3 files changed, 14 insertions, 13 deletions
diff --git a/plugin/Makefile.mingw32.in b/plugin/Makefile.mingw32.in
index 92b627c..40233b4 100644
--- a/plugin/Makefile.mingw32.in
+++ b/plugin/Makefile.mingw32.in
@@ -36,6 +36,7 @@ DG_SRC = \
 	@top_srcdir@/src/mutex.cc \
 	@top_srcdir@/src/path.cc \
 	@top_srcdir@/src/powerlist.cc \
+	@top_srcdir@/src/random.cc \
 	@top_srcdir@/src/sample.cc \
 	@top_srcdir@/src/semaphore.cc \
 	@top_srcdir@/src/saxparser.cc \
diff --git a/plugin/drumgizmo_plugin.cc b/plugin/drumgizmo_plugin.cc
index 6563dcc..24cfb9a 100644
--- a/plugin/drumgizmo_plugin.cc
+++ b/plugin/drumgizmo_plugin.cc
@@ -182,13 +182,13 @@ DrumGizmoPlugin::Input::Input(DrumGizmoPlugin& plugin)
 {
 }
 
-bool DrumGizmoPlugin::Input::init(Instruments &instruments)
+bool DrumGizmoPlugin::Input::init(const Instruments &instruments)
 {
 	this->instruments = &instruments;
 	return true;
 }
 
-void DrumGizmoPlugin::Input::setParm(std::string parm, std::string value)
+void DrumGizmoPlugin::Input::setParm(const std::string& parm, const std::string& value)
 {
 }
 
@@ -241,12 +241,12 @@ DrumGizmoPlugin::Output::Output(DrumGizmoPlugin& plugin)
 {
 }
 
-bool DrumGizmoPlugin::Output::init(Channels channels)
+bool DrumGizmoPlugin::Output::init(const Channels& channels)
 {
 	return true;
 }
 
-void DrumGizmoPlugin::Output::setParm(std::string parm, std::string value)
+void DrumGizmoPlugin::Output::setParm(const std::string& parm, const std::string& value)
 {
 }
 
@@ -291,7 +291,7 @@ void DrumGizmoPlugin::Output::post(size_t nsamples)
 {
 }
 
-sample_t* DrumGizmoPlugin::Output::getBuffer(int ch)
+sample_t* DrumGizmoPlugin::Output::getBuffer(int ch) const
 {
 	assert(plugin.output_samples);
 
@@ -303,7 +303,7 @@ sample_t* DrumGizmoPlugin::Output::getBuffer(int ch)
 	return (*plugin.output_samples)[ch];
 }
 
-size_t DrumGizmoPlugin::Output::getBufferSize()
+size_t DrumGizmoPlugin::Output::getBufferSize() const
 {
 	return plugin.getFramesize();
 }
diff --git a/plugin/drumgizmo_plugin.h b/plugin/drumgizmo_plugin.h
index 5d4a648..3508c3e 100644
--- a/plugin/drumgizmo_plugin.h
+++ b/plugin/drumgizmo_plugin.h
@@ -108,9 +108,9 @@ private:
 	public:
 		Input(DrumGizmoPlugin& plugin);
 
-		bool init(Instruments& instruments) override;
+		bool init(const Instruments& instruments) override;
 
-		void setParm(std::string parm, std::string value) override;
+		void setParm(const std::string& parm, const std::string& value) override;
 
 		bool start() override;
 		void stop() override;
@@ -121,7 +121,7 @@ private:
 
 	protected:
 		DrumGizmoPlugin& plugin;
-		Instruments* instruments{nullptr};
+		const Instruments* instruments{nullptr};
 	};
 
 	class Output
@@ -130,9 +130,9 @@ private:
 	public:
 		Output(DrumGizmoPlugin& plugin);
 
-		bool init(Channels channels) override;
+		bool init(const Channels& channels) override;
 
-		void setParm(std::string parm, std::string value) override;
+		void setParm(const std::string& parm, const std::string& value) override;
 
 		bool start() override;
 		void stop() override;
@@ -141,8 +141,8 @@ private:
 		void run(int ch, sample_t *samples, size_t nsamples) override;
 		void post(size_t nsamples) override;
 
-		sample_t *getBuffer(int ch) override;
-		size_t getBufferSize() override;
+		sample_t *getBuffer(int ch) const override;
+		size_t getBufferSize() const override;
 
 	protected:
 		DrumGizmoPlugin& plugin;