             const char* const message("Plugin bridge error, process thread has stopped");

  1503.             const std::size_t messageSize(std::strlen(message));

  1504. 

  1505.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1506.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1507.             fShmNonRtServerControl.writeUInt(messageSize);

  1508.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1509.             fShmNonRtServerControl.commitWrite();

  1510.         }

  1511.     }

  1512. 

  1513.     // called from process thread above

  1514.     EngineEvent* getNextFreeInputEvent() const noexcept

  1515.     {

  1516.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1517.         {

  1518.             EngineEvent* const event(&pData->events.in[i]);

  1519. 

  1520.             if (event->type == kEngineEventTypeNull)

  1521.                 return event;

  1522.         }

  1523.         return nullptr;

  1524.     }

  1525. 

  1526.     // -------------------------------------------------------------------

  1527. 

  1528. private:

  1529.     BridgeAudioPool          fShmAudioPool;

  1530.     BridgeRtClientControl    fShmRtClientControl;

  1531.     BridgeNonRtClientControl fShmNonRtClientControl;

  1532.     BridgeNonRtServerControl fShmNonRtServerControl;

  1533. 

  1534.     bool fIsOffline;

  1535.     bool fFirstIdle;

  1536.     int64_t fLastPingTime;

  1537. 

  1538.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1539. };

  1540. 

  1541. // -----------------------------------------------------------------------

  1542. 

  1543. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1544. {

  1545.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1546. }

  1547. 

  1548. // -----------------------------------------------------------------------

  1549. 

  1550. #ifdef BRIDGE_PLUGIN

  1551. CarlaPlugin* CarlaPlugin::newNative(const CarlaPlugin::Initializer&)              { return nullptr; }

  1552. CarlaPlugin* CarlaPlugin::newFileGIG(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

  1553. CarlaPlugin* CarlaPlugin::newFileSF2(const CarlaPlugin::Initializer&, const bool) { return nullptr; }

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

  1555. #endif

  1556. 

  1557. CARLA_BACKEND_END_NAMESPACE

  1558. 

  1559. // -----------------------------------------------------------------------

  1560. 

  1561. #if defined(CARLA_OS_WIN) && ! defined(__WINE__)

  1562. extern "C" __declspec (dllexport)

  1563. #else

  1564. extern "C" __attribute__ ((visibility("default")))

  1565. #endif

  1566. void carla_register_native_plugin_carla();

  1567. void carla_register_native_plugin_carla(){}

  1568. 

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