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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) 2011-2019 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 "CarlaEngineClient.hpp"

  23. #include "CarlaPlugin.hpp"

  24. 

  25. #include "CarlaBackendUtils.hpp"

  26. #include "CarlaBase64Utils.hpp"

  27. #include "CarlaBridgeUtils.hpp"

  28. #include "CarlaMIDI.h"

  29. 

  30. #ifdef __SSE2_MATH__

  31. # include <xmmintrin.h>

  32. #endif

  33. 

  34. #include "water/files/File.h"

  35. #include "water/misc/Time.h"

  36. 

  37. // must be last

  38. #include "jackbridge/JackBridge.hpp"

  39. 

  40. using water::File;

  41. using water::MemoryBlock;

  42. using water::String;

  43. using water::Time;

  44. 

  45. CARLA_BACKEND_START_NAMESPACE

  46. 

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

  48. 

  49. // just want to access private options...

  50. struct CarlaPlugin::ProtectedData {

  51.     CarlaEngine* const engine;

  52.     CarlaEngineClient* client;

  53.     uint id, hints, options;

  54.     // ...etc

  55. };

  56. 

  57. // -----------------------------------------------------------------------

  58. // Bridge Engine client

  59. 

  60. struct LatencyChangedCallback {

  61.     virtual ~LatencyChangedCallback() noexcept {}

  62.     virtual void latencyChanged(const uint32_t samples) noexcept = 0;

  63. };

  64. 

  65. class CarlaEngineBridgeClient : public CarlaEngineClientForSubclassing

  66. {

  67. public:

  68. #ifndef BUILD_BRIDGE_ALTERNATIVE_ARCH

  69.     CarlaEngineBridgeClient(const CarlaEngine& engine, EngineInternalGraph& egraph, CarlaPlugin* const plugin, LatencyChangedCallback* const cb)

  70.         : CarlaEngineClientForSubclassing(engine, egraph, plugin),

  71.           fLatencyCallback(cb) {}

  72. #else

  73.     CarlaEngineBridgeClient(const CarlaEngine& engine, LatencyChangedCallback* const cb)

  74.         : CarlaEngineClientForSubclassing(engine),

  75.           fLatencyCallback(cb) {}

  76. #endif

  77. 

  78. protected:

  79.     void setLatency(const uint32_t samples) noexcept override

  80.     {

  81.         if (getLatency() == samples)

  82.             return;

  83. 

  84.         fLatencyCallback->latencyChanged(samples);

  85.         CarlaEngineClient::setLatency(samples);

  86.     }

  87. 

  88. private:

  89.     LatencyChangedCallback* const fLatencyCallback;

  90. 

  91.     CARLA_DECLARE_NON_COPY_CLASS(CarlaEngineBridgeClient)

  92. };

  93. 

  94. // -------------------------------------------------------------------

  95. 

  96. class CarlaEngineBridge : public CarlaEngine,

  97.                           private CarlaThread,

  98.                           private LatencyChangedCallback

  99. {

  100. public:

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

  102.         : CarlaEngine(),

  103.           CarlaThread("CarlaEngineBridge"),

  104.           fShmAudioPool(),

  105.           fShmRtClientControl(),

  106.           fShmNonRtClientControl(),

  107.           fShmNonRtServerControl(),

  108.           fBaseNameAudioPool(audioPoolBaseName),

  109.           fBaseNameRtClientControl(rtClientBaseName),

  110.           fBaseNameNonRtClientControl(nonRtClientBaseName),

  111.           fBaseNameNonRtServerControl(nonRtServerBaseName),

  112.           fClosingDown(false),

  113.           fIsOffline(false),

  114.           fFirstIdle(true),

  115.           fLastPingTime(-1)

  116.     {

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

  118.     }

  119. 

  120.     ~CarlaEngineBridge() noexcept override

  121.     {

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

  123. 

  124.         clear();

  125.     }

  126. 

  127.     // -------------------------------------

  128.     // CarlaEngine virtual calls

  129. 

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

  131.     {

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

  133. 

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

  135.         {

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

  137.             return false;

  138.         }

  139. 

  140.         if (! fShmAudioPool.attachClient(fBaseNameAudioPool))

  141.         {

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

  143.             return false;

  144.         }

  145. 

  146.         if (! fShmRtClientControl.attachClient(fBaseNameRtClientControl))

  147.         {

  148.             clear();

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

  150.             return false;

  151.         }

  152. 

  153.         if (! fShmRtClientControl.mapData())

  154.         {

  155.             clear();

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

  157.             return false;

  158.         }

  159. 

  160.         if (! fShmNonRtClientControl.attachClient(fBaseNameNonRtClientControl))

  161.         {

  162.             clear();

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

  164.             return false;

  165.         }

  166. 

  167.         if (! fShmNonRtClientControl.mapData())

  168.         {

  169.             clear();

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

  171.             return false;

  172.         }

  173. 

  174.         if (! fShmNonRtServerControl.attachClient(fBaseNameNonRtServerControl))

  175.         {

  176.             clear();

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

  178.             return false;

  179.         }

  180. 

  181.         if (! fShmNonRtServerControl.mapData())

  182.         {

  183.             clear();

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

  185.             return false;

  186.         }

  187. 

  188.         PluginBridgeNonRtClientOpcode opcode;

  189. 

  190.         opcode = fShmNonRtClientControl.readOpcode();

  191.         CARLA_SAFE_ASSERT_RETURN(opcode == kPluginBridgeNonRtClientVersion, false);

  192. 

  193.         const uint32_t apiVersion = fShmNonRtClientControl.readUInt();

  194.         CARLA_SAFE_ASSERT_RETURN(apiVersion >= CARLA_PLUGIN_BRIDGE_API_VERSION_MINIMUM, false);

  195. 

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

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

  198. 

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

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

  201. 

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

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

  204. 

  205.         if (shmRtClientDataSize != sizeof(BridgeRtClientData) ||

  206.             shmNonRtClientDataSize != sizeof(BridgeNonRtClientData) ||

  207.             shmNonRtServerDataSize != sizeof(BridgeNonRtServerData))

  208.         {

  209.             carla_stderr2("CarlaEngineBridge: data size mismatch");

  210.             return false;

  211.         }

  212. 

  213.         opcode = fShmNonRtClientControl.readOpcode();

  214.         CARLA_SAFE_ASSERT_RETURN(opcode == kPluginBridgeNonRtClientInitialSetup, false);

  215. 

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

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

  218. 

  219.         if (pData->bufferSize == 0 || carla_isZero(pData->sampleRate))

  220.         {

  221.             carla_stderr2("CarlaEngineBridge: invalid empty state");

  222.             return false;

  223.         }

  224. 

  225.         pData->initTime(nullptr);

  226. 

  227.         // tell backend we're live

  228.         {

  229.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  230. 

