Add some stubs to vst3 host code

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/plugin/CarlaPluginVST2.cpp

@@ -216,6 +216,16 @@ public:
         return static_cast<int64_t>(fEffect->uniqueID);
     }
 
+    uint32_t getLatencyInFrames() const noexcept override
+    {
+        CARLA_SAFE_ASSERT_RETURN(fEffect != nullptr, 0);
+
+        const int latency = fEffect->initialDelay;
+        CARLA_SAFE_ASSERT_RETURN(latency >= 0, 0);
+
+        return static_cast<uint32_t>(latency);
+    }
+
     // -------------------------------------------------------------------
     // Information (count)
 

source/backend/plugin/CarlaPluginVST3.cpp

@@ -15,6 +15,10 @@
  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  */
 
+/* TODO list
+ * noexcept safe calls
+ * paramId vs index
+ */
 #include "CarlaPluginInternal.hpp"
 #include "CarlaEngine.hpp"
 #include "AppConfig.h"
@@ -255,10 +259,40 @@ public:
         return getPluginCategoryFromV3SubCategories(fV3ClassInfo.v2.sub_categories);
     }
 
+    uint32_t getLatencyInFrames() const noexcept override
+    {
+        CARLA_SAFE_ASSERT_RETURN(fV3.processor != nullptr, 0);
+
+        try {
+            return v3_cpp_obj(fV3.processor)->get_latency_samples(fV3.processor);
+        } CARLA_SAFE_EXCEPTION_RETURN("get_latency_samples", 0);
+    }
+
     // -------------------------------------------------------------------
     // Information (count)
 
-    // nothing
+    /* TODO
+    uint32_t getMidiInCount() const noexcept override
+    {
+    }
+
+    uint32_t getMidiOutCount() const noexcept override
+    {
+    }
+
+    uint32_t getParameterScalePointCount(uint32_t parameterId) const noexcept override
+    {
+    }
+    */
+
+    // -------------------------------------------------------------------
+    // Information (current data)
+
+    /* TODO
+    std::size_t getChunkData(void** dataPtr) noexcept override
+    {
+    }
+    */
 
     // -------------------------------------------------------------------
     // Information (per-plugin data)
@@ -271,14 +305,14 @@ public:
         if (pData->latency.frames == 0)
             options |= PLUGIN_OPTION_FIXED_BUFFERS;
 
-        /*
+        /* TODO
         if (numPrograms > 1)
             options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
         */
 
         options |= PLUGIN_OPTION_USE_CHUNKS;
 
-        /*
+        /* TODO
         if (hasMidiInput())
         {
             options |= PLUGIN_OPTION_SEND_CONTROL_CHANGES;
@@ -304,6 +338,12 @@ public:
             v3_cpp_obj(fV3.controller)->normalised_parameter_to_plain(fV3.controller, parameterId, normalized));
     }
 
+    /* TODO
+    float getParameterScalePointValue(uint32_t parameterId, uint32_t scalePointId) const noexcept override
+    {
+    }
+    */
+
     bool getLabel(char* const strBuf) const noexcept override
     {
         std::strncpy(strBuf, fV3ClassInfo.v1.name, STR_MAX);
@@ -341,6 +381,12 @@ public:
         return true;
     }
 
+    /* TODO
+    bool getParameterSymbol(uint32_t parameterId, char* strBuf) const noexcept override
+    {
+    }
+    */
+
     bool getParameterText(const uint32_t parameterId, char* const strBuf) noexcept override
     {
         CARLA_SAFE_ASSERT_RETURN(fV3.controller != nullptr, false);
@@ -374,14 +420,35 @@ public:
         return true;
     }
 
+    /* TODO
+    bool getParameterGroupName(uint32_t parameterId, char* strBuf) const noexcept override
+    {
+    }
+
+    bool getParameterScalePointLabel(uint32_t parameterId, uint32_t scalePointId, char* strBuf) const noexcept override
+    {
+    }
+    */
+
     // -------------------------------------------------------------------
     // Set data (state)
 
-    // nothing
+    /* TODO
+    void prepareForSave(const bool temporary) override
+    {
+        // component to edit controller state or vice-versa here
+    }
+    */
 
     // -------------------------------------------------------------------
     // Set data (internal stuff)
 
+    /* TODO
+    void setName(const char* newName) override
+    {
+    }
+    */
+
     // -------------------------------------------------------------------
     // Set data (plugin-specific stuff)
 
@@ -410,6 +477,12 @@ public:
         CarlaPlugin::setParameterValueRT(parameterId, fixedValue, frameOffset, sendCallbackLater);
     }
 
+    /*
+    void setChunkData(const void* data, std::size_t dataSize) override
+    {
+    }
+    */
+
     // -------------------------------------------------------------------
     // Set ui stuff
 
@@ -517,6 +590,7 @@ public:
             fUI.window->hide();
         }
     }
+
     // -------------------------------------------------------------------
     // Plugin state
 

source/utils/CarlaVst3Utils.hpp

@@ -123,7 +123,7 @@ typedef v3_plugin_factory** (*V3_GETFN)(void);
 CARLA_BACKEND_START_NAMESPACE
 
 static inline
-PluginCategory getPluginCategoryFromV3SubCategories(const char* const subcategories)
+PluginCategory getPluginCategoryFromV3SubCategories(const char* const subcategories) noexcept
 {
     if (std::strstr(subcategories, "Instrument") != nullptr)
         return PLUGIN_CATEGORY_SYNTH;
@@ -138,7 +138,7 @@ uint32_t v3_cconst(const uint8_t a, const uint8_t b, const uint8_t c, const uint
 }
 
 static inline
-const char* tuid2str(const v3_tuid iid)
+const char* tuid2str(const v3_tuid iid) noexcept
 {
     static char buf[44];
     std::snprintf(buf, sizeof(buf), "0x%08X,0x%08X,0x%08X,0x%08X",