From 69692696ec2ce2dbec76736022838fa944fbf843 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Wed, 19 May 2021 09:12:59 +0300
Subject: [PATCH] - load FluidSynth dynamic library once

https://forum.zdoom.org/viewtopic.php?t=70710
---
 .../music_fluidsynth_mididevice.cpp           | 46 ++++++++-----------
 1 file changed, 18 insertions(+), 28 deletions(-)

diff --git a/source/mididevices/music_fluidsynth_mididevice.cpp b/source/mididevices/music_fluidsynth_mididevice.cpp
index 2d21ab6..0f6483a 100644
--- a/source/mididevices/music_fluidsynth_mididevice.cpp
+++ b/source/mididevices/music_fluidsynth_mididevice.cpp
@@ -116,7 +116,6 @@ protected:
 	static TReqProc<FluidSynthModule, int (*)(fluid_synth_t *, const char *, int, char *, int *, int *, int)> fluid_synth_sysex;
 	
 	bool LoadFluidSynth(const char *fluid_lib);
-	void UnloadFluidSynth();
 #endif
 };
 
@@ -251,9 +250,6 @@ FluidSynthMIDIDevice::~FluidSynthMIDIDevice()
 	{
 		delete_fluid_settings(FluidSettings);
 	}
-#ifdef DYN_FLUIDSYNTH
-	UnloadFluidSynth();
-#endif
 }
 
 //==========================================================================
@@ -536,35 +532,29 @@ DYN_FLUID_SYM(fluid_synth_sysex);
 
 bool FluidSynthMIDIDevice::LoadFluidSynth(const char *fluid_lib)
 {
-	if (fluid_lib && strlen(fluid_lib) > 0)
+    static bool is_loaded = false;
+    static bool is_checked = false;
+
+	if (!is_checked)
 	{
-		if(!FluidSynthModule.Load({fluid_lib}))
+		if (fluid_lib && strlen(fluid_lib) > 0)
 		{
-			const char* libname = fluid_lib;
-			ZMusic_Printf(ZMUSIC_MSG_ERROR, "Could not load %s\n", libname);
+			is_loaded = FluidSynthModule.Load({ fluid_lib });
+			if (!is_loaded)
+				ZMusic_Printf(ZMUSIC_MSG_ERROR, "Could not load %s\n", fluid_lib);
 		}
-		else
-			return true;
+
+		if (!is_loaded)
+		{
+			is_loaded = FluidSynthModule.Load({ FLUIDSYNTHLIB1, FLUIDSYNTHLIB2 });
+			if (!is_loaded)
+				ZMusic_Printf(ZMUSIC_MSG_ERROR, "Could not load " FLUIDSYNTHLIB1 " or " FLUIDSYNTHLIB2 "\n");
+		}
+
+		is_checked = true;
 	}
 
-	if(!FluidSynthModule.Load({FLUIDSYNTHLIB1, FLUIDSYNTHLIB2}))
-	{
-		ZMusic_Printf(ZMUSIC_MSG_ERROR, "Could not load " FLUIDSYNTHLIB1 " or " FLUIDSYNTHLIB2 "\n");
-		return false;
-	}
-
-	return true;
-}
-
-//==========================================================================
-//
-// FluidSynthMIDIDevice :: UnloadFluidSynth
-//
-//==========================================================================
-
-void FluidSynthMIDIDevice::UnloadFluidSynth()
-{
-	FluidSynthModule.Unload();
+	return is_loaded;
 }
 
 #endif