  231.             // kPluginBridgeNonRtServerVersion was added in API 7

  232.             if (apiVersion >= 7)

  233.             {

  234.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerVersion);

  235.                 fShmNonRtServerControl.writeUInt(CARLA_PLUGIN_BRIDGE_API_VERSION_CURRENT);

  236.             }

  237.             else

  238.             {

  239.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  240.             }

  241. 

  242.             fShmNonRtServerControl.commitWrite();

  243.         }

  244. 

  245.         startThread(true);

  246.         return true;

  247.     }

  248. 

  249.     bool close() override

  250.     {

  251.         carla_debug("CarlaEngineBridge::close()");

  252.         fLastPingTime = -1;

  253. 

  254.         CarlaEngine::close();

  255. 

  256.         stopThread(5000);

  257.         clear();

  258. 

  259.         return true;

  260.     }

  261. 

  262.     bool isRunning() const noexcept override

  263.     {

  264.         if (fClosingDown)

  265.             return false;

  266. 

  267.         return isThreadRunning() || ! fFirstIdle;

  268.     }

  269. 

  270.     bool isOffline() const noexcept override

  271.     {

  272.         return fIsOffline;

  273.     }

  274. 

  275.     EngineType getType() const noexcept override

  276.     {

  277.         return kEngineTypeBridge;

  278.     }

  279. 

  280.     const char* getCurrentDriverName() const noexcept override

  281.     {

  282.         return "Bridge";

  283.     }

  284. 

  285.     void touchPluginParameter(const uint id, const uint32_t parameterId, const bool touch) noexcept override

  286.     {

  287.         CARLA_SAFE_ASSERT_RETURN(id == 0,);

  288. 

  289.         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  290.         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterTouch);

  291.         fShmNonRtServerControl.writeUInt(parameterId);

  292.         fShmNonRtServerControl.writeBool(touch);

  293.         fShmNonRtServerControl.commitWrite();

  294.     }

  295. 

  296.     CarlaEngineClient* addClient(CarlaPlugin* const plugin) override

  297.     {

  298. #ifndef BUILD_BRIDGE_ALTERNATIVE_ARCH

  299.         return new CarlaEngineBridgeClient(*this, pData->graph, plugin, this);

  300. #else

  301.         return new CarlaEngineBridgeClient(*this, this);

  302. #endif

  303.     }

  304. 

  305.     void idle() noexcept override

  306.     {

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

  308. 

  309.         if (plugin == nullptr)

  310.         {

  311.             if (const uint32_t length = static_cast<uint32_t>(pData->lastError.length()))

  312.             {

  313.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  314.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  315.                 fShmNonRtServerControl.writeUInt(length);

  316.                 fShmNonRtServerControl.writeCustomData(pData->lastError.buffer(), length);

  317.                 fShmNonRtServerControl.commitWrite();

  318.             }

  319. 

  320.             signalThreadShouldExit();

  321.             callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  322.             return;

  323.         }

  324. 

  325.         const bool wasFirstIdle(fFirstIdle);

  326. 

  327.         if (wasFirstIdle)

  328.         {

  329.             fFirstIdle = false;

  330.             fLastPingTime = Time::currentTimeMillis();

  331.             CARLA_SAFE_ASSERT(fLastPingTime > 0);

  332. 

  333.             char bufStr[STR_MAX+1];

  334.             carla_zeroChars(bufStr, STR_MAX+1);

  335. 

  336.             uint32_t bufStrSize;

  337. 

  338.             const CarlaEngineClient* const client(plugin->getEngineClient());

  339.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  340. 

  341.             // kPluginBridgeNonRtServerPluginInfo1

  342.             {

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

  344.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo1);

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

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

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

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

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

  350.                 fShmNonRtServerControl.commitWrite();

  351.             }

  352. 

  353.             // kPluginBridgeNonRtServerPluginInfo2

  354.             {

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

  356.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPluginInfo2);

  357. 

  358.                 if (! plugin->getRealName(bufStr))

  359.                     bufStr[0] = '\0';

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

  361.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  362.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  363. 

  364.                 if (! plugin->getLabel(bufStr))

  365.                     bufStr[0] = '\0';

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

  367.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  368.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  369. 

  370.                 if (! plugin->getMaker(bufStr))

  371.                     bufStr[0] = '\0';

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

  373.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  374.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  375. 

  376.                 if (! plugin->getCopyright(bufStr))

  377.                     bufStr[0] = '\0';

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

  379.                 fShmNonRtServerControl.writeUInt(bufStrSize);

  380.                 fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  381. 

  382.                 fShmNonRtServerControl.commitWrite();

  383.             }

  384. 

  385.             // kPluginBridgeNonRtServerAudioCount

  386.             {

  387.                 const uint32_t aIns  = plugin->getAudioInCount();

  388.                 const uint32_t aOuts = plugin->getAudioOutCount();

  389. 

  390.                 // uint/ins, uint/outs

  391.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerAudioCount);

  392.                 fShmNonRtServerControl.writeUInt(aIns);

  393.                 fShmNonRtServerControl.writeUInt(aOuts);

  394.                 fShmNonRtServerControl.commitWrite();

  395. 

  396.                 // kPluginBridgeNonRtServerPortName

  397.                 for (uint32_t i=0; i<aIns; ++i)

  398.                 {

  399.                     const char* const portName(client->getAudioPortName(true, i));

  400.                     CARLA_SAFE_ASSERT_CONTINUE(portName != nullptr && portName[0] != '\0');

  401. 

  402.                     // byte/type, uint/index, uint/size, str[] (name)

  403.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  404.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioInput);

  405.                     fShmNonRtServerControl.writeUInt(i);

  406. 

  407.                     bufStrSize = static_cast<uint32_t>(std::strlen(portName));

  408.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  409.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  410.                 }

  411. 

  412.                 // kPluginBridgeNonRtServerPortName

  413.                 for (uint32_t i=0; i<aOuts; ++i)

  414.                 {

  415.                     const char* const portName(client->getAudioPortName(false, i));

  416.                     CARLA_SAFE_ASSERT_CONTINUE(portName != nullptr && portName[0] != '\0');

  417. 

  418.                     // byte/type, uint/index, uint/size, str[] (name)

  419.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPortName);

  420.                     fShmNonRtServerControl.writeByte(kPluginBridgePortAudioOutput);

  421.                     fShmNonRtServerControl.writeUInt(i);

  422. 

  423.                     bufStrSize = static_cast<uint32_t>(std::strlen(portName));

  424.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  425.                     fShmNonRtServerControl.writeCustomData(portName, bufStrSize);

  426.                 }

  427.             }

  428. 

  429.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  430. 

  431.             // kPluginBridgeNonRtServerMidiCount

  432.             {

  433.                 // uint/ins, uint/outs

  434.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiCount);

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

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

  437.                 fShmNonRtServerControl.commitWrite();

  438.             }

  439. 

