Protect the graph with a mutex

Makefile.mk

@@ -15,7 +15,7 @@ export DISTRHO_NAMESPACE ?= WOLF_SHAPER_DISTRHO
 export DGL_NAMESPACE ?= WOLF_SHAPER_DGL
 
 EXTRA_INCLUDES ?=
-EXTRA_LIBS ?=
+EXTRA_LIBS ?= -pthread
 
 # --------------------------------------------------------------
 # Fallback to Linux if no other OS defined
@@ -128,8 +128,8 @@ endif
 ifeq ($(HAVE_DGL),true)
 
 ifeq ($(LINUX),true)
-DGL_FLAGS = $(shell pkg-config --cflags gl x11) -lpthread
-DGL_LIBS  = $(shell pkg-config --libs gl x11) -lpthread
+DGL_FLAGS = $(shell pkg-config --cflags gl x11)
+DGL_LIBS  = $(shell pkg-config --libs gl x11)
 endif
 
 ifeq ($(MACOS),true)

plugins/wolf-shaper/WolfShaperPlugin.cpp

@@ -15,6 +15,8 @@
  */
 
 #include "DistrhoPlugin.hpp"
+#include "extra/Mutex.hpp"
+#include "extra/ScopedPointer.hpp"
 
 #include <cstdio>
 #include <cstdlib>
@@ -212,6 +214,8 @@ class WolfShaper : public Plugin
 
 	void setState(const char *key, const char *value) override
 	{
+		const MutexLocker cml(mutex);
+
 		if (std::strcmp(key, "graph") == 0)
 		{
 			lineEditor.rebuildFromString(value);
@@ -247,7 +251,7 @@ class WolfShaper : public Plugin
 
 	float calculateValueOutsideGraph(float value)
 	{
-		const bool bipolarMode = parameters[paramBipolarMode].getRawValue() > 0.50f;
+		const bool bipolarMode = lineEditor.getBipolarMode();
 
 		if (bipolarMode)
 		{
@@ -272,7 +276,7 @@ class WolfShaper : public Plugin
 			return calculateValueOutsideGraph(input);
 		}
 
-		const bool bipolarMode = parameters[paramBipolarMode].getRawValue() > 0.50f;
+		const bool bipolarMode = lineEditor.getBipolarMode();
 
 		if (bipolarMode)
 		{
@@ -287,6 +291,17 @@ class WolfShaper : public Plugin
 
 	void run(const float **inputs, float **outputs, uint32_t frames) override
 	{
+		if (!mutex.tryLock())
+		{
+			if (outputs[0] != inputs[0])
+				std::memcpy(outputs[0], inputs[0], sizeof(float) * frames);
+
+			if (outputs[1] != inputs[1])
+				std::memcpy(outputs[1], inputs[1], sizeof(float) * frames);
+
+			return;
+		}
+
 		float max = 0.0f;
 
 		const int oversamplingParameter = std::round(parameters[paramOversample].getRawValue());
@@ -357,13 +372,16 @@ class WolfShaper : public Plugin
 		oversampler.downsample(outputs);
 
 		setParameterValue(paramOut, max);
+
+		mutex.unlock();
 	}
 
   private:
 	ParamSmooth parameters[paramCount];
 	Oversampler oversampler;
 
 	wolf::Graph lineEditor;
+	Mutex mutex;
 
 	float removeDCPrev;