  440.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  441. 

  442.             // kPluginBridgeNonRtServerCvCount

  443.             {

  444.                 // uint/ins, uint/outs

  445.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCvCount);

  446.                 fShmNonRtServerControl.writeUInt(plugin->getCVInCount());

  447.                 fShmNonRtServerControl.writeUInt(plugin->getCVOutCount());

  448.                 fShmNonRtServerControl.commitWrite();

  449.             }

  450. 

  451.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  452. 

  453.             // kPluginBridgeNonRtServerParameter*

  454.             if (const uint32_t count = std::min(pData->options.maxParameters, plugin->getParameterCount()))

  455.             {

  456.                 // uint/count

  457.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterCount);

  458.                 fShmNonRtServerControl.writeUInt(count);

  459.                 fShmNonRtServerControl.commitWrite();

  460. 

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

  462.                 {

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

  464. 

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

  466.                         continue;

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

  468.                         continue;

  469. 

  470.                     // kPluginBridgeNonRtServerParameterData1

  471.                     {

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

  473.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData1);

  474.                         fShmNonRtServerControl.writeUInt(i);

  475.                         fShmNonRtServerControl.writeInt(paramData.rindex);

  476.                         fShmNonRtServerControl.writeUInt(paramData.type);

  477.                         fShmNonRtServerControl.writeUInt(paramData.hints);

  478.                         fShmNonRtServerControl.writeShort(paramData.mappedControlIndex);

  479.                         fShmNonRtServerControl.commitWrite();

  480.                     }

  481. 

  482.                     // kPluginBridgeNonRtServerParameterData2

  483.                     {

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

  485.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterData2);

  486.                         fShmNonRtServerControl.writeUInt(i);

  487. 

  488.                         if (! plugin->getParameterName(i, bufStr))

  489.                             std::snprintf(bufStr, STR_MAX, "Param %u", i+1);

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

  491.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  492.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  493. 

  494.                         if (! plugin->getParameterSymbol(i, bufStr))

  495.                             bufStr[0] = '\0';

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

  497.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  498.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  499. 

  500.                         if (! plugin->getParameterUnit(i, bufStr))

  501.                             bufStr[0] = '\0';

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

  503.                         fShmNonRtServerControl.writeUInt(bufStrSize);

  504.                         fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  505. 

  506.                         fShmNonRtServerControl.commitWrite();

  507.                     }

  508. 

  509.                     // kPluginBridgeNonRtServerParameterRanges

  510.                     {

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

  512. 

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

  514.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterRanges);

  515.                         fShmNonRtServerControl.writeUInt(i);

  516.                         fShmNonRtServerControl.writeFloat(paramRanges.def);

  517.                         fShmNonRtServerControl.writeFloat(paramRanges.min);

  518.                         fShmNonRtServerControl.writeFloat(paramRanges.max);

  519.                         fShmNonRtServerControl.writeFloat(paramRanges.step);

  520.                         fShmNonRtServerControl.writeFloat(paramRanges.stepSmall);

  521.                         fShmNonRtServerControl.writeFloat(paramRanges.stepLarge);

  522.                         fShmNonRtServerControl.commitWrite();

  523.                     }

  524. 

  525.                     // kPluginBridgeNonRtServerParameterValue2

  526.                     {

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

  528.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  529.                         fShmNonRtServerControl.writeUInt(i);

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

  531.                         fShmNonRtServerControl.commitWrite();

  532.                     }

  533. 

  534.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  535.                 }

  536.             }

  537. 

  538.             // kPluginBridgeNonRtServerProgram*

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

  540.             {

  541.                 // uint/count

  542.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramCount);

  543.                 fShmNonRtServerControl.writeUInt(count);

  544.                 fShmNonRtServerControl.commitWrite();

  545. 

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

  547.                 {

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

  549.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerProgramName);

  550.                     fShmNonRtServerControl.writeUInt(i);

  551. 

  552.                     if (plugin->getProgramName(i, bufStr))

  553.                         bufStr[0] = '\0';

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

  555.                     fShmNonRtServerControl.writeUInt(bufStrSize);

  556.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrSize);

  557. 

  558.                     fShmNonRtServerControl.commitWrite();

  559.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  560.                 }

  561.             }

  562. 

  563.             // kPluginBridgeNonRtServerMidiProgram*

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

  565.             {

  566.                 // uint/count

  567.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramCount);

  568.                 fShmNonRtServerControl.writeUInt(count);

  569.                 fShmNonRtServerControl.commitWrite();

  570. 

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

  572.                 {

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

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

  575. 

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

  577.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerMidiProgramData);

  578.                     fShmNonRtServerControl.writeUInt(i);

  579.                     fShmNonRtServerControl.writeUInt(mpData.bank);

  580.                     fShmNonRtServerControl.writeUInt(mpData.program);

  581. 

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

  583.                     fShmNonRtServerControl.writeUInt(bufStrSize);

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

  585. 

  586.                     fShmNonRtServerControl.commitWrite();

  587.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  588.                 }

  589.             }

  590. 

  591.             if (const uint32_t latency = plugin->getLatencyInFrames())

  592.             {

  593.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  594.                 fShmNonRtServerControl.writeUInt(latency);

  595.                 fShmNonRtServerControl.commitWrite();

  596.             }

  597. 

  598.             // ready!

  599.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerReady);

  600.             fShmNonRtServerControl.commitWrite();

  601.             fShmNonRtServerControl.waitIfDataIsReachingLimit();

  602. 

  603.             carla_stdout("Carla Bridge Ready!");

  604.             fLastPingTime = Time::currentTimeMillis();

  605.         }

  606. 

  607.         // send parameter outputs

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

  609.         {

  610.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  611. 

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

  613.             {

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

  615.                     continue;

  616. 

  617.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue2);

  618.                 fShmNonRtServerControl.writeUInt(i);

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

  620. 

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

  622.                 if (! fShmNonRtServerControl.commitWrite())

  623.                     break;

  624.             }

  625.         }

  626. 

  627.         CarlaEngine::idle();

  628. 

  629.         try {

  630.             handleNonRtData();

  631.         } CARLA_SAFE_EXCEPTION("handleNonRtData");

  632. 

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

  634.         {

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

  636.             signalThreadShouldExit();

  637.             callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  638.         }

  639.     }

  640. 

  641.     void callback(const bool sendHost, const bool sendOsc,

  642.                   const EngineCallbackOpcode action, const uint pluginId,

  643.                   const int value1, const int value2, const int value3,

  644.                   const float valuef, const char* const valueStr) noexcept override

  645.     {

  646.         CarlaEngine::callback(sendHost, sendOsc, action, pluginId, value1, value2, value3, valuef, valueStr);

  647. 

  648.         if (fClosingDown)

  649.             return;

  650. 

  651.         switch (action)

  652.         {

  653.         // uint/index float/value

  654.         case ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED: {

  655.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  656.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  657.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

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

  659.             fShmNonRtServerControl.writeFloat(valuef);

  660.             fShmNonRtServerControl.commitWrite();

  661.         }   break;

  662. 

  663.         // uint/index float/value

  664.         case ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED: {

  665.             CARLA_SAFE_ASSERT_BREAK(value1 >= 0);

  666.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  667.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerDefaultValue);

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

  669.             fShmNonRtServerControl.writeFloat(valuef);

  670.             fShmNonRtServerControl.commitWrite();

  671.         }   break;

  672. 

  673.         // int/index

  674.         case ENGINE_CALLBACK_PROGRAM_CHANGED: {

  675.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  676.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  677.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentProgram);

  678.             fShmNonRtServerControl.writeInt(value1);

  679.             fShmNonRtServerControl.commitWrite();

  680.         }   break;

  681. 

  682.         // int/index

  683.         case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED: {

  684.             CARLA_SAFE_ASSERT_BREAK(value1 >= -1);

  685.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  686.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerCurrentMidiProgram);

  687.             fShmNonRtServerControl.writeInt(value1);

  688.             fShmNonRtServerControl.commitWrite();

  689.         }   break;

  690. 

  691.         case ENGINE_CALLBACK_UI_STATE_CHANGED:

  692.             if (value1 != 1)

  693.             {

  694.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  695.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerUiClosed);

  696.                 fShmNonRtServerControl.commitWrite();

  697.             }

  698.             break;

  699. 

  700.         case ENGINE_CALLBACK_RELOAD_PARAMETERS:

  701.             if (CarlaPlugin* const plugin = pData->plugins[0].plugin)

  702.             {

  703.                 if (const uint32_t count = std::min(pData->options.maxParameters, plugin->getParameterCount()))

  704.                 {

  705.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  706. 

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

  708.                     {

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

  710. 

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

  712.                             continue;

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

  714.                             continue;

  715. 

  716.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerParameterValue);

  717.                         fShmNonRtServerControl.writeUInt(i);

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

  719.                         fShmNonRtServerControl.commitWrite();

  720. 

  721.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  722.                     }

  723.                 }

  724.             }

  725.             break;

  726. 

  727.         default:

  728.             break;

  729.         }

  730.     }

  731. 

  732.     // -------------------------------------------------------------------

  733. 

  734.     void clear() noexcept

  735.     {

  736.         fShmAudioPool.clear();

  737.         fShmRtClientControl.clear();

  738.         fShmNonRtClientControl.clear();

  739.         fShmNonRtServerControl.clear();

  740.     }

  741. 

  742.     void handleNonRtData()

  743.     {

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

  745.         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);

  746. 

  747.         for (; fShmNonRtClientControl.isDataAvailableForReading();)

  748.         {

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

  750. 

  751. #ifdef DEBUG

  752.             if (opcode != kPluginBridgeNonRtClientPing) {

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

  754.             }

  755. #endif

  756. 

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

  758.                 fLastPingTime = Time::currentTimeMillis();

  759. 

  760.             switch (opcode)

  761.             {

  762.             case kPluginBridgeNonRtClientNull:

  763.                 break;

  764. 

  765.             case kPluginBridgeNonRtClientVersion: {

  766.                 const uint apiVersion = fShmNonRtServerControl.readUInt();

  767.                 CARLA_SAFE_ASSERT_UINT2(apiVersion >= CARLA_PLUGIN_BRIDGE_API_VERSION_MINIMUM,

  768.                                         apiVersion, CARLA_PLUGIN_BRIDGE_API_VERSION_MINIMUM);

  769.             }   break;

  770. 

  771.             case kPluginBridgeNonRtClientPing: {

  772.                 const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  773. 

  774.                 fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerPong);

  775.                 fShmNonRtServerControl.commitWrite();

  776.             }   break;

  777. 

  778.             case kPluginBridgeNonRtClientPingOnOff: {

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

  780. 

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

  782.             }   break;

  783. 

  784.             case kPluginBridgeNonRtClientActivate:

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

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

  787.                 break;

  788. 

  789.             case kPluginBridgeNonRtClientDeactivate:

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

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

  792.                 break;

  793. 

  794.             case kPluginBridgeNonRtClientInitialSetup:

  795.                 // should never happen!!

  796.                 fShmNonRtServerControl.readUInt();

  797.                 fShmNonRtServerControl.readDouble();

  798.                 break;

  799. 

  800.             case kPluginBridgeNonRtClientSetParameterValue: {

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

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

  803. 

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

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

  806.                 break;

  807.             }

  808. 

  809.             case kPluginBridgeNonRtClientSetParameterMidiChannel: {

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

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

  812. 

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

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

  815.                 break;

  816.             }

  817. 

  818.             case kPluginBridgeNonRtClientSetParameterMappedControlIndex: {

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

  820.                 const int16_t  ctrl(fShmNonRtClientControl.readShort());

  821. 

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

  823.                     plugin->setParameterMappedControlIndex(index, ctrl, false, false);

  824.                 break;

  825.             }

  826. 

  827.             case kPluginBridgeNonRtClientSetParameterMappedRange: {

  828.                 const uint32_t index   = fShmNonRtClientControl.readUInt();

  829.                 const float    minimum = fShmNonRtClientControl.readFloat();

  830.                 const float    maximum = fShmNonRtClientControl.readFloat();

  831. 

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

  833.                     plugin->setParameterMappedRange(index, minimum, maximum, false, false);

  834.                 break;

  835.             }

  836. 

  837.             case kPluginBridgeNonRtClientSetProgram: {

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

  839. 

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

  841.                     plugin->setProgram(index, true, false, false);

  842.                 break;

  843.             }

  844. 

  845.             case kPluginBridgeNonRtClientSetMidiProgram: {

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

  847. 

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

  849.                     plugin->setMidiProgram(index, true, false, false);

  850.                 break;

  851.             }

  852. 

  853.             case kPluginBridgeNonRtClientSetCustomData: {

  854.                 // type

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

  856.                 char typeStr[typeSize+1];

  857.                 carla_zeroChars(typeStr, typeSize+1);

  858.                 fShmNonRtClientControl.readCustomData(typeStr, typeSize);

  859. 

  860.                 // key

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

  862.                 char keyStr[keySize+1];

  863.                 carla_zeroChars(keyStr, keySize+1);

  864.                 fShmNonRtClientControl.readCustomData(keyStr, keySize);

  865. 

  866.                 // value

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

  868.                 char valueStr[valueSize+1];

  869.                 carla_zeroChars(valueStr, valueSize+1);

  870. 

  871.                 if (valueSize > 0)

  872.                     fShmNonRtClientControl.readCustomData(valueStr, valueSize);

  873. 

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

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

  876.                 break;

  877.             }

  878. 

  879.             case kPluginBridgeNonRtClientSetChunkDataFile: {

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

  881.                 CARLA_SAFE_ASSERT_BREAK(size > 0);

  882. 

  883.                 char chunkFilePathTry[size+1];

  884.                 carla_zeroChars(chunkFilePathTry, size+1);

  885.                 fShmNonRtClientControl.readCustomData(chunkFilePathTry, size);

  886. 

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

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

  889. 

  890.                 String chunkFilePath(chunkFilePathTry);

  891. 

  892. #ifdef CARLA_OS_WIN

  893.                 // check if running under Wine

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

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

  896. #endif

  897. 

  898.                 File chunkFile(chunkFilePath);

  899.                 CARLA_SAFE_ASSERT_BREAK(chunkFile.existsAsFile());

  900. 

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

  902.                 chunkFile.deleteFile();

  903.                 CARLA_SAFE_ASSERT_BREAK(chunkDataBase64.isNotEmpty());

  904. 

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

  906. 

  907. #ifdef CARLA_PROPER_CPP11_SUPPORT

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

  909. #else

  910.                 plugin->setChunkData(&chunk.front(), chunk.size());

  911. #endif

  912.                 break;

  913.             }

  914. 

  915.             case kPluginBridgeNonRtClientSetCtrlChannel: {

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

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

  918. 

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

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

  921.                 break;

  922.             }

  923. 

  924.             case kPluginBridgeNonRtClientSetOption: {

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

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

  927. 

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

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

  930.                 break;

  931.             }

  932. 

  933.             case kPluginBridgeNonRtClientSetOptions: {

  934.                 const uint32_t options(fShmNonRtClientControl.readUInt());

  935. 

  936.                 if (plugin != nullptr)

  937.                     plugin->pData->options = options;

  938.                 break;

  939.             }

  940. 

  941.             case kPluginBridgeNonRtClientGetParameterText: {

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

  943. 

  944.                 if (index >= 0 && plugin != nullptr && plugin->isEnabled())

  945.                 {

  946.                     char bufStr[STR_MAX+1];

  947.                     carla_zeroChars(bufStr, STR_MAX+1);

  948.                     if (! plugin->getParameterText(static_cast<uint32_t>(index), bufStr))

  949.                         bufStr[0] = '\0';

  950. 

  951.                     const uint32_t bufStrLen = static_cast<uint32_t>(std::strlen(bufStr));

  952. 

  953.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  954. 

  955.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetParameterText);

  956. 

  957.                     fShmNonRtServerControl.writeInt(index);

  958.                     fShmNonRtServerControl.writeUInt(bufStrLen);

  959.                     fShmNonRtServerControl.writeCustomData(bufStr, bufStrLen);

  960.                     fShmNonRtServerControl.commitWrite();

  961. 

  962.                     fShmNonRtServerControl.waitIfDataIsReachingLimit();

  963.                 }

  964. 

  965.                 break;

  966.             }

  967. 

  968.             case kPluginBridgeNonRtClientPrepareForSave: {

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

  970.                     break;

  971. 

  972.                 plugin->prepareForSave();

  973. 

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

  975.                 {

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

  977. 

  978.                     if (std::strcmp(cdata.type, CUSTOM_DATA_TYPE_PROPERTY) == 0)

  979.                         continue;

  980. 

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

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

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

  984. 

  985.                     {

  986.                         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  987. 

  988.                         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetCustomData);

  989. 

  990.                         fShmNonRtServerControl.writeUInt(typeLen);

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

  992. 

  993.                         fShmNonRtServerControl.writeUInt(keyLen);

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

  995. 

  996.                         fShmNonRtServerControl.writeUInt(valueLen);

  997. 

  998.                         if (valueLen > 0)

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

  1000. 

  1001.                         fShmNonRtServerControl.commitWrite();

  1002.                         fShmNonRtServerControl.waitIfDataIsReachingLimit();

  1003.                     }

  1004.                 }

  1005. 

  1006.                 if (plugin->getOptionsEnabled() & PLUGIN_OPTION_USE_CHUNKS)

  1007.                 {

  1008.                     void* data = nullptr;

  1009.                     if (const std::size_t dataSize = plugin->getChunkData(&data))

  1010.                     {

  1011.                         CARLA_SAFE_ASSERT_BREAK(data != nullptr);

  1012. 

  1013.                         CarlaString dataBase64 = CarlaString::asBase64(data, dataSize);

  1014.                         CARLA_SAFE_ASSERT_BREAK(dataBase64.length() > 0);

  1015. 

  1016.                         String filePath(File::getSpecialLocation(File::tempDirectory).getFullPathName());

  1017. 

  1018.                         filePath += CARLA_OS_SEP_STR ".CarlaChunk_";

  1019.                         filePath += fShmAudioPool.getFilenameSuffix();

  1020. 

  1021.                         if (File(filePath).replaceWithText(dataBase64.buffer()))

  1022.                         {

  1023.                             const uint32_t ulength(static_cast<uint32_t>(filePath.length()));

  1024. 

  1025.                             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1026. 

  1027.                             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetChunkDataFile);

  1028.                             fShmNonRtServerControl.writeUInt(ulength);

  1029.                             fShmNonRtServerControl.writeCustomData(filePath.toRawUTF8(), ulength);

  1030.                             fShmNonRtServerControl.commitWrite();

  1031.                         }

  1032.                     }

  1033.                 }

  1034. 

  1035.                 {

  1036.                     const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1037. 

  1038.                     fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSaved);

  1039.                     fShmNonRtServerControl.commitWrite();

  1040.                 }

  1041.                 break;

  1042.             }

  1043. 

  1044.             case kPluginBridgeNonRtClientRestoreLV2State:

  1045.                 if (plugin != nullptr && plugin->isEnabled())

  1046.                     plugin->restoreLV2State();

  1047.                 break;

  1048. 

  1049.             case kPluginBridgeNonRtClientShowUI:

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

  1051.                     plugin->showCustomUI(true);

  1052.                 break;

  1053. 

  1054.             case kPluginBridgeNonRtClientHideUI:

  1055.                 if (plugin != nullptr && plugin->isEnabled())

  1056.                     plugin->showCustomUI(false);

  1057.                 break;

  1058. 

  1059.             case kPluginBridgeNonRtClientUiParameterChange: {

  1060.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1061.                 const float    value(fShmNonRtClientControl.readFloat());

  1062. 

  1063.                 if (plugin != nullptr && plugin->isEnabled())

  1064.                     plugin->uiParameterChange(index, value);

  1065.                 break;

  1066.             }

  1067. 

  1068.             case kPluginBridgeNonRtClientUiProgramChange: {

  1069.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1070. 

  1071.                 if (plugin != nullptr && plugin->isEnabled())

  1072.                     plugin->uiProgramChange(index);

  1073.                 break;

  1074.             }

  1075. 

  1076.             case kPluginBridgeNonRtClientUiMidiProgramChange: {

  1077.                 const uint32_t index(fShmNonRtClientControl.readUInt());

  1078. 

  1079.                 if (plugin != nullptr && plugin->isEnabled())

  1080.                     plugin->uiMidiProgramChange(index);

  1081.                 break;

  1082.             }

  1083. 

  1084.             case kPluginBridgeNonRtClientUiNoteOn: {

  1085.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1086.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1087.                 const uint8_t velo(fShmNonRtClientControl.readByte());

  1088. 

  1089.                 if (plugin != nullptr && plugin->isEnabled())

  1090.                     plugin->uiNoteOn(chnl, note, velo);

  1091.                 break;

  1092.             }

  1093. 

  1094.             case kPluginBridgeNonRtClientUiNoteOff: {

  1095.                 const uint8_t chnl(fShmNonRtClientControl.readByte());

  1096.                 const uint8_t note(fShmNonRtClientControl.readByte());

  1097. 

  1098.                 if (plugin != nullptr && plugin->isEnabled())

  1099.                     plugin->uiNoteOff(chnl, note);

  1100.                 break;

  1101.             }

  1102. 

  1103.             case kPluginBridgeNonRtClientQuit:

  1104.                 fClosingDown = true;

  1105.                 signalThreadShouldExit();

  1106.                 callback(true, true, ENGINE_CALLBACK_QUIT, 0, 0, 0, 0, 0.0f, nullptr);

  1107.                 break;

  1108.             }

  1109.         }

  1110.     }

  1111. 

  1112.     // -------------------------------------------------------------------

  1113. 

  1114. protected:

  1115.     void run() override

  1116.     {

  1117. #ifdef __SSE2_MATH__

  1118.         // Set FTZ and DAZ flags

  1119.         _mm_setcsr(_mm_getcsr() | 0x8040);

  1120. #endif

  1121. 

  1122.         bool quitReceived = false;

  1123. 

  1124.         for (; ! shouldThreadExit();)

  1125.         {

  1126.             const BridgeRtClientControl::WaitHelper helper(fShmRtClientControl);

  1127. 

  1128.             if (! helper.ok)

  1129.                 continue;

  1130. 

  1131.             for (; fShmRtClientControl.isDataAvailableForReading();)

  1132.             {

  1133.                 const PluginBridgeRtClientOpcode opcode(fShmRtClientControl.readOpcode());

  1134.                 CarlaPlugin* const plugin(pData->plugins[0].plugin);

  1135. 

  1136. #ifdef DEBUG

  1137.                 if (opcode != kPluginBridgeRtClientProcess && opcode != kPluginBridgeRtClientMidiEvent) {

  1138.                     carla_debug("CarlaEngineBridgeRtThread::run() - got opcode: %s", PluginBridgeRtClientOpcode2str(opcode));

  1139.                 }

  1140. #endif

  1141. 

  1142.                 switch (opcode)

  1143.                 {

  1144.                 case kPluginBridgeRtClientNull:

  1145.                     break;

  1146. 

  1147.                 case kPluginBridgeRtClientSetAudioPool: {

  1148.                     if (fShmAudioPool.data != nullptr)

  1149.                     {

  1150.                         jackbridge_shm_unmap(fShmAudioPool.shm, fShmAudioPool.data);

  1151.                         fShmAudioPool.data = nullptr;

  1152.                     }

  1153.                     const uint64_t poolSize(fShmRtClientControl.readULong());

  1154.                     CARLA_SAFE_ASSERT_BREAK(poolSize > 0);

  1155.                     fShmAudioPool.data = (float*)jackbridge_shm_map(fShmAudioPool.shm, static_cast<size_t>(poolSize));

  1156.                     break;

  1157.                 }

  1158. 

  1159.                 case kPluginBridgeRtClientSetBufferSize: {

  1160.                     const uint32_t bufferSize(fShmRtClientControl.readUInt());

  1161.                     pData->bufferSize = bufferSize;

  1162.                     bufferSizeChanged(bufferSize);

  1163.                     break;

  1164.                 }

  1165. 

  1166.                 case kPluginBridgeRtClientSetSampleRate: {

  1167.                     const double sampleRate(fShmRtClientControl.readDouble());

  1168.                     pData->sampleRate = sampleRate;

  1169.                     sampleRateChanged(sampleRate);

  1170.                     break;

  1171.                 }

  1172. 

  1173.                 case kPluginBridgeRtClientSetOnline:

  1174.                     fIsOffline = fShmRtClientControl.readBool();

  1175.                     offlineModeChanged(fIsOffline);

  1176.                     break;

  1177. 

  1178.                 case kPluginBridgeRtClientControlEventParameter: {

  1179.                     const uint32_t time(fShmRtClientControl.readUInt());

  1180.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1181.                     const uint16_t param(fShmRtClientControl.readUShort());

  1182.                     const float    value(fShmRtClientControl.readFloat());

  1183. 

  1184.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1185.                     {

  1186.                         event->type    = kEngineEventTypeControl;

  1187.                         event->time    = time;

  1188.                         event->channel = channel;

  1189.                         event->ctrl.type  = kEngineControlEventTypeParameter;

  1190.                         event->ctrl.param = param;

  1191.                         event->ctrl.value = value;

  1192.                     }

  1193.                     break;

  1194.                 }

  1195. 

  1196.                 case kPluginBridgeRtClientControlEventMidiBank: {

  1197.                     const uint32_t time(fShmRtClientControl.readUInt());

  1198.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1199.                     const uint16_t index(fShmRtClientControl.readUShort());

  1200. 

  1201.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1202.                     {

  1203.                         event->type    = kEngineEventTypeControl;

  1204.                         event->time    = time;

  1205.                         event->channel = channel;

  1206.                         event->ctrl.type  = kEngineControlEventTypeMidiBank;

  1207.                         event->ctrl.param = index;

  1208.                         event->ctrl.value = 0.0f;

  1209.                     }

  1210.                     break;

  1211.                 }

  1212. 

  1213.                 case kPluginBridgeRtClientControlEventMidiProgram: {

  1214.                     const uint32_t time(fShmRtClientControl.readUInt());

  1215.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1216.                     const uint16_t index(fShmRtClientControl.readUShort());

  1217. 

  1218.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1219.                     {

  1220.                         event->type    = kEngineEventTypeControl;

  1221.                         event->time    = time;

  1222.                         event->channel = channel;

  1223.                         event->ctrl.type  = kEngineControlEventTypeMidiProgram;

  1224.                         event->ctrl.param = index;

  1225.                         event->ctrl.value = 0.0f;

  1226.                     }

  1227.                     break;

  1228.                 }

  1229. 

  1230.                 case kPluginBridgeRtClientControlEventAllSoundOff: {

  1231.                     const uint32_t time(fShmRtClientControl.readUInt());

  1232.                     const uint8_t  channel(fShmRtClientControl.readByte());

  1233. 

  1234.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1235.                     {

  1236.                         event->type    = kEngineEventTypeControl;

  1237.                         event->time    = time;

  1238.                         event->channel = channel;

  1239.                         event->ctrl.type  = kEngineControlEventTypeAllSoundOff;

  1240.                         event->ctrl.param = 0;

  1241.                         event->ctrl.value = 0.0f;

  1242.                     }

  1243.                 }   break;

  1244. 

  1245.                 case kPluginBridgeRtClientControlEventAllNotesOff: {

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

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

  1248. 

  1249.                     if (EngineEvent* const event = getNextFreeInputEvent())

  1250.                     {

  1251.                         event->type    = kEngineEventTypeControl;

  1252.                         event->time    = time;

  1253.                         event->channel = channel;

  1254.                         event->ctrl.type  = kEngineControlEventTypeAllNotesOff;

  1255.                         event->ctrl.param = 0;

  1256.                         event->ctrl.value = 0.0f;

  1257.                     }

  1258.                 }   break;

  1259. 

  1260.                 case kPluginBridgeRtClientMidiEvent: {

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

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

  1263.                     const uint8_t  size(fShmRtClientControl.readByte());

  1264.                     CARLA_SAFE_ASSERT_BREAK(size > 0);

  1265. 

  1266.                     // FIXME variable-size stack

  1267.                     uint8_t data[size];

  1268. 

  1269.                     for (uint8_t i=0; i<size; ++i)

  1270.                         data[i] = fShmRtClientControl.readByte();

  1271. 

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

  1273.                     {

  1274.                         event->type    = kEngineEventTypeMidi;

  1275.                         event->time    = time;

  1276.                         event->channel = MIDI_GET_CHANNEL_FROM_DATA(data);

  1277. 

  1278.                         event->midi.port = port;

  1279.                         event->midi.size = size;

  1280. 

  1281.                         if (size > EngineMidiEvent::kDataSize)

  1282.                         {

  1283.                             event->midi.dataExt = data;

  1284.                             std::memset(event->midi.data, 0, sizeof(uint8_t)*EngineMidiEvent::kDataSize);

  1285.                         }

  1286.                         else

  1287.                         {

  1288.                             event->midi.data[0] = MIDI_GET_STATUS_FROM_DATA(data);

  1289. 

  1290.                             uint8_t i=1;

  1291.                             for (; i < size; ++i)

  1292.                                 event->midi.data[i] = data[i];

  1293.                             for (; i < EngineMidiEvent::kDataSize; ++i)

  1294.                                 event->midi.data[i] = 0;

  1295. 

  1296.                             event->midi.dataExt = nullptr;

  1297.                         }

  1298.                     }

  1299.                     break;

  1300.                 }

  1301. 

  1302.                 case kPluginBridgeRtClientProcess: {

  1303.                     const uint32_t frames(fShmRtClientControl.readUInt());

  1304. 

  1305.                     CARLA_SAFE_ASSERT_BREAK(fShmAudioPool.data != nullptr);

  1306. 

  1307.                     if (plugin != nullptr && plugin->isEnabled() && plugin->tryLock(fIsOffline))

  1308.                     {

  1309.                         const BridgeTimeInfo& bridgeTimeInfo(fShmRtClientControl.data->timeInfo);

  1310. 

  1311.                         const uint32_t audioInCount(plugin->getAudioInCount());

  1312.                         const uint32_t audioOutCount(plugin->getAudioOutCount());

  1313.                         const uint32_t cvInCount(plugin->getCVInCount());

  1314.                         const uint32_t cvOutCount(plugin->getCVOutCount());

  1315. 

  1316.                         const float* audioIn[audioInCount];

  1317.                         /* */ float* audioOut[audioOutCount];

  1318.                         const float* cvIn[cvInCount];

  1319.                         /* */ float* cvOut[cvOutCount];

  1320. 

  1321.                         float* fdata = fShmAudioPool.data;

  1322. 

  1323.                         for (uint32_t i=0; i < audioInCount; ++i, fdata += pData->bufferSize)

  1324.                             audioIn[i] = fdata;

  1325.                         for (uint32_t i=0; i < audioOutCount; ++i, fdata += pData->bufferSize)

  1326.                             audioOut[i] = fdata;

  1327. 

  1328.                         for (uint32_t i=0; i < cvInCount; ++i, fdata += pData->bufferSize)

  1329.                             cvIn[i] = fdata;

  1330.                         for (uint32_t i=0; i < cvOutCount; ++i, fdata += pData->bufferSize)

  1331.                             cvOut[i] = fdata;

  1332. 

  1333.                         EngineTimeInfo& timeInfo(pData->timeInfo);

  1334. 

  1335.                         timeInfo.playing   = bridgeTimeInfo.playing;

  1336.                         timeInfo.frame     = bridgeTimeInfo.frame;

  1337.                         timeInfo.usecs     = bridgeTimeInfo.usecs;

  1338.                         timeInfo.bbt.valid = (bridgeTimeInfo.validFlags & kPluginBridgeTimeInfoValidBBT) != 0;

  1339. 

  1340.                         if (timeInfo.bbt.valid)

  1341.                         {

  1342.                             timeInfo.bbt.bar  = bridgeTimeInfo.bar;

  1343.                             timeInfo.bbt.beat = bridgeTimeInfo.beat;

  1344.                             timeInfo.bbt.tick = bridgeTimeInfo.tick;

  1345. 

  1346.                             timeInfo.bbt.beatsPerBar = bridgeTimeInfo.beatsPerBar;

  1347.                             timeInfo.bbt.beatType    = bridgeTimeInfo.beatType;

  1348. 

  1349.                             timeInfo.bbt.ticksPerBeat   = bridgeTimeInfo.ticksPerBeat;

  1350.                             timeInfo.bbt.beatsPerMinute = bridgeTimeInfo.beatsPerMinute;

  1351.                             timeInfo.bbt.barStartTick   = bridgeTimeInfo.barStartTick;

  1352.                         }

  1353. 

  1354.                         plugin->initBuffers();

  1355.                         plugin->process(audioIn, audioOut, cvIn, cvOut, frames);

  1356.                         plugin->unlock();

  1357.                     }

  1358. 

  1359.                     uint8_t* midiData(fShmRtClientControl.data->midiOut);

  1360.                     carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1361.                     std::size_t curMidiDataPos = 0;

  1362. 

  1363.                     if (pData->events.in[0].type != kEngineEventTypeNull)

  1364.                         carla_zeroStructs(pData->events.in, kMaxEngineEventInternalCount);

  1365. 

  1366.                     if (pData->events.out[0].type != kEngineEventTypeNull)

  1367.                     {

  1368.                         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1369.                         {

  1370.                             const EngineEvent& event(pData->events.out[i]);

  1371. 

  1372.                             if (event.type == kEngineEventTypeNull)

  1373.                                 break;

  1374. 

  1375.                             if (event.type == kEngineEventTypeControl)

  1376.                             {

  1377.                                 uint8_t data[3];

  1378.                                 const uint8_t size = event.ctrl.convertToMidiData(event.channel, data);

  1379.                                 CARLA_SAFE_ASSERT_CONTINUE(size > 0 && size <= 3);

  1380. 

  1381.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + size >= kBridgeRtClientDataMidiOutSize)

  1382.                                     break;

  1383. 

  1384.                                 // set time

  1385.                                 *(uint32_t*)midiData = event.time;

  1386.                                 midiData = midiData + 4;

  1387.                                 curMidiDataPos += 4;

  1388. 

  1389.                                 // set port

  1390.                                 *midiData++ = 0;

  1391.                                 ++curMidiDataPos;

  1392. 

  1393.                                 // set size

  1394.                                 *midiData++ = size;

  1395.                                 ++curMidiDataPos;

  1396. 

  1397.                                 // set data

  1398.                                 for (uint8_t j=0; j<size; ++j)

  1399.                                     *midiData++ = data[j];

  1400. 

  1401.                                 curMidiDataPos += size;

  1402.                             }

  1403.                             else if (event.type == kEngineEventTypeMidi)

  1404.                             {

  1405.                                 const EngineMidiEvent& _midiEvent(event.midi);

  1406. 

  1407.                                 if (curMidiDataPos + kBridgeBaseMidiOutHeaderSize + _midiEvent.size >= kBridgeRtClientDataMidiOutSize)

  1408.                                     break;

  1409. 

  1410.                                 const uint8_t* const _midiData(_midiEvent.dataExt != nullptr ? _midiEvent.dataExt : _midiEvent.data);

  1411. 

  1412.                                 // set time

  1413.                                 *(uint32_t*)midiData = event.time;

  1414.                                 midiData += 4;

  1415.                                 curMidiDataPos += 4;

  1416. 

  1417.                                 // set port

  1418.                                 *midiData++ = _midiEvent.port;

  1419.                                 ++curMidiDataPos;

  1420. 

  1421.                                 // set size

  1422.                                 *midiData++ = _midiEvent.size;

  1423.                                 ++curMidiDataPos;

  1424. 

  1425.                                 // set data

  1426.                                 *midiData++ = uint8_t(_midiData[0] | (event.channel & MIDI_CHANNEL_BIT));

  1427. 

  1428.                                 for (uint8_t j=1; j<_midiEvent.size; ++j)

  1429.                                     *midiData++ = _midiData[j];

  1430. 

  1431.                                 curMidiDataPos += _midiEvent.size;

  1432.                             }

  1433.                         }

  1434. 

  1435.                         if (curMidiDataPos != 0 &&

  1436.                             curMidiDataPos + kBridgeBaseMidiOutHeaderSize < kBridgeRtClientDataMidiOutSize)

  1437.                             carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);

  1438. 

  1439.                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);

  1440.                     }

  1441. 

  1442.                 }   break;

  1443. 

  1444.                 case kPluginBridgeRtClientQuit: {

  1445.                     quitReceived = true;

  1446.                     fClosingDown = true;

  1447.                     signalThreadShouldExit();

  1448.                 }   break;

  1449.                 }

  1450.             }

  1451.         }

  1452. 

  1453.         callback(true, true, ENGINE_CALLBACK_ENGINE_STOPPED, 0, 0, 0, 0, 0.0f, nullptr);

  1454. 

  1455.         if (! quitReceived)

  1456.         {

  1457.             const char* const message("Plugin bridge error, process thread has stopped");

  1458.             const std::size_t messageSize(std::strlen(message));

  1459. 

  1460.             const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1461.             fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerError);

  1462.             fShmNonRtServerControl.writeUInt(messageSize);

  1463.             fShmNonRtServerControl.writeCustomData(message, messageSize);

  1464.             fShmNonRtServerControl.commitWrite();

  1465.         }

  1466.     }

  1467. 

  1468.     // called from process thread above

  1469.     EngineEvent* getNextFreeInputEvent() const noexcept

  1470.     {

  1471.         for (ushort i=0; i < kMaxEngineEventInternalCount; ++i)

  1472.         {

  1473.             EngineEvent* const event(&pData->events.in[i]);

  1474. 

  1475.             if (event->type == kEngineEventTypeNull)

  1476.                 return event;

  1477.         }

  1478.         return nullptr;

  1479.     }

  1480. 

  1481.     void latencyChanged(const uint32_t samples) noexcept override

  1482.     {

  1483.         const CarlaMutexLocker _cml(fShmNonRtServerControl.mutex);

  1484. 

  1485.         fShmNonRtServerControl.writeOpcode(kPluginBridgeNonRtServerSetLatency);

  1486.         fShmNonRtServerControl.writeUInt(samples);

  1487.         fShmNonRtServerControl.commitWrite();

  1488.     }

  1489. 

  1490.     // -------------------------------------------------------------------

  1491. 

  1492. private:

  1493.     BridgeAudioPool          fShmAudioPool;

  1494.     BridgeRtClientControl    fShmRtClientControl;

  1495.     BridgeNonRtClientControl fShmNonRtClientControl;

  1496.     BridgeNonRtServerControl fShmNonRtServerControl;

  1497. 

  1498.     CarlaString fBaseNameAudioPool;

  1499.     CarlaString fBaseNameRtClientControl;

  1500.     CarlaString fBaseNameNonRtClientControl;

  1501.     CarlaString fBaseNameNonRtServerControl;

  1502. 

  1503.     bool fClosingDown;

  1504.     bool fIsOffline;

  1505.     bool fFirstIdle;

  1506.     int64_t fLastPingTime;

  1507. 

  1508.     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CarlaEngineBridge)

  1509. };

  1510. 

  1511. // -----------------------------------------------------------------------

  1512. 

  1513. CarlaEngine* CarlaEngine::newBridge(const char* const audioPoolBaseName, const char* const rtClientBaseName, const char* const nonRtClientBaseName, const char* const nonRtServerBaseName)

  1514. {

  1515.     return new CarlaEngineBridge(audioPoolBaseName, rtClientBaseName, nonRtClientBaseName, nonRtServerBaseName);

  1516. }

  1517. 

  1518. // -----------------------------------------------------------------------

  1519. 

  1520. CARLA_BACKEND_END_NAMESPACE

  1521. 

  1522. // -----------------------------------------------------------------------

  1523. 

  1524. #include "CarlaBridgeUtils.cpp"

  1525. 

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